/src/xpdf-4.05/splash/SplashFTFontEngine.cc
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1 | | //======================================================================== |
2 | | // |
3 | | // SplashFTFontEngine.cc |
4 | | // |
5 | | // Copyright 2003-2013 Glyph & Cog, LLC |
6 | | // |
7 | | //======================================================================== |
8 | | |
9 | | #include <aconf.h> |
10 | | |
11 | | #if HAVE_FREETYPE_H |
12 | | |
13 | | #include <stdio.h> |
14 | | #ifndef _WIN32 |
15 | | # include <unistd.h> |
16 | | #endif |
17 | | #include "gmem.h" |
18 | | #include "gmempp.h" |
19 | | #include "GString.h" |
20 | | #include "gfile.h" |
21 | | #include "FoFiTrueType.h" |
22 | | #include "FoFiType1C.h" |
23 | | #include "SplashFTFontFile.h" |
24 | | #include "SplashFTFontEngine.h" |
25 | | #include FT_MODULE_H |
26 | | #ifdef FT_CFF_DRIVER_H |
27 | | # include FT_CFF_DRIVER_H |
28 | | #endif |
29 | | |
30 | | #ifdef VMS |
31 | | #if (__VMS_VER < 70000000) |
32 | | extern "C" int unlink(char *filename); |
33 | | #endif |
34 | | #endif |
35 | | |
36 | | //------------------------------------------------------------------------ |
37 | | |
38 | 0 | static void fileWrite(void *stream, const char *data, int len) { |
39 | 0 | fwrite(data, 1, len, (FILE *)stream); |
40 | 0 | } |
41 | | |
42 | | #if LOAD_FONTS_FROM_MEM |
43 | | static void gstringWrite(void *stream, const char *data, int len) { |
44 | | ((GString *)stream)->append(data, len); |
45 | | } |
46 | | #endif |
47 | | |
48 | | //------------------------------------------------------------------------ |
49 | | // SplashFTFontEngine |
50 | | //------------------------------------------------------------------------ |
51 | | |
52 | | SplashFTFontEngine::SplashFTFontEngine(GBool aaA, Guint flagsA, |
53 | 0 | FT_Library libA) { |
54 | 0 | FT_Int major, minor, patch; |
55 | |
|
56 | 0 | aa = aaA; |
57 | 0 | flags = flagsA; |
58 | 0 | lib = libA; |
59 | | |
60 | | // as of FT 2.1.8, CID fonts are indexed by CID instead of GID |
61 | 0 | FT_Library_Version(lib, &major, &minor, &patch); |
62 | 0 | useCIDs = major > 2 || |
63 | 0 | (major == 2 && (minor > 1 || (minor == 1 && patch > 7))); |
64 | 0 | } |
65 | | |
66 | 0 | SplashFTFontEngine *SplashFTFontEngine::init(GBool aaA, Guint flagsA) { |
67 | 0 | FT_Library libA; |
68 | |
|
69 | 0 | if (FT_Init_FreeType(&libA)) { |
70 | 0 | return NULL; |
71 | 0 | } |
72 | 0 | return new SplashFTFontEngine(aaA, flagsA, libA); |
73 | 0 | } |
74 | | |
75 | 0 | SplashFTFontEngine::~SplashFTFontEngine() { |
76 | 0 | FT_Done_FreeType(lib); |
77 | 0 | } |
78 | | |
79 | | SplashFontFile *SplashFTFontEngine::loadType1Font(SplashFontFileID *idA, |
80 | | #if LOAD_FONTS_FROM_MEM |
81 | | GString *fontBuf, |
82 | | #else |
83 | | char *fileName, |
84 | | GBool deleteFile, |
85 | | #endif |
86 | 0 | const char **enc) { |
87 | 0 | return SplashFTFontFile::loadType1Font(this, idA, splashFontType1, |
88 | | #if LOAD_FONTS_FROM_MEM |
89 | | fontBuf, |
90 | | #else |
91 | 0 | fileName, deleteFile, |
92 | 0 | #endif |
93 | 0 | enc); |
94 | 0 | } |
95 | | |
96 | | SplashFontFile *SplashFTFontEngine::loadType1CFont(SplashFontFileID *idA, |
97 | | #if LOAD_FONTS_FROM_MEM |
98 | | GString *fontBuf, |
99 | | #else |
100 | | char *fileName, |
101 | | GBool deleteFile, |
102 | | #endif |
103 | 0 | const char **enc) { |
104 | 0 | return SplashFTFontFile::loadType1Font(this, idA, splashFontType1C, |
105 | | #if LOAD_FONTS_FROM_MEM |
106 | | fontBuf, |
107 | | #else |
108 | 0 | fileName, deleteFile, |
109 | 0 | #endif |
110 | 0 | enc); |
111 | 0 | } |
112 | | |
113 | | SplashFontFile *SplashFTFontEngine::loadOpenTypeT1CFont(SplashFontFileID *idA, |
114 | | #if LOAD_FONTS_FROM_MEM |
115 | | GString *fontBuf, |
116 | | #else |
117 | | char *fileName, |
118 | | GBool deleteFile, |
119 | | #endif |
120 | 0 | const char **enc) { |
121 | 0 | FoFiTrueType *ff; |
122 | | #if LOAD_FONTS_FROM_MEM |
123 | | GString *fontBuf2; |
124 | | #else |
125 | 0 | GString *tmpFileName; |
126 | 0 | FILE *tmpFile; |
127 | 0 | #endif |
128 | 0 | SplashFontFile *ret; |
129 | |
|
130 | | #if LOAD_FONTS_FROM_MEM |
131 | | if (!(ff = FoFiTrueType::make(fontBuf->getCString(), fontBuf->getLength(), |
132 | | 0, gTrue))) { |
133 | | #else |
134 | 0 | if (!(ff = FoFiTrueType::load(fileName, 0, gTrue))) { |
135 | 0 | #endif |
136 | 0 | return NULL; |
137 | 0 | } |
138 | 0 | if (ff->isHeadlessCFF()) { |
139 | | #if LOAD_FONTS_FROM_MEM |
140 | | fontBuf2 = new GString(); |
141 | | ff->convertToType1(NULL, enc, gFalse, &gstringWrite, fontBuf2); |
142 | | delete ff; |
143 | | ret = SplashFTFontFile::loadType1Font(this, idA, splashFontType1, |
144 | | fontBuf2, enc); |
145 | | if (ret) { |
146 | | delete fontBuf; |
147 | | } else { |
148 | | delete fontBuf2; |
149 | | } |
150 | | #else |
151 | 0 | tmpFileName = NULL; |
152 | 0 | if (!openTempFile(&tmpFileName, &tmpFile, "wb", NULL)) { |
153 | 0 | delete ff; |
154 | 0 | return NULL; |
155 | 0 | } |
156 | 0 | ff->convertToType1(NULL, enc, gFalse, &fileWrite, tmpFile); |
157 | 0 | delete ff; |
158 | 0 | fclose(tmpFile); |
159 | 0 | ret = SplashFTFontFile::loadType1Font(this, idA, splashFontType1, |
160 | 0 | tmpFileName->getCString(), |
161 | 0 | gTrue, enc); |
162 | 0 | if (ret) { |
163 | 0 | if (deleteFile) { |
164 | 0 | unlink(fileName); |
165 | 0 | } |
166 | 0 | } else { |
167 | 0 | unlink(tmpFileName->getCString()); |
168 | 0 | } |
169 | 0 | delete tmpFileName; |
170 | 0 | #endif |
171 | 0 | } else { |
172 | 0 | delete ff; |
173 | 0 | ret = SplashFTFontFile::loadType1Font(this, idA, splashFontOpenTypeT1C, |
174 | | #if LOAD_FONTS_FROM_MEM |
175 | | fontBuf, |
176 | | #else |
177 | 0 | fileName, deleteFile, |
178 | 0 | #endif |
179 | 0 | enc); |
180 | 0 | } |
181 | 0 | return ret; |
182 | 0 | } |
183 | | |
184 | | SplashFontFile *SplashFTFontEngine::loadCIDFont(SplashFontFileID *idA, |
185 | | #if LOAD_FONTS_FROM_MEM |
186 | | GString *fontBuf, |
187 | | #else |
188 | | char *fileName, |
189 | | GBool deleteFile, |
190 | | #endif |
191 | | int *codeToGID, |
192 | 0 | int codeToGIDLen) { |
193 | 0 | FoFiType1C *ff; |
194 | 0 | int *cidToGIDMap; |
195 | 0 | int nCIDs; |
196 | 0 | SplashFontFile *ret; |
197 | | |
198 | | // check for a CFF font |
199 | 0 | if (codeToGID) { |
200 | 0 | cidToGIDMap = NULL; |
201 | 0 | nCIDs = 0; |
202 | 0 | } else if (useCIDs) { |
203 | 0 | cidToGIDMap = NULL; |
204 | 0 | nCIDs = 0; |
205 | | #if LOAD_FONTS_FROM_MEM |
206 | | } else if ((ff = FoFiType1C::make(fontBuf->getCString(), |
207 | | fontBuf->getLength()))) { |
208 | | #else |
209 | 0 | } else if ((ff = FoFiType1C::load(fileName))) { |
210 | 0 | #endif |
211 | 0 | cidToGIDMap = ff->getCIDToGIDMap(&nCIDs); |
212 | 0 | delete ff; |
213 | 0 | } else { |
214 | 0 | cidToGIDMap = NULL; |
215 | 0 | nCIDs = 0; |
216 | 0 | } |
217 | 0 | ret = SplashFTFontFile::loadCIDFont(this, idA, splashFontCID, |
218 | | #if LOAD_FONTS_FROM_MEM |
219 | | fontBuf, |
220 | | #else |
221 | 0 | fileName, deleteFile, |
222 | 0 | #endif |
223 | 0 | codeToGID ? codeToGID : cidToGIDMap, |
224 | 0 | codeToGID ? codeToGIDLen : nCIDs); |
225 | 0 | if (!ret) { |
226 | 0 | gfree(cidToGIDMap); |
227 | 0 | } |
228 | 0 | return ret; |
229 | 0 | } |
230 | | |
231 | | SplashFontFile *SplashFTFontEngine::loadOpenTypeCFFFont(SplashFontFileID *idA, |
232 | | #if LOAD_FONTS_FROM_MEM |
233 | | GString *fontBuf, |
234 | | #else |
235 | | char *fileName, |
236 | | GBool deleteFile, |
237 | | #endif |
238 | | int *codeToGID, |
239 | 0 | int codeToGIDLen) { |
240 | 0 | FoFiTrueType *ff; |
241 | | #if LOAD_FONTS_FROM_MEM |
242 | | GString *fontBuf2; |
243 | | #else |
244 | 0 | GString *tmpFileName; |
245 | 0 | FILE *tmpFile; |
246 | 0 | #endif |
247 | 0 | char *cffStart; |
248 | 0 | int cffLength; |
249 | 0 | int *cidToGIDMap; |
250 | 0 | int nCIDs; |
251 | 0 | SplashFontFile *ret; |
252 | |
|
253 | | #if LOAD_FONTS_FROM_MEM |
254 | | if (!(ff = FoFiTrueType::make(fontBuf->getCString(), fontBuf->getLength(), |
255 | | 0, gTrue))) { |
256 | | #else |
257 | 0 | if (!(ff = FoFiTrueType::load(fileName, 0, gTrue))) { |
258 | 0 | #endif |
259 | 0 | return NULL; |
260 | 0 | } |
261 | 0 | cidToGIDMap = NULL; |
262 | 0 | nCIDs = 0; |
263 | 0 | if (ff->isHeadlessCFF()) { |
264 | 0 | if (!ff->getCFFBlock(&cffStart, &cffLength)) { |
265 | 0 | return NULL; |
266 | 0 | } |
267 | | #if LOAD_FONTS_FROM_MEM |
268 | | fontBuf2 = new GString(cffStart, cffLength); |
269 | | if (!useCIDs) { |
270 | | cidToGIDMap = ff->getCIDToGIDMap(&nCIDs); |
271 | | } |
272 | | ret = SplashFTFontFile::loadCIDFont(this, idA, splashFontOpenTypeCFF, |
273 | | fontBuf2, cidToGIDMap, nCIDs); |
274 | | if (ret) { |
275 | | delete fontBuf; |
276 | | } else { |
277 | | delete fontBuf2; |
278 | | } |
279 | | #else |
280 | 0 | tmpFileName = NULL; |
281 | 0 | if (!openTempFile(&tmpFileName, &tmpFile, "wb", NULL)) { |
282 | 0 | delete ff; |
283 | 0 | return NULL; |
284 | 0 | } |
285 | 0 | fwrite(cffStart, 1, cffLength, tmpFile); |
286 | 0 | fclose(tmpFile); |
287 | 0 | if (!useCIDs) { |
288 | 0 | cidToGIDMap = ff->getCIDToGIDMap(&nCIDs); |
289 | 0 | } |
290 | 0 | ret = SplashFTFontFile::loadCIDFont(this, idA, splashFontOpenTypeCFF, |
291 | 0 | tmpFileName->getCString(), gTrue, |
292 | 0 | cidToGIDMap, nCIDs); |
293 | 0 | if (ret) { |
294 | 0 | if (deleteFile) { |
295 | 0 | unlink(fileName); |
296 | 0 | } |
297 | 0 | } else { |
298 | 0 | unlink(tmpFileName->getCString()); |
299 | 0 | } |
300 | 0 | delete tmpFileName; |
301 | 0 | #endif |
302 | 0 | } else { |
303 | 0 | if (!codeToGID && !useCIDs && ff->isOpenTypeCFF()) { |
304 | 0 | cidToGIDMap = ff->getCIDToGIDMap(&nCIDs); |
305 | 0 | } |
306 | 0 | ret = SplashFTFontFile::loadCIDFont(this, idA, splashFontOpenTypeCFF, |
307 | | #if LOAD_FONTS_FROM_MEM |
308 | | fontBuf, |
309 | | #else |
310 | 0 | fileName, deleteFile, |
311 | 0 | #endif |
312 | 0 | codeToGID ? codeToGID : cidToGIDMap, |
313 | 0 | codeToGID ? codeToGIDLen : nCIDs); |
314 | 0 | } |
315 | 0 | delete ff; |
316 | 0 | if (!ret) { |
317 | 0 | gfree(cidToGIDMap); |
318 | 0 | } |
319 | 0 | return ret; |
320 | 0 | } |
321 | | |
322 | | SplashFontFile *SplashFTFontEngine::loadTrueTypeFont(SplashFontFileID *idA, |
323 | | #if LOAD_FONTS_FROM_MEM |
324 | | GString *fontBuf, |
325 | | #else |
326 | | char *fileName, |
327 | | GBool deleteFile, |
328 | | #endif |
329 | | int fontNum, |
330 | | int *codeToGID, |
331 | 0 | int codeToGIDLen) { |
332 | 0 | FoFiTrueType *ff; |
333 | | #if LOAD_FONTS_FROM_MEM |
334 | | GString *fontBuf2; |
335 | | #else |
336 | 0 | GString *tmpFileName; |
337 | 0 | FILE *tmpFile; |
338 | 0 | #endif |
339 | 0 | SplashFontFile *ret; |
340 | |
|
341 | | #if LOAD_FONTS_FROM_MEM |
342 | | if (!(ff = FoFiTrueType::make(fontBuf->getCString(), fontBuf->getLength(), |
343 | | fontNum))) { |
344 | | #else |
345 | 0 | if (!(ff = FoFiTrueType::load(fileName, fontNum))) { |
346 | 0 | #endif |
347 | 0 | return NULL; |
348 | 0 | } |
349 | | #if LOAD_FONTS_FROM_MEM |
350 | | fontBuf2 = new GString; |
351 | | ff->writeTTF(&gstringWrite, fontBuf2); |
352 | | #else |
353 | 0 | tmpFileName = NULL; |
354 | 0 | if (!openTempFile(&tmpFileName, &tmpFile, "wb", NULL)) { |
355 | 0 | delete ff; |
356 | 0 | return NULL; |
357 | 0 | } |
358 | 0 | ff->writeTTF(&fileWrite, tmpFile); |
359 | 0 | fclose(tmpFile); |
360 | 0 | #endif |
361 | 0 | delete ff; |
362 | 0 | ret = SplashFTFontFile::loadTrueTypeFont(this, idA, splashFontTrueType, |
363 | | #if LOAD_FONTS_FROM_MEM |
364 | | fontBuf2, |
365 | | #else |
366 | 0 | tmpFileName->getCString(), gTrue, |
367 | 0 | #endif |
368 | 0 | 0, codeToGID, codeToGIDLen); |
369 | | #if LOAD_FONTS_FROM_MEM |
370 | | if (ret) { |
371 | | delete fontBuf; |
372 | | } else { |
373 | | delete fontBuf2; |
374 | | } |
375 | | #else |
376 | 0 | if (ret) { |
377 | 0 | if (deleteFile) { |
378 | 0 | unlink(fileName); |
379 | 0 | } |
380 | 0 | } else { |
381 | 0 | unlink(tmpFileName->getCString()); |
382 | 0 | } |
383 | 0 | delete tmpFileName; |
384 | 0 | #endif |
385 | 0 | return ret; |
386 | 0 | } |
387 | | |
388 | | #endif // HAVE_FREETYPE_H |