/src/gdal/gcore/gdaldataset.cpp
Line | Count | Source |
1 | | /****************************************************************************** |
2 | | * |
3 | | * Project: GDAL Core |
4 | | * Purpose: Base class for raster file formats. |
5 | | * Author: Frank Warmerdam, warmerdam@pobox.com |
6 | | * |
7 | | ****************************************************************************** |
8 | | * Copyright (c) 1998, 2003, Frank Warmerdam |
9 | | * Copyright (c) 2008-2013, Even Rouault <even dot rouault at spatialys.com> |
10 | | * |
11 | | * SPDX-License-Identifier: MIT |
12 | | ****************************************************************************/ |
13 | | |
14 | | #include "cpl_port.h" |
15 | | |
16 | | #include <array> |
17 | | #include <cassert> |
18 | | #include <climits> |
19 | | #include <cstdarg> |
20 | | #include <cstdio> |
21 | | #include <cstdlib> |
22 | | #include <cstring> |
23 | | #include <algorithm> |
24 | | #include <map> |
25 | | #include <mutex> |
26 | | #include <new> |
27 | | #include <set> |
28 | | #include <string> |
29 | | #include <utility> |
30 | | |
31 | | #include "cpl_conv.h" |
32 | | #include "cpl_error.h" |
33 | | #include "cpl_hash_set.h" |
34 | | #include "cpl_multiproc.h" |
35 | | #include "cpl_progress.h" |
36 | | #include "cpl_string.h" |
37 | | #include "cpl_vsi.h" |
38 | | #include "cpl_vsi_error.h" |
39 | | |
40 | | #include "gdal.h" |
41 | | #include "gdal_alg.h" |
42 | | #include "gdal_abstractbandblockcache.h" |
43 | | #include "gdalantirecursion.h" |
44 | | #include "gdal_dataset.h" |
45 | | #include "gdalsubdatasetinfo.h" |
46 | | |
47 | | #include "ogr_api.h" |
48 | | #include "ogr_attrind.h" |
49 | | #include "ogr_core.h" |
50 | | #include "ogr_feature.h" |
51 | | #include "ogr_featurestyle.h" |
52 | | #include "ogr_gensql.h" |
53 | | #include "ogr_geometry.h" |
54 | | #include "ogr_p.h" |
55 | | #include "ogr_spatialref.h" |
56 | | #include "ogr_srs_api.h" |
57 | | #include "ograpispy.h" |
58 | | #include "ogrsf_frmts.h" |
59 | | #include "ogrunionlayer.h" |
60 | | #include "ogr_swq.h" |
61 | | #include "memmultidim.h" |
62 | | #include "gdalmultidim_priv.h" |
63 | | |
64 | | #include "../frmts/derived/derivedlist.h" |
65 | | |
66 | | #ifdef SQLITE_ENABLED |
67 | | #include "../sqlite/ogrsqliteexecutesql.h" |
68 | | #endif |
69 | | |
70 | | extern const swq_field_type SpecialFieldTypes[SPECIAL_FIELD_COUNT]; |
71 | | |
72 | | CPL_C_START |
73 | | GDALAsyncReader *GDALGetDefaultAsyncReader(GDALDataset *poDS, int nXOff, |
74 | | int nYOff, int nXSize, int nYSize, |
75 | | void *pBuf, int nBufXSize, |
76 | | int nBufYSize, GDALDataType eBufType, |
77 | | int nBandCount, int *panBandMap, |
78 | | int nPixelSpace, int nLineSpace, |
79 | | int nBandSpace, char **papszOptions); |
80 | | CPL_C_END |
81 | | |
82 | | enum class GDALAllowReadWriteMutexState |
83 | | { |
84 | | RW_MUTEX_STATE_UNKNOWN, |
85 | | RW_MUTEX_STATE_ALLOWED, |
86 | | RW_MUTEX_STATE_DISABLED |
87 | | }; |
88 | | |
89 | | const GIntBig TOTAL_FEATURES_NOT_INIT = -2; |
90 | | const GIntBig TOTAL_FEATURES_UNKNOWN = -1; |
91 | | |
92 | | class GDALDataset::Private |
93 | | { |
94 | | CPL_DISALLOW_COPY_ASSIGN(Private) |
95 | | |
96 | | public: |
97 | | CPLMutex *hMutex = nullptr; |
98 | | std::map<GIntBig, int> oMapThreadToMutexTakenCount{}; |
99 | | #ifdef DEBUG_EXTRA |
100 | | std::map<GIntBig, int> oMapThreadToMutexTakenCountSaved{}; |
101 | | #endif |
102 | | GDALAllowReadWriteMutexState eStateReadWriteMutex = |
103 | | GDALAllowReadWriteMutexState::RW_MUTEX_STATE_UNKNOWN; |
104 | | int nCurrentLayerIdx = 0; |
105 | | int nLayerCount = -1; |
106 | | GIntBig nFeatureReadInLayer = 0; |
107 | | GIntBig nFeatureReadInDataset = 0; |
108 | | GIntBig nTotalFeaturesInLayer = TOTAL_FEATURES_NOT_INIT; |
109 | | GIntBig nTotalFeatures = TOTAL_FEATURES_NOT_INIT; |
110 | | OGRLayer *poCurrentLayer = nullptr; |
111 | | |
112 | | std::mutex m_oMutexWKT{}; |
113 | | |
114 | | char *m_pszWKTCached = nullptr; |
115 | | OGRSpatialReference *m_poSRSCached = nullptr; |
116 | | char *m_pszWKTGCPCached = nullptr; |
117 | | OGRSpatialReference *m_poSRSGCPCached = nullptr; |
118 | | |
119 | | GDALDataset *poParentDataset = nullptr; |
120 | | |
121 | | bool m_bOverviewsEnabled = true; |
122 | | |
123 | | std::vector<int> |
124 | | m_anBandMap{}; // used by RasterIO(). Values are 1, 2, etc. |
125 | | |
126 | 0 | Private() = default; |
127 | | }; |
128 | | |
129 | | struct SharedDatasetCtxt |
130 | | { |
131 | | // PID of the thread that mark the dataset as shared |
132 | | // This may not be the actual PID, but the responsiblePID. |
133 | | GIntBig nPID; |
134 | | char *pszDescription; |
135 | | char *pszConcatenatedOpenOptions; |
136 | | int nOpenFlags; |
137 | | |
138 | | GDALDataset *poDS; |
139 | | }; |
140 | | |
141 | | // Set of datasets opened as shared datasets (with GDALOpenShared) |
142 | | // The values in the set are of type SharedDatasetCtxt. |
143 | | static CPLHashSet *phSharedDatasetSet = nullptr; |
144 | | |
145 | | // Set of all datasets created in the constructor of GDALDataset. |
146 | | // In the case of a shared dataset, memorize the PID of the thread |
147 | | // that marked the dataset as shared, so that we can remove it from |
148 | | // the phSharedDatasetSet in the destructor of the dataset, even |
149 | | // if GDALClose is called from a different thread. |
150 | | static std::map<GDALDataset *, GIntBig> *poAllDatasetMap = nullptr; |
151 | | |
152 | | static CPLMutex *hDLMutex = nullptr; |
153 | | |
154 | | // Static array of all datasets. Used by GDALGetOpenDatasets. |
155 | | // Not thread-safe. See GDALGetOpenDatasets. |
156 | | static GDALDataset **ppDatasets = nullptr; |
157 | | |
158 | | static unsigned long GDALSharedDatasetHashFunc(const void *elt) |
159 | 0 | { |
160 | 0 | const SharedDatasetCtxt *psStruct = |
161 | 0 | static_cast<const SharedDatasetCtxt *>(elt); |
162 | 0 | return static_cast<unsigned long>( |
163 | 0 | CPLHashSetHashStr(psStruct->pszDescription) ^ |
164 | 0 | CPLHashSetHashStr(psStruct->pszConcatenatedOpenOptions) ^ |
165 | 0 | psStruct->nOpenFlags ^ psStruct->nPID); |
166 | 0 | } |
167 | | |
168 | | static int GDALSharedDatasetEqualFunc(const void *elt1, const void *elt2) |
169 | 0 | { |
170 | 0 | const SharedDatasetCtxt *psStruct1 = |
171 | 0 | static_cast<const SharedDatasetCtxt *>(elt1); |
172 | 0 | const SharedDatasetCtxt *psStruct2 = |
173 | 0 | static_cast<const SharedDatasetCtxt *>(elt2); |
174 | 0 | return strcmp(psStruct1->pszDescription, psStruct2->pszDescription) == 0 && |
175 | 0 | strcmp(psStruct1->pszConcatenatedOpenOptions, |
176 | 0 | psStruct2->pszConcatenatedOpenOptions) == 0 && |
177 | 0 | psStruct1->nPID == psStruct2->nPID && |
178 | 0 | psStruct1->nOpenFlags == psStruct2->nOpenFlags; |
179 | 0 | } |
180 | | |
181 | | static void GDALSharedDatasetFreeFunc(void *elt) |
182 | 0 | { |
183 | 0 | SharedDatasetCtxt *psStruct = static_cast<SharedDatasetCtxt *>(elt); |
184 | 0 | CPLFree(psStruct->pszDescription); |
185 | 0 | CPLFree(psStruct->pszConcatenatedOpenOptions); |
186 | 0 | CPLFree(psStruct); |
187 | 0 | } |
188 | | |
189 | | static std::string |
190 | | GDALSharedDatasetConcatenateOpenOptions(CSLConstList papszOpenOptions) |
191 | 0 | { |
192 | 0 | std::string osStr; |
193 | 0 | for (const char *pszOption : cpl::Iterate(papszOpenOptions)) |
194 | 0 | osStr += pszOption; |
195 | 0 | return osStr; |
196 | 0 | } |
197 | | |
198 | | /************************************************************************/ |
199 | | /* Functions shared between gdalproxypool.cpp and gdaldataset.cpp */ |
200 | | /************************************************************************/ |
201 | | |
202 | | // The open-shared mutex must be used by the ProxyPool too. |
203 | | CPLMutex **GDALGetphDLMutex() |
204 | 0 | { |
205 | 0 | return &hDLMutex; |
206 | 0 | } |
207 | | |
208 | | // The current thread will act in the behalf of the thread of PID |
209 | | // responsiblePID. |
210 | | void GDALSetResponsiblePIDForCurrentThread(GIntBig responsiblePID) |
211 | 0 | { |
212 | 0 | GIntBig *pResponsiblePID = |
213 | 0 | static_cast<GIntBig *>(CPLGetTLS(CTLS_RESPONSIBLEPID)); |
214 | 0 | if (pResponsiblePID == nullptr) |
215 | 0 | { |
216 | 0 | pResponsiblePID = static_cast<GIntBig *>(CPLMalloc(sizeof(GIntBig))); |
217 | 0 | CPLSetTLS(CTLS_RESPONSIBLEPID, pResponsiblePID, TRUE); |
218 | 0 | } |
219 | 0 | *pResponsiblePID = responsiblePID; |
220 | 0 | } |
221 | | |
222 | | // Get the PID of the thread that the current thread will act in the behalf of |
223 | | // By default : the current thread acts in the behalf of itself. |
224 | | GIntBig GDALGetResponsiblePIDForCurrentThread() |
225 | 0 | { |
226 | 0 | GIntBig *pResponsiblePID = |
227 | 0 | static_cast<GIntBig *>(CPLGetTLS(CTLS_RESPONSIBLEPID)); |
228 | 0 | if (pResponsiblePID == nullptr) |
229 | 0 | return CPLGetPID(); |
230 | 0 | return *pResponsiblePID; |
231 | 0 | } |
232 | | |
233 | | /************************************************************************/ |
234 | | /* ==================================================================== */ |
235 | | /* GDALDataset */ |
236 | | /* ==================================================================== */ |
237 | | /************************************************************************/ |
238 | | |
239 | | /** |
240 | | * \class GDALDataset "gdal_priv.h" |
241 | | * |
242 | | * A dataset encapsulating one or more raster bands. Details are further |
243 | | * discussed in the <a href="https://gdal.org/user/raster_data_model.html">GDAL |
244 | | * Raster Data Model</a>. |
245 | | * |
246 | | * Use GDALOpen() or GDALOpenShared() to create a GDALDataset for a named file, |
247 | | * or GDALDriver::Create() or GDALDriver::CreateCopy() to create a new |
248 | | * dataset. |
249 | | */ |
250 | | |
251 | | /************************************************************************/ |
252 | | /* GDALDataset() */ |
253 | | /************************************************************************/ |
254 | | |
255 | | //! @cond Doxygen_Suppress |
256 | | GDALDataset::GDALDataset() |
257 | 0 | : GDALDataset(CPLTestBool(CPLGetConfigOption("GDAL_FORCE_CACHING", "NO"))) |
258 | 0 | { |
259 | 0 | } |
260 | | |
261 | | GDALDataset::GDALDataset(int bForceCachedIOIn) |
262 | 0 | : bForceCachedIO(CPL_TO_BOOL(bForceCachedIOIn)), |
263 | 0 | m_poPrivate(new(std::nothrow) GDALDataset::Private) |
264 | 0 | { |
265 | 0 | } |
266 | | |
267 | | //! @endcond |
268 | | |
269 | | /************************************************************************/ |
270 | | /* ~GDALDataset() */ |
271 | | /************************************************************************/ |
272 | | |
273 | | /** |
274 | | * \brief Destroy an open GDALDataset. |
275 | | * |
276 | | * This is the accepted method of closing a GDAL dataset and deallocating |
277 | | * all resources associated with it. |
278 | | * |
279 | | * Equivalent of the C callable GDALClose(). Except that GDALClose() first |
280 | | * decrements the reference count, and then closes only if it has dropped to |
281 | | * zero. |
282 | | * |
283 | | * For Windows users, it is not recommended to use the delete operator on the |
284 | | * dataset object because of known issues when allocating and freeing memory |
285 | | * across module boundaries. Calling GDALClose() is then a better option. |
286 | | */ |
287 | | |
288 | | GDALDataset::~GDALDataset() |
289 | | |
290 | 0 | { |
291 | | // we don't want to report destruction of datasets that |
292 | | // were never really open or meant as internal |
293 | 0 | if (!bIsInternal && (nBands != 0 || !EQUAL(GetDescription(), ""))) |
294 | 0 | { |
295 | 0 | if (CPLGetPID() != GDALGetResponsiblePIDForCurrentThread()) |
296 | 0 | CPLDebug("GDAL", |
297 | 0 | "GDALClose(%s, this=%p) (pid=%d, responsiblePID=%d)", |
298 | 0 | GetDescription(), this, static_cast<int>(CPLGetPID()), |
299 | 0 | static_cast<int>(GDALGetResponsiblePIDForCurrentThread())); |
300 | 0 | else |
301 | 0 | CPLDebug("GDAL", "GDALClose(%s, this=%p)", GetDescription(), this); |
302 | 0 | } |
303 | |
|
304 | 0 | GDALDataset::Close(); |
305 | | |
306 | | /* -------------------------------------------------------------------- */ |
307 | | /* Remove dataset from the "open" dataset list. */ |
308 | | /* -------------------------------------------------------------------- */ |
309 | 0 | if (!bIsInternal) |
310 | 0 | { |
311 | 0 | CPLMutexHolderD(&hDLMutex); |
312 | 0 | if (poAllDatasetMap) |
313 | 0 | { |
314 | 0 | std::map<GDALDataset *, GIntBig>::iterator oIter = |
315 | 0 | poAllDatasetMap->find(this); |
316 | 0 | CPLAssert(oIter != poAllDatasetMap->end()); |
317 | | |
318 | 0 | UnregisterFromSharedDataset(); |
319 | |
|
320 | 0 | poAllDatasetMap->erase(oIter); |
321 | |
|
322 | 0 | if (poAllDatasetMap->empty()) |
323 | 0 | { |
324 | 0 | delete poAllDatasetMap; |
325 | 0 | poAllDatasetMap = nullptr; |
326 | 0 | if (phSharedDatasetSet) |
327 | 0 | { |
328 | 0 | CPLHashSetDestroy(phSharedDatasetSet); |
329 | 0 | } |
330 | 0 | phSharedDatasetSet = nullptr; |
331 | 0 | CPLFree(ppDatasets); |
332 | 0 | ppDatasets = nullptr; |
333 | 0 | } |
334 | 0 | } |
335 | 0 | } |
336 | | |
337 | | /* -------------------------------------------------------------------- */ |
338 | | /* Destroy the raster bands if they exist. */ |
339 | | /* -------------------------------------------------------------------- */ |
340 | 0 | for (int i = 0; i < nBands && papoBands != nullptr; ++i) |
341 | 0 | { |
342 | 0 | if (papoBands[i] != nullptr) |
343 | 0 | delete papoBands[i]; |
344 | 0 | papoBands[i] = nullptr; |
345 | 0 | } |
346 | |
|
347 | 0 | CPLFree(papoBands); |
348 | |
|
349 | 0 | if (m_poStyleTable) |
350 | 0 | { |
351 | 0 | delete m_poStyleTable; |
352 | 0 | m_poStyleTable = nullptr; |
353 | 0 | } |
354 | |
|
355 | 0 | if (m_poPrivate != nullptr) |
356 | 0 | { |
357 | 0 | if (m_poPrivate->hMutex != nullptr) |
358 | 0 | CPLDestroyMutex(m_poPrivate->hMutex); |
359 | |
|
360 | 0 | #if defined(__COVERITY__) || defined(DEBUG) |
361 | | // Not needed since at destruction there is no risk of concurrent use. |
362 | 0 | std::lock_guard oLock(m_poPrivate->m_oMutexWKT); |
363 | 0 | #endif |
364 | 0 | CPLFree(m_poPrivate->m_pszWKTCached); |
365 | 0 | if (m_poPrivate->m_poSRSCached) |
366 | 0 | { |
367 | 0 | m_poPrivate->m_poSRSCached->Release(); |
368 | 0 | } |
369 | 0 | CPLFree(m_poPrivate->m_pszWKTGCPCached); |
370 | 0 | if (m_poPrivate->m_poSRSGCPCached) |
371 | 0 | { |
372 | 0 | m_poPrivate->m_poSRSGCPCached->Release(); |
373 | 0 | } |
374 | 0 | } |
375 | |
|
376 | 0 | delete m_poPrivate; |
377 | |
|
378 | 0 | CSLDestroy(papszOpenOptions); |
379 | 0 | } |
380 | | |
381 | | /************************************************************************/ |
382 | | /* Close() */ |
383 | | /************************************************************************/ |
384 | | |
385 | | /** Do final cleanup before a dataset is destroyed. |
386 | | * |
387 | | * This method is typically called by GDALClose() or the destructor of a |
388 | | * GDALDataset subclass. It might also be called by C++ users before |
389 | | * destroying a dataset. It should not be called on a shared dataset whose |
390 | | * reference count is greater than one. |
391 | | * |
392 | | * It gives a last chance to the closing process to return an error code if |
393 | | * something goes wrong, in particular in creation / update scenarios where |
394 | | * file write or network communication might occur when finalizing the dataset. |
395 | | * |
396 | | * Implementations should be robust to this method to be called several times |
397 | | * (on subsequent calls, it should do nothing and return CE_None). |
398 | | * Once it has been called, no other method than Close() or the dataset |
399 | | * destructor should be called. RasterBand or OGRLayer owned by the dataset |
400 | | * should be assumed as no longer being valid. |
401 | | * |
402 | | * If a driver implements this method, it must also call it from its |
403 | | * dataset destructor. |
404 | | * |
405 | | * This is the equivalent of C function GDALDatasetRunCloseWithoutDestroying(). |
406 | | * |
407 | | * A typical implementation might look as the following |
408 | | * \code{.cpp} |
409 | | * |
410 | | * MyDataset::~MyDataset() |
411 | | * { |
412 | | * try |
413 | | * { |
414 | | * MyDataset::Close(); |
415 | | * } |
416 | | * catch (const std::exception &exc) |
417 | | * { |
418 | | * // If Close() can throw exception |
419 | | * CPLError(CE_Failure, CPLE_AppDefined, |
420 | | * "Exception thrown in MyDataset::Close(): %s", |
421 | | * exc.what()); |
422 | | * } |
423 | | * catch (...) |
424 | | * { |
425 | | * // If Close() can throw exception |
426 | | * CPLError(CE_Failure, CPLE_AppDefined, |
427 | | * "Exception thrown in MyDataset::Close()"); |
428 | | * } |
429 | | * } |
430 | | * |
431 | | * CPLErr MyDataset::Close() |
432 | | * { |
433 | | * CPLErr eErr = CE_None; |
434 | | * if( nOpenFlags != OPEN_FLAGS_CLOSED ) |
435 | | * { |
436 | | * eErr = MyDataset::FlushCache(true); |
437 | | * |
438 | | * // Do something driver specific |
439 | | * if (m_fpImage) |
440 | | * { |
441 | | * if( VSIFCloseL(m_fpImage) != 0 ) |
442 | | * { |
443 | | * CPLError(CE_Failure, CPLE_FileIO, "VSIFCloseL() failed"); |
444 | | * eErr = CE_Failure; |
445 | | * } |
446 | | * } |
447 | | * |
448 | | * // Call parent Close() implementation. |
449 | | * eErr = GDAL::Combine(eErr, MyParentDatasetClass::Close()); |
450 | | * } |
451 | | * return eErr; |
452 | | * } |
453 | | * \endcode |
454 | | * |
455 | | * @since GDAL 3.7 |
456 | | */ |
457 | | CPLErr GDALDataset::Close() |
458 | 0 | { |
459 | 0 | if (nOpenFlags != OPEN_FLAGS_CLOSED) |
460 | 0 | { |
461 | | // Call UnregisterFromSharedDataset() before altering nOpenFlags |
462 | 0 | UnregisterFromSharedDataset(); |
463 | |
|
464 | 0 | nOpenFlags = OPEN_FLAGS_CLOSED; |
465 | 0 | } |
466 | |
|
467 | 0 | if (IsMarkedSuppressOnClose()) |
468 | 0 | { |
469 | 0 | if (poDriver == nullptr || |
470 | | // Someone issuing Create("foo.tif") on a |
471 | | // memory driver doesn't expect files with those names to be deleted |
472 | | // on a file system... |
473 | | // This is somewhat messy. Ideally there should be a way for the |
474 | | // driver to overload the default behavior |
475 | 0 | (!EQUAL(poDriver->GetDescription(), "MEM") && |
476 | 0 | !EQUAL(poDriver->GetDescription(), "Memory"))) |
477 | 0 | { |
478 | 0 | if (VSIUnlink(GetDescription()) == 0) |
479 | 0 | UnMarkSuppressOnClose(); |
480 | 0 | } |
481 | 0 | } |
482 | |
|
483 | 0 | return CE_None; |
484 | 0 | } |
485 | | |
486 | | /************************************************************************/ |
487 | | /* GDALDatasetRunCloseWithoutDestroying() */ |
488 | | /************************************************************************/ |
489 | | |
490 | | /** Run the Close() method, without running destruction of the object. |
491 | | * |
492 | | * This ensures that content that should be written to file is written and |
493 | | * that all file descriptors are closed. |
494 | | * |
495 | | * Note that this is different from GDALClose() which also destroys |
496 | | * the underlying C++ object. GDALClose() or GDALReleaseDataset() are actually |
497 | | * the only functions that can be safely called on the dataset handle after |
498 | | * this function has been called. |
499 | | * |
500 | | * Most users want to use GDALClose() or GDALReleaseDataset() rather than |
501 | | * this function. |
502 | | * |
503 | | * This function is equivalent to the C++ method GDALDataset:Close() |
504 | | * |
505 | | * @param hDS dataset handle. |
506 | | * @return CE_None if no error |
507 | | * |
508 | | * @since GDAL 3.12 |
509 | | * @see GDALClose() |
510 | | */ |
511 | | CPLErr GDALDatasetRunCloseWithoutDestroying(GDALDatasetH hDS) |
512 | 0 | { |
513 | 0 | VALIDATE_POINTER1(hDS, __func__, CE_Failure); |
514 | 0 | return GDALDataset::FromHandle(hDS)->Close(); |
515 | 0 | } |
516 | | |
517 | | /************************************************************************/ |
518 | | /* UnregisterFromSharedDataset() */ |
519 | | /************************************************************************/ |
520 | | |
521 | | void GDALDataset::UnregisterFromSharedDataset() |
522 | 0 | { |
523 | 0 | if (!(!bIsInternal && bShared && poAllDatasetMap && phSharedDatasetSet)) |
524 | 0 | return; |
525 | | |
526 | 0 | CPLMutexHolderD(&hDLMutex); |
527 | |
|
528 | 0 | std::map<GDALDataset *, GIntBig>::iterator oIter = |
529 | 0 | poAllDatasetMap->find(this); |
530 | 0 | CPLAssert(oIter != poAllDatasetMap->end()); |
531 | 0 | const GIntBig nPIDCreatorForShared = oIter->second; |
532 | 0 | bShared = false; |
533 | 0 | SharedDatasetCtxt sStruct; |
534 | 0 | sStruct.nPID = nPIDCreatorForShared; |
535 | 0 | sStruct.nOpenFlags = nOpenFlags & ~GDAL_OF_SHARED; |
536 | 0 | sStruct.pszDescription = const_cast<char *>(GetDescription()); |
537 | 0 | std::string osConcatenatedOpenOptions = |
538 | 0 | GDALSharedDatasetConcatenateOpenOptions(papszOpenOptions); |
539 | 0 | sStruct.pszConcatenatedOpenOptions = &osConcatenatedOpenOptions[0]; |
540 | 0 | sStruct.poDS = nullptr; |
541 | 0 | SharedDatasetCtxt *psStruct = static_cast<SharedDatasetCtxt *>( |
542 | 0 | CPLHashSetLookup(phSharedDatasetSet, &sStruct)); |
543 | 0 | if (psStruct && psStruct->poDS == this) |
544 | 0 | { |
545 | 0 | CPLHashSetRemove(phSharedDatasetSet, psStruct); |
546 | 0 | } |
547 | 0 | else |
548 | 0 | { |
549 | 0 | CPLDebug("GDAL", |
550 | 0 | "Should not happen. Cannot find %s, " |
551 | 0 | "this=%p in phSharedDatasetSet", |
552 | 0 | GetDescription(), this); |
553 | 0 | } |
554 | 0 | } |
555 | | |
556 | | /************************************************************************/ |
557 | | /* AddToDatasetOpenList() */ |
558 | | /************************************************************************/ |
559 | | |
560 | | void GDALDataset::AddToDatasetOpenList() |
561 | 0 | { |
562 | | /* -------------------------------------------------------------------- */ |
563 | | /* Add this dataset to the open dataset list. */ |
564 | | /* -------------------------------------------------------------------- */ |
565 | 0 | bIsInternal = false; |
566 | |
|
567 | 0 | CPLMutexHolderD(&hDLMutex); |
568 | |
|
569 | 0 | if (poAllDatasetMap == nullptr) |
570 | 0 | poAllDatasetMap = new std::map<GDALDataset *, GIntBig>; |
571 | 0 | (*poAllDatasetMap)[this] = -1; |
572 | 0 | } |
573 | | |
574 | | /************************************************************************/ |
575 | | /* FlushCache() */ |
576 | | /************************************************************************/ |
577 | | |
578 | | /** |
579 | | * \brief Flush all write cached data to disk. |
580 | | * |
581 | | * Any raster (or other GDAL) data written via GDAL calls, but buffered |
582 | | * internally will be written to disk. |
583 | | * |
584 | | * The default implementation of this method just calls the FlushCache() method |
585 | | * on each of the raster bands and the SyncToDisk() method |
586 | | * on each of the layers. Conceptually, calling FlushCache() on a dataset |
587 | | * should include any work that might be accomplished by calling SyncToDisk() |
588 | | * on layers in that dataset. |
589 | | * |
590 | | * Using this method does not prevent use from calling GDALClose() |
591 | | * to properly close a dataset and ensure that important data not addressed |
592 | | * by FlushCache() is written in the file. |
593 | | * |
594 | | * This method is the same as the C function GDALFlushCache(). |
595 | | * |
596 | | * @param bAtClosing Whether this is called from a GDALDataset destructor |
597 | | * @return CE_None in case of success (note: return value added in GDAL 3.7) |
598 | | */ |
599 | | |
600 | | CPLErr GDALDataset::FlushCache(bool bAtClosing) |
601 | | |
602 | 0 | { |
603 | 0 | CPLErr eErr = CE_None; |
604 | | // This sometimes happens if a dataset is destroyed before completely |
605 | | // built. |
606 | |
|
607 | 0 | if (papoBands) |
608 | 0 | { |
609 | 0 | for (int i = 0; i < nBands; ++i) |
610 | 0 | { |
611 | 0 | if (papoBands[i]) |
612 | 0 | { |
613 | 0 | if (papoBands[i]->FlushCache(bAtClosing) != CE_None) |
614 | 0 | eErr = CE_Failure; |
615 | 0 | } |
616 | 0 | } |
617 | 0 | } |
618 | |
|
619 | 0 | const int nLayers = GetLayerCount(); |
620 | | // cppcheck-suppress knownConditionTrueFalse |
621 | 0 | if (nLayers > 0) |
622 | 0 | { |
623 | 0 | CPLMutexHolderD(m_poPrivate ? &(m_poPrivate->hMutex) : nullptr); |
624 | 0 | for (int i = 0; i < nLayers; ++i) |
625 | 0 | { |
626 | 0 | OGRLayer *poLayer = GetLayer(i); |
627 | |
|
628 | 0 | if (poLayer) |
629 | 0 | { |
630 | 0 | if (poLayer->SyncToDisk() != OGRERR_NONE) |
631 | 0 | eErr = CE_Failure; |
632 | 0 | } |
633 | 0 | } |
634 | 0 | } |
635 | |
|
636 | 0 | return eErr; |
637 | 0 | } |
638 | | |
639 | | /************************************************************************/ |
640 | | /* GDALFlushCache() */ |
641 | | /************************************************************************/ |
642 | | |
643 | | /** |
644 | | * \brief Flush all write cached data to disk. |
645 | | * |
646 | | * @see GDALDataset::FlushCache(). |
647 | | * @return CE_None in case of success (note: return value added in GDAL 3.7) |
648 | | */ |
649 | | |
650 | | CPLErr CPL_STDCALL GDALFlushCache(GDALDatasetH hDS) |
651 | | |
652 | 0 | { |
653 | 0 | VALIDATE_POINTER1(hDS, "GDALFlushCache", CE_Failure); |
654 | | |
655 | 0 | return GDALDataset::FromHandle(hDS)->FlushCache(false); |
656 | 0 | } |
657 | | |
658 | | /************************************************************************/ |
659 | | /* DropCache() */ |
660 | | /************************************************************************/ |
661 | | |
662 | | /** |
663 | | * \brief Drop all write cached data |
664 | | * |
665 | | * This method is the same as the C function GDALDropCache(). |
666 | | * |
667 | | * @return CE_None in case of success |
668 | | * @since 3.9 |
669 | | */ |
670 | | |
671 | | CPLErr GDALDataset::DropCache() |
672 | | |
673 | 0 | { |
674 | 0 | CPLErr eErr = CE_None; |
675 | |
|
676 | 0 | if (papoBands) |
677 | 0 | { |
678 | 0 | for (int i = 0; i < nBands; ++i) |
679 | 0 | { |
680 | 0 | if (papoBands[i]) |
681 | 0 | { |
682 | 0 | if (papoBands[i]->DropCache() != CE_None) |
683 | 0 | eErr = CE_Failure; |
684 | 0 | } |
685 | 0 | } |
686 | 0 | } |
687 | |
|
688 | 0 | return eErr; |
689 | 0 | } |
690 | | |
691 | | /************************************************************************/ |
692 | | /* GDALDropCache() */ |
693 | | /************************************************************************/ |
694 | | |
695 | | /** |
696 | | * \brief Drop all write cached data |
697 | | * |
698 | | * @see GDALDataset::DropCache(). |
699 | | * @return CE_None in case of success |
700 | | * @since 3.9 |
701 | | */ |
702 | | |
703 | | CPLErr CPL_STDCALL GDALDropCache(GDALDatasetH hDS) |
704 | | |
705 | 0 | { |
706 | 0 | VALIDATE_POINTER1(hDS, "GDALDropCache", CE_Failure); |
707 | | |
708 | 0 | return GDALDataset::FromHandle(hDS)->DropCache(); |
709 | 0 | } |
710 | | |
711 | | /************************************************************************/ |
712 | | /* GetEstimatedRAMUsage() */ |
713 | | /************************************************************************/ |
714 | | |
715 | | /** |
716 | | * \brief Return the intrinsic RAM usage of this dataset. |
717 | | * |
718 | | * The returned value should take into account caches in the underlying driver |
719 | | * and decoding library, but not the usage related to the GDAL block cache. |
720 | | * |
721 | | * At time of writing, this method is only implemented in the JP2OpenJPEG |
722 | | * driver. For single-tiled JPEG2000 images, the decoding of the image, |
723 | | * even partially, involves allocating at least |
724 | | * width * height * number_of_bands * sizeof(uint32_t) bytes inside the libopenjp2 |
725 | | * library. |
726 | | * |
727 | | * This method is used by the GDALDatasetPool class, itself used by the GDAL VRT |
728 | | * driver, to determine how long a dataset in the pool must be kept open, given |
729 | | * the RAM usage of the dataset with respect to the usable total RAM. |
730 | | * |
731 | | * @since GDAL 3.7 |
732 | | * @return RAM usage in bytes, or -1 if unknown (the default implementation |
733 | | * returns -1) |
734 | | */ |
735 | | |
736 | | GIntBig GDALDataset::GetEstimatedRAMUsage() |
737 | 0 | { |
738 | 0 | return -1; |
739 | 0 | } |
740 | | |
741 | | /************************************************************************/ |
742 | | /* BlockBasedFlushCache() */ |
743 | | /* */ |
744 | | /* This helper method can be called by the */ |
745 | | /* GDALDataset::FlushCache() for particular drivers to ensure */ |
746 | | /* that buffers will be flushed in a manner suitable for pixel */ |
747 | | /* interleaved (by block) IO. That is, if all the bands have */ |
748 | | /* the same size blocks then a given block will be flushed for */ |
749 | | /* all bands before proceeding to the next block. */ |
750 | | /************************************************************************/ |
751 | | |
752 | | //! @cond Doxygen_Suppress |
753 | | CPLErr GDALDataset::BlockBasedFlushCache(bool bAtClosing) |
754 | | |
755 | 0 | { |
756 | 0 | GDALRasterBand *poBand1 = GetRasterBand(1); |
757 | 0 | if (poBand1 == nullptr || (IsMarkedSuppressOnClose() && bAtClosing)) |
758 | 0 | { |
759 | 0 | return GDALDataset::FlushCache(bAtClosing); |
760 | 0 | } |
761 | | |
762 | 0 | int nBlockXSize = 0; |
763 | 0 | int nBlockYSize = 0; |
764 | 0 | poBand1->GetBlockSize(&nBlockXSize, &nBlockYSize); |
765 | | |
766 | | /* -------------------------------------------------------------------- */ |
767 | | /* Verify that all bands match. */ |
768 | | /* -------------------------------------------------------------------- */ |
769 | 0 | for (int iBand = 1; iBand < nBands; ++iBand) |
770 | 0 | { |
771 | 0 | GDALRasterBand *poBand = GetRasterBand(iBand + 1); |
772 | |
|
773 | 0 | int nThisBlockXSize, nThisBlockYSize; |
774 | 0 | poBand->GetBlockSize(&nThisBlockXSize, &nThisBlockYSize); |
775 | 0 | if (nThisBlockXSize != nBlockXSize && nThisBlockYSize != nBlockYSize) |
776 | 0 | { |
777 | 0 | return GDALDataset::FlushCache(bAtClosing); |
778 | 0 | } |
779 | 0 | } |
780 | | |
781 | | /* -------------------------------------------------------------------- */ |
782 | | /* Now flush writable data. */ |
783 | | /* -------------------------------------------------------------------- */ |
784 | 0 | for (int iY = 0; iY < poBand1->nBlocksPerColumn; ++iY) |
785 | 0 | { |
786 | 0 | for (int iX = 0; iX < poBand1->nBlocksPerRow; ++iX) |
787 | 0 | { |
788 | 0 | for (int iBand = 0; iBand < nBands; ++iBand) |
789 | 0 | { |
790 | 0 | const CPLErr eErr = papoBands[iBand]->FlushBlock(iX, iY); |
791 | |
|
792 | 0 | if (eErr != CE_None) |
793 | 0 | return CE_Failure; |
794 | 0 | } |
795 | 0 | } |
796 | 0 | } |
797 | 0 | return CE_None; |
798 | 0 | } |
799 | | |
800 | | /************************************************************************/ |
801 | | /* RasterInitialize() */ |
802 | | /* */ |
803 | | /* Initialize raster size */ |
804 | | /************************************************************************/ |
805 | | |
806 | | void GDALDataset::RasterInitialize(int nXSize, int nYSize) |
807 | | |
808 | 0 | { |
809 | 0 | CPLAssert(nXSize > 0 && nYSize > 0); |
810 | | |
811 | 0 | nRasterXSize = nXSize; |
812 | 0 | nRasterYSize = nYSize; |
813 | 0 | } |
814 | | |
815 | | //! @endcond |
816 | | |
817 | | /************************************************************************/ |
818 | | /* AddBand() */ |
819 | | /************************************************************************/ |
820 | | |
821 | | /** |
822 | | * \fn GDALDataset::AddBand(GDALDataType, char**) |
823 | | * \brief Add a band to a dataset. |
824 | | * |
825 | | * This method will add a new band to the dataset if the underlying format |
826 | | * supports this action. Most formats do not. |
827 | | * |
828 | | * Note that the new GDALRasterBand is not returned. It may be fetched |
829 | | * after successful completion of the method by calling |
830 | | * GDALDataset::GetRasterBand(GDALDataset::GetRasterCount()) as the newest |
831 | | * band will always be the last band. |
832 | | * |
833 | | * @param eType the data type of the pixels in the new band. |
834 | | * |
835 | | * @param papszOptions a list of NAME=VALUE option strings. The supported |
836 | | * options are format specific. NULL may be passed by default. |
837 | | * |
838 | | * @return CE_None on success or CE_Failure on failure. |
839 | | */ |
840 | | |
841 | | CPLErr GDALDataset::AddBand(CPL_UNUSED GDALDataType eType, |
842 | | CPL_UNUSED char **papszOptions) |
843 | | |
844 | 0 | { |
845 | 0 | ReportError(CE_Failure, CPLE_NotSupported, |
846 | 0 | "Dataset does not support the AddBand() method."); |
847 | |
|
848 | 0 | return CE_Failure; |
849 | 0 | } |
850 | | |
851 | | /************************************************************************/ |
852 | | /* GDALAddBand() */ |
853 | | /************************************************************************/ |
854 | | |
855 | | /** |
856 | | * \brief Add a band to a dataset. |
857 | | * |
858 | | * @see GDALDataset::AddBand(). |
859 | | */ |
860 | | |
861 | | CPLErr CPL_STDCALL GDALAddBand(GDALDatasetH hDataset, GDALDataType eType, |
862 | | CSLConstList papszOptions) |
863 | | |
864 | 0 | { |
865 | 0 | VALIDATE_POINTER1(hDataset, "GDALAddBand", CE_Failure); |
866 | | |
867 | 0 | return GDALDataset::FromHandle(hDataset)->AddBand( |
868 | 0 | eType, const_cast<char **>(papszOptions)); |
869 | 0 | } |
870 | | |
871 | | /************************************************************************/ |
872 | | /* SetBand() */ |
873 | | /************************************************************************/ |
874 | | |
875 | | //! @cond Doxygen_Suppress |
876 | | /** Set a band in the band array, updating the band count, and array size |
877 | | * appropriately. |
878 | | * |
879 | | * @param nNewBand new band number (indexing starts at 1) |
880 | | * @param poBand band object. |
881 | | */ |
882 | | |
883 | | void GDALDataset::SetBand(int nNewBand, GDALRasterBand *poBand) |
884 | | |
885 | 0 | { |
886 | | /* -------------------------------------------------------------------- */ |
887 | | /* Do we need to grow the bands list? */ |
888 | | /* -------------------------------------------------------------------- */ |
889 | 0 | if (nBands < nNewBand || papoBands == nullptr) |
890 | 0 | { |
891 | 0 | GDALRasterBand **papoNewBands = nullptr; |
892 | |
|
893 | 0 | if (papoBands == nullptr) |
894 | 0 | papoNewBands = static_cast<GDALRasterBand **>(VSICalloc( |
895 | 0 | sizeof(GDALRasterBand *), std::max(nNewBand, nBands))); |
896 | 0 | else |
897 | 0 | papoNewBands = static_cast<GDALRasterBand **>( |
898 | 0 | VSIRealloc(papoBands, sizeof(GDALRasterBand *) * |
899 | 0 | std::max(nNewBand, nBands))); |
900 | 0 | if (papoNewBands == nullptr) |
901 | 0 | { |
902 | 0 | ReportError(CE_Failure, CPLE_OutOfMemory, |
903 | 0 | "Cannot allocate band array"); |
904 | 0 | return; |
905 | 0 | } |
906 | | |
907 | 0 | papoBands = papoNewBands; |
908 | |
|
909 | 0 | for (int i = nBands; i < nNewBand; ++i) |
910 | 0 | papoBands[i] = nullptr; |
911 | |
|
912 | 0 | nBands = std::max(nBands, nNewBand); |
913 | |
|
914 | 0 | if (m_poPrivate) |
915 | 0 | { |
916 | 0 | for (int i = static_cast<int>(m_poPrivate->m_anBandMap.size()); |
917 | 0 | i < nBands; ++i) |
918 | 0 | { |
919 | 0 | m_poPrivate->m_anBandMap.push_back(i + 1); |
920 | 0 | } |
921 | 0 | } |
922 | 0 | } |
923 | | |
924 | | /* -------------------------------------------------------------------- */ |
925 | | /* Set the band. Resetting the band is currently not permitted. */ |
926 | | /* -------------------------------------------------------------------- */ |
927 | 0 | if (papoBands[nNewBand - 1] != nullptr) |
928 | 0 | { |
929 | 0 | ReportError(CE_Failure, CPLE_NotSupported, |
930 | 0 | "Cannot set band %d as it is already set", nNewBand); |
931 | 0 | return; |
932 | 0 | } |
933 | | |
934 | 0 | papoBands[nNewBand - 1] = poBand; |
935 | | |
936 | | /* -------------------------------------------------------------------- */ |
937 | | /* Set back reference information on the raster band. Note */ |
938 | | /* that the GDALDataset is a friend of the GDALRasterBand */ |
939 | | /* specifically to allow this. */ |
940 | | /* -------------------------------------------------------------------- */ |
941 | 0 | poBand->nBand = nNewBand; |
942 | 0 | poBand->poDS = this; |
943 | 0 | poBand->nRasterXSize = nRasterXSize; |
944 | 0 | poBand->nRasterYSize = nRasterYSize; |
945 | 0 | poBand->eAccess = eAccess; // Default access to be same as dataset. |
946 | 0 | } |
947 | | |
948 | | //! @endcond |
949 | | |
950 | | /************************************************************************/ |
951 | | /* SetBand() */ |
952 | | /************************************************************************/ |
953 | | |
954 | | //! @cond Doxygen_Suppress |
955 | | /** Set a band in the band array, updating the band count, and array size |
956 | | * appropriately. |
957 | | * |
958 | | * @param nNewBand new band number (indexing starts at 1) |
959 | | * @param poBand band object. |
960 | | */ |
961 | | |
962 | | void GDALDataset::SetBand(int nNewBand, std::unique_ptr<GDALRasterBand> poBand) |
963 | 0 | { |
964 | 0 | SetBand(nNewBand, poBand.release()); |
965 | 0 | } |
966 | | |
967 | | //! @endcond |
968 | | |
969 | | /************************************************************************/ |
970 | | /* GetRasterXSize() */ |
971 | | /************************************************************************/ |
972 | | |
973 | | /** |
974 | | |
975 | | \brief Fetch raster width in pixels. |
976 | | |
977 | | Equivalent of the C function GDALGetRasterXSize(). |
978 | | |
979 | | @return the width in pixels of raster bands in this GDALDataset. |
980 | | |
981 | | */ |
982 | | |
983 | | int GDALDataset::GetRasterXSize() const |
984 | 0 | { |
985 | 0 | return nRasterXSize; |
986 | 0 | } |
987 | | |
988 | | /************************************************************************/ |
989 | | /* GDALGetRasterXSize() */ |
990 | | /************************************************************************/ |
991 | | |
992 | | /** |
993 | | * \brief Fetch raster width in pixels. |
994 | | * |
995 | | * @see GDALDataset::GetRasterXSize(). |
996 | | */ |
997 | | |
998 | | int CPL_STDCALL GDALGetRasterXSize(GDALDatasetH hDataset) |
999 | | |
1000 | 0 | { |
1001 | 0 | VALIDATE_POINTER1(hDataset, "GDALGetRasterXSize", 0); |
1002 | | |
1003 | 0 | return GDALDataset::FromHandle(hDataset)->GetRasterXSize(); |
1004 | 0 | } |
1005 | | |
1006 | | /************************************************************************/ |
1007 | | /* GetRasterYSize() */ |
1008 | | /************************************************************************/ |
1009 | | |
1010 | | /** |
1011 | | |
1012 | | \brief Fetch raster height in pixels. |
1013 | | |
1014 | | Equivalent of the C function GDALGetRasterYSize(). |
1015 | | |
1016 | | @return the height in pixels of raster bands in this GDALDataset. |
1017 | | |
1018 | | */ |
1019 | | |
1020 | | int GDALDataset::GetRasterYSize() const |
1021 | 0 | { |
1022 | 0 | return nRasterYSize; |
1023 | 0 | } |
1024 | | |
1025 | | /************************************************************************/ |
1026 | | /* GDALGetRasterYSize() */ |
1027 | | /************************************************************************/ |
1028 | | |
1029 | | /** |
1030 | | * \brief Fetch raster height in pixels. |
1031 | | * |
1032 | | * @see GDALDataset::GetRasterYSize(). |
1033 | | */ |
1034 | | |
1035 | | int CPL_STDCALL GDALGetRasterYSize(GDALDatasetH hDataset) |
1036 | | |
1037 | 0 | { |
1038 | 0 | VALIDATE_POINTER1(hDataset, "GDALGetRasterYSize", 0); |
1039 | | |
1040 | 0 | return GDALDataset::FromHandle(hDataset)->GetRasterYSize(); |
1041 | 0 | } |
1042 | | |
1043 | | /************************************************************************/ |
1044 | | /* GetRasterBand() */ |
1045 | | /************************************************************************/ |
1046 | | |
1047 | | /** |
1048 | | |
1049 | | \brief Fetch a band object for a dataset. |
1050 | | |
1051 | | See GetBands() for a C++ iterator version of this method. |
1052 | | |
1053 | | Equivalent of the C function GDALGetRasterBand(). |
1054 | | |
1055 | | @param nBandId the index number of the band to fetch, from 1 to |
1056 | | GetRasterCount(). |
1057 | | |
1058 | | @return the nBandId th band object |
1059 | | |
1060 | | */ |
1061 | | |
1062 | | GDALRasterBand *GDALDataset::GetRasterBand(int nBandId) |
1063 | | |
1064 | 0 | { |
1065 | 0 | if (papoBands) |
1066 | 0 | { |
1067 | 0 | if (nBandId < 1 || nBandId > nBands) |
1068 | 0 | { |
1069 | 0 | ReportError(CE_Failure, CPLE_IllegalArg, |
1070 | 0 | "GDALDataset::GetRasterBand(%d) - Illegal band #\n", |
1071 | 0 | nBandId); |
1072 | 0 | return nullptr; |
1073 | 0 | } |
1074 | | |
1075 | 0 | return papoBands[nBandId - 1]; |
1076 | 0 | } |
1077 | 0 | return nullptr; |
1078 | 0 | } |
1079 | | |
1080 | | /************************************************************************/ |
1081 | | /* GetRasterBand() */ |
1082 | | /************************************************************************/ |
1083 | | |
1084 | | /** |
1085 | | |
1086 | | \brief Fetch a band object for a dataset. |
1087 | | |
1088 | | See GetBands() for a C++ iterator version of this method. |
1089 | | |
1090 | | Equivalent of the C function GDALGetRasterBand(). |
1091 | | |
1092 | | @param nBandId the index number of the band to fetch, from 1 to |
1093 | | GetRasterCount(). |
1094 | | |
1095 | | @return the nBandId th band object |
1096 | | |
1097 | | */ |
1098 | | |
1099 | | const GDALRasterBand *GDALDataset::GetRasterBand(int nBandId) const |
1100 | | |
1101 | 0 | { |
1102 | 0 | if (papoBands) |
1103 | 0 | { |
1104 | 0 | if (nBandId < 1 || nBandId > nBands) |
1105 | 0 | { |
1106 | 0 | ReportError(CE_Failure, CPLE_IllegalArg, |
1107 | 0 | "GDALDataset::GetRasterBand(%d) - Illegal band #\n", |
1108 | 0 | nBandId); |
1109 | 0 | return nullptr; |
1110 | 0 | } |
1111 | | |
1112 | 0 | return papoBands[nBandId - 1]; |
1113 | 0 | } |
1114 | 0 | return nullptr; |
1115 | 0 | } |
1116 | | |
1117 | | /************************************************************************/ |
1118 | | /* GDALGetRasterBand() */ |
1119 | | /************************************************************************/ |
1120 | | |
1121 | | /** |
1122 | | * \brief Fetch a band object for a dataset. |
1123 | | * @see GDALDataset::GetRasterBand(). |
1124 | | */ |
1125 | | |
1126 | | GDALRasterBandH CPL_STDCALL GDALGetRasterBand(GDALDatasetH hDS, int nBandId) |
1127 | | |
1128 | 0 | { |
1129 | 0 | VALIDATE_POINTER1(hDS, "GDALGetRasterBand", nullptr); |
1130 | | |
1131 | 0 | return GDALRasterBand::ToHandle( |
1132 | 0 | GDALDataset::FromHandle(hDS)->GetRasterBand(nBandId)); |
1133 | 0 | } |
1134 | | |
1135 | | /************************************************************************/ |
1136 | | /* GetRasterCount() */ |
1137 | | /************************************************************************/ |
1138 | | |
1139 | | /** |
1140 | | * \brief Fetch the number of raster bands on this dataset. |
1141 | | * |
1142 | | * Same as the C function GDALGetRasterCount(). |
1143 | | * |
1144 | | * @return the number of raster bands. |
1145 | | */ |
1146 | | |
1147 | | int GDALDataset::GetRasterCount() const |
1148 | 0 | { |
1149 | 0 | return papoBands ? nBands : 0; |
1150 | 0 | } |
1151 | | |
1152 | | /************************************************************************/ |
1153 | | /* GDALGetRasterCount() */ |
1154 | | /************************************************************************/ |
1155 | | |
1156 | | /** |
1157 | | * \brief Fetch the number of raster bands on this dataset. |
1158 | | * |
1159 | | * @see GDALDataset::GetRasterCount(). |
1160 | | */ |
1161 | | |
1162 | | int CPL_STDCALL GDALGetRasterCount(GDALDatasetH hDS) |
1163 | | |
1164 | 0 | { |
1165 | 0 | VALIDATE_POINTER1(hDS, "GDALGetRasterCount", 0); |
1166 | | |
1167 | 0 | return GDALDataset::FromHandle(hDS)->GetRasterCount(); |
1168 | 0 | } |
1169 | | |
1170 | | /************************************************************************/ |
1171 | | /* GetProjectionRef() */ |
1172 | | /************************************************************************/ |
1173 | | |
1174 | | /** |
1175 | | * \brief Fetch the projection definition string for this dataset. |
1176 | | * |
1177 | | * Same as the C function GDALGetProjectionRef(). |
1178 | | * |
1179 | | * The returned string defines the projection coordinate system of the |
1180 | | * image in OpenGIS WKT format. It should be suitable for use with the |
1181 | | * OGRSpatialReference class. |
1182 | | * |
1183 | | * When a projection definition is not available an empty (but not NULL) |
1184 | | * string is returned. |
1185 | | * |
1186 | | * \note Starting with GDAL 3.0, this is a compatibility layer around |
1187 | | * GetSpatialRef() |
1188 | | * |
1189 | | * @return a pointer to an internal projection reference string. It should |
1190 | | * not be altered, freed or expected to last for long. |
1191 | | * |
1192 | | * @see https://gdal.org/tutorials/osr_api_tut.html |
1193 | | */ |
1194 | | |
1195 | | const char *GDALDataset::GetProjectionRef() const |
1196 | 0 | { |
1197 | 0 | const auto poSRS = GetSpatialRef(); |
1198 | 0 | if (!poSRS || !m_poPrivate) |
1199 | 0 | { |
1200 | 0 | return ""; |
1201 | 0 | } |
1202 | 0 | char *pszWKT = nullptr; |
1203 | 0 | poSRS->exportToWkt(&pszWKT); |
1204 | 0 | if (!pszWKT) |
1205 | 0 | { |
1206 | 0 | return ""; |
1207 | 0 | } |
1208 | | |
1209 | | // If called on a thread-safe dataset, we might be called by several |
1210 | | // threads, so make sure our accesses to m_pszWKTCached are protected |
1211 | | // by a mutex. |
1212 | 0 | std::lock_guard oLock(m_poPrivate->m_oMutexWKT); |
1213 | 0 | if (m_poPrivate->m_pszWKTCached && |
1214 | 0 | strcmp(pszWKT, m_poPrivate->m_pszWKTCached) == 0) |
1215 | 0 | { |
1216 | 0 | CPLFree(pszWKT); |
1217 | 0 | return m_poPrivate->m_pszWKTCached; |
1218 | 0 | } |
1219 | 0 | CPLFree(m_poPrivate->m_pszWKTCached); |
1220 | 0 | m_poPrivate->m_pszWKTCached = pszWKT; |
1221 | 0 | return m_poPrivate->m_pszWKTCached; |
1222 | 0 | } |
1223 | | |
1224 | | /************************************************************************/ |
1225 | | /* GetSpatialRef() */ |
1226 | | /************************************************************************/ |
1227 | | |
1228 | | static thread_local int tlsEnableLayersInGetSpatialRefCounter = 0; |
1229 | | |
1230 | | /** |
1231 | | * \brief Fetch the spatial reference for this dataset. |
1232 | | * |
1233 | | * Same as the C function GDALGetSpatialRef(). |
1234 | | * |
1235 | | * When a projection definition is not available, null is returned. If used on |
1236 | | * a dataset where there are GCPs and not a geotransform, this method returns |
1237 | | * null. Use GetGCPSpatialRef() instead. |
1238 | | * |
1239 | | * Since GDAL 3.12, the default implementation of this method will iterate over |
1240 | | * vector layers and return their SRS if all geometry columns of all layers use |
1241 | | * the same SRS, or nullptr otherwise. |
1242 | | * |
1243 | | * @since GDAL 3.0 |
1244 | | * |
1245 | | * @return a pointer to an internal object. It should not be altered or freed. |
1246 | | * Its lifetime will be the one of the dataset object. |
1247 | | * |
1248 | | * @see https://gdal.org/tutorials/osr_api_tut.html |
1249 | | */ |
1250 | | |
1251 | | const OGRSpatialReference *GDALDataset::GetSpatialRef() const |
1252 | 0 | { |
1253 | 0 | if (tlsEnableLayersInGetSpatialRefCounter == 0) |
1254 | 0 | return GetSpatialRefVectorOnly(); |
1255 | 0 | return nullptr; |
1256 | 0 | } |
1257 | | |
1258 | | /************************************************************************/ |
1259 | | /* GetSpatialRefVectorOnly() */ |
1260 | | /************************************************************************/ |
1261 | | |
1262 | | /** |
1263 | | * \brief Fetch the spatial reference for this dataset (only for vector layers) |
1264 | | * |
1265 | | * The default implementation of this method will iterate over |
1266 | | * vector layers and return their SRS if all geometry columns of all layers use |
1267 | | * the same SRS, or nullptr otherwise. |
1268 | | * |
1269 | | * @since GDAL 3.12 |
1270 | | * |
1271 | | * @return a pointer to an internal object. It should not be altered or freed. |
1272 | | * Its lifetime will be the one of the dataset object. |
1273 | | */ |
1274 | | |
1275 | | const OGRSpatialReference *GDALDataset::GetSpatialRefVectorOnly() const |
1276 | 0 | { |
1277 | 0 | bool bInit = false; |
1278 | 0 | const OGRSpatialReference *poGlobalSRS = nullptr; |
1279 | 0 | for (const OGRLayer *poLayer : GetLayers()) |
1280 | 0 | { |
1281 | 0 | for (const auto *poGeomFieldDefn : |
1282 | 0 | poLayer->GetLayerDefn()->GetGeomFields()) |
1283 | 0 | { |
1284 | 0 | const auto *poSRS = poGeomFieldDefn->GetSpatialRef(); |
1285 | 0 | if (!bInit) |
1286 | 0 | { |
1287 | 0 | bInit = true; |
1288 | 0 | poGlobalSRS = poSRS; |
1289 | 0 | } |
1290 | 0 | else if ((poSRS && !poGlobalSRS) || (!poSRS && poGlobalSRS) || |
1291 | 0 | (poSRS && poGlobalSRS && !poSRS->IsSame(poGlobalSRS))) |
1292 | 0 | { |
1293 | 0 | CPLDebug("GDAL", |
1294 | 0 | "Not all geometry fields or layers have the same CRS"); |
1295 | 0 | return nullptr; |
1296 | 0 | } |
1297 | 0 | } |
1298 | 0 | } |
1299 | 0 | return poGlobalSRS; |
1300 | 0 | } |
1301 | | |
1302 | | /************************************************************************/ |
1303 | | /* GetSpatialRefRasterOnly() */ |
1304 | | /************************************************************************/ |
1305 | | |
1306 | | /** |
1307 | | * \brief Fetch the spatial reference for this dataset (ignoring vector layers) |
1308 | | * |
1309 | | * @since GDAL 3.12 |
1310 | | * |
1311 | | * @return a pointer to an internal object. It should not be altered or freed. |
1312 | | * Its lifetime will be the one of the dataset object. |
1313 | | */ |
1314 | | |
1315 | | const OGRSpatialReference *GDALDataset::GetSpatialRefRasterOnly() const |
1316 | 0 | { |
1317 | 0 | ++tlsEnableLayersInGetSpatialRefCounter; |
1318 | 0 | const auto poRet = GetSpatialRef(); |
1319 | 0 | --tlsEnableLayersInGetSpatialRefCounter; |
1320 | 0 | return poRet; |
1321 | 0 | } |
1322 | | |
1323 | | /************************************************************************/ |
1324 | | /* GDALGetSpatialRef() */ |
1325 | | /************************************************************************/ |
1326 | | |
1327 | | /** |
1328 | | * \brief Fetch the spatial reference for this dataset. |
1329 | | * |
1330 | | * Same as the C++ method GDALDataset::GetSpatialRef() |
1331 | | * |
1332 | | * @since GDAL 3.0 |
1333 | | * |
1334 | | * @see GDALDataset::GetSpatialRef() |
1335 | | */ |
1336 | | |
1337 | | OGRSpatialReferenceH GDALGetSpatialRef(GDALDatasetH hDS) |
1338 | | |
1339 | 0 | { |
1340 | 0 | VALIDATE_POINTER1(hDS, "GDALGetSpatialRef", nullptr); |
1341 | | |
1342 | 0 | return OGRSpatialReference::ToHandle(const_cast<OGRSpatialReference *>( |
1343 | 0 | GDALDataset::FromHandle(hDS)->GetSpatialRef())); |
1344 | 0 | } |
1345 | | |
1346 | | /************************************************************************/ |
1347 | | /* GDALGetProjectionRef() */ |
1348 | | /************************************************************************/ |
1349 | | |
1350 | | /** |
1351 | | * \brief Fetch the projection definition string for this dataset. |
1352 | | * |
1353 | | * @see GDALDataset::GetProjectionRef() |
1354 | | */ |
1355 | | |
1356 | | const char *CPL_STDCALL GDALGetProjectionRef(GDALDatasetH hDS) |
1357 | | |
1358 | 0 | { |
1359 | 0 | VALIDATE_POINTER1(hDS, "GDALGetProjectionRef", nullptr); |
1360 | | |
1361 | 0 | return GDALDataset::FromHandle(hDS)->GetProjectionRef(); |
1362 | 0 | } |
1363 | | |
1364 | | /************************************************************************/ |
1365 | | /* SetProjection() */ |
1366 | | /************************************************************************/ |
1367 | | |
1368 | | /** |
1369 | | * \brief Set the projection reference string for this dataset. |
1370 | | * |
1371 | | * The string should be in OGC WKT or PROJ.4 format. An error may occur |
1372 | | * because of incorrectly specified projection strings, because the dataset |
1373 | | * is not writable, or because the dataset does not support the indicated |
1374 | | * projection. Many formats do not support writing projections. |
1375 | | * |
1376 | | * This method is the same as the C GDALSetProjection() function. |
1377 | | * |
1378 | | * \note Startig with GDAL 3.0, this is a compatibility layer around |
1379 | | * SetSpatialRef() |
1380 | | |
1381 | | * @param pszProjection projection reference string. |
1382 | | * |
1383 | | * @return CE_Failure if an error occurs, otherwise CE_None. |
1384 | | */ |
1385 | | |
1386 | | CPLErr GDALDataset::SetProjection(const char *pszProjection) |
1387 | 0 | { |
1388 | 0 | if (pszProjection && pszProjection[0] != '\0') |
1389 | 0 | { |
1390 | 0 | OGRSpatialReference oSRS; |
1391 | 0 | oSRS.SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER); |
1392 | 0 | if (oSRS.SetFromUserInput(pszProjection) != OGRERR_NONE) |
1393 | 0 | { |
1394 | 0 | return CE_Failure; |
1395 | 0 | } |
1396 | 0 | return SetSpatialRef(&oSRS); |
1397 | 0 | } |
1398 | 0 | else |
1399 | 0 | { |
1400 | 0 | return SetSpatialRef(nullptr); |
1401 | 0 | } |
1402 | 0 | } |
1403 | | |
1404 | | /************************************************************************/ |
1405 | | /* SetSpatialRef() */ |
1406 | | /************************************************************************/ |
1407 | | |
1408 | | /** |
1409 | | * \brief Set the spatial reference system for this dataset. |
1410 | | * |
1411 | | * An error may occur because the dataset |
1412 | | * is not writable, or because the dataset does not support the indicated |
1413 | | * projection. Many formats do not support writing projections. |
1414 | | * |
1415 | | * This method is the same as the C GDALSetSpatialRef() function. |
1416 | | * |
1417 | | * @since GDAL 3.0 |
1418 | | |
1419 | | * @param poSRS spatial reference system object. nullptr can potentially be |
1420 | | * passed for drivers that support unsetting the SRS. |
1421 | | * |
1422 | | * @return CE_Failure if an error occurs, otherwise CE_None. |
1423 | | */ |
1424 | | |
1425 | | CPLErr GDALDataset::SetSpatialRef(CPL_UNUSED const OGRSpatialReference *poSRS) |
1426 | 0 | { |
1427 | 0 | if (!(GetMOFlags() & GMO_IGNORE_UNIMPLEMENTED)) |
1428 | 0 | ReportError(CE_Failure, CPLE_NotSupported, |
1429 | 0 | "Dataset does not support the SetSpatialRef() method."); |
1430 | 0 | return CE_Failure; |
1431 | 0 | } |
1432 | | |
1433 | | /************************************************************************/ |
1434 | | /* GDALSetSpatialRef() */ |
1435 | | /************************************************************************/ |
1436 | | |
1437 | | /** |
1438 | | * \brief Set the spatial reference system for this dataset. |
1439 | | * |
1440 | | * @since GDAL 3.0 |
1441 | | * |
1442 | | * @see GDALDataset::SetSpatialRef() |
1443 | | */ |
1444 | | |
1445 | | CPLErr GDALSetSpatialRef(GDALDatasetH hDS, OGRSpatialReferenceH hSRS) |
1446 | | |
1447 | 0 | { |
1448 | 0 | VALIDATE_POINTER1(hDS, "GDALSetSpatialRef", CE_Failure); |
1449 | | |
1450 | 0 | return GDALDataset::FromHandle(hDS)->SetSpatialRef( |
1451 | 0 | OGRSpatialReference::FromHandle(hSRS)); |
1452 | 0 | } |
1453 | | |
1454 | | /************************************************************************/ |
1455 | | /* GDALSetProjection() */ |
1456 | | /************************************************************************/ |
1457 | | |
1458 | | /** |
1459 | | * \brief Set the projection reference string for this dataset. |
1460 | | * |
1461 | | * @see GDALDataset::SetProjection() |
1462 | | */ |
1463 | | |
1464 | | CPLErr CPL_STDCALL GDALSetProjection(GDALDatasetH hDS, |
1465 | | const char *pszProjection) |
1466 | | |
1467 | 0 | { |
1468 | 0 | VALIDATE_POINTER1(hDS, "GDALSetProjection", CE_Failure); |
1469 | | |
1470 | 0 | return GDALDataset::FromHandle(hDS)->SetProjection(pszProjection); |
1471 | 0 | } |
1472 | | |
1473 | | /************************************************************************/ |
1474 | | /* GetGeoTransform() */ |
1475 | | /************************************************************************/ |
1476 | | |
1477 | | /** |
1478 | | * \brief Fetch the affine transformation coefficients. |
1479 | | * |
1480 | | * Fetches the coefficients for transforming between pixel/line (P,L) raster |
1481 | | * space, and projection coordinates (Xp,Yp) space. |
1482 | | * |
1483 | | * \code |
1484 | | * Xp = gt[0] + P*gt[1] + L*gt[2]; |
1485 | | * Yp = gt[3] + P*padfTransform[4] + L*gt[5]; |
1486 | | * \endcode |
1487 | | * |
1488 | | * In a north up image, gt[1] is the pixel width, and |
1489 | | * gt[5] is the pixel height. The upper left corner of the |
1490 | | * upper left pixel is at position (gt[0],gt[3]). |
1491 | | * |
1492 | | * The default transform is (0,1,0,0,0,1) and should be returned even when |
1493 | | * a CE_Failure error is returned, such as for formats that don't support |
1494 | | * transformation to projection coordinates. |
1495 | | * |
1496 | | * This method does the same thing as the C GDALGetGeoTransform() function. |
1497 | | * |
1498 | | * @param gt an existing six double buffer into which the |
1499 | | * transformation will be placed. |
1500 | | * |
1501 | | * @return CE_None on success, or CE_Failure if no transform can be fetched. |
1502 | | * |
1503 | | * @since 3.12 |
1504 | | */ |
1505 | | |
1506 | | CPLErr GDALDataset::GetGeoTransform(GDALGeoTransform >) const |
1507 | | |
1508 | 0 | { |
1509 | 0 | gt = GDALGeoTransform(); |
1510 | |
|
1511 | 0 | return CE_Failure; |
1512 | 0 | } |
1513 | | |
1514 | | /************************************************************************/ |
1515 | | /* GetGeoTransform() */ |
1516 | | /************************************************************************/ |
1517 | | |
1518 | | /** |
1519 | | * \brief Fetch the affine transformation coefficients. |
1520 | | * |
1521 | | * Fetches the coefficients for transforming between pixel/line (P,L) raster |
1522 | | * space, and projection coordinates (Xp,Yp) space. |
1523 | | * |
1524 | | * \code |
1525 | | * Xp = padfTransform[0] + P*padfTransform[1] + L*padfTransform[2]; |
1526 | | * Yp = padfTransform[3] + P*padfTransform[4] + L*padfTransform[5]; |
1527 | | * \endcode |
1528 | | * |
1529 | | * In a north up image, padfTransform[1] is the pixel width, and |
1530 | | * padfTransform[5] is the pixel height. The upper left corner of the |
1531 | | * upper left pixel is at position (padfTransform[0],padfTransform[3]). |
1532 | | * |
1533 | | * The default transform is (0,1,0,0,0,1) and should be returned even when |
1534 | | * a CE_Failure error is returned, such as for formats that don't support |
1535 | | * transformation to projection coordinates. |
1536 | | * |
1537 | | * This method does the same thing as the C GDALGetGeoTransform() function. |
1538 | | * |
1539 | | * @param padfTransform an existing six double buffer into which the |
1540 | | * transformation will be placed. |
1541 | | * |
1542 | | * @return CE_None on success, or CE_Failure if no transform can be fetched. |
1543 | | * |
1544 | | * @deprecated since 3.12. Use GetGeoTransform(GDALGeoTransform&) instead |
1545 | | */ |
1546 | | |
1547 | | CPLErr GDALDataset::GetGeoTransform(double *padfTransform) const |
1548 | | |
1549 | 0 | { |
1550 | 0 | return GetGeoTransform( |
1551 | 0 | *reinterpret_cast<GDALGeoTransform *>(padfTransform)); |
1552 | 0 | } |
1553 | | |
1554 | | /************************************************************************/ |
1555 | | /* GDALGetGeoTransform() */ |
1556 | | /************************************************************************/ |
1557 | | |
1558 | | /** |
1559 | | * \brief Fetch the affine transformation coefficients. |
1560 | | * |
1561 | | * @see GDALDataset::GetGeoTransform() |
1562 | | */ |
1563 | | |
1564 | | CPLErr CPL_STDCALL GDALGetGeoTransform(GDALDatasetH hDS, double *padfTransform) |
1565 | | |
1566 | 0 | { |
1567 | 0 | VALIDATE_POINTER1(hDS, "GDALGetGeoTransform", CE_Failure); |
1568 | | |
1569 | 0 | return GDALDataset::FromHandle(hDS)->GetGeoTransform( |
1570 | 0 | *reinterpret_cast<GDALGeoTransform *>(padfTransform)); |
1571 | 0 | } |
1572 | | |
1573 | | /************************************************************************/ |
1574 | | /* SetGeoTransform() */ |
1575 | | /************************************************************************/ |
1576 | | |
1577 | | /** |
1578 | | * \fn GDALDataset::SetGeoTransform(const GDALGeoTransform&) |
1579 | | * \brief Set the affine transformation coefficients. |
1580 | | * |
1581 | | * See GetGeoTransform() for details on the meaning of the padfTransform |
1582 | | * coefficients. |
1583 | | * |
1584 | | * This method does the same thing as the C GDALSetGeoTransform() function. |
1585 | | * |
1586 | | * @param gt the transformation coefficients to be written with the dataset. |
1587 | | * |
1588 | | * @return CE_None on success, or CE_Failure if this transform cannot be |
1589 | | * written. |
1590 | | * |
1591 | | * @since 3.12 |
1592 | | */ |
1593 | | |
1594 | | CPLErr GDALDataset::SetGeoTransform(CPL_UNUSED const GDALGeoTransform >) |
1595 | | |
1596 | 0 | { |
1597 | 0 | if (!(GetMOFlags() & GMO_IGNORE_UNIMPLEMENTED)) |
1598 | 0 | ReportError(CE_Failure, CPLE_NotSupported, |
1599 | 0 | "SetGeoTransform() not supported for this dataset."); |
1600 | |
|
1601 | 0 | return CE_Failure; |
1602 | 0 | } |
1603 | | |
1604 | | /************************************************************************/ |
1605 | | /* SetGeoTransform() */ |
1606 | | /************************************************************************/ |
1607 | | |
1608 | | /** |
1609 | | * \brief Set the affine transformation coefficients. |
1610 | | * |
1611 | | * See GetGeoTransform() for details on the meaning of the padfTransform |
1612 | | * coefficients. |
1613 | | * |
1614 | | * This method does the same thing as the C GDALSetGeoTransform() function. |
1615 | | * |
1616 | | * @param padfTransform a six double buffer containing the transformation |
1617 | | * coefficients to be written with the dataset. |
1618 | | * |
1619 | | * @return CE_None on success, or CE_Failure if this transform cannot be |
1620 | | * written. |
1621 | | * |
1622 | | * @deprecated since 3.12. Use SetGeoTransform(const GDALGeoTransform&) instead |
1623 | | */ |
1624 | | CPLErr GDALDataset::SetGeoTransform(const double *padfTransform) |
1625 | | |
1626 | 0 | { |
1627 | 0 | return SetGeoTransform( |
1628 | 0 | *reinterpret_cast<const GDALGeoTransform *>(padfTransform)); |
1629 | 0 | } |
1630 | | |
1631 | | /************************************************************************/ |
1632 | | /* GDALSetGeoTransform() */ |
1633 | | /************************************************************************/ |
1634 | | |
1635 | | /** |
1636 | | * \brief Set the affine transformation coefficients. |
1637 | | * |
1638 | | * @see GDALDataset::SetGeoTransform() |
1639 | | */ |
1640 | | |
1641 | | CPLErr CPL_STDCALL GDALSetGeoTransform(GDALDatasetH hDS, |
1642 | | const double *padfTransform) |
1643 | | |
1644 | 0 | { |
1645 | 0 | VALIDATE_POINTER1(hDS, "GDALSetGeoTransform", CE_Failure); |
1646 | 0 | VALIDATE_POINTER1(padfTransform, "GDALSetGeoTransform", CE_Failure); |
1647 | | |
1648 | 0 | return GDALDataset::FromHandle(hDS)->SetGeoTransform( |
1649 | 0 | *reinterpret_cast<const GDALGeoTransform *>(padfTransform)); |
1650 | 0 | } |
1651 | | |
1652 | | /************************************************************************/ |
1653 | | /* GetInternalHandle() */ |
1654 | | /************************************************************************/ |
1655 | | |
1656 | | /** |
1657 | | * \fn GDALDataset::GetInternalHandle(const char*) |
1658 | | * \brief Fetch a format specific internally meaningful handle. |
1659 | | * |
1660 | | * This method is the same as the C GDALGetInternalHandle() method. |
1661 | | * |
1662 | | * @param pszHandleName the handle name desired. The meaningful names |
1663 | | * will be specific to the file format. |
1664 | | * |
1665 | | * @return the desired handle value, or NULL if not recognized/supported. |
1666 | | */ |
1667 | | |
1668 | | void *GDALDataset::GetInternalHandle(CPL_UNUSED const char *pszHandleName) |
1669 | | |
1670 | 0 | { |
1671 | 0 | return nullptr; |
1672 | 0 | } |
1673 | | |
1674 | | /************************************************************************/ |
1675 | | /* GDALGetInternalHandle() */ |
1676 | | /************************************************************************/ |
1677 | | |
1678 | | /** |
1679 | | * \brief Fetch a format specific internally meaningful handle. |
1680 | | * |
1681 | | * @see GDALDataset::GetInternalHandle() |
1682 | | */ |
1683 | | |
1684 | | void *CPL_STDCALL GDALGetInternalHandle(GDALDatasetH hDS, |
1685 | | const char *pszRequest) |
1686 | | |
1687 | 0 | { |
1688 | 0 | VALIDATE_POINTER1(hDS, "GDALGetInternalHandle", nullptr); |
1689 | | |
1690 | 0 | return GDALDataset::FromHandle(hDS)->GetInternalHandle(pszRequest); |
1691 | 0 | } |
1692 | | |
1693 | | /************************************************************************/ |
1694 | | /* GetDriver() */ |
1695 | | /************************************************************************/ |
1696 | | |
1697 | | /** |
1698 | | * \brief Fetch the driver to which this dataset relates. |
1699 | | * |
1700 | | * This method is the same as the C GDALGetDatasetDriver() function. |
1701 | | * |
1702 | | * @return the driver on which the dataset was created with GDALOpen() or |
1703 | | * GDALCreate(). |
1704 | | */ |
1705 | | |
1706 | | GDALDriver *GDALDataset::GetDriver() |
1707 | 0 | { |
1708 | 0 | return poDriver; |
1709 | 0 | } |
1710 | | |
1711 | | /************************************************************************/ |
1712 | | /* GDALGetDatasetDriver() */ |
1713 | | /************************************************************************/ |
1714 | | |
1715 | | /** |
1716 | | * \brief Fetch the driver to which this dataset relates. |
1717 | | * |
1718 | | * @see GDALDataset::GetDriver() |
1719 | | */ |
1720 | | |
1721 | | GDALDriverH CPL_STDCALL GDALGetDatasetDriver(GDALDatasetH hDataset) |
1722 | | |
1723 | 0 | { |
1724 | 0 | VALIDATE_POINTER1(hDataset, "GDALGetDatasetDriver", nullptr); |
1725 | | |
1726 | 0 | return static_cast<GDALDriverH>( |
1727 | 0 | GDALDataset::FromHandle(hDataset)->GetDriver()); |
1728 | 0 | } |
1729 | | |
1730 | | /************************************************************************/ |
1731 | | /* Reference() */ |
1732 | | /************************************************************************/ |
1733 | | |
1734 | | /** |
1735 | | * \brief Add one to dataset reference count. |
1736 | | * |
1737 | | * The reference is one after instantiation. |
1738 | | * |
1739 | | * This method is the same as the C GDALReferenceDataset() function. |
1740 | | * |
1741 | | * @return the post-increment reference count. |
1742 | | */ |
1743 | | |
1744 | | int GDALDataset::Reference() |
1745 | 0 | { |
1746 | 0 | return ++nRefCount; |
1747 | 0 | } |
1748 | | |
1749 | | /************************************************************************/ |
1750 | | /* GDALReferenceDataset() */ |
1751 | | /************************************************************************/ |
1752 | | |
1753 | | /** |
1754 | | * \brief Add one to dataset reference count. |
1755 | | * |
1756 | | * @see GDALDataset::Reference() |
1757 | | */ |
1758 | | |
1759 | | int CPL_STDCALL GDALReferenceDataset(GDALDatasetH hDataset) |
1760 | | |
1761 | 0 | { |
1762 | 0 | VALIDATE_POINTER1(hDataset, "GDALReferenceDataset", 0); |
1763 | | |
1764 | 0 | return GDALDataset::FromHandle(hDataset)->Reference(); |
1765 | 0 | } |
1766 | | |
1767 | | /************************************************************************/ |
1768 | | /* Dereference() */ |
1769 | | /************************************************************************/ |
1770 | | |
1771 | | /** |
1772 | | * \brief Subtract one from dataset reference count. |
1773 | | * |
1774 | | * The reference is one after instantiation. Generally when the reference |
1775 | | * count has dropped to zero the dataset may be safely deleted (closed). |
1776 | | * |
1777 | | * This method is the same as the C GDALDereferenceDataset() function. |
1778 | | * |
1779 | | * @return the post-decrement reference count. |
1780 | | */ |
1781 | | |
1782 | | int GDALDataset::Dereference() |
1783 | 0 | { |
1784 | 0 | return --nRefCount; |
1785 | 0 | } |
1786 | | |
1787 | | /************************************************************************/ |
1788 | | /* GDALDereferenceDataset() */ |
1789 | | /************************************************************************/ |
1790 | | |
1791 | | /** |
1792 | | * \brief Subtract one from dataset reference count. |
1793 | | * |
1794 | | * @see GDALDataset::Dereference() |
1795 | | */ |
1796 | | |
1797 | | int CPL_STDCALL GDALDereferenceDataset(GDALDatasetH hDataset) |
1798 | | |
1799 | 0 | { |
1800 | 0 | VALIDATE_POINTER1(hDataset, "GDALDereferenceDataset", 0); |
1801 | | |
1802 | 0 | return GDALDataset::FromHandle(hDataset)->Dereference(); |
1803 | 0 | } |
1804 | | |
1805 | | /************************************************************************/ |
1806 | | /* ReleaseRef() */ |
1807 | | /************************************************************************/ |
1808 | | |
1809 | | /** |
1810 | | * \brief Drop a reference to this object, and destroy if no longer referenced. |
1811 | | * @return TRUE if the object has been destroyed. |
1812 | | */ |
1813 | | |
1814 | | int GDALDataset::ReleaseRef() |
1815 | | |
1816 | 0 | { |
1817 | 0 | if (Dereference() <= 0) |
1818 | 0 | { |
1819 | 0 | nRefCount = 1; |
1820 | 0 | delete this; |
1821 | 0 | return TRUE; |
1822 | 0 | } |
1823 | 0 | return FALSE; |
1824 | 0 | } |
1825 | | |
1826 | | /************************************************************************/ |
1827 | | /* GDALReleaseDataset() */ |
1828 | | /************************************************************************/ |
1829 | | |
1830 | | /** |
1831 | | * \brief Drop a reference to this object, and destroy if no longer referenced. |
1832 | | * |
1833 | | * @see GDALDataset::ReleaseRef() |
1834 | | */ |
1835 | | |
1836 | | int CPL_STDCALL GDALReleaseDataset(GDALDatasetH hDataset) |
1837 | | |
1838 | 0 | { |
1839 | 0 | VALIDATE_POINTER1(hDataset, "GDALReleaseDataset", 0); |
1840 | | |
1841 | 0 | return GDALDataset::FromHandle(hDataset)->ReleaseRef(); |
1842 | 0 | } |
1843 | | |
1844 | | /************************************************************************/ |
1845 | | /* GetShared() */ |
1846 | | /************************************************************************/ |
1847 | | |
1848 | | /** |
1849 | | * \brief Returns shared flag. |
1850 | | * |
1851 | | * @return TRUE if the GDALDataset is available for sharing, or FALSE if not. |
1852 | | */ |
1853 | | |
1854 | | int GDALDataset::GetShared() const |
1855 | 0 | { |
1856 | 0 | return bShared; |
1857 | 0 | } |
1858 | | |
1859 | | /************************************************************************/ |
1860 | | /* MarkAsShared() */ |
1861 | | /************************************************************************/ |
1862 | | |
1863 | | /** |
1864 | | * \brief Mark this dataset as available for sharing. |
1865 | | */ |
1866 | | |
1867 | | void GDALDataset::MarkAsShared() |
1868 | | |
1869 | 0 | { |
1870 | 0 | CPLAssert(!bShared); |
1871 | | |
1872 | 0 | bShared = true; |
1873 | 0 | if (bIsInternal) |
1874 | 0 | return; |
1875 | | |
1876 | 0 | GIntBig nPID = GDALGetResponsiblePIDForCurrentThread(); |
1877 | | |
1878 | | // Insert the dataset in the set of shared opened datasets. |
1879 | 0 | CPLMutexHolderD(&hDLMutex); |
1880 | 0 | if (phSharedDatasetSet == nullptr) |
1881 | 0 | phSharedDatasetSet = |
1882 | 0 | CPLHashSetNew(GDALSharedDatasetHashFunc, GDALSharedDatasetEqualFunc, |
1883 | 0 | GDALSharedDatasetFreeFunc); |
1884 | |
|
1885 | 0 | SharedDatasetCtxt *psStruct = |
1886 | 0 | static_cast<SharedDatasetCtxt *>(CPLMalloc(sizeof(SharedDatasetCtxt))); |
1887 | 0 | psStruct->poDS = this; |
1888 | 0 | psStruct->nPID = nPID; |
1889 | 0 | psStruct->nOpenFlags = nOpenFlags & ~GDAL_OF_SHARED; |
1890 | 0 | psStruct->pszDescription = CPLStrdup(GetDescription()); |
1891 | 0 | std::string osConcatenatedOpenOptions = |
1892 | 0 | GDALSharedDatasetConcatenateOpenOptions(papszOpenOptions); |
1893 | 0 | psStruct->pszConcatenatedOpenOptions = |
1894 | 0 | CPLStrdup(osConcatenatedOpenOptions.c_str()); |
1895 | 0 | if (CPLHashSetLookup(phSharedDatasetSet, psStruct) != nullptr) |
1896 | 0 | { |
1897 | 0 | GDALSharedDatasetFreeFunc(psStruct); |
1898 | 0 | ReportError(CE_Failure, CPLE_AppDefined, |
1899 | 0 | "An existing shared dataset already has this description. " |
1900 | 0 | "This should not happen."); |
1901 | 0 | } |
1902 | 0 | else |
1903 | 0 | { |
1904 | 0 | CPLHashSetInsert(phSharedDatasetSet, psStruct); |
1905 | |
|
1906 | 0 | (*poAllDatasetMap)[this] = nPID; |
1907 | 0 | } |
1908 | 0 | } |
1909 | | |
1910 | | /************************************************************************/ |
1911 | | /* MarkSuppressOnClose() */ |
1912 | | /************************************************************************/ |
1913 | | |
1914 | | /** Set that the dataset must be deleted on close. |
1915 | | * |
1916 | | * This is the same as C function GDALDatasetMarkSuppressOnClose() |
1917 | | */ |
1918 | | void GDALDataset::MarkSuppressOnClose() |
1919 | 0 | { |
1920 | 0 | bSuppressOnClose = true; |
1921 | 0 | } |
1922 | | |
1923 | | /************************************************************************/ |
1924 | | /* GDALDatasetMarkSuppressOnClose() */ |
1925 | | /************************************************************************/ |
1926 | | |
1927 | | /** Set that the dataset must be deleted on close. |
1928 | | * |
1929 | | * This is the same as C++ method GDALDataset::MarkSuppressOnClose() |
1930 | | * |
1931 | | * @since GDAL 3.12 |
1932 | | */ |
1933 | | |
1934 | | void GDALDatasetMarkSuppressOnClose(GDALDatasetH hDS) |
1935 | 0 | { |
1936 | 0 | VALIDATE_POINTER0(hDS, "GDALDatasetMarkSuppressOnClose"); |
1937 | | |
1938 | 0 | return GDALDataset::FromHandle(hDS)->MarkSuppressOnClose(); |
1939 | 0 | } |
1940 | | |
1941 | | /************************************************************************/ |
1942 | | /* UnMarkSuppressOnClose() */ |
1943 | | /************************************************************************/ |
1944 | | |
1945 | | /** Remove the flag requesting the dataset to be deleted on close. */ |
1946 | | void GDALDataset::UnMarkSuppressOnClose() |
1947 | 0 | { |
1948 | 0 | bSuppressOnClose = false; |
1949 | 0 | } |
1950 | | |
1951 | | /************************************************************************/ |
1952 | | /* CleanupPostFileClosing() */ |
1953 | | /************************************************************************/ |
1954 | | |
1955 | | /** This method should be called by driver implementations in their destructor, |
1956 | | * after having closed all files, but before having freed resources that |
1957 | | * are needed for their GetFileList() implementation. |
1958 | | * This is used to implement MarkSuppressOnClose behavior. |
1959 | | */ |
1960 | | void GDALDataset::CleanupPostFileClosing() |
1961 | 0 | { |
1962 | 0 | if (IsMarkedSuppressOnClose()) |
1963 | 0 | { |
1964 | 0 | char **papszFileList = GetFileList(); |
1965 | 0 | for (int i = 0; papszFileList && papszFileList[i]; ++i) |
1966 | 0 | VSIUnlink(papszFileList[i]); |
1967 | 0 | CSLDestroy(papszFileList); |
1968 | 0 | } |
1969 | 0 | } |
1970 | | |
1971 | | /************************************************************************/ |
1972 | | /* GetGCPCount() */ |
1973 | | /************************************************************************/ |
1974 | | |
1975 | | /** |
1976 | | * \brief Get number of GCPs. |
1977 | | * |
1978 | | * This method is the same as the C function GDALGetGCPCount(). |
1979 | | * |
1980 | | * @return number of GCPs for this dataset. Zero if there are none. |
1981 | | */ |
1982 | | |
1983 | | int GDALDataset::GetGCPCount() |
1984 | 0 | { |
1985 | 0 | return 0; |
1986 | 0 | } |
1987 | | |
1988 | | /************************************************************************/ |
1989 | | /* GDALGetGCPCount() */ |
1990 | | /************************************************************************/ |
1991 | | |
1992 | | /** |
1993 | | * \brief Get number of GCPs. |
1994 | | * |
1995 | | * @see GDALDataset::GetGCPCount() |
1996 | | */ |
1997 | | |
1998 | | int CPL_STDCALL GDALGetGCPCount(GDALDatasetH hDS) |
1999 | | |
2000 | 0 | { |
2001 | 0 | VALIDATE_POINTER1(hDS, "GDALGetGCPCount", 0); |
2002 | | |
2003 | 0 | return GDALDataset::FromHandle(hDS)->GetGCPCount(); |
2004 | 0 | } |
2005 | | |
2006 | | /************************************************************************/ |
2007 | | /* GetGCPProjection() */ |
2008 | | /************************************************************************/ |
2009 | | |
2010 | | /** |
2011 | | * \brief Get output projection for GCPs. |
2012 | | * |
2013 | | * This method is the same as the C function GDALGetGCPProjection(). |
2014 | | * |
2015 | | * The projection string follows the normal rules from GetProjectionRef(). |
2016 | | * |
2017 | | * \note Starting with GDAL 3.0, this is a compatibility layer around |
2018 | | * GetGCPSpatialRef() |
2019 | | * |
2020 | | * @return internal projection string or "" if there are no GCPs. |
2021 | | * It should not be altered, freed or expected to last for long. |
2022 | | */ |
2023 | | |
2024 | | const char *GDALDataset::GetGCPProjection() const |
2025 | 0 | { |
2026 | 0 | const auto poSRS = GetGCPSpatialRef(); |
2027 | 0 | if (!poSRS || !m_poPrivate) |
2028 | 0 | { |
2029 | 0 | return ""; |
2030 | 0 | } |
2031 | 0 | char *pszWKT = nullptr; |
2032 | 0 | poSRS->exportToWkt(&pszWKT); |
2033 | 0 | if (!pszWKT) |
2034 | 0 | { |
2035 | 0 | return ""; |
2036 | 0 | } |
2037 | | |
2038 | | // If called on a thread-safe dataset, we might be called by several |
2039 | | // threads, so make sure our accesses to m_pszWKTCached are protected |
2040 | | // by a mutex. |
2041 | 0 | std::lock_guard oLock(m_poPrivate->m_oMutexWKT); |
2042 | 0 | if (m_poPrivate->m_pszWKTGCPCached && |
2043 | 0 | strcmp(pszWKT, m_poPrivate->m_pszWKTGCPCached) == 0) |
2044 | 0 | { |
2045 | 0 | CPLFree(pszWKT); |
2046 | 0 | return m_poPrivate->m_pszWKTGCPCached; |
2047 | 0 | } |
2048 | 0 | CPLFree(m_poPrivate->m_pszWKTGCPCached); |
2049 | 0 | m_poPrivate->m_pszWKTGCPCached = pszWKT; |
2050 | 0 | return m_poPrivate->m_pszWKTGCPCached; |
2051 | 0 | } |
2052 | | |
2053 | | /************************************************************************/ |
2054 | | /* GetGCPSpatialRef() */ |
2055 | | /************************************************************************/ |
2056 | | |
2057 | | /** |
2058 | | * \brief Get output spatial reference system for GCPs. |
2059 | | * |
2060 | | * Same as the C function GDALGetGCPSpatialRef(). |
2061 | | * |
2062 | | * When a SRS is not available, null is returned. If used on |
2063 | | * a dataset where there is a geotransform, and not GCPs, this method returns |
2064 | | * null. Use GetSpatialRef() instead. |
2065 | | * |
2066 | | * @since GDAL 3.0 |
2067 | | * |
2068 | | * @return a pointer to an internal object. It should not be altered or freed. |
2069 | | * Its lifetime will be the one of the dataset object, or until the next |
2070 | | * call to this method. |
2071 | | */ |
2072 | | |
2073 | | const OGRSpatialReference *GDALDataset::GetGCPSpatialRef() const |
2074 | 0 | { |
2075 | 0 | return nullptr; |
2076 | 0 | } |
2077 | | |
2078 | | /************************************************************************/ |
2079 | | /* GDALGetGCPSpatialRef() */ |
2080 | | /************************************************************************/ |
2081 | | |
2082 | | /** |
2083 | | * \brief Get output spatial reference system for GCPs. |
2084 | | * |
2085 | | * @since GDAL 3.0 |
2086 | | * |
2087 | | * @see GDALDataset::GetGCPSpatialRef() |
2088 | | */ |
2089 | | |
2090 | | OGRSpatialReferenceH GDALGetGCPSpatialRef(GDALDatasetH hDS) |
2091 | | |
2092 | 0 | { |
2093 | 0 | VALIDATE_POINTER1(hDS, "GDALGetGCPSpatialRef", nullptr); |
2094 | | |
2095 | 0 | return OGRSpatialReference::ToHandle(const_cast<OGRSpatialReference *>( |
2096 | 0 | GDALDataset::FromHandle(hDS)->GetGCPSpatialRef())); |
2097 | 0 | } |
2098 | | |
2099 | | /************************************************************************/ |
2100 | | /* GDALGetGCPProjection() */ |
2101 | | /************************************************************************/ |
2102 | | |
2103 | | /** |
2104 | | * \brief Get output projection for GCPs. |
2105 | | * |
2106 | | * @see GDALDataset::GetGCPProjection() |
2107 | | */ |
2108 | | |
2109 | | const char *CPL_STDCALL GDALGetGCPProjection(GDALDatasetH hDS) |
2110 | | |
2111 | 0 | { |
2112 | 0 | VALIDATE_POINTER1(hDS, "GDALGetGCPProjection", nullptr); |
2113 | | |
2114 | 0 | return GDALDataset::FromHandle(hDS)->GetGCPProjection(); |
2115 | 0 | } |
2116 | | |
2117 | | /************************************************************************/ |
2118 | | /* GetGCPs() */ |
2119 | | /************************************************************************/ |
2120 | | |
2121 | | /** |
2122 | | * \brief Fetch GCPs. |
2123 | | * |
2124 | | * This method is the same as the C function GDALGetGCPs(). |
2125 | | * |
2126 | | * @return pointer to internal GCP structure list. It should not be modified, |
2127 | | * and may change on the next GDAL call. |
2128 | | */ |
2129 | | |
2130 | | const GDAL_GCP *GDALDataset::GetGCPs() |
2131 | 0 | { |
2132 | 0 | return nullptr; |
2133 | 0 | } |
2134 | | |
2135 | | /************************************************************************/ |
2136 | | /* GDALGetGCPs() */ |
2137 | | /************************************************************************/ |
2138 | | |
2139 | | /** |
2140 | | * \brief Fetch GCPs. |
2141 | | * |
2142 | | * @see GDALDataset::GetGCPs() |
2143 | | */ |
2144 | | |
2145 | | const GDAL_GCP *CPL_STDCALL GDALGetGCPs(GDALDatasetH hDS) |
2146 | | |
2147 | 0 | { |
2148 | 0 | VALIDATE_POINTER1(hDS, "GDALGetGCPs", nullptr); |
2149 | | |
2150 | 0 | return GDALDataset::FromHandle(hDS)->GetGCPs(); |
2151 | 0 | } |
2152 | | |
2153 | | /************************************************************************/ |
2154 | | /* SetGCPs() */ |
2155 | | /************************************************************************/ |
2156 | | |
2157 | | /** |
2158 | | * \brief Assign GCPs. |
2159 | | * |
2160 | | * This method is the same as the C function GDALSetGCPs(). |
2161 | | * |
2162 | | * This method assigns the passed set of GCPs to this dataset, as well as |
2163 | | * setting their coordinate system. Internally copies are made of the |
2164 | | * coordinate system and list of points, so the caller remains responsible for |
2165 | | * deallocating these arguments if appropriate. |
2166 | | * |
2167 | | * Most formats do not support setting of GCPs, even formats that can |
2168 | | * handle GCPs. These formats will return CE_Failure. |
2169 | | * |
2170 | | * \note Startig with GDAL 3.0, this is a compatibility layer around |
2171 | | * SetGCPs(int, const GDAL_GCP*, const char*) |
2172 | | * |
2173 | | * @param nGCPCount number of GCPs being assigned. |
2174 | | * |
2175 | | * @param pasGCPList array of GCP structures being assign (nGCPCount in array). |
2176 | | * |
2177 | | * @param pszGCPProjection the new OGC WKT coordinate system to assign for the |
2178 | | * GCP output coordinates. This parameter should be "" if no output coordinate |
2179 | | * system is known. |
2180 | | * |
2181 | | * @return CE_None on success, CE_Failure on failure (including if action is |
2182 | | * not supported for this format). |
2183 | | */ |
2184 | | |
2185 | | CPLErr GDALDataset::SetGCPs(int nGCPCount, const GDAL_GCP *pasGCPList, |
2186 | | const char *pszGCPProjection) |
2187 | | |
2188 | 0 | { |
2189 | 0 | if (pszGCPProjection && pszGCPProjection[0] != '\0') |
2190 | 0 | { |
2191 | 0 | OGRSpatialReference oSRS; |
2192 | 0 | oSRS.SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER); |
2193 | 0 | if (oSRS.importFromWkt(pszGCPProjection) != OGRERR_NONE) |
2194 | 0 | { |
2195 | 0 | return CE_Failure; |
2196 | 0 | } |
2197 | 0 | return SetGCPs(nGCPCount, pasGCPList, &oSRS); |
2198 | 0 | } |
2199 | 0 | else |
2200 | 0 | { |
2201 | 0 | return SetGCPs(nGCPCount, pasGCPList, |
2202 | 0 | static_cast<const OGRSpatialReference *>(nullptr)); |
2203 | 0 | } |
2204 | 0 | } |
2205 | | |
2206 | | /************************************************************************/ |
2207 | | /* SetGCPs() */ |
2208 | | /************************************************************************/ |
2209 | | |
2210 | | /** |
2211 | | * \brief Assign GCPs. |
2212 | | * |
2213 | | * This method is the same as the C function GDALSetGCPs(). |
2214 | | * |
2215 | | * This method assigns the passed set of GCPs to this dataset, as well as |
2216 | | * setting their coordinate system. Internally copies are made of the |
2217 | | * coordinate system and list of points, so the caller remains responsible for |
2218 | | * deallocating these arguments if appropriate. |
2219 | | * |
2220 | | * Most formats do not support setting of GCPs, even formats that can |
2221 | | * handle GCPs. These formats will return CE_Failure. |
2222 | | * |
2223 | | * @since GDAL 3.0 |
2224 | | * |
2225 | | * @param nGCPCount number of GCPs being assigned. |
2226 | | * |
2227 | | * @param pasGCPList array of GCP structures being assign (nGCPCount in array). |
2228 | | * |
2229 | | * @param poGCP_SRS the new coordinate reference system to assign for the |
2230 | | * GCP output coordinates. This parameter should be null if no output |
2231 | | * coordinate system is known. |
2232 | | * |
2233 | | * @return CE_None on success, CE_Failure on failure (including if action is |
2234 | | * not supported for this format). |
2235 | | */ |
2236 | | |
2237 | | CPLErr GDALDataset::SetGCPs(CPL_UNUSED int nGCPCount, |
2238 | | CPL_UNUSED const GDAL_GCP *pasGCPList, |
2239 | | CPL_UNUSED const OGRSpatialReference *poGCP_SRS) |
2240 | | |
2241 | 0 | { |
2242 | 0 | if (!(GetMOFlags() & GMO_IGNORE_UNIMPLEMENTED)) |
2243 | 0 | ReportError(CE_Failure, CPLE_NotSupported, |
2244 | 0 | "Dataset does not support the SetGCPs() method."); |
2245 | |
|
2246 | 0 | return CE_Failure; |
2247 | 0 | } |
2248 | | |
2249 | | /************************************************************************/ |
2250 | | /* GDALSetGCPs() */ |
2251 | | /************************************************************************/ |
2252 | | |
2253 | | /** |
2254 | | * \brief Assign GCPs. |
2255 | | * |
2256 | | * @see GDALDataset::SetGCPs(int, const GDAL_GCP*, const char*) |
2257 | | */ |
2258 | | |
2259 | | CPLErr CPL_STDCALL GDALSetGCPs(GDALDatasetH hDS, int nGCPCount, |
2260 | | const GDAL_GCP *pasGCPList, |
2261 | | const char *pszGCPProjection) |
2262 | | |
2263 | 0 | { |
2264 | 0 | VALIDATE_POINTER1(hDS, "GDALSetGCPs", CE_Failure); |
2265 | | |
2266 | 0 | return GDALDataset::FromHandle(hDS)->SetGCPs(nGCPCount, pasGCPList, |
2267 | 0 | pszGCPProjection); |
2268 | 0 | } |
2269 | | |
2270 | | /************************************************************************/ |
2271 | | /* GDALSetGCPs2() */ |
2272 | | /************************************************************************/ |
2273 | | |
2274 | | /** |
2275 | | * \brief Assign GCPs. |
2276 | | * |
2277 | | * @since GDAL 3.0 |
2278 | | * @see GDALDataset::SetGCPs(int, const GDAL_GCP*, const OGRSpatialReference*) |
2279 | | */ |
2280 | | |
2281 | | CPLErr GDALSetGCPs2(GDALDatasetH hDS, int nGCPCount, const GDAL_GCP *pasGCPList, |
2282 | | OGRSpatialReferenceH hSRS) |
2283 | | |
2284 | 0 | { |
2285 | 0 | VALIDATE_POINTER1(hDS, "GDALSetGCPs2", CE_Failure); |
2286 | | |
2287 | 0 | return GDALDataset::FromHandle(hDS)->SetGCPs( |
2288 | 0 | nGCPCount, pasGCPList, OGRSpatialReference::FromHandle(hSRS)); |
2289 | 0 | } |
2290 | | |
2291 | | /************************************************************************/ |
2292 | | /* BuildOverviews() */ |
2293 | | /************************************************************************/ |
2294 | | |
2295 | | /** |
2296 | | * \brief Build raster overview(s) |
2297 | | * |
2298 | | * If the operation is not supported for the indicated dataset, then |
2299 | | * CE_Failure is returned, and CPLGetLastErrorNo() will return |
2300 | | * CPLE_NotSupported. |
2301 | | * |
2302 | | * Depending on the actual file format, all overviews level can be also |
2303 | | * deleted by specifying nOverviews == 0. This works at least for external |
2304 | | * overviews (.ovr), TIFF internal overviews, etc. |
2305 | | * |
2306 | | * Starting with GDAL 3.2, the GDAL_NUM_THREADS configuration option can be set |
2307 | | * to "ALL_CPUS" or a integer value to specify the number of threads to use for |
2308 | | * overview computation. |
2309 | | * |
2310 | | * This method is the same as the C function GDALBuildOverviewsEx(). |
2311 | | * |
2312 | | * @param pszResampling one of "AVERAGE", "AVERAGE_MAGPHASE", "RMS", |
2313 | | * "BILINEAR", "CUBIC", "CUBICSPLINE", "GAUSS", "LANCZOS", "MODE", "NEAREST", |
2314 | | * or "NONE" controlling the downsampling method applied. |
2315 | | * @param nOverviews number of overviews to build, or 0 to clean overviews. |
2316 | | * @param panOverviewList the list of overview decimation factors (positive |
2317 | | * integers, normally larger or equal to 2) to build, or |
2318 | | * NULL if nOverviews == 0. |
2319 | | * @param nListBands number of bands to build overviews for in panBandList. |
2320 | | * Build for all bands if this is 0. |
2321 | | * @param panBandList list of band numbers. |
2322 | | * @param pfnProgress a function to call to report progress, or NULL. |
2323 | | * @param pProgressData application data to pass to the progress function. |
2324 | | * @param papszOptions (GDAL >= 3.6) NULL terminated list of options as |
2325 | | * key=value pairs, or NULL. |
2326 | | * Possible keys are the ones returned by |
2327 | | * GetDriver()->GetMetadataItem(GDAL_DMD_OVERVIEW_CREATIONOPTIONLIST) |
2328 | | * |
2329 | | * @return CE_None on success or CE_Failure if the operation doesn't work. |
2330 | | * |
2331 | | * For example, to build overview level 2, 4 and 8 on all bands the following |
2332 | | * call could be made: |
2333 | | * \code{.cpp} |
2334 | | * int anOverviewList[3] = { 2, 4, 8 }; |
2335 | | * |
2336 | | * poDataset->BuildOverviews( "NEAREST", 3, anOverviewList, 0, nullptr, |
2337 | | * GDALDummyProgress, nullptr ); |
2338 | | * \endcode |
2339 | | * |
2340 | | * @see GDALRegenerateOverviewsEx() |
2341 | | */ |
2342 | | |
2343 | | CPLErr GDALDataset::BuildOverviews(const char *pszResampling, int nOverviews, |
2344 | | const int *panOverviewList, int nListBands, |
2345 | | const int *panBandList, |
2346 | | GDALProgressFunc pfnProgress, |
2347 | | void *pProgressData, |
2348 | | CSLConstList papszOptions) |
2349 | 0 | { |
2350 | 0 | int *panAllBandList = nullptr; |
2351 | |
|
2352 | 0 | CPLStringList aosOptions(papszOptions); |
2353 | 0 | if (poDriver && !aosOptions.empty()) |
2354 | 0 | { |
2355 | 0 | const char *pszOptionList = |
2356 | 0 | poDriver->GetMetadataItem(GDAL_DMD_OVERVIEW_CREATIONOPTIONLIST); |
2357 | 0 | if (pszOptionList) |
2358 | 0 | { |
2359 | | // For backwards compatibility |
2360 | 0 | if (const char *opt = aosOptions.FetchNameValue("USE_RRD")) |
2361 | 0 | { |
2362 | 0 | if (strstr(pszOptionList, "<Value>RRD</Value>") && |
2363 | 0 | aosOptions.FetchNameValue("LOCATION") == nullptr) |
2364 | 0 | { |
2365 | 0 | if (CPLTestBool(opt)) |
2366 | 0 | aosOptions.SetNameValue("LOCATION", "RRD"); |
2367 | 0 | aosOptions.SetNameValue("USE_RRD", nullptr); |
2368 | 0 | } |
2369 | 0 | } |
2370 | 0 | if (const char *opt = |
2371 | 0 | aosOptions.FetchNameValue("VRT_VIRTUAL_OVERVIEWS")) |
2372 | 0 | { |
2373 | 0 | if (strstr(pszOptionList, "VIRTUAL")) |
2374 | 0 | { |
2375 | 0 | aosOptions.SetNameValue("VIRTUAL", opt); |
2376 | 0 | aosOptions.SetNameValue("VRT_VIRTUAL_OVERVIEWS", nullptr); |
2377 | 0 | } |
2378 | 0 | } |
2379 | |
|
2380 | 0 | for (const auto &[pszKey, pszValue] : |
2381 | 0 | cpl::IterateNameValue(papszOptions)) |
2382 | 0 | { |
2383 | 0 | if (cpl::ends_with(std::string_view(pszKey), "_OVERVIEW")) |
2384 | 0 | { |
2385 | 0 | aosOptions.SetNameValue( |
2386 | 0 | std::string(pszKey) |
2387 | 0 | .substr(0, strlen(pszKey) - strlen("_OVERVIEW")) |
2388 | 0 | .c_str(), |
2389 | 0 | pszValue); |
2390 | 0 | aosOptions.SetNameValue(pszKey, nullptr); |
2391 | 0 | } |
2392 | 0 | } |
2393 | |
|
2394 | 0 | CPLString osDriver; |
2395 | 0 | osDriver.Printf("driver %s", poDriver->GetDescription()); |
2396 | 0 | GDALValidateOptions(pszOptionList, aosOptions.List(), |
2397 | 0 | "overview creation option", osDriver); |
2398 | 0 | } |
2399 | 0 | } |
2400 | |
|
2401 | 0 | if (nListBands == 0) |
2402 | 0 | { |
2403 | 0 | nListBands = GetRasterCount(); |
2404 | 0 | panAllBandList = |
2405 | 0 | static_cast<int *>(CPLMalloc(sizeof(int) * nListBands)); |
2406 | 0 | for (int i = 0; i < nListBands; ++i) |
2407 | 0 | panAllBandList[i] = i + 1; |
2408 | |
|
2409 | 0 | panBandList = panAllBandList; |
2410 | 0 | } |
2411 | |
|
2412 | 0 | if (pfnProgress == nullptr) |
2413 | 0 | pfnProgress = GDALDummyProgress; |
2414 | |
|
2415 | 0 | for (int i = 0; i < nOverviews; ++i) |
2416 | 0 | { |
2417 | 0 | if (panOverviewList[i] <= 0) |
2418 | 0 | { |
2419 | 0 | CPLError(CE_Failure, CPLE_IllegalArg, |
2420 | 0 | "panOverviewList[%d] = %d is invalid. It must be a " |
2421 | 0 | "positive value", |
2422 | 0 | i, panOverviewList[i]); |
2423 | 0 | CPLFree(panAllBandList); |
2424 | 0 | return CE_Failure; |
2425 | 0 | } |
2426 | 0 | } |
2427 | | |
2428 | 0 | const CPLErr eErr = IBuildOverviews( |
2429 | 0 | pszResampling, nOverviews, panOverviewList, nListBands, panBandList, |
2430 | 0 | pfnProgress, pProgressData, aosOptions.List()); |
2431 | |
|
2432 | 0 | if (panAllBandList != nullptr) |
2433 | 0 | CPLFree(panAllBandList); |
2434 | |
|
2435 | 0 | return eErr; |
2436 | 0 | } |
2437 | | |
2438 | | /************************************************************************/ |
2439 | | /* GDALBuildOverviews() */ |
2440 | | /************************************************************************/ |
2441 | | |
2442 | | /** |
2443 | | * \brief Build raster overview(s) |
2444 | | * |
2445 | | * @see GDALDataset::BuildOverviews() and GDALBuildOverviews() |
2446 | | */ |
2447 | | |
2448 | | CPLErr CPL_STDCALL GDALBuildOverviews(GDALDatasetH hDataset, |
2449 | | const char *pszResampling, int nOverviews, |
2450 | | const int *panOverviewList, |
2451 | | int nListBands, const int *panBandList, |
2452 | | GDALProgressFunc pfnProgress, |
2453 | | void *pProgressData) |
2454 | | |
2455 | 0 | { |
2456 | 0 | VALIDATE_POINTER1(hDataset, "GDALBuildOverviews", CE_Failure); |
2457 | | |
2458 | 0 | return GDALDataset::FromHandle(hDataset)->BuildOverviews( |
2459 | 0 | pszResampling, nOverviews, panOverviewList, nListBands, panBandList, |
2460 | 0 | pfnProgress, pProgressData, nullptr); |
2461 | 0 | } |
2462 | | |
2463 | | /************************************************************************/ |
2464 | | /* GDALBuildOverviews() */ |
2465 | | /************************************************************************/ |
2466 | | |
2467 | | /** |
2468 | | * \brief Build raster overview(s) |
2469 | | * |
2470 | | * @see GDALDataset::BuildOverviews() |
2471 | | * @since GDAL 3.6 |
2472 | | */ |
2473 | | |
2474 | | CPLErr CPL_STDCALL |
2475 | | GDALBuildOverviewsEx(GDALDatasetH hDataset, const char *pszResampling, |
2476 | | int nOverviews, const int *panOverviewList, int nListBands, |
2477 | | const int *panBandList, GDALProgressFunc pfnProgress, |
2478 | | void *pProgressData, CSLConstList papszOptions) |
2479 | | |
2480 | 0 | { |
2481 | 0 | VALIDATE_POINTER1(hDataset, "GDALBuildOverviews", CE_Failure); |
2482 | | |
2483 | 0 | return GDALDataset::FromHandle(hDataset)->BuildOverviews( |
2484 | 0 | pszResampling, nOverviews, panOverviewList, nListBands, panBandList, |
2485 | 0 | pfnProgress, pProgressData, papszOptions); |
2486 | 0 | } |
2487 | | |
2488 | | /************************************************************************/ |
2489 | | /* IBuildOverviews() */ |
2490 | | /* */ |
2491 | | /* Default implementation. */ |
2492 | | /************************************************************************/ |
2493 | | |
2494 | | //! @cond Doxygen_Suppress |
2495 | | CPLErr GDALDataset::IBuildOverviews(const char *pszResampling, int nOverviews, |
2496 | | const int *panOverviewList, int nListBands, |
2497 | | const int *panBandList, |
2498 | | GDALProgressFunc pfnProgress, |
2499 | | void *pProgressData, |
2500 | | CSLConstList papszOptions) |
2501 | | |
2502 | 0 | { |
2503 | 0 | if (oOvManager.IsInitialized()) |
2504 | 0 | return oOvManager.BuildOverviews( |
2505 | 0 | nullptr, pszResampling, nOverviews, panOverviewList, nListBands, |
2506 | 0 | panBandList, pfnProgress, pProgressData, papszOptions); |
2507 | 0 | else |
2508 | 0 | { |
2509 | 0 | ReportError(CE_Failure, CPLE_NotSupported, |
2510 | 0 | "BuildOverviews() not supported for this dataset."); |
2511 | |
|
2512 | 0 | return CE_Failure; |
2513 | 0 | } |
2514 | 0 | } |
2515 | | |
2516 | | //! @endcond |
2517 | | |
2518 | | /************************************************************************/ |
2519 | | /* AddOverviews() */ |
2520 | | /* */ |
2521 | | /* Default implementation. */ |
2522 | | /************************************************************************/ |
2523 | | |
2524 | | /** |
2525 | | * \brief Add overview from existing dataset(s) |
2526 | | * |
2527 | | * This function creates new overview levels or refresh existing one from |
2528 | | * the list of provided overview datasets. |
2529 | | * Source overviews may come from any GDAL supported format, provided they |
2530 | | * have the same number of bands and geospatial extent than the target |
2531 | | * dataset. |
2532 | | * |
2533 | | * If the operation is not supported for the indicated dataset, then |
2534 | | * CE_Failure is returned, and CPLGetLastErrorNo() will return |
2535 | | * CPLE_NotSupported. |
2536 | | * |
2537 | | * At time of writing, this method is only implemented for internal overviews |
2538 | | * of GeoTIFF datasets and external overviews in GeoTIFF format. |
2539 | | * |
2540 | | * @param apoSrcOvrDS Vector of source overviews. |
2541 | | * @param pfnProgress a function to call to report progress, or NULL. |
2542 | | * @param pProgressData application data to pass to the progress function. |
2543 | | * @param papszOptions NULL terminated list of options as |
2544 | | * key=value pairs, or NULL. Possible keys are the |
2545 | | * ones returned by |
2546 | | * GetDriver()->GetMetadataItem(GDAL_DMD_OVERVIEW_CREATIONOPTIONLIST) |
2547 | | * |
2548 | | * @return CE_None on success or CE_Failure if the operation doesn't work. |
2549 | | * @since 3.12 |
2550 | | */ |
2551 | | CPLErr GDALDataset::AddOverviews(const std::vector<GDALDataset *> &apoSrcOvrDS, |
2552 | | GDALProgressFunc pfnProgress, |
2553 | | void *pProgressData, CSLConstList papszOptions) |
2554 | 0 | { |
2555 | 0 | if (oOvManager.IsInitialized()) |
2556 | 0 | { |
2557 | 0 | return oOvManager.AddOverviews(nullptr, apoSrcOvrDS, pfnProgress, |
2558 | 0 | pProgressData, papszOptions); |
2559 | 0 | } |
2560 | 0 | else |
2561 | 0 | { |
2562 | 0 | ReportError(CE_Failure, CPLE_NotSupported, |
2563 | 0 | "AddOverviews() not supported for this dataset."); |
2564 | 0 | return CE_Failure; |
2565 | 0 | } |
2566 | 0 | } |
2567 | | |
2568 | | /************************************************************************/ |
2569 | | /* IRasterIO() */ |
2570 | | /* */ |
2571 | | /* The default implementation of IRasterIO() is, in the general */ |
2572 | | /* case to pass the request off to each band objects rasterio */ |
2573 | | /* methods with appropriate arguments. In some cases, it might */ |
2574 | | /* choose instead the BlockBasedRasterIO() implementation. */ |
2575 | | /************************************************************************/ |
2576 | | |
2577 | | //! @cond Doxygen_Suppress |
2578 | | CPLErr GDALDataset::IRasterIO(GDALRWFlag eRWFlag, int nXOff, int nYOff, |
2579 | | int nXSize, int nYSize, void *pData, |
2580 | | int nBufXSize, int nBufYSize, |
2581 | | GDALDataType eBufType, int nBandCount, |
2582 | | BANDMAP_TYPE panBandMap, GSpacing nPixelSpace, |
2583 | | GSpacing nLineSpace, GSpacing nBandSpace, |
2584 | | GDALRasterIOExtraArg *psExtraArg) |
2585 | | |
2586 | 0 | { |
2587 | 0 | const char *pszInterleave = nullptr; |
2588 | |
|
2589 | 0 | CPLAssert(nullptr != pData); |
2590 | | |
2591 | 0 | const bool bHasSubpixelShift = |
2592 | 0 | psExtraArg->bFloatingPointWindowValidity && |
2593 | 0 | psExtraArg->eResampleAlg != GRIORA_NearestNeighbour && |
2594 | 0 | (nXOff != psExtraArg->dfXOff || nYOff != psExtraArg->dfYOff); |
2595 | |
|
2596 | 0 | if (!bHasSubpixelShift && nXSize == nBufXSize && nYSize == nBufYSize && |
2597 | 0 | nBandCount > 1 && |
2598 | 0 | (pszInterleave = GetMetadataItem("INTERLEAVE", "IMAGE_STRUCTURE")) != |
2599 | 0 | nullptr && |
2600 | 0 | EQUAL(pszInterleave, "PIXEL")) |
2601 | 0 | { |
2602 | 0 | return BlockBasedRasterIO(eRWFlag, nXOff, nYOff, nXSize, nYSize, pData, |
2603 | 0 | nBufXSize, nBufYSize, eBufType, nBandCount, |
2604 | 0 | panBandMap, nPixelSpace, nLineSpace, |
2605 | 0 | nBandSpace, psExtraArg); |
2606 | 0 | } |
2607 | | |
2608 | 0 | if (eRWFlag == GF_Read && |
2609 | 0 | (psExtraArg->eResampleAlg == GRIORA_Cubic || |
2610 | 0 | psExtraArg->eResampleAlg == GRIORA_CubicSpline || |
2611 | 0 | psExtraArg->eResampleAlg == GRIORA_Bilinear || |
2612 | 0 | psExtraArg->eResampleAlg == GRIORA_Lanczos) && |
2613 | 0 | !(nXSize == nBufXSize && nYSize == nBufYSize) && nBandCount > 1) |
2614 | 0 | { |
2615 | 0 | if (nBufXSize < nXSize && nBufYSize < nYSize && AreOverviewsEnabled()) |
2616 | 0 | { |
2617 | 0 | int bTried = FALSE; |
2618 | 0 | const CPLErr eErr = TryOverviewRasterIO( |
2619 | 0 | eRWFlag, nXOff, nYOff, nXSize, nYSize, pData, nBufXSize, |
2620 | 0 | nBufYSize, eBufType, nBandCount, panBandMap, nPixelSpace, |
2621 | 0 | nLineSpace, nBandSpace, psExtraArg, &bTried); |
2622 | 0 | if (bTried) |
2623 | 0 | return eErr; |
2624 | 0 | } |
2625 | | |
2626 | 0 | GDALDataType eFirstBandDT = GDT_Unknown; |
2627 | 0 | int nFirstMaskFlags = 0; |
2628 | 0 | GDALRasterBand *poFirstMaskBand = nullptr; |
2629 | 0 | int nOKBands = 0; |
2630 | | |
2631 | | // Check if bands share the same mask band |
2632 | 0 | for (int i = 0; i < nBandCount; ++i) |
2633 | 0 | { |
2634 | 0 | GDALRasterBand *poBand = GetRasterBand(panBandMap[i]); |
2635 | 0 | if ((nBufXSize < nXSize || nBufYSize < nYSize) && |
2636 | 0 | poBand->GetOverviewCount()) |
2637 | 0 | { |
2638 | | // Could be improved to select the appropriate overview. |
2639 | 0 | break; |
2640 | 0 | } |
2641 | 0 | if (poBand->GetColorTable() != nullptr) |
2642 | 0 | { |
2643 | 0 | break; |
2644 | 0 | } |
2645 | 0 | const GDALDataType eDT = poBand->GetRasterDataType(); |
2646 | 0 | if (GDALDataTypeIsComplex(eDT)) |
2647 | 0 | { |
2648 | 0 | break; |
2649 | 0 | } |
2650 | 0 | if (i == 0) |
2651 | 0 | { |
2652 | 0 | eFirstBandDT = eDT; |
2653 | 0 | nFirstMaskFlags = poBand->GetMaskFlags(); |
2654 | 0 | if (nFirstMaskFlags == GMF_NODATA) |
2655 | 0 | { |
2656 | | // The dataset-level resampling code is not ready for nodata |
2657 | | // Fallback to band-level resampling |
2658 | 0 | break; |
2659 | 0 | } |
2660 | 0 | poFirstMaskBand = poBand->GetMaskBand(); |
2661 | 0 | } |
2662 | 0 | else |
2663 | 0 | { |
2664 | 0 | if (eDT != eFirstBandDT) |
2665 | 0 | { |
2666 | 0 | break; |
2667 | 0 | } |
2668 | 0 | int nMaskFlags = poBand->GetMaskFlags(); |
2669 | 0 | if (nMaskFlags == GMF_NODATA) |
2670 | 0 | { |
2671 | | // The dataset-level resampling code is not ready for nodata |
2672 | | // Fallback to band-level resampling |
2673 | 0 | break; |
2674 | 0 | } |
2675 | 0 | GDALRasterBand *poMaskBand = poBand->GetMaskBand(); |
2676 | 0 | if (nFirstMaskFlags == GMF_ALL_VALID && |
2677 | 0 | nMaskFlags == GMF_ALL_VALID) |
2678 | 0 | { |
2679 | | // Ok. |
2680 | 0 | } |
2681 | 0 | else if (poFirstMaskBand == poMaskBand) |
2682 | 0 | { |
2683 | | // Ok. |
2684 | 0 | } |
2685 | 0 | else |
2686 | 0 | { |
2687 | 0 | break; |
2688 | 0 | } |
2689 | 0 | } |
2690 | | |
2691 | 0 | ++nOKBands; |
2692 | 0 | } |
2693 | |
|
2694 | 0 | GDALProgressFunc pfnProgressGlobal = psExtraArg->pfnProgress; |
2695 | 0 | void *pProgressDataGlobal = psExtraArg->pProgressData; |
2696 | |
|
2697 | 0 | CPLErr eErr = CE_None; |
2698 | 0 | if (nOKBands > 0) |
2699 | 0 | { |
2700 | 0 | if (nOKBands < nBandCount) |
2701 | 0 | { |
2702 | 0 | psExtraArg->pfnProgress = GDALScaledProgress; |
2703 | 0 | psExtraArg->pProgressData = GDALCreateScaledProgress( |
2704 | 0 | 0.0, static_cast<double>(nOKBands) / nBandCount, |
2705 | 0 | pfnProgressGlobal, pProgressDataGlobal); |
2706 | 0 | if (psExtraArg->pProgressData == nullptr) |
2707 | 0 | psExtraArg->pfnProgress = nullptr; |
2708 | 0 | } |
2709 | |
|
2710 | 0 | eErr = RasterIOResampled(eRWFlag, nXOff, nYOff, nXSize, nYSize, |
2711 | 0 | pData, nBufXSize, nBufYSize, eBufType, |
2712 | 0 | nOKBands, panBandMap, nPixelSpace, |
2713 | 0 | nLineSpace, nBandSpace, psExtraArg); |
2714 | |
|
2715 | 0 | if (nOKBands < nBandCount) |
2716 | 0 | { |
2717 | 0 | GDALDestroyScaledProgress(psExtraArg->pProgressData); |
2718 | 0 | } |
2719 | 0 | } |
2720 | 0 | if (eErr == CE_None && nOKBands < nBandCount) |
2721 | 0 | { |
2722 | 0 | if (nOKBands > 0) |
2723 | 0 | { |
2724 | 0 | psExtraArg->pfnProgress = GDALScaledProgress; |
2725 | 0 | psExtraArg->pProgressData = GDALCreateScaledProgress( |
2726 | 0 | static_cast<double>(nOKBands) / nBandCount, 1.0, |
2727 | 0 | pfnProgressGlobal, pProgressDataGlobal); |
2728 | 0 | if (psExtraArg->pProgressData == nullptr) |
2729 | 0 | psExtraArg->pfnProgress = nullptr; |
2730 | 0 | } |
2731 | 0 | eErr = BandBasedRasterIO( |
2732 | 0 | eRWFlag, nXOff, nYOff, nXSize, nYSize, |
2733 | 0 | static_cast<GByte *>(pData) + nBandSpace * nOKBands, nBufXSize, |
2734 | 0 | nBufYSize, eBufType, nBandCount - nOKBands, |
2735 | 0 | panBandMap + nOKBands, nPixelSpace, nLineSpace, nBandSpace, |
2736 | 0 | psExtraArg); |
2737 | 0 | if (nOKBands > 0) |
2738 | 0 | { |
2739 | 0 | GDALDestroyScaledProgress(psExtraArg->pProgressData); |
2740 | 0 | } |
2741 | 0 | } |
2742 | |
|
2743 | 0 | psExtraArg->pfnProgress = pfnProgressGlobal; |
2744 | 0 | psExtraArg->pProgressData = pProgressDataGlobal; |
2745 | |
|
2746 | 0 | return eErr; |
2747 | 0 | } |
2748 | | |
2749 | 0 | return BandBasedRasterIO(eRWFlag, nXOff, nYOff, nXSize, nYSize, pData, |
2750 | 0 | nBufXSize, nBufYSize, eBufType, nBandCount, |
2751 | 0 | panBandMap, nPixelSpace, nLineSpace, nBandSpace, |
2752 | 0 | psExtraArg); |
2753 | 0 | } |
2754 | | |
2755 | | //! @endcond |
2756 | | |
2757 | | /************************************************************************/ |
2758 | | /* BandBasedRasterIO() */ |
2759 | | /* */ |
2760 | | /* Pass the request off to each band objects rasterio methods with */ |
2761 | | /* appropriate arguments. */ |
2762 | | /************************************************************************/ |
2763 | | |
2764 | | //! @cond Doxygen_Suppress |
2765 | | CPLErr GDALDataset::BandBasedRasterIO( |
2766 | | GDALRWFlag eRWFlag, int nXOff, int nYOff, int nXSize, int nYSize, |
2767 | | void *pData, int nBufXSize, int nBufYSize, GDALDataType eBufType, |
2768 | | int nBandCount, const int *panBandMap, GSpacing nPixelSpace, |
2769 | | GSpacing nLineSpace, GSpacing nBandSpace, GDALRasterIOExtraArg *psExtraArg) |
2770 | | |
2771 | 0 | { |
2772 | 0 | int iBandIndex; |
2773 | 0 | CPLErr eErr = CE_None; |
2774 | |
|
2775 | 0 | GDALProgressFunc pfnProgressGlobal = psExtraArg->pfnProgress; |
2776 | 0 | void *pProgressDataGlobal = psExtraArg->pProgressData; |
2777 | |
|
2778 | 0 | for (iBandIndex = 0; iBandIndex < nBandCount && eErr == CE_None; |
2779 | 0 | ++iBandIndex) |
2780 | 0 | { |
2781 | 0 | GDALRasterBand *poBand = GetRasterBand(panBandMap[iBandIndex]); |
2782 | |
|
2783 | 0 | if (poBand == nullptr) |
2784 | 0 | { |
2785 | 0 | eErr = CE_Failure; |
2786 | 0 | break; |
2787 | 0 | } |
2788 | | |
2789 | 0 | GByte *pabyBandData = |
2790 | 0 | static_cast<GByte *>(pData) + iBandIndex * nBandSpace; |
2791 | |
|
2792 | 0 | if (nBandCount > 1) |
2793 | 0 | { |
2794 | 0 | psExtraArg->pfnProgress = GDALScaledProgress; |
2795 | 0 | psExtraArg->pProgressData = GDALCreateScaledProgress( |
2796 | 0 | 1.0 * iBandIndex / nBandCount, |
2797 | 0 | 1.0 * (iBandIndex + 1) / nBandCount, pfnProgressGlobal, |
2798 | 0 | pProgressDataGlobal); |
2799 | 0 | if (psExtraArg->pProgressData == nullptr) |
2800 | 0 | psExtraArg->pfnProgress = nullptr; |
2801 | 0 | } |
2802 | |
|
2803 | 0 | eErr = poBand->IRasterIO(eRWFlag, nXOff, nYOff, nXSize, nYSize, |
2804 | 0 | pabyBandData, nBufXSize, nBufYSize, eBufType, |
2805 | 0 | nPixelSpace, nLineSpace, psExtraArg); |
2806 | |
|
2807 | 0 | if (nBandCount > 1) |
2808 | 0 | GDALDestroyScaledProgress(psExtraArg->pProgressData); |
2809 | 0 | } |
2810 | |
|
2811 | 0 | psExtraArg->pfnProgress = pfnProgressGlobal; |
2812 | 0 | psExtraArg->pProgressData = pProgressDataGlobal; |
2813 | |
|
2814 | 0 | return eErr; |
2815 | 0 | } |
2816 | | |
2817 | | //! @endcond |
2818 | | |
2819 | | /************************************************************************/ |
2820 | | /* ValidateRasterIOOrAdviseReadParameters() */ |
2821 | | /************************************************************************/ |
2822 | | |
2823 | | //! @cond Doxygen_Suppress |
2824 | | CPLErr GDALDataset::ValidateRasterIOOrAdviseReadParameters( |
2825 | | const char *pszCallingFunc, int *pbStopProcessingOnCENone, int nXOff, |
2826 | | int nYOff, int nXSize, int nYSize, int nBufXSize, int nBufYSize, |
2827 | | int nBandCount, const int *panBandMap) |
2828 | 0 | { |
2829 | | |
2830 | | /* -------------------------------------------------------------------- */ |
2831 | | /* Some size values are "noop". Lets just return to avoid */ |
2832 | | /* stressing lower level functions. */ |
2833 | | /* -------------------------------------------------------------------- */ |
2834 | 0 | if (nXSize < 1 || nYSize < 1 || nBufXSize < 1 || nBufYSize < 1) |
2835 | 0 | { |
2836 | 0 | CPLDebug("GDAL", |
2837 | 0 | "%s skipped for odd window or buffer size.\n" |
2838 | 0 | " Window = (%d,%d)x%dx%d\n" |
2839 | 0 | " Buffer = %dx%d", |
2840 | 0 | pszCallingFunc, nXOff, nYOff, nXSize, nYSize, nBufXSize, |
2841 | 0 | nBufYSize); |
2842 | |
|
2843 | 0 | *pbStopProcessingOnCENone = TRUE; |
2844 | 0 | return CE_None; |
2845 | 0 | } |
2846 | | |
2847 | 0 | CPLErr eErr = CE_None; |
2848 | 0 | *pbStopProcessingOnCENone = FALSE; |
2849 | |
|
2850 | 0 | if (nXOff < 0 || nXOff > INT_MAX - nXSize || |
2851 | 0 | nXOff + nXSize > nRasterXSize || nYOff < 0 || |
2852 | 0 | nYOff > INT_MAX - nYSize || nYOff + nYSize > nRasterYSize) |
2853 | 0 | { |
2854 | 0 | ReportError(CE_Failure, CPLE_IllegalArg, |
2855 | 0 | "Access window out of range in %s. Requested " |
2856 | 0 | "(%d,%d) of size %dx%d on raster of %dx%d.", |
2857 | 0 | pszCallingFunc, nXOff, nYOff, nXSize, nYSize, nRasterXSize, |
2858 | 0 | nRasterYSize); |
2859 | 0 | eErr = CE_Failure; |
2860 | 0 | } |
2861 | |
|
2862 | 0 | if (panBandMap == nullptr && nBandCount > GetRasterCount()) |
2863 | 0 | { |
2864 | 0 | ReportError(CE_Failure, CPLE_IllegalArg, |
2865 | 0 | "%s: nBandCount cannot be greater than %d", pszCallingFunc, |
2866 | 0 | GetRasterCount()); |
2867 | 0 | eErr = CE_Failure; |
2868 | 0 | } |
2869 | |
|
2870 | 0 | for (int i = 0; i < nBandCount && eErr == CE_None; ++i) |
2871 | 0 | { |
2872 | 0 | int iBand = (panBandMap != nullptr) ? panBandMap[i] : i + 1; |
2873 | 0 | if (iBand < 1 || iBand > GetRasterCount()) |
2874 | 0 | { |
2875 | 0 | ReportError( |
2876 | 0 | CE_Failure, CPLE_IllegalArg, |
2877 | 0 | "%s: panBandMap[%d] = %d, this band does not exist on dataset.", |
2878 | 0 | pszCallingFunc, i, iBand); |
2879 | 0 | eErr = CE_Failure; |
2880 | 0 | } |
2881 | |
|
2882 | 0 | if (eErr == CE_None && GetRasterBand(iBand) == nullptr) |
2883 | 0 | { |
2884 | 0 | ReportError( |
2885 | 0 | CE_Failure, CPLE_IllegalArg, |
2886 | 0 | "%s: panBandMap[%d]=%d, this band should exist but is NULL!", |
2887 | 0 | pszCallingFunc, i, iBand); |
2888 | 0 | eErr = CE_Failure; |
2889 | 0 | } |
2890 | 0 | } |
2891 | |
|
2892 | 0 | return eErr; |
2893 | 0 | } |
2894 | | |
2895 | | //! @endcond |
2896 | | |
2897 | | /************************************************************************/ |
2898 | | /* RasterIO() */ |
2899 | | /************************************************************************/ |
2900 | | |
2901 | | /** |
2902 | | * \brief Read/write a region of image data from multiple bands. |
2903 | | * |
2904 | | * This method allows reading a region of one or more GDALRasterBands from |
2905 | | * this dataset into a buffer, or writing data from a buffer into a region |
2906 | | * of the GDALRasterBands. It automatically takes care of data type |
2907 | | * translation if the data type (eBufType) of the buffer is different than |
2908 | | * that of the GDALRasterBand. |
2909 | | * The method also takes care of image decimation / replication if the |
2910 | | * buffer size (nBufXSize x nBufYSize) is different than the size of the |
2911 | | * region being accessed (nXSize x nYSize). |
2912 | | * |
2913 | | * The window of interest expressed by (nXOff, nYOff, nXSize, nYSize) should be |
2914 | | * fully within the raster space, that is nXOff >= 0, nYOff >= 0, |
2915 | | * nXOff + nXSize <= GetRasterXSize() and nYOff + nYSize <= GetRasterYSize(). |
2916 | | * If reads larger than the raster space are wished, GDALTranslate() might be used. |
2917 | | * Or use nLineSpace and a possibly shifted pData value. |
2918 | | * |
2919 | | * The nPixelSpace, nLineSpace and nBandSpace parameters allow reading into or |
2920 | | * writing from various organization of buffers. |
2921 | | * |
2922 | | * Some formats may efficiently implement decimation into a buffer by |
2923 | | * reading from lower resolution overview images. The logic of the default |
2924 | | * implementation in the base class GDALRasterBand is the following one. It |
2925 | | * computes a target_downscaling_factor from the window of interest and buffer |
2926 | | * size which is min(nXSize/nBufXSize, nYSize/nBufYSize). |
2927 | | * It then walks through overviews and will select the first one whose |
2928 | | * downscaling factor is greater than target_downscaling_factor / 1.2. |
2929 | | * |
2930 | | * Let's assume we have overviews at downscaling factors 2, 4 and 8. |
2931 | | * The relationship between target_downscaling_factor and the select overview |
2932 | | * level is the following one: |
2933 | | * |
2934 | | * target_downscaling_factor | selected_overview |
2935 | | * ------------------------- | ----------------- |
2936 | | * ]0, 2 / 1.2] | full resolution band |
2937 | | * ]2 / 1.2, 4 / 1.2] | 2x downsampled band |
2938 | | * ]4 / 1.2, 8 / 1.2] | 4x downsampled band |
2939 | | * ]8 / 1.2, infinity[ | 8x downsampled band |
2940 | | * |
2941 | | * Note that starting with GDAL 3.9, this 1.2 oversampling factor can be |
2942 | | * modified by setting the GDAL_OVERVIEW_OVERSAMPLING_THRESHOLD configuration |
2943 | | * option. Also note that starting with GDAL 3.9, when the resampling algorithm |
2944 | | * specified in psExtraArg->eResampleAlg is different from GRIORA_NearestNeighbour, |
2945 | | * this oversampling threshold defaults to 1. Consequently if there are overviews |
2946 | | * of downscaling factor 2, 4 and 8, and the desired downscaling factor is |
2947 | | * 7.99, the overview of factor 4 will be selected for a non nearest resampling. |
2948 | | * |
2949 | | * For highest performance full resolution data access, read and write |
2950 | | * on "block boundaries" as returned by GetBlockSize(), or use the |
2951 | | * ReadBlock() and WriteBlock() methods. |
2952 | | * |
2953 | | * This method is the same as the C GDALDatasetRasterIO() or |
2954 | | * GDALDatasetRasterIOEx() functions. |
2955 | | * |
2956 | | * @param eRWFlag Either GF_Read to read a region of data, or GF_Write to |
2957 | | * write a region of data. |
2958 | | * |
2959 | | * @param nXOff The pixel offset to the top left corner of the region |
2960 | | * of the band to be accessed. This would be zero to start from the left side. |
2961 | | * |
2962 | | * @param nYOff The line offset to the top left corner of the region |
2963 | | * of the band to be accessed. This would be zero to start from the top. |
2964 | | * |
2965 | | * @param nXSize The width of the region of the band to be accessed in pixels. |
2966 | | * |
2967 | | * @param nYSize The height of the region of the band to be accessed in lines. |
2968 | | * |
2969 | | * @param pData The buffer into which the data should be read, or from which |
2970 | | * it should be written. This buffer must contain at least |
2971 | | * nBufXSize * nBufYSize * nBandCount words of type eBufType. It is organized |
2972 | | * in left to right,top to bottom pixel order. Spacing is controlled by the |
2973 | | * nPixelSpace, and nLineSpace parameters. |
2974 | | * Note that even with eRWFlag==GF_Write, the content of the buffer might be |
2975 | | * temporarily modified during the execution of this method (and eventually |
2976 | | * restored back to its original content), so it is not safe to use a buffer |
2977 | | * stored in a read-only section of the calling program. |
2978 | | * |
2979 | | * @param nBufXSize the width of the buffer image into which the desired region |
2980 | | * is to be read, or from which it is to be written. |
2981 | | * |
2982 | | * @param nBufYSize the height of the buffer image into which the desired |
2983 | | * region is to be read, or from which it is to be written. |
2984 | | * |
2985 | | * @param eBufType the type of the pixel values in the pData data buffer. The |
2986 | | * pixel values will automatically be translated to/from the GDALRasterBand |
2987 | | * data type as needed. Most driver implementations will use GDALCopyWords64() |
2988 | | * to perform data type translation. |
2989 | | * |
2990 | | * @param nBandCount the number of bands being read or written. |
2991 | | * |
2992 | | * @param panBandMap the list of nBandCount band numbers being read/written. |
2993 | | * Note band numbers are 1 based. This may be NULL to select the first |
2994 | | * nBandCount bands. (Note: before GDAL 3.10, argument type was "int*", and |
2995 | | * not "const int*") |
2996 | | * |
2997 | | * @param nPixelSpace The byte offset from the start of one pixel value in |
2998 | | * pData to the start of the next pixel value within a scanline. If defaulted |
2999 | | * (0) the size of the datatype eBufType is used. |
3000 | | * |
3001 | | * @param nLineSpace The byte offset from the start of one scanline in |
3002 | | * pData to the start of the next. If defaulted (0) the size of the datatype |
3003 | | * eBufType * nBufXSize is used. |
3004 | | * |
3005 | | * @param nBandSpace the byte offset from the start of one bands data to the |
3006 | | * start of the next. If defaulted (0) the value will be |
3007 | | * nLineSpace * nBufYSize implying band sequential organization |
3008 | | * of the data buffer. |
3009 | | * |
3010 | | * @param psExtraArg pointer to a GDALRasterIOExtraArg |
3011 | | * structure with additional arguments to specify resampling and progress |
3012 | | * callback, or NULL for default behavior. The GDAL_RASTERIO_RESAMPLING |
3013 | | * configuration option can also be defined to override the default resampling |
3014 | | * to one of BILINEAR, CUBIC, CUBICSPLINE, LANCZOS, AVERAGE or MODE. |
3015 | | * |
3016 | | * @return CE_Failure if the access fails, otherwise CE_None. |
3017 | | */ |
3018 | | |
3019 | | CPLErr GDALDataset::RasterIO(GDALRWFlag eRWFlag, int nXOff, int nYOff, |
3020 | | int nXSize, int nYSize, void *pData, int nBufXSize, |
3021 | | int nBufYSize, GDALDataType eBufType, |
3022 | | int nBandCount, const int *panBandMap, |
3023 | | GSpacing nPixelSpace, GSpacing nLineSpace, |
3024 | | GSpacing nBandSpace, |
3025 | | GDALRasterIOExtraArg *psExtraArg) |
3026 | | |
3027 | 0 | { |
3028 | 0 | GDALRasterIOExtraArg sExtraArg; |
3029 | 0 | if (psExtraArg == nullptr) |
3030 | 0 | { |
3031 | 0 | INIT_RASTERIO_EXTRA_ARG(sExtraArg); |
3032 | | |
3033 | | // 4 below inits are not strictly needed but make Coverity Scan |
3034 | | // happy |
3035 | 0 | sExtraArg.dfXOff = nXOff; |
3036 | 0 | sExtraArg.dfYOff = nYOff; |
3037 | 0 | sExtraArg.dfXSize = nXSize; |
3038 | 0 | sExtraArg.dfYSize = nYSize; |
3039 | |
|
3040 | 0 | psExtraArg = &sExtraArg; |
3041 | 0 | } |
3042 | 0 | else if (CPL_UNLIKELY(psExtraArg->nVersion > |
3043 | 0 | RASTERIO_EXTRA_ARG_CURRENT_VERSION)) |
3044 | 0 | { |
3045 | 0 | ReportError(CE_Failure, CPLE_AppDefined, |
3046 | 0 | "Unhandled version of GDALRasterIOExtraArg"); |
3047 | 0 | return CE_Failure; |
3048 | 0 | } |
3049 | | |
3050 | 0 | GDALRasterIOExtraArgSetResampleAlg(psExtraArg, nXSize, nYSize, nBufXSize, |
3051 | 0 | nBufYSize); |
3052 | |
|
3053 | 0 | if (CPL_UNLIKELY(nullptr == pData)) |
3054 | 0 | { |
3055 | 0 | ReportError(CE_Failure, CPLE_AppDefined, |
3056 | 0 | "The buffer into which the data should be read is null"); |
3057 | 0 | return CE_Failure; |
3058 | 0 | } |
3059 | | |
3060 | | /* -------------------------------------------------------------------- */ |
3061 | | /* Do some validation of parameters. */ |
3062 | | /* -------------------------------------------------------------------- */ |
3063 | | |
3064 | 0 | if (CPL_UNLIKELY(eRWFlag != GF_Read && eRWFlag != GF_Write)) |
3065 | 0 | { |
3066 | 0 | ReportError( |
3067 | 0 | CE_Failure, CPLE_IllegalArg, |
3068 | 0 | "eRWFlag = %d, only GF_Read (0) and GF_Write (1) are legal.", |
3069 | 0 | eRWFlag); |
3070 | 0 | return CE_Failure; |
3071 | 0 | } |
3072 | | |
3073 | 0 | if (eRWFlag == GF_Write) |
3074 | 0 | { |
3075 | 0 | if (CPL_UNLIKELY(eAccess != GA_Update)) |
3076 | 0 | { |
3077 | 0 | ReportError(CE_Failure, CPLE_AppDefined, |
3078 | 0 | "Write operation not permitted on dataset opened " |
3079 | 0 | "in read-only mode"); |
3080 | 0 | return CE_Failure; |
3081 | 0 | } |
3082 | 0 | } |
3083 | | |
3084 | 0 | int bStopProcessing = FALSE; |
3085 | 0 | CPLErr eErr = ValidateRasterIOOrAdviseReadParameters( |
3086 | 0 | "RasterIO()", &bStopProcessing, nXOff, nYOff, nXSize, nYSize, nBufXSize, |
3087 | 0 | nBufYSize, nBandCount, panBandMap); |
3088 | 0 | if (eErr != CE_None || bStopProcessing) |
3089 | 0 | return eErr; |
3090 | 0 | if (CPL_UNLIKELY(eBufType == GDT_Unknown || eBufType == GDT_TypeCount)) |
3091 | 0 | { |
3092 | 0 | ReportError(CE_Failure, CPLE_AppDefined, |
3093 | 0 | "Illegal GDT_Unknown/GDT_TypeCount argument"); |
3094 | 0 | return CE_Failure; |
3095 | 0 | } |
3096 | | |
3097 | | /* -------------------------------------------------------------------- */ |
3098 | | /* If pixel and line spacing are defaulted assign reasonable */ |
3099 | | /* value assuming a packed buffer. */ |
3100 | | /* -------------------------------------------------------------------- */ |
3101 | 0 | if (nPixelSpace == 0) |
3102 | 0 | nPixelSpace = GDALGetDataTypeSizeBytes(eBufType); |
3103 | |
|
3104 | 0 | if (nLineSpace == 0) |
3105 | 0 | { |
3106 | 0 | nLineSpace = nPixelSpace * nBufXSize; |
3107 | 0 | } |
3108 | |
|
3109 | 0 | if (nBandSpace == 0 && nBandCount > 1) |
3110 | 0 | { |
3111 | 0 | nBandSpace = nLineSpace * nBufYSize; |
3112 | 0 | } |
3113 | |
|
3114 | 0 | if (panBandMap == nullptr) |
3115 | 0 | { |
3116 | 0 | if (!m_poPrivate) |
3117 | 0 | return CE_Failure; |
3118 | 0 | CPLAssert(static_cast<int>(m_poPrivate->m_anBandMap.size()) == nBands); |
3119 | 0 | panBandMap = m_poPrivate->m_anBandMap.data(); |
3120 | 0 | } |
3121 | | |
3122 | 0 | int bCallLeaveReadWrite = EnterReadWrite(eRWFlag); |
3123 | | |
3124 | | /* -------------------------------------------------------------------- */ |
3125 | | /* We are being forced to use cached IO instead of a driver */ |
3126 | | /* specific implementation. */ |
3127 | | /* -------------------------------------------------------------------- */ |
3128 | 0 | if (bForceCachedIO) |
3129 | 0 | { |
3130 | 0 | eErr = BlockBasedRasterIO(eRWFlag, nXOff, nYOff, nXSize, nYSize, pData, |
3131 | 0 | nBufXSize, nBufYSize, eBufType, nBandCount, |
3132 | 0 | panBandMap, nPixelSpace, nLineSpace, |
3133 | 0 | nBandSpace, psExtraArg); |
3134 | 0 | } |
3135 | | |
3136 | | /* -------------------------------------------------------------------- */ |
3137 | | /* Call the format specific function. */ |
3138 | | /* -------------------------------------------------------------------- */ |
3139 | 0 | else |
3140 | 0 | { |
3141 | 0 | eErr = IRasterIO(eRWFlag, nXOff, nYOff, nXSize, nYSize, pData, |
3142 | 0 | nBufXSize, nBufYSize, eBufType, nBandCount, |
3143 | | // TODO: remove this const_cast once IRasterIO() |
3144 | | // takes a const int* |
3145 | 0 | const_cast<int *>(panBandMap), nPixelSpace, nLineSpace, |
3146 | 0 | nBandSpace, psExtraArg); |
3147 | 0 | } |
3148 | |
|
3149 | 0 | if (bCallLeaveReadWrite) |
3150 | 0 | LeaveReadWrite(); |
3151 | |
|
3152 | 0 | return eErr; |
3153 | 0 | } |
3154 | | |
3155 | | /************************************************************************/ |
3156 | | /* GDALDatasetRasterIO() */ |
3157 | | /************************************************************************/ |
3158 | | |
3159 | | /** |
3160 | | * \brief Read/write a region of image data from multiple bands. |
3161 | | * |
3162 | | * Use GDALDatasetRasterIOEx() if 64 bit spacings or extra arguments (resampling |
3163 | | * resolution, progress callback, etc. are needed) |
3164 | | * |
3165 | | * Note: before GDAL 3.10, panBandMap type was "int*", and not "const int*" |
3166 | | * |
3167 | | * @see GDALDataset::RasterIO() |
3168 | | */ |
3169 | | |
3170 | | CPLErr CPL_STDCALL GDALDatasetRasterIO(GDALDatasetH hDS, GDALRWFlag eRWFlag, |
3171 | | int nXOff, int nYOff, int nXSize, |
3172 | | int nYSize, void *pData, int nBufXSize, |
3173 | | int nBufYSize, GDALDataType eBufType, |
3174 | | int nBandCount, const int *panBandMap, |
3175 | | int nPixelSpace, int nLineSpace, |
3176 | | int nBandSpace) |
3177 | | |
3178 | 0 | { |
3179 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetRasterIO", CE_Failure); |
3180 | | |
3181 | 0 | GDALDataset *poDS = GDALDataset::FromHandle(hDS); |
3182 | |
|
3183 | 0 | return poDS->RasterIO(eRWFlag, nXOff, nYOff, nXSize, nYSize, pData, |
3184 | 0 | nBufXSize, nBufYSize, eBufType, nBandCount, |
3185 | 0 | panBandMap, nPixelSpace, nLineSpace, nBandSpace, |
3186 | 0 | nullptr); |
3187 | 0 | } |
3188 | | |
3189 | | /************************************************************************/ |
3190 | | /* GDALDatasetRasterIOEx() */ |
3191 | | /************************************************************************/ |
3192 | | |
3193 | | /** |
3194 | | * \brief Read/write a region of image data from multiple bands. |
3195 | | * |
3196 | | * Note: before GDAL 3.10, panBandMap type was "int*", and not "const int*" |
3197 | | * |
3198 | | * @see GDALDataset::RasterIO() |
3199 | | */ |
3200 | | |
3201 | | CPLErr CPL_STDCALL GDALDatasetRasterIOEx( |
3202 | | GDALDatasetH hDS, GDALRWFlag eRWFlag, int nXOff, int nYOff, int nXSize, |
3203 | | int nYSize, void *pData, int nBufXSize, int nBufYSize, |
3204 | | GDALDataType eBufType, int nBandCount, const int *panBandMap, |
3205 | | GSpacing nPixelSpace, GSpacing nLineSpace, GSpacing nBandSpace, |
3206 | | GDALRasterIOExtraArg *psExtraArg) |
3207 | | |
3208 | 0 | { |
3209 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetRasterIOEx", CE_Failure); |
3210 | | |
3211 | 0 | GDALDataset *poDS = GDALDataset::FromHandle(hDS); |
3212 | |
|
3213 | 0 | return poDS->RasterIO(eRWFlag, nXOff, nYOff, nXSize, nYSize, pData, |
3214 | 0 | nBufXSize, nBufYSize, eBufType, nBandCount, |
3215 | 0 | panBandMap, nPixelSpace, nLineSpace, nBandSpace, |
3216 | 0 | psExtraArg); |
3217 | 0 | } |
3218 | | |
3219 | | /************************************************************************/ |
3220 | | /* GetOpenDatasets() */ |
3221 | | /************************************************************************/ |
3222 | | |
3223 | | /** |
3224 | | * \brief Fetch all open GDAL dataset handles. |
3225 | | * |
3226 | | * This method is the same as the C function GDALGetOpenDatasets(). |
3227 | | * |
3228 | | * NOTE: This method is not thread safe. The returned list may change |
3229 | | * at any time and it should not be freed. |
3230 | | * |
3231 | | * @param pnCount integer into which to place the count of dataset pointers |
3232 | | * being returned. |
3233 | | * |
3234 | | * @return a pointer to an array of dataset handles. |
3235 | | */ |
3236 | | |
3237 | | GDALDataset **GDALDataset::GetOpenDatasets(int *pnCount) |
3238 | | |
3239 | 0 | { |
3240 | 0 | CPLMutexHolderD(&hDLMutex); |
3241 | |
|
3242 | 0 | if (poAllDatasetMap == nullptr) |
3243 | 0 | { |
3244 | 0 | *pnCount = 0; |
3245 | 0 | return nullptr; |
3246 | 0 | } |
3247 | | |
3248 | 0 | *pnCount = static_cast<int>(poAllDatasetMap->size()); |
3249 | 0 | ppDatasets = static_cast<GDALDataset **>( |
3250 | 0 | CPLRealloc(ppDatasets, (*pnCount) * sizeof(GDALDataset *))); |
3251 | 0 | std::map<GDALDataset *, GIntBig>::iterator oIter = poAllDatasetMap->begin(); |
3252 | 0 | for (int i = 0; oIter != poAllDatasetMap->end(); ++oIter, ++i) |
3253 | 0 | ppDatasets[i] = oIter->first; |
3254 | 0 | return ppDatasets; |
3255 | 0 | } |
3256 | | |
3257 | | /************************************************************************/ |
3258 | | /* GDALGetOpenDatasets() */ |
3259 | | /************************************************************************/ |
3260 | | |
3261 | | /** |
3262 | | * \brief Fetch all open GDAL dataset handles. |
3263 | | * |
3264 | | * @see GDALDataset::GetOpenDatasets() |
3265 | | */ |
3266 | | |
3267 | | void CPL_STDCALL GDALGetOpenDatasets(GDALDatasetH **ppahDSList, int *pnCount) |
3268 | | |
3269 | 0 | { |
3270 | 0 | VALIDATE_POINTER0(ppahDSList, "GDALGetOpenDatasets"); |
3271 | 0 | VALIDATE_POINTER0(pnCount, "GDALGetOpenDatasets"); |
3272 | | |
3273 | 0 | *ppahDSList = |
3274 | 0 | reinterpret_cast<GDALDatasetH *>(GDALDataset::GetOpenDatasets(pnCount)); |
3275 | 0 | } |
3276 | | |
3277 | | /************************************************************************/ |
3278 | | /* GDALCleanOpenDatasetsList() */ |
3279 | | /************************************************************************/ |
3280 | | |
3281 | | // Useful when called from the child of a fork(), to avoid closing |
3282 | | // the datasets of the parent at the child termination. |
3283 | | void GDALNullifyOpenDatasetsList() |
3284 | 0 | { |
3285 | 0 | poAllDatasetMap = nullptr; |
3286 | 0 | phSharedDatasetSet = nullptr; |
3287 | 0 | ppDatasets = nullptr; |
3288 | 0 | hDLMutex = nullptr; |
3289 | 0 | } |
3290 | | |
3291 | | /************************************************************************/ |
3292 | | /* GDALGetAccess() */ |
3293 | | /************************************************************************/ |
3294 | | |
3295 | | /** |
3296 | | * \brief Return access flag |
3297 | | * |
3298 | | * @see GDALDataset::GetAccess() |
3299 | | */ |
3300 | | |
3301 | | int CPL_STDCALL GDALGetAccess(GDALDatasetH hDS) |
3302 | 0 | { |
3303 | 0 | VALIDATE_POINTER1(hDS, "GDALGetAccess", 0); |
3304 | | |
3305 | 0 | return GDALDataset::FromHandle(hDS)->GetAccess(); |
3306 | 0 | } |
3307 | | |
3308 | | /************************************************************************/ |
3309 | | /* AdviseRead() */ |
3310 | | /************************************************************************/ |
3311 | | |
3312 | | /** |
3313 | | * \brief Advise driver of upcoming read requests. |
3314 | | * |
3315 | | * Some GDAL drivers operate more efficiently if they know in advance what |
3316 | | * set of upcoming read requests will be made. The AdviseRead() method allows |
3317 | | * an application to notify the driver of the region and bands of interest, |
3318 | | * and at what resolution the region will be read. |
3319 | | * |
3320 | | * Many drivers just ignore the AdviseRead() call, but it can dramatically |
3321 | | * accelerate access via some drivers. |
3322 | | * |
3323 | | * Depending on call paths, drivers might receive several calls to |
3324 | | * AdviseRead() with the same parameters. |
3325 | | * |
3326 | | * @param nXOff The pixel offset to the top left corner of the region |
3327 | | * of the band to be accessed. This would be zero to start from the left side. |
3328 | | * |
3329 | | * @param nYOff The line offset to the top left corner of the region |
3330 | | * of the band to be accessed. This would be zero to start from the top. |
3331 | | * |
3332 | | * @param nXSize The width of the region of the band to be accessed in pixels. |
3333 | | * |
3334 | | * @param nYSize The height of the region of the band to be accessed in lines. |
3335 | | * |
3336 | | * @param nBufXSize the width of the buffer image into which the desired region |
3337 | | * is to be read, or from which it is to be written. |
3338 | | * |
3339 | | * @param nBufYSize the height of the buffer image into which the desired |
3340 | | * region is to be read, or from which it is to be written. |
3341 | | * |
3342 | | * @param eBufType the type of the pixel values in the pData data buffer. The |
3343 | | * pixel values will automatically be translated to/from the GDALRasterBand |
3344 | | * data type as needed. |
3345 | | * |
3346 | | * @param nBandCount the number of bands being read or written. |
3347 | | * |
3348 | | * @param panBandMap the list of nBandCount band numbers being read/written. |
3349 | | * Note band numbers are 1 based. This may be NULL to select the first |
3350 | | * nBandCount bands. |
3351 | | * |
3352 | | * @param papszOptions a list of name=value strings with special control |
3353 | | * options. Normally this is NULL. |
3354 | | * |
3355 | | * @return CE_Failure if the request is invalid and CE_None if it works or |
3356 | | * is ignored. |
3357 | | */ |
3358 | | |
3359 | | CPLErr GDALDataset::AdviseRead(int nXOff, int nYOff, int nXSize, int nYSize, |
3360 | | int nBufXSize, int nBufYSize, |
3361 | | GDALDataType eBufType, int nBandCount, |
3362 | | int *panBandMap, char **papszOptions) |
3363 | | |
3364 | 0 | { |
3365 | | /* -------------------------------------------------------------------- */ |
3366 | | /* Do some validation of parameters. */ |
3367 | | /* -------------------------------------------------------------------- */ |
3368 | 0 | int bStopProcessing = FALSE; |
3369 | 0 | CPLErr eErr = ValidateRasterIOOrAdviseReadParameters( |
3370 | 0 | "AdviseRead()", &bStopProcessing, nXOff, nYOff, nXSize, nYSize, |
3371 | 0 | nBufXSize, nBufYSize, nBandCount, panBandMap); |
3372 | 0 | if (eErr != CE_None || bStopProcessing) |
3373 | 0 | return eErr; |
3374 | | |
3375 | 0 | for (int iBand = 0; iBand < nBandCount; ++iBand) |
3376 | 0 | { |
3377 | 0 | GDALRasterBand *poBand = nullptr; |
3378 | |
|
3379 | 0 | if (panBandMap == nullptr) |
3380 | 0 | poBand = GetRasterBand(iBand + 1); |
3381 | 0 | else |
3382 | 0 | poBand = GetRasterBand(panBandMap[iBand]); |
3383 | |
|
3384 | 0 | if (poBand == nullptr) |
3385 | 0 | return CE_Failure; |
3386 | | |
3387 | 0 | eErr = poBand->AdviseRead(nXOff, nYOff, nXSize, nYSize, nBufXSize, |
3388 | 0 | nBufYSize, eBufType, papszOptions); |
3389 | |
|
3390 | 0 | if (eErr != CE_None) |
3391 | 0 | return eErr; |
3392 | 0 | } |
3393 | | |
3394 | 0 | return CE_None; |
3395 | 0 | } |
3396 | | |
3397 | | /************************************************************************/ |
3398 | | /* GDALDatasetAdviseRead() */ |
3399 | | /************************************************************************/ |
3400 | | |
3401 | | /** |
3402 | | * \brief Advise driver of upcoming read requests. |
3403 | | * |
3404 | | * @see GDALDataset::AdviseRead() |
3405 | | */ |
3406 | | CPLErr CPL_STDCALL GDALDatasetAdviseRead(GDALDatasetH hDS, int nXOff, int nYOff, |
3407 | | int nXSize, int nYSize, int nBufXSize, |
3408 | | int nBufYSize, GDALDataType eDT, |
3409 | | int nBandCount, int *panBandMap, |
3410 | | CSLConstList papszOptions) |
3411 | | |
3412 | 0 | { |
3413 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetAdviseRead", CE_Failure); |
3414 | | |
3415 | 0 | return GDALDataset::FromHandle(hDS)->AdviseRead( |
3416 | 0 | nXOff, nYOff, nXSize, nYSize, nBufXSize, nBufYSize, eDT, nBandCount, |
3417 | 0 | panBandMap, const_cast<char **>(papszOptions)); |
3418 | 0 | } |
3419 | | |
3420 | | /************************************************************************/ |
3421 | | /* GDALAntiRecursionStruct */ |
3422 | | /************************************************************************/ |
3423 | | |
3424 | | // Prevent infinite recursion. |
3425 | | struct GDALAntiRecursionStruct |
3426 | | { |
3427 | | struct DatasetContext |
3428 | | { |
3429 | | std::string osFilename; |
3430 | | int nOpenFlags; |
3431 | | std::string osAllowedDrivers; |
3432 | | |
3433 | | DatasetContext(const std::string &osFilenameIn, int nOpenFlagsIn, |
3434 | | const std::string &osAllowedDriversIn) |
3435 | 0 | : osFilename(osFilenameIn), nOpenFlags(nOpenFlagsIn), |
3436 | 0 | osAllowedDrivers(osAllowedDriversIn) |
3437 | 0 | { |
3438 | 0 | } |
3439 | | }; |
3440 | | |
3441 | | struct DatasetContextCompare |
3442 | | { |
3443 | | bool operator()(const DatasetContext &lhs, |
3444 | | const DatasetContext &rhs) const |
3445 | 0 | { |
3446 | 0 | return lhs.osFilename < rhs.osFilename || |
3447 | 0 | (lhs.osFilename == rhs.osFilename && |
3448 | 0 | (lhs.nOpenFlags < rhs.nOpenFlags || |
3449 | 0 | (lhs.nOpenFlags == rhs.nOpenFlags && |
3450 | 0 | lhs.osAllowedDrivers < rhs.osAllowedDrivers))); |
3451 | 0 | } |
3452 | | }; |
3453 | | |
3454 | | ~GDALAntiRecursionStruct() |
3455 | 0 | { |
3456 | 0 | CPLAssert(aosDatasetNamesWithFlags.empty()); |
3457 | 0 | CPLAssert(nRecLevel == 0); |
3458 | 0 | CPLAssert(m_oMapDepth.empty()); |
3459 | 0 | } |
3460 | | |
3461 | | std::set<DatasetContext, DatasetContextCompare> aosDatasetNamesWithFlags{}; |
3462 | | int nRecLevel = 0; |
3463 | | std::map<std::string, int> m_oMapDepth{}; |
3464 | | }; |
3465 | | |
3466 | | #ifdef _WIN32 |
3467 | | // Currently thread_local and C++ objects don't work well with DLL on Windows |
3468 | | static void FreeAntiRecursionOpen(void *pData) |
3469 | | { |
3470 | | delete static_cast<GDALAntiRecursionStruct *>(pData); |
3471 | | } |
3472 | | |
3473 | | static GDALAntiRecursionStruct &GetAntiRecursionOpen() |
3474 | | { |
3475 | | static GDALAntiRecursionStruct dummy; |
3476 | | int bMemoryErrorOccurred = false; |
3477 | | void *pData = |
3478 | | CPLGetTLSEx(CTLS_GDALOPEN_ANTIRECURSION, &bMemoryErrorOccurred); |
3479 | | if (bMemoryErrorOccurred) |
3480 | | { |
3481 | | return dummy; |
3482 | | } |
3483 | | if (pData == nullptr) |
3484 | | { |
3485 | | auto pAntiRecursion = new GDALAntiRecursionStruct(); |
3486 | | CPLSetTLSWithFreeFuncEx(CTLS_GDALOPEN_ANTIRECURSION, pAntiRecursion, |
3487 | | FreeAntiRecursionOpen, &bMemoryErrorOccurred); |
3488 | | if (bMemoryErrorOccurred) |
3489 | | { |
3490 | | delete pAntiRecursion; |
3491 | | return dummy; |
3492 | | } |
3493 | | return *pAntiRecursion; |
3494 | | } |
3495 | | return *static_cast<GDALAntiRecursionStruct *>(pData); |
3496 | | } |
3497 | | #else |
3498 | | static thread_local GDALAntiRecursionStruct g_tls_antiRecursion; |
3499 | | |
3500 | | static GDALAntiRecursionStruct &GetAntiRecursionOpen() |
3501 | 0 | { |
3502 | 0 | return g_tls_antiRecursion; |
3503 | 0 | } |
3504 | | #endif |
3505 | | |
3506 | | //! @cond Doxygen_Suppress |
3507 | | GDALAntiRecursionGuard::GDALAntiRecursionGuard(const std::string &osIdentifier) |
3508 | 0 | : m_psAntiRecursionStruct(&GetAntiRecursionOpen()), |
3509 | 0 | m_osIdentifier(osIdentifier), |
3510 | 0 | m_nDepth(++m_psAntiRecursionStruct->m_oMapDepth[m_osIdentifier]) |
3511 | 0 | { |
3512 | 0 | CPLAssert(!osIdentifier.empty()); |
3513 | 0 | } |
3514 | | |
3515 | | GDALAntiRecursionGuard::GDALAntiRecursionGuard( |
3516 | | const GDALAntiRecursionGuard &other, const std::string &osIdentifier) |
3517 | 0 | : m_psAntiRecursionStruct(other.m_psAntiRecursionStruct), |
3518 | 0 | m_osIdentifier(osIdentifier.empty() |
3519 | 0 | ? osIdentifier |
3520 | 0 | : other.m_osIdentifier + osIdentifier), |
3521 | 0 | m_nDepth(m_osIdentifier.empty() |
3522 | 0 | ? 0 |
3523 | 0 | : ++m_psAntiRecursionStruct->m_oMapDepth[m_osIdentifier]) |
3524 | 0 | { |
3525 | 0 | } |
3526 | | |
3527 | | GDALAntiRecursionGuard::~GDALAntiRecursionGuard() |
3528 | 0 | { |
3529 | 0 | if (!m_osIdentifier.empty()) |
3530 | 0 | { |
3531 | 0 | auto oIter = m_psAntiRecursionStruct->m_oMapDepth.find(m_osIdentifier); |
3532 | 0 | CPLAssert(oIter != m_psAntiRecursionStruct->m_oMapDepth.end()); |
3533 | 0 | if (--(oIter->second) == 0) |
3534 | 0 | m_psAntiRecursionStruct->m_oMapDepth.erase(oIter); |
3535 | 0 | } |
3536 | 0 | } |
3537 | | |
3538 | | //! @endcond |
3539 | | |
3540 | | /************************************************************************/ |
3541 | | /* GetFileList() */ |
3542 | | /************************************************************************/ |
3543 | | |
3544 | | /** |
3545 | | * \brief Fetch files forming dataset. |
3546 | | * |
3547 | | * Returns a list of files believed to be part of this dataset. If it returns |
3548 | | * an empty list of files it means there is believed to be no local file |
3549 | | * system files associated with the dataset (for instance a virtual dataset). |
3550 | | * The returned file list is owned by the caller and should be deallocated |
3551 | | * with CSLDestroy(). |
3552 | | * |
3553 | | * The returned filenames will normally be relative or absolute paths |
3554 | | * depending on the path used to originally open the dataset. The strings |
3555 | | * will be UTF-8 encoded. |
3556 | | * |
3557 | | * This method is the same as the C GDALGetFileList() function. |
3558 | | * |
3559 | | * @return NULL or a NULL terminated array of file names. |
3560 | | */ |
3561 | | |
3562 | | char **GDALDataset::GetFileList() |
3563 | | |
3564 | 0 | { |
3565 | 0 | CPLString osMainFilename = GetDescription(); |
3566 | 0 | VSIStatBufL sStat; |
3567 | |
|
3568 | 0 | GDALAntiRecursionStruct &sAntiRecursion = GetAntiRecursionOpen(); |
3569 | 0 | GDALAntiRecursionStruct::DatasetContext datasetCtxt(osMainFilename, 0, |
3570 | 0 | std::string()); |
3571 | 0 | auto &aosDatasetList = sAntiRecursion.aosDatasetNamesWithFlags; |
3572 | 0 | if (cpl::contains(aosDatasetList, datasetCtxt)) |
3573 | 0 | return nullptr; |
3574 | | |
3575 | | /* -------------------------------------------------------------------- */ |
3576 | | /* Is the main filename even a real filesystem object? */ |
3577 | | /* -------------------------------------------------------------------- */ |
3578 | 0 | int bMainFileReal = |
3579 | 0 | VSIStatExL(osMainFilename, &sStat, VSI_STAT_EXISTS_FLAG) == 0; |
3580 | | |
3581 | | /* -------------------------------------------------------------------- */ |
3582 | | /* Form new list. */ |
3583 | | /* -------------------------------------------------------------------- */ |
3584 | 0 | char **papszList = nullptr; |
3585 | |
|
3586 | 0 | if (bMainFileReal) |
3587 | 0 | papszList = CSLAddString(papszList, osMainFilename); |
3588 | |
|
3589 | 0 | if (sAntiRecursion.nRecLevel == 100) |
3590 | 0 | { |
3591 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
3592 | 0 | "GetFileList() called with too many recursion levels"); |
3593 | 0 | return papszList; |
3594 | 0 | } |
3595 | 0 | ++sAntiRecursion.nRecLevel; |
3596 | | |
3597 | | /* -------------------------------------------------------------------- */ |
3598 | | /* Do we have a known overview file? */ |
3599 | | /* -------------------------------------------------------------------- */ |
3600 | 0 | if (oOvManager.IsInitialized() && oOvManager.poODS != nullptr) |
3601 | 0 | { |
3602 | 0 | auto iter = aosDatasetList.insert(datasetCtxt).first; |
3603 | 0 | char **papszOvrList = oOvManager.poODS->GetFileList(); |
3604 | 0 | papszList = CSLInsertStrings(papszList, -1, papszOvrList); |
3605 | 0 | CSLDestroy(papszOvrList); |
3606 | 0 | aosDatasetList.erase(iter); |
3607 | 0 | } |
3608 | | |
3609 | | /* -------------------------------------------------------------------- */ |
3610 | | /* Do we have a known mask file? */ |
3611 | | /* -------------------------------------------------------------------- */ |
3612 | 0 | if (oOvManager.HaveMaskFile()) |
3613 | 0 | { |
3614 | 0 | auto iter = aosDatasetList.insert(std::move(datasetCtxt)).first; |
3615 | 0 | for (const char *pszFile : |
3616 | 0 | CPLStringList(oOvManager.poMaskDS->GetFileList())) |
3617 | 0 | { |
3618 | 0 | if (CSLFindString(papszList, pszFile) < 0) |
3619 | 0 | papszList = CSLAddString(papszList, pszFile); |
3620 | 0 | } |
3621 | 0 | aosDatasetList.erase(iter); |
3622 | 0 | } |
3623 | |
|
3624 | 0 | --sAntiRecursion.nRecLevel; |
3625 | |
|
3626 | 0 | return papszList; |
3627 | 0 | } |
3628 | | |
3629 | | /************************************************************************/ |
3630 | | /* GDALGetFileList() */ |
3631 | | /************************************************************************/ |
3632 | | |
3633 | | /** |
3634 | | * \brief Fetch files forming dataset. |
3635 | | * |
3636 | | * @see GDALDataset::GetFileList() |
3637 | | */ |
3638 | | |
3639 | | char **CPL_STDCALL GDALGetFileList(GDALDatasetH hDS) |
3640 | | |
3641 | 0 | { |
3642 | 0 | VALIDATE_POINTER1(hDS, "GDALGetFileList", nullptr); |
3643 | | |
3644 | 0 | return GDALDataset::FromHandle(hDS)->GetFileList(); |
3645 | 0 | } |
3646 | | |
3647 | | /************************************************************************/ |
3648 | | /* CreateMaskBand() */ |
3649 | | /************************************************************************/ |
3650 | | |
3651 | | /** |
3652 | | * \brief Adds a mask band to the dataset |
3653 | | * |
3654 | | * The default implementation of the CreateMaskBand() method is implemented |
3655 | | * based on similar rules to the .ovr handling implemented using the |
3656 | | * GDALDefaultOverviews object. A TIFF file with the extension .msk will |
3657 | | * be created with the same basename as the original file, and it will have |
3658 | | * one band. |
3659 | | * The mask images will be deflate compressed tiled images with the same |
3660 | | * block size as the original image if possible. |
3661 | | * It will have INTERNAL_MASK_FLAGS_xx metadata items set at the dataset |
3662 | | * level, where xx matches the band number of a band of the main dataset. The |
3663 | | * value of those items will be the one of the nFlagsIn parameter. |
3664 | | * |
3665 | | * Note that if you got a mask band with a previous call to GetMaskBand(), it |
3666 | | * might be invalidated by CreateMaskBand(). So you have to call GetMaskBand() |
3667 | | * again. |
3668 | | * |
3669 | | * |
3670 | | * @param nFlagsIn 0 or combination of GMF_PER_DATASET / GMF_ALPHA. |
3671 | | * GMF_PER_DATASET will be always set, even if not explicitly |
3672 | | * specified. |
3673 | | * @return CE_None on success or CE_Failure on an error. |
3674 | | * |
3675 | | * @see https://gdal.org/development/rfc/rfc15_nodatabitmask.html |
3676 | | * @see GDALRasterBand::CreateMaskBand() |
3677 | | * |
3678 | | */ |
3679 | | CPLErr GDALDataset::CreateMaskBand(int nFlagsIn) |
3680 | | |
3681 | 0 | { |
3682 | 0 | if (oOvManager.IsInitialized()) |
3683 | 0 | { |
3684 | 0 | CPLErr eErr = oOvManager.CreateMaskBand(nFlagsIn, -1); |
3685 | 0 | if (eErr != CE_None) |
3686 | 0 | return eErr; |
3687 | | |
3688 | | // Invalidate existing raster band masks. |
3689 | 0 | for (int i = 0; i < nBands; ++i) |
3690 | 0 | { |
3691 | 0 | GDALRasterBand *poBand = papoBands[i]; |
3692 | 0 | poBand->poMask.reset(); |
3693 | 0 | } |
3694 | |
|
3695 | 0 | return CE_None; |
3696 | 0 | } |
3697 | | |
3698 | 0 | ReportError(CE_Failure, CPLE_NotSupported, |
3699 | 0 | "CreateMaskBand() not supported for this dataset."); |
3700 | |
|
3701 | 0 | return CE_Failure; |
3702 | 0 | } |
3703 | | |
3704 | | /************************************************************************/ |
3705 | | /* GDALCreateDatasetMaskBand() */ |
3706 | | /************************************************************************/ |
3707 | | |
3708 | | /** |
3709 | | * \brief Adds a mask band to the dataset |
3710 | | * @see GDALDataset::CreateMaskBand() |
3711 | | */ |
3712 | | CPLErr CPL_STDCALL GDALCreateDatasetMaskBand(GDALDatasetH hDS, int nFlags) |
3713 | | |
3714 | 0 | { |
3715 | 0 | VALIDATE_POINTER1(hDS, "GDALCreateDatasetMaskBand", CE_Failure); |
3716 | | |
3717 | 0 | return GDALDataset::FromHandle(hDS)->CreateMaskBand(nFlags); |
3718 | 0 | } |
3719 | | |
3720 | | /************************************************************************/ |
3721 | | /* GDALOpen() */ |
3722 | | /************************************************************************/ |
3723 | | |
3724 | | /** |
3725 | | * \brief Open a raster file as a GDALDataset. |
3726 | | * |
3727 | | * This function will try to open the passed file, or virtual dataset |
3728 | | * name by invoking the Open method of each registered GDALDriver in turn. |
3729 | | * The first successful open will result in a returned dataset. If all |
3730 | | * drivers fail then NULL is returned and an error is issued. |
3731 | | * |
3732 | | * Several recommendations : |
3733 | | * <ul> |
3734 | | * <li>If you open a dataset object with GA_Update access, it is not recommended |
3735 | | * to open a new dataset on the same underlying file.</li> |
3736 | | * <li>The returned dataset should only be accessed by one thread at a time. If |
3737 | | * you want to use it from different threads, you must add all necessary code |
3738 | | * (mutexes, etc.) to avoid concurrent use of the object. (Some drivers, such |
3739 | | * as GeoTIFF, maintain internal state variables that are updated each time a |
3740 | | * new block is read, thus preventing concurrent use.) </li> |
3741 | | * </ul> |
3742 | | * |
3743 | | * For drivers supporting the VSI virtual file API, it is possible to open a |
3744 | | * file in a .zip archive (see VSIInstallZipFileHandler()), in a |
3745 | | * .tar/.tar.gz/.tgz archive (see VSIInstallTarFileHandler()) or on a HTTP / FTP |
3746 | | * server (see VSIInstallCurlFileHandler()) |
3747 | | * |
3748 | | * \sa GDALOpenShared() |
3749 | | * \sa GDALOpenEx() |
3750 | | * |
3751 | | * @param pszFilename the name of the file to access. In the case of |
3752 | | * exotic drivers this may not refer to a physical file, but instead contain |
3753 | | * information for the driver on how to access a dataset. It should be in UTF-8 |
3754 | | * encoding. |
3755 | | * |
3756 | | * @param eAccess the desired access, either GA_Update or GA_ReadOnly. Many |
3757 | | * drivers support only read only access. |
3758 | | * |
3759 | | * @return A GDALDatasetH handle or NULL on failure. For C++ applications |
3760 | | * this handle can be cast to a GDALDataset *. |
3761 | | */ |
3762 | | |
3763 | | GDALDatasetH CPL_STDCALL GDALOpen(const char *pszFilename, GDALAccess eAccess) |
3764 | | |
3765 | 0 | { |
3766 | 0 | const int nUpdateFlag = eAccess == GA_Update ? GDAL_OF_UPDATE : 0; |
3767 | 0 | const int nOpenFlags = GDAL_OF_RASTER | nUpdateFlag | GDAL_OF_VERBOSE_ERROR; |
3768 | 0 | GDALDatasetH hDataset = |
3769 | 0 | GDALOpenEx(pszFilename, nOpenFlags, nullptr, nullptr, nullptr); |
3770 | 0 | return hDataset; |
3771 | 0 | } |
3772 | | |
3773 | | /************************************************************************/ |
3774 | | /* GetSharedDS() */ |
3775 | | /************************************************************************/ |
3776 | | |
3777 | | static GDALDataset *GetSharedDS(const char *pszFilename, |
3778 | | unsigned int nOpenFlags, |
3779 | | const char *const *papszOpenOptions) |
3780 | 0 | { |
3781 | 0 | CPLMutexHolderD(&hDLMutex); |
3782 | |
|
3783 | 0 | if (phSharedDatasetSet != nullptr) |
3784 | 0 | { |
3785 | 0 | const GIntBig nThisPID = GDALGetResponsiblePIDForCurrentThread(); |
3786 | 0 | SharedDatasetCtxt sStruct; |
3787 | |
|
3788 | 0 | sStruct.nPID = nThisPID; |
3789 | 0 | sStruct.pszDescription = const_cast<char *>(pszFilename); |
3790 | 0 | sStruct.nOpenFlags = nOpenFlags & ~GDAL_OF_SHARED; |
3791 | 0 | std::string osConcatenatedOpenOptions = |
3792 | 0 | GDALSharedDatasetConcatenateOpenOptions(papszOpenOptions); |
3793 | 0 | sStruct.pszConcatenatedOpenOptions = &osConcatenatedOpenOptions[0]; |
3794 | 0 | sStruct.poDS = nullptr; |
3795 | 0 | SharedDatasetCtxt *psStruct = static_cast<SharedDatasetCtxt *>( |
3796 | 0 | CPLHashSetLookup(phSharedDatasetSet, &sStruct)); |
3797 | 0 | if (psStruct == nullptr && (nOpenFlags & GDAL_OF_UPDATE) == 0) |
3798 | 0 | { |
3799 | 0 | sStruct.nOpenFlags |= GDAL_OF_UPDATE; |
3800 | 0 | psStruct = static_cast<SharedDatasetCtxt *>( |
3801 | 0 | CPLHashSetLookup(phSharedDatasetSet, &sStruct)); |
3802 | 0 | } |
3803 | 0 | if (psStruct) |
3804 | 0 | { |
3805 | 0 | return psStruct->poDS; |
3806 | 0 | } |
3807 | 0 | } |
3808 | 0 | return nullptr; |
3809 | 0 | } |
3810 | | |
3811 | | /************************************************************************/ |
3812 | | /* GDALOpenEx() */ |
3813 | | /************************************************************************/ |
3814 | | |
3815 | | /** |
3816 | | * \brief Open a raster or vector file as a GDALDataset. |
3817 | | * |
3818 | | * This function will try to open the passed file, or virtual dataset |
3819 | | * name by invoking the Open method of each registered GDALDriver in turn. |
3820 | | * The first successful open will result in a returned dataset. If all |
3821 | | * drivers fail then NULL is returned and an error is issued. |
3822 | | * |
3823 | | * Several recommendations : |
3824 | | * <ul> |
3825 | | * <li>If you open a dataset object with GDAL_OF_UPDATE access, it is not |
3826 | | * recommended to open a new dataset on the same underlying file.</li> |
3827 | | * <li>The returned dataset should only be accessed by one thread at a time. If |
3828 | | * you want to use it from different threads, you must add all necessary code |
3829 | | * (mutexes, etc.) to avoid concurrent use of the object. (Some drivers, such |
3830 | | * as GeoTIFF, maintain internal state variables that are updated each time a |
3831 | | * new block is read, thus preventing concurrent use.) </li> |
3832 | | * </ul> |
3833 | | * |
3834 | | * For drivers supporting the VSI virtual file API, it is possible to open a |
3835 | | * file in a .zip archive (see VSIInstallZipFileHandler()), in a |
3836 | | * .tar/.tar.gz/.tgz archive (see VSIInstallTarFileHandler()) or on a HTTP / FTP |
3837 | | * server (see VSIInstallCurlFileHandler()) |
3838 | | * |
3839 | | * In order to reduce the need for searches through the operating system |
3840 | | * file system machinery, it is possible to give an optional list of files with |
3841 | | * the papszSiblingFiles parameter. |
3842 | | * This is the list of all files at the same level in the file system as the |
3843 | | * target file, including the target file. The filenames must not include any |
3844 | | * path components, are essentially just the output of VSIReadDir() on the |
3845 | | * parent directory. If the target object does not have filesystem semantics |
3846 | | * then the file list should be NULL. |
3847 | | * |
3848 | | * @param pszFilename the name of the file to access. In the case of |
3849 | | * exotic drivers this may not refer to a physical file, but instead contain |
3850 | | * information for the driver on how to access a dataset. It should be in UTF-8 |
3851 | | * encoding. |
3852 | | * |
3853 | | * @param nOpenFlags a combination of GDAL_OF_ flags that may be combined |
3854 | | * through logical or operator. |
3855 | | * <ul> |
3856 | | * <li>Driver kind: |
3857 | | * <ul> |
3858 | | * <li>GDAL_OF_RASTER for raster drivers,</li> |
3859 | | * <li>GDAL_OF_MULTIDIM_RASTER for multidimensional raster drivers,</li> |
3860 | | * <li>GDAL_OF_VECTOR for vector drivers,</li> |
3861 | | * <li>GDAL_OF_GNM for Geographic Network Model drivers.</li> |
3862 | | * </ul> |
3863 | | * GDAL_OF_RASTER and GDAL_OF_MULTIDIM_RASTER are generally mutually |
3864 | | * exclusive. If none of the value is specified, GDAL_OF_RASTER | GDAL_OF_VECTOR |
3865 | | * | GDAL_OF_GNM is implied. |
3866 | | * </li> |
3867 | | * <li>Access mode: GDAL_OF_READONLY (exclusive)or GDAL_OF_UPDATE. |
3868 | | * </li> |
3869 | | * <li>Shared mode: GDAL_OF_SHARED. If set, |
3870 | | * it allows the sharing of GDALDataset handles for a dataset with other callers |
3871 | | * that have set GDAL_OF_SHARED. In particular, GDALOpenEx() will first consult |
3872 | | * its list of currently open and shared GDALDataset's, and if the |
3873 | | * GetDescription() name for one exactly matches the pszFilename passed to |
3874 | | * GDALOpenEx() it will be referenced and returned, if GDALOpenEx() is called |
3875 | | * from the same thread. |
3876 | | * </li> |
3877 | | * <li>Thread safe mode: GDAL_OF_THREAD_SAFE (added in 3.10). |
3878 | | * This must be use in combination with GDAL_OF_RASTER, and is mutually |
3879 | | * exclusive with GDAL_OF_UPDATE, GDAL_OF_VECTOR, GDAL_OF_MULTIDIM_RASTER or |
3880 | | * GDAL_OF_GNM. |
3881 | | * </li> |
3882 | | * <li>Verbose error: GDAL_OF_VERBOSE_ERROR. If set, |
3883 | | * a failed attempt to open the file will lead to an error message to be |
3884 | | * reported. |
3885 | | * </li> |
3886 | | * </ul> |
3887 | | * |
3888 | | * @param papszAllowedDrivers NULL to consider all candidate drivers, or a NULL |
3889 | | * terminated list of strings with the driver short names that must be |
3890 | | * considered. |
3891 | | * |
3892 | | * @param papszOpenOptions NULL, or a NULL terminated list of strings with open |
3893 | | * options passed to candidate drivers. An option exists for all drivers, |
3894 | | * OVERVIEW_LEVEL=level, to select a particular overview level of a dataset. |
3895 | | * The level index starts at 0. The level number can be suffixed by "only" to |
3896 | | * specify that only this overview level must be visible, and not sub-levels. |
3897 | | * Open options are validated by default, and a warning is emitted in case the |
3898 | | * option is not recognized. In some scenarios, it might be not desirable (e.g. |
3899 | | * when not knowing which driver will open the file), so the special open option |
3900 | | * VALIDATE_OPEN_OPTIONS can be set to NO to avoid such warnings. Alternatively, |
3901 | | * that it may not cause a warning if the driver doesn't declare this option. |
3902 | | * Starting with GDAL 3.3, OVERVIEW_LEVEL=NONE is supported to indicate that |
3903 | | * no overviews should be exposed. |
3904 | | * |
3905 | | * @param papszSiblingFiles NULL, or a NULL terminated list of strings that are |
3906 | | * filenames that are auxiliary to the main filename. If NULL is passed, a |
3907 | | * probing of the file system will be done. |
3908 | | * |
3909 | | * @return A GDALDatasetH handle or NULL on failure. For C++ applications |
3910 | | * this handle can be cast to a GDALDataset *. |
3911 | | * |
3912 | | */ |
3913 | | |
3914 | | GDALDatasetH CPL_STDCALL GDALOpenEx(const char *pszFilename, |
3915 | | unsigned int nOpenFlags, |
3916 | | const char *const *papszAllowedDrivers, |
3917 | | const char *const *papszOpenOptions, |
3918 | | const char *const *papszSiblingFiles) |
3919 | 0 | { |
3920 | 0 | VALIDATE_POINTER1(pszFilename, "GDALOpen", nullptr); |
3921 | | |
3922 | | // Hack for the ZARR driver. We translate the CACHE_KERCHUNK_JSON |
3923 | | // into VSIKERCHUNK_USE_CACHE config option |
3924 | 0 | std::unique_ptr<CPLConfigOptionSetter> poVSIKERCHUNK_USE_CACHESetter; |
3925 | 0 | if (CPLFetchBool(papszOpenOptions, "CACHE_KERCHUNK_JSON", false)) |
3926 | 0 | { |
3927 | 0 | poVSIKERCHUNK_USE_CACHESetter = std::make_unique<CPLConfigOptionSetter>( |
3928 | 0 | "VSIKERCHUNK_USE_CACHE", "YES", false); |
3929 | 0 | } |
3930 | | |
3931 | | // Do some sanity checks on incompatible flags with thread-safe mode. |
3932 | 0 | if ((nOpenFlags & GDAL_OF_THREAD_SAFE) != 0) |
3933 | 0 | { |
3934 | 0 | const struct |
3935 | 0 | { |
3936 | 0 | int nFlag; |
3937 | 0 | const char *pszFlagName; |
3938 | 0 | } asFlags[] = { |
3939 | 0 | {GDAL_OF_UPDATE, "GDAL_OF_UPDATE"}, |
3940 | 0 | {GDAL_OF_VECTOR, "GDAL_OF_VECTOR"}, |
3941 | 0 | {GDAL_OF_MULTIDIM_RASTER, "GDAL_OF_MULTIDIM_RASTER"}, |
3942 | 0 | {GDAL_OF_GNM, "GDAL_OF_GNM"}, |
3943 | 0 | }; |
3944 | |
|
3945 | 0 | for (const auto &asFlag : asFlags) |
3946 | 0 | { |
3947 | 0 | if ((nOpenFlags & asFlag.nFlag) != 0) |
3948 | 0 | { |
3949 | 0 | CPLError(CE_Failure, CPLE_IllegalArg, |
3950 | 0 | "GDAL_OF_THREAD_SAFE and %s are mutually " |
3951 | 0 | "exclusive", |
3952 | 0 | asFlag.pszFlagName); |
3953 | 0 | return nullptr; |
3954 | 0 | } |
3955 | 0 | } |
3956 | 0 | } |
3957 | | |
3958 | | // If no driver kind is specified, assume all are to be probed. |
3959 | 0 | if ((nOpenFlags & GDAL_OF_KIND_MASK) == 0) |
3960 | 0 | nOpenFlags |= GDAL_OF_KIND_MASK & ~GDAL_OF_MULTIDIM_RASTER; |
3961 | | |
3962 | | /* -------------------------------------------------------------------- */ |
3963 | | /* In case of shared dataset, first scan the existing list to see */ |
3964 | | /* if it could already contain the requested dataset. */ |
3965 | | /* -------------------------------------------------------------------- */ |
3966 | 0 | if (nOpenFlags & GDAL_OF_SHARED) |
3967 | 0 | { |
3968 | 0 | if (nOpenFlags & GDAL_OF_INTERNAL) |
3969 | 0 | { |
3970 | 0 | CPLError(CE_Failure, CPLE_IllegalArg, |
3971 | 0 | "GDAL_OF_SHARED and GDAL_OF_INTERNAL are exclusive"); |
3972 | 0 | return nullptr; |
3973 | 0 | } |
3974 | | |
3975 | 0 | auto poSharedDS = |
3976 | 0 | GetSharedDS(pszFilename, nOpenFlags, papszOpenOptions); |
3977 | 0 | if (poSharedDS) |
3978 | 0 | { |
3979 | 0 | poSharedDS->Reference(); |
3980 | 0 | return poSharedDS; |
3981 | 0 | } |
3982 | 0 | } |
3983 | | |
3984 | 0 | GDALDriverManager *poDM = GetGDALDriverManager(); |
3985 | | // CPLLocaleC oLocaleForcer; |
3986 | |
|
3987 | 0 | CPLErrorReset(); |
3988 | 0 | VSIErrorReset(); |
3989 | 0 | CPLAssert(nullptr != poDM); |
3990 | | |
3991 | | // Build GDALOpenInfo just now to avoid useless file stat'ing if a |
3992 | | // shared dataset was asked before. |
3993 | 0 | GDALOpenInfo oOpenInfo(pszFilename, nOpenFlags, |
3994 | 0 | const_cast<char **>(papszSiblingFiles)); |
3995 | 0 | oOpenInfo.papszAllowedDrivers = papszAllowedDrivers; |
3996 | |
|
3997 | 0 | GDALAntiRecursionStruct &sAntiRecursion = GetAntiRecursionOpen(); |
3998 | 0 | if (sAntiRecursion.nRecLevel == 100) |
3999 | 0 | { |
4000 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
4001 | 0 | "GDALOpen() called with too many recursion levels"); |
4002 | 0 | return nullptr; |
4003 | 0 | } |
4004 | | |
4005 | 0 | std::string osAllowedDrivers; |
4006 | 0 | for (const char *pszDriverName : cpl::Iterate(papszAllowedDrivers)) |
4007 | 0 | osAllowedDrivers += pszDriverName; |
4008 | 0 | auto dsCtxt = GDALAntiRecursionStruct::DatasetContext( |
4009 | 0 | std::string(pszFilename), nOpenFlags, osAllowedDrivers); |
4010 | 0 | if (cpl::contains(sAntiRecursion.aosDatasetNamesWithFlags, dsCtxt)) |
4011 | 0 | { |
4012 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
4013 | 0 | "GDALOpen() called on %s recursively", pszFilename); |
4014 | 0 | return nullptr; |
4015 | 0 | } |
4016 | | |
4017 | | // Remove leading @ if present. |
4018 | 0 | char **papszOpenOptionsCleaned = |
4019 | 0 | CSLDuplicate(const_cast<char **>(papszOpenOptions)); |
4020 | 0 | for (char **papszIter = papszOpenOptionsCleaned; papszIter && *papszIter; |
4021 | 0 | ++papszIter) |
4022 | 0 | { |
4023 | 0 | char *pszOption = *papszIter; |
4024 | 0 | if (pszOption[0] == '@') |
4025 | 0 | memmove(pszOption, pszOption + 1, strlen(pszOption + 1) + 1); |
4026 | 0 | } |
4027 | |
|
4028 | 0 | oOpenInfo.papszOpenOptions = papszOpenOptionsCleaned; |
4029 | 0 | oOpenInfo.nOpenFlags |= GDAL_OF_FROM_GDALOPEN; |
4030 | |
|
4031 | 0 | #ifdef OGRAPISPY_ENABLED |
4032 | 0 | const bool bUpdate = (nOpenFlags & GDAL_OF_UPDATE) != 0; |
4033 | 0 | const int iSnapshot = |
4034 | 0 | (nOpenFlags & GDAL_OF_VECTOR) != 0 && (nOpenFlags & GDAL_OF_RASTER) == 0 |
4035 | 0 | ? OGRAPISpyOpenTakeSnapshot(pszFilename, bUpdate) |
4036 | 0 | : INT_MIN; |
4037 | 0 | #endif |
4038 | |
|
4039 | 0 | const int nDriverCount = poDM->GetDriverCount(/*bIncludeHidden=*/true); |
4040 | 0 | GDALDriver *poMissingPluginDriver = nullptr; |
4041 | 0 | std::vector<GDALDriver *> apoSecondPassDrivers; |
4042 | | |
4043 | | // Lookup of matching driver for dataset can involve up to 2 passes: |
4044 | | // - in the first pass, all drivers that are compabile of the request mode |
4045 | | // (raster/vector/etc.) are probed using their Identify() method if it |
4046 | | // exists. If the Identify() method returns FALSE, the driver is skipped. |
4047 | | // If the Identify() methods returns GDAL_IDENTIFY_UNKNOWN and that the |
4048 | | // driver is a deferred-loading plugin, it is added to the |
4049 | | // apoSecondPassDrivers list for potential later probing, and execution |
4050 | | // continues to the next driver in the list. |
4051 | | // Otherwise if Identify() returns non-FALSE, the Open() method is used. |
4052 | | // If Open() returns a non-NULL dataset, the loop stops and it is |
4053 | | // returned. Otherwise looping over remaining drivers continues. |
4054 | | // - the second pass is optional, only if at least one driver was added |
4055 | | // into apoSecondPassDrivers during the first pass. It is similar |
4056 | | // to the first pass except it runs only on apoSecondPassDrivers drivers. |
4057 | | // And the Open() method of such drivers is used, causing them to be |
4058 | | // loaded for real. |
4059 | 0 | int iPass = 1; |
4060 | 0 | retry: |
4061 | 0 | for (int iDriver = 0; |
4062 | 0 | iDriver < (iPass == 1 ? nDriverCount |
4063 | 0 | : static_cast<int>(apoSecondPassDrivers.size())); |
4064 | 0 | ++iDriver) |
4065 | 0 | { |
4066 | 0 | GDALDriver *poDriver = |
4067 | 0 | iPass == 1 ? poDM->GetDriver(iDriver, /*bIncludeHidden=*/true) |
4068 | 0 | : apoSecondPassDrivers[iDriver]; |
4069 | 0 | if (papszAllowedDrivers != nullptr && |
4070 | 0 | CSLFindString(papszAllowedDrivers, |
4071 | 0 | GDALGetDriverShortName(poDriver)) == -1) |
4072 | 0 | { |
4073 | 0 | continue; |
4074 | 0 | } |
4075 | | |
4076 | 0 | if (poDriver->GetMetadataItem(GDAL_DCAP_OPEN) == nullptr) |
4077 | 0 | continue; |
4078 | | |
4079 | 0 | if ((nOpenFlags & GDAL_OF_RASTER) != 0 && |
4080 | 0 | (nOpenFlags & GDAL_OF_VECTOR) == 0 && |
4081 | 0 | poDriver->GetMetadataItem(GDAL_DCAP_RASTER) == nullptr) |
4082 | 0 | continue; |
4083 | 0 | if ((nOpenFlags & GDAL_OF_VECTOR) != 0 && |
4084 | 0 | (nOpenFlags & GDAL_OF_RASTER) == 0 && |
4085 | 0 | poDriver->GetMetadataItem(GDAL_DCAP_VECTOR) == nullptr) |
4086 | 0 | continue; |
4087 | 0 | if ((nOpenFlags & GDAL_OF_MULTIDIM_RASTER) != 0 && |
4088 | 0 | (nOpenFlags & GDAL_OF_RASTER) == 0 && |
4089 | 0 | poDriver->GetMetadataItem(GDAL_DCAP_MULTIDIM_RASTER) == nullptr) |
4090 | 0 | continue; |
4091 | | |
4092 | | // Remove general OVERVIEW_LEVEL open options from list before passing |
4093 | | // it to the driver, if it isn't a driver specific option already. |
4094 | 0 | char **papszTmpOpenOptions = nullptr; |
4095 | 0 | char **papszTmpOpenOptionsToValidate = nullptr; |
4096 | 0 | char **papszOptionsToValidate = const_cast<char **>(papszOpenOptions); |
4097 | 0 | if (CSLFetchNameValue(papszOpenOptionsCleaned, "OVERVIEW_LEVEL") != |
4098 | 0 | nullptr && |
4099 | 0 | !poDriver->HasOpenOption("OVERVIEW_LEVEL")) |
4100 | 0 | { |
4101 | 0 | papszTmpOpenOptions = CSLDuplicate(papszOpenOptionsCleaned); |
4102 | 0 | papszTmpOpenOptions = |
4103 | 0 | CSLSetNameValue(papszTmpOpenOptions, "OVERVIEW_LEVEL", nullptr); |
4104 | 0 | oOpenInfo.papszOpenOptions = papszTmpOpenOptions; |
4105 | |
|
4106 | 0 | papszOptionsToValidate = CSLDuplicate(papszOptionsToValidate); |
4107 | 0 | papszOptionsToValidate = CSLSetNameValue(papszOptionsToValidate, |
4108 | 0 | "OVERVIEW_LEVEL", nullptr); |
4109 | 0 | papszTmpOpenOptionsToValidate = papszOptionsToValidate; |
4110 | 0 | } |
4111 | |
|
4112 | 0 | const int nIdentifyRes = |
4113 | 0 | poDriver->pfnIdentifyEx |
4114 | 0 | ? poDriver->pfnIdentifyEx(poDriver, &oOpenInfo) |
4115 | 0 | : poDriver->pfnIdentify ? poDriver->pfnIdentify(&oOpenInfo) |
4116 | 0 | : GDAL_IDENTIFY_UNKNOWN; |
4117 | 0 | if (nIdentifyRes == FALSE) |
4118 | 0 | { |
4119 | 0 | CSLDestroy(papszTmpOpenOptions); |
4120 | 0 | CSLDestroy(papszTmpOpenOptionsToValidate); |
4121 | 0 | oOpenInfo.papszOpenOptions = papszOpenOptionsCleaned; |
4122 | 0 | continue; |
4123 | 0 | } |
4124 | 0 | else if (iPass == 1 && nIdentifyRes < 0 && |
4125 | 0 | poDriver->pfnOpen == nullptr && |
4126 | 0 | poDriver->GetMetadataItem("IS_NON_LOADED_PLUGIN")) |
4127 | 0 | { |
4128 | | // Not loaded plugin |
4129 | 0 | apoSecondPassDrivers.push_back(poDriver); |
4130 | 0 | CSLDestroy(papszTmpOpenOptions); |
4131 | 0 | CSLDestroy(papszTmpOpenOptionsToValidate); |
4132 | 0 | oOpenInfo.papszOpenOptions = papszOpenOptionsCleaned; |
4133 | 0 | continue; |
4134 | 0 | } |
4135 | | |
4136 | 0 | const bool bIdentifyRes = nIdentifyRes == GDAL_IDENTIFY_TRUE; |
4137 | 0 | if (bIdentifyRes) |
4138 | 0 | { |
4139 | 0 | GDALValidateOpenOptions(poDriver, papszOptionsToValidate); |
4140 | 0 | } |
4141 | |
|
4142 | 0 | #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION |
4143 | 0 | const bool bFpAvailableBefore = oOpenInfo.fpL != nullptr; |
4144 | 0 | CPLErrorReset(); |
4145 | 0 | #endif |
4146 | |
|
4147 | 0 | sAntiRecursion.nRecLevel++; |
4148 | 0 | sAntiRecursion.aosDatasetNamesWithFlags.insert(dsCtxt); |
4149 | |
|
4150 | 0 | GDALDataset *poDS = poDriver->Open(&oOpenInfo, false); |
4151 | |
|
4152 | 0 | sAntiRecursion.nRecLevel--; |
4153 | 0 | sAntiRecursion.aosDatasetNamesWithFlags.erase(dsCtxt); |
4154 | |
|
4155 | 0 | if (poDriver->pfnOpen != nullptr) |
4156 | 0 | { |
4157 | | // If we couldn't determine for sure with Identify() (it returned |
4158 | | // -1), but Open() managed to open the file, post validate options. |
4159 | 0 | if (poDS != nullptr && |
4160 | 0 | (poDriver->pfnIdentify || poDriver->pfnIdentifyEx) && |
4161 | 0 | !bIdentifyRes) |
4162 | 0 | { |
4163 | 0 | GDALValidateOpenOptions(poDriver, papszOptionsToValidate); |
4164 | 0 | } |
4165 | 0 | } |
4166 | 0 | else if (poDriver->pfnOpenWithDriverArg != nullptr) |
4167 | 0 | { |
4168 | | // do nothing |
4169 | 0 | } |
4170 | 0 | else if (bIdentifyRes && |
4171 | 0 | poDriver->GetMetadataItem("MISSING_PLUGIN_FILENAME")) |
4172 | 0 | { |
4173 | 0 | if (!poMissingPluginDriver) |
4174 | 0 | { |
4175 | 0 | poMissingPluginDriver = poDriver; |
4176 | 0 | } |
4177 | 0 | } |
4178 | 0 | else |
4179 | 0 | { |
4180 | | // should not happen given the GDAL_DCAP_OPEN check |
4181 | 0 | CSLDestroy(papszTmpOpenOptions); |
4182 | 0 | CSLDestroy(papszTmpOpenOptionsToValidate); |
4183 | 0 | oOpenInfo.papszOpenOptions = papszOpenOptionsCleaned; |
4184 | 0 | continue; |
4185 | 0 | } |
4186 | | |
4187 | 0 | CSLDestroy(papszTmpOpenOptions); |
4188 | 0 | CSLDestroy(papszTmpOpenOptionsToValidate); |
4189 | 0 | oOpenInfo.papszOpenOptions = papszOpenOptionsCleaned; |
4190 | |
|
4191 | 0 | if (poDS != nullptr) |
4192 | 0 | { |
4193 | 0 | if (poDS->papszOpenOptions == nullptr) |
4194 | 0 | { |
4195 | 0 | poDS->papszOpenOptions = papszOpenOptionsCleaned; |
4196 | 0 | papszOpenOptionsCleaned = nullptr; |
4197 | 0 | } |
4198 | | |
4199 | | // Deal with generic OVERVIEW_LEVEL open option, unless it is |
4200 | | // driver specific. |
4201 | 0 | if (CSLFetchNameValue(papszOpenOptions, "OVERVIEW_LEVEL") != |
4202 | 0 | nullptr && |
4203 | 0 | !poDriver->HasOpenOption("OVERVIEW_LEVEL")) |
4204 | 0 | { |
4205 | 0 | CPLString osVal( |
4206 | 0 | CSLFetchNameValue(papszOpenOptions, "OVERVIEW_LEVEL")); |
4207 | 0 | const int nOvrLevel = EQUAL(osVal, "NONE") ? -1 : atoi(osVal); |
4208 | 0 | const bool bThisLevelOnly = |
4209 | 0 | nOvrLevel == -1 || osVal.ifind("only") != std::string::npos; |
4210 | 0 | GDALDataset *poOvrDS = |
4211 | 0 | GDALCreateOverviewDataset(poDS, nOvrLevel, bThisLevelOnly); |
4212 | 0 | if (poOvrDS && (nOpenFlags & GDAL_OF_SHARED) != 0) |
4213 | 0 | { |
4214 | 0 | if (strcmp(pszFilename, poDS->GetDescription()) != 0) |
4215 | 0 | { |
4216 | 0 | CPLError( |
4217 | 0 | CE_Warning, CPLE_NotSupported, |
4218 | 0 | "A dataset opened by GDALOpenShared should have " |
4219 | 0 | "the same filename (%s) " |
4220 | 0 | "and description (%s)", |
4221 | 0 | pszFilename, poDS->GetDescription()); |
4222 | 0 | } |
4223 | 0 | else |
4224 | 0 | { |
4225 | 0 | CSLDestroy(poDS->papszOpenOptions); |
4226 | 0 | poDS->papszOpenOptions = CSLDuplicate(papszOpenOptions); |
4227 | 0 | poDS->papszOpenOptions = CSLSetNameValue( |
4228 | 0 | poDS->papszOpenOptions, "OVERVIEW_LEVEL", nullptr); |
4229 | 0 | } |
4230 | 0 | } |
4231 | 0 | poDS->ReleaseRef(); |
4232 | 0 | poDS = poOvrDS; |
4233 | 0 | if (poDS == nullptr) |
4234 | 0 | { |
4235 | 0 | if (nOpenFlags & GDAL_OF_VERBOSE_ERROR) |
4236 | 0 | { |
4237 | 0 | CPLError(CE_Failure, CPLE_OpenFailed, |
4238 | 0 | "Cannot open overview level %d of %s", |
4239 | 0 | nOvrLevel, pszFilename); |
4240 | 0 | } |
4241 | 0 | } |
4242 | 0 | else |
4243 | 0 | { |
4244 | | // For thread-safe opening, currently poDS is what will be |
4245 | | // the "master" dataset owned by the thread-safe dataset |
4246 | | // returned to the user, hence we do not register it as a |
4247 | | // visible one in the open dataset list, or mark it as shared. |
4248 | 0 | if (!(nOpenFlags & GDAL_OF_INTERNAL) && |
4249 | 0 | !(nOpenFlags & GDAL_OF_THREAD_SAFE)) |
4250 | 0 | { |
4251 | 0 | poDS->AddToDatasetOpenList(); |
4252 | 0 | } |
4253 | 0 | if (nOpenFlags & GDAL_OF_SHARED) |
4254 | 0 | { |
4255 | 0 | CSLDestroy(poDS->papszOpenOptions); |
4256 | 0 | poDS->papszOpenOptions = CSLDuplicate(papszOpenOptions); |
4257 | 0 | poDS->nOpenFlags = nOpenFlags; |
4258 | 0 | if (!(nOpenFlags & GDAL_OF_THREAD_SAFE)) |
4259 | 0 | poDS->MarkAsShared(); |
4260 | 0 | } |
4261 | 0 | } |
4262 | 0 | } |
4263 | 0 | else if (nOpenFlags & GDAL_OF_SHARED) |
4264 | 0 | { |
4265 | 0 | if (strcmp(pszFilename, poDS->GetDescription()) != 0) |
4266 | 0 | { |
4267 | 0 | CPLError(CE_Warning, CPLE_NotSupported, |
4268 | 0 | "A dataset opened by GDALOpenShared should have " |
4269 | 0 | "the same filename (%s) " |
4270 | 0 | "and description (%s)", |
4271 | 0 | pszFilename, poDS->GetDescription()); |
4272 | 0 | } |
4273 | 0 | else if (!(nOpenFlags & GDAL_OF_THREAD_SAFE)) |
4274 | 0 | { |
4275 | | // For thread-safe opening, currently poDS is what will be |
4276 | | // the "master" dataset owned by the thread-safe dataset |
4277 | | // returned to the user, hence we do not or mark it as shared. |
4278 | 0 | poDS->MarkAsShared(); |
4279 | 0 | } |
4280 | 0 | } |
4281 | |
|
4282 | 0 | VSIErrorReset(); |
4283 | |
|
4284 | 0 | CSLDestroy(papszOpenOptionsCleaned); |
4285 | |
|
4286 | 0 | #ifdef OGRAPISPY_ENABLED |
4287 | 0 | if (iSnapshot != INT_MIN) |
4288 | 0 | { |
4289 | 0 | GDALDatasetH hDS = GDALDataset::ToHandle(poDS); |
4290 | 0 | OGRAPISpyOpen(pszFilename, bUpdate, iSnapshot, &hDS); |
4291 | 0 | poDS = GDALDataset::FromHandle(hDS); |
4292 | 0 | } |
4293 | 0 | #endif |
4294 | |
|
4295 | 0 | if (poDS) |
4296 | 0 | { |
4297 | 0 | poDS->m_bCanBeReopened = true; |
4298 | |
|
4299 | 0 | if ((nOpenFlags & GDAL_OF_THREAD_SAFE) != 0) |
4300 | 0 | { |
4301 | 0 | poDS = |
4302 | 0 | GDALGetThreadSafeDataset( |
4303 | 0 | std::unique_ptr<GDALDataset>(poDS), GDAL_OF_RASTER) |
4304 | 0 | .release(); |
4305 | 0 | if (poDS) |
4306 | 0 | { |
4307 | 0 | poDS->m_bCanBeReopened = true; |
4308 | 0 | poDS->poDriver = poDriver; |
4309 | 0 | poDS->nOpenFlags = nOpenFlags; |
4310 | 0 | if (!(nOpenFlags & GDAL_OF_INTERNAL)) |
4311 | 0 | poDS->AddToDatasetOpenList(); |
4312 | 0 | if (nOpenFlags & GDAL_OF_SHARED) |
4313 | 0 | poDS->MarkAsShared(); |
4314 | 0 | } |
4315 | 0 | } |
4316 | 0 | } |
4317 | |
|
4318 | 0 | return poDS; |
4319 | 0 | } |
4320 | | |
4321 | 0 | #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION |
4322 | 0 | if (bFpAvailableBefore && oOpenInfo.fpL == nullptr) |
4323 | 0 | { |
4324 | | // In case the file descriptor was "consumed" by a driver |
4325 | | // that ultimately failed, re-open it for next drivers. |
4326 | 0 | oOpenInfo.fpL = VSIFOpenL( |
4327 | 0 | pszFilename, (oOpenInfo.eAccess == GA_Update) ? "r+b" : "rb"); |
4328 | 0 | } |
4329 | | #else |
4330 | | if (CPLGetLastErrorNo() != 0 && CPLGetLastErrorType() > CE_Warning) |
4331 | | { |
4332 | | CSLDestroy(papszOpenOptionsCleaned); |
4333 | | |
4334 | | #ifdef OGRAPISPY_ENABLED |
4335 | | if (iSnapshot != INT_MIN) |
4336 | | { |
4337 | | GDALDatasetH hDS = nullptr; |
4338 | | OGRAPISpyOpen(pszFilename, bUpdate, iSnapshot, &hDS); |
4339 | | } |
4340 | | #endif |
4341 | | return nullptr; |
4342 | | } |
4343 | | #endif |
4344 | 0 | } |
4345 | | |
4346 | | // cppcheck-suppress knownConditionTrueFalse |
4347 | 0 | if (iPass == 1 && !apoSecondPassDrivers.empty()) |
4348 | 0 | { |
4349 | 0 | CPLDebugOnly("GDAL", "GDALOpen(): Second pass"); |
4350 | 0 | iPass = 2; |
4351 | 0 | goto retry; |
4352 | 0 | } |
4353 | | |
4354 | 0 | CSLDestroy(papszOpenOptionsCleaned); |
4355 | |
|
4356 | 0 | #ifdef OGRAPISPY_ENABLED |
4357 | 0 | if (iSnapshot != INT_MIN) |
4358 | 0 | { |
4359 | 0 | GDALDatasetH hDS = nullptr; |
4360 | 0 | OGRAPISpyOpen(pszFilename, bUpdate, iSnapshot, &hDS); |
4361 | 0 | } |
4362 | 0 | #endif |
4363 | |
|
4364 | 0 | if (nOpenFlags & GDAL_OF_VERBOSE_ERROR) |
4365 | 0 | { |
4366 | 0 | if (nDriverCount == 0) |
4367 | 0 | { |
4368 | 0 | CPLError(CE_Failure, CPLE_OpenFailed, "No driver registered."); |
4369 | 0 | } |
4370 | 0 | else if (poMissingPluginDriver) |
4371 | 0 | { |
4372 | 0 | std::string osMsg("`"); |
4373 | 0 | osMsg += pszFilename; |
4374 | 0 | osMsg += "' not recognized as being in a supported file format. " |
4375 | 0 | "It could have been recognized by driver "; |
4376 | 0 | osMsg += poMissingPluginDriver->GetDescription(); |
4377 | 0 | osMsg += ", but plugin "; |
4378 | 0 | osMsg += |
4379 | 0 | GDALGetMessageAboutMissingPluginDriver(poMissingPluginDriver); |
4380 | |
|
4381 | 0 | CPLError(CE_Failure, CPLE_OpenFailed, "%s", osMsg.c_str()); |
4382 | 0 | } |
4383 | | // Check to see if there was a filesystem error, and report it if so. |
4384 | | // If not, return a more generic error. |
4385 | 0 | else if (!VSIToCPLError(CE_Failure, CPLE_OpenFailed)) |
4386 | 0 | { |
4387 | 0 | if (oOpenInfo.bStatOK) |
4388 | 0 | { |
4389 | 0 | CPLError(CE_Failure, CPLE_OpenFailed, |
4390 | 0 | "`%s' not recognized as being in a supported file " |
4391 | 0 | "format.", |
4392 | 0 | pszFilename); |
4393 | 0 | } |
4394 | 0 | else |
4395 | 0 | { |
4396 | | // If Stat failed and no VSI error was set, assume it is because |
4397 | | // the file did not exist on the filesystem. |
4398 | 0 | CPLError(CE_Failure, CPLE_OpenFailed, |
4399 | 0 | "`%s' does not exist in the file system, " |
4400 | 0 | "and is not recognized as a supported dataset name.", |
4401 | 0 | pszFilename); |
4402 | 0 | } |
4403 | 0 | } |
4404 | 0 | } |
4405 | |
|
4406 | 0 | return nullptr; |
4407 | 0 | } |
4408 | | |
4409 | | /************************************************************************/ |
4410 | | /* GDALOpenShared() */ |
4411 | | /************************************************************************/ |
4412 | | |
4413 | | /** |
4414 | | * \brief Open a raster file as a GDALDataset. |
4415 | | * |
4416 | | * This function works the same as GDALOpen(), but allows the sharing of |
4417 | | * GDALDataset handles for a dataset with other callers to GDALOpenShared(). |
4418 | | * |
4419 | | * In particular, GDALOpenShared() will first consult its list of currently |
4420 | | * open and shared GDALDataset's, and if the GetDescription() name for one |
4421 | | * exactly matches the pszFilename passed to GDALOpenShared() it will be |
4422 | | * referenced and returned. |
4423 | | * |
4424 | | * If GDALOpenShared() is called on the same |
4425 | | * pszFilename from two different threads, a different GDALDataset object will |
4426 | | * be returned as it is not safe to use the same dataset from different threads, |
4427 | | * unless the user does explicitly use mutexes in its code. |
4428 | | * |
4429 | | * For drivers supporting the VSI virtual file API, it is possible to open a |
4430 | | * file in a .zip archive (see VSIInstallZipFileHandler()), in a |
4431 | | * .tar/.tar.gz/.tgz archive (see VSIInstallTarFileHandler()) or on a HTTP / FTP |
4432 | | * server (see VSIInstallCurlFileHandler()) |
4433 | | * |
4434 | | * \sa GDALOpen() |
4435 | | * \sa GDALOpenEx() |
4436 | | * |
4437 | | * @param pszFilename the name of the file to access. In the case of |
4438 | | * exotic drivers this may not refer to a physical file, but instead contain |
4439 | | * information for the driver on how to access a dataset. It should be in |
4440 | | * UTF-8 encoding. |
4441 | | * |
4442 | | * @param eAccess the desired access, either GA_Update or GA_ReadOnly. Many |
4443 | | * drivers support only read only access. |
4444 | | * |
4445 | | * @return A GDALDatasetH handle or NULL on failure. For C++ applications |
4446 | | * this handle can be cast to a GDALDataset *. |
4447 | | */ |
4448 | | |
4449 | | GDALDatasetH CPL_STDCALL GDALOpenShared(const char *pszFilename, |
4450 | | GDALAccess eAccess) |
4451 | 0 | { |
4452 | 0 | VALIDATE_POINTER1(pszFilename, "GDALOpenShared", nullptr); |
4453 | 0 | return GDALOpenEx(pszFilename, |
4454 | 0 | GDAL_OF_RASTER | |
4455 | 0 | (eAccess == GA_Update ? GDAL_OF_UPDATE : 0) | |
4456 | 0 | GDAL_OF_SHARED | GDAL_OF_VERBOSE_ERROR, |
4457 | 0 | nullptr, nullptr, nullptr); |
4458 | 0 | } |
4459 | | |
4460 | | /************************************************************************/ |
4461 | | /* GDALClose() */ |
4462 | | /************************************************************************/ |
4463 | | |
4464 | | /** |
4465 | | * \brief Close GDAL dataset. |
4466 | | * |
4467 | | * For non-shared datasets (opened with GDALOpen()) the dataset is closed |
4468 | | * using the C++ "delete" operator, recovering all dataset related resources. |
4469 | | * For shared datasets (opened with GDALOpenShared()) the dataset is |
4470 | | * dereferenced, and closed only if the referenced count has dropped below 1. |
4471 | | * |
4472 | | * @param hDS The dataset to close. May be cast from a "GDALDataset *". |
4473 | | * @return CE_None in case of success (return value since GDAL 3.7). On a |
4474 | | * shared dataset whose reference count is not dropped below 1, CE_None will |
4475 | | * be returned. |
4476 | | */ |
4477 | | |
4478 | | CPLErr CPL_STDCALL GDALClose(GDALDatasetH hDS) |
4479 | | |
4480 | 0 | { |
4481 | 0 | if (!hDS) |
4482 | 0 | return CE_None; |
4483 | | |
4484 | 0 | #ifdef OGRAPISPY_ENABLED |
4485 | 0 | if (bOGRAPISpyEnabled) |
4486 | 0 | OGRAPISpyPreClose(hDS); |
4487 | 0 | #endif |
4488 | |
|
4489 | 0 | GDALDataset *poDS = GDALDataset::FromHandle(hDS); |
4490 | |
|
4491 | 0 | if (poDS->GetShared()) |
4492 | 0 | { |
4493 | | /* -------------------------------------------------------------------- |
4494 | | */ |
4495 | | /* If this file is in the shared dataset list then dereference */ |
4496 | | /* it, and only delete/remote it if the reference count has */ |
4497 | | /* dropped to zero. */ |
4498 | | /* -------------------------------------------------------------------- |
4499 | | */ |
4500 | 0 | if (poDS->Dereference() > 0) |
4501 | 0 | return CE_None; |
4502 | | |
4503 | 0 | CPLErr eErr = poDS->Close(); |
4504 | 0 | delete poDS; |
4505 | |
|
4506 | 0 | #ifdef OGRAPISPY_ENABLED |
4507 | 0 | if (bOGRAPISpyEnabled) |
4508 | 0 | OGRAPISpyPostClose(); |
4509 | 0 | #endif |
4510 | |
|
4511 | 0 | return eErr; |
4512 | 0 | } |
4513 | | |
4514 | | /* -------------------------------------------------------------------- */ |
4515 | | /* This is not shared dataset, so directly delete it. */ |
4516 | | /* -------------------------------------------------------------------- */ |
4517 | 0 | CPLErr eErr = poDS->Close(); |
4518 | 0 | delete poDS; |
4519 | |
|
4520 | 0 | #ifdef OGRAPISPY_ENABLED |
4521 | 0 | if (bOGRAPISpyEnabled) |
4522 | 0 | OGRAPISpyPostClose(); |
4523 | 0 | #endif |
4524 | 0 | return eErr; |
4525 | 0 | } |
4526 | | |
4527 | | /************************************************************************/ |
4528 | | /* GDALDumpOpenDataset() */ |
4529 | | /************************************************************************/ |
4530 | | |
4531 | | static int GDALDumpOpenSharedDatasetsForeach(void *elt, void *user_data) |
4532 | 0 | { |
4533 | 0 | SharedDatasetCtxt *psStruct = static_cast<SharedDatasetCtxt *>(elt); |
4534 | 0 | FILE *fp = static_cast<FILE *>(user_data); |
4535 | 0 | GDALDataset *poDS = psStruct->poDS; |
4536 | |
|
4537 | 0 | const char *pszDriverName = poDS->GetDriver() == nullptr |
4538 | 0 | ? "DriverIsNULL" |
4539 | 0 | : poDS->GetDriver()->GetDescription(); |
4540 | |
|
4541 | 0 | poDS->Reference(); |
4542 | 0 | CPL_IGNORE_RET_VAL( |
4543 | 0 | VSIFPrintf(fp, " %d %c %-6s %7d %dx%dx%d %s\n", poDS->Dereference(), |
4544 | 0 | poDS->GetShared() ? 'S' : 'N', pszDriverName, |
4545 | 0 | static_cast<int>(psStruct->nPID), poDS->GetRasterXSize(), |
4546 | 0 | poDS->GetRasterYSize(), poDS->GetRasterCount(), |
4547 | 0 | poDS->GetDescription())); |
4548 | |
|
4549 | 0 | return TRUE; |
4550 | 0 | } |
4551 | | |
4552 | | static int GDALDumpOpenDatasetsForeach(GDALDataset *poDS, FILE *fp) |
4553 | 0 | { |
4554 | | |
4555 | | // Don't list shared datasets. They have already been listed by |
4556 | | // GDALDumpOpenSharedDatasetsForeach. |
4557 | 0 | if (poDS->GetShared()) |
4558 | 0 | return TRUE; |
4559 | | |
4560 | 0 | const char *pszDriverName = poDS->GetDriver() == nullptr |
4561 | 0 | ? "DriverIsNULL" |
4562 | 0 | : poDS->GetDriver()->GetDescription(); |
4563 | |
|
4564 | 0 | poDS->Reference(); |
4565 | 0 | CPL_IGNORE_RET_VAL( |
4566 | 0 | VSIFPrintf(fp, " %d %c %-6s %7d %dx%dx%d %s\n", poDS->Dereference(), |
4567 | 0 | poDS->GetShared() ? 'S' : 'N', pszDriverName, -1, |
4568 | 0 | poDS->GetRasterXSize(), poDS->GetRasterYSize(), |
4569 | 0 | poDS->GetRasterCount(), poDS->GetDescription())); |
4570 | |
|
4571 | 0 | return TRUE; |
4572 | 0 | } |
4573 | | |
4574 | | /** |
4575 | | * \brief List open datasets. |
4576 | | * |
4577 | | * Dumps a list of all open datasets (shared or not) to the indicated |
4578 | | * text file (may be stdout or stderr). This function is primarily intended |
4579 | | * to assist in debugging "dataset leaks" and reference counting issues. |
4580 | | * The information reported includes the dataset name, referenced count, |
4581 | | * shared status, driver name, size, and band count. |
4582 | | */ |
4583 | | |
4584 | | int CPL_STDCALL GDALDumpOpenDatasets(FILE *fp) |
4585 | | |
4586 | 0 | { |
4587 | 0 | VALIDATE_POINTER1(fp, "GDALDumpOpenDatasets", 0); |
4588 | | |
4589 | 0 | CPLMutexHolderD(&hDLMutex); |
4590 | |
|
4591 | 0 | if (poAllDatasetMap == nullptr) |
4592 | 0 | return 0; |
4593 | | |
4594 | 0 | CPL_IGNORE_RET_VAL(VSIFPrintf(fp, "Open GDAL Datasets:\n")); |
4595 | |
|
4596 | 0 | for (const auto &oIter : *poAllDatasetMap) |
4597 | 0 | { |
4598 | 0 | GDALDumpOpenDatasetsForeach(oIter.first, fp); |
4599 | 0 | } |
4600 | |
|
4601 | 0 | if (phSharedDatasetSet != nullptr) |
4602 | 0 | { |
4603 | 0 | CPLHashSetForeach(phSharedDatasetSet, GDALDumpOpenSharedDatasetsForeach, |
4604 | 0 | fp); |
4605 | 0 | } |
4606 | 0 | return static_cast<int>(poAllDatasetMap->size()); |
4607 | 0 | } |
4608 | | |
4609 | | /************************************************************************/ |
4610 | | /* BeginAsyncReader() */ |
4611 | | /************************************************************************/ |
4612 | | |
4613 | | /** |
4614 | | * \brief Sets up an asynchronous data request |
4615 | | * |
4616 | | * This method establish an asynchronous raster read request for the |
4617 | | * indicated window on the dataset into the indicated buffer. The parameters |
4618 | | * for windowing, buffer size, buffer type and buffer organization are similar |
4619 | | * to those for GDALDataset::RasterIO(); however, this call only launches |
4620 | | * the request and filling the buffer is accomplished via calls to |
4621 | | * GetNextUpdatedRegion() on the return GDALAsyncReader session object. |
4622 | | * |
4623 | | * Once all processing for the created session is complete, or if no further |
4624 | | * refinement of the request is required, the GDALAsyncReader object should |
4625 | | * be destroyed with the GDALDataset::EndAsyncReader() method. |
4626 | | * |
4627 | | * Note that the data buffer (pData) will potentially continue to be |
4628 | | * updated as long as the session lives, but it is not deallocated when |
4629 | | * the session (GDALAsyncReader) is destroyed with EndAsyncReader(). It |
4630 | | * should be deallocated by the application at that point. |
4631 | | * |
4632 | | * Additional information on asynchronous IO in GDAL may be found at: |
4633 | | * https://gdal.org/development/rfc/rfc24_progressive_data_support.html |
4634 | | * |
4635 | | * This method is the same as the C GDALBeginAsyncReader() function. |
4636 | | * |
4637 | | * @param nXOff The pixel offset to the top left corner of the region |
4638 | | * of the band to be accessed. This would be zero to start from the left side. |
4639 | | * |
4640 | | * @param nYOff The line offset to the top left corner of the region |
4641 | | * of the band to be accessed. This would be zero to start from the top. |
4642 | | * |
4643 | | * @param nXSize The width of the region of the band to be accessed in pixels. |
4644 | | * |
4645 | | * @param nYSize The height of the region of the band to be accessed in lines. |
4646 | | * |
4647 | | * @param pBuf The buffer into which the data should be read. This buffer must |
4648 | | * contain at least nBufXSize * nBufYSize * nBandCount words of type eBufType. |
4649 | | * It is organized in left to right,top to bottom pixel order. Spacing is |
4650 | | * controlled by the nPixelSpace, and nLineSpace parameters. |
4651 | | * |
4652 | | * @param nBufXSize the width of the buffer image into which the desired region |
4653 | | * is to be read, or from which it is to be written. |
4654 | | * |
4655 | | * @param nBufYSize the height of the buffer image into which the desired |
4656 | | * region is to be read, or from which it is to be written. |
4657 | | * |
4658 | | * @param eBufType the type of the pixel values in the pData data buffer. The |
4659 | | * pixel values will automatically be translated to/from the GDALRasterBand |
4660 | | * data type as needed. |
4661 | | * |
4662 | | * @param nBandCount the number of bands being read or written. |
4663 | | * |
4664 | | * @param panBandMap the list of nBandCount band numbers being read/written. |
4665 | | * Note band numbers are 1 based. This may be NULL to select the first |
4666 | | * nBandCount bands. |
4667 | | * |
4668 | | * @param nPixelSpace The byte offset from the start of one pixel value in |
4669 | | * pData to the start of the next pixel value within a scanline. If defaulted |
4670 | | * (0) the size of the datatype eBufType is used. |
4671 | | * |
4672 | | * @param nLineSpace The byte offset from the start of one scanline in |
4673 | | * pData to the start of the next. If defaulted the size of the datatype |
4674 | | * eBufType * nBufXSize is used. |
4675 | | * |
4676 | | * @param nBandSpace the byte offset from the start of one bands data to the |
4677 | | * start of the next. If defaulted (zero) the value will be |
4678 | | * nLineSpace * nBufYSize implying band sequential organization |
4679 | | * of the data buffer. |
4680 | | * |
4681 | | * @param papszOptions Driver specific control options in a string list or NULL. |
4682 | | * Consult driver documentation for options supported. |
4683 | | * |
4684 | | * @return The GDALAsyncReader object representing the request. |
4685 | | */ |
4686 | | |
4687 | | GDALAsyncReader *GDALDataset::BeginAsyncReader( |
4688 | | int nXOff, int nYOff, int nXSize, int nYSize, void *pBuf, int nBufXSize, |
4689 | | int nBufYSize, GDALDataType eBufType, int nBandCount, int *panBandMap, |
4690 | | int nPixelSpace, int nLineSpace, int nBandSpace, char **papszOptions) |
4691 | 0 | { |
4692 | | // See gdaldefaultasync.cpp |
4693 | |
|
4694 | 0 | return GDALGetDefaultAsyncReader(this, nXOff, nYOff, nXSize, nYSize, pBuf, |
4695 | 0 | nBufXSize, nBufYSize, eBufType, nBandCount, |
4696 | 0 | panBandMap, nPixelSpace, nLineSpace, |
4697 | 0 | nBandSpace, papszOptions); |
4698 | 0 | } |
4699 | | |
4700 | | /************************************************************************/ |
4701 | | /* GDALBeginAsyncReader() */ |
4702 | | /************************************************************************/ |
4703 | | |
4704 | | /** |
4705 | | * \brief Sets up an asynchronous data request |
4706 | | * |
4707 | | * This method establish an asynchronous raster read request for the |
4708 | | * indicated window on the dataset into the indicated buffer. The parameters |
4709 | | * for windowing, buffer size, buffer type and buffer organization are similar |
4710 | | * to those for GDALDataset::RasterIO(); however, this call only launches |
4711 | | * the request and filling the buffer is accomplished via calls to |
4712 | | * GetNextUpdatedRegion() on the return GDALAsyncReader session object. |
4713 | | * |
4714 | | * Once all processing for the created session is complete, or if no further |
4715 | | * refinement of the request is required, the GDALAsyncReader object should |
4716 | | * be destroyed with the GDALDataset::EndAsyncReader() method. |
4717 | | * |
4718 | | * Note that the data buffer (pData) will potentially continue to be |
4719 | | * updated as long as the session lives, but it is not deallocated when |
4720 | | * the session (GDALAsyncReader) is destroyed with EndAsyncReader(). It |
4721 | | * should be deallocated by the application at that point. |
4722 | | * |
4723 | | * Additional information on asynchronous IO in GDAL may be found at: |
4724 | | * https://gdal.org/development/rfc/rfc24_progressive_data_support.html |
4725 | | * |
4726 | | * This method is the same as the C++ GDALDataset::BeginAsyncReader() method. |
4727 | | * |
4728 | | * @param hDS handle to the dataset object. |
4729 | | * |
4730 | | * @param nXOff The pixel offset to the top left corner of the region |
4731 | | * of the band to be accessed. This would be zero to start from the left side. |
4732 | | * |
4733 | | * @param nYOff The line offset to the top left corner of the region |
4734 | | * of the band to be accessed. This would be zero to start from the top. |
4735 | | * |
4736 | | * @param nXSize The width of the region of the band to be accessed in pixels. |
4737 | | * |
4738 | | * @param nYSize The height of the region of the band to be accessed in lines. |
4739 | | * |
4740 | | * @param pBuf The buffer into which the data should be read. This buffer must |
4741 | | * contain at least nBufXSize * nBufYSize * nBandCount words of type eBufType. |
4742 | | * It is organized in left to right,top to bottom pixel order. Spacing is |
4743 | | * controlled by the nPixelSpace, and nLineSpace parameters. |
4744 | | * |
4745 | | * @param nBufXSize the width of the buffer image into which the desired region |
4746 | | * is to be read, or from which it is to be written. |
4747 | | * |
4748 | | * @param nBufYSize the height of the buffer image into which the desired |
4749 | | * region is to be read, or from which it is to be written. |
4750 | | * |
4751 | | * @param eBufType the type of the pixel values in the pData data buffer. The |
4752 | | * pixel values will automatically be translated to/from the GDALRasterBand |
4753 | | * data type as needed. |
4754 | | * |
4755 | | * @param nBandCount the number of bands being read or written. |
4756 | | * |
4757 | | * @param panBandMap the list of nBandCount band numbers being read/written. |
4758 | | * Note band numbers are 1 based. This may be NULL to select the first |
4759 | | * nBandCount bands. |
4760 | | * |
4761 | | * @param nPixelSpace The byte offset from the start of one pixel value in |
4762 | | * pData to the start of the next pixel value within a scanline. If defaulted |
4763 | | * (0) the size of the datatype eBufType is used. |
4764 | | * |
4765 | | * @param nLineSpace The byte offset from the start of one scanline in |
4766 | | * pData to the start of the next. If defaulted the size of the datatype |
4767 | | * eBufType * nBufXSize is used. |
4768 | | * |
4769 | | * @param nBandSpace the byte offset from the start of one bands data to the |
4770 | | * start of the next. If defaulted (zero) the value will be |
4771 | | * nLineSpace * nBufYSize implying band sequential organization |
4772 | | * of the data buffer. |
4773 | | * |
4774 | | * @param papszOptions Driver specific control options in a string list or NULL. |
4775 | | * Consult driver documentation for options supported. |
4776 | | * |
4777 | | * @return handle representing the request. |
4778 | | */ |
4779 | | |
4780 | | GDALAsyncReaderH CPL_STDCALL GDALBeginAsyncReader( |
4781 | | GDALDatasetH hDS, int nXOff, int nYOff, int nXSize, int nYSize, void *pBuf, |
4782 | | int nBufXSize, int nBufYSize, GDALDataType eBufType, int nBandCount, |
4783 | | int *panBandMap, int nPixelSpace, int nLineSpace, int nBandSpace, |
4784 | | CSLConstList papszOptions) |
4785 | | |
4786 | 0 | { |
4787 | 0 | VALIDATE_POINTER1(hDS, "GDALDataset", nullptr); |
4788 | 0 | return static_cast<GDALAsyncReaderH>( |
4789 | 0 | GDALDataset::FromHandle(hDS)->BeginAsyncReader( |
4790 | 0 | nXOff, nYOff, nXSize, nYSize, pBuf, nBufXSize, nBufYSize, eBufType, |
4791 | 0 | nBandCount, panBandMap, nPixelSpace, nLineSpace, nBandSpace, |
4792 | 0 | const_cast<char **>(papszOptions))); |
4793 | 0 | } |
4794 | | |
4795 | | /************************************************************************/ |
4796 | | /* EndAsyncReader() */ |
4797 | | /************************************************************************/ |
4798 | | |
4799 | | /** |
4800 | | * End asynchronous request. |
4801 | | * |
4802 | | * This method destroys an asynchronous io request and recovers all |
4803 | | * resources associated with it. |
4804 | | * |
4805 | | * This method is the same as the C function GDALEndAsyncReader(). |
4806 | | * |
4807 | | * @param poARIO pointer to a GDALAsyncReader |
4808 | | */ |
4809 | | |
4810 | | void GDALDataset::EndAsyncReader(GDALAsyncReader *poARIO) |
4811 | 0 | { |
4812 | 0 | delete poARIO; |
4813 | 0 | } |
4814 | | |
4815 | | /************************************************************************/ |
4816 | | /* GDALEndAsyncReader() */ |
4817 | | /************************************************************************/ |
4818 | | |
4819 | | /** |
4820 | | * End asynchronous request. |
4821 | | * |
4822 | | * This method destroys an asynchronous io request and recovers all |
4823 | | * resources associated with it. |
4824 | | * |
4825 | | * This method is the same as the C++ method GDALDataset::EndAsyncReader(). |
4826 | | * |
4827 | | * @param hDS handle to the dataset object. |
4828 | | * @param hAsyncReaderH handle returned by GDALBeginAsyncReader() |
4829 | | */ |
4830 | | |
4831 | | void CPL_STDCALL GDALEndAsyncReader(GDALDatasetH hDS, |
4832 | | GDALAsyncReaderH hAsyncReaderH) |
4833 | 0 | { |
4834 | 0 | VALIDATE_POINTER0(hDS, "GDALDataset"); |
4835 | 0 | VALIDATE_POINTER0(hAsyncReaderH, "GDALAsyncReader"); |
4836 | 0 | GDALDataset::FromHandle(hDS)->EndAsyncReader( |
4837 | 0 | static_cast<GDALAsyncReader *>(hAsyncReaderH)); |
4838 | 0 | } |
4839 | | |
4840 | | /************************************************************************/ |
4841 | | /* CloseDependentDatasets() */ |
4842 | | /************************************************************************/ |
4843 | | |
4844 | | /** |
4845 | | * Drop references to any other datasets referenced by this dataset. |
4846 | | * |
4847 | | * This method should release any reference to other datasets (e.g. a VRT |
4848 | | * dataset to its sources), but not close the current dataset itself. |
4849 | | * |
4850 | | * If at least, one reference to a dependent dataset has been dropped, |
4851 | | * this method should return TRUE. Otherwise it *should* return FALSE. |
4852 | | * (Failure to return the proper value might result in infinite loop) |
4853 | | * |
4854 | | * This method can be called several times on a given dataset. After |
4855 | | * the first time, it should not do anything and return FALSE. |
4856 | | * |
4857 | | * The driver implementation may choose to destroy its raster bands, |
4858 | | * so be careful not to call any method on the raster bands afterwards. |
4859 | | * |
4860 | | * Basically the only safe action you can do after calling |
4861 | | * CloseDependentDatasets() is to call the destructor. |
4862 | | * |
4863 | | * Note: the only legitimate caller of CloseDependentDatasets() is |
4864 | | * GDALDriverManager::~GDALDriverManager() |
4865 | | * |
4866 | | * @return TRUE if at least one reference to another dataset has been dropped. |
4867 | | */ |
4868 | | int GDALDataset::CloseDependentDatasets() |
4869 | 0 | { |
4870 | 0 | return oOvManager.CloseDependentDatasets(); |
4871 | 0 | } |
4872 | | |
4873 | | /************************************************************************/ |
4874 | | /* ReportError() */ |
4875 | | /************************************************************************/ |
4876 | | |
4877 | | #ifndef DOXYGEN_XML |
4878 | | /** |
4879 | | * \brief Emits an error related to a dataset. |
4880 | | * |
4881 | | * This function is a wrapper for regular CPLError(). The only difference |
4882 | | * with CPLError() is that it prepends the error message with the dataset |
4883 | | * name. |
4884 | | * |
4885 | | * @param eErrClass one of CE_Warning, CE_Failure or CE_Fatal. |
4886 | | * @param err_no the error number (CPLE_*) from cpl_error.h. |
4887 | | * @param fmt a printf() style format string. Any additional arguments |
4888 | | * will be treated as arguments to fill in this format in a manner |
4889 | | * similar to printf(). |
4890 | | * |
4891 | | */ |
4892 | | |
4893 | | void GDALDataset::ReportError(CPLErr eErrClass, CPLErrorNum err_no, |
4894 | | const char *fmt, ...) const |
4895 | 0 | { |
4896 | 0 | va_list args; |
4897 | 0 | va_start(args, fmt); |
4898 | 0 | ReportErrorV(GetDescription(), eErrClass, err_no, fmt, args); |
4899 | 0 | va_end(args); |
4900 | 0 | } |
4901 | | |
4902 | | /** |
4903 | | * \brief Emits an error related to a dataset (static method) |
4904 | | * |
4905 | | * This function is a wrapper for regular CPLError(). The only difference |
4906 | | * with CPLError() is that it prepends the error message with the dataset |
4907 | | * name. |
4908 | | * |
4909 | | * @param pszDSName dataset name. |
4910 | | * @param eErrClass one of CE_Warning, CE_Failure or CE_Fatal. |
4911 | | * @param err_no the error number (CPLE_*) from cpl_error.h. |
4912 | | * @param fmt a printf() style format string. Any additional arguments |
4913 | | * will be treated as arguments to fill in this format in a manner |
4914 | | * similar to printf(). |
4915 | | * |
4916 | | * @since GDAL 3.2.0 |
4917 | | */ |
4918 | | |
4919 | | void GDALDataset::ReportError(const char *pszDSName, CPLErr eErrClass, |
4920 | | CPLErrorNum err_no, const char *fmt, ...) |
4921 | 0 | { |
4922 | 0 | va_list args; |
4923 | 0 | va_start(args, fmt); |
4924 | 0 | ReportErrorV(pszDSName, eErrClass, err_no, fmt, args); |
4925 | 0 | va_end(args); |
4926 | 0 | } |
4927 | | |
4928 | | void GDALDataset::ReportErrorV(const char *pszDSName, CPLErr eErrClass, |
4929 | | CPLErrorNum err_no, const char *fmt, |
4930 | | va_list args) |
4931 | 0 | { |
4932 | 0 | pszDSName = CPLGetFilename(pszDSName); |
4933 | 0 | if (pszDSName[0] != '\0') |
4934 | 0 | { |
4935 | 0 | CPLError(eErrClass, err_no, "%s", |
4936 | 0 | std::string(pszDSName) |
4937 | 0 | .append(": ") |
4938 | 0 | .append(CPLString().vPrintf(fmt, args)) |
4939 | 0 | .c_str()); |
4940 | 0 | } |
4941 | 0 | else |
4942 | 0 | { |
4943 | 0 | CPLErrorV(eErrClass, err_no, fmt, args); |
4944 | 0 | } |
4945 | 0 | } |
4946 | | #endif |
4947 | | |
4948 | | /************************************************************************/ |
4949 | | /* GetMetadata() */ |
4950 | | /************************************************************************/ |
4951 | | char **GDALDataset::GetMetadata(const char *pszDomain) |
4952 | 0 | { |
4953 | | #ifndef WITHOUT_DERIVED |
4954 | | if (pszDomain != nullptr && EQUAL(pszDomain, "DERIVED_SUBDATASETS")) |
4955 | | { |
4956 | | oDerivedMetadataList.Clear(); |
4957 | | |
4958 | | // First condition: at least one raster band. |
4959 | | if (GetRasterCount() > 0) |
4960 | | { |
4961 | | // Check if there is at least one complex band. |
4962 | | bool hasAComplexBand = false; |
4963 | | |
4964 | | for (int rasterId = 1; rasterId <= GetRasterCount(); ++rasterId) |
4965 | | { |
4966 | | if (GDALDataTypeIsComplex( |
4967 | | GetRasterBand(rasterId)->GetRasterDataType())) |
4968 | | { |
4969 | | hasAComplexBand = true; |
4970 | | break; |
4971 | | } |
4972 | | } |
4973 | | |
4974 | | unsigned int nbSupportedDerivedDS = 0; |
4975 | | const DerivedDatasetDescription *poDDSDesc = |
4976 | | GDALGetDerivedDatasetDescriptions(&nbSupportedDerivedDS); |
4977 | | |
4978 | | int nNumDataset = 1; |
4979 | | for (unsigned int derivedId = 0; derivedId < nbSupportedDerivedDS; |
4980 | | ++derivedId) |
4981 | | { |
4982 | | if (hasAComplexBand || |
4983 | | CPLString(poDDSDesc[derivedId].pszInputPixelType) != |
4984 | | "complex") |
4985 | | { |
4986 | | oDerivedMetadataList.SetNameValue( |
4987 | | CPLSPrintf("DERIVED_SUBDATASET_%d_NAME", nNumDataset), |
4988 | | CPLSPrintf("DERIVED_SUBDATASET:%s:%s", |
4989 | | poDDSDesc[derivedId].pszDatasetName, |
4990 | | GetDescription())); |
4991 | | |
4992 | | CPLString osDesc( |
4993 | | CPLSPrintf("%s from %s", |
4994 | | poDDSDesc[derivedId].pszDatasetDescription, |
4995 | | GetDescription())); |
4996 | | oDerivedMetadataList.SetNameValue( |
4997 | | CPLSPrintf("DERIVED_SUBDATASET_%d_DESC", nNumDataset), |
4998 | | osDesc.c_str()); |
4999 | | |
5000 | | nNumDataset++; |
5001 | | } |
5002 | | } |
5003 | | } |
5004 | | return oDerivedMetadataList.List(); |
5005 | | } |
5006 | | #endif |
5007 | |
|
5008 | 0 | return GDALMajorObject::GetMetadata(pszDomain); |
5009 | 0 | } |
5010 | | |
5011 | | // clang-format off |
5012 | | |
5013 | | /** |
5014 | | * \fn GDALDataset::SetMetadata( char ** papszMetadata, const char * pszDomain) |
5015 | | * \brief Set metadata. |
5016 | | * |
5017 | | * CAUTION: depending on the format, older values of the updated information |
5018 | | * might still be found in the file in a "ghost" state, even if no longer |
5019 | | * accessible through the GDAL API. This is for example the case of the GTiff |
5020 | | * format (this is not a exhaustive list) |
5021 | | * |
5022 | | * The C function GDALSetMetadata() does the same thing as this method. |
5023 | | * |
5024 | | * @param papszMetadata the metadata in name=value string list format to |
5025 | | * apply. |
5026 | | * @param pszDomain the domain of interest. Use "" or NULL for the default |
5027 | | * domain. |
5028 | | * @return CE_None on success, CE_Failure on failure and CE_Warning if the |
5029 | | * metadata has been accepted, but is likely not maintained persistently |
5030 | | * by the underlying object between sessions. |
5031 | | */ |
5032 | | |
5033 | | /** |
5034 | | * \fn GDALDataset::SetMetadataItem( const char * pszName, const char * pszValue, const char * pszDomain) |
5035 | | * \brief Set single metadata item. |
5036 | | * |
5037 | | * CAUTION: depending on the format, older values of the updated information |
5038 | | * might still be found in the file in a "ghost" state, even if no longer |
5039 | | * accessible through the GDAL API. This is for example the case of the GTiff |
5040 | | * format (this is not a exhaustive list) |
5041 | | * |
5042 | | * The C function GDALSetMetadataItem() does the same thing as this method. |
5043 | | * |
5044 | | * @param pszName the key for the metadata item to fetch. |
5045 | | * @param pszValue the value to assign to the key. |
5046 | | * @param pszDomain the domain to set within, use NULL for the default domain. |
5047 | | * |
5048 | | * @return CE_None on success, or an error code on failure. |
5049 | | */ |
5050 | | |
5051 | | // clang-format on |
5052 | | |
5053 | | /************************************************************************/ |
5054 | | /* GetMetadataDomainList() */ |
5055 | | /************************************************************************/ |
5056 | | |
5057 | | char **GDALDataset::GetMetadataDomainList() |
5058 | 0 | { |
5059 | 0 | char **currentDomainList = CSLDuplicate(oMDMD.GetDomainList()); |
5060 | | |
5061 | | // Ensure that we do not duplicate DERIVED domain. |
5062 | 0 | if (GetRasterCount() > 0 && |
5063 | 0 | CSLFindString(currentDomainList, "DERIVED_SUBDATASETS") == -1) |
5064 | 0 | { |
5065 | 0 | currentDomainList = |
5066 | 0 | CSLAddString(currentDomainList, "DERIVED_SUBDATASETS"); |
5067 | 0 | } |
5068 | 0 | return currentDomainList; |
5069 | 0 | } |
5070 | | |
5071 | | /************************************************************************/ |
5072 | | /* GetDriverName() */ |
5073 | | /************************************************************************/ |
5074 | | |
5075 | | /** Return driver name. |
5076 | | * @return driver name. |
5077 | | */ |
5078 | | const char *GDALDataset::GetDriverName() const |
5079 | 0 | { |
5080 | 0 | if (poDriver) |
5081 | 0 | return poDriver->GetDescription(); |
5082 | 0 | return ""; |
5083 | 0 | } |
5084 | | |
5085 | | /************************************************************************/ |
5086 | | /* GDALDatasetReleaseResultSet() */ |
5087 | | /************************************************************************/ |
5088 | | |
5089 | | /** |
5090 | | \brief Release results of ExecuteSQL(). |
5091 | | |
5092 | | This function should only be used to deallocate OGRLayers resulting from |
5093 | | an ExecuteSQL() call on the same GDALDataset. Failure to deallocate a |
5094 | | results set before destroying the GDALDataset may cause errors. |
5095 | | |
5096 | | This function is the same as the C++ method GDALDataset::ReleaseResultSet() |
5097 | | |
5098 | | |
5099 | | @param hDS the dataset handle. |
5100 | | @param hLayer the result of a previous ExecuteSQL() call. |
5101 | | |
5102 | | */ |
5103 | | void GDALDatasetReleaseResultSet(GDALDatasetH hDS, OGRLayerH hLayer) |
5104 | | |
5105 | 0 | { |
5106 | 0 | VALIDATE_POINTER0(hDS, "GDALDatasetReleaseResultSet"); |
5107 | | |
5108 | 0 | #ifdef OGRAPISPY_ENABLED |
5109 | 0 | if (bOGRAPISpyEnabled) |
5110 | 0 | OGRAPISpy_DS_ReleaseResultSet(hDS, hLayer); |
5111 | 0 | #endif |
5112 | |
|
5113 | 0 | GDALDataset::FromHandle(hDS)->ReleaseResultSet( |
5114 | 0 | OGRLayer::FromHandle(hLayer)); |
5115 | 0 | } |
5116 | | |
5117 | | /************************************************************************/ |
5118 | | /* GDALDatasetGetLayerCount() */ |
5119 | | /************************************************************************/ |
5120 | | |
5121 | | /** |
5122 | | \brief Get the number of layers in this dataset. |
5123 | | |
5124 | | This function is the same as the C++ method GDALDataset::GetLayerCount() |
5125 | | |
5126 | | |
5127 | | @param hDS the dataset handle. |
5128 | | @return layer count. |
5129 | | */ |
5130 | | |
5131 | | int GDALDatasetGetLayerCount(GDALDatasetH hDS) |
5132 | | |
5133 | 0 | { |
5134 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetH", 0); |
5135 | | |
5136 | 0 | #ifdef OGRAPISPY_ENABLED |
5137 | 0 | if (bOGRAPISpyEnabled) |
5138 | 0 | OGRAPISpy_DS_GetLayerCount(reinterpret_cast<GDALDatasetH>(hDS)); |
5139 | 0 | #endif |
5140 | |
|
5141 | 0 | return GDALDataset::FromHandle(hDS)->GetLayerCount(); |
5142 | 0 | } |
5143 | | |
5144 | | /************************************************************************/ |
5145 | | /* GDALDatasetGetLayer() */ |
5146 | | /************************************************************************/ |
5147 | | |
5148 | | /** |
5149 | | \brief Fetch a layer by index. |
5150 | | |
5151 | | The returned layer remains owned by the |
5152 | | GDALDataset and should not be deleted by the application. |
5153 | | |
5154 | | This function is the same as the C++ method GDALDataset::GetLayer() |
5155 | | |
5156 | | |
5157 | | @param hDS the dataset handle. |
5158 | | @param iLayer a layer number between 0 and GetLayerCount()-1. |
5159 | | |
5160 | | @return the layer, or NULL if iLayer is out of range or an error occurs. |
5161 | | */ |
5162 | | |
5163 | | OGRLayerH GDALDatasetGetLayer(GDALDatasetH hDS, int iLayer) |
5164 | | |
5165 | 0 | { |
5166 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetGetLayer", nullptr); |
5167 | | |
5168 | 0 | OGRLayerH hLayer = |
5169 | 0 | OGRLayer::ToHandle(GDALDataset::FromHandle(hDS)->GetLayer(iLayer)); |
5170 | |
|
5171 | 0 | #ifdef OGRAPISPY_ENABLED |
5172 | 0 | if (bOGRAPISpyEnabled) |
5173 | 0 | OGRAPISpy_DS_GetLayer(hDS, iLayer, hLayer); |
5174 | 0 | #endif |
5175 | |
|
5176 | 0 | return hLayer; |
5177 | 0 | } |
5178 | | |
5179 | | /************************************************************************/ |
5180 | | /* GDALDatasetGetLayerByName() */ |
5181 | | /************************************************************************/ |
5182 | | |
5183 | | /** |
5184 | | \brief Fetch a layer by name. |
5185 | | |
5186 | | The returned layer remains owned by the |
5187 | | GDALDataset and should not be deleted by the application. |
5188 | | |
5189 | | This function is the same as the C++ method GDALDataset::GetLayerByName() |
5190 | | |
5191 | | |
5192 | | @param hDS the dataset handle. |
5193 | | @param pszName the layer name of the layer to fetch. |
5194 | | |
5195 | | @return the layer, or NULL if Layer is not found or an error occurs. |
5196 | | */ |
5197 | | |
5198 | | OGRLayerH GDALDatasetGetLayerByName(GDALDatasetH hDS, const char *pszName) |
5199 | | |
5200 | 0 | { |
5201 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetGetLayerByName", nullptr); |
5202 | | |
5203 | 0 | OGRLayerH hLayer = OGRLayer::ToHandle( |
5204 | 0 | GDALDataset::FromHandle(hDS)->GetLayerByName(pszName)); |
5205 | |
|
5206 | 0 | #ifdef OGRAPISPY_ENABLED |
5207 | 0 | if (bOGRAPISpyEnabled) |
5208 | 0 | OGRAPISpy_DS_GetLayerByName(hDS, pszName, hLayer); |
5209 | 0 | #endif |
5210 | |
|
5211 | 0 | return hLayer; |
5212 | 0 | } |
5213 | | |
5214 | | /************************************************************************/ |
5215 | | /* GDALDatasetIsLayerPrivate() */ |
5216 | | /************************************************************************/ |
5217 | | |
5218 | | /** |
5219 | | \brief Returns true if the layer at the specified index is deemed a private or |
5220 | | system table, or an internal detail only. |
5221 | | |
5222 | | This function is the same as the C++ method GDALDataset::IsLayerPrivate() |
5223 | | |
5224 | | @since GDAL 3.4 |
5225 | | |
5226 | | @param hDS the dataset handle. |
5227 | | @param iLayer a layer number between 0 and GetLayerCount()-1. |
5228 | | |
5229 | | @return true if the layer is a private or system table. |
5230 | | */ |
5231 | | |
5232 | | int GDALDatasetIsLayerPrivate(GDALDatasetH hDS, int iLayer) |
5233 | | |
5234 | 0 | { |
5235 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetIsLayerPrivate", false); |
5236 | | |
5237 | 0 | const bool res = GDALDataset::FromHandle(hDS)->IsLayerPrivate(iLayer); |
5238 | |
|
5239 | 0 | return res ? 1 : 0; |
5240 | 0 | } |
5241 | | |
5242 | | /************************************************************************/ |
5243 | | /* GetLayerIndex() */ |
5244 | | /************************************************************************/ |
5245 | | |
5246 | | /** |
5247 | | \brief Returns the index of the layer specified by name. |
5248 | | |
5249 | | @since GDAL 3.12 |
5250 | | |
5251 | | @param pszName layer name (not NULL) |
5252 | | |
5253 | | @return an index >= 0, or -1 if not found. |
5254 | | */ |
5255 | | |
5256 | | int GDALDataset::GetLayerIndex(const char *pszName) const |
5257 | 0 | { |
5258 | 0 | const int nLayerCount = GetLayerCount(); |
5259 | 0 | int iMatch = -1; |
5260 | 0 | for (int i = 0; i < nLayerCount; ++i) |
5261 | 0 | { |
5262 | 0 | if (const auto poLayer = GetLayer(i)) |
5263 | 0 | { |
5264 | 0 | const char *pszLayerName = poLayer->GetDescription(); |
5265 | 0 | if (strcmp(pszName, pszLayerName) == 0) |
5266 | 0 | { |
5267 | 0 | iMatch = i; |
5268 | 0 | break; |
5269 | 0 | } |
5270 | 0 | else if (EQUAL(pszName, pszLayerName)) |
5271 | 0 | { |
5272 | 0 | iMatch = i; |
5273 | 0 | } |
5274 | 0 | } |
5275 | 0 | } |
5276 | 0 | return iMatch; |
5277 | 0 | } |
5278 | | |
5279 | | /************************************************************************/ |
5280 | | /* GDALDatasetDeleteLayer() */ |
5281 | | /************************************************************************/ |
5282 | | |
5283 | | /** |
5284 | | \brief Delete the indicated layer from the datasource. |
5285 | | |
5286 | | If this function is supported |
5287 | | the ODsCDeleteLayer capability will test TRUE on the GDALDataset. |
5288 | | |
5289 | | This method is the same as the C++ method GDALDataset::DeleteLayer(). |
5290 | | |
5291 | | |
5292 | | @param hDS the dataset handle. |
5293 | | @param iLayer the index of the layer to delete. |
5294 | | |
5295 | | @return OGRERR_NONE on success, or OGRERR_UNSUPPORTED_OPERATION if deleting |
5296 | | layers is not supported for this datasource. |
5297 | | |
5298 | | */ |
5299 | | OGRErr GDALDatasetDeleteLayer(GDALDatasetH hDS, int iLayer) |
5300 | | |
5301 | 0 | { |
5302 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetH", OGRERR_INVALID_HANDLE); |
5303 | | |
5304 | 0 | #ifdef OGRAPISPY_ENABLED |
5305 | 0 | if (bOGRAPISpyEnabled) |
5306 | 0 | OGRAPISpy_DS_DeleteLayer(hDS, iLayer); |
5307 | 0 | #endif |
5308 | |
|
5309 | 0 | return GDALDataset::FromHandle(hDS)->DeleteLayer(iLayer); |
5310 | 0 | } |
5311 | | |
5312 | | /************************************************************************/ |
5313 | | /* CreateLayer() */ |
5314 | | /************************************************************************/ |
5315 | | |
5316 | | /** |
5317 | | \brief This method attempts to create a new layer on the dataset with the |
5318 | | indicated name, coordinate system, geometry type. |
5319 | | |
5320 | | The papszOptions argument |
5321 | | can be used to control driver specific creation options. These options are |
5322 | | normally documented in the format specific documentation. |
5323 | | That function will try to validate the creation option list passed to the |
5324 | | driver with the GDALValidateCreationOptions() method. This check can be |
5325 | | disabled by defining the configuration option GDAL_VALIDATE_CREATION_OPTIONS set |
5326 | | to NO. |
5327 | | |
5328 | | Drivers should extend the ICreateLayer() method and not |
5329 | | CreateLayer(). CreateLayer() adds validation of layer creation options, before |
5330 | | delegating the actual work to ICreateLayer(). |
5331 | | |
5332 | | This method is the same as the C function GDALDatasetCreateLayer() and the |
5333 | | deprecated OGR_DS_CreateLayer(). |
5334 | | |
5335 | | Example: |
5336 | | |
5337 | | \code{.cpp} |
5338 | | #include "gdal.h" |
5339 | | #include "cpl_string.h" |
5340 | | |
5341 | | ... |
5342 | | |
5343 | | OGRLayer *poLayer; |
5344 | | char **papszOptions; |
5345 | | |
5346 | | if( !poDS->TestCapability( ODsCCreateLayer ) ) |
5347 | | { |
5348 | | ... |
5349 | | } |
5350 | | |
5351 | | papszOptions = CSLSetNameValue( papszOptions, "DIM", "2" ); |
5352 | | poLayer = poDS->CreateLayer( "NewLayer", nullptr, wkbUnknown, |
5353 | | papszOptions ); |
5354 | | CSLDestroy( papszOptions ); |
5355 | | |
5356 | | if( poLayer == NULL ) |
5357 | | { |
5358 | | ... |
5359 | | } |
5360 | | \endcode |
5361 | | |
5362 | | @param pszName the name for the new layer. This should ideally not |
5363 | | match any existing layer on the datasource. |
5364 | | @param poSpatialRef the coordinate system to use for the new layer, or NULL if |
5365 | | no coordinate system is available. |
5366 | | @param eGType the geometry type for the layer. Use wkbUnknown if there |
5367 | | are no constraints on the types geometry to be written. |
5368 | | @param papszOptions a StringList of name=value options. Options are driver |
5369 | | specific. |
5370 | | |
5371 | | @return NULL is returned on failure, or a new OGRLayer handle on success. |
5372 | | |
5373 | | */ |
5374 | | |
5375 | | OGRLayer *GDALDataset::CreateLayer(const char *pszName, |
5376 | | const OGRSpatialReference *poSpatialRef, |
5377 | | OGRwkbGeometryType eGType, |
5378 | | CSLConstList papszOptions) |
5379 | | |
5380 | 0 | { |
5381 | 0 | if (eGType == wkbNone) |
5382 | 0 | { |
5383 | 0 | return CreateLayer(pszName, nullptr, papszOptions); |
5384 | 0 | } |
5385 | 0 | else |
5386 | 0 | { |
5387 | 0 | OGRGeomFieldDefn oGeomFieldDefn("", eGType); |
5388 | 0 | oGeomFieldDefn.SetSpatialRef(poSpatialRef); |
5389 | 0 | return CreateLayer(pszName, &oGeomFieldDefn, papszOptions); |
5390 | 0 | } |
5391 | 0 | } |
5392 | | |
5393 | | /** |
5394 | | \brief This method attempts to create a new layer on the dataset with the |
5395 | | indicated name and geometry field definition. |
5396 | | |
5397 | | When poGeomFieldDefn is not null, most drivers should honor |
5398 | | poGeomFieldDefn->GetType() and poGeomFieldDefn->GetSpatialRef(). |
5399 | | Drivers that honor poGeomFieldDefn->GetCoordinatePrecision() will declare the |
5400 | | GDAL_DCAP_HONOR_GEOM_COORDINATE_PRECISION capability. Drivers may honor |
5401 | | poGeomFieldDefn->GetNameRef() and poGeomFieldDefn->IsNullable(), but there are |
5402 | | very few currently. |
5403 | | |
5404 | | Note that even if a geometry coordinate precision is set and a driver honors the |
5405 | | GDAL_DCAP_HONOR_GEOM_COORDINATE_PRECISION capability, geometries passed to |
5406 | | OGRLayer::CreateFeature() and OGRLayer::SetFeature() are assumed to be compatible |
5407 | | with the coordinate precision. That is they are assumed to be valid once their |
5408 | | coordinates are rounded to it. If it might not be the case, the user may set |
5409 | | the OGR_APPLY_GEOM_SET_PRECISION configuration option before calling CreateFeature() |
5410 | | or SetFeature() to force the OGRGeometry::SetPrecision() method to be called on |
5411 | | the passed geometries. |
5412 | | |
5413 | | The papszOptions argument |
5414 | | can be used to control driver specific creation options. These options are |
5415 | | normally documented in the format specific documentation. |
5416 | | This function will try to validate the creation option list passed to the |
5417 | | driver with the GDALValidateCreationOptions() method. This check can be |
5418 | | disabled by defining the configuration option GDAL_VALIDATE_CREATION_OPTIONS set |
5419 | | to NO. |
5420 | | |
5421 | | Drivers should extend the ICreateLayer() method and not |
5422 | | CreateLayer(). CreateLayer() adds validation of layer creation options, before |
5423 | | delegating the actual work to ICreateLayer(). |
5424 | | |
5425 | | This method is the same as the C function GDALDatasetCreateLayerFromGeomFieldDefn(). |
5426 | | |
5427 | | @param pszName the name for the new layer. This should ideally not |
5428 | | match any existing layer on the datasource. |
5429 | | @param poGeomFieldDefn the geometry field definition to use for the new layer, |
5430 | | or NULL if there is no geometry field. |
5431 | | @param papszOptions a StringList of name=value options. Options are driver |
5432 | | specific. |
5433 | | |
5434 | | @return NULL is returned on failure, or a new OGRLayer handle on success. |
5435 | | @since 3.9 |
5436 | | |
5437 | | */ |
5438 | | |
5439 | | OGRLayer *GDALDataset::CreateLayer(const char *pszName, |
5440 | | const OGRGeomFieldDefn *poGeomFieldDefn, |
5441 | | CSLConstList papszOptions) |
5442 | | |
5443 | 0 | { |
5444 | 0 | if (CPLTestBool( |
5445 | 0 | CPLGetConfigOption("GDAL_VALIDATE_CREATION_OPTIONS", "YES"))) |
5446 | 0 | { |
5447 | 0 | ValidateLayerCreationOptions(papszOptions); |
5448 | 0 | } |
5449 | |
|
5450 | 0 | OGRLayer *poLayer; |
5451 | 0 | if (poGeomFieldDefn) |
5452 | 0 | { |
5453 | 0 | OGRGeomFieldDefn oGeomFieldDefn(poGeomFieldDefn); |
5454 | 0 | if (OGR_GT_IsNonLinear(poGeomFieldDefn->GetType()) && |
5455 | 0 | !TestCapability(ODsCCurveGeometries)) |
5456 | 0 | { |
5457 | 0 | oGeomFieldDefn.SetType( |
5458 | 0 | OGR_GT_GetLinear(poGeomFieldDefn->GetType())); |
5459 | 0 | } |
5460 | |
|
5461 | 0 | poLayer = ICreateLayer(pszName, &oGeomFieldDefn, papszOptions); |
5462 | 0 | } |
5463 | 0 | else |
5464 | 0 | { |
5465 | 0 | poLayer = ICreateLayer(pszName, nullptr, papszOptions); |
5466 | 0 | } |
5467 | 0 | #ifdef DEBUG |
5468 | 0 | if (poLayer != nullptr && OGR_GT_IsNonLinear(poLayer->GetGeomType()) && |
5469 | 0 | !poLayer->TestCapability(OLCCurveGeometries)) |
5470 | 0 | { |
5471 | 0 | CPLError(CE_Warning, CPLE_AppDefined, |
5472 | 0 | "Inconsistent driver: Layer geometry type is non-linear, but " |
5473 | 0 | "TestCapability(OLCCurveGeometries) returns FALSE."); |
5474 | 0 | } |
5475 | 0 | #endif |
5476 | |
|
5477 | 0 | return poLayer; |
5478 | 0 | } |
5479 | | |
5480 | | //! @cond Doxygen_Suppress |
5481 | | |
5482 | | // Technical override to avoid ambiguous choice between the old and new |
5483 | | // new CreateLayer() signatures. |
5484 | | OGRLayer *GDALDataset::CreateLayer(const char *pszName) |
5485 | 0 | { |
5486 | 0 | OGRGeomFieldDefn oGeomFieldDefn("", wkbUnknown); |
5487 | 0 | return CreateLayer(pszName, &oGeomFieldDefn, nullptr); |
5488 | 0 | } |
5489 | | |
5490 | | // Technical override to avoid ambiguous choice between the old and new |
5491 | | // new CreateLayer() signatures. |
5492 | | OGRLayer *GDALDataset::CreateLayer(const char *pszName, std::nullptr_t) |
5493 | 0 | { |
5494 | 0 | OGRGeomFieldDefn oGeomFieldDefn("", wkbUnknown); |
5495 | 0 | return CreateLayer(pszName, &oGeomFieldDefn, nullptr); |
5496 | 0 | } |
5497 | | |
5498 | | //!@endcond |
5499 | | |
5500 | | /************************************************************************/ |
5501 | | /* GDALDatasetCreateLayer() */ |
5502 | | /************************************************************************/ |
5503 | | |
5504 | | /** |
5505 | | \brief This function attempts to create a new layer on the dataset with the |
5506 | | indicated name, coordinate system, geometry type. |
5507 | | |
5508 | | The papszOptions argument can be used to control driver specific creation |
5509 | | options. These options are normally documented in the format specific |
5510 | | documentation. |
5511 | | |
5512 | | This method is the same as the C++ method GDALDataset::CreateLayer(). |
5513 | | |
5514 | | Example: |
5515 | | |
5516 | | \code{.c} |
5517 | | #include "gdal.h" |
5518 | | #include "cpl_string.h" |
5519 | | |
5520 | | ... |
5521 | | |
5522 | | OGRLayerH hLayer; |
5523 | | char **papszOptions; |
5524 | | |
5525 | | if( !GDALDatasetTestCapability( hDS, ODsCCreateLayer ) ) |
5526 | | { |
5527 | | ... |
5528 | | } |
5529 | | |
5530 | | papszOptions = CSLSetNameValue( papszOptions, "DIM", "2" ); |
5531 | | hLayer = GDALDatasetCreateLayer( hDS, "NewLayer", NULL, wkbUnknown, |
5532 | | papszOptions ); |
5533 | | CSLDestroy( papszOptions ); |
5534 | | |
5535 | | if( hLayer == NULL ) |
5536 | | { |
5537 | | ... |
5538 | | } |
5539 | | \endcode |
5540 | | |
5541 | | |
5542 | | @param hDS the dataset handle |
5543 | | @param pszName the name for the new layer. This should ideally not |
5544 | | match any existing layer on the datasource. |
5545 | | @param hSpatialRef the coordinate system to use for the new layer, or NULL if |
5546 | | no coordinate system is available. |
5547 | | @param eGType the geometry type for the layer. Use wkbUnknown if there |
5548 | | are no constraints on the types geometry to be written. |
5549 | | @param papszOptions a StringList of name=value options. Options are driver |
5550 | | specific. |
5551 | | |
5552 | | @return NULL is returned on failure, or a new OGRLayer handle on success. |
5553 | | |
5554 | | */ |
5555 | | |
5556 | | OGRLayerH GDALDatasetCreateLayer(GDALDatasetH hDS, const char *pszName, |
5557 | | OGRSpatialReferenceH hSpatialRef, |
5558 | | OGRwkbGeometryType eGType, |
5559 | | CSLConstList papszOptions) |
5560 | | |
5561 | 0 | { |
5562 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetCreateLayer", nullptr); |
5563 | | |
5564 | 0 | if (pszName == nullptr) |
5565 | 0 | { |
5566 | 0 | CPLError(CE_Failure, CPLE_ObjectNull, |
5567 | 0 | "Name was NULL in GDALDatasetCreateLayer"); |
5568 | 0 | return nullptr; |
5569 | 0 | } |
5570 | | |
5571 | 0 | OGRLayerH hLayer = |
5572 | 0 | OGRLayer::ToHandle(GDALDataset::FromHandle(hDS)->CreateLayer( |
5573 | 0 | pszName, OGRSpatialReference::FromHandle(hSpatialRef), eGType, |
5574 | 0 | const_cast<char **>(papszOptions))); |
5575 | |
|
5576 | 0 | #ifdef OGRAPISPY_ENABLED |
5577 | 0 | if (bOGRAPISpyEnabled) |
5578 | 0 | OGRAPISpy_DS_CreateLayer(hDS, pszName, hSpatialRef, eGType, |
5579 | 0 | const_cast<char **>(papszOptions), hLayer); |
5580 | 0 | #endif |
5581 | |
|
5582 | 0 | return hLayer; |
5583 | 0 | } |
5584 | | |
5585 | | /************************************************************************/ |
5586 | | /* GDALDatasetCreateLayerFromGeomFieldDefn() */ |
5587 | | /************************************************************************/ |
5588 | | |
5589 | | /** |
5590 | | \brief This function attempts to create a new layer on the dataset with the |
5591 | | indicated name and geometry field. |
5592 | | |
5593 | | When poGeomFieldDefn is not null, most drivers should honor |
5594 | | poGeomFieldDefn->GetType() and poGeomFieldDefn->GetSpatialRef(). |
5595 | | Drivers that honor poGeomFieldDefn->GetCoordinatePrecision() will declare the |
5596 | | GDAL_DCAP_HONOR_GEOM_COORDINATE_PRECISION capability. Drivers may honor |
5597 | | poGeomFieldDefn->GetNameRef() and poGeomFieldDefn->IsNullable(), but there are |
5598 | | very few currently. |
5599 | | |
5600 | | Note that even if a geometry coordinate precision is set and a driver honors the |
5601 | | GDAL_DCAP_HONOR_GEOM_COORDINATE_PRECISION capability, geometries passed to |
5602 | | OGRLayer::CreateFeature() and OGRLayer::SetFeature() are assumed to be compatible |
5603 | | with the coordinate precision. That is they are assumed to be valid once their |
5604 | | coordinates are rounded to it. If it might not be the case, the user may set |
5605 | | the OGR_APPLY_GEOM_SET_PRECISION configuration option before calling CreateFeature() |
5606 | | or SetFeature() to force the OGRGeometry::SetPrecision() method to be called on |
5607 | | the passed geometries. |
5608 | | |
5609 | | The papszOptions argument can be used to control driver specific creation |
5610 | | options. These options are normally documented in the format specific |
5611 | | documentation. |
5612 | | |
5613 | | This method is the same as the C++ method GDALDataset::CreateLayer(). |
5614 | | |
5615 | | @param hDS the dataset handle |
5616 | | @param pszName the name for the new layer. This should ideally not |
5617 | | match any existing layer on the datasource. |
5618 | | @param hGeomFieldDefn the geometry field definition. May be NULL to indicate |
5619 | | a non-spatial file (or if adding geometry fields later with OGR_L_CreateGeomField() |
5620 | | for drivers supporting that interface). |
5621 | | @param papszOptions a StringList of name=value options. Options are driver |
5622 | | specific. |
5623 | | |
5624 | | @return NULL is returned on failure, or a new OGRLayer handle on success. |
5625 | | |
5626 | | @since GDAL 3.9 |
5627 | | |
5628 | | */ |
5629 | | |
5630 | | OGRLayerH |
5631 | | GDALDatasetCreateLayerFromGeomFieldDefn(GDALDatasetH hDS, const char *pszName, |
5632 | | OGRGeomFieldDefnH hGeomFieldDefn, |
5633 | | CSLConstList papszOptions) |
5634 | | |
5635 | 0 | { |
5636 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetCreateLayerFromGeomFieldDefn", nullptr); |
5637 | | |
5638 | 0 | if (!pszName) |
5639 | 0 | { |
5640 | 0 | CPLError(CE_Failure, CPLE_ObjectNull, |
5641 | 0 | "Name was NULL in GDALDatasetCreateLayerFromGeomFieldDefn"); |
5642 | 0 | return nullptr; |
5643 | 0 | } |
5644 | | |
5645 | 0 | OGRLayerH hLayer = |
5646 | 0 | OGRLayer::ToHandle(GDALDataset::FromHandle(hDS)->CreateLayer( |
5647 | 0 | pszName, OGRGeomFieldDefn::FromHandle(hGeomFieldDefn), |
5648 | 0 | papszOptions)); |
5649 | 0 | return hLayer; |
5650 | 0 | } |
5651 | | |
5652 | | /************************************************************************/ |
5653 | | /* GDALDatasetCopyLayer() */ |
5654 | | /************************************************************************/ |
5655 | | |
5656 | | /** |
5657 | | \brief Duplicate an existing layer. |
5658 | | |
5659 | | This function creates a new layer, duplicate the field definitions of the |
5660 | | source layer and then duplicate each features of the source layer. |
5661 | | The papszOptions argument |
5662 | | can be used to control driver specific creation options. These options are |
5663 | | normally documented in the format specific documentation. |
5664 | | The source layer may come from another dataset. |
5665 | | |
5666 | | This method is the same as the C++ method GDALDataset::CopyLayer() |
5667 | | |
5668 | | |
5669 | | @param hDS the dataset handle. |
5670 | | @param hSrcLayer source layer. |
5671 | | @param pszNewName the name of the layer to create. |
5672 | | @param papszOptions a StringList of name=value options. Options are driver |
5673 | | specific. |
5674 | | |
5675 | | @return a handle to the layer, or NULL if an error occurs. |
5676 | | */ |
5677 | | OGRLayerH GDALDatasetCopyLayer(GDALDatasetH hDS, OGRLayerH hSrcLayer, |
5678 | | const char *pszNewName, |
5679 | | CSLConstList papszOptions) |
5680 | | |
5681 | 0 | { |
5682 | 0 | VALIDATE_POINTER1(hDS, "OGR_DS_CopyGDALDatasetCopyLayerLayer", nullptr); |
5683 | 0 | VALIDATE_POINTER1(hSrcLayer, "GDALDatasetCopyLayer", nullptr); |
5684 | 0 | VALIDATE_POINTER1(pszNewName, "GDALDatasetCopyLayer", nullptr); |
5685 | | |
5686 | 0 | return OGRLayer::ToHandle(GDALDataset::FromHandle(hDS)->CopyLayer( |
5687 | 0 | OGRLayer::FromHandle(hSrcLayer), pszNewName, |
5688 | 0 | const_cast<char **>(papszOptions))); |
5689 | 0 | } |
5690 | | |
5691 | | /************************************************************************/ |
5692 | | /* GDALDatasetExecuteSQL() */ |
5693 | | /************************************************************************/ |
5694 | | |
5695 | | /** |
5696 | | \brief Execute an SQL statement against the data store. |
5697 | | |
5698 | | The result of an SQL query is either NULL for statements that are in error, |
5699 | | or that have no results set, or an OGRLayer pointer representing a results |
5700 | | set from the query. Note that this OGRLayer is in addition to the layers |
5701 | | in the data store and must be destroyed with |
5702 | | ReleaseResultSet() before the dataset is closed |
5703 | | (destroyed). |
5704 | | |
5705 | | This method is the same as the C++ method GDALDataset::ExecuteSQL() |
5706 | | |
5707 | | For more information on the SQL dialect supported internally by OGR |
5708 | | review the <a href="https://gdal.org/user/ogr_sql_dialect.html">OGR SQL</a> |
5709 | | document. Some drivers (i.e. Oracle and PostGIS) pass the SQL directly through |
5710 | | to the underlying RDBMS. |
5711 | | |
5712 | | Starting with OGR 1.10, the <a |
5713 | | href="https://gdal.org/user/sql_sqlite_dialect.html">SQLITE dialect</a> can |
5714 | | also be used. |
5715 | | |
5716 | | |
5717 | | @param hDS the dataset handle. |
5718 | | @param pszStatement the SQL statement to execute. |
5719 | | @param hSpatialFilter geometry which represents a spatial filter. Can be NULL. |
5720 | | |
5721 | | @param pszDialect allows control of the statement dialect. If set to NULL, the |
5722 | | OGR SQL engine will be used, except for RDBMS drivers that will use their |
5723 | | dedicated SQL engine, unless OGRSQL is explicitly passed as the |
5724 | | dialect. Starting with OGR 1.10, the SQLITE dialect can also be used. |
5725 | | |
5726 | | @return an OGRLayer containing the results of the query. Deallocate with |
5727 | | GDALDatasetReleaseResultSet(). |
5728 | | |
5729 | | */ |
5730 | | |
5731 | | OGRLayerH GDALDatasetExecuteSQL(GDALDatasetH hDS, const char *pszStatement, |
5732 | | OGRGeometryH hSpatialFilter, |
5733 | | const char *pszDialect) |
5734 | | |
5735 | 0 | { |
5736 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetExecuteSQL", nullptr); |
5737 | | |
5738 | 0 | OGRLayerH hLayer = |
5739 | 0 | OGRLayer::ToHandle(GDALDataset::FromHandle(hDS)->ExecuteSQL( |
5740 | 0 | pszStatement, OGRGeometry::FromHandle(hSpatialFilter), pszDialect)); |
5741 | |
|
5742 | 0 | #ifdef OGRAPISPY_ENABLED |
5743 | 0 | if (bOGRAPISpyEnabled) |
5744 | 0 | OGRAPISpy_DS_ExecuteSQL(hDS, pszStatement, hSpatialFilter, pszDialect, |
5745 | 0 | hLayer); |
5746 | 0 | #endif |
5747 | |
|
5748 | 0 | return hLayer; |
5749 | 0 | } |
5750 | | |
5751 | | /************************************************************************/ |
5752 | | /* GDALDatasetAbortSQL() */ |
5753 | | /************************************************************************/ |
5754 | | |
5755 | | /** |
5756 | | \brief Abort any SQL statement running in the data store. |
5757 | | |
5758 | | This function can be safely called from any thread (pending that the dataset |
5759 | | object is still alive). Driver implementations will make sure that it can be |
5760 | | called in a thread-safe way. |
5761 | | |
5762 | | This might not be implemented by all drivers. At time of writing, only SQLite, |
5763 | | GPKG and PG drivers implement it |
5764 | | |
5765 | | This method is the same as the C++ method GDALDataset::AbortSQL() |
5766 | | |
5767 | | @since GDAL 3.2.0 |
5768 | | |
5769 | | @param hDS the dataset handle. |
5770 | | |
5771 | | @return OGRERR_NONE on success, or OGRERR_UNSUPPORTED_OPERATION if AbortSQL |
5772 | | is not supported for this datasource. . |
5773 | | |
5774 | | */ |
5775 | | |
5776 | | OGRErr GDALDatasetAbortSQL(GDALDatasetH hDS) |
5777 | | |
5778 | 0 | { |
5779 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetAbortSQL", OGRERR_FAILURE); |
5780 | 0 | return GDALDataset::FromHandle(hDS)->AbortSQL(); |
5781 | 0 | } |
5782 | | |
5783 | | /************************************************************************/ |
5784 | | /* GDALDatasetGetStyleTable() */ |
5785 | | /************************************************************************/ |
5786 | | |
5787 | | /** |
5788 | | \brief Returns dataset style table. |
5789 | | |
5790 | | This function is the same as the C++ method GDALDataset::GetStyleTable() |
5791 | | |
5792 | | |
5793 | | @param hDS the dataset handle |
5794 | | @return handle to a style table which should not be modified or freed by the |
5795 | | caller. |
5796 | | */ |
5797 | | |
5798 | | OGRStyleTableH GDALDatasetGetStyleTable(GDALDatasetH hDS) |
5799 | | |
5800 | 0 | { |
5801 | 0 | VALIDATE_POINTER1(hDS, "OGR_DS_GetStyleTable", nullptr); |
5802 | | |
5803 | 0 | return reinterpret_cast<OGRStyleTableH>( |
5804 | 0 | GDALDataset::FromHandle(hDS)->GetStyleTable()); |
5805 | 0 | } |
5806 | | |
5807 | | /************************************************************************/ |
5808 | | /* GDALDatasetSetStyleTableDirectly() */ |
5809 | | /************************************************************************/ |
5810 | | |
5811 | | /** |
5812 | | \brief Set dataset style table. |
5813 | | |
5814 | | This function operate exactly as GDALDatasetSetStyleTable() except that it |
5815 | | assumes ownership of the passed table. |
5816 | | |
5817 | | This function is the same as the C++ method |
5818 | | GDALDataset::SetStyleTableDirectly() |
5819 | | |
5820 | | |
5821 | | @param hDS the dataset handle |
5822 | | @param hStyleTable style table handle to set |
5823 | | |
5824 | | */ |
5825 | | |
5826 | | void GDALDatasetSetStyleTableDirectly(GDALDatasetH hDS, |
5827 | | OGRStyleTableH hStyleTable) |
5828 | | |
5829 | 0 | { |
5830 | 0 | VALIDATE_POINTER0(hDS, "OGR_DS_SetStyleTableDirectly"); |
5831 | | |
5832 | 0 | GDALDataset::FromHandle(hDS)->SetStyleTableDirectly( |
5833 | 0 | reinterpret_cast<OGRStyleTable *>(hStyleTable)); |
5834 | 0 | } |
5835 | | |
5836 | | /************************************************************************/ |
5837 | | /* GDALDatasetSetStyleTable() */ |
5838 | | /************************************************************************/ |
5839 | | |
5840 | | /** |
5841 | | \brief Set dataset style table. |
5842 | | |
5843 | | This function operate exactly as GDALDatasetSetStyleTableDirectly() except that |
5844 | | it assumes ownership of the passed table. |
5845 | | |
5846 | | This function is the same as the C++ method GDALDataset::SetStyleTable() |
5847 | | |
5848 | | |
5849 | | @param hDS the dataset handle |
5850 | | @param hStyleTable style table handle to set |
5851 | | |
5852 | | */ |
5853 | | |
5854 | | void GDALDatasetSetStyleTable(GDALDatasetH hDS, OGRStyleTableH hStyleTable) |
5855 | | |
5856 | 0 | { |
5857 | 0 | VALIDATE_POINTER0(hDS, "OGR_DS_SetStyleTable"); |
5858 | 0 | VALIDATE_POINTER0(hStyleTable, "OGR_DS_SetStyleTable"); |
5859 | | |
5860 | 0 | GDALDataset::FromHandle(hDS)->SetStyleTable( |
5861 | 0 | reinterpret_cast<OGRStyleTable *>(hStyleTable)); |
5862 | 0 | } |
5863 | | |
5864 | | /************************************************************************/ |
5865 | | /* ValidateLayerCreationOptions() */ |
5866 | | /************************************************************************/ |
5867 | | |
5868 | | //! @cond Doxygen_Suppress |
5869 | | int GDALDataset::ValidateLayerCreationOptions(const char *const *papszLCO) |
5870 | 0 | { |
5871 | 0 | const char *pszOptionList = |
5872 | 0 | GetMetadataItem(GDAL_DS_LAYER_CREATIONOPTIONLIST); |
5873 | 0 | if (pszOptionList == nullptr && poDriver != nullptr) |
5874 | 0 | { |
5875 | 0 | pszOptionList = |
5876 | 0 | poDriver->GetMetadataItem(GDAL_DS_LAYER_CREATIONOPTIONLIST); |
5877 | 0 | } |
5878 | 0 | CPLString osDataset; |
5879 | 0 | osDataset.Printf("dataset %s", GetDescription()); |
5880 | 0 | return GDALValidateOptions(pszOptionList, papszLCO, "layer creation option", |
5881 | 0 | osDataset); |
5882 | 0 | } |
5883 | | |
5884 | | //! @endcond |
5885 | | |
5886 | | /************************************************************************/ |
5887 | | /* Release() */ |
5888 | | /************************************************************************/ |
5889 | | |
5890 | | /** |
5891 | | \brief Drop a reference to this dataset, and if the reference count drops to one |
5892 | | close (destroy) the dataset. |
5893 | | |
5894 | | This method is the same as the C function OGRReleaseDataSource(). |
5895 | | |
5896 | | @deprecated. Use GDALClose() instead |
5897 | | |
5898 | | @return OGRERR_NONE on success or an error code. |
5899 | | */ |
5900 | | |
5901 | | OGRErr GDALDataset::Release() |
5902 | | |
5903 | 0 | { |
5904 | 0 | ReleaseRef(); |
5905 | 0 | return OGRERR_NONE; |
5906 | 0 | } |
5907 | | |
5908 | | /************************************************************************/ |
5909 | | /* GetRefCount() */ |
5910 | | /************************************************************************/ |
5911 | | |
5912 | | /** |
5913 | | \brief Fetch reference count. |
5914 | | |
5915 | | This method is the same as the C function OGR_DS_GetRefCount(). |
5916 | | |
5917 | | @return the current reference count for the datasource object itself. |
5918 | | */ |
5919 | | |
5920 | | int GDALDataset::GetRefCount() const |
5921 | 0 | { |
5922 | 0 | return nRefCount; |
5923 | 0 | } |
5924 | | |
5925 | | /************************************************************************/ |
5926 | | /* GetSummaryRefCount() */ |
5927 | | /************************************************************************/ |
5928 | | |
5929 | | /** |
5930 | | \brief Fetch reference count of datasource and all owned layers. |
5931 | | |
5932 | | This method is the same as the C function OGR_DS_GetSummaryRefCount(). |
5933 | | |
5934 | | @deprecated |
5935 | | |
5936 | | @return the current summary reference count for the datasource and its layers. |
5937 | | */ |
5938 | | |
5939 | | int GDALDataset::GetSummaryRefCount() const |
5940 | | |
5941 | 0 | { |
5942 | 0 | CPLMutexHolderD(m_poPrivate ? &(m_poPrivate->hMutex) : nullptr); |
5943 | 0 | int nSummaryCount = nRefCount; |
5944 | 0 | GDALDataset *poUseThis = const_cast<GDALDataset *>(this); |
5945 | |
|
5946 | 0 | for (int iLayer = 0; iLayer < poUseThis->GetLayerCount(); ++iLayer) |
5947 | 0 | nSummaryCount += poUseThis->GetLayer(iLayer)->GetRefCount(); |
5948 | |
|
5949 | 0 | return nSummaryCount; |
5950 | 0 | } |
5951 | | |
5952 | | /************************************************************************/ |
5953 | | /* ICreateLayer() */ |
5954 | | /************************************************************************/ |
5955 | | |
5956 | | /** |
5957 | | \brief This method attempts to create a new layer on the dataset with the |
5958 | | indicated name, coordinate system, geometry type. |
5959 | | |
5960 | | This method is reserved to implementation by drivers. |
5961 | | |
5962 | | The papszOptions argument can be used to control driver specific creation |
5963 | | options. These options are normally documented in the format specific |
5964 | | documentation. |
5965 | | |
5966 | | @param pszName the name for the new layer. This should ideally not |
5967 | | match any existing layer on the datasource. |
5968 | | @param poGeomFieldDefn the geometry field definition to use for the new layer, |
5969 | | or NULL if there is no geometry field. |
5970 | | @param papszOptions a StringList of name=value options. Options are driver |
5971 | | specific. |
5972 | | |
5973 | | @return NULL is returned on failure, or a new OGRLayer handle on success. |
5974 | | |
5975 | | */ |
5976 | | |
5977 | | OGRLayer * |
5978 | | GDALDataset::ICreateLayer(CPL_UNUSED const char *pszName, |
5979 | | CPL_UNUSED const OGRGeomFieldDefn *poGeomFieldDefn, |
5980 | | CPL_UNUSED CSLConstList papszOptions) |
5981 | | |
5982 | 0 | { |
5983 | 0 | CPLError(CE_Failure, CPLE_NotSupported, |
5984 | 0 | "CreateLayer() not supported by this dataset."); |
5985 | |
|
5986 | 0 | return nullptr; |
5987 | 0 | } |
5988 | | |
5989 | | /************************************************************************/ |
5990 | | /* CopyLayer() */ |
5991 | | /************************************************************************/ |
5992 | | |
5993 | | /** |
5994 | | \brief Duplicate an existing layer. |
5995 | | |
5996 | | This method creates a new layer, duplicate the field definitions of the |
5997 | | source layer and then duplicate each features of the source layer. |
5998 | | The papszOptions argument |
5999 | | can be used to control driver specific creation options. These options are |
6000 | | normally documented in the format specific documentation. |
6001 | | The source layer may come from another dataset. |
6002 | | |
6003 | | This method is the same as the C function GDALDatasetCopyLayer() and the |
6004 | | deprecated OGR_DS_CopyLayer(). |
6005 | | |
6006 | | @param poSrcLayer source layer. |
6007 | | @param pszNewName the name of the layer to create. |
6008 | | @param papszOptions a StringList of name=value options. Options are driver |
6009 | | specific. There is a common option to set output layer |
6010 | | spatial reference: DST_SRSWKT. The option should be in |
6011 | | WKT format. Starting with GDAL 3.7, the common option |
6012 | | COPY_MD can be set to NO to prevent the default copying |
6013 | | of the metadata from the source layer to the target layer. |
6014 | | |
6015 | | @return a handle to the layer, or NULL if an error occurs. |
6016 | | */ |
6017 | | |
6018 | | OGRLayer *GDALDataset::CopyLayer(OGRLayer *poSrcLayer, const char *pszNewName, |
6019 | | char **papszOptions) |
6020 | | |
6021 | 0 | { |
6022 | | /* -------------------------------------------------------------------- */ |
6023 | | /* Create the layer. */ |
6024 | | /* -------------------------------------------------------------------- */ |
6025 | 0 | if (!TestCapability(ODsCCreateLayer)) |
6026 | 0 | { |
6027 | 0 | CPLError(CE_Failure, CPLE_NotSupported, |
6028 | 0 | "This datasource does not support creation of layers."); |
6029 | 0 | return nullptr; |
6030 | 0 | } |
6031 | | |
6032 | 0 | const char *pszSRSWKT = CSLFetchNameValue(papszOptions, "DST_SRSWKT"); |
6033 | 0 | OGRSpatialReference oDstSpaRef(pszSRSWKT); |
6034 | 0 | oDstSpaRef.SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER); |
6035 | 0 | OGRFeatureDefn *poSrcDefn = poSrcLayer->GetLayerDefn(); |
6036 | 0 | OGRLayer *poDstLayer = nullptr; |
6037 | |
|
6038 | 0 | CPLStringList aosCleanedUpOptions(CSLDuplicate(papszOptions)); |
6039 | 0 | aosCleanedUpOptions.SetNameValue("DST_SRSWKT", nullptr); |
6040 | 0 | aosCleanedUpOptions.SetNameValue("COPY_MD", nullptr); |
6041 | |
|
6042 | 0 | CPLErrorReset(); |
6043 | 0 | const int nSrcGeomFieldCount = poSrcDefn->GetGeomFieldCount(); |
6044 | 0 | if (nSrcGeomFieldCount == 1) |
6045 | 0 | { |
6046 | 0 | OGRGeomFieldDefn oGeomFieldDefn(poSrcDefn->GetGeomFieldDefn(0)); |
6047 | 0 | if (pszSRSWKT) |
6048 | 0 | oGeomFieldDefn.SetSpatialRef(&oDstSpaRef); |
6049 | 0 | poDstLayer = ICreateLayer(pszNewName, &oGeomFieldDefn, |
6050 | 0 | aosCleanedUpOptions.List()); |
6051 | 0 | } |
6052 | 0 | else |
6053 | 0 | { |
6054 | 0 | poDstLayer = |
6055 | 0 | ICreateLayer(pszNewName, nullptr, aosCleanedUpOptions.List()); |
6056 | 0 | } |
6057 | |
|
6058 | 0 | if (poDstLayer == nullptr) |
6059 | 0 | return nullptr; |
6060 | | |
6061 | 0 | if (CPLTestBool(CSLFetchNameValueDef(papszOptions, "COPY_MD", "YES"))) |
6062 | 0 | { |
6063 | 0 | char **papszMD = poSrcLayer->GetMetadata(); |
6064 | 0 | if (papszMD) |
6065 | 0 | poDstLayer->SetMetadata(papszMD); |
6066 | 0 | } |
6067 | | |
6068 | | /* -------------------------------------------------------------------- */ |
6069 | | /* Add fields. Default to copy all fields, and make sure to */ |
6070 | | /* establish a mapping between indices, rather than names, in */ |
6071 | | /* case the target datasource has altered it (e.g. Shapefile */ |
6072 | | /* limited to 10 char field names). */ |
6073 | | /* -------------------------------------------------------------------- */ |
6074 | 0 | const int nSrcFieldCount = poSrcDefn->GetFieldCount(); |
6075 | | |
6076 | | // Initialize the index-to-index map to -1's. |
6077 | 0 | std::vector<int> anMap(nSrcFieldCount, -1); |
6078 | | |
6079 | | // Caution: At the time of writing, the MapInfo driver |
6080 | | // returns NULL until a field has been added. |
6081 | 0 | OGRFeatureDefn *poDstFDefn = poDstLayer->GetLayerDefn(); |
6082 | 0 | int nDstFieldCount = poDstFDefn ? poDstFDefn->GetFieldCount() : 0; |
6083 | 0 | for (int iField = 0; iField < nSrcFieldCount; ++iField) |
6084 | 0 | { |
6085 | 0 | OGRFieldDefn *poSrcFieldDefn = poSrcDefn->GetFieldDefn(iField); |
6086 | 0 | OGRFieldDefn oFieldDefn(poSrcFieldDefn); |
6087 | | |
6088 | | // The field may have been already created at layer creation. |
6089 | 0 | int iDstField = -1; |
6090 | 0 | if (poDstFDefn) |
6091 | 0 | iDstField = poDstFDefn->GetFieldIndex(oFieldDefn.GetNameRef()); |
6092 | 0 | if (iDstField >= 0) |
6093 | 0 | { |
6094 | 0 | anMap[iField] = iDstField; |
6095 | 0 | } |
6096 | 0 | else if (poDstLayer->CreateField(&oFieldDefn) == OGRERR_NONE) |
6097 | 0 | { |
6098 | | // Now that we've created a field, GetLayerDefn() won't return NULL. |
6099 | 0 | if (poDstFDefn == nullptr) |
6100 | 0 | poDstFDefn = poDstLayer->GetLayerDefn(); |
6101 | | |
6102 | | // Sanity check: if it fails, the driver is buggy. |
6103 | 0 | if (poDstFDefn != nullptr && |
6104 | 0 | poDstFDefn->GetFieldCount() != nDstFieldCount + 1) |
6105 | 0 | { |
6106 | 0 | CPLError(CE_Warning, CPLE_AppDefined, |
6107 | 0 | "The output driver has claimed to have added the %s " |
6108 | 0 | "field, but it did not!", |
6109 | 0 | oFieldDefn.GetNameRef()); |
6110 | 0 | } |
6111 | 0 | else |
6112 | 0 | { |
6113 | 0 | anMap[iField] = nDstFieldCount; |
6114 | 0 | ++nDstFieldCount; |
6115 | 0 | } |
6116 | 0 | } |
6117 | 0 | } |
6118 | | |
6119 | | /* -------------------------------------------------------------------- */ |
6120 | 0 | std::unique_ptr<OGRCoordinateTransformation> poCT; |
6121 | 0 | const OGRSpatialReference *sourceSRS = poSrcLayer->GetSpatialRef(); |
6122 | 0 | if (sourceSRS != nullptr && pszSRSWKT != nullptr && !oDstSpaRef.IsEmpty() && |
6123 | 0 | sourceSRS->IsSame(&oDstSpaRef) == FALSE) |
6124 | 0 | { |
6125 | 0 | poCT.reset(OGRCreateCoordinateTransformation(sourceSRS, &oDstSpaRef)); |
6126 | 0 | if (nullptr == poCT) |
6127 | 0 | { |
6128 | 0 | CPLError(CE_Failure, CPLE_NotSupported, |
6129 | 0 | "This input/output spatial reference is not supported."); |
6130 | 0 | return nullptr; |
6131 | 0 | } |
6132 | 0 | } |
6133 | | /* -------------------------------------------------------------------- */ |
6134 | | /* Create geometry fields. */ |
6135 | | /* -------------------------------------------------------------------- */ |
6136 | 0 | if (nSrcGeomFieldCount > 1 && |
6137 | 0 | TestCapability(ODsCCreateGeomFieldAfterCreateLayer)) |
6138 | 0 | { |
6139 | |
|
6140 | 0 | for (int iField = 0; iField < nSrcGeomFieldCount; ++iField) |
6141 | 0 | { |
6142 | 0 | if (nullptr == pszSRSWKT) |
6143 | 0 | { |
6144 | 0 | poDstLayer->CreateGeomField( |
6145 | 0 | poSrcDefn->GetGeomFieldDefn(iField)); |
6146 | 0 | } |
6147 | 0 | else |
6148 | 0 | { |
6149 | 0 | OGRGeomFieldDefn *pDstGeomFieldDefn = |
6150 | 0 | poSrcDefn->GetGeomFieldDefn(iField); |
6151 | 0 | pDstGeomFieldDefn->SetSpatialRef(&oDstSpaRef); |
6152 | 0 | poDstLayer->CreateGeomField(pDstGeomFieldDefn); |
6153 | 0 | } |
6154 | 0 | } |
6155 | 0 | } |
6156 | | |
6157 | | /* -------------------------------------------------------------------- */ |
6158 | | /* Check if the destination layer supports transactions and set a */ |
6159 | | /* default number of features in a single transaction. */ |
6160 | | /* -------------------------------------------------------------------- */ |
6161 | 0 | const int nGroupTransactions = |
6162 | 0 | poDstLayer->TestCapability(OLCTransactions) ? 128 : 0; |
6163 | | |
6164 | | /* -------------------------------------------------------------------- */ |
6165 | | /* Transfer features. */ |
6166 | | /* -------------------------------------------------------------------- */ |
6167 | 0 | poSrcLayer->ResetReading(); |
6168 | |
|
6169 | 0 | if (nGroupTransactions <= 0) |
6170 | 0 | { |
6171 | 0 | while (true) |
6172 | 0 | { |
6173 | 0 | auto poFeature = |
6174 | 0 | std::unique_ptr<OGRFeature>(poSrcLayer->GetNextFeature()); |
6175 | |
|
6176 | 0 | if (poFeature == nullptr) |
6177 | 0 | break; |
6178 | | |
6179 | 0 | CPLErrorReset(); |
6180 | 0 | auto poDstFeature = |
6181 | 0 | std::make_unique<OGRFeature>(poDstLayer->GetLayerDefn()); |
6182 | |
|
6183 | 0 | if (poDstFeature->SetFrom(poFeature.get(), anMap.data(), TRUE) != |
6184 | 0 | OGRERR_NONE) |
6185 | 0 | { |
6186 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6187 | 0 | "Unable to translate feature " CPL_FRMT_GIB |
6188 | 0 | " from layer %s.", |
6189 | 0 | poFeature->GetFID(), poSrcDefn->GetName()); |
6190 | 0 | return poDstLayer; |
6191 | 0 | } |
6192 | | |
6193 | 0 | if (nullptr != poCT) |
6194 | 0 | { |
6195 | 0 | for (int iField = 0; iField < nSrcGeomFieldCount; ++iField) |
6196 | 0 | { |
6197 | 0 | OGRGeometry *pGeom = poDstFeature->GetGeomFieldRef(iField); |
6198 | 0 | if (nullptr == pGeom) |
6199 | 0 | continue; |
6200 | | |
6201 | 0 | const OGRErr eErr = pGeom->transform(poCT.get()); |
6202 | 0 | if (eErr == OGRERR_NONE) |
6203 | 0 | continue; |
6204 | | |
6205 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6206 | 0 | "Unable to transform geometry " CPL_FRMT_GIB |
6207 | 0 | " from layer %s.", |
6208 | 0 | poFeature->GetFID(), poSrcDefn->GetName()); |
6209 | 0 | return poDstLayer; |
6210 | 0 | } |
6211 | 0 | } |
6212 | | |
6213 | 0 | poDstFeature->SetFID(poFeature->GetFID()); |
6214 | |
|
6215 | 0 | CPLErrorReset(); |
6216 | 0 | if (poDstLayer->CreateFeature(poDstFeature.get()) != OGRERR_NONE) |
6217 | 0 | { |
6218 | 0 | return poDstLayer; |
6219 | 0 | } |
6220 | 0 | } |
6221 | 0 | } |
6222 | 0 | else |
6223 | 0 | { |
6224 | 0 | std::vector<std::unique_ptr<OGRFeature>> apoDstFeatures; |
6225 | 0 | try |
6226 | 0 | { |
6227 | 0 | apoDstFeatures.resize(nGroupTransactions); |
6228 | 0 | } |
6229 | 0 | catch (const std::exception &e) |
6230 | 0 | { |
6231 | 0 | CPLError(CE_Failure, CPLE_OutOfMemory, "%s", e.what()); |
6232 | 0 | return poDstLayer; |
6233 | 0 | } |
6234 | 0 | bool bStopTransfer = false; |
6235 | 0 | while (!bStopTransfer) |
6236 | 0 | { |
6237 | | /* -------------------------------------------------------------------- |
6238 | | */ |
6239 | | /* Fill the array with features. */ |
6240 | | /* -------------------------------------------------------------------- |
6241 | | */ |
6242 | | // Number of features in the temporary array. |
6243 | 0 | int nFeatCount = 0; // Used after for. |
6244 | 0 | for (nFeatCount = 0; nFeatCount < nGroupTransactions; ++nFeatCount) |
6245 | 0 | { |
6246 | 0 | auto poFeature = |
6247 | 0 | std::unique_ptr<OGRFeature>(poSrcLayer->GetNextFeature()); |
6248 | |
|
6249 | 0 | if (poFeature == nullptr) |
6250 | 0 | { |
6251 | 0 | bStopTransfer = true; |
6252 | 0 | break; |
6253 | 0 | } |
6254 | | |
6255 | 0 | CPLErrorReset(); |
6256 | 0 | apoDstFeatures[nFeatCount] = |
6257 | 0 | std::make_unique<OGRFeature>(poDstLayer->GetLayerDefn()); |
6258 | |
|
6259 | 0 | if (apoDstFeatures[nFeatCount]->SetFrom( |
6260 | 0 | poFeature.get(), anMap.data(), TRUE) != OGRERR_NONE) |
6261 | 0 | { |
6262 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6263 | 0 | "Unable to translate feature " CPL_FRMT_GIB |
6264 | 0 | " from layer %s.", |
6265 | 0 | poFeature->GetFID(), poSrcDefn->GetName()); |
6266 | 0 | bStopTransfer = true; |
6267 | 0 | poFeature.reset(); |
6268 | 0 | break; |
6269 | 0 | } |
6270 | | |
6271 | 0 | if (nullptr != poCT) |
6272 | 0 | { |
6273 | 0 | for (int iField = 0; iField < nSrcGeomFieldCount; ++iField) |
6274 | 0 | { |
6275 | 0 | OGRGeometry *pGeom = |
6276 | 0 | apoDstFeatures[nFeatCount]->GetGeomFieldRef(iField); |
6277 | 0 | if (nullptr == pGeom) |
6278 | 0 | continue; |
6279 | | |
6280 | 0 | const OGRErr eErr = pGeom->transform(poCT.get()); |
6281 | 0 | if (eErr == OGRERR_NONE) |
6282 | 0 | continue; |
6283 | | |
6284 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6285 | 0 | "Unable to transform geometry " CPL_FRMT_GIB |
6286 | 0 | " from layer %s.", |
6287 | 0 | poFeature->GetFID(), poSrcDefn->GetName()); |
6288 | 0 | bStopTransfer = true; |
6289 | 0 | poFeature.reset(); |
6290 | 0 | break; |
6291 | 0 | } |
6292 | 0 | } |
6293 | |
|
6294 | 0 | if (poFeature) |
6295 | 0 | { |
6296 | 0 | apoDstFeatures[nFeatCount]->SetFID(poFeature->GetFID()); |
6297 | 0 | } |
6298 | 0 | } |
6299 | |
|
6300 | 0 | CPLErrorReset(); |
6301 | 0 | bool bStopTransaction = false; |
6302 | 0 | while (!bStopTransaction) |
6303 | 0 | { |
6304 | 0 | bStopTransaction = true; |
6305 | 0 | if (poDstLayer->StartTransaction() != OGRERR_NONE) |
6306 | 0 | break; |
6307 | 0 | for (int i = 0; i < nFeatCount; ++i) |
6308 | 0 | { |
6309 | 0 | if (poDstLayer->CreateFeature(apoDstFeatures[i].get()) != |
6310 | 0 | OGRERR_NONE) |
6311 | 0 | { |
6312 | 0 | bStopTransfer = true; |
6313 | 0 | bStopTransaction = false; |
6314 | 0 | break; |
6315 | 0 | } |
6316 | 0 | apoDstFeatures[i].reset(); |
6317 | 0 | } |
6318 | 0 | if (bStopTransaction) |
6319 | 0 | { |
6320 | 0 | if (poDstLayer->CommitTransaction() != OGRERR_NONE) |
6321 | 0 | break; |
6322 | 0 | } |
6323 | 0 | else |
6324 | 0 | { |
6325 | 0 | poDstLayer->RollbackTransaction(); |
6326 | 0 | } |
6327 | 0 | } |
6328 | 0 | } |
6329 | 0 | } |
6330 | | |
6331 | 0 | return poDstLayer; |
6332 | 0 | } |
6333 | | |
6334 | | /************************************************************************/ |
6335 | | /* DeleteLayer() */ |
6336 | | /************************************************************************/ |
6337 | | |
6338 | | /** |
6339 | | \fn GDALDataset::DeleteLayer(int) |
6340 | | \brief Delete the indicated layer from the datasource. |
6341 | | |
6342 | | If this method is supported |
6343 | | the ODsCDeleteLayer capability will test TRUE on the GDALDataset. |
6344 | | |
6345 | | This method is the same as the C function GDALDatasetDeleteLayer() and the |
6346 | | deprecated OGR_DS_DeleteLayer(). |
6347 | | |
6348 | | @param iLayer the index of the layer to delete. |
6349 | | |
6350 | | @return OGRERR_NONE on success, or OGRERR_UNSUPPORTED_OPERATION if deleting |
6351 | | layers is not supported for this datasource. |
6352 | | |
6353 | | */ |
6354 | | |
6355 | | OGRErr GDALDataset::DeleteLayer(CPL_UNUSED int iLayer) |
6356 | | |
6357 | 0 | { |
6358 | 0 | CPLError(CE_Failure, CPLE_NotSupported, |
6359 | 0 | "DeleteLayer() not supported by this dataset."); |
6360 | |
|
6361 | 0 | return OGRERR_UNSUPPORTED_OPERATION; |
6362 | 0 | } |
6363 | | |
6364 | | /************************************************************************/ |
6365 | | /* GetLayerByName() */ |
6366 | | /************************************************************************/ |
6367 | | |
6368 | | /** |
6369 | | \brief Fetch a layer by name. |
6370 | | |
6371 | | The returned layer remains owned by the |
6372 | | GDALDataset and should not be deleted by the application. |
6373 | | |
6374 | | This method is the same as the C function GDALDatasetGetLayerByName() and the |
6375 | | deprecated OGR_DS_GetLayerByName(). |
6376 | | |
6377 | | @param pszName the layer name of the layer to fetch. |
6378 | | |
6379 | | @return the layer, or NULL if Layer is not found or an error occurs. |
6380 | | */ |
6381 | | |
6382 | | OGRLayer *GDALDataset::GetLayerByName(const char *pszName) |
6383 | | |
6384 | 0 | { |
6385 | 0 | CPLMutexHolderD(m_poPrivate ? &(m_poPrivate->hMutex) : nullptr); |
6386 | |
|
6387 | 0 | if (!pszName) |
6388 | 0 | return nullptr; |
6389 | | |
6390 | | // First a case sensitive check. |
6391 | 0 | for (int i = 0; i < GetLayerCount(); ++i) |
6392 | 0 | { |
6393 | 0 | OGRLayer *poLayer = GetLayer(i); |
6394 | |
|
6395 | 0 | if (strcmp(pszName, poLayer->GetName()) == 0) |
6396 | 0 | return poLayer; |
6397 | 0 | } |
6398 | | |
6399 | | // Then case insensitive. |
6400 | 0 | for (int i = 0; i < GetLayerCount(); ++i) |
6401 | 0 | { |
6402 | 0 | OGRLayer *poLayer = GetLayer(i); |
6403 | |
|
6404 | 0 | if (EQUAL(pszName, poLayer->GetName())) |
6405 | 0 | return poLayer; |
6406 | 0 | } |
6407 | | |
6408 | 0 | return nullptr; |
6409 | 0 | } |
6410 | | |
6411 | | //! @cond Doxygen_Suppress |
6412 | | /************************************************************************/ |
6413 | | /* ProcessSQLCreateIndex() */ |
6414 | | /* */ |
6415 | | /* The correct syntax for creating an index in our dialect of */ |
6416 | | /* SQL is: */ |
6417 | | /* */ |
6418 | | /* CREATE INDEX ON <layername> USING <columnname> */ |
6419 | | /************************************************************************/ |
6420 | | |
6421 | | OGRErr GDALDataset::ProcessSQLCreateIndex(const char *pszSQLCommand) |
6422 | | |
6423 | 0 | { |
6424 | 0 | char **papszTokens = CSLTokenizeString(pszSQLCommand); |
6425 | | |
6426 | | /* -------------------------------------------------------------------- */ |
6427 | | /* Do some general syntax checking. */ |
6428 | | /* -------------------------------------------------------------------- */ |
6429 | 0 | if (CSLCount(papszTokens) != 6 || !EQUAL(papszTokens[0], "CREATE") || |
6430 | 0 | !EQUAL(papszTokens[1], "INDEX") || !EQUAL(papszTokens[2], "ON") || |
6431 | 0 | !EQUAL(papszTokens[4], "USING")) |
6432 | 0 | { |
6433 | 0 | CSLDestroy(papszTokens); |
6434 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6435 | 0 | "Syntax error in CREATE INDEX command.\n" |
6436 | 0 | "Was '%s'\n" |
6437 | 0 | "Should be of form 'CREATE INDEX ON <table> USING <field>'", |
6438 | 0 | pszSQLCommand); |
6439 | 0 | return OGRERR_FAILURE; |
6440 | 0 | } |
6441 | | |
6442 | | /* -------------------------------------------------------------------- */ |
6443 | | /* Find the named layer. */ |
6444 | | /* -------------------------------------------------------------------- */ |
6445 | 0 | OGRLayer *poLayer = GetLayerByName(papszTokens[3]); |
6446 | 0 | if (poLayer == nullptr) |
6447 | 0 | { |
6448 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6449 | 0 | "CREATE INDEX ON failed, no such layer as `%s'.", |
6450 | 0 | papszTokens[3]); |
6451 | 0 | CSLDestroy(papszTokens); |
6452 | 0 | return OGRERR_FAILURE; |
6453 | 0 | } |
6454 | | |
6455 | | /* -------------------------------------------------------------------- */ |
6456 | | /* Does this layer even support attribute indexes? */ |
6457 | | /* -------------------------------------------------------------------- */ |
6458 | 0 | if (poLayer->GetIndex() == nullptr) |
6459 | 0 | { |
6460 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6461 | 0 | "CREATE INDEX ON not supported by this driver."); |
6462 | 0 | CSLDestroy(papszTokens); |
6463 | 0 | return OGRERR_FAILURE; |
6464 | 0 | } |
6465 | | |
6466 | | /* -------------------------------------------------------------------- */ |
6467 | | /* Find the named field. */ |
6468 | | /* -------------------------------------------------------------------- */ |
6469 | 0 | int i = poLayer->GetLayerDefn()->GetFieldIndex(papszTokens[5]); |
6470 | |
|
6471 | 0 | CSLDestroy(papszTokens); |
6472 | |
|
6473 | 0 | if (i >= poLayer->GetLayerDefn()->GetFieldCount()) |
6474 | 0 | { |
6475 | 0 | CPLError(CE_Failure, CPLE_AppDefined, "`%s' failed, field not found.", |
6476 | 0 | pszSQLCommand); |
6477 | 0 | return OGRERR_FAILURE; |
6478 | 0 | } |
6479 | | |
6480 | | /* -------------------------------------------------------------------- */ |
6481 | | /* Attempt to create the index. */ |
6482 | | /* -------------------------------------------------------------------- */ |
6483 | 0 | OGRErr eErr = poLayer->GetIndex()->CreateIndex(i); |
6484 | 0 | if (eErr == OGRERR_NONE) |
6485 | 0 | { |
6486 | 0 | eErr = poLayer->GetIndex()->IndexAllFeatures(i); |
6487 | 0 | } |
6488 | 0 | else |
6489 | 0 | { |
6490 | 0 | if (strlen(CPLGetLastErrorMsg()) == 0) |
6491 | 0 | CPLError(CE_Failure, CPLE_AppDefined, "Cannot '%s'", pszSQLCommand); |
6492 | 0 | } |
6493 | |
|
6494 | 0 | return eErr; |
6495 | 0 | } |
6496 | | |
6497 | | /************************************************************************/ |
6498 | | /* ProcessSQLDropIndex() */ |
6499 | | /* */ |
6500 | | /* The correct syntax for dropping one or more indexes in */ |
6501 | | /* the OGR SQL dialect is: */ |
6502 | | /* */ |
6503 | | /* DROP INDEX ON <layername> [USING <columnname>] */ |
6504 | | /************************************************************************/ |
6505 | | |
6506 | | OGRErr GDALDataset::ProcessSQLDropIndex(const char *pszSQLCommand) |
6507 | | |
6508 | 0 | { |
6509 | 0 | char **papszTokens = CSLTokenizeString(pszSQLCommand); |
6510 | | |
6511 | | /* -------------------------------------------------------------------- */ |
6512 | | /* Do some general syntax checking. */ |
6513 | | /* -------------------------------------------------------------------- */ |
6514 | 0 | if ((CSLCount(papszTokens) != 4 && CSLCount(papszTokens) != 6) || |
6515 | 0 | !EQUAL(papszTokens[0], "DROP") || !EQUAL(papszTokens[1], "INDEX") || |
6516 | 0 | !EQUAL(papszTokens[2], "ON") || |
6517 | 0 | (CSLCount(papszTokens) == 6 && !EQUAL(papszTokens[4], "USING"))) |
6518 | 0 | { |
6519 | 0 | CSLDestroy(papszTokens); |
6520 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6521 | 0 | "Syntax error in DROP INDEX command.\n" |
6522 | 0 | "Was '%s'\n" |
6523 | 0 | "Should be of form 'DROP INDEX ON <table> [USING <field>]'", |
6524 | 0 | pszSQLCommand); |
6525 | 0 | return OGRERR_FAILURE; |
6526 | 0 | } |
6527 | | |
6528 | | /* -------------------------------------------------------------------- */ |
6529 | | /* Find the named layer. */ |
6530 | | /* -------------------------------------------------------------------- */ |
6531 | 0 | OGRLayer *poLayer = GetLayerByName(papszTokens[3]); |
6532 | 0 | if (poLayer == nullptr) |
6533 | 0 | { |
6534 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6535 | 0 | "DROP INDEX ON failed, no such layer as `%s'.", |
6536 | 0 | papszTokens[3]); |
6537 | 0 | CSLDestroy(papszTokens); |
6538 | 0 | return OGRERR_FAILURE; |
6539 | 0 | } |
6540 | | |
6541 | | /* -------------------------------------------------------------------- */ |
6542 | | /* Does this layer even support attribute indexes? */ |
6543 | | /* -------------------------------------------------------------------- */ |
6544 | 0 | if (poLayer->GetIndex() == nullptr) |
6545 | 0 | { |
6546 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6547 | 0 | "Indexes not supported by this driver."); |
6548 | 0 | CSLDestroy(papszTokens); |
6549 | 0 | return OGRERR_FAILURE; |
6550 | 0 | } |
6551 | | |
6552 | | /* -------------------------------------------------------------------- */ |
6553 | | /* If we were not given a field name, drop all indexes. */ |
6554 | | /* -------------------------------------------------------------------- */ |
6555 | 0 | if (CSLCount(papszTokens) == 4) |
6556 | 0 | { |
6557 | 0 | for (int i = 0; i < poLayer->GetLayerDefn()->GetFieldCount(); ++i) |
6558 | 0 | { |
6559 | 0 | OGRAttrIndex *poAttrIndex; |
6560 | |
|
6561 | 0 | poAttrIndex = poLayer->GetIndex()->GetFieldIndex(i); |
6562 | 0 | if (poAttrIndex != nullptr) |
6563 | 0 | { |
6564 | 0 | const OGRErr eErr = poLayer->GetIndex()->DropIndex(i); |
6565 | 0 | if (eErr != OGRERR_NONE) |
6566 | 0 | { |
6567 | 0 | CSLDestroy(papszTokens); |
6568 | 0 | return eErr; |
6569 | 0 | } |
6570 | 0 | } |
6571 | 0 | } |
6572 | | |
6573 | 0 | CSLDestroy(papszTokens); |
6574 | 0 | return OGRERR_NONE; |
6575 | 0 | } |
6576 | | |
6577 | | /* -------------------------------------------------------------------- */ |
6578 | | /* Find the named field. */ |
6579 | | /* -------------------------------------------------------------------- */ |
6580 | 0 | int i = poLayer->GetLayerDefn()->GetFieldIndex(papszTokens[5]); |
6581 | 0 | CSLDestroy(papszTokens); |
6582 | |
|
6583 | 0 | if (i >= poLayer->GetLayerDefn()->GetFieldCount()) |
6584 | 0 | { |
6585 | 0 | CPLError(CE_Failure, CPLE_AppDefined, "`%s' failed, field not found.", |
6586 | 0 | pszSQLCommand); |
6587 | 0 | return OGRERR_FAILURE; |
6588 | 0 | } |
6589 | | |
6590 | | /* -------------------------------------------------------------------- */ |
6591 | | /* Attempt to drop the index. */ |
6592 | | /* -------------------------------------------------------------------- */ |
6593 | 0 | const OGRErr eErr = poLayer->GetIndex()->DropIndex(i); |
6594 | |
|
6595 | 0 | return eErr; |
6596 | 0 | } |
6597 | | |
6598 | | /************************************************************************/ |
6599 | | /* ProcessSQLDropTable() */ |
6600 | | /* */ |
6601 | | /* The correct syntax for dropping a table (layer) in the OGR SQL */ |
6602 | | /* dialect is: */ |
6603 | | /* */ |
6604 | | /* DROP TABLE <layername> */ |
6605 | | /************************************************************************/ |
6606 | | |
6607 | | OGRErr GDALDataset::ProcessSQLDropTable(const char *pszSQLCommand) |
6608 | | |
6609 | 0 | { |
6610 | 0 | char **papszTokens = CSLTokenizeString(pszSQLCommand); |
6611 | | |
6612 | | /* -------------------------------------------------------------------- */ |
6613 | | /* Do some general syntax checking. */ |
6614 | | /* -------------------------------------------------------------------- */ |
6615 | 0 | if (CSLCount(papszTokens) != 3 || !EQUAL(papszTokens[0], "DROP") || |
6616 | 0 | !EQUAL(papszTokens[1], "TABLE")) |
6617 | 0 | { |
6618 | 0 | CSLDestroy(papszTokens); |
6619 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6620 | 0 | "Syntax error in DROP TABLE command.\n" |
6621 | 0 | "Was '%s'\n" |
6622 | 0 | "Should be of form 'DROP TABLE <table>'", |
6623 | 0 | pszSQLCommand); |
6624 | 0 | return OGRERR_FAILURE; |
6625 | 0 | } |
6626 | | |
6627 | | /* -------------------------------------------------------------------- */ |
6628 | | /* Find the named layer. */ |
6629 | | /* -------------------------------------------------------------------- */ |
6630 | 0 | OGRLayer *poLayer = nullptr; |
6631 | |
|
6632 | 0 | int i = 0; // Used after for. |
6633 | 0 | for (; i < GetLayerCount(); ++i) |
6634 | 0 | { |
6635 | 0 | poLayer = GetLayer(i); |
6636 | |
|
6637 | 0 | if (poLayer != nullptr && EQUAL(poLayer->GetName(), papszTokens[2])) |
6638 | 0 | break; |
6639 | 0 | poLayer = nullptr; |
6640 | 0 | } |
6641 | |
|
6642 | 0 | if (poLayer == nullptr) |
6643 | 0 | { |
6644 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6645 | 0 | "DROP TABLE failed, no such layer as `%s'.", papszTokens[2]); |
6646 | 0 | CSLDestroy(papszTokens); |
6647 | 0 | return OGRERR_FAILURE; |
6648 | 0 | } |
6649 | | |
6650 | 0 | CSLDestroy(papszTokens); |
6651 | | |
6652 | | /* -------------------------------------------------------------------- */ |
6653 | | /* Delete it. */ |
6654 | | /* -------------------------------------------------------------------- */ |
6655 | |
|
6656 | 0 | return DeleteLayer(i); |
6657 | 0 | } |
6658 | | |
6659 | | //! @endcond |
6660 | | |
6661 | | /************************************************************************/ |
6662 | | /* GDALDatasetParseSQLType() */ |
6663 | | /************************************************************************/ |
6664 | | |
6665 | | /* All arguments will be altered */ |
6666 | | static OGRFieldType GDALDatasetParseSQLType(char *pszType, int &nWidth, |
6667 | | int &nPrecision) |
6668 | 0 | { |
6669 | 0 | char *pszParenthesis = strchr(pszType, '('); |
6670 | 0 | if (pszParenthesis) |
6671 | 0 | { |
6672 | 0 | nWidth = atoi(pszParenthesis + 1); |
6673 | 0 | *pszParenthesis = '\0'; |
6674 | 0 | char *pszComma = strchr(pszParenthesis + 1, ','); |
6675 | 0 | if (pszComma) |
6676 | 0 | nPrecision = atoi(pszComma + 1); |
6677 | 0 | } |
6678 | |
|
6679 | 0 | OGRFieldType eType = OFTString; |
6680 | 0 | if (EQUAL(pszType, "INTEGER")) |
6681 | 0 | eType = OFTInteger; |
6682 | 0 | else if (EQUAL(pszType, "INTEGER[]")) |
6683 | 0 | eType = OFTIntegerList; |
6684 | 0 | else if (EQUAL(pszType, "FLOAT") || EQUAL(pszType, "NUMERIC") || |
6685 | 0 | EQUAL(pszType, "DOUBLE") /* unofficial alias */ || |
6686 | 0 | EQUAL(pszType, "REAL") /* unofficial alias */) |
6687 | 0 | eType = OFTReal; |
6688 | 0 | else if (EQUAL(pszType, "FLOAT[]") || EQUAL(pszType, "NUMERIC[]") || |
6689 | 0 | EQUAL(pszType, "DOUBLE[]") /* unofficial alias */ || |
6690 | 0 | EQUAL(pszType, "REAL[]") /* unofficial alias */) |
6691 | 0 | eType = OFTRealList; |
6692 | 0 | else if (EQUAL(pszType, "CHARACTER") || |
6693 | 0 | EQUAL(pszType, "TEXT") /* unofficial alias */ || |
6694 | 0 | EQUAL(pszType, "STRING") /* unofficial alias */ || |
6695 | 0 | EQUAL(pszType, "VARCHAR") /* unofficial alias */) |
6696 | 0 | eType = OFTString; |
6697 | 0 | else if (EQUAL(pszType, "TEXT[]") || |
6698 | 0 | EQUAL(pszType, "STRING[]") /* unofficial alias */ || |
6699 | 0 | EQUAL(pszType, "VARCHAR[]") /* unofficial alias */) |
6700 | 0 | eType = OFTStringList; |
6701 | 0 | else if (EQUAL(pszType, "DATE")) |
6702 | 0 | eType = OFTDate; |
6703 | 0 | else if (EQUAL(pszType, "TIME")) |
6704 | 0 | eType = OFTTime; |
6705 | 0 | else if (EQUAL(pszType, "TIMESTAMP") || |
6706 | 0 | EQUAL(pszType, "DATETIME") /* unofficial alias */) |
6707 | 0 | eType = OFTDateTime; |
6708 | 0 | else |
6709 | 0 | CPLError(CE_Warning, CPLE_NotSupported, |
6710 | 0 | "Unsupported column type '%s'. Defaulting to VARCHAR", |
6711 | 0 | pszType); |
6712 | |
|
6713 | 0 | return eType; |
6714 | 0 | } |
6715 | | |
6716 | | /************************************************************************/ |
6717 | | /* ProcessSQLAlterTableAddColumn() */ |
6718 | | /* */ |
6719 | | /* The correct syntax for adding a column in the OGR SQL */ |
6720 | | /* dialect is: */ |
6721 | | /* */ |
6722 | | /* ALTER TABLE <layername> ADD [COLUMN] <columnname> <columntype> */ |
6723 | | /************************************************************************/ |
6724 | | |
6725 | | //! @cond Doxygen_Suppress |
6726 | | OGRErr GDALDataset::ProcessSQLAlterTableAddColumn(const char *pszSQLCommand) |
6727 | | |
6728 | 0 | { |
6729 | 0 | char **papszTokens = CSLTokenizeString(pszSQLCommand); |
6730 | | |
6731 | | /* -------------------------------------------------------------------- */ |
6732 | | /* Do some general syntax checking. */ |
6733 | | /* -------------------------------------------------------------------- */ |
6734 | 0 | const char *pszLayerName = nullptr; |
6735 | 0 | const char *pszColumnName = nullptr; |
6736 | 0 | int iTypeIndex = 0; |
6737 | 0 | const int nTokens = CSLCount(papszTokens); |
6738 | |
|
6739 | 0 | if (nTokens >= 7 && EQUAL(papszTokens[0], "ALTER") && |
6740 | 0 | EQUAL(papszTokens[1], "TABLE") && EQUAL(papszTokens[3], "ADD") && |
6741 | 0 | EQUAL(papszTokens[4], "COLUMN")) |
6742 | 0 | { |
6743 | 0 | pszLayerName = papszTokens[2]; |
6744 | 0 | pszColumnName = papszTokens[5]; |
6745 | 0 | iTypeIndex = 6; |
6746 | 0 | } |
6747 | 0 | else if (nTokens >= 6 && EQUAL(papszTokens[0], "ALTER") && |
6748 | 0 | EQUAL(papszTokens[1], "TABLE") && EQUAL(papszTokens[3], "ADD")) |
6749 | 0 | { |
6750 | 0 | pszLayerName = papszTokens[2]; |
6751 | 0 | pszColumnName = papszTokens[4]; |
6752 | 0 | iTypeIndex = 5; |
6753 | 0 | } |
6754 | 0 | else |
6755 | 0 | { |
6756 | 0 | CSLDestroy(papszTokens); |
6757 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6758 | 0 | "Syntax error in ALTER TABLE ADD COLUMN command.\n" |
6759 | 0 | "Was '%s'\n" |
6760 | 0 | "Should be of form 'ALTER TABLE <layername> ADD [COLUMN] " |
6761 | 0 | "<columnname> <columntype>'", |
6762 | 0 | pszSQLCommand); |
6763 | 0 | return OGRERR_FAILURE; |
6764 | 0 | } |
6765 | | |
6766 | | /* -------------------------------------------------------------------- */ |
6767 | | /* Merge type components into a single string if there were split */ |
6768 | | /* with spaces */ |
6769 | | /* -------------------------------------------------------------------- */ |
6770 | 0 | CPLString osType; |
6771 | 0 | for (int i = iTypeIndex; i < nTokens; ++i) |
6772 | 0 | { |
6773 | 0 | osType += papszTokens[i]; |
6774 | 0 | CPLFree(papszTokens[i]); |
6775 | 0 | } |
6776 | 0 | char *pszType = papszTokens[iTypeIndex] = CPLStrdup(osType); |
6777 | 0 | papszTokens[iTypeIndex + 1] = nullptr; |
6778 | | |
6779 | | /* -------------------------------------------------------------------- */ |
6780 | | /* Find the named layer. */ |
6781 | | /* -------------------------------------------------------------------- */ |
6782 | 0 | OGRLayer *poLayer = GetLayerByName(pszLayerName); |
6783 | 0 | if (poLayer == nullptr) |
6784 | 0 | { |
6785 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6786 | 0 | "%s failed, no such layer as `%s'.", pszSQLCommand, |
6787 | 0 | pszLayerName); |
6788 | 0 | CSLDestroy(papszTokens); |
6789 | 0 | return OGRERR_FAILURE; |
6790 | 0 | } |
6791 | | |
6792 | | /* -------------------------------------------------------------------- */ |
6793 | | /* Add column. */ |
6794 | | /* -------------------------------------------------------------------- */ |
6795 | | |
6796 | 0 | int nWidth = 0; |
6797 | 0 | int nPrecision = 0; |
6798 | 0 | OGRFieldType eType = GDALDatasetParseSQLType(pszType, nWidth, nPrecision); |
6799 | 0 | OGRFieldDefn oFieldDefn(pszColumnName, eType); |
6800 | 0 | oFieldDefn.SetWidth(nWidth); |
6801 | 0 | oFieldDefn.SetPrecision(nPrecision); |
6802 | |
|
6803 | 0 | CSLDestroy(papszTokens); |
6804 | |
|
6805 | 0 | return poLayer->CreateField(&oFieldDefn); |
6806 | 0 | } |
6807 | | |
6808 | | /************************************************************************/ |
6809 | | /* ProcessSQLAlterTableDropColumn() */ |
6810 | | /* */ |
6811 | | /* The correct syntax for dropping a column in the OGR SQL */ |
6812 | | /* dialect is: */ |
6813 | | /* */ |
6814 | | /* ALTER TABLE <layername> DROP [COLUMN] <columnname> */ |
6815 | | /************************************************************************/ |
6816 | | |
6817 | | OGRErr GDALDataset::ProcessSQLAlterTableDropColumn(const char *pszSQLCommand) |
6818 | | |
6819 | 0 | { |
6820 | 0 | char **papszTokens = CSLTokenizeString(pszSQLCommand); |
6821 | | |
6822 | | /* -------------------------------------------------------------------- */ |
6823 | | /* Do some general syntax checking. */ |
6824 | | /* -------------------------------------------------------------------- */ |
6825 | 0 | const char *pszLayerName = nullptr; |
6826 | 0 | const char *pszColumnName = nullptr; |
6827 | 0 | if (CSLCount(papszTokens) == 6 && EQUAL(papszTokens[0], "ALTER") && |
6828 | 0 | EQUAL(papszTokens[1], "TABLE") && EQUAL(papszTokens[3], "DROP") && |
6829 | 0 | EQUAL(papszTokens[4], "COLUMN")) |
6830 | 0 | { |
6831 | 0 | pszLayerName = papszTokens[2]; |
6832 | 0 | pszColumnName = papszTokens[5]; |
6833 | 0 | } |
6834 | 0 | else if (CSLCount(papszTokens) == 5 && EQUAL(papszTokens[0], "ALTER") && |
6835 | 0 | EQUAL(papszTokens[1], "TABLE") && EQUAL(papszTokens[3], "DROP")) |
6836 | 0 | { |
6837 | 0 | pszLayerName = papszTokens[2]; |
6838 | 0 | pszColumnName = papszTokens[4]; |
6839 | 0 | } |
6840 | 0 | else |
6841 | 0 | { |
6842 | 0 | CSLDestroy(papszTokens); |
6843 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6844 | 0 | "Syntax error in ALTER TABLE DROP COLUMN command.\n" |
6845 | 0 | "Was '%s'\n" |
6846 | 0 | "Should be of form 'ALTER TABLE <layername> DROP [COLUMN] " |
6847 | 0 | "<columnname>'", |
6848 | 0 | pszSQLCommand); |
6849 | 0 | return OGRERR_FAILURE; |
6850 | 0 | } |
6851 | | |
6852 | | /* -------------------------------------------------------------------- */ |
6853 | | /* Find the named layer. */ |
6854 | | /* -------------------------------------------------------------------- */ |
6855 | 0 | OGRLayer *poLayer = GetLayerByName(pszLayerName); |
6856 | 0 | if (poLayer == nullptr) |
6857 | 0 | { |
6858 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6859 | 0 | "%s failed, no such layer as `%s'.", pszSQLCommand, |
6860 | 0 | pszLayerName); |
6861 | 0 | CSLDestroy(papszTokens); |
6862 | 0 | return OGRERR_FAILURE; |
6863 | 0 | } |
6864 | | |
6865 | | /* -------------------------------------------------------------------- */ |
6866 | | /* Find the field. */ |
6867 | | /* -------------------------------------------------------------------- */ |
6868 | | |
6869 | 0 | int nFieldIndex = poLayer->GetLayerDefn()->GetFieldIndex(pszColumnName); |
6870 | 0 | if (nFieldIndex < 0) |
6871 | 0 | { |
6872 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6873 | 0 | "%s failed, no such field as `%s'.", pszSQLCommand, |
6874 | 0 | pszColumnName); |
6875 | 0 | CSLDestroy(papszTokens); |
6876 | 0 | return OGRERR_FAILURE; |
6877 | 0 | } |
6878 | | |
6879 | | /* -------------------------------------------------------------------- */ |
6880 | | /* Remove it. */ |
6881 | | /* -------------------------------------------------------------------- */ |
6882 | | |
6883 | 0 | CSLDestroy(papszTokens); |
6884 | |
|
6885 | 0 | return poLayer->DeleteField(nFieldIndex); |
6886 | 0 | } |
6887 | | |
6888 | | /************************************************************************/ |
6889 | | /* ProcessSQLAlterTableRenameColumn() */ |
6890 | | /* */ |
6891 | | /* The correct syntax for renaming a column in the OGR SQL */ |
6892 | | /* dialect is: */ |
6893 | | /* */ |
6894 | | /* ALTER TABLE <layername> RENAME [COLUMN] <oldname> TO <newname> */ |
6895 | | /************************************************************************/ |
6896 | | |
6897 | | OGRErr GDALDataset::ProcessSQLAlterTableRenameColumn(const char *pszSQLCommand) |
6898 | | |
6899 | 0 | { |
6900 | 0 | char **papszTokens = CSLTokenizeString(pszSQLCommand); |
6901 | | |
6902 | | /* -------------------------------------------------------------------- */ |
6903 | | /* Do some general syntax checking. */ |
6904 | | /* -------------------------------------------------------------------- */ |
6905 | 0 | const char *pszLayerName = nullptr; |
6906 | 0 | const char *pszOldColName = nullptr; |
6907 | 0 | const char *pszNewColName = nullptr; |
6908 | 0 | if (CSLCount(papszTokens) == 8 && EQUAL(papszTokens[0], "ALTER") && |
6909 | 0 | EQUAL(papszTokens[1], "TABLE") && EQUAL(papszTokens[3], "RENAME") && |
6910 | 0 | EQUAL(papszTokens[4], "COLUMN") && EQUAL(papszTokens[6], "TO")) |
6911 | 0 | { |
6912 | 0 | pszLayerName = papszTokens[2]; |
6913 | 0 | pszOldColName = papszTokens[5]; |
6914 | 0 | pszNewColName = papszTokens[7]; |
6915 | 0 | } |
6916 | 0 | else if (CSLCount(papszTokens) == 7 && EQUAL(papszTokens[0], "ALTER") && |
6917 | 0 | EQUAL(papszTokens[1], "TABLE") && |
6918 | 0 | EQUAL(papszTokens[3], "RENAME") && EQUAL(papszTokens[5], "TO")) |
6919 | 0 | { |
6920 | 0 | pszLayerName = papszTokens[2]; |
6921 | 0 | pszOldColName = papszTokens[4]; |
6922 | 0 | pszNewColName = papszTokens[6]; |
6923 | 0 | } |
6924 | 0 | else |
6925 | 0 | { |
6926 | 0 | CSLDestroy(papszTokens); |
6927 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6928 | 0 | "Syntax error in ALTER TABLE RENAME COLUMN command.\n" |
6929 | 0 | "Was '%s'\n" |
6930 | 0 | "Should be of form 'ALTER TABLE <layername> RENAME [COLUMN] " |
6931 | 0 | "<columnname> TO <newname>'", |
6932 | 0 | pszSQLCommand); |
6933 | 0 | return OGRERR_FAILURE; |
6934 | 0 | } |
6935 | | |
6936 | | /* -------------------------------------------------------------------- */ |
6937 | | /* Find the named layer. */ |
6938 | | /* -------------------------------------------------------------------- */ |
6939 | 0 | OGRLayer *poLayer = GetLayerByName(pszLayerName); |
6940 | 0 | if (poLayer == nullptr) |
6941 | 0 | { |
6942 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6943 | 0 | "%s failed, no such layer as `%s'.", pszSQLCommand, |
6944 | 0 | pszLayerName); |
6945 | 0 | CSLDestroy(papszTokens); |
6946 | 0 | return OGRERR_FAILURE; |
6947 | 0 | } |
6948 | | |
6949 | | /* -------------------------------------------------------------------- */ |
6950 | | /* Find the field. */ |
6951 | | /* -------------------------------------------------------------------- */ |
6952 | | |
6953 | 0 | const int nFieldIndex = |
6954 | 0 | poLayer->GetLayerDefn()->GetFieldIndex(pszOldColName); |
6955 | 0 | if (nFieldIndex < 0) |
6956 | 0 | { |
6957 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
6958 | 0 | "%s failed, no such field as `%s'.", pszSQLCommand, |
6959 | 0 | pszOldColName); |
6960 | 0 | CSLDestroy(papszTokens); |
6961 | 0 | return OGRERR_FAILURE; |
6962 | 0 | } |
6963 | | |
6964 | | /* -------------------------------------------------------------------- */ |
6965 | | /* Rename column. */ |
6966 | | /* -------------------------------------------------------------------- */ |
6967 | 0 | OGRFieldDefn *poOldFieldDefn = |
6968 | 0 | poLayer->GetLayerDefn()->GetFieldDefn(nFieldIndex); |
6969 | 0 | OGRFieldDefn oNewFieldDefn(poOldFieldDefn); |
6970 | 0 | oNewFieldDefn.SetName(pszNewColName); |
6971 | |
|
6972 | 0 | CSLDestroy(papszTokens); |
6973 | |
|
6974 | 0 | return poLayer->AlterFieldDefn(nFieldIndex, &oNewFieldDefn, |
6975 | 0 | ALTER_NAME_FLAG); |
6976 | 0 | } |
6977 | | |
6978 | | /************************************************************************/ |
6979 | | /* ProcessSQLAlterTableAlterColumn() */ |
6980 | | /* */ |
6981 | | /* The correct syntax for altering the type of a column in the */ |
6982 | | /* OGR SQL dialect is: */ |
6983 | | /* */ |
6984 | | /* ALTER TABLE <layername> ALTER [COLUMN] <columnname> TYPE <newtype> */ |
6985 | | /************************************************************************/ |
6986 | | |
6987 | | OGRErr GDALDataset::ProcessSQLAlterTableAlterColumn(const char *pszSQLCommand) |
6988 | | |
6989 | 0 | { |
6990 | 0 | char **papszTokens = CSLTokenizeString(pszSQLCommand); |
6991 | | |
6992 | | /* -------------------------------------------------------------------- */ |
6993 | | /* Do some general syntax checking. */ |
6994 | | /* -------------------------------------------------------------------- */ |
6995 | 0 | const char *pszLayerName = nullptr; |
6996 | 0 | const char *pszColumnName = nullptr; |
6997 | 0 | int iTypeIndex = 0; |
6998 | 0 | const int nTokens = CSLCount(papszTokens); |
6999 | |
|
7000 | 0 | if (nTokens >= 8 && EQUAL(papszTokens[0], "ALTER") && |
7001 | 0 | EQUAL(papszTokens[1], "TABLE") && EQUAL(papszTokens[3], "ALTER") && |
7002 | 0 | EQUAL(papszTokens[4], "COLUMN") && EQUAL(papszTokens[6], "TYPE")) |
7003 | 0 | { |
7004 | 0 | pszLayerName = papszTokens[2]; |
7005 | 0 | pszColumnName = papszTokens[5]; |
7006 | 0 | iTypeIndex = 7; |
7007 | 0 | } |
7008 | 0 | else if (nTokens >= 7 && EQUAL(papszTokens[0], "ALTER") && |
7009 | 0 | EQUAL(papszTokens[1], "TABLE") && EQUAL(papszTokens[3], "ALTER") && |
7010 | 0 | EQUAL(papszTokens[5], "TYPE")) |
7011 | 0 | { |
7012 | 0 | pszLayerName = papszTokens[2]; |
7013 | 0 | pszColumnName = papszTokens[4]; |
7014 | 0 | iTypeIndex = 6; |
7015 | 0 | } |
7016 | 0 | else |
7017 | 0 | { |
7018 | 0 | CSLDestroy(papszTokens); |
7019 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
7020 | 0 | "Syntax error in ALTER TABLE ALTER COLUMN command.\n" |
7021 | 0 | "Was '%s'\n" |
7022 | 0 | "Should be of form 'ALTER TABLE <layername> ALTER [COLUMN] " |
7023 | 0 | "<columnname> TYPE <columntype>'", |
7024 | 0 | pszSQLCommand); |
7025 | 0 | return OGRERR_FAILURE; |
7026 | 0 | } |
7027 | | |
7028 | | /* -------------------------------------------------------------------- */ |
7029 | | /* Merge type components into a single string if there were split */ |
7030 | | /* with spaces */ |
7031 | | /* -------------------------------------------------------------------- */ |
7032 | 0 | CPLString osType; |
7033 | 0 | for (int i = iTypeIndex; i < nTokens; ++i) |
7034 | 0 | { |
7035 | 0 | osType += papszTokens[i]; |
7036 | 0 | CPLFree(papszTokens[i]); |
7037 | 0 | } |
7038 | 0 | char *pszType = papszTokens[iTypeIndex] = CPLStrdup(osType); |
7039 | 0 | papszTokens[iTypeIndex + 1] = nullptr; |
7040 | | |
7041 | | /* -------------------------------------------------------------------- */ |
7042 | | /* Find the named layer. */ |
7043 | | /* -------------------------------------------------------------------- */ |
7044 | 0 | OGRLayer *poLayer = GetLayerByName(pszLayerName); |
7045 | 0 | if (poLayer == nullptr) |
7046 | 0 | { |
7047 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
7048 | 0 | "%s failed, no such layer as `%s'.", pszSQLCommand, |
7049 | 0 | pszLayerName); |
7050 | 0 | CSLDestroy(papszTokens); |
7051 | 0 | return OGRERR_FAILURE; |
7052 | 0 | } |
7053 | | |
7054 | | /* -------------------------------------------------------------------- */ |
7055 | | /* Find the field. */ |
7056 | | /* -------------------------------------------------------------------- */ |
7057 | | |
7058 | 0 | const int nFieldIndex = |
7059 | 0 | poLayer->GetLayerDefn()->GetFieldIndex(pszColumnName); |
7060 | 0 | if (nFieldIndex < 0) |
7061 | 0 | { |
7062 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
7063 | 0 | "%s failed, no such field as `%s'.", pszSQLCommand, |
7064 | 0 | pszColumnName); |
7065 | 0 | CSLDestroy(papszTokens); |
7066 | 0 | return OGRERR_FAILURE; |
7067 | 0 | } |
7068 | | |
7069 | | /* -------------------------------------------------------------------- */ |
7070 | | /* Alter column. */ |
7071 | | /* -------------------------------------------------------------------- */ |
7072 | | |
7073 | 0 | OGRFieldDefn *poOldFieldDefn = |
7074 | 0 | poLayer->GetLayerDefn()->GetFieldDefn(nFieldIndex); |
7075 | 0 | OGRFieldDefn oNewFieldDefn(poOldFieldDefn); |
7076 | |
|
7077 | 0 | int nWidth = 0; |
7078 | 0 | int nPrecision = 0; |
7079 | 0 | OGRFieldType eType = GDALDatasetParseSQLType(pszType, nWidth, nPrecision); |
7080 | 0 | oNewFieldDefn.SetType(eType); |
7081 | 0 | oNewFieldDefn.SetWidth(nWidth); |
7082 | 0 | oNewFieldDefn.SetPrecision(nPrecision); |
7083 | |
|
7084 | 0 | int l_nFlags = 0; |
7085 | 0 | if (poOldFieldDefn->GetType() != oNewFieldDefn.GetType()) |
7086 | 0 | l_nFlags |= ALTER_TYPE_FLAG; |
7087 | 0 | if (poOldFieldDefn->GetWidth() != oNewFieldDefn.GetWidth() || |
7088 | 0 | poOldFieldDefn->GetPrecision() != oNewFieldDefn.GetPrecision()) |
7089 | 0 | l_nFlags |= ALTER_WIDTH_PRECISION_FLAG; |
7090 | |
|
7091 | 0 | CSLDestroy(papszTokens); |
7092 | |
|
7093 | 0 | if (l_nFlags == 0) |
7094 | 0 | return OGRERR_NONE; |
7095 | | |
7096 | 0 | return poLayer->AlterFieldDefn(nFieldIndex, &oNewFieldDefn, l_nFlags); |
7097 | 0 | } |
7098 | | |
7099 | | //! @endcond |
7100 | | |
7101 | | /************************************************************************/ |
7102 | | /* ExecuteSQL() */ |
7103 | | /************************************************************************/ |
7104 | | |
7105 | | /** |
7106 | | \brief Execute an SQL statement against the data store. |
7107 | | |
7108 | | The result of an SQL query is either NULL for statements that are in error, |
7109 | | or that have no results set, or an OGRLayer pointer representing a results |
7110 | | set from the query. Note that this OGRLayer is in addition to the layers |
7111 | | in the data store and must be destroyed with |
7112 | | ReleaseResultSet() before the dataset is closed |
7113 | | (destroyed). |
7114 | | |
7115 | | This method is the same as the C function GDALDatasetExecuteSQL() and the |
7116 | | deprecated OGR_DS_ExecuteSQL(). |
7117 | | |
7118 | | For more information on the SQL dialect supported internally by OGR |
7119 | | review the <a href="https://gdal.org/user/ogr_sql_dialect.html">OGR SQL</a> |
7120 | | document. Some drivers (i.e. Oracle and PostGIS) pass the SQL directly through |
7121 | | to the underlying RDBMS. |
7122 | | |
7123 | | Starting with OGR 1.10, the <a |
7124 | | href="https://gdal.org/user/sql_sqlite_dialect.html">SQLITE dialect</a> can |
7125 | | also be used. |
7126 | | |
7127 | | @param pszStatement the SQL statement to execute. |
7128 | | @param poSpatialFilter geometry which represents a spatial filter. Can be NULL. |
7129 | | @param pszDialect allows control of the statement dialect. If set to NULL, the |
7130 | | OGR SQL engine will be used, except for RDBMS drivers that will use their |
7131 | | dedicated SQL engine, unless OGRSQL is explicitly passed as the |
7132 | | dialect. Starting with OGR 1.10, the SQLITE dialect can also be used. |
7133 | | |
7134 | | @return an OGRLayer containing the results of the query. Deallocate with |
7135 | | ReleaseResultSet(). |
7136 | | |
7137 | | */ |
7138 | | |
7139 | | OGRLayer *GDALDataset::ExecuteSQL(const char *pszStatement, |
7140 | | OGRGeometry *poSpatialFilter, |
7141 | | const char *pszDialect) |
7142 | | |
7143 | 0 | { |
7144 | 0 | return ExecuteSQL(pszStatement, poSpatialFilter, pszDialect, nullptr); |
7145 | 0 | } |
7146 | | |
7147 | | //! @cond Doxygen_Suppress |
7148 | | OGRLayer * |
7149 | | GDALDataset::ExecuteSQL(const char *pszStatement, OGRGeometry *poSpatialFilter, |
7150 | | const char *pszDialect, |
7151 | | swq_select_parse_options *poSelectParseOptions) |
7152 | | |
7153 | 0 | { |
7154 | 0 | if (pszDialect != nullptr && EQUAL(pszDialect, "SQLite")) |
7155 | 0 | { |
7156 | | #ifdef SQLITE_ENABLED |
7157 | | return OGRSQLiteExecuteSQL(this, pszStatement, poSpatialFilter, |
7158 | | pszDialect); |
7159 | | #else |
7160 | 0 | CPLError(CE_Failure, CPLE_NotSupported, |
7161 | 0 | "The SQLite driver needs to be compiled to support the " |
7162 | 0 | "SQLite SQL dialect"); |
7163 | 0 | return nullptr; |
7164 | 0 | #endif |
7165 | 0 | } |
7166 | | |
7167 | 0 | if (pszDialect != nullptr && !EQUAL(pszDialect, "") && |
7168 | 0 | !EQUAL(pszDialect, "OGRSQL")) |
7169 | 0 | { |
7170 | 0 | std::string osDialectList = "'OGRSQL'"; |
7171 | | #ifdef SQLITE_ENABLED |
7172 | | osDialectList += ", 'SQLITE'"; |
7173 | | #endif |
7174 | 0 | const char *pszDialects = |
7175 | 0 | GetMetadataItem(GDAL_DMD_SUPPORTED_SQL_DIALECTS); |
7176 | 0 | if (pszDialects) |
7177 | 0 | { |
7178 | 0 | const CPLStringList aosTokens( |
7179 | 0 | CSLTokenizeString2(pszDialects, " ", 0)); |
7180 | 0 | for (int i = 0; i < aosTokens.size(); ++i) |
7181 | 0 | { |
7182 | 0 | if (!EQUAL(aosTokens[i], "OGRSQL") && |
7183 | 0 | !EQUAL(aosTokens[i], "SQLITE")) |
7184 | 0 | { |
7185 | 0 | osDialectList += ", '"; |
7186 | 0 | osDialectList += aosTokens[i]; |
7187 | 0 | osDialectList += "'"; |
7188 | 0 | } |
7189 | 0 | } |
7190 | 0 | } |
7191 | 0 | CPLError(CE_Warning, CPLE_NotSupported, |
7192 | 0 | "Dialect '%s' is unsupported. Only supported dialects are %s. " |
7193 | 0 | "Defaulting to OGRSQL", |
7194 | 0 | pszDialect, osDialectList.c_str()); |
7195 | 0 | } |
7196 | | |
7197 | | /* -------------------------------------------------------------------- */ |
7198 | | /* Handle CREATE INDEX statements specially. */ |
7199 | | /* -------------------------------------------------------------------- */ |
7200 | 0 | if (STARTS_WITH_CI(pszStatement, "CREATE INDEX")) |
7201 | 0 | { |
7202 | 0 | ProcessSQLCreateIndex(pszStatement); |
7203 | 0 | return nullptr; |
7204 | 0 | } |
7205 | | |
7206 | | /* -------------------------------------------------------------------- */ |
7207 | | /* Handle DROP INDEX statements specially. */ |
7208 | | /* -------------------------------------------------------------------- */ |
7209 | 0 | if (STARTS_WITH_CI(pszStatement, "DROP INDEX")) |
7210 | 0 | { |
7211 | 0 | ProcessSQLDropIndex(pszStatement); |
7212 | 0 | return nullptr; |
7213 | 0 | } |
7214 | | |
7215 | | /* -------------------------------------------------------------------- */ |
7216 | | /* Handle DROP TABLE statements specially. */ |
7217 | | /* -------------------------------------------------------------------- */ |
7218 | 0 | if (STARTS_WITH_CI(pszStatement, "DROP TABLE")) |
7219 | 0 | { |
7220 | 0 | ProcessSQLDropTable(pszStatement); |
7221 | 0 | return nullptr; |
7222 | 0 | } |
7223 | | |
7224 | | /* -------------------------------------------------------------------- */ |
7225 | | /* Handle ALTER TABLE statements specially. */ |
7226 | | /* -------------------------------------------------------------------- */ |
7227 | 0 | if (STARTS_WITH_CI(pszStatement, "ALTER TABLE")) |
7228 | 0 | { |
7229 | 0 | char **papszTokens = CSLTokenizeString(pszStatement); |
7230 | 0 | const int nTokens = CSLCount(papszTokens); |
7231 | 0 | if (nTokens >= 4 && EQUAL(papszTokens[3], "ADD")) |
7232 | 0 | { |
7233 | 0 | ProcessSQLAlterTableAddColumn(pszStatement); |
7234 | 0 | CSLDestroy(papszTokens); |
7235 | 0 | return nullptr; |
7236 | 0 | } |
7237 | 0 | else if (nTokens >= 4 && EQUAL(papszTokens[3], "DROP")) |
7238 | 0 | { |
7239 | 0 | ProcessSQLAlterTableDropColumn(pszStatement); |
7240 | 0 | CSLDestroy(papszTokens); |
7241 | 0 | return nullptr; |
7242 | 0 | } |
7243 | 0 | else if (nTokens == 6 && EQUAL(papszTokens[3], "RENAME") && |
7244 | 0 | EQUAL(papszTokens[4], "TO")) |
7245 | 0 | { |
7246 | 0 | const char *pszSrcTableName = papszTokens[2]; |
7247 | 0 | const char *pszDstTableName = papszTokens[5]; |
7248 | 0 | auto poSrcLayer = GetLayerByName(pszSrcTableName); |
7249 | 0 | if (poSrcLayer) |
7250 | 0 | { |
7251 | 0 | CPL_IGNORE_RET_VAL(poSrcLayer->Rename(pszDstTableName)); |
7252 | 0 | } |
7253 | 0 | else |
7254 | 0 | { |
7255 | 0 | CPLError(CE_Failure, CPLE_AppDefined, "Invalid layer name"); |
7256 | 0 | } |
7257 | 0 | CSLDestroy(papszTokens); |
7258 | 0 | return nullptr; |
7259 | 0 | } |
7260 | 0 | else if (nTokens >= 4 && EQUAL(papszTokens[3], "RENAME")) |
7261 | 0 | { |
7262 | 0 | ProcessSQLAlterTableRenameColumn(pszStatement); |
7263 | 0 | CSLDestroy(papszTokens); |
7264 | 0 | return nullptr; |
7265 | 0 | } |
7266 | 0 | else if (nTokens >= 4 && EQUAL(papszTokens[3], "ALTER")) |
7267 | 0 | { |
7268 | 0 | ProcessSQLAlterTableAlterColumn(pszStatement); |
7269 | 0 | CSLDestroy(papszTokens); |
7270 | 0 | return nullptr; |
7271 | 0 | } |
7272 | 0 | else |
7273 | 0 | { |
7274 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
7275 | 0 | "Unsupported ALTER TABLE command : %s", pszStatement); |
7276 | 0 | CSLDestroy(papszTokens); |
7277 | 0 | return nullptr; |
7278 | 0 | } |
7279 | 0 | } |
7280 | | |
7281 | | /* -------------------------------------------------------------------- */ |
7282 | | /* Preparse the SQL statement. */ |
7283 | | /* -------------------------------------------------------------------- */ |
7284 | 0 | swq_select *psSelectInfo = new swq_select(); |
7285 | 0 | swq_custom_func_registrar *poCustomFuncRegistrar = nullptr; |
7286 | 0 | if (poSelectParseOptions != nullptr) |
7287 | 0 | poCustomFuncRegistrar = poSelectParseOptions->poCustomFuncRegistrar; |
7288 | 0 | if (psSelectInfo->preparse(pszStatement, |
7289 | 0 | poCustomFuncRegistrar != nullptr) != CE_None) |
7290 | 0 | { |
7291 | 0 | delete psSelectInfo; |
7292 | 0 | return nullptr; |
7293 | 0 | } |
7294 | | |
7295 | | /* -------------------------------------------------------------------- */ |
7296 | | /* If there is no UNION ALL, build result layer. */ |
7297 | | /* -------------------------------------------------------------------- */ |
7298 | 0 | if (psSelectInfo->poOtherSelect == nullptr) |
7299 | 0 | { |
7300 | 0 | return BuildLayerFromSelectInfo(psSelectInfo, poSpatialFilter, |
7301 | 0 | pszDialect, poSelectParseOptions); |
7302 | 0 | } |
7303 | | |
7304 | | /* -------------------------------------------------------------------- */ |
7305 | | /* Build result union layer. */ |
7306 | | /* -------------------------------------------------------------------- */ |
7307 | 0 | int nSrcLayers = 0; |
7308 | 0 | OGRLayer **papoSrcLayers = nullptr; |
7309 | |
|
7310 | 0 | do |
7311 | 0 | { |
7312 | 0 | swq_select *psNextSelectInfo = psSelectInfo->poOtherSelect; |
7313 | 0 | psSelectInfo->poOtherSelect = nullptr; |
7314 | |
|
7315 | 0 | OGRLayer *poLayer = BuildLayerFromSelectInfo( |
7316 | 0 | psSelectInfo, poSpatialFilter, pszDialect, poSelectParseOptions); |
7317 | 0 | if (poLayer == nullptr) |
7318 | 0 | { |
7319 | | // Each source layer owns an independent select info. |
7320 | 0 | for (int i = 0; i < nSrcLayers; ++i) |
7321 | 0 | delete papoSrcLayers[i]; |
7322 | 0 | CPLFree(papoSrcLayers); |
7323 | | |
7324 | | // So we just have to destroy the remaining select info. |
7325 | 0 | delete psNextSelectInfo; |
7326 | |
|
7327 | 0 | return nullptr; |
7328 | 0 | } |
7329 | 0 | else |
7330 | 0 | { |
7331 | 0 | papoSrcLayers = static_cast<OGRLayer **>(CPLRealloc( |
7332 | 0 | papoSrcLayers, sizeof(OGRLayer *) * (nSrcLayers + 1))); |
7333 | 0 | papoSrcLayers[nSrcLayers] = poLayer; |
7334 | 0 | ++nSrcLayers; |
7335 | |
|
7336 | 0 | psSelectInfo = psNextSelectInfo; |
7337 | 0 | } |
7338 | 0 | } while (psSelectInfo != nullptr); |
7339 | | |
7340 | 0 | return new OGRUnionLayer("SELECT", nSrcLayers, papoSrcLayers, TRUE); |
7341 | 0 | } |
7342 | | |
7343 | | //! @endcond |
7344 | | |
7345 | | /************************************************************************/ |
7346 | | /* AbortSQL() */ |
7347 | | /************************************************************************/ |
7348 | | |
7349 | | /** |
7350 | | \brief Abort any SQL statement running in the data store. |
7351 | | |
7352 | | This function can be safely called from any thread (pending that the dataset |
7353 | | object is still alive). Driver implementations will make sure that it can be |
7354 | | called in a thread-safe way. |
7355 | | |
7356 | | This might not be implemented by all drivers. At time of writing, only SQLite, |
7357 | | GPKG and PG drivers implement it |
7358 | | |
7359 | | This method is the same as the C method GDALDatasetAbortSQL() |
7360 | | |
7361 | | @since GDAL 3.2.0 |
7362 | | |
7363 | | |
7364 | | */ |
7365 | | |
7366 | | OGRErr GDALDataset::AbortSQL() |
7367 | 0 | { |
7368 | 0 | CPLError(CE_Failure, CPLE_NotSupported, |
7369 | 0 | "AbortSQL is not supported for this driver."); |
7370 | 0 | return OGRERR_UNSUPPORTED_OPERATION; |
7371 | 0 | } |
7372 | | |
7373 | | /************************************************************************/ |
7374 | | /* BuildLayerFromSelectInfo() */ |
7375 | | /************************************************************************/ |
7376 | | |
7377 | | struct GDALSQLParseInfo |
7378 | | { |
7379 | | swq_field_list sFieldList; |
7380 | | int nExtraDSCount; |
7381 | | GDALDataset **papoExtraDS; |
7382 | | char *pszWHERE; |
7383 | | }; |
7384 | | |
7385 | | OGRLayer *GDALDataset::BuildLayerFromSelectInfo( |
7386 | | swq_select *psSelectInfo, OGRGeometry *poSpatialFilter, |
7387 | | const char *pszDialect, swq_select_parse_options *poSelectParseOptions) |
7388 | 0 | { |
7389 | 0 | std::unique_ptr<swq_select> psSelectInfoUnique(psSelectInfo); |
7390 | |
|
7391 | 0 | std::unique_ptr<OGRGenSQLResultsLayer> poResults; |
7392 | 0 | GDALSQLParseInfo *psParseInfo = |
7393 | 0 | BuildParseInfo(psSelectInfoUnique.get(), poSelectParseOptions); |
7394 | |
|
7395 | 0 | if (psParseInfo) |
7396 | 0 | { |
7397 | 0 | const auto nErrorCounter = CPLGetErrorCounter(); |
7398 | 0 | poResults = std::make_unique<OGRGenSQLResultsLayer>( |
7399 | 0 | this, std::move(psSelectInfoUnique), poSpatialFilter, |
7400 | 0 | psParseInfo->pszWHERE, pszDialect); |
7401 | 0 | if (CPLGetErrorCounter() > nErrorCounter && |
7402 | 0 | CPLGetLastErrorType() != CE_None) |
7403 | 0 | poResults.reset(); |
7404 | 0 | } |
7405 | |
|
7406 | 0 | DestroyParseInfo(psParseInfo); |
7407 | |
|
7408 | 0 | return poResults.release(); |
7409 | 0 | } |
7410 | | |
7411 | | /************************************************************************/ |
7412 | | /* DestroyParseInfo() */ |
7413 | | /************************************************************************/ |
7414 | | |
7415 | | //! @cond Doxygen_Suppress |
7416 | | void GDALDataset::DestroyParseInfo(GDALSQLParseInfo *psParseInfo) |
7417 | 0 | { |
7418 | 0 | if (psParseInfo == nullptr) |
7419 | 0 | return; |
7420 | | |
7421 | 0 | CPLFree(psParseInfo->sFieldList.names); |
7422 | 0 | CPLFree(psParseInfo->sFieldList.types); |
7423 | 0 | CPLFree(psParseInfo->sFieldList.table_ids); |
7424 | 0 | CPLFree(psParseInfo->sFieldList.ids); |
7425 | | |
7426 | | // Release the datasets we have opened with OGROpenShared() |
7427 | | // It is safe to do that as the 'new OGRGenSQLResultsLayer' itself |
7428 | | // has taken a reference on them, which it will release in its |
7429 | | // destructor. |
7430 | 0 | for (int iEDS = 0; iEDS < psParseInfo->nExtraDSCount; ++iEDS) |
7431 | 0 | GDALClose(psParseInfo->papoExtraDS[iEDS]); |
7432 | |
|
7433 | 0 | CPLFree(psParseInfo->papoExtraDS); |
7434 | 0 | CPLFree(psParseInfo->pszWHERE); |
7435 | 0 | CPLFree(psParseInfo); |
7436 | 0 | } |
7437 | | |
7438 | | /************************************************************************/ |
7439 | | /* BuildParseInfo() */ |
7440 | | /************************************************************************/ |
7441 | | |
7442 | | GDALSQLParseInfo * |
7443 | | GDALDataset::BuildParseInfo(swq_select *psSelectInfo, |
7444 | | swq_select_parse_options *poSelectParseOptions) |
7445 | 0 | { |
7446 | 0 | int nFirstLayerFirstSpecialFieldIndex = 0; |
7447 | |
|
7448 | 0 | GDALSQLParseInfo *psParseInfo = |
7449 | 0 | static_cast<GDALSQLParseInfo *>(CPLCalloc(1, sizeof(GDALSQLParseInfo))); |
7450 | | |
7451 | | /* -------------------------------------------------------------------- */ |
7452 | | /* Validate that all the source tables are recognized, count */ |
7453 | | /* fields. */ |
7454 | | /* -------------------------------------------------------------------- */ |
7455 | 0 | int nFieldCount = 0; |
7456 | |
|
7457 | 0 | for (int iTable = 0; iTable < psSelectInfo->table_count; iTable++) |
7458 | 0 | { |
7459 | 0 | swq_table_def *psTableDef = psSelectInfo->table_defs + iTable; |
7460 | 0 | GDALDataset *poTableDS = this; |
7461 | |
|
7462 | 0 | if (psTableDef->data_source != nullptr) |
7463 | 0 | { |
7464 | 0 | poTableDS = GDALDataset::FromHandle( |
7465 | 0 | OGROpenShared(psTableDef->data_source, FALSE, nullptr)); |
7466 | 0 | if (poTableDS == nullptr) |
7467 | 0 | { |
7468 | 0 | if (strlen(CPLGetLastErrorMsg()) == 0) |
7469 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
7470 | 0 | "Unable to open secondary datasource " |
7471 | 0 | "`%s' required by JOIN.", |
7472 | 0 | psTableDef->data_source); |
7473 | |
|
7474 | 0 | DestroyParseInfo(psParseInfo); |
7475 | 0 | return nullptr; |
7476 | 0 | } |
7477 | | |
7478 | | // Keep in an array to release at the end of this function. |
7479 | 0 | psParseInfo->papoExtraDS = static_cast<GDALDataset **>(CPLRealloc( |
7480 | 0 | psParseInfo->papoExtraDS, |
7481 | 0 | sizeof(GDALDataset *) * (psParseInfo->nExtraDSCount + 1))); |
7482 | 0 | psParseInfo->papoExtraDS[psParseInfo->nExtraDSCount++] = poTableDS; |
7483 | 0 | } |
7484 | | |
7485 | 0 | OGRLayer *poSrcLayer = |
7486 | 0 | poTableDS->GetLayerByName(psTableDef->table_name); |
7487 | |
|
7488 | 0 | if (poSrcLayer == nullptr) |
7489 | 0 | { |
7490 | 0 | CPLError(CE_Failure, CPLE_AppDefined, |
7491 | 0 | "SELECT from table %s failed, no such table/featureclass.", |
7492 | 0 | psTableDef->table_name); |
7493 | |
|
7494 | 0 | DestroyParseInfo(psParseInfo); |
7495 | 0 | return nullptr; |
7496 | 0 | } |
7497 | | |
7498 | 0 | nFieldCount += poSrcLayer->GetLayerDefn()->GetFieldCount(); |
7499 | 0 | if (iTable == 0 || |
7500 | 0 | (poSelectParseOptions && |
7501 | 0 | poSelectParseOptions->bAddSecondaryTablesGeometryFields)) |
7502 | 0 | nFieldCount += poSrcLayer->GetLayerDefn()->GetGeomFieldCount(); |
7503 | |
|
7504 | 0 | const char *pszFID = poSrcLayer->GetFIDColumn(); |
7505 | 0 | if (pszFID && !EQUAL(pszFID, "") && !EQUAL(pszFID, "FID") && |
7506 | 0 | poSrcLayer->GetLayerDefn()->GetFieldIndex(pszFID) < 0) |
7507 | 0 | nFieldCount++; |
7508 | 0 | } |
7509 | | |
7510 | | /* -------------------------------------------------------------------- */ |
7511 | | /* Build the field list for all indicated tables. */ |
7512 | | /* -------------------------------------------------------------------- */ |
7513 | | |
7514 | 0 | psParseInfo->sFieldList.table_count = psSelectInfo->table_count; |
7515 | 0 | psParseInfo->sFieldList.table_defs = psSelectInfo->table_defs; |
7516 | |
|
7517 | 0 | psParseInfo->sFieldList.count = 0; |
7518 | 0 | psParseInfo->sFieldList.names = static_cast<char **>( |
7519 | 0 | CPLMalloc(sizeof(char *) * (nFieldCount + SPECIAL_FIELD_COUNT))); |
7520 | 0 | psParseInfo->sFieldList.types = static_cast<swq_field_type *>(CPLMalloc( |
7521 | 0 | sizeof(swq_field_type) * (nFieldCount + SPECIAL_FIELD_COUNT))); |
7522 | 0 | psParseInfo->sFieldList.table_ids = static_cast<int *>( |
7523 | 0 | CPLMalloc(sizeof(int) * (nFieldCount + SPECIAL_FIELD_COUNT))); |
7524 | 0 | psParseInfo->sFieldList.ids = static_cast<int *>( |
7525 | 0 | CPLMalloc(sizeof(int) * (nFieldCount + SPECIAL_FIELD_COUNT))); |
7526 | |
|
7527 | 0 | bool bIsFID64 = false; |
7528 | 0 | for (int iTable = 0; iTable < psSelectInfo->table_count; iTable++) |
7529 | 0 | { |
7530 | 0 | swq_table_def *psTableDef = psSelectInfo->table_defs + iTable; |
7531 | 0 | GDALDataset *poTableDS = this; |
7532 | |
|
7533 | 0 | if (psTableDef->data_source != nullptr) |
7534 | 0 | { |
7535 | 0 | poTableDS = GDALDataset::FromHandle( |
7536 | 0 | OGROpenShared(psTableDef->data_source, FALSE, nullptr)); |
7537 | 0 | CPLAssert(poTableDS != nullptr); |
7538 | 0 | poTableDS->Dereference(); |
7539 | 0 | } |
7540 | | |
7541 | 0 | OGRLayer *poSrcLayer = |
7542 | 0 | poTableDS->GetLayerByName(psTableDef->table_name); |
7543 | |
|
7544 | 0 | for (int iField = 0; |
7545 | 0 | iField < poSrcLayer->GetLayerDefn()->GetFieldCount(); iField++) |
7546 | 0 | { |
7547 | 0 | OGRFieldDefn *poFDefn = |
7548 | 0 | poSrcLayer->GetLayerDefn()->GetFieldDefn(iField); |
7549 | 0 | const int iOutField = psParseInfo->sFieldList.count++; |
7550 | 0 | psParseInfo->sFieldList.names[iOutField] = |
7551 | 0 | const_cast<char *>(poFDefn->GetNameRef()); |
7552 | 0 | if (poFDefn->GetType() == OFTInteger) |
7553 | 0 | { |
7554 | 0 | if (poFDefn->GetSubType() == OFSTBoolean) |
7555 | 0 | psParseInfo->sFieldList.types[iOutField] = SWQ_BOOLEAN; |
7556 | 0 | else |
7557 | 0 | psParseInfo->sFieldList.types[iOutField] = SWQ_INTEGER; |
7558 | 0 | } |
7559 | 0 | else if (poFDefn->GetType() == OFTInteger64) |
7560 | 0 | { |
7561 | 0 | if (poFDefn->GetSubType() == OFSTBoolean) |
7562 | 0 | psParseInfo->sFieldList.types[iOutField] = SWQ_BOOLEAN; |
7563 | 0 | else |
7564 | 0 | psParseInfo->sFieldList.types[iOutField] = SWQ_INTEGER64; |
7565 | 0 | } |
7566 | 0 | else if (poFDefn->GetType() == OFTReal) |
7567 | 0 | psParseInfo->sFieldList.types[iOutField] = SWQ_FLOAT; |
7568 | 0 | else if (poFDefn->GetType() == OFTString) |
7569 | 0 | psParseInfo->sFieldList.types[iOutField] = SWQ_STRING; |
7570 | 0 | else if (poFDefn->GetType() == OFTTime) |
7571 | 0 | psParseInfo->sFieldList.types[iOutField] = SWQ_TIME; |
7572 | 0 | else if (poFDefn->GetType() == OFTDate) |
7573 | 0 | psParseInfo->sFieldList.types[iOutField] = SWQ_DATE; |
7574 | 0 | else if (poFDefn->GetType() == OFTDateTime) |
7575 | 0 | psParseInfo->sFieldList.types[iOutField] = SWQ_TIMESTAMP; |
7576 | 0 | else |
7577 | 0 | psParseInfo->sFieldList.types[iOutField] = SWQ_OTHER; |
7578 | |
|
7579 | 0 | psParseInfo->sFieldList.table_ids[iOutField] = iTable; |
7580 | 0 | psParseInfo->sFieldList.ids[iOutField] = iField; |
7581 | 0 | } |
7582 | |
|
7583 | 0 | if (iTable == 0) |
7584 | 0 | { |
7585 | 0 | nFirstLayerFirstSpecialFieldIndex = psParseInfo->sFieldList.count; |
7586 | 0 | } |
7587 | |
|
7588 | 0 | if (iTable == 0 || |
7589 | 0 | (poSelectParseOptions && |
7590 | 0 | poSelectParseOptions->bAddSecondaryTablesGeometryFields)) |
7591 | 0 | { |
7592 | |
|
7593 | 0 | for (int iField = 0; |
7594 | 0 | iField < poSrcLayer->GetLayerDefn()->GetGeomFieldCount(); |
7595 | 0 | iField++) |
7596 | 0 | { |
7597 | 0 | OGRGeomFieldDefn *poFDefn = |
7598 | 0 | poSrcLayer->GetLayerDefn()->GetGeomFieldDefn(iField); |
7599 | 0 | const int iOutField = psParseInfo->sFieldList.count++; |
7600 | 0 | psParseInfo->sFieldList.names[iOutField] = |
7601 | 0 | const_cast<char *>(poFDefn->GetNameRef()); |
7602 | 0 | if (*psParseInfo->sFieldList.names[iOutField] == '\0') |
7603 | 0 | psParseInfo->sFieldList.names[iOutField] = |
7604 | 0 | const_cast<char *>(OGR_GEOMETRY_DEFAULT_NON_EMPTY_NAME); |
7605 | 0 | psParseInfo->sFieldList.types[iOutField] = SWQ_GEOMETRY; |
7606 | |
|
7607 | 0 | psParseInfo->sFieldList.table_ids[iOutField] = iTable; |
7608 | 0 | psParseInfo->sFieldList.ids[iOutField] = |
7609 | 0 | GEOM_FIELD_INDEX_TO_ALL_FIELD_INDEX( |
7610 | 0 | poSrcLayer->GetLayerDefn(), iField); |
7611 | 0 | } |
7612 | 0 | } |
7613 | |
|
7614 | 0 | if (iTable == 0 && poSrcLayer->GetMetadataItem(OLMD_FID64) != nullptr && |
7615 | 0 | EQUAL(poSrcLayer->GetMetadataItem(OLMD_FID64), "YES")) |
7616 | 0 | { |
7617 | 0 | bIsFID64 = true; |
7618 | 0 | } |
7619 | 0 | } |
7620 | | |
7621 | | /* -------------------------------------------------------------------- */ |
7622 | | /* Expand '*' in 'SELECT *' now before we add the pseudo fields */ |
7623 | | /* -------------------------------------------------------------------- */ |
7624 | 0 | const bool bAlwaysPrefixWithTableName = |
7625 | 0 | poSelectParseOptions && |
7626 | 0 | poSelectParseOptions->bAlwaysPrefixWithTableName; |
7627 | 0 | if (psSelectInfo->expand_wildcard(&psParseInfo->sFieldList, |
7628 | 0 | bAlwaysPrefixWithTableName) != CE_None) |
7629 | 0 | { |
7630 | 0 | DestroyParseInfo(psParseInfo); |
7631 | 0 | return nullptr; |
7632 | 0 | } |
7633 | | |
7634 | 0 | for (int iField = 0; iField < SPECIAL_FIELD_COUNT; iField++) |
7635 | 0 | { |
7636 | 0 | psParseInfo->sFieldList.names[psParseInfo->sFieldList.count] = |
7637 | 0 | const_cast<char *>(SpecialFieldNames[iField]); |
7638 | 0 | psParseInfo->sFieldList.types[psParseInfo->sFieldList.count] = |
7639 | 0 | (iField == SPF_FID && bIsFID64) ? SWQ_INTEGER64 |
7640 | 0 | : SpecialFieldTypes[iField]; |
7641 | 0 | psParseInfo->sFieldList.table_ids[psParseInfo->sFieldList.count] = 0; |
7642 | 0 | psParseInfo->sFieldList.ids[psParseInfo->sFieldList.count] = |
7643 | 0 | nFirstLayerFirstSpecialFieldIndex + iField; |
7644 | 0 | psParseInfo->sFieldList.count++; |
7645 | 0 | } |
7646 | | |
7647 | | /* In the case a layer has an explicit FID column name, then add it */ |
7648 | | /* so it can be selected */ |
7649 | 0 | for (int iTable = 0; iTable < psSelectInfo->table_count; iTable++) |
7650 | 0 | { |
7651 | 0 | swq_table_def *psTableDef = psSelectInfo->table_defs + iTable; |
7652 | 0 | GDALDataset *poTableDS = this; |
7653 | |
|
7654 | 0 | if (psTableDef->data_source != nullptr) |
7655 | 0 | { |
7656 | 0 | poTableDS = GDALDataset::FromHandle( |
7657 | 0 | OGROpenShared(psTableDef->data_source, FALSE, nullptr)); |
7658 | 0 | CPLAssert(poTableDS != nullptr); |
7659 | 0 | poTableDS->Dereference(); |
7660 | 0 | } |
7661 | | |
7662 | 0 | OGRLayer *poSrcLayer = |
7663 | 0 | poTableDS->GetLayerByName(psTableDef->table_name); |
7664 | |
|
7665 | 0 | const char *pszFID = poSrcLayer->GetFIDColumn(); |
7666 | 0 | if (pszFID && !EQUAL(pszFID, "") && !EQUAL(pszFID, "FID") && |
7667 | 0 | poSrcLayer->GetLayerDefn()->GetFieldIndex(pszFID) < 0) |
7668 | 0 | { |
7669 | 0 | const int iOutField = psParseInfo->sFieldList.count++; |
7670 | 0 | psParseInfo->sFieldList.names[iOutField] = |
7671 | 0 | const_cast<char *>(pszFID); |
7672 | 0 | if (poSrcLayer->GetMetadataItem(OLMD_FID64) != nullptr && |
7673 | 0 | EQUAL(poSrcLayer->GetMetadataItem(OLMD_FID64), "YES")) |
7674 | 0 | { |
7675 | 0 | psParseInfo->sFieldList.types[iOutField] = SWQ_INTEGER64; |
7676 | 0 | } |
7677 | 0 | else |
7678 | 0 | { |
7679 | 0 | psParseInfo->sFieldList.types[iOutField] = SWQ_INTEGER; |
7680 | 0 | } |
7681 | 0 | psParseInfo->sFieldList.table_ids[iOutField] = iTable; |
7682 | 0 | psParseInfo->sFieldList.ids[iOutField] = |
7683 | 0 | poSrcLayer->GetLayerDefn()->GetFieldCount() + SPF_FID; |
7684 | 0 | } |
7685 | 0 | } |
7686 | | |
7687 | | /* -------------------------------------------------------------------- */ |
7688 | | /* Finish the parse operation. */ |
7689 | | /* -------------------------------------------------------------------- */ |
7690 | 0 | if (psSelectInfo->parse(&psParseInfo->sFieldList, poSelectParseOptions) != |
7691 | 0 | CE_None) |
7692 | 0 | { |
7693 | 0 | DestroyParseInfo(psParseInfo); |
7694 | 0 | return nullptr; |
7695 | 0 | } |
7696 | | |
7697 | | /* -------------------------------------------------------------------- */ |
7698 | | /* Extract the WHERE expression to use separately. */ |
7699 | | /* -------------------------------------------------------------------- */ |
7700 | 0 | if (psSelectInfo->where_expr != nullptr) |
7701 | 0 | { |
7702 | 0 | psParseInfo->pszWHERE = |
7703 | 0 | psSelectInfo->where_expr->Unparse(&psParseInfo->sFieldList, '"'); |
7704 | | // CPLDebug( "OGR", "Unparse() -> %s", pszWHERE ); |
7705 | 0 | } |
7706 | |
|
7707 | 0 | return psParseInfo; |
7708 | 0 | } |
7709 | | |
7710 | | //! @endcond |
7711 | | |
7712 | | /************************************************************************/ |
7713 | | /* ReleaseResultSet() */ |
7714 | | /************************************************************************/ |
7715 | | |
7716 | | /** |
7717 | | \brief Release results of ExecuteSQL(). |
7718 | | |
7719 | | This method should only be used to deallocate OGRLayers resulting from |
7720 | | an ExecuteSQL() call on the same GDALDataset. Failure to deallocate a |
7721 | | results set before destroying the GDALDataset may cause errors. |
7722 | | |
7723 | | This method is the same as the C function GDALDatasetReleaseResultSet() and the |
7724 | | deprecated OGR_DS_ReleaseResultSet(). |
7725 | | |
7726 | | @param poResultsSet the result of a previous ExecuteSQL() call. |
7727 | | */ |
7728 | | |
7729 | | void GDALDataset::ReleaseResultSet(OGRLayer *poResultsSet) |
7730 | | |
7731 | 0 | { |
7732 | 0 | delete poResultsSet; |
7733 | 0 | } |
7734 | | |
7735 | | /************************************************************************/ |
7736 | | /* GetStyleTable() */ |
7737 | | /************************************************************************/ |
7738 | | |
7739 | | /** |
7740 | | \brief Returns dataset style table. |
7741 | | |
7742 | | This method is the same as the C function GDALDatasetGetStyleTable() and the |
7743 | | deprecated OGR_DS_GetStyleTable(). |
7744 | | |
7745 | | @return pointer to a style table which should not be modified or freed by the |
7746 | | caller. |
7747 | | */ |
7748 | | |
7749 | | OGRStyleTable *GDALDataset::GetStyleTable() |
7750 | 0 | { |
7751 | 0 | return m_poStyleTable; |
7752 | 0 | } |
7753 | | |
7754 | | /************************************************************************/ |
7755 | | /* SetStyleTableDirectly() */ |
7756 | | /************************************************************************/ |
7757 | | |
7758 | | /** |
7759 | | \brief Set dataset style table. |
7760 | | |
7761 | | This method operate exactly as SetStyleTable() except that it |
7762 | | assumes ownership of the passed table. |
7763 | | |
7764 | | This method is the same as the C function GDALDatasetSetStyleTableDirectly() |
7765 | | and the deprecated OGR_DS_SetStyleTableDirectly(). |
7766 | | |
7767 | | @param poStyleTable pointer to style table to set |
7768 | | |
7769 | | */ |
7770 | | void GDALDataset::SetStyleTableDirectly(OGRStyleTable *poStyleTable) |
7771 | 0 | { |
7772 | 0 | if (m_poStyleTable) |
7773 | 0 | delete m_poStyleTable; |
7774 | 0 | m_poStyleTable = poStyleTable; |
7775 | 0 | } |
7776 | | |
7777 | | /************************************************************************/ |
7778 | | /* SetStyleTable() */ |
7779 | | /************************************************************************/ |
7780 | | |
7781 | | /** |
7782 | | \brief Set dataset style table. |
7783 | | |
7784 | | This method operate exactly as SetStyleTableDirectly() except |
7785 | | that it does not assume ownership of the passed table. |
7786 | | |
7787 | | This method is the same as the C function GDALDatasetSetStyleTable() and the |
7788 | | deprecated OGR_DS_SetStyleTable(). |
7789 | | |
7790 | | @param poStyleTable pointer to style table to set |
7791 | | |
7792 | | */ |
7793 | | |
7794 | | void GDALDataset::SetStyleTable(OGRStyleTable *poStyleTable) |
7795 | 0 | { |
7796 | 0 | if (m_poStyleTable) |
7797 | 0 | delete m_poStyleTable; |
7798 | 0 | if (poStyleTable) |
7799 | 0 | m_poStyleTable = poStyleTable->Clone(); |
7800 | 0 | } |
7801 | | |
7802 | | /************************************************************************/ |
7803 | | /* IsGenericSQLDialect() */ |
7804 | | /************************************************************************/ |
7805 | | |
7806 | | //! @cond Doxygen_Suppress |
7807 | | int GDALDataset::IsGenericSQLDialect(const char *pszDialect) |
7808 | 0 | { |
7809 | 0 | return pszDialect != nullptr && |
7810 | 0 | (EQUAL(pszDialect, "OGRSQL") || EQUAL(pszDialect, "SQLITE")); |
7811 | 0 | } |
7812 | | |
7813 | | //! @endcond |
7814 | | |
7815 | | /************************************************************************/ |
7816 | | /* GetLayerCount() */ |
7817 | | /************************************************************************/ |
7818 | | |
7819 | | /** |
7820 | | \brief Get the number of layers in this dataset. |
7821 | | |
7822 | | This method is the same as the C function GDALDatasetGetLayerCount(), |
7823 | | and the deprecated OGR_DS_GetLayerCount(). |
7824 | | |
7825 | | Note that even if this method is const, there is no guarantee it can be |
7826 | | safely called by concurrent threads on the same GDALDataset object. |
7827 | | |
7828 | | @return layer count. |
7829 | | */ |
7830 | | |
7831 | | int GDALDataset::GetLayerCount() const |
7832 | 0 | { |
7833 | 0 | return 0; |
7834 | 0 | } |
7835 | | |
7836 | | /************************************************************************/ |
7837 | | /* GetLayer() */ |
7838 | | /************************************************************************/ |
7839 | | |
7840 | | /** |
7841 | | \fn const GDALDataset::GetLayer(int) const |
7842 | | \brief Fetch a layer by index. |
7843 | | |
7844 | | The returned layer remains owned by the |
7845 | | GDALDataset and should not be deleted by the application. |
7846 | | |
7847 | | Note that even if this method is const, there is no guarantee it can be |
7848 | | safely called by concurrent threads on the same GDALDataset object. |
7849 | | |
7850 | | See GetLayers() for a C++ iterator version of this method. |
7851 | | |
7852 | | This method is the same as the C function GDALDatasetGetLayer() and the |
7853 | | deprecated OGR_DS_GetLayer(). |
7854 | | |
7855 | | @param iLayer a layer number between 0 and GetLayerCount()-1. |
7856 | | |
7857 | | @return the layer, or NULL if iLayer is out of range or an error occurs. |
7858 | | |
7859 | | @see GetLayers() |
7860 | | |
7861 | | @since GDAL 3.12 |
7862 | | */ |
7863 | | |
7864 | | const OGRLayer *GDALDataset::GetLayer(CPL_UNUSED int iLayer) const |
7865 | 0 | { |
7866 | 0 | return nullptr; |
7867 | 0 | } |
7868 | | |
7869 | | /** |
7870 | | \fn GDALDataset::GetLayer(int) |
7871 | | \brief Fetch a layer by index. |
7872 | | |
7873 | | The returned layer remains owned by the |
7874 | | GDALDataset and should not be deleted by the application. |
7875 | | |
7876 | | See GetLayers() for a C++ iterator version of this method. |
7877 | | |
7878 | | This method is the same as the C function GDALDatasetGetLayer() and the |
7879 | | deprecated OGR_DS_GetLayer(). |
7880 | | |
7881 | | @param iLayer a layer number between 0 and GetLayerCount()-1. |
7882 | | |
7883 | | @return the layer, or NULL if iLayer is out of range or an error occurs. |
7884 | | |
7885 | | @see GetLayers() |
7886 | | */ |
7887 | | |
7888 | | /************************************************************************/ |
7889 | | /* IsLayerPrivate() */ |
7890 | | /************************************************************************/ |
7891 | | |
7892 | | /** |
7893 | | \fn GDALDataset::IsLayerPrivate(int) |
7894 | | \brief Returns true if the layer at the specified index is deemed a private or |
7895 | | system table, or an internal detail only. |
7896 | | |
7897 | | This method is the same as the C function GDALDatasetIsLayerPrivate(). |
7898 | | |
7899 | | @param iLayer a layer number between 0 and GetLayerCount()-1. |
7900 | | |
7901 | | @return true if the layer is a private or system table. |
7902 | | |
7903 | | @since GDAL 3.4 |
7904 | | */ |
7905 | | |
7906 | | bool GDALDataset::IsLayerPrivate(CPL_UNUSED int iLayer) const |
7907 | 0 | { |
7908 | 0 | return false; |
7909 | 0 | } |
7910 | | |
7911 | | /************************************************************************/ |
7912 | | /* ResetReading() */ |
7913 | | /************************************************************************/ |
7914 | | |
7915 | | /** |
7916 | | \brief Reset feature reading to start on the first feature. |
7917 | | |
7918 | | This affects GetNextFeature(). |
7919 | | |
7920 | | Depending on drivers, this may also have the side effect of calling |
7921 | | OGRLayer::ResetReading() on the layers of this dataset. |
7922 | | |
7923 | | This method is the same as the C function GDALDatasetResetReading(). |
7924 | | |
7925 | | */ |
7926 | | void GDALDataset::ResetReading() |
7927 | 0 | { |
7928 | 0 | if (!m_poPrivate) |
7929 | 0 | return; |
7930 | 0 | m_poPrivate->nCurrentLayerIdx = 0; |
7931 | 0 | m_poPrivate->nLayerCount = -1; |
7932 | 0 | m_poPrivate->poCurrentLayer = nullptr; |
7933 | 0 | m_poPrivate->nFeatureReadInLayer = 0; |
7934 | 0 | m_poPrivate->nFeatureReadInDataset = 0; |
7935 | 0 | m_poPrivate->nTotalFeaturesInLayer = TOTAL_FEATURES_NOT_INIT; |
7936 | 0 | m_poPrivate->nTotalFeatures = TOTAL_FEATURES_NOT_INIT; |
7937 | 0 | } |
7938 | | |
7939 | | /************************************************************************/ |
7940 | | /* GDALDatasetResetReading() */ |
7941 | | /************************************************************************/ |
7942 | | |
7943 | | /** |
7944 | | \brief Reset feature reading to start on the first feature. |
7945 | | |
7946 | | This affects GDALDatasetGetNextFeature(). |
7947 | | |
7948 | | Depending on drivers, this may also have the side effect of calling |
7949 | | OGR_L_ResetReading() on the layers of this dataset. |
7950 | | |
7951 | | This method is the same as the C++ method GDALDataset::ResetReading() |
7952 | | |
7953 | | @param hDS dataset handle |
7954 | | */ |
7955 | | void CPL_DLL GDALDatasetResetReading(GDALDatasetH hDS) |
7956 | 0 | { |
7957 | 0 | VALIDATE_POINTER0(hDS, "GDALDatasetResetReading"); |
7958 | | |
7959 | 0 | return GDALDataset::FromHandle(hDS)->ResetReading(); |
7960 | 0 | } |
7961 | | |
7962 | | /************************************************************************/ |
7963 | | /* GetNextFeature() */ |
7964 | | /************************************************************************/ |
7965 | | |
7966 | | /** |
7967 | | \brief Fetch the next available feature from this dataset. |
7968 | | |
7969 | | This method is intended for the few drivers where OGRLayer::GetNextFeature() |
7970 | | is not efficient, but in general OGRLayer::GetNextFeature() is a more |
7971 | | natural API. |
7972 | | |
7973 | | See GetFeatures() for a C++ iterator version of this method. |
7974 | | |
7975 | | The returned feature becomes the responsibility of the caller to |
7976 | | delete with OGRFeature::DestroyFeature(). |
7977 | | |
7978 | | Depending on the driver, this method may return features from layers in a |
7979 | | non sequential way. This is what may happen when the |
7980 | | ODsCRandomLayerRead capability is declared (for example for the |
7981 | | OSM and GMLAS drivers). When datasets declare this capability, it is strongly |
7982 | | advised to use GDALDataset::GetNextFeature() instead of |
7983 | | OGRLayer::GetNextFeature(), as the later might have a slow, incomplete or stub |
7984 | | implementation. |
7985 | | |
7986 | | The default implementation, used by most drivers, will |
7987 | | however iterate over each layer, and then over each feature within this |
7988 | | layer. |
7989 | | |
7990 | | This method takes into account spatial and attribute filters set on layers that |
7991 | | will be iterated upon. |
7992 | | |
7993 | | The ResetReading() method can be used to start at the beginning again. |
7994 | | |
7995 | | Depending on drivers, this may also have the side effect of calling |
7996 | | OGRLayer::GetNextFeature() on the layers of this dataset. |
7997 | | |
7998 | | This method is the same as the C function GDALDatasetGetNextFeature(). |
7999 | | |
8000 | | @param ppoBelongingLayer a pointer to a OGRLayer* variable to receive the |
8001 | | layer to which the object belongs to, or NULL. |
8002 | | It is possible that the output of *ppoBelongingLayer |
8003 | | to be NULL despite the feature not being NULL. |
8004 | | @param pdfProgressPct a pointer to a double variable to receive the |
8005 | | percentage progress (in [0,1] range), or NULL. |
8006 | | On return, the pointed value might be negative if |
8007 | | determining the progress is not possible. |
8008 | | @param pfnProgress a progress callback to report progress (for |
8009 | | GetNextFeature() calls that might have a long |
8010 | | duration) and offer cancellation possibility, or NULL. |
8011 | | @param pProgressData user data provided to pfnProgress, or NULL |
8012 | | @return a feature, or NULL if no more features are available. |
8013 | | @see GetFeatures() |
8014 | | */ |
8015 | | |
8016 | | OGRFeature *GDALDataset::GetNextFeature(OGRLayer **ppoBelongingLayer, |
8017 | | double *pdfProgressPct, |
8018 | | GDALProgressFunc pfnProgress, |
8019 | | void *pProgressData) |
8020 | 0 | { |
8021 | 0 | if (!m_poPrivate || m_poPrivate->nCurrentLayerIdx < 0) |
8022 | 0 | { |
8023 | 0 | if (ppoBelongingLayer != nullptr) |
8024 | 0 | *ppoBelongingLayer = nullptr; |
8025 | 0 | if (pdfProgressPct != nullptr) |
8026 | 0 | *pdfProgressPct = 1.0; |
8027 | 0 | if (pfnProgress != nullptr) |
8028 | 0 | pfnProgress(1.0, "", pProgressData); |
8029 | 0 | return nullptr; |
8030 | 0 | } |
8031 | | |
8032 | 0 | if (m_poPrivate->poCurrentLayer == nullptr && |
8033 | 0 | (pdfProgressPct != nullptr || pfnProgress != nullptr)) |
8034 | 0 | { |
8035 | 0 | if (m_poPrivate->nLayerCount < 0) |
8036 | 0 | { |
8037 | 0 | m_poPrivate->nLayerCount = GetLayerCount(); |
8038 | 0 | } |
8039 | |
|
8040 | 0 | if (m_poPrivate->nTotalFeatures == TOTAL_FEATURES_NOT_INIT) |
8041 | 0 | { |
8042 | 0 | m_poPrivate->nTotalFeatures = 0; |
8043 | 0 | for (int i = 0; i < m_poPrivate->nLayerCount; i++) |
8044 | 0 | { |
8045 | 0 | OGRLayer *poLayer = GetLayer(i); |
8046 | 0 | if (poLayer == nullptr || |
8047 | 0 | !poLayer->TestCapability(OLCFastFeatureCount)) |
8048 | 0 | { |
8049 | 0 | m_poPrivate->nTotalFeatures = TOTAL_FEATURES_UNKNOWN; |
8050 | 0 | break; |
8051 | 0 | } |
8052 | 0 | GIntBig nCount = poLayer->GetFeatureCount(FALSE); |
8053 | 0 | if (nCount < 0) |
8054 | 0 | { |
8055 | 0 | m_poPrivate->nTotalFeatures = TOTAL_FEATURES_UNKNOWN; |
8056 | 0 | break; |
8057 | 0 | } |
8058 | 0 | m_poPrivate->nTotalFeatures += nCount; |
8059 | 0 | } |
8060 | 0 | } |
8061 | 0 | } |
8062 | |
|
8063 | 0 | while (true) |
8064 | 0 | { |
8065 | 0 | if (m_poPrivate->poCurrentLayer == nullptr) |
8066 | 0 | { |
8067 | 0 | m_poPrivate->poCurrentLayer = |
8068 | 0 | GetLayer(m_poPrivate->nCurrentLayerIdx); |
8069 | 0 | if (m_poPrivate->poCurrentLayer == nullptr) |
8070 | 0 | { |
8071 | 0 | m_poPrivate->nCurrentLayerIdx = -1; |
8072 | 0 | if (ppoBelongingLayer != nullptr) |
8073 | 0 | *ppoBelongingLayer = nullptr; |
8074 | 0 | if (pdfProgressPct != nullptr) |
8075 | 0 | *pdfProgressPct = 1.0; |
8076 | 0 | return nullptr; |
8077 | 0 | } |
8078 | 0 | m_poPrivate->poCurrentLayer->ResetReading(); |
8079 | 0 | m_poPrivate->nFeatureReadInLayer = 0; |
8080 | 0 | if (m_poPrivate->nTotalFeatures < 0 && pdfProgressPct != nullptr) |
8081 | 0 | { |
8082 | 0 | if (m_poPrivate->poCurrentLayer->TestCapability( |
8083 | 0 | OLCFastFeatureCount)) |
8084 | 0 | m_poPrivate->nTotalFeaturesInLayer = |
8085 | 0 | m_poPrivate->poCurrentLayer->GetFeatureCount(FALSE); |
8086 | 0 | else |
8087 | 0 | m_poPrivate->nTotalFeaturesInLayer = 0; |
8088 | 0 | } |
8089 | 0 | } |
8090 | 0 | OGRFeature *poFeature = m_poPrivate->poCurrentLayer->GetNextFeature(); |
8091 | 0 | if (poFeature == nullptr) |
8092 | 0 | { |
8093 | 0 | m_poPrivate->nCurrentLayerIdx++; |
8094 | 0 | m_poPrivate->poCurrentLayer = nullptr; |
8095 | 0 | continue; |
8096 | 0 | } |
8097 | | |
8098 | 0 | m_poPrivate->nFeatureReadInLayer++; |
8099 | 0 | m_poPrivate->nFeatureReadInDataset++; |
8100 | 0 | if (pdfProgressPct != nullptr || pfnProgress != nullptr) |
8101 | 0 | { |
8102 | 0 | double dfPct = 0.0; |
8103 | 0 | if (m_poPrivate->nTotalFeatures > 0) |
8104 | 0 | { |
8105 | 0 | dfPct = 1.0 * m_poPrivate->nFeatureReadInDataset / |
8106 | 0 | m_poPrivate->nTotalFeatures; |
8107 | 0 | } |
8108 | 0 | else |
8109 | 0 | { |
8110 | 0 | dfPct = 1.0 * m_poPrivate->nCurrentLayerIdx / |
8111 | 0 | m_poPrivate->nLayerCount; |
8112 | 0 | if (m_poPrivate->nTotalFeaturesInLayer > 0) |
8113 | 0 | { |
8114 | 0 | dfPct += 1.0 * m_poPrivate->nFeatureReadInLayer / |
8115 | 0 | m_poPrivate->nTotalFeaturesInLayer / |
8116 | 0 | m_poPrivate->nLayerCount; |
8117 | 0 | } |
8118 | 0 | } |
8119 | 0 | if (pdfProgressPct) |
8120 | 0 | *pdfProgressPct = dfPct; |
8121 | 0 | if (pfnProgress) |
8122 | 0 | pfnProgress(dfPct, "", nullptr); |
8123 | 0 | } |
8124 | |
|
8125 | 0 | if (ppoBelongingLayer != nullptr) |
8126 | 0 | *ppoBelongingLayer = m_poPrivate->poCurrentLayer; |
8127 | 0 | return poFeature; |
8128 | 0 | } |
8129 | 0 | } |
8130 | | |
8131 | | /************************************************************************/ |
8132 | | /* GDALDatasetGetNextFeature() */ |
8133 | | /************************************************************************/ |
8134 | | /** |
8135 | | \brief Fetch the next available feature from this dataset. |
8136 | | |
8137 | | This method is intended for the few drivers where OGR_L_GetNextFeature() |
8138 | | is not efficient, but in general OGR_L_GetNextFeature() is a more |
8139 | | natural API. |
8140 | | |
8141 | | The returned feature becomes the responsibility of the caller to |
8142 | | delete with OGRFeature::DestroyFeature(). |
8143 | | |
8144 | | Depending on the driver, this method may return features from layers in a |
8145 | | non sequential way. This is what may happen when the |
8146 | | ODsCRandomLayerRead capability is declared (for example for the |
8147 | | OSM and GMLAS drivers). When datasets declare this capability, it is strongly |
8148 | | advised to use GDALDataset::GetNextFeature() instead of |
8149 | | OGRLayer::GetNextFeature(), as the later might have a slow, incomplete or stub |
8150 | | implementation. |
8151 | | |
8152 | | The default implementation, used by most drivers, will |
8153 | | however iterate over each layer, and then over each feature within this |
8154 | | layer. |
8155 | | |
8156 | | This method takes into account spatial and attribute filters set on layers that |
8157 | | will be iterated upon. |
8158 | | |
8159 | | The ResetReading() method can be used to start at the beginning again. |
8160 | | |
8161 | | Depending on drivers, this may also have the side effect of calling |
8162 | | OGRLayer::GetNextFeature() on the layers of this dataset. |
8163 | | |
8164 | | This method is the same as the C++ method GDALDataset::GetNextFeature() |
8165 | | |
8166 | | @param hDS dataset handle. |
8167 | | @param phBelongingLayer a pointer to a OGRLayer* variable to receive the |
8168 | | layer to which the object belongs to, or NULL. |
8169 | | It is possible that the output of *ppoBelongingLayer |
8170 | | to be NULL despite the feature not being NULL. |
8171 | | @param pdfProgressPct a pointer to a double variable to receive the |
8172 | | percentage progress (in [0,1] range), or NULL. |
8173 | | On return, the pointed value might be negative if |
8174 | | determining the progress is not possible. |
8175 | | @param pfnProgress a progress callback to report progress (for |
8176 | | GetNextFeature() calls that might have a long |
8177 | | duration) and offer cancellation possibility, or NULL |
8178 | | @param pProgressData user data provided to pfnProgress, or NULL |
8179 | | @return a feature, or NULL if no more features are available. |
8180 | | */ |
8181 | | OGRFeatureH CPL_DLL GDALDatasetGetNextFeature(GDALDatasetH hDS, |
8182 | | OGRLayerH *phBelongingLayer, |
8183 | | double *pdfProgressPct, |
8184 | | GDALProgressFunc pfnProgress, |
8185 | | void *pProgressData) |
8186 | 0 | { |
8187 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetGetNextFeature", nullptr); |
8188 | | |
8189 | 0 | return OGRFeature::ToHandle(GDALDataset::FromHandle(hDS)->GetNextFeature( |
8190 | 0 | reinterpret_cast<OGRLayer **>(phBelongingLayer), pdfProgressPct, |
8191 | 0 | pfnProgress, pProgressData)); |
8192 | 0 | } |
8193 | | |
8194 | | /************************************************************************/ |
8195 | | /* TestCapability() */ |
8196 | | /************************************************************************/ |
8197 | | |
8198 | | /** |
8199 | | \fn GDALDataset::TestCapability( const char * pszCap ) |
8200 | | \brief Test if capability is available. |
8201 | | |
8202 | | One of the following dataset capability names can be passed into this |
8203 | | method, and a TRUE or FALSE value will be returned indicating whether or not |
8204 | | the capability is available for this object. |
8205 | | |
8206 | | <ul> |
8207 | | <li> <b>ODsCCreateLayer</b>: True if this datasource can create new layers.<p> |
8208 | | <li> <b>ODsCDeleteLayer</b>: True if this datasource can delete existing |
8209 | | layers.<p> |
8210 | | <li> <b>ODsCCreateGeomFieldAfterCreateLayer</b>: True if the layers of this |
8211 | | datasource support CreateGeomField() just after layer creation.<p> |
8212 | | <li> <b>ODsCCurveGeometries</b>: True if this datasource supports curve |
8213 | | geometries.<p> |
8214 | | <li> <b>ODsCTransactions</b>: True if this datasource supports (efficient) |
8215 | | transactions.<p> |
8216 | | <li> <b>ODsCEmulatedTransactions</b>: True if this datasource supports |
8217 | | transactions through emulation.<p> |
8218 | | <li> <b>ODsCRandomLayerRead</b>: True if this datasource has a dedicated |
8219 | | GetNextFeature() implementation, potentially returning features from |
8220 | | layers in a non sequential way.<p> |
8221 | | <li> <b>ODsCRandomLayerWrite</b>: True if this datasource supports calling |
8222 | | CreateFeature() on layers in a non sequential way.<p> |
8223 | | <li> <b>GDsCAddRelationship</b>: True if AddRelationship() is supported</li> |
8224 | | <li> <b>GDsCDeleteRelationship</b>: True if DeleteRelationship() is supported</li> |
8225 | | <li> <b>GDsCUpdateRelationship</b>: True if UpdateRelationship() is supported</li> |
8226 | | <li> <b>GDsCFastGetExtent</b>: True if GetExtent() is fast</li> |
8227 | | <li> <b>GDsCFastGetExtentWGS84LongLat</b>: True if GetExtentWGS84LongLat() is fast</li> |
8228 | | </ul> |
8229 | | |
8230 | | The \#define macro forms of the capability names should be used in preference |
8231 | | to the strings themselves to avoid misspelling. |
8232 | | |
8233 | | This method is the same as the C function GDALDatasetTestCapability() and the |
8234 | | deprecated OGR_DS_TestCapability(). |
8235 | | |
8236 | | @param pszCap the capability to test. |
8237 | | |
8238 | | @return TRUE if capability available otherwise FALSE. |
8239 | | */ |
8240 | | |
8241 | | int GDALDataset::TestCapability(const char *pszCap) const |
8242 | 0 | { |
8243 | 0 | if (EQUAL(pszCap, GDsCFastGetExtent) || |
8244 | 0 | EQUAL(pszCap, GDsCFastGetExtentWGS84LongLat)) |
8245 | 0 | { |
8246 | 0 | for (auto &&poLayer : GetLayers()) |
8247 | 0 | { |
8248 | 0 | if (!poLayer->TestCapability(OLCFastGetExtent)) |
8249 | 0 | return FALSE; |
8250 | 0 | } |
8251 | 0 | return TRUE; |
8252 | 0 | } |
8253 | 0 | return FALSE; |
8254 | 0 | } |
8255 | | |
8256 | | /************************************************************************/ |
8257 | | /* GDALDatasetTestCapability() */ |
8258 | | /************************************************************************/ |
8259 | | |
8260 | | /** |
8261 | | \brief Test if capability is available. |
8262 | | |
8263 | | One of the following dataset capability names can be passed into this |
8264 | | function, and a TRUE or FALSE value will be returned indicating whether or not |
8265 | | the capability is available for this object. |
8266 | | |
8267 | | <ul> |
8268 | | <li> <b>ODsCCreateLayer</b>: True if this datasource can create new layers.<p> |
8269 | | <li> <b>ODsCDeleteLayer</b>: True if this datasource can delete existing |
8270 | | layers.<p> |
8271 | | <li> <b>ODsCCreateGeomFieldAfterCreateLayer</b>: True if the layers of this |
8272 | | datasource support CreateGeomField() just after layer creation.<p> |
8273 | | <li> <b>ODsCCurveGeometries</b>: True if this datasource supports curve |
8274 | | geometries.<p> |
8275 | | <li> <b>ODsCTransactions</b>: True if this datasource supports (efficient) |
8276 | | transactions.<p> |
8277 | | <li> <b>ODsCEmulatedTransactions</b>: True if this datasource supports |
8278 | | transactions through emulation.<p> |
8279 | | <li> <b>ODsCRandomLayerRead</b>: True if this datasource has a dedicated |
8280 | | GetNextFeature() implementation, potentially returning features from |
8281 | | layers in a non sequential way.<p> |
8282 | | <li> <b>ODsCRandomLayerWrite</b>: True if this datasource supports calling |
8283 | | CreateFeature() on layers in a non sequential way.<p> |
8284 | | <li> <b>GDsCAddRelationship</b>: True if AddRelationship() is supported</li> |
8285 | | <li> <b>GDsCDeleteRelationship</b>: True if DeleteRelationship() is supported</li> |
8286 | | <li> <b>GDsCUpdateRelationship</b>: True if UpdateRelationship() is supported</li> |
8287 | | <li> <b>GDsCFastGetExtent</b>: True if GetExtent() is fast</li> |
8288 | | <li> <b>GDsCFastGetExtentWGS84LongLat</b>: True if GetExtentWGS84LongLat() is fast</li> |
8289 | | </ul> |
8290 | | |
8291 | | The \#define macro forms of the capability names should be used in preference |
8292 | | to the strings themselves to avoid misspelling. |
8293 | | |
8294 | | This function is the same as the C++ method GDALDataset::TestCapability() |
8295 | | |
8296 | | |
8297 | | @param hDS the dataset handle. |
8298 | | @param pszCap the capability to test. |
8299 | | |
8300 | | @return TRUE if capability available otherwise FALSE. |
8301 | | */ |
8302 | | int GDALDatasetTestCapability(GDALDatasetH hDS, const char *pszCap) |
8303 | | |
8304 | 0 | { |
8305 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetTestCapability", 0); |
8306 | 0 | VALIDATE_POINTER1(pszCap, "GDALDatasetTestCapability", 0); |
8307 | | |
8308 | 0 | return GDALDataset::FromHandle(hDS)->TestCapability(pszCap); |
8309 | 0 | } |
8310 | | |
8311 | | /************************************************************************/ |
8312 | | /* StartTransaction() */ |
8313 | | /************************************************************************/ |
8314 | | |
8315 | | /** |
8316 | | \fn GDALDataset::StartTransaction(int) |
8317 | | \brief For datasources which support transactions, StartTransaction creates a |
8318 | | `transaction. |
8319 | | |
8320 | | If starting the transaction fails, will return |
8321 | | OGRERR_FAILURE. Datasources which do not support transactions will |
8322 | | always return OGRERR_UNSUPPORTED_OPERATION. |
8323 | | |
8324 | | Nested transactions are not supported. |
8325 | | |
8326 | | All changes done after the start of the transaction are definitely applied in |
8327 | | the datasource if CommitTransaction() is called. They may be canceled by |
8328 | | calling RollbackTransaction() instead. |
8329 | | |
8330 | | At the time of writing, transactions only apply on vector layers. |
8331 | | |
8332 | | Datasets that support transactions will advertise the ODsCTransactions |
8333 | | capability. Use of transactions at dataset level is generally preferred to |
8334 | | transactions at layer level, whose scope is rarely limited to the layer from |
8335 | | which it was started. |
8336 | | |
8337 | | In case StartTransaction() fails, neither CommitTransaction() or |
8338 | | RollbackTransaction() should be called. |
8339 | | |
8340 | | If an error occurs after a successful StartTransaction(), the whole transaction |
8341 | | may or may not be implicitly canceled, depending on drivers. (e.g. the PG |
8342 | | driver will cancel it, SQLite/GPKG not). In any case, in the event of an error, |
8343 | | an explicit call to RollbackTransaction() should be done to keep things |
8344 | | balanced. |
8345 | | |
8346 | | By default, when bForce is set to FALSE, only "efficient" transactions will be |
8347 | | attempted. Some drivers may offer an emulation of transactions, but sometimes |
8348 | | with significant overhead, in which case the user must explicitly allow for |
8349 | | such an emulation by setting bForce to TRUE. Drivers that offer emulated |
8350 | | transactions should advertise the ODsCEmulatedTransactions capability (and not |
8351 | | ODsCTransactions). |
8352 | | |
8353 | | This function is the same as the C function GDALDatasetStartTransaction(). |
8354 | | |
8355 | | @param bForce can be set to TRUE if an emulation, possibly slow, of a |
8356 | | transaction |
8357 | | mechanism is acceptable. |
8358 | | |
8359 | | @return OGRERR_NONE on success. |
8360 | | */ |
8361 | | |
8362 | | OGRErr GDALDataset::StartTransaction(CPL_UNUSED int bForce) |
8363 | 0 | { |
8364 | 0 | return OGRERR_UNSUPPORTED_OPERATION; |
8365 | 0 | } |
8366 | | |
8367 | | /************************************************************************/ |
8368 | | /* GDALDatasetStartTransaction() */ |
8369 | | /************************************************************************/ |
8370 | | |
8371 | | /** |
8372 | | \brief For datasources which support transactions, StartTransaction creates a |
8373 | | transaction. |
8374 | | |
8375 | | If starting the transaction fails, will return |
8376 | | OGRERR_FAILURE. Datasources which do not support transactions will |
8377 | | always return OGRERR_UNSUPPORTED_OPERATION. |
8378 | | |
8379 | | Nested transactions are not supported. |
8380 | | |
8381 | | All changes done after the start of the transaction are definitely applied in |
8382 | | the datasource if CommitTransaction() is called. They may be canceled by |
8383 | | calling RollbackTransaction() instead. |
8384 | | |
8385 | | At the time of writing, transactions only apply on vector layers. |
8386 | | |
8387 | | Datasets that support transactions will advertise the ODsCTransactions |
8388 | | capability. |
8389 | | Use of transactions at dataset level is generally preferred to transactions at |
8390 | | layer level, whose scope is rarely limited to the layer from which it was |
8391 | | started. |
8392 | | |
8393 | | In case StartTransaction() fails, neither CommitTransaction() or |
8394 | | RollbackTransaction() should be called. |
8395 | | |
8396 | | If an error occurs after a successful StartTransaction(), the whole |
8397 | | transaction may or may not be implicitly canceled, depending on drivers. (e.g. |
8398 | | the PG driver will cancel it, SQLite/GPKG not). In any case, in the event of an |
8399 | | error, an explicit call to RollbackTransaction() should be done to keep things |
8400 | | balanced. |
8401 | | |
8402 | | By default, when bForce is set to FALSE, only "efficient" transactions will be |
8403 | | attempted. Some drivers may offer an emulation of transactions, but sometimes |
8404 | | with significant overhead, in which case the user must explicitly allow for |
8405 | | such an emulation by setting bForce to TRUE. Drivers that offer emulated |
8406 | | transactions should advertise the ODsCEmulatedTransactions capability (and not |
8407 | | ODsCTransactions). |
8408 | | |
8409 | | This function is the same as the C++ method GDALDataset::StartTransaction() |
8410 | | |
8411 | | @param hDS the dataset handle. |
8412 | | @param bForce can be set to TRUE if an emulation, possibly slow, of a |
8413 | | transaction |
8414 | | mechanism is acceptable. |
8415 | | |
8416 | | @return OGRERR_NONE on success. |
8417 | | */ |
8418 | | OGRErr GDALDatasetStartTransaction(GDALDatasetH hDS, int bForce) |
8419 | 0 | { |
8420 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetStartTransaction", |
8421 | 0 | OGRERR_INVALID_HANDLE); |
8422 | | |
8423 | 0 | #ifdef OGRAPISPY_ENABLED |
8424 | 0 | if (bOGRAPISpyEnabled) |
8425 | 0 | OGRAPISpy_Dataset_StartTransaction(hDS, bForce); |
8426 | 0 | #endif |
8427 | |
|
8428 | 0 | return GDALDataset::FromHandle(hDS)->StartTransaction(bForce); |
8429 | 0 | } |
8430 | | |
8431 | | /************************************************************************/ |
8432 | | /* CommitTransaction() */ |
8433 | | /************************************************************************/ |
8434 | | |
8435 | | /** |
8436 | | \brief For datasources which support transactions, CommitTransaction commits a |
8437 | | transaction. |
8438 | | |
8439 | | If no transaction is active, or the commit fails, will return |
8440 | | OGRERR_FAILURE. Datasources which do not support transactions will |
8441 | | always return OGRERR_UNSUPPORTED_OPERATION. |
8442 | | |
8443 | | Depending on drivers, this may or may not abort layer sequential readings that |
8444 | | are active. |
8445 | | |
8446 | | This function is the same as the C function GDALDatasetCommitTransaction(). |
8447 | | |
8448 | | @return OGRERR_NONE on success. |
8449 | | */ |
8450 | | OGRErr GDALDataset::CommitTransaction() |
8451 | 0 | { |
8452 | 0 | return OGRERR_UNSUPPORTED_OPERATION; |
8453 | 0 | } |
8454 | | |
8455 | | /************************************************************************/ |
8456 | | /* GDALDatasetCommitTransaction() */ |
8457 | | /************************************************************************/ |
8458 | | |
8459 | | /** |
8460 | | \brief For datasources which support transactions, CommitTransaction commits a |
8461 | | transaction. |
8462 | | |
8463 | | If no transaction is active, or the commit fails, will return |
8464 | | OGRERR_FAILURE. Datasources which do not support transactions will |
8465 | | always return OGRERR_UNSUPPORTED_OPERATION. |
8466 | | |
8467 | | Depending on drivers, this may or may not abort layer sequential readings that |
8468 | | are active. |
8469 | | |
8470 | | This function is the same as the C++ method GDALDataset::CommitTransaction() |
8471 | | |
8472 | | @return OGRERR_NONE on success. |
8473 | | */ |
8474 | | OGRErr GDALDatasetCommitTransaction(GDALDatasetH hDS) |
8475 | 0 | { |
8476 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetCommitTransaction", |
8477 | 0 | OGRERR_INVALID_HANDLE); |
8478 | | |
8479 | 0 | #ifdef OGRAPISPY_ENABLED |
8480 | 0 | if (bOGRAPISpyEnabled) |
8481 | 0 | OGRAPISpy_Dataset_CommitTransaction(hDS); |
8482 | 0 | #endif |
8483 | |
|
8484 | 0 | return GDALDataset::FromHandle(hDS)->CommitTransaction(); |
8485 | 0 | } |
8486 | | |
8487 | | /************************************************************************/ |
8488 | | /* RollbackTransaction() */ |
8489 | | /************************************************************************/ |
8490 | | |
8491 | | /** |
8492 | | \brief For datasources which support transactions, RollbackTransaction will |
8493 | | roll back a datasource to its state before the start of the current |
8494 | | transaction. |
8495 | | If no transaction is active, or the rollback fails, will return |
8496 | | OGRERR_FAILURE. Datasources which do not support transactions will |
8497 | | always return OGRERR_UNSUPPORTED_OPERATION. |
8498 | | |
8499 | | This function is the same as the C function GDALDatasetRollbackTransaction(). |
8500 | | |
8501 | | @return OGRERR_NONE on success. |
8502 | | */ |
8503 | | OGRErr GDALDataset::RollbackTransaction() |
8504 | 0 | { |
8505 | 0 | return OGRERR_UNSUPPORTED_OPERATION; |
8506 | 0 | } |
8507 | | |
8508 | | /************************************************************************/ |
8509 | | /* GDALDatasetRollbackTransaction() */ |
8510 | | /************************************************************************/ |
8511 | | |
8512 | | /** |
8513 | | \brief For datasources which support transactions, RollbackTransaction will |
8514 | | roll back a datasource to its state before the start of the current |
8515 | | transaction. |
8516 | | If no transaction is active, or the rollback fails, will return |
8517 | | OGRERR_FAILURE. Datasources which do not support transactions will |
8518 | | always return OGRERR_UNSUPPORTED_OPERATION. |
8519 | | |
8520 | | This function is the same as the C++ method GDALDataset::RollbackTransaction(). |
8521 | | |
8522 | | @return OGRERR_NONE on success. |
8523 | | */ |
8524 | | OGRErr GDALDatasetRollbackTransaction(GDALDatasetH hDS) |
8525 | 0 | { |
8526 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetRollbackTransaction", |
8527 | 0 | OGRERR_INVALID_HANDLE); |
8528 | | |
8529 | 0 | #ifdef OGRAPISPY_ENABLED |
8530 | 0 | if (bOGRAPISpyEnabled) |
8531 | 0 | OGRAPISpy_Dataset_RollbackTransaction(hDS); |
8532 | 0 | #endif |
8533 | |
|
8534 | 0 | return GDALDataset::FromHandle(hDS)->RollbackTransaction(); |
8535 | 0 | } |
8536 | | |
8537 | | //! @cond Doxygen_Suppress |
8538 | | |
8539 | | /************************************************************************/ |
8540 | | /* ShareLockWithParentDataset() */ |
8541 | | /************************************************************************/ |
8542 | | |
8543 | | /* To be used typically by the GTiff driver to link overview datasets */ |
8544 | | /* with their main dataset, so that they share the same lock */ |
8545 | | /* Cf https://github.com/OSGeo/gdal/issues/1488 */ |
8546 | | /* The parent dataset should remain alive while the this dataset is alive */ |
8547 | | |
8548 | | void GDALDataset::ShareLockWithParentDataset(GDALDataset *poParentDataset) |
8549 | 0 | { |
8550 | 0 | if (m_poPrivate != nullptr) |
8551 | 0 | { |
8552 | 0 | m_poPrivate->poParentDataset = poParentDataset; |
8553 | 0 | } |
8554 | 0 | } |
8555 | | |
8556 | | /************************************************************************/ |
8557 | | /* SetQueryLoggerFunc() */ |
8558 | | /************************************************************************/ |
8559 | | |
8560 | | bool GDALDataset::SetQueryLoggerFunc(CPL_UNUSED GDALQueryLoggerFunc callback, |
8561 | | CPL_UNUSED void *context) |
8562 | 0 | { |
8563 | 0 | return false; |
8564 | 0 | } |
8565 | | |
8566 | | /************************************************************************/ |
8567 | | /* EnterReadWrite() */ |
8568 | | /************************************************************************/ |
8569 | | |
8570 | | int GDALDataset::EnterReadWrite(GDALRWFlag eRWFlag) |
8571 | 0 | { |
8572 | 0 | if (m_poPrivate == nullptr || |
8573 | 0 | IsThreadSafe(GDAL_OF_RASTER | (nOpenFlags & GDAL_OF_UPDATE))) |
8574 | 0 | return FALSE; |
8575 | | |
8576 | 0 | if (m_poPrivate->poParentDataset) |
8577 | 0 | return m_poPrivate->poParentDataset->EnterReadWrite(eRWFlag); |
8578 | | |
8579 | 0 | if (eAccess == GA_Update) |
8580 | 0 | { |
8581 | 0 | if (m_poPrivate->eStateReadWriteMutex == |
8582 | 0 | GDALAllowReadWriteMutexState::RW_MUTEX_STATE_UNKNOWN) |
8583 | 0 | { |
8584 | | // In case dead-lock would occur, which is not impossible, |
8585 | | // this can be used to prevent it, but at the risk of other |
8586 | | // issues. |
8587 | 0 | if (CPLTestBool( |
8588 | 0 | CPLGetConfigOption("GDAL_ENABLE_READ_WRITE_MUTEX", "YES"))) |
8589 | 0 | { |
8590 | 0 | m_poPrivate->eStateReadWriteMutex = |
8591 | 0 | GDALAllowReadWriteMutexState::RW_MUTEX_STATE_ALLOWED; |
8592 | 0 | } |
8593 | 0 | else |
8594 | 0 | { |
8595 | 0 | m_poPrivate->eStateReadWriteMutex = |
8596 | 0 | GDALAllowReadWriteMutexState::RW_MUTEX_STATE_DISABLED; |
8597 | 0 | } |
8598 | 0 | } |
8599 | 0 | if (m_poPrivate->eStateReadWriteMutex == |
8600 | 0 | GDALAllowReadWriteMutexState::RW_MUTEX_STATE_ALLOWED) |
8601 | 0 | { |
8602 | | // There should be no race related to creating this mutex since |
8603 | | // it should be first created through IWriteBlock() / IRasterIO() |
8604 | | // and then GDALRasterBlock might call it from another thread. |
8605 | | #ifdef DEBUG_VERBOSE |
8606 | | CPLDebug("GDAL", |
8607 | | "[Thread " CPL_FRMT_GIB "] Acquiring RW mutex for %s", |
8608 | | CPLGetPID(), GetDescription()); |
8609 | | #endif |
8610 | 0 | CPLCreateOrAcquireMutex(&(m_poPrivate->hMutex), 1000.0); |
8611 | |
|
8612 | 0 | const int nCountMutex = |
8613 | 0 | m_poPrivate->oMapThreadToMutexTakenCount[CPLGetPID()]++; |
8614 | 0 | if (nCountMutex == 0 && eRWFlag == GF_Read) |
8615 | 0 | { |
8616 | 0 | CPLReleaseMutex(m_poPrivate->hMutex); |
8617 | 0 | for (int i = 0; i < nBands; i++) |
8618 | 0 | { |
8619 | 0 | auto blockCache = papoBands[i]->poBandBlockCache; |
8620 | 0 | if (blockCache) |
8621 | 0 | blockCache->WaitCompletionPendingTasks(); |
8622 | 0 | } |
8623 | 0 | CPLCreateOrAcquireMutex(&(m_poPrivate->hMutex), 1000.0); |
8624 | 0 | } |
8625 | |
|
8626 | 0 | return TRUE; |
8627 | 0 | } |
8628 | 0 | } |
8629 | 0 | return FALSE; |
8630 | 0 | } |
8631 | | |
8632 | | /************************************************************************/ |
8633 | | /* LeaveReadWrite() */ |
8634 | | /************************************************************************/ |
8635 | | |
8636 | | void GDALDataset::LeaveReadWrite() |
8637 | 0 | { |
8638 | 0 | if (m_poPrivate) |
8639 | 0 | { |
8640 | 0 | if (m_poPrivate->poParentDataset) |
8641 | 0 | { |
8642 | 0 | m_poPrivate->poParentDataset->LeaveReadWrite(); |
8643 | 0 | return; |
8644 | 0 | } |
8645 | | |
8646 | 0 | m_poPrivate->oMapThreadToMutexTakenCount[CPLGetPID()]--; |
8647 | 0 | CPLReleaseMutex(m_poPrivate->hMutex); |
8648 | | #ifdef DEBUG_VERBOSE |
8649 | | CPLDebug("GDAL", "[Thread " CPL_FRMT_GIB "] Releasing RW mutex for %s", |
8650 | | CPLGetPID(), GetDescription()); |
8651 | | #endif |
8652 | 0 | } |
8653 | 0 | } |
8654 | | |
8655 | | /************************************************************************/ |
8656 | | /* InitRWLock() */ |
8657 | | /************************************************************************/ |
8658 | | |
8659 | | void GDALDataset::InitRWLock() |
8660 | 0 | { |
8661 | 0 | if (m_poPrivate) |
8662 | 0 | { |
8663 | 0 | if (m_poPrivate->poParentDataset) |
8664 | 0 | { |
8665 | 0 | m_poPrivate->poParentDataset->InitRWLock(); |
8666 | 0 | return; |
8667 | 0 | } |
8668 | | |
8669 | 0 | if (m_poPrivate->eStateReadWriteMutex == |
8670 | 0 | GDALAllowReadWriteMutexState::RW_MUTEX_STATE_UNKNOWN) |
8671 | 0 | { |
8672 | 0 | if (EnterReadWrite(GF_Write)) |
8673 | 0 | LeaveReadWrite(); |
8674 | 0 | } |
8675 | 0 | } |
8676 | 0 | } |
8677 | | |
8678 | | /************************************************************************/ |
8679 | | /* DisableReadWriteMutex() */ |
8680 | | /************************************************************************/ |
8681 | | |
8682 | | // The mutex logic is broken in multi-threaded situations, for example |
8683 | | // with 2 WarpedVRT datasets being read at the same time. In that |
8684 | | // particular case, the mutex is not needed, so allow the VRTWarpedDataset code |
8685 | | // to disable it. |
8686 | | void GDALDataset::DisableReadWriteMutex() |
8687 | 0 | { |
8688 | 0 | if (m_poPrivate) |
8689 | 0 | { |
8690 | 0 | if (m_poPrivate->poParentDataset) |
8691 | 0 | { |
8692 | 0 | m_poPrivate->poParentDataset->DisableReadWriteMutex(); |
8693 | 0 | return; |
8694 | 0 | } |
8695 | | |
8696 | 0 | m_poPrivate->eStateReadWriteMutex = |
8697 | 0 | GDALAllowReadWriteMutexState::RW_MUTEX_STATE_DISABLED; |
8698 | 0 | } |
8699 | 0 | } |
8700 | | |
8701 | | /************************************************************************/ |
8702 | | /* TemporarilyDropReadWriteLock() */ |
8703 | | /************************************************************************/ |
8704 | | |
8705 | | void GDALDataset::TemporarilyDropReadWriteLock() |
8706 | 0 | { |
8707 | 0 | if (m_poPrivate == nullptr) |
8708 | 0 | return; |
8709 | | |
8710 | 0 | if (m_poPrivate->poParentDataset) |
8711 | 0 | { |
8712 | 0 | m_poPrivate->poParentDataset->TemporarilyDropReadWriteLock(); |
8713 | 0 | return; |
8714 | 0 | } |
8715 | | |
8716 | 0 | #ifndef __COVERITY__ |
8717 | 0 | if (m_poPrivate->hMutex) |
8718 | 0 | { |
8719 | | #ifdef DEBUG_VERBOSE |
8720 | | CPLDebug("GDAL", |
8721 | | "[Thread " CPL_FRMT_GIB "] " |
8722 | | "Temporarily drop RW mutex for %s", |
8723 | | CPLGetPID(), GetDescription()); |
8724 | | #endif |
8725 | 0 | CPLAcquireMutex(m_poPrivate->hMutex, 1000.0); |
8726 | 0 | const int nCount = |
8727 | 0 | m_poPrivate->oMapThreadToMutexTakenCount[CPLGetPID()]; |
8728 | | #ifdef DEBUG_EXTRA |
8729 | | m_poPrivate->oMapThreadToMutexTakenCountSaved[CPLGetPID()] = nCount; |
8730 | | #endif |
8731 | 0 | for (int i = 0; i < nCount + 1; i++) |
8732 | 0 | { |
8733 | | // The mutex is recursive |
8734 | 0 | CPLReleaseMutex(m_poPrivate->hMutex); |
8735 | 0 | } |
8736 | 0 | } |
8737 | 0 | #endif |
8738 | 0 | } |
8739 | | |
8740 | | /************************************************************************/ |
8741 | | /* ReacquireReadWriteLock() */ |
8742 | | /************************************************************************/ |
8743 | | |
8744 | | void GDALDataset::ReacquireReadWriteLock() |
8745 | 0 | { |
8746 | 0 | if (m_poPrivate == nullptr) |
8747 | 0 | return; |
8748 | | |
8749 | 0 | if (m_poPrivate->poParentDataset) |
8750 | 0 | { |
8751 | 0 | m_poPrivate->poParentDataset->ReacquireReadWriteLock(); |
8752 | 0 | return; |
8753 | 0 | } |
8754 | | |
8755 | 0 | #ifndef __COVERITY__ |
8756 | 0 | if (m_poPrivate->hMutex) |
8757 | 0 | { |
8758 | | #ifdef DEBUG_VERBOSE |
8759 | | CPLDebug("GDAL", |
8760 | | "[Thread " CPL_FRMT_GIB "] " |
8761 | | "Reacquire temporarily dropped RW mutex for %s", |
8762 | | CPLGetPID(), GetDescription()); |
8763 | | #endif |
8764 | 0 | CPLAcquireMutex(m_poPrivate->hMutex, 1000.0); |
8765 | 0 | const int nCount = |
8766 | 0 | m_poPrivate->oMapThreadToMutexTakenCount[CPLGetPID()]; |
8767 | | #ifdef DEBUG_EXTRA |
8768 | | CPLAssert(nCount == |
8769 | | m_poPrivate->oMapThreadToMutexTakenCountSaved[CPLGetPID()]); |
8770 | | #endif |
8771 | 0 | if (nCount == 0) |
8772 | 0 | CPLReleaseMutex(m_poPrivate->hMutex); |
8773 | 0 | for (int i = 0; i < nCount - 1; i++) |
8774 | 0 | { |
8775 | | // The mutex is recursive |
8776 | 0 | CPLAcquireMutex(m_poPrivate->hMutex, 1000.0); |
8777 | 0 | } |
8778 | 0 | } |
8779 | 0 | #endif |
8780 | 0 | } |
8781 | | |
8782 | | /************************************************************************/ |
8783 | | /* AcquireMutex() */ |
8784 | | /************************************************************************/ |
8785 | | |
8786 | | int GDALDataset::AcquireMutex() |
8787 | 0 | { |
8788 | 0 | if (m_poPrivate == nullptr) |
8789 | 0 | return 0; |
8790 | 0 | if (m_poPrivate->poParentDataset) |
8791 | 0 | { |
8792 | 0 | return m_poPrivate->poParentDataset->AcquireMutex(); |
8793 | 0 | } |
8794 | | |
8795 | 0 | return CPLCreateOrAcquireMutex(&(m_poPrivate->hMutex), 1000.0); |
8796 | 0 | } |
8797 | | |
8798 | | /************************************************************************/ |
8799 | | /* ReleaseMutex() */ |
8800 | | /************************************************************************/ |
8801 | | |
8802 | | void GDALDataset::ReleaseMutex() |
8803 | 0 | { |
8804 | 0 | if (m_poPrivate) |
8805 | 0 | { |
8806 | 0 | if (m_poPrivate->poParentDataset) |
8807 | 0 | { |
8808 | 0 | m_poPrivate->poParentDataset->ReleaseMutex(); |
8809 | 0 | return; |
8810 | 0 | } |
8811 | | |
8812 | 0 | CPLReleaseMutex(m_poPrivate->hMutex); |
8813 | 0 | } |
8814 | 0 | } |
8815 | | |
8816 | | //! @endcond |
8817 | | |
8818 | | /************************************************************************/ |
8819 | | /* GDALDataset::Features::Iterator::Private */ |
8820 | | /************************************************************************/ |
8821 | | |
8822 | | struct GDALDataset::Features::Iterator::Private |
8823 | | { |
8824 | | GDALDataset::FeatureLayerPair m_oPair{}; |
8825 | | GDALDataset *m_poDS = nullptr; |
8826 | | bool m_bEOF = true; |
8827 | | }; |
8828 | | |
8829 | | GDALDataset::Features::Iterator::Iterator(GDALDataset *poDS, bool bStart) |
8830 | 0 | : m_poPrivate(new GDALDataset::Features::Iterator::Private()) |
8831 | 0 | { |
8832 | 0 | m_poPrivate->m_poDS = poDS; |
8833 | 0 | if (bStart) |
8834 | 0 | { |
8835 | 0 | poDS->ResetReading(); |
8836 | 0 | m_poPrivate->m_oPair.feature.reset(poDS->GetNextFeature( |
8837 | 0 | &m_poPrivate->m_oPair.layer, nullptr, nullptr, nullptr)); |
8838 | 0 | m_poPrivate->m_bEOF = m_poPrivate->m_oPair.feature == nullptr; |
8839 | 0 | } |
8840 | 0 | } |
8841 | | |
8842 | 0 | GDALDataset::Features::Iterator::~Iterator() = default; |
8843 | | |
8844 | | const GDALDataset::FeatureLayerPair & |
8845 | | GDALDataset::Features::Iterator::operator*() const |
8846 | 0 | { |
8847 | 0 | return m_poPrivate->m_oPair; |
8848 | 0 | } |
8849 | | |
8850 | | GDALDataset::Features::Iterator &GDALDataset::Features::Iterator::operator++() |
8851 | 0 | { |
8852 | 0 | m_poPrivate->m_oPair.feature.reset(m_poPrivate->m_poDS->GetNextFeature( |
8853 | 0 | &m_poPrivate->m_oPair.layer, nullptr, nullptr, nullptr)); |
8854 | 0 | m_poPrivate->m_bEOF = m_poPrivate->m_oPair.feature == nullptr; |
8855 | 0 | return *this; |
8856 | 0 | } |
8857 | | |
8858 | | bool GDALDataset::Features::Iterator::operator!=(const Iterator &it) const |
8859 | 0 | { |
8860 | 0 | return m_poPrivate->m_bEOF != it.m_poPrivate->m_bEOF; |
8861 | 0 | } |
8862 | | |
8863 | | /************************************************************************/ |
8864 | | /* GetFeatures() */ |
8865 | | /************************************************************************/ |
8866 | | |
8867 | | /** Function that return an iterable object over features in the dataset |
8868 | | * layer. |
8869 | | * |
8870 | | * This is a C++ iterator friendly version of GetNextFeature(). |
8871 | | * |
8872 | | * Using this iterator for standard range-based loops is safe, but |
8873 | | * due to implementation limitations, you shouldn't try to access |
8874 | | * (dereference) more than one iterator step at a time, since the |
8875 | | * FeatureLayerPair reference which is returned is reused. |
8876 | | * |
8877 | | * Typical use is: |
8878 | | * \code{.cpp} |
8879 | | * for( auto&& oFeatureLayerPair: poDS->GetFeatures() ) |
8880 | | * { |
8881 | | * std::cout << "Feature of layer " << |
8882 | | * oFeatureLayerPair.layer->GetName() << std::endl; |
8883 | | * oFeatureLayerPair.feature->DumpReadable(); |
8884 | | * } |
8885 | | * \endcode |
8886 | | * |
8887 | | * @see GetNextFeature() |
8888 | | * |
8889 | | */ |
8890 | | GDALDataset::Features GDALDataset::GetFeatures() |
8891 | 0 | { |
8892 | 0 | return Features(this); |
8893 | 0 | } |
8894 | | |
8895 | | /************************************************************************/ |
8896 | | /* begin() */ |
8897 | | /************************************************************************/ |
8898 | | |
8899 | | /** |
8900 | | \brief Return beginning of feature iterator. |
8901 | | |
8902 | | */ |
8903 | | |
8904 | | const GDALDataset::Features::Iterator GDALDataset::Features::begin() const |
8905 | 0 | { |
8906 | 0 | return {m_poSelf, true}; |
8907 | 0 | } |
8908 | | |
8909 | | /************************************************************************/ |
8910 | | /* end() */ |
8911 | | /************************************************************************/ |
8912 | | |
8913 | | /** |
8914 | | \brief Return end of feature iterator. |
8915 | | |
8916 | | */ |
8917 | | |
8918 | | const GDALDataset::Features::Iterator GDALDataset::Features::end() const |
8919 | 0 | { |
8920 | 0 | return {m_poSelf, false}; |
8921 | 0 | } |
8922 | | |
8923 | | /************************************************************************/ |
8924 | | /* GDALDataset::Layers::Iterator::Private */ |
8925 | | /************************************************************************/ |
8926 | | |
8927 | | struct GDALDataset::Layers::Iterator::Private |
8928 | | { |
8929 | | OGRLayer *m_poLayer = nullptr; |
8930 | | int m_iCurLayer = 0; |
8931 | | int m_nLayerCount = 0; |
8932 | | GDALDataset *m_poDS = nullptr; |
8933 | | }; |
8934 | | |
8935 | 0 | GDALDataset::Layers::Iterator::Iterator() : m_poPrivate(new Private()) |
8936 | 0 | { |
8937 | 0 | } |
8938 | | |
8939 | | // False positive of cppcheck 1.72 |
8940 | | // cppcheck-suppress uninitMemberVar |
8941 | | GDALDataset::Layers::Iterator::Iterator(const Iterator &oOther) |
8942 | 0 | : m_poPrivate(new Private(*(oOther.m_poPrivate))) |
8943 | 0 | { |
8944 | 0 | } |
8945 | | |
8946 | | GDALDataset::Layers::Iterator::Iterator(Iterator &&oOther) noexcept |
8947 | 0 | : m_poPrivate(std::move(oOther.m_poPrivate)) |
8948 | 0 | { |
8949 | 0 | } |
8950 | | |
8951 | | GDALDataset::Layers::Iterator::Iterator(GDALDataset *poDS, bool bStart) |
8952 | 0 | : m_poPrivate(new Private()) |
8953 | 0 | { |
8954 | 0 | m_poPrivate->m_poDS = poDS; |
8955 | 0 | m_poPrivate->m_nLayerCount = poDS->GetLayerCount(); |
8956 | 0 | if (bStart) |
8957 | 0 | { |
8958 | 0 | if (m_poPrivate->m_nLayerCount) |
8959 | 0 | m_poPrivate->m_poLayer = poDS->GetLayer(0); |
8960 | 0 | } |
8961 | 0 | else |
8962 | 0 | { |
8963 | 0 | m_poPrivate->m_iCurLayer = m_poPrivate->m_nLayerCount; |
8964 | 0 | } |
8965 | 0 | } |
8966 | | |
8967 | 0 | GDALDataset::Layers::Iterator::~Iterator() = default; |
8968 | | |
8969 | | // False positive of cppcheck 1.72 |
8970 | | // cppcheck-suppress operatorEqVarError |
8971 | | GDALDataset::Layers::Iterator & |
8972 | | GDALDataset::Layers::Iterator::operator=(const Iterator &oOther) |
8973 | 0 | { |
8974 | 0 | *m_poPrivate = *oOther.m_poPrivate; |
8975 | 0 | return *this; |
8976 | 0 | } |
8977 | | |
8978 | | GDALDataset::Layers::Iterator &GDALDataset::Layers::Iterator::operator=( |
8979 | | GDALDataset::Layers::Iterator &&oOther) noexcept |
8980 | 0 | { |
8981 | 0 | m_poPrivate = std::move(oOther.m_poPrivate); |
8982 | 0 | return *this; |
8983 | 0 | } |
8984 | | |
8985 | | OGRLayer *GDALDataset::Layers::Iterator::operator*() const |
8986 | 0 | { |
8987 | 0 | return m_poPrivate->m_poLayer; |
8988 | 0 | } |
8989 | | |
8990 | | GDALDataset::Layers::Iterator &GDALDataset::Layers::Iterator::operator++() |
8991 | 0 | { |
8992 | 0 | m_poPrivate->m_iCurLayer++; |
8993 | 0 | if (m_poPrivate->m_iCurLayer < m_poPrivate->m_nLayerCount) |
8994 | 0 | { |
8995 | 0 | m_poPrivate->m_poLayer = |
8996 | 0 | m_poPrivate->m_poDS->GetLayer(m_poPrivate->m_iCurLayer); |
8997 | 0 | } |
8998 | 0 | else |
8999 | 0 | { |
9000 | 0 | m_poPrivate->m_poLayer = nullptr; |
9001 | 0 | } |
9002 | 0 | return *this; |
9003 | 0 | } |
9004 | | |
9005 | | GDALDataset::Layers::Iterator GDALDataset::Layers::Iterator::operator++(int) |
9006 | 0 | { |
9007 | 0 | GDALDataset::Layers::Iterator temp = *this; |
9008 | 0 | ++(*this); |
9009 | 0 | return temp; |
9010 | 0 | } |
9011 | | |
9012 | | bool GDALDataset::Layers::Iterator::operator!=(const Iterator &it) const |
9013 | 0 | { |
9014 | 0 | return m_poPrivate->m_iCurLayer != it.m_poPrivate->m_iCurLayer; |
9015 | 0 | } |
9016 | | |
9017 | | /************************************************************************/ |
9018 | | /* GetLayers() */ |
9019 | | /************************************************************************/ |
9020 | | |
9021 | | /** Function that returns an iterable object over layers in the dataset. |
9022 | | * |
9023 | | * This is a C++ iterator friendly version of GetLayer(). |
9024 | | * |
9025 | | * Typical use is: |
9026 | | * \code{.cpp} |
9027 | | * for( auto&& poLayer: poDS->GetLayers() ) |
9028 | | * { |
9029 | | * std::cout << "Layer << poLayer->GetName() << std::endl; |
9030 | | * } |
9031 | | * \endcode |
9032 | | * |
9033 | | * @see GetLayer() |
9034 | | * |
9035 | | */ |
9036 | | GDALDataset::Layers GDALDataset::GetLayers() |
9037 | 0 | { |
9038 | 0 | return Layers(this); |
9039 | 0 | } |
9040 | | |
9041 | | /************************************************************************/ |
9042 | | /* begin() */ |
9043 | | /************************************************************************/ |
9044 | | |
9045 | | /** |
9046 | | \brief Return beginning of layer iterator. |
9047 | | |
9048 | | */ |
9049 | | |
9050 | | GDALDataset::Layers::Iterator GDALDataset::Layers::begin() const |
9051 | 0 | { |
9052 | 0 | return {m_poSelf, true}; |
9053 | 0 | } |
9054 | | |
9055 | | /************************************************************************/ |
9056 | | /* end() */ |
9057 | | /************************************************************************/ |
9058 | | |
9059 | | /** |
9060 | | \brief Return end of layer iterator. |
9061 | | |
9062 | | */ |
9063 | | |
9064 | | GDALDataset::Layers::Iterator GDALDataset::Layers::end() const |
9065 | 0 | { |
9066 | 0 | return {m_poSelf, false}; |
9067 | 0 | } |
9068 | | |
9069 | | /************************************************************************/ |
9070 | | /* size() */ |
9071 | | /************************************************************************/ |
9072 | | |
9073 | | /** |
9074 | | \brief Get the number of layers in this dataset. |
9075 | | |
9076 | | @return layer count. |
9077 | | |
9078 | | */ |
9079 | | |
9080 | | size_t GDALDataset::Layers::size() const |
9081 | 0 | { |
9082 | 0 | return static_cast<size_t>(m_poSelf->GetLayerCount()); |
9083 | 0 | } |
9084 | | |
9085 | | /************************************************************************/ |
9086 | | /* operator[]() */ |
9087 | | /************************************************************************/ |
9088 | | /** |
9089 | | \brief Fetch a layer by index. |
9090 | | |
9091 | | The returned layer remains owned by the |
9092 | | GDALDataset and should not be deleted by the application. |
9093 | | |
9094 | | @param iLayer a layer number between 0 and size()-1. |
9095 | | |
9096 | | @return the layer, or nullptr if iLayer is out of range or an error occurs. |
9097 | | |
9098 | | */ |
9099 | | |
9100 | | OGRLayer *GDALDataset::Layers::operator[](int iLayer) |
9101 | 0 | { |
9102 | 0 | return m_poSelf->GetLayer(iLayer); |
9103 | 0 | } |
9104 | | |
9105 | | /************************************************************************/ |
9106 | | /* operator[]() */ |
9107 | | /************************************************************************/ |
9108 | | /** |
9109 | | \brief Fetch a layer by index. |
9110 | | |
9111 | | The returned layer remains owned by the |
9112 | | GDALDataset and should not be deleted by the application. |
9113 | | |
9114 | | @param iLayer a layer number between 0 and size()-1. |
9115 | | |
9116 | | @return the layer, or nullptr if iLayer is out of range or an error occurs. |
9117 | | |
9118 | | */ |
9119 | | |
9120 | | OGRLayer *GDALDataset::Layers::operator[](size_t iLayer) |
9121 | 0 | { |
9122 | 0 | return m_poSelf->GetLayer(static_cast<int>(iLayer)); |
9123 | 0 | } |
9124 | | |
9125 | | /************************************************************************/ |
9126 | | /* operator[]() */ |
9127 | | /************************************************************************/ |
9128 | | /** |
9129 | | \brief Fetch a layer by name. |
9130 | | |
9131 | | The returned layer remains owned by the |
9132 | | GDALDataset and should not be deleted by the application. |
9133 | | |
9134 | | @param pszLayerName layer name |
9135 | | |
9136 | | @return the layer, or nullptr if pszLayerName does not match with a layer |
9137 | | |
9138 | | */ |
9139 | | |
9140 | | OGRLayer *GDALDataset::Layers::operator[](const char *pszLayerName) |
9141 | 0 | { |
9142 | 0 | return m_poSelf->GetLayerByName(pszLayerName); |
9143 | 0 | } |
9144 | | |
9145 | | /************************************************************************/ |
9146 | | /* GDALDataset::ConstLayers::Iterator::Private */ |
9147 | | /************************************************************************/ |
9148 | | |
9149 | | struct GDALDataset::ConstLayers::Iterator::Private |
9150 | | { |
9151 | | const OGRLayer *m_poLayer = nullptr; |
9152 | | int m_iCurLayer = 0; |
9153 | | int m_nLayerCount = 0; |
9154 | | const GDALDataset *m_poDS = nullptr; |
9155 | | }; |
9156 | | |
9157 | 0 | GDALDataset::ConstLayers::Iterator::Iterator() : m_poPrivate(new Private()) |
9158 | 0 | { |
9159 | 0 | } |
9160 | | |
9161 | | // False positive of cppcheck 1.72 |
9162 | | // cppcheck-suppress uninitMemberVar |
9163 | | GDALDataset::ConstLayers::Iterator::Iterator(const Iterator &oOther) |
9164 | 0 | : m_poPrivate(new Private(*(oOther.m_poPrivate))) |
9165 | 0 | { |
9166 | 0 | } |
9167 | | |
9168 | | GDALDataset::ConstLayers::Iterator::Iterator(Iterator &&oOther) noexcept |
9169 | 0 | : m_poPrivate(std::move(oOther.m_poPrivate)) |
9170 | 0 | { |
9171 | 0 | } |
9172 | | |
9173 | | GDALDataset::ConstLayers::Iterator::Iterator(const GDALDataset *poDS, |
9174 | | bool bStart) |
9175 | 0 | : m_poPrivate(new Private()) |
9176 | 0 | { |
9177 | 0 | m_poPrivate->m_poDS = poDS; |
9178 | 0 | m_poPrivate->m_nLayerCount = poDS->GetLayerCount(); |
9179 | 0 | if (bStart) |
9180 | 0 | { |
9181 | 0 | if (m_poPrivate->m_nLayerCount) |
9182 | 0 | m_poPrivate->m_poLayer = poDS->GetLayer(0); |
9183 | 0 | } |
9184 | 0 | else |
9185 | 0 | { |
9186 | 0 | m_poPrivate->m_iCurLayer = m_poPrivate->m_nLayerCount; |
9187 | 0 | } |
9188 | 0 | } |
9189 | | |
9190 | 0 | GDALDataset::ConstLayers::Iterator::~Iterator() = default; |
9191 | | |
9192 | | // False positive of cppcheck 1.72 |
9193 | | // cppcheck-suppress operatorEqVarError |
9194 | | GDALDataset::ConstLayers::Iterator & |
9195 | | GDALDataset::ConstLayers::Iterator::operator=(const Iterator &oOther) |
9196 | 0 | { |
9197 | 0 | *m_poPrivate = *oOther.m_poPrivate; |
9198 | 0 | return *this; |
9199 | 0 | } |
9200 | | |
9201 | | GDALDataset::ConstLayers::Iterator & |
9202 | | GDALDataset::ConstLayers::Iterator::operator=( |
9203 | | GDALDataset::ConstLayers::Iterator &&oOther) noexcept |
9204 | 0 | { |
9205 | 0 | m_poPrivate = std::move(oOther.m_poPrivate); |
9206 | 0 | return *this; |
9207 | 0 | } |
9208 | | |
9209 | | const OGRLayer *GDALDataset::ConstLayers::Iterator::operator*() const |
9210 | 0 | { |
9211 | 0 | return m_poPrivate->m_poLayer; |
9212 | 0 | } |
9213 | | |
9214 | | GDALDataset::ConstLayers::Iterator & |
9215 | | GDALDataset::ConstLayers::Iterator::operator++() |
9216 | 0 | { |
9217 | 0 | m_poPrivate->m_iCurLayer++; |
9218 | 0 | if (m_poPrivate->m_iCurLayer < m_poPrivate->m_nLayerCount) |
9219 | 0 | { |
9220 | 0 | m_poPrivate->m_poLayer = |
9221 | 0 | m_poPrivate->m_poDS->GetLayer(m_poPrivate->m_iCurLayer); |
9222 | 0 | } |
9223 | 0 | else |
9224 | 0 | { |
9225 | 0 | m_poPrivate->m_poLayer = nullptr; |
9226 | 0 | } |
9227 | 0 | return *this; |
9228 | 0 | } |
9229 | | |
9230 | | GDALDataset::ConstLayers::Iterator |
9231 | | GDALDataset::ConstLayers::Iterator::operator++(int) |
9232 | 0 | { |
9233 | 0 | GDALDataset::ConstLayers::Iterator temp = *this; |
9234 | 0 | ++(*this); |
9235 | 0 | return temp; |
9236 | 0 | } |
9237 | | |
9238 | | bool GDALDataset::ConstLayers::Iterator::operator!=(const Iterator &it) const |
9239 | 0 | { |
9240 | 0 | return m_poPrivate->m_iCurLayer != it.m_poPrivate->m_iCurLayer; |
9241 | 0 | } |
9242 | | |
9243 | | /************************************************************************/ |
9244 | | /* GetLayers() */ |
9245 | | /************************************************************************/ |
9246 | | |
9247 | | /** Function that returns an iterable object over layers in the dataset. |
9248 | | * |
9249 | | * This is a C++ iterator friendly version of GetLayer(). |
9250 | | * |
9251 | | * Typical use is: |
9252 | | * \code{.cpp} |
9253 | | * for( auto&& poLayer: poDS->GetLayers() ) |
9254 | | * { |
9255 | | * std::cout << "Layer << poLayer->GetName() << std::endl; |
9256 | | * } |
9257 | | * \endcode |
9258 | | * |
9259 | | * @see GetLayer() |
9260 | | * |
9261 | | * @since GDAL 3.12 |
9262 | | */ |
9263 | | GDALDataset::ConstLayers GDALDataset::GetLayers() const |
9264 | 0 | { |
9265 | 0 | return ConstLayers(this); |
9266 | 0 | } |
9267 | | |
9268 | | /************************************************************************/ |
9269 | | /* begin() */ |
9270 | | /************************************************************************/ |
9271 | | |
9272 | | /** |
9273 | | \brief Return beginning of layer iterator. |
9274 | | |
9275 | | @since GDAL 3.12 |
9276 | | */ |
9277 | | |
9278 | | GDALDataset::ConstLayers::Iterator GDALDataset::ConstLayers::begin() const |
9279 | 0 | { |
9280 | 0 | return {m_poSelf, true}; |
9281 | 0 | } |
9282 | | |
9283 | | /************************************************************************/ |
9284 | | /* end() */ |
9285 | | /************************************************************************/ |
9286 | | |
9287 | | /** |
9288 | | \brief Return end of layer iterator. |
9289 | | |
9290 | | @since GDAL 3.12 |
9291 | | */ |
9292 | | |
9293 | | GDALDataset::ConstLayers::Iterator GDALDataset::ConstLayers::end() const |
9294 | 0 | { |
9295 | 0 | return {m_poSelf, false}; |
9296 | 0 | } |
9297 | | |
9298 | | /************************************************************************/ |
9299 | | /* size() */ |
9300 | | /************************************************************************/ |
9301 | | |
9302 | | /** |
9303 | | \brief Get the number of layers in this dataset. |
9304 | | |
9305 | | @return layer count. |
9306 | | |
9307 | | @since GDAL 3.12 |
9308 | | */ |
9309 | | |
9310 | | size_t GDALDataset::ConstLayers::size() const |
9311 | 0 | { |
9312 | 0 | return static_cast<size_t>(m_poSelf->GetLayerCount()); |
9313 | 0 | } |
9314 | | |
9315 | | /************************************************************************/ |
9316 | | /* operator[]() */ |
9317 | | /************************************************************************/ |
9318 | | /** |
9319 | | \brief Fetch a layer by index. |
9320 | | |
9321 | | The returned layer remains owned by the |
9322 | | GDALDataset and should not be deleted by the application. |
9323 | | |
9324 | | @param iLayer a layer number between 0 and size()-1. |
9325 | | |
9326 | | @return the layer, or nullptr if iLayer is out of range or an error occurs. |
9327 | | |
9328 | | @since GDAL 3.12 |
9329 | | */ |
9330 | | |
9331 | | const OGRLayer *GDALDataset::ConstLayers::operator[](int iLayer) |
9332 | 0 | { |
9333 | 0 | return m_poSelf->GetLayer(iLayer); |
9334 | 0 | } |
9335 | | |
9336 | | /************************************************************************/ |
9337 | | /* operator[]() */ |
9338 | | /************************************************************************/ |
9339 | | /** |
9340 | | \brief Fetch a layer by index. |
9341 | | |
9342 | | The returned layer remains owned by the |
9343 | | GDALDataset and should not be deleted by the application. |
9344 | | |
9345 | | @param iLayer a layer number between 0 and size()-1. |
9346 | | |
9347 | | @return the layer, or nullptr if iLayer is out of range or an error occurs. |
9348 | | |
9349 | | @since GDAL 3.12 |
9350 | | */ |
9351 | | |
9352 | | const OGRLayer *GDALDataset::ConstLayers::operator[](size_t iLayer) |
9353 | 0 | { |
9354 | 0 | return m_poSelf->GetLayer(static_cast<int>(iLayer)); |
9355 | 0 | } |
9356 | | |
9357 | | /************************************************************************/ |
9358 | | /* operator[]() */ |
9359 | | /************************************************************************/ |
9360 | | /** |
9361 | | \brief Fetch a layer by name. |
9362 | | |
9363 | | The returned layer remains owned by the |
9364 | | GDALDataset and should not be deleted by the application. |
9365 | | |
9366 | | @param pszLayerName layer name |
9367 | | |
9368 | | @return the layer, or nullptr if pszLayerName does not match with a layer |
9369 | | |
9370 | | @since GDAL 3.12 |
9371 | | */ |
9372 | | |
9373 | | const OGRLayer *GDALDataset::ConstLayers::operator[](const char *pszLayerName) |
9374 | 0 | { |
9375 | 0 | return const_cast<GDALDataset *>(m_poSelf)->GetLayerByName(pszLayerName); |
9376 | 0 | } |
9377 | | |
9378 | | /************************************************************************/ |
9379 | | /* GDALDataset::Bands::Iterator::Private */ |
9380 | | /************************************************************************/ |
9381 | | |
9382 | | struct GDALDataset::Bands::Iterator::Private |
9383 | | { |
9384 | | GDALRasterBand *m_poBand = nullptr; |
9385 | | int m_iCurBand = 0; |
9386 | | int m_nBandCount = 0; |
9387 | | GDALDataset *m_poDS = nullptr; |
9388 | | }; |
9389 | | |
9390 | | GDALDataset::Bands::Iterator::Iterator(GDALDataset *poDS, bool bStart) |
9391 | 0 | : m_poPrivate(new GDALDataset::Bands::Iterator::Private()) |
9392 | 0 | { |
9393 | 0 | m_poPrivate->m_poDS = poDS; |
9394 | 0 | m_poPrivate->m_nBandCount = poDS->GetRasterCount(); |
9395 | 0 | if (bStart) |
9396 | 0 | { |
9397 | 0 | if (m_poPrivate->m_nBandCount) |
9398 | 0 | m_poPrivate->m_poBand = poDS->GetRasterBand(1); |
9399 | 0 | } |
9400 | 0 | else |
9401 | 0 | { |
9402 | 0 | m_poPrivate->m_iCurBand = m_poPrivate->m_nBandCount; |
9403 | 0 | } |
9404 | 0 | } |
9405 | | |
9406 | 0 | GDALDataset::Bands::Iterator::~Iterator() = default; |
9407 | | |
9408 | | GDALRasterBand *GDALDataset::Bands::Iterator::operator*() |
9409 | 0 | { |
9410 | 0 | return m_poPrivate->m_poBand; |
9411 | 0 | } |
9412 | | |
9413 | | GDALDataset::Bands::Iterator &GDALDataset::Bands::Iterator::operator++() |
9414 | 0 | { |
9415 | 0 | m_poPrivate->m_iCurBand++; |
9416 | 0 | if (m_poPrivate->m_iCurBand < m_poPrivate->m_nBandCount) |
9417 | 0 | { |
9418 | 0 | m_poPrivate->m_poBand = |
9419 | 0 | m_poPrivate->m_poDS->GetRasterBand(1 + m_poPrivate->m_iCurBand); |
9420 | 0 | } |
9421 | 0 | else |
9422 | 0 | { |
9423 | 0 | m_poPrivate->m_poBand = nullptr; |
9424 | 0 | } |
9425 | 0 | return *this; |
9426 | 0 | } |
9427 | | |
9428 | | bool GDALDataset::Bands::Iterator::operator!=(const Iterator &it) const |
9429 | 0 | { |
9430 | 0 | return m_poPrivate->m_iCurBand != it.m_poPrivate->m_iCurBand; |
9431 | 0 | } |
9432 | | |
9433 | | /************************************************************************/ |
9434 | | /* GetBands() */ |
9435 | | /************************************************************************/ |
9436 | | |
9437 | | /** Function that returns an iterable object over GDALRasterBand in the dataset. |
9438 | | * |
9439 | | * This is a C++ iterator friendly version of GetRasterBand(). |
9440 | | * |
9441 | | * Typical use is: |
9442 | | * \code{.cpp} |
9443 | | * for( auto&& poBand: poDS->GetBands() ) |
9444 | | * { |
9445 | | * std::cout << "Band << poBand->GetDescription() << std::endl; |
9446 | | * } |
9447 | | * \endcode |
9448 | | * |
9449 | | * @see GetRasterBand() |
9450 | | * |
9451 | | */ |
9452 | | GDALDataset::Bands GDALDataset::GetBands() |
9453 | 0 | { |
9454 | 0 | return Bands(this); |
9455 | 0 | } |
9456 | | |
9457 | | /************************************************************************/ |
9458 | | /* begin() */ |
9459 | | /************************************************************************/ |
9460 | | |
9461 | | /** |
9462 | | \brief Return beginning of band iterator. |
9463 | | |
9464 | | */ |
9465 | | |
9466 | | const GDALDataset::Bands::Iterator GDALDataset::Bands::begin() const |
9467 | 0 | { |
9468 | 0 | return {m_poSelf, true}; |
9469 | 0 | } |
9470 | | |
9471 | | /************************************************************************/ |
9472 | | /* end() */ |
9473 | | /************************************************************************/ |
9474 | | |
9475 | | /** |
9476 | | \brief Return end of band iterator. |
9477 | | |
9478 | | */ |
9479 | | |
9480 | | const GDALDataset::Bands::Iterator GDALDataset::Bands::end() const |
9481 | 0 | { |
9482 | 0 | return {m_poSelf, false}; |
9483 | 0 | } |
9484 | | |
9485 | | /************************************************************************/ |
9486 | | /* size() */ |
9487 | | /************************************************************************/ |
9488 | | |
9489 | | /** |
9490 | | \brief Get the number of raster bands in this dataset. |
9491 | | |
9492 | | @return raster band count. |
9493 | | |
9494 | | */ |
9495 | | |
9496 | | size_t GDALDataset::Bands::size() const |
9497 | 0 | { |
9498 | 0 | return static_cast<size_t>(m_poSelf->GetRasterCount()); |
9499 | 0 | } |
9500 | | |
9501 | | /************************************************************************/ |
9502 | | /* operator[]() */ |
9503 | | /************************************************************************/ |
9504 | | /** |
9505 | | \brief Fetch a raster band by index. |
9506 | | |
9507 | | The returned band remains owned by the |
9508 | | GDALDataset and should not be deleted by the application. |
9509 | | |
9510 | | @warning Contrary to GDALDataset::GetRasterBand(), the indexing here is |
9511 | | consistent with the conventions of C/C++, i.e. starting at 0. |
9512 | | |
9513 | | @param iBand a band index between 0 and size()-1. |
9514 | | |
9515 | | @return the band, or nullptr if iBand is out of range or an error occurs. |
9516 | | |
9517 | | */ |
9518 | | |
9519 | | GDALRasterBand *GDALDataset::Bands::operator[](int iBand) |
9520 | 0 | { |
9521 | 0 | return m_poSelf->GetRasterBand(1 + iBand); |
9522 | 0 | } |
9523 | | |
9524 | | /************************************************************************/ |
9525 | | /* operator[]() */ |
9526 | | /************************************************************************/ |
9527 | | |
9528 | | /** |
9529 | | \brief Fetch a raster band by index. |
9530 | | |
9531 | | The returned band remains owned by the |
9532 | | GDALDataset and should not be deleted by the application. |
9533 | | |
9534 | | @warning Contrary to GDALDataset::GetRasterBand(), the indexing here is |
9535 | | consistent with the conventions of C/C++, i.e. starting at 0. |
9536 | | |
9537 | | @param iBand a band index between 0 and size()-1. |
9538 | | |
9539 | | @return the band, or nullptr if iBand is out of range or an error occurs. |
9540 | | |
9541 | | */ |
9542 | | |
9543 | | GDALRasterBand *GDALDataset::Bands::operator[](size_t iBand) |
9544 | 0 | { |
9545 | 0 | return m_poSelf->GetRasterBand(1 + static_cast<int>(iBand)); |
9546 | 0 | } |
9547 | | |
9548 | | /************************************************************************/ |
9549 | | /* GDALDataset::ConstBands::Iterator::Private */ |
9550 | | /************************************************************************/ |
9551 | | |
9552 | | struct GDALDataset::ConstBands::Iterator::Private |
9553 | | { |
9554 | | const GDALRasterBand *m_poBand = nullptr; |
9555 | | int m_iCurBand = 0; |
9556 | | int m_nBandCount = 0; |
9557 | | const GDALDataset *m_poDS = nullptr; |
9558 | | }; |
9559 | | |
9560 | | GDALDataset::ConstBands::Iterator::Iterator(const GDALDataset *poDS, |
9561 | | bool bStart) |
9562 | 0 | : m_poPrivate(new GDALDataset::ConstBands::Iterator::Private()) |
9563 | 0 | { |
9564 | 0 | m_poPrivate->m_poDS = poDS; |
9565 | 0 | m_poPrivate->m_nBandCount = poDS->GetRasterCount(); |
9566 | 0 | if (bStart) |
9567 | 0 | { |
9568 | 0 | if (m_poPrivate->m_nBandCount) |
9569 | 0 | m_poPrivate->m_poBand = poDS->GetRasterBand(1); |
9570 | 0 | } |
9571 | 0 | else |
9572 | 0 | { |
9573 | 0 | m_poPrivate->m_iCurBand = m_poPrivate->m_nBandCount; |
9574 | 0 | } |
9575 | 0 | } |
9576 | | |
9577 | 0 | GDALDataset::ConstBands::Iterator::~Iterator() = default; |
9578 | | |
9579 | | const GDALRasterBand *GDALDataset::ConstBands::Iterator::operator*() const |
9580 | 0 | { |
9581 | 0 | return m_poPrivate->m_poBand; |
9582 | 0 | } |
9583 | | |
9584 | | GDALDataset::ConstBands::Iterator & |
9585 | | GDALDataset::ConstBands::Iterator::operator++() |
9586 | 0 | { |
9587 | 0 | m_poPrivate->m_iCurBand++; |
9588 | 0 | if (m_poPrivate->m_iCurBand < m_poPrivate->m_nBandCount) |
9589 | 0 | { |
9590 | 0 | m_poPrivate->m_poBand = |
9591 | 0 | m_poPrivate->m_poDS->GetRasterBand(1 + m_poPrivate->m_iCurBand); |
9592 | 0 | } |
9593 | 0 | else |
9594 | 0 | { |
9595 | 0 | m_poPrivate->m_poBand = nullptr; |
9596 | 0 | } |
9597 | 0 | return *this; |
9598 | 0 | } |
9599 | | |
9600 | | bool GDALDataset::ConstBands::Iterator::operator!=(const Iterator &it) const |
9601 | 0 | { |
9602 | 0 | return m_poPrivate->m_iCurBand != it.m_poPrivate->m_iCurBand; |
9603 | 0 | } |
9604 | | |
9605 | | /************************************************************************/ |
9606 | | /* GetBands() */ |
9607 | | /************************************************************************/ |
9608 | | |
9609 | | /** Function that returns an iterable object over GDALRasterBand in the dataset. |
9610 | | * |
9611 | | * This is a C++ iterator friendly version of GetRasterBand(). |
9612 | | * |
9613 | | * Typical use is: |
9614 | | * \code{.cpp} |
9615 | | * for( const auto* poBand: poDS->GetConstBands() ) |
9616 | | * { |
9617 | | * std::cout << "Band << poBand->GetDescription() << std::endl; |
9618 | | * } |
9619 | | * \endcode |
9620 | | * |
9621 | | * @see GetRasterBand() |
9622 | | * |
9623 | | * @since GDAL 3.12 |
9624 | | */ |
9625 | | GDALDataset::ConstBands GDALDataset::GetBands() const |
9626 | 0 | { |
9627 | 0 | return ConstBands(this); |
9628 | 0 | } |
9629 | | |
9630 | | /************************************************************************/ |
9631 | | /* begin() */ |
9632 | | /************************************************************************/ |
9633 | | |
9634 | | /** |
9635 | | \brief Return beginning of band iterator. |
9636 | | |
9637 | | @since GDAL 3.12 |
9638 | | */ |
9639 | | |
9640 | | const GDALDataset::ConstBands::Iterator GDALDataset::ConstBands::begin() const |
9641 | 0 | { |
9642 | 0 | return {m_poSelf, true}; |
9643 | 0 | } |
9644 | | |
9645 | | /************************************************************************/ |
9646 | | /* end() */ |
9647 | | /************************************************************************/ |
9648 | | |
9649 | | /** |
9650 | | \brief Return end of band iterator. |
9651 | | |
9652 | | @since GDAL 3.12 |
9653 | | */ |
9654 | | |
9655 | | const GDALDataset::ConstBands::Iterator GDALDataset::ConstBands::end() const |
9656 | 0 | { |
9657 | 0 | return {m_poSelf, false}; |
9658 | 0 | } |
9659 | | |
9660 | | /************************************************************************/ |
9661 | | /* size() */ |
9662 | | /************************************************************************/ |
9663 | | |
9664 | | /** |
9665 | | \brief Get the number of raster bands in this dataset. |
9666 | | |
9667 | | @return raster band count. |
9668 | | |
9669 | | @since GDAL 3.12 |
9670 | | */ |
9671 | | |
9672 | | size_t GDALDataset::ConstBands::size() const |
9673 | 0 | { |
9674 | 0 | return static_cast<size_t>(m_poSelf->GetRasterCount()); |
9675 | 0 | } |
9676 | | |
9677 | | /************************************************************************/ |
9678 | | /* operator[]() */ |
9679 | | /************************************************************************/ |
9680 | | /** |
9681 | | \brief Fetch a raster band by index. |
9682 | | |
9683 | | The returned band remains owned by the |
9684 | | GDALDataset and should not be deleted by the application. |
9685 | | |
9686 | | @warning Contrary to GDALDataset::GetRasterBand(), the indexing here is |
9687 | | consistent with the conventions of C/C++, i.e. starting at 0. |
9688 | | |
9689 | | @param iBand a band index between 0 and size()-1. |
9690 | | |
9691 | | @return the band, or nullptr if iBand is out of range or an error occurs. |
9692 | | |
9693 | | @since GDAL 3.12 |
9694 | | */ |
9695 | | |
9696 | | const GDALRasterBand *GDALDataset::ConstBands::operator[](int iBand) const |
9697 | 0 | { |
9698 | 0 | return m_poSelf->GetRasterBand(1 + iBand); |
9699 | 0 | } |
9700 | | |
9701 | | /************************************************************************/ |
9702 | | /* operator[]() */ |
9703 | | /************************************************************************/ |
9704 | | |
9705 | | /** |
9706 | | \brief Fetch a raster band by index. |
9707 | | |
9708 | | The returned band remains owned by the |
9709 | | GDALDataset and should not be deleted by the application. |
9710 | | |
9711 | | @warning Contrary to GDALDataset::GetRasterBand(), the indexing here is |
9712 | | consistent with the conventions of C/C++, i.e. starting at 0. |
9713 | | |
9714 | | @param iBand a band index between 0 and size()-1. |
9715 | | |
9716 | | @return the band, or nullptr if iBand is out of range or an error occurs. |
9717 | | |
9718 | | @since GDAL 3.12 |
9719 | | */ |
9720 | | |
9721 | | const GDALRasterBand *GDALDataset::ConstBands::operator[](size_t iBand) const |
9722 | 0 | { |
9723 | 0 | return m_poSelf->GetRasterBand(1 + static_cast<int>(iBand)); |
9724 | 0 | } |
9725 | | |
9726 | | /************************************************************************/ |
9727 | | /* GetRootGroup() */ |
9728 | | /************************************************************************/ |
9729 | | |
9730 | | /** |
9731 | | \brief Return the root GDALGroup of this dataset. |
9732 | | |
9733 | | Only valid for multidimensional datasets. |
9734 | | |
9735 | | This is the same as the C function GDALDatasetGetRootGroup(). |
9736 | | |
9737 | | @since GDAL 3.1 |
9738 | | */ |
9739 | | |
9740 | | std::shared_ptr<GDALGroup> GDALDataset::GetRootGroup() const |
9741 | 0 | { |
9742 | 0 | return nullptr; |
9743 | 0 | } |
9744 | | |
9745 | | /************************************************************************/ |
9746 | | /* GetRawBinaryLayout() */ |
9747 | | /************************************************************************/ |
9748 | | |
9749 | | //! @cond Doxygen_Suppress |
9750 | | /** |
9751 | | \brief Return the layout of a dataset that can be considered as a raw binary |
9752 | | format. |
9753 | | |
9754 | | @param sLayout Structure that will be set if the dataset is a raw binary one. |
9755 | | @return true if the dataset is a raw binary one. |
9756 | | @since GDAL 3.1 |
9757 | | */ |
9758 | | |
9759 | | bool GDALDataset::GetRawBinaryLayout(RawBinaryLayout &sLayout) |
9760 | 0 | { |
9761 | 0 | CPL_IGNORE_RET_VAL(sLayout); |
9762 | 0 | return false; |
9763 | 0 | } |
9764 | | |
9765 | | //! @endcond |
9766 | | |
9767 | | /************************************************************************/ |
9768 | | /* ClearStatistics() */ |
9769 | | /************************************************************************/ |
9770 | | |
9771 | | /** |
9772 | | \brief Clear statistics |
9773 | | |
9774 | | Only implemented for now in PAM supported datasets |
9775 | | |
9776 | | This is the same as the C function GDALDatasetClearStatistics(). |
9777 | | |
9778 | | @since GDAL 3.2 |
9779 | | */ |
9780 | | |
9781 | | void GDALDataset::ClearStatistics() |
9782 | 0 | { |
9783 | 0 | auto poRootGroup = GetRootGroup(); |
9784 | 0 | if (poRootGroup) |
9785 | 0 | poRootGroup->ClearStatistics(); |
9786 | 0 | } |
9787 | | |
9788 | | /************************************************************************/ |
9789 | | /* GDALDatasetClearStatistics() */ |
9790 | | /************************************************************************/ |
9791 | | |
9792 | | /** |
9793 | | \brief Clear statistics |
9794 | | |
9795 | | This is the same as the C++ method GDALDataset::ClearStatistics(). |
9796 | | |
9797 | | @since GDAL 3.2 |
9798 | | */ |
9799 | | |
9800 | | void GDALDatasetClearStatistics(GDALDatasetH hDS) |
9801 | 0 | { |
9802 | 0 | VALIDATE_POINTER0(hDS, __func__); |
9803 | 0 | GDALDataset::FromHandle(hDS)->ClearStatistics(); |
9804 | 0 | } |
9805 | | |
9806 | | /************************************************************************/ |
9807 | | /* GetFieldDomainNames() */ |
9808 | | /************************************************************************/ |
9809 | | |
9810 | | /** Returns a list of the names of all field domains stored in the dataset. |
9811 | | * |
9812 | | * @note The default implementation assumes that drivers fully populate |
9813 | | * m_oMapFieldDomains when opening a dataset. If this assumption is incorrect |
9814 | | * then a specialized implementation of GetFieldDomainNames() must be |
9815 | | * implemented. |
9816 | | * |
9817 | | * @param papszOptions Driver specific options determining how attributes |
9818 | | * should be retrieved. Pass nullptr for default behavior. |
9819 | | * |
9820 | | * @return list of field domain names |
9821 | | * @since GDAL 3.5 |
9822 | | */ |
9823 | | std::vector<std::string> |
9824 | | GDALDataset::GetFieldDomainNames(CPL_UNUSED CSLConstList papszOptions) const |
9825 | 0 | { |
9826 | |
|
9827 | 0 | std::vector<std::string> names; |
9828 | 0 | names.reserve(m_oMapFieldDomains.size()); |
9829 | 0 | for (const auto &it : m_oMapFieldDomains) |
9830 | 0 | { |
9831 | 0 | names.emplace_back(it.first); |
9832 | 0 | } |
9833 | 0 | return names; |
9834 | 0 | } |
9835 | | |
9836 | | /************************************************************************/ |
9837 | | /* GDALDatasetGetFieldDomainNames() */ |
9838 | | /************************************************************************/ |
9839 | | |
9840 | | /** Returns a list of the names of all field domains stored in the dataset. |
9841 | | * |
9842 | | * This is the same as the C++ method GDALDataset::GetFieldDomainNames(). |
9843 | | * |
9844 | | * @param hDS Dataset handle. |
9845 | | * @param papszOptions Driver specific options determining how attributes |
9846 | | * should be retrieved. Pass nullptr for default behavior. |
9847 | | * |
9848 | | * @return list of field domain names, to be freed with CSLDestroy() |
9849 | | * @since GDAL 3.5 |
9850 | | */ |
9851 | | char **GDALDatasetGetFieldDomainNames(GDALDatasetH hDS, |
9852 | | CSLConstList papszOptions) |
9853 | 0 | { |
9854 | 0 | VALIDATE_POINTER1(hDS, __func__, nullptr); |
9855 | 0 | auto names = |
9856 | 0 | GDALDataset::FromHandle(hDS)->GetFieldDomainNames(papszOptions); |
9857 | 0 | CPLStringList res; |
9858 | 0 | for (const auto &name : names) |
9859 | 0 | { |
9860 | 0 | res.AddString(name.c_str()); |
9861 | 0 | } |
9862 | 0 | return res.StealList(); |
9863 | 0 | } |
9864 | | |
9865 | | /************************************************************************/ |
9866 | | /* GetFieldDomain() */ |
9867 | | /************************************************************************/ |
9868 | | |
9869 | | /** Get a field domain from its name. |
9870 | | * |
9871 | | * @return the field domain, or nullptr if not found. |
9872 | | * @since GDAL 3.3 |
9873 | | */ |
9874 | | const OGRFieldDomain *GDALDataset::GetFieldDomain(const std::string &name) const |
9875 | 0 | { |
9876 | 0 | const auto iter = m_oMapFieldDomains.find(name); |
9877 | 0 | if (iter == m_oMapFieldDomains.end()) |
9878 | 0 | return nullptr; |
9879 | 0 | return iter->second.get(); |
9880 | 0 | } |
9881 | | |
9882 | | /************************************************************************/ |
9883 | | /* GDALDatasetGetFieldDomain() */ |
9884 | | /************************************************************************/ |
9885 | | |
9886 | | /** Get a field domain from its name. |
9887 | | * |
9888 | | * This is the same as the C++ method GDALDataset::GetFieldDomain(). |
9889 | | * |
9890 | | * @param hDS Dataset handle. |
9891 | | * @param pszName Name of field domain. |
9892 | | * @return the field domain (ownership remains to the dataset), or nullptr if |
9893 | | * not found. |
9894 | | * @since GDAL 3.3 |
9895 | | */ |
9896 | | OGRFieldDomainH GDALDatasetGetFieldDomain(GDALDatasetH hDS, const char *pszName) |
9897 | 0 | { |
9898 | 0 | VALIDATE_POINTER1(hDS, __func__, nullptr); |
9899 | 0 | VALIDATE_POINTER1(pszName, __func__, nullptr); |
9900 | 0 | return OGRFieldDomain::ToHandle(const_cast<OGRFieldDomain *>( |
9901 | 0 | GDALDataset::FromHandle(hDS)->GetFieldDomain(pszName))); |
9902 | 0 | } |
9903 | | |
9904 | | /************************************************************************/ |
9905 | | /* AddFieldDomain() */ |
9906 | | /************************************************************************/ |
9907 | | |
9908 | | /** Add a field domain to the dataset. |
9909 | | * |
9910 | | * Only a few drivers will support this operation, and some of them might only |
9911 | | * support it only for some types of field domains. |
9912 | | * At the time of writing (GDAL 3.3), only the Memory and GeoPackage drivers |
9913 | | * support this operation. A dataset having at least some support for this |
9914 | | * operation should report the ODsCAddFieldDomain dataset capability. |
9915 | | * |
9916 | | * Anticipated failures will not be emitted through the CPLError() |
9917 | | * infrastructure, but will be reported in the failureReason output parameter. |
9918 | | * |
9919 | | * @note Drivers should make sure to update m_oMapFieldDomains in order for the |
9920 | | * default implementation of GetFieldDomainNames() to work correctly, or |
9921 | | * alternatively a specialized implementation of GetFieldDomainNames() should be |
9922 | | * implemented. |
9923 | | * |
9924 | | * @param domain The domain definition. |
9925 | | * @param failureReason Output parameter. Will contain an error message if |
9926 | | * an error occurs. |
9927 | | * @return true in case of success. |
9928 | | * @since GDAL 3.3 |
9929 | | */ |
9930 | | bool GDALDataset::AddFieldDomain( |
9931 | | CPL_UNUSED std::unique_ptr<OGRFieldDomain> &&domain, |
9932 | | std::string &failureReason) |
9933 | 0 | { |
9934 | 0 | failureReason = "AddFieldDomain not supported by this driver"; |
9935 | 0 | return false; |
9936 | 0 | } |
9937 | | |
9938 | | /************************************************************************/ |
9939 | | /* GDALDatasetAddFieldDomain() */ |
9940 | | /************************************************************************/ |
9941 | | |
9942 | | /** Add a field domain to the dataset. |
9943 | | * |
9944 | | * Only a few drivers will support this operation, and some of them might only |
9945 | | * support it only for some types of field domains. |
9946 | | * At the time of writing (GDAL 3.3), only the Memory and GeoPackage drivers |
9947 | | * support this operation. A dataset having at least some support for this |
9948 | | * operation should report the ODsCAddFieldDomain dataset capability. |
9949 | | * |
9950 | | * Anticipated failures will not be emitted through the CPLError() |
9951 | | * infrastructure, but will be reported in the ppszFailureReason output |
9952 | | * parameter. |
9953 | | * |
9954 | | * @param hDS Dataset handle. |
9955 | | * @param hFieldDomain The domain definition. Contrary to the C++ version, |
9956 | | * the passed object is copied. |
9957 | | * @param ppszFailureReason Output parameter. Will contain an error message if |
9958 | | * an error occurs (*ppszFailureReason to be freed |
9959 | | * with CPLFree). May be NULL. |
9960 | | * @return true in case of success. |
9961 | | * @since GDAL 3.3 |
9962 | | */ |
9963 | | bool GDALDatasetAddFieldDomain(GDALDatasetH hDS, OGRFieldDomainH hFieldDomain, |
9964 | | char **ppszFailureReason) |
9965 | 0 | { |
9966 | 0 | VALIDATE_POINTER1(hDS, __func__, false); |
9967 | 0 | VALIDATE_POINTER1(hFieldDomain, __func__, false); |
9968 | 0 | auto poDomain = std::unique_ptr<OGRFieldDomain>( |
9969 | 0 | OGRFieldDomain::FromHandle(hFieldDomain)->Clone()); |
9970 | 0 | if (poDomain == nullptr) |
9971 | 0 | return false; |
9972 | 0 | std::string failureReason; |
9973 | 0 | const bool bRet = GDALDataset::FromHandle(hDS)->AddFieldDomain( |
9974 | 0 | std::move(poDomain), failureReason); |
9975 | 0 | if (ppszFailureReason) |
9976 | 0 | { |
9977 | 0 | *ppszFailureReason = |
9978 | 0 | failureReason.empty() ? nullptr : CPLStrdup(failureReason.c_str()); |
9979 | 0 | } |
9980 | 0 | return bRet; |
9981 | 0 | } |
9982 | | |
9983 | | /************************************************************************/ |
9984 | | /* DeleteFieldDomain() */ |
9985 | | /************************************************************************/ |
9986 | | |
9987 | | /** Removes a field domain from the dataset. |
9988 | | * |
9989 | | * Only a few drivers will support this operation. |
9990 | | * |
9991 | | * At the time of writing (GDAL 3.5), only the Memory and GeoPackage drivers |
9992 | | * support this operation. A dataset having at least some support for this |
9993 | | * operation should report the ODsCDeleteFieldDomain dataset capability. |
9994 | | * |
9995 | | * Anticipated failures will not be emitted through the CPLError() |
9996 | | * infrastructure, but will be reported in the failureReason output parameter. |
9997 | | * |
9998 | | * @note Drivers should make sure to update m_oMapFieldDomains in order for the |
9999 | | * default implementation of GetFieldDomainNames() to work correctly, or |
10000 | | * alternatively a specialized implementation of GetFieldDomainNames() should be |
10001 | | * implemented. |
10002 | | * |
10003 | | * @param name The domain name. |
10004 | | * @param failureReason Output parameter. Will contain an error message if |
10005 | | * an error occurs. |
10006 | | * @return true in case of success. |
10007 | | * @since GDAL 3.5 |
10008 | | */ |
10009 | | bool GDALDataset::DeleteFieldDomain(CPL_UNUSED const std::string &name, |
10010 | | std::string &failureReason) |
10011 | 0 | { |
10012 | 0 | failureReason = "DeleteFieldDomain not supported by this driver"; |
10013 | 0 | return false; |
10014 | 0 | } |
10015 | | |
10016 | | /************************************************************************/ |
10017 | | /* GDALDatasetDeleteFieldDomain() */ |
10018 | | /************************************************************************/ |
10019 | | |
10020 | | /** Removes a field domain from the dataset. |
10021 | | * |
10022 | | * Only a few drivers will support this operation. |
10023 | | * |
10024 | | * At the time of writing (GDAL 3.5), only the Memory and GeoPackage drivers |
10025 | | * support this operation. A dataset having at least some support for this |
10026 | | * operation should report the ODsCDeleteFieldDomain dataset capability. |
10027 | | * |
10028 | | * Anticipated failures will not be emitted through the CPLError() |
10029 | | * infrastructure, but will be reported in the ppszFailureReason output |
10030 | | * parameter. |
10031 | | * |
10032 | | * @param hDS Dataset handle. |
10033 | | * @param pszName The domain name. |
10034 | | * @param ppszFailureReason Output parameter. Will contain an error message if |
10035 | | * an error occurs (*ppszFailureReason to be freed |
10036 | | * with CPLFree). May be NULL. |
10037 | | * @return true in case of success. |
10038 | | * @since GDAL 3.3 |
10039 | | */ |
10040 | | bool GDALDatasetDeleteFieldDomain(GDALDatasetH hDS, const char *pszName, |
10041 | | char **ppszFailureReason) |
10042 | 0 | { |
10043 | 0 | VALIDATE_POINTER1(hDS, __func__, false); |
10044 | 0 | VALIDATE_POINTER1(pszName, __func__, false); |
10045 | 0 | std::string failureReason; |
10046 | 0 | const bool bRet = |
10047 | 0 | GDALDataset::FromHandle(hDS)->DeleteFieldDomain(pszName, failureReason); |
10048 | 0 | if (ppszFailureReason) |
10049 | 0 | { |
10050 | 0 | *ppszFailureReason = |
10051 | 0 | failureReason.empty() ? nullptr : CPLStrdup(failureReason.c_str()); |
10052 | 0 | } |
10053 | 0 | return bRet; |
10054 | 0 | } |
10055 | | |
10056 | | /************************************************************************/ |
10057 | | /* UpdateFieldDomain() */ |
10058 | | /************************************************************************/ |
10059 | | |
10060 | | /** Updates an existing field domain by replacing its definition. |
10061 | | * |
10062 | | * The existing field domain with matching name will be replaced. |
10063 | | * |
10064 | | * Only a few drivers will support this operation, and some of them might only |
10065 | | * support it only for some types of field domains. |
10066 | | * At the time of writing (GDAL 3.5), only the Memory driver |
10067 | | * supports this operation. A dataset having at least some support for this |
10068 | | * operation should report the ODsCUpdateFieldDomain dataset capability. |
10069 | | * |
10070 | | * Anticipated failures will not be emitted through the CPLError() |
10071 | | * infrastructure, but will be reported in the failureReason output parameter. |
10072 | | * |
10073 | | * @param domain The domain definition. |
10074 | | * @param failureReason Output parameter. Will contain an error message if |
10075 | | * an error occurs. |
10076 | | * @return true in case of success. |
10077 | | * @since GDAL 3.5 |
10078 | | */ |
10079 | | bool GDALDataset::UpdateFieldDomain( |
10080 | | CPL_UNUSED std::unique_ptr<OGRFieldDomain> &&domain, |
10081 | | std::string &failureReason) |
10082 | 0 | { |
10083 | 0 | failureReason = "UpdateFieldDomain not supported by this driver"; |
10084 | 0 | return false; |
10085 | 0 | } |
10086 | | |
10087 | | /************************************************************************/ |
10088 | | /* GDALDatasetUpdateFieldDomain() */ |
10089 | | /************************************************************************/ |
10090 | | |
10091 | | /** Updates an existing field domain by replacing its definition. |
10092 | | * |
10093 | | * The existing field domain with matching name will be replaced. |
10094 | | * |
10095 | | * Only a few drivers will support this operation, and some of them might only |
10096 | | * support it only for some types of field domains. |
10097 | | * At the time of writing (GDAL 3.5), only the Memory driver |
10098 | | * supports this operation. A dataset having at least some support for this |
10099 | | * operation should report the ODsCUpdateFieldDomain dataset capability. |
10100 | | * |
10101 | | * Anticipated failures will not be emitted through the CPLError() |
10102 | | * infrastructure, but will be reported in the failureReason output parameter. |
10103 | | * |
10104 | | * @param hDS Dataset handle. |
10105 | | * @param hFieldDomain The domain definition. Contrary to the C++ version, |
10106 | | * the passed object is copied. |
10107 | | * @param ppszFailureReason Output parameter. Will contain an error message if |
10108 | | * an error occurs (*ppszFailureReason to be freed |
10109 | | * with CPLFree). May be NULL. |
10110 | | * @return true in case of success. |
10111 | | * @since GDAL 3.5 |
10112 | | */ |
10113 | | bool GDALDatasetUpdateFieldDomain(GDALDatasetH hDS, |
10114 | | OGRFieldDomainH hFieldDomain, |
10115 | | char **ppszFailureReason) |
10116 | 0 | { |
10117 | 0 | VALIDATE_POINTER1(hDS, __func__, false); |
10118 | 0 | VALIDATE_POINTER1(hFieldDomain, __func__, false); |
10119 | 0 | auto poDomain = std::unique_ptr<OGRFieldDomain>( |
10120 | 0 | OGRFieldDomain::FromHandle(hFieldDomain)->Clone()); |
10121 | 0 | if (poDomain == nullptr) |
10122 | 0 | return false; |
10123 | 0 | std::string failureReason; |
10124 | 0 | const bool bRet = GDALDataset::FromHandle(hDS)->UpdateFieldDomain( |
10125 | 0 | std::move(poDomain), failureReason); |
10126 | 0 | if (ppszFailureReason) |
10127 | 0 | { |
10128 | 0 | *ppszFailureReason = |
10129 | 0 | failureReason.empty() ? nullptr : CPLStrdup(failureReason.c_str()); |
10130 | 0 | } |
10131 | 0 | return bRet; |
10132 | 0 | } |
10133 | | |
10134 | | /************************************************************************/ |
10135 | | /* GetRelationshipNames() */ |
10136 | | /************************************************************************/ |
10137 | | |
10138 | | /** Returns a list of the names of all relationships stored in the dataset. |
10139 | | * |
10140 | | * @param papszOptions Driver specific options determining how relationships |
10141 | | * should be retrieved. Pass nullptr for default behavior. |
10142 | | * |
10143 | | * @return list of relationship names |
10144 | | * @since GDAL 3.6 |
10145 | | */ |
10146 | | std::vector<std::string> |
10147 | | GDALDataset::GetRelationshipNames(CPL_UNUSED CSLConstList papszOptions) const |
10148 | 0 | { |
10149 | 0 | return {}; |
10150 | 0 | } |
10151 | | |
10152 | | /************************************************************************/ |
10153 | | /* GDALDatasetGetRelationshipNames() */ |
10154 | | /************************************************************************/ |
10155 | | |
10156 | | /** Returns a list of the names of all relationships stored in the dataset. |
10157 | | * |
10158 | | * This is the same as the C++ method GDALDataset::GetRelationshipNames(). |
10159 | | * |
10160 | | * @param hDS Dataset handle. |
10161 | | * @param papszOptions Driver specific options determining how relationships |
10162 | | * should be retrieved. Pass nullptr for default behavior. |
10163 | | * |
10164 | | * @return list of relationship names, to be freed with CSLDestroy() |
10165 | | * @since GDAL 3.6 |
10166 | | */ |
10167 | | char **GDALDatasetGetRelationshipNames(GDALDatasetH hDS, |
10168 | | CSLConstList papszOptions) |
10169 | 0 | { |
10170 | 0 | VALIDATE_POINTER1(hDS, __func__, nullptr); |
10171 | 0 | auto names = |
10172 | 0 | GDALDataset::FromHandle(hDS)->GetRelationshipNames(papszOptions); |
10173 | 0 | CPLStringList res; |
10174 | 0 | for (const auto &name : names) |
10175 | 0 | { |
10176 | 0 | res.AddString(name.c_str()); |
10177 | 0 | } |
10178 | 0 | return res.StealList(); |
10179 | 0 | } |
10180 | | |
10181 | | /************************************************************************/ |
10182 | | /* GetRelationship() */ |
10183 | | /************************************************************************/ |
10184 | | |
10185 | | /** Get a relationship from its name. |
10186 | | * |
10187 | | * @return the relationship, or nullptr if not found. |
10188 | | * @since GDAL 3.6 |
10189 | | */ |
10190 | | const GDALRelationship * |
10191 | | GDALDataset::GetRelationship(CPL_UNUSED const std::string &name) const |
10192 | 0 | { |
10193 | 0 | return nullptr; |
10194 | 0 | } |
10195 | | |
10196 | | /************************************************************************/ |
10197 | | /* GDALDatasetGetRelationship() */ |
10198 | | /************************************************************************/ |
10199 | | |
10200 | | /** Get a relationship from its name. |
10201 | | * |
10202 | | * This is the same as the C++ method GDALDataset::GetRelationship(). |
10203 | | * |
10204 | | * @param hDS Dataset handle. |
10205 | | * @param pszName Name of relationship. |
10206 | | * @return the relationship (ownership remains to the dataset), or nullptr if |
10207 | | * not found. |
10208 | | * @since GDAL 3.6 |
10209 | | */ |
10210 | | GDALRelationshipH GDALDatasetGetRelationship(GDALDatasetH hDS, |
10211 | | const char *pszName) |
10212 | 0 | { |
10213 | 0 | VALIDATE_POINTER1(hDS, __func__, nullptr); |
10214 | 0 | VALIDATE_POINTER1(pszName, __func__, nullptr); |
10215 | 0 | return GDALRelationship::ToHandle(const_cast<GDALRelationship *>( |
10216 | 0 | GDALDataset::FromHandle(hDS)->GetRelationship(pszName))); |
10217 | 0 | } |
10218 | | |
10219 | | /************************************************************************/ |
10220 | | /* AddRelationship() */ |
10221 | | /************************************************************************/ |
10222 | | |
10223 | | /** Add a relationship to the dataset. |
10224 | | * |
10225 | | * Only a few drivers will support this operation, and some of them might only |
10226 | | * support it only for some types of relationships. |
10227 | | * |
10228 | | * A dataset having at least some support for this |
10229 | | * operation should report the GDsCAddRelationship dataset capability. |
10230 | | * |
10231 | | * Anticipated failures will not be emitted through the CPLError() |
10232 | | * infrastructure, but will be reported in the failureReason output parameter. |
10233 | | * |
10234 | | * When adding a many-to-many relationship |
10235 | | * (GDALRelationshipCardinality::GRC_MANY_TO_MANY), it is possible to omit the |
10236 | | * mapping table name (see GDALRelationship::GetMappingTableName) to instruct |
10237 | | * the driver to create an appropriately named and structured mapping table. |
10238 | | * Some dataset formats require particular naming conventions and field |
10239 | | * structures for the mapping table, and delegating the construction of the |
10240 | | * mapping table to the driver will avoid these pitfalls. |
10241 | | * |
10242 | | * @param relationship The relationship definition. |
10243 | | * @param failureReason Output parameter. Will contain an error message if |
10244 | | * an error occurs. |
10245 | | * @return true in case of success. |
10246 | | * @since GDAL 3.6 |
10247 | | */ |
10248 | | bool GDALDataset::AddRelationship( |
10249 | | CPL_UNUSED std::unique_ptr<GDALRelationship> &&relationship, |
10250 | | std::string &failureReason) |
10251 | 0 | { |
10252 | 0 | failureReason = "AddRelationship not supported by this driver"; |
10253 | 0 | return false; |
10254 | 0 | } |
10255 | | |
10256 | | /************************************************************************/ |
10257 | | /* GDALDatasetAddRelationship() */ |
10258 | | /************************************************************************/ |
10259 | | |
10260 | | /** Add a relationship to the dataset. |
10261 | | * |
10262 | | * Only a few drivers will support this operation, and some of them might only |
10263 | | * support it only for some types of relationships. |
10264 | | * |
10265 | | * A dataset having at least some support for this |
10266 | | * operation should report the GDsCAddRelationship dataset capability. |
10267 | | * |
10268 | | * Anticipated failures will not be emitted through the CPLError() |
10269 | | * infrastructure, but will be reported in the failureReason output parameter. |
10270 | | * |
10271 | | * When adding a many-to-many relationship |
10272 | | * (GDALRelationshipCardinality::GRC_MANY_TO_MANY), it is possible to omit the |
10273 | | * mapping table name (see GDALRelationshipGetMappingTableName) to instruct the |
10274 | | * driver to create an appropriately named and structured mapping table. Some |
10275 | | * dataset formats require particular naming conventions and field structures |
10276 | | * for the mapping table, and delegating the construction of the mapping table |
10277 | | * to the driver will avoid these pitfalls. |
10278 | | * |
10279 | | * @param hDS Dataset handle. |
10280 | | * @param hRelationship The relationship definition. Contrary to the C++ |
10281 | | * version, the passed object is copied. |
10282 | | * @param ppszFailureReason Output parameter. Will contain an error message if |
10283 | | * an error occurs (*ppszFailureReason to be freed |
10284 | | * with CPLFree). May be NULL. |
10285 | | * @return true in case of success. |
10286 | | * @since GDAL 3.6 |
10287 | | */ |
10288 | | bool GDALDatasetAddRelationship(GDALDatasetH hDS, |
10289 | | GDALRelationshipH hRelationship, |
10290 | | char **ppszFailureReason) |
10291 | 0 | { |
10292 | 0 | VALIDATE_POINTER1(hDS, __func__, false); |
10293 | 0 | VALIDATE_POINTER1(hRelationship, __func__, false); |
10294 | 0 | std::unique_ptr<GDALRelationship> poRelationship( |
10295 | 0 | new GDALRelationship(*GDALRelationship::FromHandle(hRelationship))); |
10296 | 0 | std::string failureReason; |
10297 | 0 | const bool bRet = GDALDataset::FromHandle(hDS)->AddRelationship( |
10298 | 0 | std::move(poRelationship), failureReason); |
10299 | 0 | if (ppszFailureReason) |
10300 | 0 | { |
10301 | 0 | *ppszFailureReason = |
10302 | 0 | failureReason.empty() ? nullptr : CPLStrdup(failureReason.c_str()); |
10303 | 0 | } |
10304 | 0 | return bRet; |
10305 | 0 | } |
10306 | | |
10307 | | /************************************************************************/ |
10308 | | /* DeleteRelationship() */ |
10309 | | /************************************************************************/ |
10310 | | |
10311 | | /** Removes a relationship from the dataset. |
10312 | | * |
10313 | | * Only a few drivers will support this operation. |
10314 | | * |
10315 | | * A dataset having at least some support for this |
10316 | | * operation should report the GDsCDeleteRelationship dataset capability. |
10317 | | * |
10318 | | * Anticipated failures will not be emitted through the CPLError() |
10319 | | * infrastructure, but will be reported in the failureReason output parameter. |
10320 | | * |
10321 | | * @param name The relationship name. |
10322 | | * @param failureReason Output parameter. Will contain an error message if |
10323 | | * an error occurs. |
10324 | | * @return true in case of success. |
10325 | | * @since GDAL 3.6 |
10326 | | */ |
10327 | | bool GDALDataset::DeleteRelationship(CPL_UNUSED const std::string &name, |
10328 | | std::string &failureReason) |
10329 | 0 | { |
10330 | 0 | failureReason = "DeleteRelationship not supported by this driver"; |
10331 | 0 | return false; |
10332 | 0 | } |
10333 | | |
10334 | | /************************************************************************/ |
10335 | | /* GDALDatasetDeleteRelationship() */ |
10336 | | /************************************************************************/ |
10337 | | |
10338 | | /** Removes a relationship from the dataset. |
10339 | | * |
10340 | | * Only a few drivers will support this operation. |
10341 | | * |
10342 | | * A dataset having at least some support for this |
10343 | | * operation should report the GDsCDeleteRelationship dataset capability. |
10344 | | * |
10345 | | * Anticipated failures will not be emitted through the CPLError() |
10346 | | * infrastructure, but will be reported in the ppszFailureReason output |
10347 | | * parameter. |
10348 | | * |
10349 | | * @param hDS Dataset handle. |
10350 | | * @param pszName The relationship name. |
10351 | | * @param ppszFailureReason Output parameter. Will contain an error message if |
10352 | | * an error occurs (*ppszFailureReason to be freed |
10353 | | * with CPLFree). May be NULL. |
10354 | | * @return true in case of success. |
10355 | | * @since GDAL 3.6 |
10356 | | */ |
10357 | | bool GDALDatasetDeleteRelationship(GDALDatasetH hDS, const char *pszName, |
10358 | | char **ppszFailureReason) |
10359 | 0 | { |
10360 | 0 | VALIDATE_POINTER1(hDS, __func__, false); |
10361 | 0 | VALIDATE_POINTER1(pszName, __func__, false); |
10362 | 0 | std::string failureReason; |
10363 | 0 | const bool bRet = GDALDataset::FromHandle(hDS)->DeleteRelationship( |
10364 | 0 | pszName, failureReason); |
10365 | 0 | if (ppszFailureReason) |
10366 | 0 | { |
10367 | 0 | *ppszFailureReason = |
10368 | 0 | failureReason.empty() ? nullptr : CPLStrdup(failureReason.c_str()); |
10369 | 0 | } |
10370 | 0 | return bRet; |
10371 | 0 | } |
10372 | | |
10373 | | /************************************************************************/ |
10374 | | /* UpdateRelationship() */ |
10375 | | /************************************************************************/ |
10376 | | |
10377 | | /** Updates an existing relationship by replacing its definition. |
10378 | | * |
10379 | | * The existing relationship with matching name will be replaced. |
10380 | | * |
10381 | | * Only a few drivers will support this operation, and some of them might only |
10382 | | * support it only for some types of relationships. |
10383 | | * A dataset having at least some support for this |
10384 | | * operation should report the GDsCUpdateRelationship dataset capability. |
10385 | | * |
10386 | | * Anticipated failures will not be emitted through the CPLError() |
10387 | | * infrastructure, but will be reported in the failureReason output parameter. |
10388 | | * |
10389 | | * @param relationship The relationship definition. |
10390 | | * @param failureReason Output parameter. Will contain an error message if |
10391 | | * an error occurs. |
10392 | | * @return true in case of success. |
10393 | | * @since GDAL 3.6 |
10394 | | */ |
10395 | | bool GDALDataset::UpdateRelationship( |
10396 | | CPL_UNUSED std::unique_ptr<GDALRelationship> &&relationship, |
10397 | | std::string &failureReason) |
10398 | 0 | { |
10399 | 0 | failureReason = "UpdateRelationship not supported by this driver"; |
10400 | 0 | return false; |
10401 | 0 | } |
10402 | | |
10403 | | /************************************************************************/ |
10404 | | /* GDALDatasetUpdateRelationship() */ |
10405 | | /************************************************************************/ |
10406 | | |
10407 | | /** Updates an existing relationship by replacing its definition. |
10408 | | * |
10409 | | * The existing relationship with matching name will be replaced. |
10410 | | * |
10411 | | * Only a few drivers will support this operation, and some of them might only |
10412 | | * support it only for some types of relationships. |
10413 | | * A dataset having at least some support for this |
10414 | | * operation should report the GDsCUpdateRelationship dataset capability. |
10415 | | * |
10416 | | * Anticipated failures will not be emitted through the CPLError() |
10417 | | * infrastructure, but will be reported in the failureReason output parameter. |
10418 | | * |
10419 | | * @param hDS Dataset handle. |
10420 | | * @param hRelationship The relationship definition. Contrary to the C++ |
10421 | | * version, the passed object is copied. |
10422 | | * @param ppszFailureReason Output parameter. Will contain an error message if |
10423 | | * an error occurs (*ppszFailureReason to be freed |
10424 | | * with CPLFree). May be NULL. |
10425 | | * @return true in case of success. |
10426 | | * @since GDAL 3.5 |
10427 | | */ |
10428 | | bool GDALDatasetUpdateRelationship(GDALDatasetH hDS, |
10429 | | GDALRelationshipH hRelationship, |
10430 | | char **ppszFailureReason) |
10431 | 0 | { |
10432 | 0 | VALIDATE_POINTER1(hDS, __func__, false); |
10433 | 0 | VALIDATE_POINTER1(hRelationship, __func__, false); |
10434 | 0 | std::unique_ptr<GDALRelationship> poRelationship( |
10435 | 0 | new GDALRelationship(*GDALRelationship::FromHandle(hRelationship))); |
10436 | 0 | std::string failureReason; |
10437 | 0 | const bool bRet = GDALDataset::FromHandle(hDS)->UpdateRelationship( |
10438 | 0 | std::move(poRelationship), failureReason); |
10439 | 0 | if (ppszFailureReason) |
10440 | 0 | { |
10441 | 0 | *ppszFailureReason = |
10442 | 0 | failureReason.empty() ? nullptr : CPLStrdup(failureReason.c_str()); |
10443 | 0 | } |
10444 | 0 | return bRet; |
10445 | 0 | } |
10446 | | |
10447 | | /************************************************************************/ |
10448 | | /* GDALDatasetSetQueryLoggerFunc() */ |
10449 | | /************************************************************************/ |
10450 | | |
10451 | | /** |
10452 | | * Sets the SQL query logger callback. |
10453 | | * |
10454 | | * When supported by the driver, the callback will be called with |
10455 | | * the executed SQL text, the error message, the execution time in milliseconds, |
10456 | | * the number of records fetched/affected and the client status data. |
10457 | | * |
10458 | | * A value of -1 in the execution time or in the number of records indicates |
10459 | | * that the values are unknown. |
10460 | | * |
10461 | | * @param hDS Dataset handle. |
10462 | | * @param pfnQueryLoggerFunc Callback function |
10463 | | * @param poQueryLoggerArg Opaque client status data |
10464 | | * @return true in case of success. |
10465 | | * @since GDAL 3.7 |
10466 | | */ |
10467 | | bool GDALDatasetSetQueryLoggerFunc(GDALDatasetH hDS, |
10468 | | GDALQueryLoggerFunc pfnQueryLoggerFunc, |
10469 | | void *poQueryLoggerArg) |
10470 | 0 | { |
10471 | 0 | VALIDATE_POINTER1(hDS, __func__, false); |
10472 | 0 | return GDALDataset::FromHandle(hDS)->SetQueryLoggerFunc(pfnQueryLoggerFunc, |
10473 | 0 | poQueryLoggerArg); |
10474 | 0 | } |
10475 | | |
10476 | | //! @cond Doxygen_Suppress |
10477 | | |
10478 | | /************************************************************************/ |
10479 | | /* SetEnableOverviews() */ |
10480 | | /************************************************************************/ |
10481 | | |
10482 | | void GDALDataset::SetEnableOverviews(bool bEnable) |
10483 | 0 | { |
10484 | 0 | if (m_poPrivate) |
10485 | 0 | { |
10486 | 0 | m_poPrivate->m_bOverviewsEnabled = bEnable; |
10487 | 0 | } |
10488 | 0 | } |
10489 | | |
10490 | | /************************************************************************/ |
10491 | | /* AreOverviewsEnabled() */ |
10492 | | /************************************************************************/ |
10493 | | |
10494 | | bool GDALDataset::AreOverviewsEnabled() const |
10495 | 0 | { |
10496 | 0 | return m_poPrivate ? m_poPrivate->m_bOverviewsEnabled : true; |
10497 | 0 | } |
10498 | | |
10499 | | /************************************************************************/ |
10500 | | /* IsAllBands() */ |
10501 | | /************************************************************************/ |
10502 | | |
10503 | | bool GDALDataset::IsAllBands(int nBandCount, const int *panBandList) const |
10504 | 0 | { |
10505 | 0 | if (nBands != nBandCount) |
10506 | 0 | return false; |
10507 | 0 | if (panBandList) |
10508 | 0 | { |
10509 | 0 | for (int i = 0; i < nBandCount; ++i) |
10510 | 0 | { |
10511 | 0 | if (panBandList[i] != i + 1) |
10512 | 0 | return false; |
10513 | 0 | } |
10514 | 0 | } |
10515 | 0 | return true; |
10516 | 0 | } |
10517 | | |
10518 | | //! @endcond |
10519 | | |
10520 | | /************************************************************************/ |
10521 | | /* GetCompressionFormats() */ |
10522 | | /************************************************************************/ |
10523 | | |
10524 | | /** Return the compression formats that can be natively obtained for the |
10525 | | * window of interest and requested bands. |
10526 | | * |
10527 | | * For example, a tiled dataset may be able to return data in a compressed |
10528 | | * format if the window of interest matches exactly a tile. For some formats, |
10529 | | * drivers may also be able to merge several tiles together (not currently |
10530 | | * implemented though). |
10531 | | * |
10532 | | * Each format string is a pseudo MIME type, whose first part can be passed |
10533 | | * as the pszFormat argument of ReadCompressedData(), with additional |
10534 | | * parameters specified as key=value with a semi-colon separator. |
10535 | | * |
10536 | | * The amount and types of optional parameters passed after the MIME type is |
10537 | | * format dependent, and driver dependent (some drivers might not be able to |
10538 | | * return those extra information without doing a rather costly processing). |
10539 | | * |
10540 | | * For example, a driver might return "JPEG;frame_type=SOF0_baseline;" |
10541 | | * "bit_depth=8;num_components=3;subsampling=4:2:0;colorspace=YCbCr", and |
10542 | | * consequently "JPEG" can be passed as the pszFormat argument of |
10543 | | * ReadCompressedData(). For JPEG, implementations can use the |
10544 | | * GDALGetCompressionFormatForJPEG() helper method to generate a string like |
10545 | | * above from a JPEG codestream. |
10546 | | * |
10547 | | * Several values might be returned. For example, |
10548 | | * the JPEGXL driver will return "JXL", but also potentially "JPEG" |
10549 | | * if the JPEGXL codestream includes a JPEG reconstruction box. |
10550 | | * |
10551 | | * In the general case this method will return an empty list. |
10552 | | * |
10553 | | * This is the same as C function GDALDatasetGetCompressionFormats(). |
10554 | | * |
10555 | | * @param nXOff The pixel offset to the top left corner of the region |
10556 | | * of the band to be accessed. This would be zero to start from the left side. |
10557 | | * |
10558 | | * @param nYOff The line offset to the top left corner of the region |
10559 | | * of the band to be accessed. This would be zero to start from the top. |
10560 | | * |
10561 | | * @param nXSize The width of the region of the band to be accessed in pixels. |
10562 | | * |
10563 | | * @param nYSize The height of the region of the band to be accessed in lines. |
10564 | | * |
10565 | | * @param nBandCount the number of bands being requested. |
10566 | | * |
10567 | | * @param panBandList the list of nBandCount band numbers. |
10568 | | * Note band numbers are 1 based. This may be NULL to select the first |
10569 | | * nBandCount bands. |
10570 | | * |
10571 | | * @return a list of compatible formats (which may be empty) |
10572 | | * |
10573 | | * For example, to check if native compression format(s) are available on the |
10574 | | * whole image: |
10575 | | * \code{.cpp} |
10576 | | * const CPLStringList aosFormats = |
10577 | | * poDataset->GetCompressionFormats(0, 0, |
10578 | | * poDataset->GetRasterXSize(), |
10579 | | * poDataset->GetRasterYSize(), |
10580 | | * poDataset->GetRasterCount(), |
10581 | | * nullptr); |
10582 | | * for( const char* pszFormat: aosFormats ) |
10583 | | * { |
10584 | | * // Remove optional parameters and just print out the MIME type. |
10585 | | * const CPLStringList aosTokens(CSLTokenizeString2(pszFormat, ";", 0)); |
10586 | | * printf("Found format %s\n, aosTokens[0]); |
10587 | | * } |
10588 | | * \endcode |
10589 | | * |
10590 | | * @since GDAL 3.7 |
10591 | | */ |
10592 | | CPLStringList |
10593 | | GDALDataset::GetCompressionFormats(CPL_UNUSED int nXOff, CPL_UNUSED int nYOff, |
10594 | | CPL_UNUSED int nXSize, CPL_UNUSED int nYSize, |
10595 | | CPL_UNUSED int nBandCount, |
10596 | | CPL_UNUSED const int *panBandList) |
10597 | 0 | { |
10598 | 0 | return CPLStringList(); |
10599 | 0 | } |
10600 | | |
10601 | | /************************************************************************/ |
10602 | | /* GDALDatasetGetCompressionFormats() */ |
10603 | | /************************************************************************/ |
10604 | | |
10605 | | /** Return the compression formats that can be natively obtained for the |
10606 | | * window of interest and requested bands. |
10607 | | * |
10608 | | * For example, a tiled dataset may be able to return data in a compressed |
10609 | | * format if the window of interest matches exactly a tile. For some formats, |
10610 | | * drivers may also be able to merge several tiles together (not currently |
10611 | | * implemented though). |
10612 | | * |
10613 | | * Each format string is a pseudo MIME type, whose first part can be passed |
10614 | | * as the pszFormat argument of ReadCompressedData(), with additional |
10615 | | * parameters specified as key=value with a semi-colon separator. |
10616 | | * |
10617 | | * The amount and types of optional parameters passed after the MIME type is |
10618 | | * format dependent, and driver dependent (some drivers might not be able to |
10619 | | * return those extra information without doing a rather costly processing). |
10620 | | * |
10621 | | * For example, a driver might return "JPEG;frame_type=SOF0_baseline;" |
10622 | | * "bit_depth=8;num_components=3;subsampling=4:2:0;colorspace=YCbCr", and |
10623 | | * consequently "JPEG" can be passed as the pszFormat argument of |
10624 | | * ReadCompressedData(). For JPEG, implementations can use the |
10625 | | * GDALGetCompressionFormatForJPEG() helper method to generate a string like |
10626 | | * above from a JPEG codestream. |
10627 | | * |
10628 | | * Several values might be returned. For example, |
10629 | | * the JPEGXL driver will return "JXL", but also potentially "JPEG" |
10630 | | * if the JPEGXL codestream includes a JPEG reconstruction box. |
10631 | | * |
10632 | | * In the general case this method will return an empty list. |
10633 | | * |
10634 | | * This is the same as C++ method GDALDataset::GetCompressionFormats(). |
10635 | | * |
10636 | | * @param hDS Dataset handle. |
10637 | | * |
10638 | | * @param nXOff The pixel offset to the top left corner of the region |
10639 | | * of the band to be accessed. This would be zero to start from the left side. |
10640 | | * |
10641 | | * @param nYOff The line offset to the top left corner of the region |
10642 | | * of the band to be accessed. This would be zero to start from the top. |
10643 | | * |
10644 | | * @param nXSize The width of the region of the band to be accessed in pixels. |
10645 | | * |
10646 | | * @param nYSize The height of the region of the band to be accessed in lines. |
10647 | | * |
10648 | | * @param nBandCount the number of bands being requested. |
10649 | | * |
10650 | | * @param panBandList the list of nBandCount band numbers. |
10651 | | * Note band numbers are 1 based. This may be NULL to select the first |
10652 | | * nBandCount bands. |
10653 | | * |
10654 | | * @return a list of compatible formats (which may be empty) that should be |
10655 | | * freed with CSLDestroy(), or nullptr. |
10656 | | * |
10657 | | * @since GDAL 3.7 |
10658 | | */ |
10659 | | char **GDALDatasetGetCompressionFormats(GDALDatasetH hDS, int nXOff, int nYOff, |
10660 | | int nXSize, int nYSize, int nBandCount, |
10661 | | const int *panBandList) |
10662 | 0 | { |
10663 | 0 | VALIDATE_POINTER1(hDS, __func__, nullptr); |
10664 | 0 | return GDALDataset::FromHandle(hDS) |
10665 | 0 | ->GetCompressionFormats(nXOff, nYOff, nXSize, nYSize, nBandCount, |
10666 | 0 | panBandList) |
10667 | 0 | .StealList(); |
10668 | 0 | } |
10669 | | |
10670 | | /************************************************************************/ |
10671 | | /* ReadCompressedData() */ |
10672 | | /************************************************************************/ |
10673 | | |
10674 | | /** Return the compressed content that can be natively obtained for the |
10675 | | * window of interest and requested bands. |
10676 | | * |
10677 | | * For example, a tiled dataset may be able to return data in compressed format |
10678 | | * if the window of interest matches exactly a tile. For some formats, drivers |
10679 | | * may also be example to merge several tiles together (not currently |
10680 | | * implemented though). |
10681 | | * |
10682 | | * The implementation should make sure that the content returned forms a valid |
10683 | | * standalone file. For example, for the GeoTIFF implementation of this method, |
10684 | | * when extracting a JPEG tile, the method will automatically add the content |
10685 | | * of the JPEG Huffman and/or quantization tables that might be stored in the |
10686 | | * TIFF JpegTables tag, and not in tile data itself. |
10687 | | * |
10688 | | * In the general case this method will return CE_Failure. |
10689 | | * |
10690 | | * This is the same as C function GDALDatasetReadCompressedData(). |
10691 | | * |
10692 | | * @param pszFormat Requested compression format (e.g. "JPEG", |
10693 | | * "WEBP", "JXL"). This is the MIME type of one of the values |
10694 | | * returned by GetCompressionFormats(). The format string is designed to |
10695 | | * potentially include at a later point key=value optional parameters separated |
10696 | | * by a semi-colon character. At time of writing, none are implemented. |
10697 | | * ReadCompressedData() implementations should verify optional parameters and |
10698 | | * return CE_Failure if they cannot support one of them. |
10699 | | * |
10700 | | * @param nXOff The pixel offset to the top left corner of the region |
10701 | | * of the band to be accessed. This would be zero to start from the left side. |
10702 | | * |
10703 | | * @param nYOff The line offset to the top left corner of the region |
10704 | | * of the band to be accessed. This would be zero to start from the top. |
10705 | | * |
10706 | | * @param nXSize The width of the region of the band to be accessed in pixels. |
10707 | | * |
10708 | | * @param nYSize The height of the region of the band to be accessed in lines. |
10709 | | * |
10710 | | * @param nBandCount the number of bands being requested. |
10711 | | * |
10712 | | * @param panBandList the list of nBandCount band numbers. |
10713 | | * Note band numbers are 1 based. This may be NULL to select the first |
10714 | | * nBandCount bands. |
10715 | | * |
10716 | | * @param ppBuffer Pointer to a buffer to store the compressed data or nullptr. |
10717 | | * If ppBuffer is not nullptr, then pnBufferSize should also not be nullptr. |
10718 | | * If ppBuffer is not nullptr, and *ppBuffer is not nullptr, then the provided |
10719 | | * buffer will be filled with the compressed data, provided that pnBufferSize |
10720 | | * and *pnBufferSize are not nullptr, and *pnBufferSize, indicating the size |
10721 | | * of *ppBuffer, is sufficiently large to hold the data. |
10722 | | * If ppBuffer is not nullptr, but *ppBuffer is nullptr, then the method will |
10723 | | * allocate *ppBuffer using VSIMalloc(), and thus the caller is responsible to |
10724 | | * free it with VSIFree(). |
10725 | | * If ppBuffer is nullptr, then the compressed data itself will not be returned, |
10726 | | * but *pnBufferSize will be updated with an upper bound of the size that would |
10727 | | * be necessary to hold it (if pnBufferSize != nullptr). |
10728 | | * |
10729 | | * @param pnBufferSize Output buffer size, or nullptr. |
10730 | | * If ppBuffer != nullptr && *ppBuffer != nullptr, then pnBufferSize should |
10731 | | * be != nullptr and *pnBufferSize contain the size of *ppBuffer. If the |
10732 | | * method is successful, *pnBufferSize will be updated with the actual size |
10733 | | * used. |
10734 | | * |
10735 | | * @param ppszDetailedFormat Pointer to an output string, or nullptr. |
10736 | | * If ppszDetailedFormat is not nullptr, then, on success, the method will |
10737 | | * allocate a new string in *ppszDetailedFormat (to be freed with VSIFree()) |
10738 | | * *ppszDetailedFormat might contain strings like |
10739 | | * "JPEG;frame_type=SOF0_baseline;bit_depth=8;num_components=3;" |
10740 | | * "subsampling=4:2:0;colorspace=YCbCr" or simply the MIME type. |
10741 | | * The string will contain at least as much information as what |
10742 | | * GetCompressionFormats() returns, and potentially more when |
10743 | | * ppBuffer != nullptr. |
10744 | | * |
10745 | | * @return CE_None in case of success, CE_Failure otherwise. |
10746 | | * |
10747 | | * For example, to request JPEG content on the whole image and let GDAL deal |
10748 | | * with the buffer allocation. |
10749 | | * \code{.cpp} |
10750 | | * void* pBuffer = nullptr; |
10751 | | * size_t nBufferSize = 0; |
10752 | | * CPLErr eErr = |
10753 | | * poDataset->ReadCompressedData("JPEG", |
10754 | | * 0, 0, |
10755 | | * poDataset->GetRasterXSize(), |
10756 | | * poDataset->GetRasterYSize(), |
10757 | | * poDataset->GetRasterCount(), |
10758 | | * nullptr, // panBandList |
10759 | | * &pBuffer, |
10760 | | * &nBufferSize, |
10761 | | * nullptr // ppszDetailedFormat |
10762 | | * ); |
10763 | | * if (eErr == CE_None) |
10764 | | * { |
10765 | | * CPLAssert(pBuffer != nullptr); |
10766 | | * CPLAssert(nBufferSize > 0); |
10767 | | * VSILFILE* fp = VSIFOpenL("my.jpeg", "wb"); |
10768 | | * if (fp) |
10769 | | * { |
10770 | | * VSIFWriteL(pBuffer, nBufferSize, 1, fp); |
10771 | | * VSIFCloseL(fp); |
10772 | | * } |
10773 | | * VSIFree(pBuffer); |
10774 | | * } |
10775 | | * \endcode |
10776 | | * |
10777 | | * Or to manage the buffer allocation on your side: |
10778 | | * \code{.cpp} |
10779 | | * size_t nUpperBoundBufferSize = 0; |
10780 | | * CPLErr eErr = |
10781 | | * poDataset->ReadCompressedData("JPEG", |
10782 | | * 0, 0, |
10783 | | * poDataset->GetRasterXSize(), |
10784 | | * poDataset->GetRasterYSize(), |
10785 | | * poDataset->GetRasterCount(), |
10786 | | * nullptr, // panBandList |
10787 | | * nullptr, // ppBuffer, |
10788 | | * &nUpperBoundBufferSize, |
10789 | | * nullptr // ppszDetailedFormat |
10790 | | * ); |
10791 | | * if (eErr == CE_None) |
10792 | | * { |
10793 | | * std::vector<uint8_t> myBuffer; |
10794 | | * myBuffer.resize(nUpperBoundBufferSize); |
10795 | | * void* pBuffer = myBuffer.data(); |
10796 | | * size_t nActualSize = nUpperBoundBufferSize; |
10797 | | * char* pszDetailedFormat = nullptr; |
10798 | | * // We also request detailed format, but we could have passed it to |
10799 | | * // nullptr as well. |
10800 | | * eErr = |
10801 | | * poDataset->ReadCompressedData("JPEG", |
10802 | | * 0, 0, |
10803 | | * poDataset->GetRasterXSize(), |
10804 | | * poDataset->GetRasterYSize(), |
10805 | | * poDataset->GetRasterCount(), |
10806 | | * nullptr, // panBandList |
10807 | | * &pBuffer, |
10808 | | * &nActualSize, |
10809 | | * &pszDetailedFormat); |
10810 | | * if (eErr == CE_None) |
10811 | | * { |
10812 | | * CPLAssert(pBuffer == myBuffer.data()); // pointed value not modified |
10813 | | * CPLAssert(nActualSize <= nUpperBoundBufferSize); |
10814 | | * myBuffer.resize(nActualSize); |
10815 | | * // do something useful |
10816 | | * VSIFree(pszDetailedFormat); |
10817 | | * } |
10818 | | * } |
10819 | | * \endcode |
10820 | | * |
10821 | | * @since GDAL 3.7 |
10822 | | */ |
10823 | | CPLErr GDALDataset::ReadCompressedData( |
10824 | | CPL_UNUSED const char *pszFormat, CPL_UNUSED int nXOff, |
10825 | | CPL_UNUSED int nYOff, CPL_UNUSED int nXSize, CPL_UNUSED int nYSize, |
10826 | | CPL_UNUSED int nBandCount, CPL_UNUSED const int *panBandList, |
10827 | | CPL_UNUSED void **ppBuffer, CPL_UNUSED size_t *pnBufferSize, |
10828 | | CPL_UNUSED char **ppszDetailedFormat) |
10829 | 0 | { |
10830 | 0 | return CE_Failure; |
10831 | 0 | } |
10832 | | |
10833 | | /************************************************************************/ |
10834 | | /* GDALDatasetReadCompressedData() */ |
10835 | | /************************************************************************/ |
10836 | | |
10837 | | /** Return the compressed content that can be natively obtained for the |
10838 | | * window of interest and requested bands. |
10839 | | * |
10840 | | * For example, a tiled dataset may be able to return data in compressed format |
10841 | | * if the window of interest matches exactly a tile. For some formats, drivers |
10842 | | * may also be example to merge several tiles together (not currently |
10843 | | * implemented though). |
10844 | | * |
10845 | | * The implementation should make sure that the content returned forms a valid |
10846 | | * standalone file. For example, for the GeoTIFF implementation of this method, |
10847 | | * when extracting a JPEG tile, the method will automatically adds the content |
10848 | | * of the JPEG Huffman and/or quantization tables that might be stored in the |
10849 | | * TIFF JpegTables tag, and not in tile data itself. |
10850 | | * |
10851 | | * In the general case this method will return CE_Failure. |
10852 | | * |
10853 | | * This is the same as C++ method GDALDataset:ReadCompressedData(). |
10854 | | * |
10855 | | * @param hDS Dataset handle. |
10856 | | * |
10857 | | * @param pszFormat Requested compression format (e.g. "JPEG", |
10858 | | * "WEBP", "JXL"). This is the MIME type of one of the values |
10859 | | * returned by GetCompressionFormats(). The format string is designed to |
10860 | | * potentially include at a later point key=value optional parameters separated |
10861 | | * by a semi-colon character. At time of writing, none are implemented. |
10862 | | * ReadCompressedData() implementations should verify optional parameters and |
10863 | | * return CE_Failure if they cannot support one of them. |
10864 | | * |
10865 | | * @param nXOff The pixel offset to the top left corner of the region |
10866 | | * of the band to be accessed. This would be zero to start from the left side. |
10867 | | * |
10868 | | * @param nYOff The line offset to the top left corner of the region |
10869 | | * of the band to be accessed. This would be zero to start from the top. |
10870 | | * |
10871 | | * @param nXSize The width of the region of the band to be accessed in pixels. |
10872 | | * |
10873 | | * @param nYSize The height of the region of the band to be accessed in lines. |
10874 | | * |
10875 | | * @param nBandCount the number of bands being requested. |
10876 | | * |
10877 | | * @param panBandList the list of nBandCount band numbers. |
10878 | | * Note band numbers are 1 based. This may be NULL to select the first |
10879 | | * nBandCount bands. |
10880 | | * |
10881 | | * @param ppBuffer Pointer to a buffer to store the compressed data or nullptr. |
10882 | | * If ppBuffer is not nullptr, then pnBufferSize should also not be nullptr. |
10883 | | * If ppBuffer is not nullptr, and *ppBuffer is not nullptr, then the provided |
10884 | | * buffer will be filled with the compressed data, provided that pnBufferSize |
10885 | | * and *pnBufferSize are not nullptr, and *pnBufferSize, indicating the size |
10886 | | * of *ppBuffer, is sufficiently large to hold the data. |
10887 | | * If ppBuffer is not nullptr, but *ppBuffer is nullptr, then the method will |
10888 | | * allocate *ppBuffer using VSIMalloc(), and thus the caller is responsible to |
10889 | | * free it with VSIFree(). |
10890 | | * If ppBuffer is nullptr, then the compressed data itself will not be returned, |
10891 | | * but *pnBufferSize will be updated with an upper bound of the size that would |
10892 | | * be necessary to hold it (if pnBufferSize != nullptr). |
10893 | | * |
10894 | | * @param pnBufferSize Output buffer size, or nullptr. |
10895 | | * If ppBuffer != nullptr && *ppBuffer != nullptr, then pnBufferSize should |
10896 | | * be != nullptr and *pnBufferSize contain the size of *ppBuffer. If the |
10897 | | * method is successful, *pnBufferSize will be updated with the actual size |
10898 | | * used. |
10899 | | * |
10900 | | * @param ppszDetailedFormat Pointer to an output string, or nullptr. |
10901 | | * If ppszDetailedFormat is not nullptr, then, on success, the method will |
10902 | | * allocate a new string in *ppszDetailedFormat (to be freed with VSIFree()) |
10903 | | * *ppszDetailedFormat might contain strings like |
10904 | | * "JPEG;frame_type=SOF0_baseline;bit_depth=8;num_components=3;" |
10905 | | * "subsampling=4:2:0;colorspace=YCbCr" or simply the MIME type. |
10906 | | * The string will contain at least as much information as what |
10907 | | * GetCompressionFormats() returns, and potentially more when |
10908 | | * ppBuffer != nullptr. |
10909 | | * |
10910 | | * @return CE_None in case of success, CE_Failure otherwise. |
10911 | | * |
10912 | | * @since GDAL 3.7 |
10913 | | */ |
10914 | | CPLErr GDALDatasetReadCompressedData(GDALDatasetH hDS, const char *pszFormat, |
10915 | | int nXOff, int nYOff, int nXSize, |
10916 | | int nYSize, int nBandCount, |
10917 | | const int *panBandList, void **ppBuffer, |
10918 | | size_t *pnBufferSize, |
10919 | | char **ppszDetailedFormat) |
10920 | 0 | { |
10921 | 0 | VALIDATE_POINTER1(hDS, __func__, CE_Failure); |
10922 | 0 | return GDALDataset::FromHandle(hDS)->ReadCompressedData( |
10923 | 0 | pszFormat, nXOff, nYOff, nXSize, nYSize, nBandCount, panBandList, |
10924 | 0 | ppBuffer, pnBufferSize, ppszDetailedFormat); |
10925 | 0 | } |
10926 | | |
10927 | | /************************************************************************/ |
10928 | | /* CanBeCloned() */ |
10929 | | /************************************************************************/ |
10930 | | |
10931 | | //! @cond Doxygen_Suppress |
10932 | | |
10933 | | /** This method is called by GDALThreadSafeDataset::Create() to determine if |
10934 | | * it is possible to create a thread-safe wrapper for a dataset, which involves |
10935 | | * the ability to Clone() it. |
10936 | | * |
10937 | | * Implementations of this method must be thread-safe. |
10938 | | * |
10939 | | * @param nScopeFlags Combination of GDAL_OF_RASTER, GDAL_OF_VECTOR, etc. flags, |
10940 | | * expressing the intended use for thread-safety. |
10941 | | * Currently, the only valid scope is in the base |
10942 | | * implementation is GDAL_OF_RASTER. |
10943 | | * @param bCanShareState Determines if cloned datasets are allowed to share |
10944 | | * state with the dataset they have been cloned from. |
10945 | | * If set to true, the dataset from which they have been |
10946 | | * cloned from must remain opened during the lifetime of |
10947 | | * its clones. |
10948 | | * @return true if the Clone() method is expected to succeed with the same values |
10949 | | * of nScopeFlags and bCanShareState. |
10950 | | */ |
10951 | | bool GDALDataset::CanBeCloned(int nScopeFlags, |
10952 | | [[maybe_unused]] bool bCanShareState) const |
10953 | 0 | { |
10954 | 0 | return m_bCanBeReopened && nScopeFlags == GDAL_OF_RASTER; |
10955 | 0 | } |
10956 | | |
10957 | | //! @endcond |
10958 | | |
10959 | | /************************************************************************/ |
10960 | | /* Clone() */ |
10961 | | /************************************************************************/ |
10962 | | |
10963 | | //! @cond Doxygen_Suppress |
10964 | | |
10965 | | /** This method "clones" the current dataset, that is it returns a new instance |
10966 | | * that is opened on the same underlying "file". |
10967 | | * |
10968 | | * The base implementation uses GDALDataset::Open() to re-open the dataset. |
10969 | | * The MEM driver has a specialized implementation that returns a new instance, |
10970 | | * but which shares the same memory buffer as this. |
10971 | | * |
10972 | | * Implementations of this method must be thread-safe. |
10973 | | * |
10974 | | * @param nScopeFlags Combination of GDAL_OF_RASTER, GDAL_OF_VECTOR, etc. flags, |
10975 | | * expressing the intended use for thread-safety. |
10976 | | * Currently, the only valid scope is in the base |
10977 | | * implementation is GDAL_OF_RASTER. |
10978 | | * @param bCanShareState Determines if cloned datasets are allowed to share |
10979 | | * state with the dataset they have been cloned from. |
10980 | | * If set to true, the dataset from which they have been |
10981 | | * cloned from must remain opened during the lifetime of |
10982 | | * its clones. |
10983 | | * @return a new instance, or nullptr in case of error. |
10984 | | */ |
10985 | | std::unique_ptr<GDALDataset> |
10986 | | GDALDataset::Clone(int nScopeFlags, [[maybe_unused]] bool bCanShareState) const |
10987 | 0 | { |
10988 | 0 | CPLStringList aosAllowedDrivers; |
10989 | 0 | if (poDriver) |
10990 | 0 | aosAllowedDrivers.AddString(poDriver->GetDescription()); |
10991 | 0 | return std::unique_ptr<GDALDataset>(GDALDataset::Open( |
10992 | 0 | GetDescription(), |
10993 | 0 | nScopeFlags | GDAL_OF_INTERNAL | GDAL_OF_VERBOSE_ERROR, |
10994 | 0 | aosAllowedDrivers.List(), papszOpenOptions)); |
10995 | 0 | } |
10996 | | |
10997 | | //! @endcond |
10998 | | |
10999 | | /************************************************************************/ |
11000 | | /* GeolocationToPixelLine() */ |
11001 | | /************************************************************************/ |
11002 | | |
11003 | | /** Transform georeferenced coordinates to pixel/line coordinates. |
11004 | | * |
11005 | | * When poSRS is null, those georeferenced coordinates (dfGeolocX, dfGeolocY) |
11006 | | * must be in the "natural" SRS of the dataset, that is the one returned by |
11007 | | * GetSpatialRef() if there is a geotransform, GetGCPSpatialRef() if there are |
11008 | | * GCPs, WGS 84 if there are RPC coefficients, or the SRS of the geolocation |
11009 | | * array (generally WGS 84) if there is a geolocation array. |
11010 | | * If that natural SRS is a geographic one, dfGeolocX must be a longitude, and |
11011 | | * dfGeolocY a latitude. If that natural SRS is a projected one, dfGeolocX must |
11012 | | * be a easting, and dfGeolocY a northing. |
11013 | | * |
11014 | | * When poSRS is set to a non-null value, (dfGeolocX, dfGeolocY) must be |
11015 | | * expressed in that CRS, and that tuple must be conformant with the |
11016 | | * data-axis-to-crs-axis setting of poSRS, that is the one returned by |
11017 | | * the OGRSpatialReference::GetDataAxisToSRSAxisMapping(). If you want to be sure |
11018 | | * of the axis order, then make sure to call poSRS->SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER) |
11019 | | * before calling this method, and in that case, dfGeolocX must be a longitude |
11020 | | * or an easting value, and dfGeolocX a latitude or a northing value. |
11021 | | * |
11022 | | * This method uses GDALCreateGenImgProjTransformer2() underneath. |
11023 | | * |
11024 | | * @param dfGeolocX X coordinate of the position (longitude or easting if poSRS |
11025 | | * is null, otherwise consistent with poSRS data-axis-to-crs-axis mapping), |
11026 | | * where interpolation should be done. |
11027 | | * @param dfGeolocY Y coordinate of the position (latitude or northing if poSRS |
11028 | | * is null, otherwise consistent with poSRS data-axis-to-crs-axis mapping), |
11029 | | * where interpolation should be done. |
11030 | | * @param poSRS If set, override the natural CRS in which dfGeolocX, dfGeolocY are expressed |
11031 | | * @param[out] pdfPixel Pointer to the variable where to the store the pixel/column coordinate. |
11032 | | * @param[out] pdfLine Pointer to the variable where to the store the line coordinate. |
11033 | | * @param papszTransformerOptions Options accepted by GDALCreateGenImgProjTransformer2(), or nullptr. |
11034 | | * |
11035 | | * @return CE_None on success, or an error code on failure. |
11036 | | * @since GDAL 3.11 |
11037 | | */ |
11038 | | |
11039 | | CPLErr |
11040 | | GDALDataset::GeolocationToPixelLine(double dfGeolocX, double dfGeolocY, |
11041 | | const OGRSpatialReference *poSRS, |
11042 | | double *pdfPixel, double *pdfLine, |
11043 | | CSLConstList papszTransformerOptions) const |
11044 | 0 | { |
11045 | 0 | CPLStringList aosTO(papszTransformerOptions); |
11046 | |
|
11047 | 0 | if (poSRS) |
11048 | 0 | { |
11049 | 0 | const char *const apszOptions[] = {"FORMAT=WKT2", nullptr}; |
11050 | 0 | const std::string osWKT = poSRS->exportToWkt(apszOptions); |
11051 | 0 | aosTO.SetNameValue("DST_SRS", osWKT.c_str()); |
11052 | 0 | const auto eAxisMappingStrategy = poSRS->GetAxisMappingStrategy(); |
11053 | 0 | if (eAxisMappingStrategy == OAMS_TRADITIONAL_GIS_ORDER) |
11054 | 0 | aosTO.SetNameValue("DST_SRS_AXIS_MAPPING_STRATEGY", |
11055 | 0 | "TRADITIONAL_GIS_ORDER"); |
11056 | 0 | else if (eAxisMappingStrategy == OAMS_AUTHORITY_COMPLIANT) |
11057 | 0 | aosTO.SetNameValue("DST_SRS_AXIS_MAPPING_STRATEGY", |
11058 | 0 | "AUTHORITY_COMPLIANT"); |
11059 | 0 | else |
11060 | 0 | { |
11061 | 0 | const auto &anValues = poSRS->GetDataAxisToSRSAxisMapping(); |
11062 | 0 | std::string osVal; |
11063 | 0 | for (int v : anValues) |
11064 | 0 | { |
11065 | 0 | if (!osVal.empty()) |
11066 | 0 | osVal += ','; |
11067 | 0 | osVal += std::to_string(v); |
11068 | 0 | } |
11069 | 0 | aosTO.SetNameValue("DST_SRS_DATA_AXIS_TO_SRS_AXIS_MAPPING", |
11070 | 0 | osVal.c_str()); |
11071 | 0 | } |
11072 | 0 | } |
11073 | |
|
11074 | 0 | auto hTransformer = GDALCreateGenImgProjTransformer2( |
11075 | 0 | GDALDataset::ToHandle(const_cast<GDALDataset *>(this)), nullptr, |
11076 | 0 | aosTO.List()); |
11077 | 0 | if (hTransformer == nullptr) |
11078 | 0 | { |
11079 | 0 | return CE_Failure; |
11080 | 0 | } |
11081 | | |
11082 | 0 | double z = 0; |
11083 | 0 | int bSuccess = 0; |
11084 | 0 | GDALGenImgProjTransform(hTransformer, TRUE, 1, &dfGeolocX, &dfGeolocY, &z, |
11085 | 0 | &bSuccess); |
11086 | 0 | GDALDestroyTransformer(hTransformer); |
11087 | 0 | if (bSuccess) |
11088 | 0 | { |
11089 | 0 | if (pdfPixel) |
11090 | 0 | *pdfPixel = dfGeolocX; |
11091 | 0 | if (pdfLine) |
11092 | 0 | *pdfLine = dfGeolocY; |
11093 | 0 | return CE_None; |
11094 | 0 | } |
11095 | 0 | else |
11096 | 0 | { |
11097 | 0 | return CE_Failure; |
11098 | 0 | } |
11099 | 0 | } |
11100 | | |
11101 | | /************************************************************************/ |
11102 | | /* GDALDatasetGeolocationToPixelLine() */ |
11103 | | /************************************************************************/ |
11104 | | |
11105 | | /** Transform georeferenced coordinates to pixel/line coordinates. |
11106 | | * |
11107 | | * @see GDALDataset::GeolocationToPixelLine() |
11108 | | * @since GDAL 3.11 |
11109 | | */ |
11110 | | |
11111 | | CPLErr GDALDatasetGeolocationToPixelLine(GDALDatasetH hDS, double dfGeolocX, |
11112 | | double dfGeolocY, |
11113 | | OGRSpatialReferenceH hSRS, |
11114 | | double *pdfPixel, double *pdfLine, |
11115 | | CSLConstList papszTransformerOptions) |
11116 | 0 | { |
11117 | 0 | VALIDATE_POINTER1(hDS, "GDALDatasetGeolocationToPixelLine", CE_Failure); |
11118 | | |
11119 | 0 | GDALDataset *poDS = GDALDataset::FromHandle(hDS); |
11120 | 0 | return poDS->GeolocationToPixelLine( |
11121 | 0 | dfGeolocX, dfGeolocY, OGRSpatialReference::FromHandle(hSRS), pdfPixel, |
11122 | 0 | pdfLine, papszTransformerOptions); |
11123 | 0 | } |
11124 | | |
11125 | | /************************************************************************/ |
11126 | | /* GetExtent() */ |
11127 | | /************************************************************************/ |
11128 | | |
11129 | | /** Return extent of dataset in specified CRS. |
11130 | | * |
11131 | | * OGREnvelope.MinX/MaxX represents longitudes, and MinY/MaxY latitudes. |
11132 | | * |
11133 | | * For rasters, the base implementation of this method only succeeds if |
11134 | | * GetGeoTransform() and GetSpatialRef() succeed. |
11135 | | * For vectors, the base implementation of this method iterates over layers |
11136 | | * and call their OGRLayer::GetExtent() method. |
11137 | | * |
11138 | | * TestCapability(GDsCFastGetExtent) can be used to test if the execution |
11139 | | * time of this method is fast. |
11140 | | * |
11141 | | * This is the same as C function GDALGetExtent() |
11142 | | * |
11143 | | * @param[out] psExtent Pointer to output extent. Must NOT be null. |
11144 | | * @param poCRS CRS in which to express the extent. If not specified, this will |
11145 | | * be the raster CRS or the CRS of the first layer for a vector dataset. |
11146 | | * @return CE_None in case of success, CE_Failure otherwise |
11147 | | * @since GDAL 3.12 |
11148 | | */ |
11149 | | |
11150 | | CPLErr GDALDataset::GetExtent(OGREnvelope *psExtent, |
11151 | | const OGRSpatialReference *poCRS) const |
11152 | 0 | { |
11153 | 0 | const OGRSpatialReference *poThisCRS = GetSpatialRefRasterOnly(); |
11154 | 0 | int nLayerCount = 0; |
11155 | 0 | if (!poThisCRS) |
11156 | 0 | { |
11157 | 0 | nLayerCount = GetLayerCount(); |
11158 | 0 | if (nLayerCount >= 1) |
11159 | 0 | { |
11160 | 0 | if (auto poLayer = GetLayer(0)) |
11161 | 0 | poThisCRS = poLayer->GetSpatialRef(); |
11162 | 0 | } |
11163 | 0 | } |
11164 | 0 | if (!poCRS) |
11165 | 0 | poCRS = poThisCRS; |
11166 | 0 | else if (!poThisCRS) |
11167 | 0 | return CE_Failure; |
11168 | | |
11169 | 0 | *psExtent = OGREnvelope(); |
11170 | |
|
11171 | 0 | GDALGeoTransform gt; |
11172 | 0 | auto poThisDS = const_cast<GDALDataset *>(this); |
11173 | 0 | const bool bHasGT = poThisDS->GetGeoTransform(gt) == CE_None; |
11174 | 0 | if (bHasGT) |
11175 | 0 | { |
11176 | 0 | std::unique_ptr<OGRCoordinateTransformation> poCT; |
11177 | 0 | if (poCRS) |
11178 | 0 | { |
11179 | 0 | poCT.reset(OGRCreateCoordinateTransformation(poThisCRS, poCRS)); |
11180 | 0 | } |
11181 | |
|
11182 | 0 | constexpr int DENSIFY_POINT_COUNT = 21; |
11183 | 0 | double dfULX = gt[0]; |
11184 | 0 | double dfULY = gt[3]; |
11185 | 0 | double dfURX = 0, dfURY = 0; |
11186 | 0 | gt.Apply(nRasterXSize, 0, &dfURX, &dfURY); |
11187 | 0 | double dfLLX = 0, dfLLY = 0; |
11188 | 0 | gt.Apply(0, nRasterYSize, &dfLLX, &dfLLY); |
11189 | 0 | double dfLRX = 0, dfLRY = 0; |
11190 | 0 | gt.Apply(nRasterXSize, nRasterYSize, &dfLRX, &dfLRY); |
11191 | 0 | const double xmin = std::min({dfULX, dfURX, dfLLX, dfLRX}); |
11192 | 0 | const double ymin = std::min({dfULY, dfURY, dfLLY, dfLRY}); |
11193 | 0 | const double xmax = std::max({dfULX, dfURX, dfLLX, dfLRX}); |
11194 | 0 | const double ymax = std::max({dfULY, dfURY, dfLLY, dfLRY}); |
11195 | 0 | if (poCT) |
11196 | 0 | { |
11197 | 0 | OGREnvelope sEnvTmp; |
11198 | 0 | if (!poCT->TransformBounds(xmin, ymin, xmax, ymax, &(sEnvTmp.MinX), |
11199 | 0 | &(sEnvTmp.MinY), &(sEnvTmp.MaxX), |
11200 | 0 | &(sEnvTmp.MaxY), DENSIFY_POINT_COUNT)) |
11201 | 0 | { |
11202 | 0 | return CE_Failure; |
11203 | 0 | } |
11204 | 0 | *psExtent = sEnvTmp; |
11205 | 0 | } |
11206 | 0 | else |
11207 | 0 | { |
11208 | 0 | psExtent->MinX = xmin; |
11209 | 0 | psExtent->MinY = ymin; |
11210 | 0 | psExtent->MaxX = xmax; |
11211 | 0 | psExtent->MaxY = ymax; |
11212 | 0 | } |
11213 | 0 | } |
11214 | | |
11215 | 0 | if (nLayerCount > 0) |
11216 | 0 | { |
11217 | 0 | for (auto &&poLayer : poThisDS->GetLayers()) |
11218 | 0 | { |
11219 | 0 | auto poLayerCRS = poLayer->GetSpatialRef(); |
11220 | 0 | if (poLayerCRS) |
11221 | 0 | { |
11222 | 0 | OGREnvelope sLayerExtent; |
11223 | 0 | if (poLayer->GetExtent(&sLayerExtent) == OGRERR_NONE) |
11224 | 0 | { |
11225 | 0 | auto poCT = std::unique_ptr<OGRCoordinateTransformation>( |
11226 | 0 | OGRCreateCoordinateTransformation(poLayerCRS, poCRS)); |
11227 | 0 | if (poCT) |
11228 | 0 | { |
11229 | 0 | constexpr int DENSIFY_POINT_COUNT = 21; |
11230 | 0 | OGREnvelope sEnvTmp; |
11231 | 0 | if (poCT->TransformBounds( |
11232 | 0 | sLayerExtent.MinX, sLayerExtent.MinY, |
11233 | 0 | sLayerExtent.MaxX, sLayerExtent.MaxY, |
11234 | 0 | &(sEnvTmp.MinX), &(sEnvTmp.MinY), |
11235 | 0 | &(sEnvTmp.MaxX), &(sEnvTmp.MaxY), |
11236 | 0 | DENSIFY_POINT_COUNT)) |
11237 | 0 | { |
11238 | 0 | psExtent->Merge(sEnvTmp); |
11239 | 0 | } |
11240 | 0 | } |
11241 | 0 | } |
11242 | 0 | } |
11243 | 0 | } |
11244 | 0 | } |
11245 | |
|
11246 | 0 | return psExtent->IsInit() ? CE_None : CE_Failure; |
11247 | 0 | } |
11248 | | |
11249 | | /************************************************************************/ |
11250 | | /* GDALGetExtent() */ |
11251 | | /************************************************************************/ |
11252 | | |
11253 | | /** Return extent of dataset in specified CRS. |
11254 | | * |
11255 | | * OGREnvelope.MinX/MaxX represents longitudes, and MinY/MaxY latitudes. |
11256 | | * |
11257 | | * For rasters, the base implementation of this method only succeeds if |
11258 | | * GetGeoTransform() and GetSpatialRef() succeed. |
11259 | | * For vectors, the base implementation of this method iterates over layers |
11260 | | * and call their OGRLayer::GetExtent() method. |
11261 | | * |
11262 | | * TestCapability(GDsCFastGetExtent) can be used to test if the execution |
11263 | | * time of this method is fast. |
11264 | | * |
11265 | | * This is the same as C++ method GDALDataset::GetExtent() |
11266 | | * |
11267 | | * @param hDS Dataset handle. Must NOT be null. |
11268 | | * @param[out] psExtent Pointer to output extent. Must NOT be null. |
11269 | | * @param hCRS CRS in which to express the extent. If not specified, this will |
11270 | | * be the raster CRS or the CRS of the first layer for a vector dataset. |
11271 | | * @return extent in poCRS (valid only if IsInit() method returns true) |
11272 | | * @since GDAL 3.12 |
11273 | | */ |
11274 | | |
11275 | | CPLErr GDALGetExtent(GDALDatasetH hDS, OGREnvelope *psExtent, |
11276 | | OGRSpatialReferenceH hCRS) |
11277 | 0 | { |
11278 | 0 | VALIDATE_POINTER1(hDS, __func__, CE_Failure); |
11279 | 0 | VALIDATE_POINTER1(psExtent, __func__, CE_Failure); |
11280 | 0 | return GDALDataset::FromHandle(hDS)->GetExtent( |
11281 | 0 | psExtent, OGRSpatialReference::FromHandle(hCRS)); |
11282 | 0 | } |
11283 | | |
11284 | | /************************************************************************/ |
11285 | | /* GetExtentWGS84LongLat() */ |
11286 | | /************************************************************************/ |
11287 | | |
11288 | | /** Return extent of dataset in WGS84 longitude/latitude |
11289 | | * |
11290 | | * OGREnvelope.MinX/MaxX represents longitudes, and MinY/MaxY latitudes. |
11291 | | * |
11292 | | * TestCapability(GDsCFastGetExtentWGS84LongLat) can be used to test if the execution |
11293 | | * time of this method is fast. |
11294 | | * |
11295 | | * This is the same as C function GDALGetExtentWGS84LongLat() |
11296 | | * |
11297 | | * @return extent (valid only if IsInit() method returns true) |
11298 | | * @since GDAL 3.12 |
11299 | | */ |
11300 | | |
11301 | | CPLErr GDALDataset::GetExtentWGS84LongLat(OGREnvelope *psExtent) const |
11302 | 0 | { |
11303 | 0 | OGRSpatialReference oSRS_WGS84; |
11304 | 0 | oSRS_WGS84.SetFromUserInput("WGS84"); |
11305 | 0 | oSRS_WGS84.SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER); |
11306 | 0 | return GetExtent(psExtent, &oSRS_WGS84); |
11307 | 0 | } |
11308 | | |
11309 | | /************************************************************************/ |
11310 | | /* GDALGetExtentWGS84LongLat() */ |
11311 | | /************************************************************************/ |
11312 | | |
11313 | | /** Return extent of dataset in WGS84 longitude/latitude |
11314 | | * |
11315 | | * OGREnvelope.MinX/MaxX represents longitudes, and MinY/MaxY latitudes. |
11316 | | * |
11317 | | * TestCapability(GDsCFastGetExtentWGS84LongLat) can be used to test if the execution |
11318 | | * time of this method is fast. |
11319 | | * |
11320 | | * This is the same as C++ method GDALDataset::GetExtentWGS84LongLat() |
11321 | | * |
11322 | | * @param hDS Dataset handle. Must NOT be null. |
11323 | | * @param[out] psExtent Pointer to output extent. Must NOT be null. |
11324 | | * @return extent (valid only if IsInit() method returns true) |
11325 | | * @since GDAL 3.12 |
11326 | | */ |
11327 | | |
11328 | | CPLErr GDALGetExtentWGS84LongLat(GDALDatasetH hDS, OGREnvelope *psExtent) |
11329 | 0 | { |
11330 | 0 | VALIDATE_POINTER1(hDS, __func__, CE_Failure); |
11331 | 0 | VALIDATE_POINTER1(psExtent, __func__, CE_Failure); |
11332 | 0 | return GDALDataset::FromHandle(hDS)->GetExtentWGS84LongLat(psExtent); |
11333 | 0 | } |
11334 | | |
11335 | | /************************************************************************/ |
11336 | | /* ReportUpdateNotSupportedByDriver() */ |
11337 | | /************************************************************************/ |
11338 | | |
11339 | | //! @cond Doxygen_Suppress |
11340 | | |
11341 | | /* static */ |
11342 | | void GDALDataset::ReportUpdateNotSupportedByDriver(const char *pszDriverName) |
11343 | 0 | { |
11344 | 0 | CPLError(CE_Failure, CPLE_NotSupported, |
11345 | 0 | "The %s driver does not support update access to existing " |
11346 | 0 | "datasets.", |
11347 | 0 | pszDriverName); |
11348 | 0 | } |
11349 | | |
11350 | | //! @endcond |
11351 | | |
11352 | | /************************************************************************/ |
11353 | | /* BuildFilename() */ |
11354 | | /************************************************************************/ |
11355 | | |
11356 | | /** Generates a filename, potentially relative to another one. |
11357 | | * |
11358 | | * Given the path to a reference directory, and a path to a file |
11359 | | * referenced from it, build a path to the file that the current application |
11360 | | * can use. If the file path is already absolute, rather than relative, or if |
11361 | | * bRelativeToReferencePath is false, then the filename of interest will be |
11362 | | * returned unaltered. |
11363 | | * |
11364 | | * This is enhanced version of CPLProjectRelativeFilenameSafe() that takes |
11365 | | * into account the subdataset syntax. |
11366 | | * |
11367 | | * Examples: |
11368 | | * \code{.cpp} |
11369 | | * BuildFilename("tmp/abc.gif", "abc/def", true) == "abc/def/tmp/abc.gif" |
11370 | | * BuildFilename("../abc.gif", "/abc/def") == "/abc/abc.gif" |
11371 | | * BuildFilename("abc.gif", "C:\WIN", true) == "C:\WIN\abc.gif" |
11372 | | * BuildFilename("abc.gif", "C:\WIN", false) == "abc.gif" |
11373 | | * BuildFilename("/home/even/foo.tif", "/home/even/workdir", true) == "/home/even/foo.tif" |
11374 | | * \endcode |
11375 | | * |
11376 | | * @param pszFilename Filename of interest. |
11377 | | * @param pszReferencePath Path to a reference directory. |
11378 | | * @param bRelativeToReferencePath Whether pszFilename, if a relative path, is |
11379 | | * relative to pszReferencePath |
11380 | | * @since 3.11 |
11381 | | */ |
11382 | | |
11383 | | /* static */ |
11384 | | std::string GDALDataset::BuildFilename(const char *pszFilename, |
11385 | | const char *pszReferencePath, |
11386 | | bool bRelativeToReferencePath) |
11387 | 0 | { |
11388 | 0 | std::string osSrcDSName; |
11389 | 0 | if (pszReferencePath != nullptr && bRelativeToReferencePath) |
11390 | 0 | { |
11391 | | // Try subdatasetinfo API first |
11392 | | // Note: this will become the only branch when subdatasetinfo will become |
11393 | | // available for NITF_IM, RASTERLITE and TILEDB |
11394 | 0 | const auto oSubDSInfo{GDALGetSubdatasetInfo(pszFilename)}; |
11395 | 0 | if (oSubDSInfo && !oSubDSInfo->GetPathComponent().empty()) |
11396 | 0 | { |
11397 | 0 | auto path{oSubDSInfo->GetPathComponent()}; |
11398 | 0 | osSrcDSName = oSubDSInfo->ModifyPathComponent( |
11399 | 0 | CPLProjectRelativeFilenameSafe(pszReferencePath, path.c_str()) |
11400 | 0 | .c_str()); |
11401 | 0 | GDALDestroySubdatasetInfo(oSubDSInfo); |
11402 | 0 | } |
11403 | 0 | else |
11404 | 0 | { |
11405 | 0 | bool bDone = false; |
11406 | 0 | for (const char *pszSyntax : apszSpecialSubDatasetSyntax) |
11407 | 0 | { |
11408 | 0 | CPLString osPrefix(pszSyntax); |
11409 | 0 | osPrefix.resize(strchr(pszSyntax, ':') - pszSyntax + 1); |
11410 | 0 | if (pszSyntax[osPrefix.size()] == '"') |
11411 | 0 | osPrefix += '"'; |
11412 | 0 | if (EQUALN(pszFilename, osPrefix, osPrefix.size())) |
11413 | 0 | { |
11414 | 0 | if (STARTS_WITH_CI(pszSyntax + osPrefix.size(), "{ANY}")) |
11415 | 0 | { |
11416 | 0 | const char *pszLastPart = strrchr(pszFilename, ':') + 1; |
11417 | | // CSV:z:/foo.xyz |
11418 | 0 | if ((pszLastPart[0] == '/' || pszLastPart[0] == '\\') && |
11419 | 0 | pszLastPart - pszFilename >= 3 && |
11420 | 0 | pszLastPart[-3] == ':') |
11421 | 0 | { |
11422 | 0 | pszLastPart -= 2; |
11423 | 0 | } |
11424 | 0 | CPLString osPrefixFilename = pszFilename; |
11425 | 0 | osPrefixFilename.resize(pszLastPart - pszFilename); |
11426 | 0 | osSrcDSName = osPrefixFilename + |
11427 | 0 | CPLProjectRelativeFilenameSafe( |
11428 | 0 | pszReferencePath, pszLastPart); |
11429 | 0 | bDone = true; |
11430 | 0 | } |
11431 | 0 | else if (STARTS_WITH_CI(pszSyntax + osPrefix.size(), |
11432 | 0 | "{FILENAME}")) |
11433 | 0 | { |
11434 | 0 | CPLString osFilename(pszFilename + osPrefix.size()); |
11435 | 0 | size_t nPos = 0; |
11436 | 0 | if (osFilename.size() >= 3 && osFilename[1] == ':' && |
11437 | 0 | (osFilename[2] == '\\' || osFilename[2] == '/')) |
11438 | 0 | nPos = 2; |
11439 | 0 | nPos = osFilename.find( |
11440 | 0 | pszSyntax[osPrefix.size() + strlen("{FILENAME}")], |
11441 | 0 | nPos); |
11442 | 0 | if (nPos != std::string::npos) |
11443 | 0 | { |
11444 | 0 | const CPLString osSuffix = osFilename.substr(nPos); |
11445 | 0 | osFilename.resize(nPos); |
11446 | 0 | osSrcDSName = osPrefix + |
11447 | 0 | CPLProjectRelativeFilenameSafe( |
11448 | 0 | pszReferencePath, osFilename) + |
11449 | 0 | osSuffix; |
11450 | 0 | bDone = true; |
11451 | 0 | } |
11452 | 0 | } |
11453 | 0 | break; |
11454 | 0 | } |
11455 | 0 | } |
11456 | 0 | if (!bDone) |
11457 | 0 | { |
11458 | 0 | std::string osReferencePath = pszReferencePath; |
11459 | 0 | if (!CPLIsFilenameRelative(pszReferencePath)) |
11460 | 0 | { |
11461 | | // Simplify path by replacing "foo/a/../b" with "foo/b" |
11462 | 0 | while (STARTS_WITH(pszFilename, "../")) |
11463 | 0 | { |
11464 | 0 | osReferencePath = |
11465 | 0 | CPLGetPathSafe(osReferencePath.c_str()); |
11466 | 0 | pszFilename += strlen("../"); |
11467 | 0 | } |
11468 | 0 | } |
11469 | |
|
11470 | 0 | osSrcDSName = CPLProjectRelativeFilenameSafe( |
11471 | 0 | osReferencePath.c_str(), pszFilename); |
11472 | 0 | } |
11473 | 0 | } |
11474 | 0 | } |
11475 | 0 | else |
11476 | 0 | { |
11477 | 0 | osSrcDSName = pszFilename; |
11478 | 0 | } |
11479 | 0 | return osSrcDSName; |
11480 | 0 | } |
11481 | | |
11482 | | /************************************************************************/ |
11483 | | /* GDALMDArrayFromDataset */ |
11484 | | /************************************************************************/ |
11485 | | |
11486 | | class GDALMDArrayFromDataset final : public GDALMDArray |
11487 | | { |
11488 | | CPL_DISALLOW_COPY_ASSIGN(GDALMDArrayFromDataset) |
11489 | | |
11490 | | GDALDataset *const m_poDS; |
11491 | | const GDALExtendedDataType m_dt; |
11492 | | std::vector<std::shared_ptr<GDALDimension>> m_dims{}; |
11493 | | std::string m_osUnit{}; |
11494 | | std::vector<GByte> m_abyNoData{}; |
11495 | | std::shared_ptr<GDALMDArray> m_varX{}; |
11496 | | std::shared_ptr<GDALMDArray> m_varY{}; |
11497 | | std::shared_ptr<GDALMDArray> m_varBand{}; |
11498 | | const std::string m_osFilename; |
11499 | | int m_iBandDim = 0; |
11500 | | int m_iYDim = 1; |
11501 | | int m_iXDim = 2; |
11502 | | |
11503 | | bool ReadWrite(GDALRWFlag eRWFlag, const GUInt64 *arrayStartIdx, |
11504 | | const size_t *count, const GInt64 *arrayStep, |
11505 | | const GPtrDiff_t *bufferStride, |
11506 | | const GDALExtendedDataType &bufferDataType, |
11507 | | void *pBuffer) const; |
11508 | | |
11509 | | protected: |
11510 | | GDALMDArrayFromDataset(GDALDataset *poDS, CSLConstList papszOptions) |
11511 | 0 | : GDALAbstractMDArray(std::string(), |
11512 | 0 | std::string(poDS->GetDescription())), |
11513 | 0 | GDALMDArray(std::string(), std::string(poDS->GetDescription())), |
11514 | 0 | m_poDS(poDS), m_dt(GDALExtendedDataType::Create( |
11515 | 0 | poDS->GetRasterBand(1)->GetRasterDataType())), |
11516 | 0 | m_osFilename(poDS->GetDescription()) |
11517 | 0 | { |
11518 | 0 | m_poDS->Reference(); |
11519 | |
|
11520 | 0 | const int nBandCount = poDS->GetRasterCount(); |
11521 | 0 | for (int i = 1; i <= nBandCount; ++i) |
11522 | 0 | { |
11523 | 0 | const auto poBand = poDS->GetRasterBand(i); |
11524 | 0 | if (i == 1) |
11525 | 0 | m_osUnit = poBand->GetUnitType(); |
11526 | 0 | else if (m_osUnit != poBand->GetUnitType()) |
11527 | 0 | m_osUnit.clear(); |
11528 | |
|
11529 | 0 | std::vector<GByte> abyNoData; |
11530 | 0 | int bHasNoData = false; |
11531 | 0 | switch (poBand->GetRasterDataType()) |
11532 | 0 | { |
11533 | 0 | case GDT_Int64: |
11534 | 0 | { |
11535 | 0 | const auto nNoData = |
11536 | 0 | poBand->GetNoDataValueAsInt64(&bHasNoData); |
11537 | 0 | if (bHasNoData) |
11538 | 0 | { |
11539 | 0 | abyNoData.resize(m_dt.GetSize()); |
11540 | 0 | GDALCopyWords64(&nNoData, GDT_Int64, 0, &abyNoData[0], |
11541 | 0 | m_dt.GetNumericDataType(), 0, 1); |
11542 | 0 | } |
11543 | 0 | break; |
11544 | 0 | } |
11545 | | |
11546 | 0 | case GDT_UInt64: |
11547 | 0 | { |
11548 | 0 | const auto nNoData = |
11549 | 0 | poBand->GetNoDataValueAsUInt64(&bHasNoData); |
11550 | 0 | if (bHasNoData) |
11551 | 0 | { |
11552 | 0 | abyNoData.resize(m_dt.GetSize()); |
11553 | 0 | GDALCopyWords64(&nNoData, GDT_UInt64, 0, &abyNoData[0], |
11554 | 0 | m_dt.GetNumericDataType(), 0, 1); |
11555 | 0 | } |
11556 | 0 | break; |
11557 | 0 | } |
11558 | | |
11559 | 0 | default: |
11560 | 0 | { |
11561 | 0 | const auto dfNoData = poBand->GetNoDataValue(&bHasNoData); |
11562 | 0 | if (bHasNoData) |
11563 | 0 | { |
11564 | 0 | abyNoData.resize(m_dt.GetSize()); |
11565 | 0 | GDALCopyWords64(&dfNoData, GDT_Float64, 0, |
11566 | 0 | &abyNoData[0], |
11567 | 0 | m_dt.GetNumericDataType(), 0, 1); |
11568 | 0 | } |
11569 | 0 | break; |
11570 | 0 | } |
11571 | 0 | } |
11572 | | |
11573 | 0 | if (i == 1) |
11574 | 0 | m_abyNoData = std::move(abyNoData); |
11575 | 0 | else if (m_abyNoData != abyNoData) |
11576 | 0 | m_abyNoData.clear(); |
11577 | 0 | } |
11578 | | |
11579 | 0 | const int nXSize = poDS->GetRasterXSize(); |
11580 | 0 | const int nYSize = poDS->GetRasterYSize(); |
11581 | |
|
11582 | 0 | auto poSRS = poDS->GetSpatialRef(); |
11583 | 0 | std::string osTypeY; |
11584 | 0 | std::string osTypeX; |
11585 | 0 | std::string osDirectionY; |
11586 | 0 | std::string osDirectionX; |
11587 | 0 | if (poSRS && poSRS->GetAxesCount() == 2) |
11588 | 0 | { |
11589 | 0 | const auto &mapping = poSRS->GetDataAxisToSRSAxisMapping(); |
11590 | 0 | OGRAxisOrientation eOrientation1 = OAO_Other; |
11591 | 0 | poSRS->GetAxis(nullptr, 0, &eOrientation1); |
11592 | 0 | OGRAxisOrientation eOrientation2 = OAO_Other; |
11593 | 0 | poSRS->GetAxis(nullptr, 1, &eOrientation2); |
11594 | 0 | if (eOrientation1 == OAO_East && eOrientation2 == OAO_North) |
11595 | 0 | { |
11596 | 0 | if (mapping == std::vector<int>{1, 2}) |
11597 | 0 | { |
11598 | 0 | osTypeY = GDAL_DIM_TYPE_HORIZONTAL_Y; |
11599 | 0 | osDirectionY = "NORTH"; |
11600 | 0 | osTypeX = GDAL_DIM_TYPE_HORIZONTAL_X; |
11601 | 0 | osDirectionX = "EAST"; |
11602 | 0 | } |
11603 | 0 | } |
11604 | 0 | else if (eOrientation1 == OAO_North && eOrientation2 == OAO_East) |
11605 | 0 | { |
11606 | 0 | if (mapping == std::vector<int>{2, 1}) |
11607 | 0 | { |
11608 | 0 | osTypeY = GDAL_DIM_TYPE_HORIZONTAL_Y; |
11609 | 0 | osDirectionY = "NORTH"; |
11610 | 0 | osTypeX = GDAL_DIM_TYPE_HORIZONTAL_X; |
11611 | 0 | osDirectionX = "EAST"; |
11612 | 0 | } |
11613 | 0 | } |
11614 | 0 | } |
11615 | |
|
11616 | 0 | const bool bBandYX = [papszOptions, poDS, nBandCount]() |
11617 | 0 | { |
11618 | 0 | const char *pszDimOrder = |
11619 | 0 | CSLFetchNameValueDef(papszOptions, "DIM_ORDER", "AUTO"); |
11620 | 0 | if (EQUAL(pszDimOrder, "AUTO")) |
11621 | 0 | { |
11622 | 0 | const char *pszInterleave = |
11623 | 0 | poDS->GetMetadataItem("INTERLEAVE", "IMAGE_STRUCTURE"); |
11624 | 0 | return nBandCount == 1 || !pszInterleave || |
11625 | 0 | !EQUAL(pszInterleave, "PIXEL"); |
11626 | 0 | } |
11627 | 0 | else |
11628 | 0 | { |
11629 | 0 | return EQUAL(pszDimOrder, "BAND,Y,X"); |
11630 | 0 | } |
11631 | 0 | }(); |
11632 | 0 | const char *const pszBandDimName = |
11633 | 0 | CSLFetchNameValueDef(papszOptions, "BAND_DIM_NAME", "Band"); |
11634 | 0 | auto poBandDim = std::make_shared<GDALDimensionWeakIndexingVar>( |
11635 | 0 | "/", pszBandDimName, std::string(), std::string(), nBandCount); |
11636 | 0 | const char *const pszYDimName = |
11637 | 0 | CSLFetchNameValueDef(papszOptions, "Y_DIM_NAME", "Y"); |
11638 | 0 | auto poYDim = std::make_shared<GDALDimensionWeakIndexingVar>( |
11639 | 0 | "/", pszYDimName, osTypeY, osDirectionY, nYSize); |
11640 | 0 | const char *const pszXDimName = |
11641 | 0 | CSLFetchNameValueDef(papszOptions, "X_DIM_NAME", "X"); |
11642 | 0 | auto poXDim = std::make_shared<GDALDimensionWeakIndexingVar>( |
11643 | 0 | "/", pszXDimName, osTypeX, osDirectionX, nXSize); |
11644 | |
|
11645 | 0 | const char *const pszBandIndexingVarItem = CSLFetchNameValueDef( |
11646 | 0 | papszOptions, "BAND_INDEXING_VAR_ITEM", "{Description}"); |
11647 | 0 | if (EQUAL(pszBandIndexingVarItem, "{Description}")) |
11648 | 0 | { |
11649 | 0 | const auto oIndexingVarType = |
11650 | 0 | GDALExtendedDataType::CreateString(strlen("Band 65535")); |
11651 | 0 | auto poBandVar = MEMMDArray::Create("/", poBandDim->GetName(), |
11652 | 0 | {poBandDim}, oIndexingVarType); |
11653 | 0 | CPL_IGNORE_RET_VAL(poBandVar->Init()); |
11654 | 0 | for (int i = 0; i < nBandCount; ++i) |
11655 | 0 | { |
11656 | 0 | const char *pszDesc = |
11657 | 0 | poDS->GetRasterBand(i + 1)->GetDescription(); |
11658 | 0 | const std::string osBandName = |
11659 | 0 | pszDesc[0] ? pszDesc : CPLSPrintf("Band %d", i + 1); |
11660 | 0 | const char *pszBandName = osBandName.c_str(); |
11661 | 0 | const char *const apszBandVal[] = {pszBandName}; |
11662 | 0 | const GUInt64 anStartIdx[] = {static_cast<GUInt64>(i)}; |
11663 | 0 | const size_t anCount[] = {1}; |
11664 | 0 | const GInt64 arrayStep[] = {1}; |
11665 | 0 | const GPtrDiff_t anBufferStride[] = {1}; |
11666 | 0 | poBandVar->Write(anStartIdx, anCount, arrayStep, anBufferStride, |
11667 | 0 | oIndexingVarType, apszBandVal); |
11668 | 0 | } |
11669 | 0 | m_varBand = std::move(poBandVar); |
11670 | 0 | poBandDim->SetIndexingVariable(m_varBand); |
11671 | 0 | } |
11672 | 0 | else if (EQUAL(pszBandIndexingVarItem, "{Index}")) |
11673 | 0 | { |
11674 | 0 | const auto oIndexingVarType = |
11675 | 0 | GDALExtendedDataType::Create(GDT_Int32); |
11676 | 0 | auto poBandVar = MEMMDArray::Create("/", poBandDim->GetName(), |
11677 | 0 | {poBandDim}, oIndexingVarType); |
11678 | 0 | CPL_IGNORE_RET_VAL(poBandVar->Init()); |
11679 | 0 | for (int i = 0; i < nBandCount; ++i) |
11680 | 0 | { |
11681 | 0 | const int anBandIdx[] = {i + 1}; |
11682 | 0 | const GUInt64 anStartIdx[] = {static_cast<GUInt64>(i)}; |
11683 | 0 | const size_t anCount[] = {1}; |
11684 | 0 | const GInt64 arrayStep[] = {1}; |
11685 | 0 | const GPtrDiff_t anBufferStride[] = {1}; |
11686 | 0 | poBandVar->Write(anStartIdx, anCount, arrayStep, anBufferStride, |
11687 | 0 | oIndexingVarType, anBandIdx); |
11688 | 0 | } |
11689 | 0 | m_varBand = std::move(poBandVar); |
11690 | 0 | poBandDim->SetIndexingVariable(m_varBand); |
11691 | 0 | } |
11692 | 0 | else if (EQUAL(pszBandIndexingVarItem, "{ColorInterpretation}")) |
11693 | 0 | { |
11694 | 0 | size_t nMaxLen = 0; |
11695 | 0 | for (int i = 0; i < nBandCount; ++i) |
11696 | 0 | { |
11697 | 0 | const char *pszDesc = GDALGetColorInterpretationName( |
11698 | 0 | poDS->GetRasterBand(i + 1)->GetColorInterpretation()); |
11699 | 0 | nMaxLen = std::max(nMaxLen, strlen(pszDesc)); |
11700 | 0 | } |
11701 | 0 | const auto oIndexingVarType = |
11702 | 0 | GDALExtendedDataType::CreateString(nMaxLen); |
11703 | 0 | auto poBandVar = MEMMDArray::Create("/", poBandDim->GetName(), |
11704 | 0 | {poBandDim}, oIndexingVarType); |
11705 | 0 | CPL_IGNORE_RET_VAL(poBandVar->Init()); |
11706 | 0 | for (int i = 0; i < nBandCount; ++i) |
11707 | 0 | { |
11708 | 0 | const char *pszDesc = GDALGetColorInterpretationName( |
11709 | 0 | poDS->GetRasterBand(i + 1)->GetColorInterpretation()); |
11710 | 0 | const char *const apszBandVal[] = {pszDesc}; |
11711 | 0 | const GUInt64 anStartIdx[] = {static_cast<GUInt64>(i)}; |
11712 | 0 | const size_t anCount[] = {1}; |
11713 | 0 | const GInt64 arrayStep[] = {1}; |
11714 | 0 | const GPtrDiff_t anBufferStride[] = {1}; |
11715 | 0 | poBandVar->Write(anStartIdx, anCount, arrayStep, anBufferStride, |
11716 | 0 | oIndexingVarType, apszBandVal); |
11717 | 0 | } |
11718 | 0 | m_varBand = std::move(poBandVar); |
11719 | 0 | poBandDim->SetIndexingVariable(m_varBand); |
11720 | 0 | } |
11721 | 0 | else if (!EQUAL(pszBandIndexingVarItem, "{None}")) |
11722 | 0 | { |
11723 | 0 | const char *const pszBandIndexingVarType = CSLFetchNameValueDef( |
11724 | 0 | papszOptions, "BAND_INDEXING_VAR_TYPE", "String"); |
11725 | 0 | size_t nMaxLen = 0; |
11726 | 0 | if (EQUAL(pszBandIndexingVarType, "String")) |
11727 | 0 | { |
11728 | 0 | for (int i = 0; i < nBandCount; ++i) |
11729 | 0 | { |
11730 | 0 | const char *pszVal = |
11731 | 0 | poDS->GetRasterBand(i + 1)->GetMetadataItem( |
11732 | 0 | pszBandIndexingVarItem); |
11733 | 0 | if (pszVal) |
11734 | 0 | nMaxLen = std::max(nMaxLen, strlen(pszVal)); |
11735 | 0 | } |
11736 | 0 | } |
11737 | 0 | const auto oIndexingVarType = |
11738 | 0 | EQUAL(pszBandIndexingVarType, "String") |
11739 | 0 | ? GDALExtendedDataType::CreateString(nMaxLen) |
11740 | 0 | : EQUAL(pszBandIndexingVarType, "Integer") |
11741 | 0 | ? GDALExtendedDataType::Create(GDT_Int32) |
11742 | 0 | : GDALExtendedDataType::Create(GDT_Float64); |
11743 | 0 | auto poBandVar = MEMMDArray::Create("/", poBandDim->GetName(), |
11744 | 0 | {poBandDim}, oIndexingVarType); |
11745 | 0 | CPL_IGNORE_RET_VAL(poBandVar->Init()); |
11746 | 0 | for (int i = 0; i < nBandCount; ++i) |
11747 | 0 | { |
11748 | 0 | const GUInt64 anStartIdx[] = {static_cast<GUInt64>(i)}; |
11749 | 0 | const size_t anCount[] = {1}; |
11750 | 0 | const GInt64 arrayStep[] = {1}; |
11751 | 0 | const GPtrDiff_t anBufferStride[] = {1}; |
11752 | 0 | const char *pszVal = |
11753 | 0 | poDS->GetRasterBand(i + 1)->GetMetadataItem( |
11754 | 0 | pszBandIndexingVarItem); |
11755 | 0 | if (oIndexingVarType.GetClass() == GEDTC_STRING) |
11756 | 0 | { |
11757 | 0 | const char *const apszBandVal[] = {pszVal ? pszVal : ""}; |
11758 | 0 | poBandVar->Write(anStartIdx, anCount, arrayStep, |
11759 | 0 | anBufferStride, oIndexingVarType, |
11760 | 0 | apszBandVal); |
11761 | 0 | } |
11762 | 0 | else if (oIndexingVarType.GetNumericDataType() == GDT_Int32) |
11763 | 0 | { |
11764 | 0 | const int anVal[] = {pszVal ? atoi(pszVal) : 0}; |
11765 | 0 | poBandVar->Write(anStartIdx, anCount, arrayStep, |
11766 | 0 | anBufferStride, oIndexingVarType, anVal); |
11767 | 0 | } |
11768 | 0 | else |
11769 | 0 | { |
11770 | 0 | const double adfVal[] = {pszVal ? CPLAtof(pszVal) : 0.0}; |
11771 | 0 | poBandVar->Write(anStartIdx, anCount, arrayStep, |
11772 | 0 | anBufferStride, oIndexingVarType, adfVal); |
11773 | 0 | } |
11774 | 0 | } |
11775 | 0 | m_varBand = std::move(poBandVar); |
11776 | 0 | poBandDim->SetIndexingVariable(m_varBand); |
11777 | 0 | } |
11778 | |
|
11779 | 0 | GDALGeoTransform gt; |
11780 | 0 | if (m_poDS->GetGeoTransform(gt) == CE_None && gt[2] == 0 && gt[4] == 0) |
11781 | 0 | { |
11782 | 0 | m_varX = GDALMDArrayRegularlySpaced::Create( |
11783 | 0 | "/", poBandDim->GetName(), poXDim, gt[0], gt[1], 0.5); |
11784 | 0 | poXDim->SetIndexingVariable(m_varX); |
11785 | |
|
11786 | 0 | m_varY = GDALMDArrayRegularlySpaced::Create( |
11787 | 0 | "/", poYDim->GetName(), poYDim, gt[3], gt[5], 0.5); |
11788 | 0 | poYDim->SetIndexingVariable(m_varY); |
11789 | 0 | } |
11790 | 0 | if (bBandYX) |
11791 | 0 | { |
11792 | 0 | m_dims = {std::move(poBandDim), std::move(poYDim), |
11793 | 0 | std::move(poXDim)}; |
11794 | 0 | } |
11795 | 0 | else |
11796 | 0 | { |
11797 | 0 | m_iYDim = 0; |
11798 | 0 | m_iXDim = 1; |
11799 | 0 | m_iBandDim = 2; |
11800 | 0 | m_dims = {std::move(poYDim), std::move(poXDim), |
11801 | 0 | std::move(poBandDim)}; |
11802 | 0 | } |
11803 | 0 | } |
11804 | | |
11805 | | bool IRead(const GUInt64 *arrayStartIdx, const size_t *count, |
11806 | | const GInt64 *arrayStep, const GPtrDiff_t *bufferStride, |
11807 | | const GDALExtendedDataType &bufferDataType, |
11808 | | void *pDstBuffer) const override; |
11809 | | |
11810 | | bool IWrite(const GUInt64 *arrayStartIdx, const size_t *count, |
11811 | | const GInt64 *arrayStep, const GPtrDiff_t *bufferStride, |
11812 | | const GDALExtendedDataType &bufferDataType, |
11813 | | const void *pSrcBuffer) override |
11814 | 0 | { |
11815 | 0 | return ReadWrite(GF_Write, arrayStartIdx, count, arrayStep, |
11816 | 0 | bufferStride, bufferDataType, |
11817 | 0 | const_cast<void *>(pSrcBuffer)); |
11818 | 0 | } |
11819 | | |
11820 | | public: |
11821 | | ~GDALMDArrayFromDataset() override |
11822 | 0 | { |
11823 | 0 | m_poDS->ReleaseRef(); |
11824 | 0 | } |
11825 | | |
11826 | | static std::shared_ptr<GDALMDArray> Create(GDALDataset *poDS, |
11827 | | CSLConstList papszOptions) |
11828 | 0 | { |
11829 | 0 | auto array(std::shared_ptr<GDALMDArrayFromDataset>( |
11830 | 0 | new GDALMDArrayFromDataset(poDS, papszOptions))); |
11831 | 0 | array->SetSelf(array); |
11832 | 0 | return array; |
11833 | 0 | } |
11834 | | |
11835 | | bool IsWritable() const override |
11836 | 0 | { |
11837 | 0 | return m_poDS->GetAccess() == GA_Update; |
11838 | 0 | } |
11839 | | |
11840 | | const std::string &GetFilename() const override |
11841 | 0 | { |
11842 | 0 | return m_osFilename; |
11843 | 0 | } |
11844 | | |
11845 | | const std::vector<std::shared_ptr<GDALDimension>> & |
11846 | | GetDimensions() const override |
11847 | 0 | { |
11848 | 0 | return m_dims; |
11849 | 0 | } |
11850 | | |
11851 | | const GDALExtendedDataType &GetDataType() const override |
11852 | 0 | { |
11853 | 0 | return m_dt; |
11854 | 0 | } |
11855 | | |
11856 | | const std::string &GetUnit() const override |
11857 | 0 | { |
11858 | 0 | return m_osUnit; |
11859 | 0 | } |
11860 | | |
11861 | | const void *GetRawNoDataValue() const override |
11862 | 0 | { |
11863 | 0 | return m_abyNoData.empty() ? nullptr : m_abyNoData.data(); |
11864 | 0 | } |
11865 | | |
11866 | | double GetOffset(bool *pbHasOffset, |
11867 | | GDALDataType *peStorageType) const override |
11868 | 0 | { |
11869 | 0 | double dfRes = 0; |
11870 | 0 | int bHasOffset = false; |
11871 | 0 | auto poFirstBand = m_poDS->GetRasterBand(1); |
11872 | 0 | if (poFirstBand) // to avoid -Wnull-dereference |
11873 | 0 | { |
11874 | 0 | dfRes = poFirstBand->GetOffset(&bHasOffset); |
11875 | 0 | for (int i = 2; bHasOffset && i <= m_poDS->GetRasterCount(); ++i) |
11876 | 0 | { |
11877 | 0 | const double dfOtherRes = |
11878 | 0 | m_poDS->GetRasterBand(i)->GetOffset(&bHasOffset); |
11879 | 0 | bHasOffset = bHasOffset && (dfOtherRes == dfRes); |
11880 | 0 | } |
11881 | 0 | } |
11882 | 0 | if (pbHasOffset) |
11883 | 0 | *pbHasOffset = CPL_TO_BOOL(bHasOffset); |
11884 | 0 | if (peStorageType) |
11885 | 0 | *peStorageType = GDT_Unknown; |
11886 | 0 | return dfRes; |
11887 | 0 | } |
11888 | | |
11889 | | double GetScale(bool *pbHasScale, |
11890 | | GDALDataType *peStorageType) const override |
11891 | 0 | { |
11892 | 0 | double dfRes = 0; |
11893 | 0 | int bHasScale = false; |
11894 | 0 | auto poFirstBand = m_poDS->GetRasterBand(1); |
11895 | 0 | if (poFirstBand) // to avoid -Wnull-dereference |
11896 | 0 | { |
11897 | 0 | dfRes = poFirstBand->GetScale(&bHasScale); |
11898 | 0 | for (int i = 2; bHasScale && i <= m_poDS->GetRasterCount(); ++i) |
11899 | 0 | { |
11900 | 0 | const double dfOtherRes = |
11901 | 0 | m_poDS->GetRasterBand(i)->GetScale(&bHasScale); |
11902 | 0 | bHasScale = bHasScale && (dfOtherRes == dfRes); |
11903 | 0 | } |
11904 | 0 | } |
11905 | 0 | if (pbHasScale) |
11906 | 0 | *pbHasScale = CPL_TO_BOOL(bHasScale); |
11907 | 0 | if (peStorageType) |
11908 | 0 | *peStorageType = GDT_Unknown; |
11909 | 0 | return dfRes; |
11910 | 0 | } |
11911 | | |
11912 | | std::shared_ptr<OGRSpatialReference> GetSpatialRef() const override |
11913 | 0 | { |
11914 | 0 | auto poSrcSRS = m_poDS->GetSpatialRef(); |
11915 | 0 | if (!poSrcSRS) |
11916 | 0 | return nullptr; |
11917 | 0 | auto poSRS = std::shared_ptr<OGRSpatialReference>(poSrcSRS->Clone()); |
11918 | |
|
11919 | 0 | auto axisMapping = poSRS->GetDataAxisToSRSAxisMapping(); |
11920 | 0 | for (auto &m : axisMapping) |
11921 | 0 | { |
11922 | 0 | if (m == 1) |
11923 | 0 | m = m_iXDim + 1; |
11924 | 0 | else if (m == 2) |
11925 | 0 | m = m_iYDim + 1; |
11926 | 0 | else |
11927 | 0 | m = 0; |
11928 | 0 | } |
11929 | 0 | poSRS->SetDataAxisToSRSAxisMapping(axisMapping); |
11930 | 0 | return poSRS; |
11931 | 0 | } |
11932 | | |
11933 | | std::vector<GUInt64> GetBlockSize() const override |
11934 | 0 | { |
11935 | 0 | int nBlockXSize = 0; |
11936 | 0 | int nBlockYSize = 0; |
11937 | 0 | m_poDS->GetRasterBand(1)->GetBlockSize(&nBlockXSize, &nBlockYSize); |
11938 | 0 | if (m_iBandDim == 0) |
11939 | 0 | { |
11940 | 0 | return std::vector<GUInt64>{1, static_cast<GUInt64>(nBlockYSize), |
11941 | 0 | static_cast<GUInt64>(nBlockXSize)}; |
11942 | 0 | } |
11943 | 0 | else |
11944 | 0 | { |
11945 | 0 | return std::vector<GUInt64>{static_cast<GUInt64>(nBlockYSize), |
11946 | 0 | static_cast<GUInt64>(nBlockXSize), 1}; |
11947 | 0 | } |
11948 | 0 | } |
11949 | | |
11950 | | std::vector<std::shared_ptr<GDALAttribute>> |
11951 | | GetAttributes(CSLConstList) const override |
11952 | 0 | { |
11953 | 0 | std::vector<std::shared_ptr<GDALAttribute>> res; |
11954 | 0 | auto papszMD = m_poDS->GetMetadata(); |
11955 | 0 | for (auto iter = papszMD; iter && iter[0]; ++iter) |
11956 | 0 | { |
11957 | 0 | char *pszKey = nullptr; |
11958 | 0 | const char *pszValue = CPLParseNameValue(*iter, &pszKey); |
11959 | 0 | if (pszKey && pszValue) |
11960 | 0 | { |
11961 | 0 | res.emplace_back( |
11962 | 0 | std::make_shared<GDALMDIAsAttribute>(pszKey, pszValue)); |
11963 | 0 | } |
11964 | 0 | CPLFree(pszKey); |
11965 | 0 | } |
11966 | 0 | return res; |
11967 | 0 | } |
11968 | | }; |
11969 | | |
11970 | | bool GDALMDArrayFromDataset::IRead(const GUInt64 *arrayStartIdx, |
11971 | | const size_t *count, const GInt64 *arrayStep, |
11972 | | const GPtrDiff_t *bufferStride, |
11973 | | const GDALExtendedDataType &bufferDataType, |
11974 | | void *pDstBuffer) const |
11975 | 0 | { |
11976 | 0 | return ReadWrite(GF_Read, arrayStartIdx, count, arrayStep, bufferStride, |
11977 | 0 | bufferDataType, pDstBuffer); |
11978 | 0 | } |
11979 | | |
11980 | | /************************************************************************/ |
11981 | | /* ReadWrite() */ |
11982 | | /************************************************************************/ |
11983 | | |
11984 | | bool GDALMDArrayFromDataset::ReadWrite( |
11985 | | GDALRWFlag eRWFlag, const GUInt64 *arrayStartIdx, const size_t *count, |
11986 | | const GInt64 *arrayStep, const GPtrDiff_t *bufferStride, |
11987 | | const GDALExtendedDataType &bufferDataType, void *pBuffer) const |
11988 | 0 | { |
11989 | 0 | const auto eDT(bufferDataType.GetNumericDataType()); |
11990 | 0 | const auto nDTSize(GDALGetDataTypeSizeBytes(eDT)); |
11991 | 0 | const int nX = |
11992 | 0 | arrayStep[m_iXDim] > 0 |
11993 | 0 | ? static_cast<int>(arrayStartIdx[m_iXDim]) |
11994 | 0 | : static_cast<int>(arrayStartIdx[m_iXDim] - |
11995 | 0 | (count[m_iXDim] - 1) * -arrayStep[m_iXDim]); |
11996 | 0 | const int nY = |
11997 | 0 | arrayStep[m_iYDim] > 0 |
11998 | 0 | ? static_cast<int>(arrayStartIdx[m_iYDim]) |
11999 | 0 | : static_cast<int>(arrayStartIdx[m_iYDim] - |
12000 | 0 | (count[m_iYDim] - 1) * -arrayStep[m_iYDim]); |
12001 | 0 | const int nSizeX = |
12002 | 0 | static_cast<int>(count[m_iXDim] * ABS(arrayStep[m_iXDim])); |
12003 | 0 | const int nSizeY = |
12004 | 0 | static_cast<int>(count[m_iYDim] * ABS(arrayStep[m_iYDim])); |
12005 | 0 | GByte *pabyBuffer = static_cast<GByte *>(pBuffer); |
12006 | 0 | int nStrideXSign = 1; |
12007 | 0 | if (arrayStep[m_iXDim] < 0) |
12008 | 0 | { |
12009 | 0 | pabyBuffer += (count[m_iXDim] - 1) * bufferStride[m_iXDim] * nDTSize; |
12010 | 0 | nStrideXSign = -1; |
12011 | 0 | } |
12012 | 0 | int nStrideYSign = 1; |
12013 | 0 | if (arrayStep[m_iYDim] < 0) |
12014 | 0 | { |
12015 | 0 | pabyBuffer += (count[m_iYDim] - 1) * bufferStride[m_iYDim] * nDTSize; |
12016 | 0 | nStrideYSign = -1; |
12017 | 0 | } |
12018 | 0 | const GSpacing nPixelSpace = |
12019 | 0 | static_cast<GSpacing>(nStrideXSign * bufferStride[m_iXDim] * nDTSize); |
12020 | 0 | const GSpacing nLineSpace = |
12021 | 0 | static_cast<GSpacing>(nStrideYSign * bufferStride[m_iYDim] * nDTSize); |
12022 | 0 | const GSpacing nBandSpace = |
12023 | 0 | static_cast<GSpacing>(bufferStride[m_iBandDim] * nDTSize); |
12024 | 0 | std::vector<int> anBandList; |
12025 | 0 | for (int i = 0; i < static_cast<int>(count[m_iBandDim]); ++i) |
12026 | 0 | anBandList.push_back(1 + static_cast<int>(arrayStartIdx[m_iBandDim]) + |
12027 | 0 | i * static_cast<int>(arrayStep[m_iBandDim])); |
12028 | |
|
12029 | 0 | return m_poDS->RasterIO(eRWFlag, nX, nY, nSizeX, nSizeY, pabyBuffer, |
12030 | 0 | static_cast<int>(count[m_iXDim]), |
12031 | 0 | static_cast<int>(count[m_iYDim]), eDT, |
12032 | 0 | static_cast<int>(count[m_iBandDim]), |
12033 | 0 | anBandList.data(), nPixelSpace, nLineSpace, |
12034 | 0 | nBandSpace, nullptr) == CE_None; |
12035 | 0 | } |
12036 | | |
12037 | | /************************************************************************/ |
12038 | | /* AsMDArray() */ |
12039 | | /************************************************************************/ |
12040 | | |
12041 | | /** Return a view of this dataset as a 3D multidimensional GDALMDArray. |
12042 | | * |
12043 | | * If this dataset is not already marked as shared, it will be, so that the |
12044 | | * returned array holds a reference to it. |
12045 | | * |
12046 | | * If the dataset has a geotransform attached, the X and Y dimensions of the |
12047 | | * returned array will have an associated indexing variable. |
12048 | | * |
12049 | | * The currently supported list of options is: |
12050 | | * <ul> |
12051 | | * <li>DIM_ORDER=<order> where order can be "AUTO", "Band,Y,X" or "Y,X,Band". |
12052 | | * "Band,Y,X" means that the first (slowest changing) dimension is Band |
12053 | | * and the last (fastest changing direction) is X |
12054 | | * "Y,X,Band" means that the first (slowest changing) dimension is Y |
12055 | | * and the last (fastest changing direction) is Band. |
12056 | | * "AUTO" (the default) selects "Band,Y,X" for single band datasets, or takes |
12057 | | * into account the INTERLEAVE metadata item in the IMAGE_STRUCTURE domain. |
12058 | | * If it equals BAND, then "Band,Y,X" is used. Otherwise (if it equals PIXEL), |
12059 | | * "Y,X,Band" is use. |
12060 | | * </li> |
12061 | | * <li>BAND_INDEXING_VAR_ITEM={Description}|{None}|{Index}|{ColorInterpretation}|<BandMetadataItem>: |
12062 | | * item from which to build the band indexing variable. |
12063 | | * <ul> |
12064 | | * <li>"{Description}", the default, means to use the band description (or "Band index" if empty).</li> |
12065 | | * <li>"{None}" means that no band indexing variable must be created.</li> |
12066 | | * <li>"{Index}" means that the band index (starting at one) is used.</li> |
12067 | | * <li>"{ColorInterpretation}" means that the band color interpretation is used (i.e. "Red", "Green", "Blue").</li> |
12068 | | * <li><BandMetadataItem> is the name of a band metadata item to use.</li> |
12069 | | * </ul> |
12070 | | * </li> |
12071 | | * <li>BAND_INDEXING_VAR_TYPE=String|Real|Integer: the data type of the band |
12072 | | * indexing variable, when BAND_INDEXING_VAR_ITEM corresponds to a band metadata item. |
12073 | | * Defaults to String. |
12074 | | * </li> |
12075 | | * <li>BAND_DIM_NAME=<string>: Name of the band dimension. |
12076 | | * Defaults to "Band". |
12077 | | * </li> |
12078 | | * <li>X_DIM_NAME=<string>: Name of the X dimension. Defaults to "X". |
12079 | | * </li> |
12080 | | * <li>Y_DIM_NAME=<string>: Name of the Y dimension. Defaults to "Y". |
12081 | | * </li> |
12082 | | * </ul> |
12083 | | * |
12084 | | * This is the same as the C function GDALDatasetAsMDArray(). |
12085 | | * |
12086 | | * The "reverse" method is GDALMDArray::AsClassicDataset(). |
12087 | | * |
12088 | | * @param papszOptions Null-terminated list of strings, or nullptr. |
12089 | | * @return a new array, or nullptr. |
12090 | | * |
12091 | | * @since GDAL 3.12 |
12092 | | */ |
12093 | | std::shared_ptr<GDALMDArray> GDALDataset::AsMDArray(CSLConstList papszOptions) |
12094 | 0 | { |
12095 | 0 | if (!GetShared()) |
12096 | 0 | { |
12097 | 0 | MarkAsShared(); |
12098 | 0 | } |
12099 | 0 | if (nBands == 0 || nRasterXSize == 0 || nRasterYSize == 0) |
12100 | 0 | { |
12101 | 0 | ReportError( |
12102 | 0 | CE_Failure, CPLE_AppDefined, |
12103 | 0 | "Degenerated array (band, Y and/or X dimension of size zero)"); |
12104 | 0 | return nullptr; |
12105 | 0 | } |
12106 | 0 | const GDALDataType eDT = papoBands[0]->GetRasterDataType(); |
12107 | 0 | for (int i = 1; i < nBands; ++i) |
12108 | 0 | { |
12109 | 0 | if (eDT != papoBands[i]->GetRasterDataType()) |
12110 | 0 | { |
12111 | 0 | ReportError(CE_Failure, CPLE_AppDefined, |
12112 | 0 | "Non-uniform data type amongst bands"); |
12113 | 0 | return nullptr; |
12114 | 0 | } |
12115 | 0 | } |
12116 | 0 | const char *pszDimOrder = |
12117 | 0 | CSLFetchNameValueDef(papszOptions, "DIM_ORDER", "AUTO"); |
12118 | 0 | if (!EQUAL(pszDimOrder, "AUTO") && !EQUAL(pszDimOrder, "Band,Y,X") && |
12119 | 0 | !EQUAL(pszDimOrder, "Y,X,Band")) |
12120 | 0 | { |
12121 | 0 | ReportError(CE_Failure, CPLE_IllegalArg, |
12122 | 0 | "Illegal value for DIM_ORDER option"); |
12123 | 0 | return nullptr; |
12124 | 0 | } |
12125 | 0 | return GDALMDArrayFromDataset::Create(this, papszOptions); |
12126 | 0 | } |