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| 1 /* | |
| 2 * functions.c: Implementation of the XSLT extra functions | |
| 3 * | |
| 4 * Reference: | |
| 5 * http://www.w3.org/TR/1999/REC-xslt-19991116 | |
| 6 * | |
| 7 * See Copyright for the status of this software. | |
| 8 * | |
| 9 * daniel@veillard.com | |
| 10 * Bjorn Reese <breese@users.sourceforge.net> for number formatting | |
| 11 */ | |
| 12 | |
| 13 #define IN_LIBXSLT | |
| 14 #include "libxslt.h" | |
| 15 | |
| 16 #include <string.h> | |
| 17 | |
| 18 #ifdef HAVE_SYS_TYPES_H | |
| 19 #include <sys/types.h> | |
| 20 #endif | |
| 21 #ifdef HAVE_CTYPE_H | |
| 22 #include <ctype.h> | |
| 23 #endif | |
| 24 | |
| 25 #include <libxml/xmlmemory.h> | |
| 26 #include <libxml/parser.h> | |
| 27 #include <libxml/tree.h> | |
| 28 #include <libxml/valid.h> | |
| 29 #include <libxml/hash.h> | |
| 30 #include <libxml/xmlerror.h> | |
| 31 #include <libxml/xpath.h> | |
| 32 #include <libxml/xpathInternals.h> | |
| 33 #include <libxml/parserInternals.h> | |
| 34 #include <libxml/uri.h> | |
| 35 #include <libxml/xpointer.h> | |
| 36 #include "xslt.h" | |
| 37 #include "xsltInternals.h" | |
| 38 #include "xsltutils.h" | |
| 39 #include "functions.h" | |
| 40 #include "extensions.h" | |
| 41 #include "numbersInternals.h" | |
| 42 #include "keys.h" | |
| 43 #include "documents.h" | |
| 44 | |
| 45 #ifdef WITH_XSLT_DEBUG | |
| 46 #define WITH_XSLT_DEBUG_FUNCTION | |
| 47 #endif | |
| 48 | |
| 49 /* | |
| 50 * Some versions of DocBook XSL use the vendor string to detect | |
| 51 * supporting chunking, this is a workaround to be considered | |
| 52 * in the list of decent XSLT processors <grin/> | |
| 53 */ | |
| 54 #define DOCBOOK_XSL_HACK | |
| 55 | |
| 56 /** | |
| 57 * xsltXPathFunctionLookup: | |
| 58 * @ctxt: a void * but the XSLT transformation context actually | |
| 59 * @name: the function name | |
| 60 * @ns_uri: the function namespace URI | |
| 61 * | |
| 62 * This is the entry point when a function is needed by the XPath | |
| 63 * interpretor. | |
| 64 * | |
| 65 * Returns the callback function or NULL if not found | |
| 66 */ | |
| 67 xmlXPathFunction | |
| 68 xsltXPathFunctionLookup (xmlXPathContextPtr ctxt, | |
| 69 const xmlChar *name, const xmlChar *ns_uri) { | |
| 70 xmlXPathFunction ret; | |
| 71 | |
| 72 if ((ctxt == NULL) || (name == NULL) || (ns_uri == NULL)) | |
| 73 return (NULL); | |
| 74 | |
| 75 #ifdef WITH_XSLT_DEBUG_FUNCTION | |
| 76 xsltGenericDebug(xsltGenericDebugContext, | |
| 77 "Lookup function {%s}%s\n", ns_uri, name); | |
| 78 #endif | |
| 79 | |
| 80 /* give priority to context-level functions */ | |
| 81 /* | |
| 82 ret = (xmlXPathFunction) xmlHashLookup2(ctxt->funcHash, name, ns_uri); | |
| 83 */ | |
| 84 XML_CAST_FPTR(ret) = xmlHashLookup2(ctxt->funcHash, name, ns_uri); | |
| 85 | |
| 86 if (ret == NULL) | |
| 87 ret = xsltExtModuleFunctionLookup(name, ns_uri); | |
| 88 | |
| 89 #ifdef WITH_XSLT_DEBUG_FUNCTION | |
| 90 if (ret != NULL) | |
| 91 xsltGenericDebug(xsltGenericDebugContext, | |
| 92 "found function %s\n", name); | |
| 93 #endif | |
| 94 return(ret); | |
| 95 } | |
| 96 | |
| 97 | |
| 98 /************************************************************************ | |
| 99 * * | |
| 100 * Module interfaces * | |
| 101 * * | |
| 102 ************************************************************************/ | |
| 103 | |
| 104 static void | |
| 105 xsltDocumentFunctionLoadDocument(xmlXPathParserContextPtr ctxt, xmlChar* URI) | |
| 106 { | |
| 107 xsltTransformContextPtr tctxt; | |
| 108 xmlURIPtr uri; | |
| 109 xmlChar *fragment; | |
| 110 xsltDocumentPtr idoc; /* document info */ | |
| 111 xmlDocPtr doc; | |
| 112 xmlXPathContextPtr xptrctxt = NULL; | |
| 113 xmlXPathObjectPtr resObj = NULL; | |
| 114 | |
| 115 tctxt = xsltXPathGetTransformContext(ctxt); | |
| 116 if (tctxt == NULL) { | |
| 117 xsltTransformError(NULL, NULL, NULL, | |
| 118 "document() : internal error tctxt == NULL\n"); | |
| 119 valuePush(ctxt, xmlXPathNewNodeSet(NULL)); | |
| 120 return; | |
| 121 } | |
| 122 | |
| 123 uri = xmlParseURI((const char *) URI); | |
| 124 if (uri == NULL) { | |
| 125 xsltTransformError(tctxt, NULL, NULL, | |
| 126 "document() : failed to parse URI\n"); | |
| 127 valuePush(ctxt, xmlXPathNewNodeSet(NULL)); | |
| 128 return; | |
| 129 } | |
| 130 | |
| 131 /* | |
| 132 * check for and remove fragment identifier | |
| 133 */ | |
| 134 fragment = (xmlChar *)uri->fragment; | |
| 135 if (fragment != NULL) { | |
| 136 xmlChar *newURI; | |
| 137 uri->fragment = NULL; | |
| 138 newURI = xmlSaveUri(uri); | |
| 139 idoc = xsltLoadDocument(tctxt, newURI); | |
| 140 xmlFree(newURI); | |
| 141 } else | |
| 142 idoc = xsltLoadDocument(tctxt, URI); | |
| 143 xmlFreeURI(uri); | |
| 144 | |
| 145 if (idoc == NULL) { | |
| 146 if ((URI == NULL) || | |
| 147 (URI[0] == '#') || | |
| 148 ((tctxt->style->doc != NULL) && | |
| 149 (xmlStrEqual(tctxt->style->doc->URL, URI)))) | |
| 150 { | |
| 151 /* | |
| 152 * This selects the stylesheet's doc itself. | |
| 153 */ | |
| 154 doc = tctxt->style->doc; | |
| 155 } else { | |
| 156 valuePush(ctxt, xmlXPathNewNodeSet(NULL)); | |
| 157 | |
| 158 if (fragment != NULL) | |
| 159 xmlFree(fragment); | |
| 160 | |
| 161 return; | |
| 162 } | |
| 163 } else | |
| 164 doc = idoc->doc; | |
| 165 | |
| 166 if (fragment == NULL) { | |
| 167 valuePush(ctxt, xmlXPathNewNodeSet((xmlNodePtr) doc)); | |
| 168 return; | |
| 169 } | |
| 170 | |
| 171 /* use XPointer of HTML location for fragment ID */ | |
| 172 #ifdef LIBXML_XPTR_ENABLED | |
| 173 xptrctxt = xmlXPtrNewContext(doc, NULL, NULL); | |
| 174 if (xptrctxt == NULL) { | |
| 175 xsltTransformError(tctxt, NULL, NULL, | |
| 176 "document() : internal error xptrctxt == NULL\n"); | |
| 177 goto out_fragment; | |
| 178 } | |
| 179 | |
| 180 resObj = xmlXPtrEval(fragment, xptrctxt); | |
| 181 xmlXPathFreeContext(xptrctxt); | |
| 182 #endif | |
| 183 | |
| 184 if (resObj == NULL) | |
| 185 goto out_fragment; | |
| 186 | |
| 187 switch (resObj->type) { | |
| 188 case XPATH_NODESET: | |
| 189 break; | |
| 190 case XPATH_UNDEFINED: | |
| 191 case XPATH_BOOLEAN: | |
| 192 case XPATH_NUMBER: | |
| 193 case XPATH_STRING: | |
| 194 case XPATH_POINT: | |
| 195 case XPATH_USERS: | |
| 196 case XPATH_XSLT_TREE: | |
| 197 case XPATH_RANGE: | |
| 198 case XPATH_LOCATIONSET: | |
| 199 xsltTransformError(tctxt, NULL, NULL, | |
| 200 "document() : XPointer does not select a node set: #%s\n", | |
| 201 fragment); | |
| 202 goto out_object; | |
| 203 } | |
| 204 | |
| 205 valuePush(ctxt, resObj); | |
| 206 xmlFree(fragment); | |
| 207 return; | |
| 208 | |
| 209 out_object: | |
| 210 xmlXPathFreeObject(resObj); | |
| 211 | |
| 212 out_fragment: | |
| 213 valuePush(ctxt, xmlXPathNewNodeSet(NULL)); | |
| 214 xmlFree(fragment); | |
| 215 } | |
| 216 | |
| 217 /** | |
| 218 * xsltDocumentFunction: | |
| 219 * @ctxt: the XPath Parser context | |
| 220 * @nargs: the number of arguments | |
| 221 * | |
| 222 * Implement the document() XSLT function | |
| 223 * node-set document(object, node-set?) | |
| 224 */ | |
| 225 void | |
| 226 xsltDocumentFunction(xmlXPathParserContextPtr ctxt, int nargs) | |
| 227 { | |
| 228 xmlXPathObjectPtr obj, obj2 = NULL; | |
| 229 xmlChar *base = NULL, *URI; | |
| 230 | |
| 231 | |
| 232 if ((nargs < 1) || (nargs > 2)) { | |
| 233 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 234 "document() : invalid number of args %d\n", | |
| 235 nargs); | |
| 236 ctxt->error = XPATH_INVALID_ARITY; | |
| 237 return; | |
| 238 } | |
| 239 if (ctxt->value == NULL) { | |
| 240 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 241 "document() : invalid arg value\n"); | |
| 242 ctxt->error = XPATH_INVALID_TYPE; | |
| 243 return; | |
| 244 } | |
| 245 | |
| 246 if (nargs == 2) { | |
| 247 if (ctxt->value->type != XPATH_NODESET) { | |
| 248 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 249 "document() : invalid arg expecting a nodeset\n"); | |
| 250 ctxt->error = XPATH_INVALID_TYPE; | |
| 251 return; | |
| 252 } | |
| 253 | |
| 254 obj2 = valuePop(ctxt); | |
| 255 } | |
| 256 | |
| 257 if (ctxt->value->type == XPATH_NODESET) { | |
| 258 int i; | |
| 259 xmlXPathObjectPtr newobj, ret; | |
| 260 | |
| 261 obj = valuePop(ctxt); | |
| 262 ret = xmlXPathNewNodeSet(NULL); | |
| 263 | |
| 264 if ((obj != NULL) && obj->nodesetval) { | |
| 265 for (i = 0; i < obj->nodesetval->nodeNr; i++) { | |
| 266 valuePush(ctxt, | |
| 267 xmlXPathNewNodeSet(obj->nodesetval->nodeTab[i])); | |
| 268 xmlXPathStringFunction(ctxt, 1); | |
| 269 if (nargs == 2) { | |
| 270 valuePush(ctxt, xmlXPathObjectCopy(obj2)); | |
| 271 } else { | |
| 272 valuePush(ctxt, | |
| 273 xmlXPathNewNodeSet(obj->nodesetval-> | |
| 274 nodeTab[i])); | |
| 275 } | |
| 276 xsltDocumentFunction(ctxt, 2); | |
| 277 newobj = valuePop(ctxt); | |
| 278 ret->nodesetval = xmlXPathNodeSetMerge(ret->nodesetval, | |
| 279 newobj->nodesetval); | |
| 280 xmlXPathFreeObject(newobj); | |
| 281 } | |
| 282 } | |
| 283 | |
| 284 if (obj != NULL) | |
| 285 xmlXPathFreeObject(obj); | |
| 286 if (obj2 != NULL) | |
| 287 xmlXPathFreeObject(obj2); | |
| 288 valuePush(ctxt, ret); | |
| 289 return; | |
| 290 } | |
| 291 /* | |
| 292 * Make sure it's converted to a string | |
| 293 */ | |
| 294 xmlXPathStringFunction(ctxt, 1); | |
| 295 if (ctxt->value->type != XPATH_STRING) { | |
| 296 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 297 "document() : invalid arg expecting a string\n"); | |
| 298 ctxt->error = XPATH_INVALID_TYPE; | |
| 299 if (obj2 != NULL) | |
| 300 xmlXPathFreeObject(obj2); | |
| 301 return; | |
| 302 } | |
| 303 obj = valuePop(ctxt); | |
| 304 if (obj->stringval == NULL) { | |
| 305 valuePush(ctxt, xmlXPathNewNodeSet(NULL)); | |
| 306 } else { | |
| 307 xsltTransformContextPtr tctxt; | |
| 308 tctxt = xsltXPathGetTransformContext(ctxt); | |
| 309 if ((obj2 != NULL) && (obj2->nodesetval != NULL) && | |
| 310 (obj2->nodesetval->nodeNr > 0) && | |
| 311 IS_XSLT_REAL_NODE(obj2->nodesetval->nodeTab[0])) { | |
| 312 xmlNodePtr target; | |
| 313 | |
| 314 target = obj2->nodesetval->nodeTab[0]; | |
| 315 if ((target->type == XML_ATTRIBUTE_NODE) || | |
| 316 (target->type == XML_PI_NODE)) { | |
| 317 target = ((xmlAttrPtr) target)->parent; | |
| 318 } | |
| 319 base = xmlNodeGetBase(target->doc, target); | |
| 320 } else { | |
| 321 if ((tctxt != NULL) && (tctxt->inst != NULL)) { | |
| 322 base = xmlNodeGetBase(tctxt->inst->doc, tctxt->inst); | |
| 323 } else if ((tctxt != NULL) && (tctxt->style != NULL) && | |
| 324 (tctxt->style->doc != NULL)) { | |
| 325 base = xmlNodeGetBase(tctxt->style->doc, | |
| 326 (xmlNodePtr) tctxt->style->doc); | |
| 327 } | |
| 328 } | |
| 329 URI = xmlBuildURI(obj->stringval, base); | |
| 330 if (base != NULL) | |
| 331 xmlFree(base); | |
| 332 if (URI == NULL) { | |
| 333 if ((tctxt != NULL) && (tctxt->style != NULL) && | |
| 334 (tctxt->style->doc != NULL) && | |
| 335 (xmlStrEqual(URI, tctxt->style->doc->URL))) { | |
| 336 /* This selects the stylesheet's doc itself. */ | |
| 337 valuePush(ctxt, xmlXPathNewNodeSet((xmlNodePtr) tctxt->style->do
c)); | |
| 338 } else { | |
| 339 valuePush(ctxt, xmlXPathNewNodeSet(NULL)); | |
| 340 } | |
| 341 } else { | |
| 342 xsltDocumentFunctionLoadDocument( ctxt, URI ); | |
| 343 xmlFree(URI); | |
| 344 } | |
| 345 } | |
| 346 xmlXPathFreeObject(obj); | |
| 347 if (obj2 != NULL) | |
| 348 xmlXPathFreeObject(obj2); | |
| 349 } | |
| 350 | |
| 351 /** | |
| 352 * xsltKeyFunction: | |
| 353 * @ctxt: the XPath Parser context | |
| 354 * @nargs: the number of arguments | |
| 355 * | |
| 356 * Implement the key() XSLT function | |
| 357 * node-set key(string, object) | |
| 358 */ | |
| 359 void | |
| 360 xsltKeyFunction(xmlXPathParserContextPtr ctxt, int nargs){ | |
| 361 xmlXPathObjectPtr obj1, obj2; | |
| 362 | |
| 363 if (nargs != 2) { | |
| 364 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 365 "key() : expects two arguments\n"); | |
| 366 ctxt->error = XPATH_INVALID_ARITY; | |
| 367 return; | |
| 368 } | |
| 369 | |
| 370 /* | |
| 371 * Get the key's value. | |
| 372 */ | |
| 373 obj2 = valuePop(ctxt); | |
| 374 xmlXPathStringFunction(ctxt, 1); | |
| 375 if ((obj2 == NULL) || | |
| 376 (ctxt->value == NULL) || (ctxt->value->type != XPATH_STRING)) { | |
| 377 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 378 "key() : invalid arg expecting a string\n"); | |
| 379 ctxt->error = XPATH_INVALID_TYPE; | |
| 380 xmlXPathFreeObject(obj2); | |
| 381 | |
| 382 return; | |
| 383 } | |
| 384 /* | |
| 385 * Get the key's name. | |
| 386 */ | |
| 387 obj1 = valuePop(ctxt); | |
| 388 | |
| 389 if ((obj2->type == XPATH_NODESET) || (obj2->type == XPATH_XSLT_TREE)) { | |
| 390 int i; | |
| 391 xmlXPathObjectPtr newobj, ret; | |
| 392 | |
| 393 ret = xmlXPathNewNodeSet(NULL); | |
| 394 | |
| 395 if (obj2->nodesetval != NULL) { | |
| 396 for (i = 0; i < obj2->nodesetval->nodeNr; i++) { | |
| 397 valuePush(ctxt, xmlXPathObjectCopy(obj1)); | |
| 398 valuePush(ctxt, | |
| 399 xmlXPathNewNodeSet(obj2->nodesetval->nodeTab[i])); | |
| 400 xmlXPathStringFunction(ctxt, 1); | |
| 401 xsltKeyFunction(ctxt, 2); | |
| 402 newobj = valuePop(ctxt); | |
| 403 ret->nodesetval = xmlXPathNodeSetMerge(ret->nodesetval, | |
| 404 newobj->nodesetval); | |
| 405 xmlXPathFreeObject(newobj); | |
| 406 } | |
| 407 } | |
| 408 valuePush(ctxt, ret); | |
| 409 } else { | |
| 410 xmlNodeSetPtr nodelist = NULL; | |
| 411 xmlChar *key = NULL, *value; | |
| 412 const xmlChar *keyURI; | |
| 413 xsltTransformContextPtr tctxt; | |
| 414 xmlChar *qname, *prefix; | |
| 415 xmlXPathContextPtr xpctxt = ctxt->context; | |
| 416 xmlNodePtr tmpNode = NULL; | |
| 417 xsltDocumentPtr oldDocInfo; | |
| 418 | |
| 419 tctxt = xsltXPathGetTransformContext(ctxt); | |
| 420 | |
| 421 oldDocInfo = tctxt->document; | |
| 422 | |
| 423 if (xpctxt->node == NULL) { | |
| 424 xsltTransformError(tctxt, NULL, tctxt->inst, | |
| 425 "Internal error in xsltKeyFunction(): " | |
| 426 "The context node is not set on the XPath context.\n"); | |
| 427 tctxt->state = XSLT_STATE_STOPPED; | |
| 428 goto error; | |
| 429 } | |
| 430 /* | |
| 431 * Get the associated namespace URI if qualified name | |
| 432 */ | |
| 433 qname = obj1->stringval; | |
| 434 key = xmlSplitQName2(qname, &prefix); | |
| 435 if (key == NULL) { | |
| 436 key = xmlStrdup(obj1->stringval); | |
| 437 keyURI = NULL; | |
| 438 if (prefix != NULL) | |
| 439 xmlFree(prefix); | |
| 440 } else { | |
| 441 if (prefix != NULL) { | |
| 442 keyURI = xmlXPathNsLookup(xpctxt, prefix); | |
| 443 if (keyURI == NULL) { | |
| 444 xsltTransformError(tctxt, NULL, tctxt->inst, | |
| 445 "key() : prefix %s is not bound\n", prefix); | |
| 446 /* | |
| 447 * TODO: Shouldn't we stop here? | |
| 448 */ | |
| 449 } | |
| 450 xmlFree(prefix); | |
| 451 } else { | |
| 452 keyURI = NULL; | |
| 453 } | |
| 454 } | |
| 455 | |
| 456 /* | |
| 457 * Force conversion of first arg to string | |
| 458 */ | |
| 459 valuePush(ctxt, obj2); | |
| 460 xmlXPathStringFunction(ctxt, 1); | |
| 461 if ((ctxt->value == NULL) || (ctxt->value->type != XPATH_STRING)) { | |
| 462 xsltTransformError(tctxt, NULL, tctxt->inst, | |
| 463 "key() : invalid arg expecting a string\n"); | |
| 464 ctxt->error = XPATH_INVALID_TYPE; | |
| 465 goto error; | |
| 466 } | |
| 467 obj2 = valuePop(ctxt); | |
| 468 value = obj2->stringval; | |
| 469 | |
| 470 /* | |
| 471 * We need to ensure that ctxt->document is available for | |
| 472 * xsltGetKey(). | |
| 473 * First find the relevant doc, which is the context node's | |
| 474 * owner doc; using context->doc is not safe, since | |
| 475 * the doc could have been acquired via the document() function, | |
| 476 * or the doc might be a Result Tree Fragment. | |
| 477 * FUTURE INFO: In XSLT 2.0 the key() function takes an additional | |
| 478 * argument indicating the doc to use. | |
| 479 */ | |
| 480 if (xpctxt->node->type == XML_NAMESPACE_DECL) { | |
| 481 /* | |
| 482 * REVISIT: This is a libxml hack! Check xpath.c for details. | |
| 483 * The XPath module sets the owner element of a ns-node on | |
| 484 * the ns->next field. | |
| 485 */ | |
| 486 if ((((xmlNsPtr) xpctxt->node)->next != NULL) && | |
| 487 (((xmlNsPtr) xpctxt->node)->next->type == XML_ELEMENT_NODE)) | |
| 488 { | |
| 489 tmpNode = (xmlNodePtr) ((xmlNsPtr) xpctxt->node)->next; | |
| 490 } | |
| 491 } else | |
| 492 tmpNode = xpctxt->node; | |
| 493 | |
| 494 if ((tmpNode == NULL) || (tmpNode->doc == NULL)) { | |
| 495 xsltTransformError(tctxt, NULL, tctxt->inst, | |
| 496 "Internal error in xsltKeyFunction(): " | |
| 497 "Couldn't get the doc of the XPath context node.\n"); | |
| 498 goto error; | |
| 499 } | |
| 500 | |
| 501 if ((tctxt->document == NULL) || | |
| 502 (tctxt->document->doc != tmpNode->doc)) | |
| 503 { | |
| 504 if (tmpNode->doc->name && (tmpNode->doc->name[0] == ' ')) { | |
| 505 /* | |
| 506 * This is a Result Tree Fragment. | |
| 507 */ | |
| 508 if (tmpNode->doc->_private == NULL) { | |
| 509 tmpNode->doc->_private = xsltNewDocument(tctxt, tmpNode->doc
); | |
| 510 if (tmpNode->doc->_private == NULL) | |
| 511 goto error; | |
| 512 } | |
| 513 tctxt->document = (xsltDocumentPtr) tmpNode->doc->_private; | |
| 514 } else { | |
| 515 /* | |
| 516 * May be the initial source doc or a doc acquired via the | |
| 517 * document() function. | |
| 518 */ | |
| 519 tctxt->document = xsltFindDocument(tctxt, tmpNode->doc); | |
| 520 } | |
| 521 if (tctxt->document == NULL) { | |
| 522 xsltTransformError(tctxt, NULL, tctxt->inst, | |
| 523 "Internal error in xsltKeyFunction(): " | |
| 524 "Could not get the document info of a context doc.\n"); | |
| 525 tctxt->state = XSLT_STATE_STOPPED; | |
| 526 goto error; | |
| 527 } | |
| 528 } | |
| 529 /* | |
| 530 * Get/compute the key value. | |
| 531 */ | |
| 532 nodelist = xsltGetKey(tctxt, key, keyURI, value); | |
| 533 | |
| 534 error: | |
| 535 tctxt->document = oldDocInfo; | |
| 536 valuePush(ctxt, xmlXPathWrapNodeSet( | |
| 537 xmlXPathNodeSetMerge(NULL, nodelist))); | |
| 538 if (key != NULL) | |
| 539 xmlFree(key); | |
| 540 } | |
| 541 | |
| 542 if (obj1 != NULL) | |
| 543 xmlXPathFreeObject(obj1); | |
| 544 if (obj2 != NULL) | |
| 545 xmlXPathFreeObject(obj2); | |
| 546 } | |
| 547 | |
| 548 /** | |
| 549 * xsltUnparsedEntityURIFunction: | |
| 550 * @ctxt: the XPath Parser context | |
| 551 * @nargs: the number of arguments | |
| 552 * | |
| 553 * Implement the unparsed-entity-uri() XSLT function | |
| 554 * string unparsed-entity-uri(string) | |
| 555 */ | |
| 556 void | |
| 557 xsltUnparsedEntityURIFunction(xmlXPathParserContextPtr ctxt, int nargs){ | |
| 558 xmlXPathObjectPtr obj; | |
| 559 xmlChar *str; | |
| 560 | |
| 561 if ((nargs != 1) || (ctxt->value == NULL)) { | |
| 562 xsltGenericError(xsltGenericErrorContext, | |
| 563 "unparsed-entity-uri() : expects one string arg\n"); | |
| 564 ctxt->error = XPATH_INVALID_ARITY; | |
| 565 return; | |
| 566 } | |
| 567 obj = valuePop(ctxt); | |
| 568 if (obj->type != XPATH_STRING) { | |
| 569 obj = xmlXPathConvertString(obj); | |
| 570 } | |
| 571 | |
| 572 str = obj->stringval; | |
| 573 if (str == NULL) { | |
| 574 valuePush(ctxt, xmlXPathNewString((const xmlChar *)"")); | |
| 575 } else { | |
| 576 xmlEntityPtr entity; | |
| 577 | |
| 578 entity = xmlGetDocEntity(ctxt->context->doc, str); | |
| 579 if (entity == NULL) { | |
| 580 valuePush(ctxt, xmlXPathNewString((const xmlChar *)"")); | |
| 581 } else { | |
| 582 if (entity->URI != NULL) | |
| 583 valuePush(ctxt, xmlXPathNewString(entity->URI)); | |
| 584 else | |
| 585 valuePush(ctxt, xmlXPathNewString((const xmlChar *)"")); | |
| 586 } | |
| 587 } | |
| 588 xmlXPathFreeObject(obj); | |
| 589 } | |
| 590 | |
| 591 /** | |
| 592 * xsltFormatNumberFunction: | |
| 593 * @ctxt: the XPath Parser context | |
| 594 * @nargs: the number of arguments | |
| 595 * | |
| 596 * Implement the format-number() XSLT function | |
| 597 * string format-number(number, string, string?) | |
| 598 */ | |
| 599 void | |
| 600 xsltFormatNumberFunction(xmlXPathParserContextPtr ctxt, int nargs) | |
| 601 { | |
| 602 xmlXPathObjectPtr numberObj = NULL; | |
| 603 xmlXPathObjectPtr formatObj = NULL; | |
| 604 xmlXPathObjectPtr decimalObj = NULL; | |
| 605 xsltStylesheetPtr sheet; | |
| 606 xsltDecimalFormatPtr formatValues = NULL; | |
| 607 xmlChar *result; | |
| 608 const xmlChar *ncname; | |
| 609 const xmlChar *prefix = NULL; | |
| 610 const xmlChar *nsUri = NULL; | |
| 611 xsltTransformContextPtr tctxt; | |
| 612 | |
| 613 tctxt = xsltXPathGetTransformContext(ctxt); | |
| 614 if ((tctxt == NULL) || (tctxt->inst == NULL)) | |
| 615 return; | |
| 616 sheet = tctxt->style; | |
| 617 if (sheet == NULL) | |
| 618 return; | |
| 619 formatValues = sheet->decimalFormat; | |
| 620 | |
| 621 switch (nargs) { | |
| 622 case 3: | |
| 623 CAST_TO_STRING; | |
| 624 decimalObj = valuePop(ctxt); | |
| 625 ncname = xsltSplitQName(sheet->dict, decimalObj->stringval, &prefix); | |
| 626 if (prefix != NULL) { | |
| 627 xmlNsPtr ns = xmlSearchNs(tctxt->inst->doc, tctxt->inst, prefix); | |
| 628 if (ns == NULL) { | |
| 629 xsltTransformError(tctxt, NULL, NULL, | |
| 630 "format-number : No namespace found for QName '%s:%s'\n", | |
| 631 prefix, ncname); | |
| 632 sheet->errors++; | |
| 633 ncname = NULL; | |
| 634 } | |
| 635 nsUri = ns->href; | |
| 636 } | |
| 637 if (ncname != NULL) { | |
| 638 formatValues = xsltDecimalFormatGetByQName(sheet, nsUri, ncname); | |
| 639 } | |
| 640 if (formatValues == NULL) { | |
| 641 xsltTransformError(tctxt, NULL, NULL, | |
| 642 "format-number() : undeclared decimal format '%s'\n", | |
| 643 decimalObj->stringval); | |
| 644 } | |
| 645 /* Intentional fall-through */ | |
| 646 case 2: | |
| 647 CAST_TO_STRING; | |
| 648 formatObj = valuePop(ctxt); | |
| 649 CAST_TO_NUMBER; | |
| 650 numberObj = valuePop(ctxt); | |
| 651 break; | |
| 652 default: | |
| 653 XP_ERROR(XPATH_INVALID_ARITY); | |
| 654 } | |
| 655 | |
| 656 if (formatValues != NULL) { | |
| 657 if (xsltFormatNumberConversion(formatValues, | |
| 658 formatObj->stringval, | |
| 659 numberObj->floatval, | |
| 660 &result) == XPATH_EXPRESSION_OK) { | |
| 661 valuePush(ctxt, xmlXPathNewString(result)); | |
| 662 xmlFree(result); | |
| 663 } | |
| 664 } | |
| 665 | |
| 666 xmlXPathFreeObject(numberObj); | |
| 667 xmlXPathFreeObject(formatObj); | |
| 668 xmlXPathFreeObject(decimalObj); | |
| 669 } | |
| 670 | |
| 671 /** | |
| 672 * xsltGenerateIdFunction: | |
| 673 * @ctxt: the XPath Parser context | |
| 674 * @nargs: the number of arguments | |
| 675 * | |
| 676 * Implement the generate-id() XSLT function | |
| 677 * string generate-id(node-set?) | |
| 678 */ | |
| 679 void | |
| 680 xsltGenerateIdFunction(xmlXPathParserContextPtr ctxt, int nargs){ | |
| 681 static char base_address; | |
| 682 xmlNodePtr cur = NULL; | |
| 683 xmlXPathObjectPtr obj = NULL; | |
| 684 long val; | |
| 685 xmlChar str[30]; | |
| 686 | |
| 687 if (nargs == 0) { | |
| 688 cur = ctxt->context->node; | |
| 689 } else if (nargs == 1) { | |
| 690 xmlNodeSetPtr nodelist; | |
| 691 int i, ret; | |
| 692 | |
| 693 if ((ctxt->value == NULL) || (ctxt->value->type != XPATH_NODESET)) { | |
| 694 ctxt->error = XPATH_INVALID_TYPE; | |
| 695 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 696 "generate-id() : invalid arg expecting a node-set\n"); | |
| 697 return; | |
| 698 } | |
| 699 obj = valuePop(ctxt); | |
| 700 nodelist = obj->nodesetval; | |
| 701 if ((nodelist == NULL) || (nodelist->nodeNr <= 0)) { | |
| 702 xmlXPathFreeObject(obj); | |
| 703 valuePush(ctxt, xmlXPathNewCString("")); | |
| 704 return; | |
| 705 } | |
| 706 cur = nodelist->nodeTab[0]; | |
| 707 for (i = 1;i < nodelist->nodeNr;i++) { | |
| 708 ret = xmlXPathCmpNodes(cur, nodelist->nodeTab[i]); | |
| 709 if (ret == -1) | |
| 710 cur = nodelist->nodeTab[i]; | |
| 711 } | |
| 712 } else { | |
| 713 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 714 "generate-id() : invalid number of args %d\n", nargs); | |
| 715 ctxt->error = XPATH_INVALID_ARITY; | |
| 716 return; | |
| 717 } | |
| 718 | |
| 719 if (obj) | |
| 720 xmlXPathFreeObject(obj); | |
| 721 | |
| 722 val = (long)((char *)cur - (char *)&base_address); | |
| 723 if (val >= 0) { | |
| 724 snprintf((char *)str, sizeof(str), "idp%ld", val); | |
| 725 } else { | |
| 726 snprintf((char *)str, sizeof(str), "idm%ld", -val); | |
| 727 } | |
| 728 valuePush(ctxt, xmlXPathNewString(str)); | |
| 729 } | |
| 730 | |
| 731 /** | |
| 732 * xsltSystemPropertyFunction: | |
| 733 * @ctxt: the XPath Parser context | |
| 734 * @nargs: the number of arguments | |
| 735 * | |
| 736 * Implement the system-property() XSLT function | |
| 737 * object system-property(string) | |
| 738 */ | |
| 739 void | |
| 740 xsltSystemPropertyFunction(xmlXPathParserContextPtr ctxt, int nargs){ | |
| 741 xmlXPathObjectPtr obj; | |
| 742 xmlChar *prefix, *name; | |
| 743 const xmlChar *nsURI = NULL; | |
| 744 | |
| 745 if (nargs != 1) { | |
| 746 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 747 "system-property() : expects one string arg\n"); | |
| 748 ctxt->error = XPATH_INVALID_ARITY; | |
| 749 return; | |
| 750 } | |
| 751 if ((ctxt->value == NULL) || (ctxt->value->type != XPATH_STRING)) { | |
| 752 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 753 "system-property() : invalid arg expecting a string\n"); | |
| 754 ctxt->error = XPATH_INVALID_TYPE; | |
| 755 return; | |
| 756 } | |
| 757 obj = valuePop(ctxt); | |
| 758 if (obj->stringval == NULL) { | |
| 759 valuePush(ctxt, xmlXPathNewString((const xmlChar *)"")); | |
| 760 } else { | |
| 761 name = xmlSplitQName2(obj->stringval, &prefix); | |
| 762 if (name == NULL) { | |
| 763 name = xmlStrdup(obj->stringval); | |
| 764 } else { | |
| 765 nsURI = xmlXPathNsLookup(ctxt->context, prefix); | |
| 766 if (nsURI == NULL) { | |
| 767 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NUL
L, | |
| 768 "system-property() : prefix %s is not bound\n", prefix); | |
| 769 } | |
| 770 } | |
| 771 | |
| 772 if (xmlStrEqual(nsURI, XSLT_NAMESPACE)) { | |
| 773 #ifdef DOCBOOK_XSL_HACK | |
| 774 if (xmlStrEqual(name, (const xmlChar *)"vendor")) { | |
| 775 xsltStylesheetPtr sheet; | |
| 776 xsltTransformContextPtr tctxt; | |
| 777 | |
| 778 tctxt = xsltXPathGetTransformContext(ctxt); | |
| 779 if ((tctxt != NULL) && (tctxt->inst != NULL) && | |
| 780 (xmlStrEqual(tctxt->inst->name, BAD_CAST "variable")) && | |
| 781 (tctxt->inst->parent != NULL) && | |
| 782 (xmlStrEqual(tctxt->inst->parent->name, | |
| 783 BAD_CAST "template"))) | |
| 784 sheet = tctxt->style; | |
| 785 else | |
| 786 sheet = NULL; | |
| 787 if ((sheet != NULL) && (sheet->doc != NULL) && | |
| 788 (sheet->doc->URL != NULL) && | |
| 789 (xmlStrstr(sheet->doc->URL, | |
| 790 (const xmlChar *)"chunk") != NULL)) { | |
| 791 valuePush(ctxt, xmlXPathNewString( | |
| 792 (const xmlChar *)"libxslt (SAXON 6.2 compatible)")); | |
| 793 | |
| 794 } else { | |
| 795 valuePush(ctxt, xmlXPathNewString( | |
| 796 (const xmlChar *)XSLT_DEFAULT_VENDOR)); | |
| 797 } | |
| 798 } else | |
| 799 #else | |
| 800 if (xmlStrEqual(name, (const xmlChar *)"vendor")) { | |
| 801 valuePush(ctxt, xmlXPathNewString( | |
| 802 (const xmlChar *)XSLT_DEFAULT_VENDOR)); | |
| 803 } else | |
| 804 #endif | |
| 805 if (xmlStrEqual(name, (const xmlChar *)"version")) { | |
| 806 valuePush(ctxt, xmlXPathNewString( | |
| 807 (const xmlChar *)XSLT_DEFAULT_VERSION)); | |
| 808 } else if (xmlStrEqual(name, (const xmlChar *)"vendor-url")) { | |
| 809 valuePush(ctxt, xmlXPathNewString( | |
| 810 (const xmlChar *)XSLT_DEFAULT_URL)); | |
| 811 } else { | |
| 812 valuePush(ctxt, xmlXPathNewString((const xmlChar *)"")); | |
| 813 } | |
| 814 } else { | |
| 815 valuePush(ctxt, xmlXPathNewString((const xmlChar *)"")); | |
| 816 } | |
| 817 if (name != NULL) | |
| 818 xmlFree(name); | |
| 819 if (prefix != NULL) | |
| 820 xmlFree(prefix); | |
| 821 } | |
| 822 xmlXPathFreeObject(obj); | |
| 823 } | |
| 824 | |
| 825 /** | |
| 826 * xsltElementAvailableFunction: | |
| 827 * @ctxt: the XPath Parser context | |
| 828 * @nargs: the number of arguments | |
| 829 * | |
| 830 * Implement the element-available() XSLT function | |
| 831 * boolean element-available(string) | |
| 832 */ | |
| 833 void | |
| 834 xsltElementAvailableFunction(xmlXPathParserContextPtr ctxt, int nargs){ | |
| 835 xmlXPathObjectPtr obj; | |
| 836 xmlChar *prefix, *name; | |
| 837 const xmlChar *nsURI = NULL; | |
| 838 xsltTransformContextPtr tctxt; | |
| 839 | |
| 840 if (nargs != 1) { | |
| 841 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 842 "element-available() : expects one string arg\n"); | |
| 843 ctxt->error = XPATH_INVALID_ARITY; | |
| 844 return; | |
| 845 } | |
| 846 xmlXPathStringFunction(ctxt, 1); | |
| 847 if ((ctxt->value == NULL) || (ctxt->value->type != XPATH_STRING)) { | |
| 848 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 849 "element-available() : invalid arg expecting a string\n"); | |
| 850 ctxt->error = XPATH_INVALID_TYPE; | |
| 851 return; | |
| 852 } | |
| 853 obj = valuePop(ctxt); | |
| 854 tctxt = xsltXPathGetTransformContext(ctxt); | |
| 855 if ((tctxt == NULL) || (tctxt->inst == NULL)) { | |
| 856 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 857 "element-available() : internal error tctxt == NULL\n"); | |
| 858 xmlXPathFreeObject(obj); | |
| 859 valuePush(ctxt, xmlXPathNewBoolean(0)); | |
| 860 return; | |
| 861 } | |
| 862 | |
| 863 | |
| 864 name = xmlSplitQName2(obj->stringval, &prefix); | |
| 865 if (name == NULL) { | |
| 866 xmlNsPtr ns; | |
| 867 | |
| 868 name = xmlStrdup(obj->stringval); | |
| 869 ns = xmlSearchNs(tctxt->inst->doc, tctxt->inst, NULL); | |
| 870 if (ns != NULL) nsURI = ns->href; | |
| 871 } else { | |
| 872 nsURI = xmlXPathNsLookup(ctxt->context, prefix); | |
| 873 if (nsURI == NULL) { | |
| 874 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 875 "element-available() : prefix %s is not bound\n", prefix); | |
| 876 } | |
| 877 } | |
| 878 | |
| 879 if (xsltExtElementLookup(tctxt, name, nsURI) != NULL) { | |
| 880 valuePush(ctxt, xmlXPathNewBoolean(1)); | |
| 881 } else { | |
| 882 valuePush(ctxt, xmlXPathNewBoolean(0)); | |
| 883 } | |
| 884 | |
| 885 xmlXPathFreeObject(obj); | |
| 886 if (name != NULL) | |
| 887 xmlFree(name); | |
| 888 if (prefix != NULL) | |
| 889 xmlFree(prefix); | |
| 890 } | |
| 891 | |
| 892 /** | |
| 893 * xsltFunctionAvailableFunction: | |
| 894 * @ctxt: the XPath Parser context | |
| 895 * @nargs: the number of arguments | |
| 896 * | |
| 897 * Implement the function-available() XSLT function | |
| 898 * boolean function-available(string) | |
| 899 */ | |
| 900 void | |
| 901 xsltFunctionAvailableFunction(xmlXPathParserContextPtr ctxt, int nargs){ | |
| 902 xmlXPathObjectPtr obj; | |
| 903 xmlChar *prefix, *name; | |
| 904 const xmlChar *nsURI = NULL; | |
| 905 | |
| 906 if (nargs != 1) { | |
| 907 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 908 "function-available() : expects one string arg\n"); | |
| 909 ctxt->error = XPATH_INVALID_ARITY; | |
| 910 return; | |
| 911 } | |
| 912 xmlXPathStringFunction(ctxt, 1); | |
| 913 if ((ctxt->value == NULL) || (ctxt->value->type != XPATH_STRING)) { | |
| 914 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 915 "function-available() : invalid arg expecting a string\n"); | |
| 916 ctxt->error = XPATH_INVALID_TYPE; | |
| 917 return; | |
| 918 } | |
| 919 obj = valuePop(ctxt); | |
| 920 | |
| 921 name = xmlSplitQName2(obj->stringval, &prefix); | |
| 922 if (name == NULL) { | |
| 923 name = xmlStrdup(obj->stringval); | |
| 924 } else { | |
| 925 nsURI = xmlXPathNsLookup(ctxt->context, prefix); | |
| 926 if (nsURI == NULL) { | |
| 927 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 928 "function-available() : prefix %s is not bound\n", prefix); | |
| 929 } | |
| 930 } | |
| 931 | |
| 932 if (xmlXPathFunctionLookupNS(ctxt->context, name, nsURI) != NULL) { | |
| 933 valuePush(ctxt, xmlXPathNewBoolean(1)); | |
| 934 } else { | |
| 935 valuePush(ctxt, xmlXPathNewBoolean(0)); | |
| 936 } | |
| 937 | |
| 938 xmlXPathFreeObject(obj); | |
| 939 if (name != NULL) | |
| 940 xmlFree(name); | |
| 941 if (prefix != NULL) | |
| 942 xmlFree(prefix); | |
| 943 } | |
| 944 | |
| 945 /** | |
| 946 * xsltCurrentFunction: | |
| 947 * @ctxt: the XPath Parser context | |
| 948 * @nargs: the number of arguments | |
| 949 * | |
| 950 * Implement the current() XSLT function | |
| 951 * node-set current() | |
| 952 */ | |
| 953 static void | |
| 954 xsltCurrentFunction(xmlXPathParserContextPtr ctxt, int nargs){ | |
| 955 xsltTransformContextPtr tctxt; | |
| 956 | |
| 957 if (nargs != 0) { | |
| 958 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 959 "current() : function uses no argument\n"); | |
| 960 ctxt->error = XPATH_INVALID_ARITY; | |
| 961 return; | |
| 962 } | |
| 963 tctxt = xsltXPathGetTransformContext(ctxt); | |
| 964 if (tctxt == NULL) { | |
| 965 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 966 "current() : internal error tctxt == NULL\n"); | |
| 967 valuePush(ctxt, xmlXPathNewNodeSet(NULL)); | |
| 968 } else { | |
| 969 valuePush(ctxt, xmlXPathNewNodeSet(tctxt->node)); /* current */ | |
| 970 } | |
| 971 } | |
| 972 | |
| 973 /************************************************************************ | |
| 974 * * | |
| 975 * Registration of XSLT and libxslt functions * | |
| 976 * * | |
| 977 ************************************************************************/ | |
| 978 | |
| 979 /** | |
| 980 * xsltRegisterAllFunctions: | |
| 981 * @ctxt: the XPath context | |
| 982 * | |
| 983 * Registers all default XSLT functions in this context | |
| 984 */ | |
| 985 void | |
| 986 xsltRegisterAllFunctions(xmlXPathContextPtr ctxt) | |
| 987 { | |
| 988 xmlXPathRegisterFunc(ctxt, (const xmlChar *) "current", | |
| 989 xsltCurrentFunction); | |
| 990 xmlXPathRegisterFunc(ctxt, (const xmlChar *) "document", | |
| 991 xsltDocumentFunction); | |
| 992 xmlXPathRegisterFunc(ctxt, (const xmlChar *) "key", xsltKeyFunction); | |
| 993 xmlXPathRegisterFunc(ctxt, (const xmlChar *) "unparsed-entity-uri", | |
| 994 xsltUnparsedEntityURIFunction); | |
| 995 xmlXPathRegisterFunc(ctxt, (const xmlChar *) "format-number", | |
| 996 xsltFormatNumberFunction); | |
| 997 xmlXPathRegisterFunc(ctxt, (const xmlChar *) "generate-id", | |
| 998 xsltGenerateIdFunction); | |
| 999 xmlXPathRegisterFunc(ctxt, (const xmlChar *) "system-property", | |
| 1000 xsltSystemPropertyFunction); | |
| 1001 xmlXPathRegisterFunc(ctxt, (const xmlChar *) "element-available", | |
| 1002 xsltElementAvailableFunction); | |
| 1003 xmlXPathRegisterFunc(ctxt, (const xmlChar *) "function-available", | |
| 1004 xsltFunctionAvailableFunction); | |
| 1005 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2865973002:
Check in the libxslt roll script. (Closed)
