/src/libxslt/libexslt/sets.c
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1 | | #define IN_LIBEXSLT |
2 | | #include "libexslt/libexslt.h" |
3 | | |
4 | | #include <libxml/tree.h> |
5 | | #include <libxml/xpath.h> |
6 | | #include <libxml/xpathInternals.h> |
7 | | |
8 | | #include <libxslt/xsltutils.h> |
9 | | #include <libxslt/xsltInternals.h> |
10 | | #include <libxslt/extensions.h> |
11 | | |
12 | | #include "exslt.h" |
13 | | |
14 | | /** |
15 | | * exsltSetsDifferenceFunction: |
16 | | * @ctxt: an XPath parser context |
17 | | * @nargs: the number of arguments |
18 | | * |
19 | | * Wraps #xmlXPathDifference for use by the XPath processor |
20 | | */ |
21 | | static void |
22 | 529 | exsltSetsDifferenceFunction (xmlXPathParserContextPtr ctxt, int nargs) { |
23 | 529 | xmlNodeSetPtr arg1, arg2, ret; |
24 | | |
25 | 529 | if (nargs != 2) { |
26 | 3 | xmlXPathSetArityError(ctxt); |
27 | 3 | return; |
28 | 3 | } |
29 | | |
30 | 526 | arg2 = xmlXPathPopNodeSet(ctxt); |
31 | 526 | if (xmlXPathCheckError(ctxt)) |
32 | 2 | return; |
33 | | |
34 | 524 | arg1 = xmlXPathPopNodeSet(ctxt); |
35 | 524 | if (xmlXPathCheckError(ctxt)) { |
36 | 3 | xmlXPathFreeNodeSet(arg2); |
37 | 3 | return; |
38 | 3 | } |
39 | | |
40 | 521 | ret = xmlXPathDifference(arg1, arg2); |
41 | | |
42 | 521 | if (ret != arg1) |
43 | 262 | xmlXPathFreeNodeSet(arg1); |
44 | 521 | xmlXPathFreeNodeSet(arg2); |
45 | | |
46 | 521 | xmlXPathReturnNodeSet(ctxt, ret); |
47 | 521 | } |
48 | | |
49 | | /** |
50 | | * exsltSetsIntersectionFunction: |
51 | | * @ctxt: an XPath parser context |
52 | | * @nargs: the number of arguments |
53 | | * |
54 | | * Wraps #xmlXPathIntersection for use by the XPath processor |
55 | | */ |
56 | | static void |
57 | 355 | exsltSetsIntersectionFunction (xmlXPathParserContextPtr ctxt, int nargs) { |
58 | 355 | xmlNodeSetPtr arg1, arg2, ret; |
59 | | |
60 | 355 | if (nargs != 2) { |
61 | 1 | xmlXPathSetArityError(ctxt); |
62 | 1 | return; |
63 | 1 | } |
64 | | |
65 | 354 | arg2 = xmlXPathPopNodeSet(ctxt); |
66 | 354 | if (xmlXPathCheckError(ctxt)) |
67 | 1 | return; |
68 | | |
69 | 353 | arg1 = xmlXPathPopNodeSet(ctxt); |
70 | 353 | if (xmlXPathCheckError(ctxt)) { |
71 | 1 | xmlXPathFreeNodeSet(arg2); |
72 | 1 | return; |
73 | 1 | } |
74 | | |
75 | 352 | ret = xmlXPathIntersection(arg1, arg2); |
76 | | |
77 | 352 | xmlXPathFreeNodeSet(arg1); |
78 | 352 | xmlXPathFreeNodeSet(arg2); |
79 | | |
80 | 352 | xmlXPathReturnNodeSet(ctxt, ret); |
81 | 352 | } |
82 | | |
83 | | /** |
84 | | * exsltSetsDistinctFunction: |
85 | | * @ctxt: an XPath parser context |
86 | | * @nargs: the number of arguments |
87 | | * |
88 | | * Wraps #xmlXPathDistinct for use by the XPath processor |
89 | | */ |
90 | | static void |
91 | 440 | exsltSetsDistinctFunction (xmlXPathParserContextPtr ctxt, int nargs) { |
92 | 440 | xmlXPathObjectPtr obj; |
93 | 440 | xmlNodeSetPtr ns, ret; |
94 | 440 | int boolval = 0; |
95 | 440 | void *user = NULL; |
96 | | |
97 | 440 | if (nargs != 1) { |
98 | 1 | xmlXPathSetArityError(ctxt); |
99 | 1 | return; |
100 | 1 | } |
101 | | |
102 | 439 | if (ctxt->value != NULL) { |
103 | 439 | boolval = ctxt->value->boolval; |
104 | 439 | user = ctxt->value->user; |
105 | 439 | ctxt->value->boolval = 0; |
106 | 439 | ctxt->value->user = NULL; |
107 | 439 | } |
108 | 439 | ns = xmlXPathPopNodeSet(ctxt); |
109 | 439 | if (xmlXPathCheckError(ctxt)) |
110 | 1 | return; |
111 | | |
112 | | /* !!! must be sorted !!! */ |
113 | 438 | ret = xmlXPathDistinctSorted(ns); |
114 | | |
115 | 438 | if (ret != ns) |
116 | 279 | xmlXPathFreeNodeSet(ns); |
117 | | |
118 | 438 | obj = xmlXPathWrapNodeSet(ret); |
119 | 438 | if (obj != NULL) { |
120 | 426 | obj->user = user; |
121 | 426 | obj->boolval = boolval; |
122 | 426 | } |
123 | 438 | valuePush(ctxt, obj); |
124 | 438 | } |
125 | | |
126 | | /** |
127 | | * exsltSetsHasSameNodesFunction: |
128 | | * @ctxt: an XPath parser context |
129 | | * @nargs: the number of arguments |
130 | | * |
131 | | * Wraps #xmlXPathHasSameNodes for use by the XPath processor |
132 | | */ |
133 | | static void |
134 | | exsltSetsHasSameNodesFunction (xmlXPathParserContextPtr ctxt, |
135 | 2.18k | int nargs) { |
136 | 2.18k | xmlNodeSetPtr arg1, arg2; |
137 | 2.18k | int ret; |
138 | | |
139 | 2.18k | if (nargs != 2) { |
140 | 2 | xmlXPathSetArityError(ctxt); |
141 | 2 | return; |
142 | 2 | } |
143 | | |
144 | 2.18k | arg2 = xmlXPathPopNodeSet(ctxt); |
145 | 2.18k | if (xmlXPathCheckError(ctxt)) |
146 | 1 | return; |
147 | | |
148 | 2.18k | arg1 = xmlXPathPopNodeSet(ctxt); |
149 | 2.18k | if (xmlXPathCheckError(ctxt)) { |
150 | 1 | xmlXPathFreeNodeSet(arg2); |
151 | 1 | return; |
152 | 1 | } |
153 | | |
154 | 2.18k | ret = xmlXPathHasSameNodes(arg1, arg2); |
155 | | |
156 | 2.18k | xmlXPathFreeNodeSet(arg1); |
157 | 2.18k | xmlXPathFreeNodeSet(arg2); |
158 | | |
159 | 2.18k | xmlXPathReturnBoolean(ctxt, ret); |
160 | 2.18k | } |
161 | | |
162 | | /** |
163 | | * exsltSetsLeadingFunction: |
164 | | * @ctxt: an XPath parser context |
165 | | * @nargs: the number of arguments |
166 | | * |
167 | | * Wraps #xmlXPathLeading for use by the XPath processor |
168 | | */ |
169 | | static void |
170 | 665 | exsltSetsLeadingFunction (xmlXPathParserContextPtr ctxt, int nargs) { |
171 | 665 | xmlNodeSetPtr arg1, arg2, ret; |
172 | | |
173 | 665 | if (nargs != 2) { |
174 | 1 | xmlXPathSetArityError(ctxt); |
175 | 1 | return; |
176 | 1 | } |
177 | | |
178 | 664 | arg2 = xmlXPathPopNodeSet(ctxt); |
179 | 664 | if (xmlXPathCheckError(ctxt)) |
180 | 0 | return; |
181 | | |
182 | 664 | arg1 = xmlXPathPopNodeSet(ctxt); |
183 | 664 | if (xmlXPathCheckError(ctxt)) { |
184 | 1 | xmlXPathFreeNodeSet(arg2); |
185 | 1 | return; |
186 | 1 | } |
187 | | |
188 | | /* If the second node set is empty, then the first node set is |
189 | | * returned. |
190 | | */ |
191 | 663 | if (xmlXPathNodeSetIsEmpty(arg2)) { |
192 | 367 | xmlXPathReturnNodeSet(ctxt, arg1); |
193 | | |
194 | 367 | xmlXPathFreeNodeSet(arg2); |
195 | | |
196 | 367 | return; |
197 | 367 | } |
198 | | /* !!! must be sorted */ |
199 | 296 | ret = xmlXPathNodeLeadingSorted(arg1, xmlXPathNodeSetItem(arg2, 0)); |
200 | | |
201 | 296 | xmlXPathFreeNodeSet(arg1); |
202 | 296 | xmlXPathFreeNodeSet(arg2); |
203 | | |
204 | 296 | xmlXPathReturnNodeSet(ctxt, ret); |
205 | 296 | } |
206 | | |
207 | | /** |
208 | | * exsltSetsTrailingFunction: |
209 | | * @ctxt: an XPath parser context |
210 | | * @nargs: the number of arguments |
211 | | * |
212 | | * Wraps #xmlXPathTrailing for use by the XPath processor |
213 | | */ |
214 | | static void |
215 | 415 | exsltSetsTrailingFunction (xmlXPathParserContextPtr ctxt, int nargs) { |
216 | 415 | xmlNodeSetPtr arg1, arg2, ret; |
217 | | |
218 | 415 | if (nargs != 2) { |
219 | 1 | xmlXPathSetArityError(ctxt); |
220 | 1 | return; |
221 | 1 | } |
222 | | |
223 | 414 | arg2 = xmlXPathPopNodeSet(ctxt); |
224 | 414 | if (xmlXPathCheckError(ctxt)) |
225 | 5 | return; |
226 | | |
227 | 409 | arg1 = xmlXPathPopNodeSet(ctxt); |
228 | 409 | if (xmlXPathCheckError(ctxt)) { |
229 | 2 | xmlXPathFreeNodeSet(arg2); |
230 | 2 | return; |
231 | 2 | } |
232 | | |
233 | | /* If the second node set is empty, then the first node set is |
234 | | * returned. |
235 | | */ |
236 | 407 | if (xmlXPathNodeSetIsEmpty(arg2)) { |
237 | 136 | xmlXPathReturnNodeSet(ctxt, arg1); |
238 | | |
239 | 136 | xmlXPathFreeNodeSet(arg2); |
240 | | |
241 | 136 | return; |
242 | 136 | } |
243 | | /* !!! mist be sorted */ |
244 | 271 | ret = xmlXPathNodeTrailingSorted(arg1, xmlXPathNodeSetItem(arg2, 0)); |
245 | | |
246 | 271 | xmlXPathFreeNodeSet(arg1); |
247 | 271 | xmlXPathFreeNodeSet(arg2); |
248 | | |
249 | 271 | xmlXPathReturnNodeSet(ctxt, ret); |
250 | 271 | } |
251 | | |
252 | | /** |
253 | | * exsltSetsRegister: |
254 | | * |
255 | | * Registers the EXSLT - Sets module |
256 | | */ |
257 | | |
258 | | void |
259 | 2 | exsltSetsRegister (void) { |
260 | 2 | xsltRegisterExtModuleFunction ((const xmlChar *) "difference", |
261 | 2 | EXSLT_SETS_NAMESPACE, |
262 | 2 | exsltSetsDifferenceFunction); |
263 | 2 | xsltRegisterExtModuleFunction ((const xmlChar *) "intersection", |
264 | 2 | EXSLT_SETS_NAMESPACE, |
265 | 2 | exsltSetsIntersectionFunction); |
266 | 2 | xsltRegisterExtModuleFunction ((const xmlChar *) "distinct", |
267 | 2 | EXSLT_SETS_NAMESPACE, |
268 | 2 | exsltSetsDistinctFunction); |
269 | 2 | xsltRegisterExtModuleFunction ((const xmlChar *) "has-same-node", |
270 | 2 | EXSLT_SETS_NAMESPACE, |
271 | 2 | exsltSetsHasSameNodesFunction); |
272 | 2 | xsltRegisterExtModuleFunction ((const xmlChar *) "leading", |
273 | 2 | EXSLT_SETS_NAMESPACE, |
274 | 2 | exsltSetsLeadingFunction); |
275 | 2 | xsltRegisterExtModuleFunction ((const xmlChar *) "trailing", |
276 | 2 | EXSLT_SETS_NAMESPACE, |
277 | 2 | exsltSetsTrailingFunction); |
278 | 2 | } |
279 | | |
280 | | /** |
281 | | * exsltSetsXpathCtxtRegister: |
282 | | * |
283 | | * Registers the EXSLT - Sets module for use outside XSLT |
284 | | */ |
285 | | int |
286 | | exsltSetsXpathCtxtRegister (xmlXPathContextPtr ctxt, const xmlChar *prefix) |
287 | 0 | { |
288 | 0 | if (ctxt |
289 | 0 | && prefix |
290 | 0 | && !xmlXPathRegisterNs(ctxt, |
291 | 0 | prefix, |
292 | 0 | (const xmlChar *) EXSLT_SETS_NAMESPACE) |
293 | 0 | && !xmlXPathRegisterFuncNS(ctxt, |
294 | 0 | (const xmlChar *) "difference", |
295 | 0 | (const xmlChar *) EXSLT_SETS_NAMESPACE, |
296 | 0 | exsltSetsDifferenceFunction) |
297 | 0 | && !xmlXPathRegisterFuncNS(ctxt, |
298 | 0 | (const xmlChar *) "intersection", |
299 | 0 | (const xmlChar *) EXSLT_SETS_NAMESPACE, |
300 | 0 | exsltSetsIntersectionFunction) |
301 | 0 | && !xmlXPathRegisterFuncNS(ctxt, |
302 | 0 | (const xmlChar *) "distinct", |
303 | 0 | (const xmlChar *) EXSLT_SETS_NAMESPACE, |
304 | 0 | exsltSetsDistinctFunction) |
305 | 0 | && !xmlXPathRegisterFuncNS(ctxt, |
306 | 0 | (const xmlChar *) "has-same-node", |
307 | 0 | (const xmlChar *) EXSLT_SETS_NAMESPACE, |
308 | 0 | exsltSetsHasSameNodesFunction) |
309 | 0 | && !xmlXPathRegisterFuncNS(ctxt, |
310 | 0 | (const xmlChar *) "leading", |
311 | 0 | (const xmlChar *) EXSLT_SETS_NAMESPACE, |
312 | 0 | exsltSetsLeadingFunction) |
313 | 0 | && !xmlXPathRegisterFuncNS(ctxt, |
314 | 0 | (const xmlChar *) "trailing", |
315 | 0 | (const xmlChar *) EXSLT_SETS_NAMESPACE, |
316 | 0 | exsltSetsTrailingFunction)) { |
317 | 0 | return 0; |
318 | 0 | } |
319 | 0 | return -1; |
320 | 0 | } |