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| 1 /* | |
| 2 * extensions.c: Implemetation of the extensions support | |
| 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 */ | |
| 11 | |
| 12 #define IN_LIBXSLT | |
| 13 #include "libxslt.h" | |
| 14 | |
| 15 #include <string.h> | |
| 16 #include <limits.h> | |
| 17 | |
| 18 #include <libxml/xmlmemory.h> | |
| 19 #include <libxml/tree.h> | |
| 20 #include <libxml/hash.h> | |
| 21 #include <libxml/xmlerror.h> | |
| 22 #include <libxml/parserInternals.h> | |
| 23 #include <libxml/xpathInternals.h> | |
| 24 #ifdef WITH_MODULES | |
| 25 #include <libxml/xmlmodule.h> | |
| 26 #endif | |
| 27 #include <libxml/list.h> | |
| 28 #include <libxml/xmlIO.h> | |
| 29 #include "xslt.h" | |
| 30 #include "xsltInternals.h" | |
| 31 #include "xsltutils.h" | |
| 32 #include "imports.h" | |
| 33 #include "extensions.h" | |
| 34 | |
| 35 #ifdef _WIN32 | |
| 36 #include <stdlib.h> /* for _MAX_PATH */ | |
| 37 #ifndef PATH_MAX | |
| 38 #define PATH_MAX _MAX_PATH | |
| 39 #endif | |
| 40 #endif | |
| 41 | |
| 42 #ifdef WITH_XSLT_DEBUG | |
| 43 #define WITH_XSLT_DEBUG_EXTENSIONS | |
| 44 #endif | |
| 45 | |
| 46 /************************************************************************ | |
| 47 * * | |
| 48 * Private Types and Globals * | |
| 49 * * | |
| 50 ************************************************************************/ | |
| 51 | |
| 52 typedef struct _xsltExtDef xsltExtDef; | |
| 53 typedef xsltExtDef *xsltExtDefPtr; | |
| 54 struct _xsltExtDef { | |
| 55 struct _xsltExtDef *next; | |
| 56 xmlChar *prefix; | |
| 57 xmlChar *URI; | |
| 58 void *data; | |
| 59 }; | |
| 60 | |
| 61 typedef struct _xsltExtModule xsltExtModule; | |
| 62 typedef xsltExtModule *xsltExtModulePtr; | |
| 63 struct _xsltExtModule { | |
| 64 xsltExtInitFunction initFunc; | |
| 65 xsltExtShutdownFunction shutdownFunc; | |
| 66 xsltStyleExtInitFunction styleInitFunc; | |
| 67 xsltStyleExtShutdownFunction styleShutdownFunc; | |
| 68 }; | |
| 69 | |
| 70 typedef struct _xsltExtData xsltExtData; | |
| 71 typedef xsltExtData *xsltExtDataPtr; | |
| 72 struct _xsltExtData { | |
| 73 xsltExtModulePtr extModule; | |
| 74 void *extData; | |
| 75 }; | |
| 76 | |
| 77 typedef struct _xsltExtElement xsltExtElement; | |
| 78 typedef xsltExtElement *xsltExtElementPtr; | |
| 79 struct _xsltExtElement { | |
| 80 xsltPreComputeFunction precomp; | |
| 81 xsltTransformFunction transform; | |
| 82 }; | |
| 83 | |
| 84 static xmlHashTablePtr xsltExtensionsHash = NULL; | |
| 85 static xmlHashTablePtr xsltFunctionsHash = NULL; | |
| 86 static xmlHashTablePtr xsltElementsHash = NULL; | |
| 87 static xmlHashTablePtr xsltTopLevelsHash = NULL; | |
| 88 static xmlHashTablePtr xsltModuleHash = NULL; | |
| 89 static xmlMutexPtr xsltExtMutex = NULL; | |
| 90 | |
| 91 /************************************************************************ | |
| 92 * * | |
| 93 * Type functions * | |
| 94 * * | |
| 95 ************************************************************************/ | |
| 96 | |
| 97 /** | |
| 98 * xsltNewExtDef: | |
| 99 * @prefix: the extension prefix | |
| 100 * @URI: the namespace URI | |
| 101 * | |
| 102 * Create a new XSLT ExtDef | |
| 103 * | |
| 104 * Returns the newly allocated xsltExtDefPtr or NULL in case of error | |
| 105 */ | |
| 106 static xsltExtDefPtr | |
| 107 xsltNewExtDef(const xmlChar * prefix, const xmlChar * URI) | |
| 108 { | |
| 109 xsltExtDefPtr cur; | |
| 110 | |
| 111 cur = (xsltExtDefPtr) xmlMalloc(sizeof(xsltExtDef)); | |
| 112 if (cur == NULL) { | |
| 113 xsltTransformError(NULL, NULL, NULL, | |
| 114 "xsltNewExtDef : malloc failed\n"); | |
| 115 return (NULL); | |
| 116 } | |
| 117 memset(cur, 0, sizeof(xsltExtDef)); | |
| 118 if (prefix != NULL) | |
| 119 cur->prefix = xmlStrdup(prefix); | |
| 120 if (URI != NULL) | |
| 121 cur->URI = xmlStrdup(URI); | |
| 122 return (cur); | |
| 123 } | |
| 124 | |
| 125 /** | |
| 126 * xsltFreeExtDef: | |
| 127 * @extensiond: an XSLT extension definition | |
| 128 * | |
| 129 * Free up the memory allocated by @extensiond | |
| 130 */ | |
| 131 static void | |
| 132 xsltFreeExtDef(xsltExtDefPtr extensiond) | |
| 133 { | |
| 134 if (extensiond == NULL) | |
| 135 return; | |
| 136 if (extensiond->prefix != NULL) | |
| 137 xmlFree(extensiond->prefix); | |
| 138 if (extensiond->URI != NULL) | |
| 139 xmlFree(extensiond->URI); | |
| 140 xmlFree(extensiond); | |
| 141 } | |
| 142 | |
| 143 /** | |
| 144 * xsltFreeExtDefList: | |
| 145 * @extensiond: an XSLT extension definition list | |
| 146 * | |
| 147 * Free up the memory allocated by all the elements of @extensiond | |
| 148 */ | |
| 149 static void | |
| 150 xsltFreeExtDefList(xsltExtDefPtr extensiond) | |
| 151 { | |
| 152 xsltExtDefPtr cur; | |
| 153 | |
| 154 while (extensiond != NULL) { | |
| 155 cur = extensiond; | |
| 156 extensiond = extensiond->next; | |
| 157 xsltFreeExtDef(cur); | |
| 158 } | |
| 159 } | |
| 160 | |
| 161 /** | |
| 162 * xsltNewExtModule: | |
| 163 * @initFunc: the module initialization function | |
| 164 * @shutdownFunc: the module shutdown function | |
| 165 * @styleInitFunc: the stylesheet module data allocator function | |
| 166 * @styleShutdownFunc: the stylesheet module data free function | |
| 167 * | |
| 168 * Create a new XSLT extension module | |
| 169 * | |
| 170 * Returns the newly allocated xsltExtModulePtr or NULL in case of error | |
| 171 */ | |
| 172 static xsltExtModulePtr | |
| 173 xsltNewExtModule(xsltExtInitFunction initFunc, | |
| 174 xsltExtShutdownFunction shutdownFunc, | |
| 175 xsltStyleExtInitFunction styleInitFunc, | |
| 176 xsltStyleExtShutdownFunction styleShutdownFunc) | |
| 177 { | |
| 178 xsltExtModulePtr cur; | |
| 179 | |
| 180 cur = (xsltExtModulePtr) xmlMalloc(sizeof(xsltExtModule)); | |
| 181 if (cur == NULL) { | |
| 182 xsltTransformError(NULL, NULL, NULL, | |
| 183 "xsltNewExtModule : malloc failed\n"); | |
| 184 return (NULL); | |
| 185 } | |
| 186 cur->initFunc = initFunc; | |
| 187 cur->shutdownFunc = shutdownFunc; | |
| 188 cur->styleInitFunc = styleInitFunc; | |
| 189 cur->styleShutdownFunc = styleShutdownFunc; | |
| 190 return (cur); | |
| 191 } | |
| 192 | |
| 193 /** | |
| 194 * xsltFreeExtModule: | |
| 195 * @ext: an XSLT extension module | |
| 196 * | |
| 197 * Free up the memory allocated by @ext | |
| 198 */ | |
| 199 static void | |
| 200 xsltFreeExtModule(xsltExtModulePtr ext) | |
| 201 { | |
| 202 if (ext == NULL) | |
| 203 return; | |
| 204 xmlFree(ext); | |
| 205 } | |
| 206 | |
| 207 /** | |
| 208 * xsltNewExtData: | |
| 209 * @extModule: the module | |
| 210 * @extData: the associated data | |
| 211 * | |
| 212 * Create a new XSLT extension module data wrapper | |
| 213 * | |
| 214 * Returns the newly allocated xsltExtDataPtr or NULL in case of error | |
| 215 */ | |
| 216 static xsltExtDataPtr | |
| 217 xsltNewExtData(xsltExtModulePtr extModule, void *extData) | |
| 218 { | |
| 219 xsltExtDataPtr cur; | |
| 220 | |
| 221 if (extModule == NULL) | |
| 222 return (NULL); | |
| 223 cur = (xsltExtDataPtr) xmlMalloc(sizeof(xsltExtData)); | |
| 224 if (cur == NULL) { | |
| 225 xsltTransformError(NULL, NULL, NULL, | |
| 226 "xsltNewExtData : malloc failed\n"); | |
| 227 return (NULL); | |
| 228 } | |
| 229 cur->extModule = extModule; | |
| 230 cur->extData = extData; | |
| 231 return (cur); | |
| 232 } | |
| 233 | |
| 234 /** | |
| 235 * xsltFreeExtData: | |
| 236 * @ext: an XSLT extension module data wrapper | |
| 237 * | |
| 238 * Free up the memory allocated by @ext | |
| 239 */ | |
| 240 static void | |
| 241 xsltFreeExtData(xsltExtDataPtr ext) | |
| 242 { | |
| 243 if (ext == NULL) | |
| 244 return; | |
| 245 xmlFree(ext); | |
| 246 } | |
| 247 | |
| 248 /** | |
| 249 * xsltNewExtElement: | |
| 250 * @precomp: the pre-computation function | |
| 251 * @transform: the transformation function | |
| 252 * | |
| 253 * Create a new XSLT extension element | |
| 254 * | |
| 255 * Returns the newly allocated xsltExtElementPtr or NULL in case of | |
| 256 * error | |
| 257 */ | |
| 258 static xsltExtElementPtr | |
| 259 xsltNewExtElement(xsltPreComputeFunction precomp, | |
| 260 xsltTransformFunction transform) | |
| 261 { | |
| 262 xsltExtElementPtr cur; | |
| 263 | |
| 264 if (transform == NULL) | |
| 265 return (NULL); | |
| 266 | |
| 267 cur = (xsltExtElementPtr) xmlMalloc(sizeof(xsltExtElement)); | |
| 268 if (cur == NULL) { | |
| 269 xsltTransformError(NULL, NULL, NULL, | |
| 270 "xsltNewExtElement : malloc failed\n"); | |
| 271 return (NULL); | |
| 272 } | |
| 273 cur->precomp = precomp; | |
| 274 cur->transform = transform; | |
| 275 return (cur); | |
| 276 } | |
| 277 | |
| 278 /** | |
| 279 * xsltFreeExtElement: | |
| 280 * @ext: an XSLT extension element | |
| 281 * | |
| 282 * Frees up the memory allocated by @ext | |
| 283 */ | |
| 284 static void | |
| 285 xsltFreeExtElement(xsltExtElementPtr ext) | |
| 286 { | |
| 287 if (ext == NULL) | |
| 288 return; | |
| 289 xmlFree(ext); | |
| 290 } | |
| 291 | |
| 292 | |
| 293 #ifdef WITH_MODULES | |
| 294 typedef void (*exsltRegisterFunction) (void); | |
| 295 | |
| 296 #ifndef PATH_MAX | |
| 297 #define PATH_MAX 4096 | |
| 298 #endif | |
| 299 | |
| 300 /** | |
| 301 * xsltExtModuleRegisterDynamic: | |
| 302 * @URI: the function or element namespace URI | |
| 303 * | |
| 304 * Dynamically loads an extension plugin when available. | |
| 305 * | |
| 306 * The plugin name is derived from the URI by removing the | |
| 307 * initial protocol designation, e.g. "http://", then converting | |
| 308 * the characters ".", "-", "/", and "\" into "_", the removing | |
| 309 * any trailing "/", then concatenating LIBXML_MODULE_EXTENSION. | |
| 310 * | |
| 311 * Plugins are loaded from the directory specified by the | |
| 312 * environment variable LIBXSLT_PLUGINS_PATH, or if NULL, | |
| 313 * by LIBXSLT_DEFAULT_PLUGINS_PATH() which is determined at | |
| 314 * compile time. | |
| 315 * | |
| 316 * Returns 0 if successful, -1 in case of error. | |
| 317 */ | |
| 318 | |
| 319 static int | |
| 320 xsltExtModuleRegisterDynamic(const xmlChar * URI) | |
| 321 { | |
| 322 | |
| 323 xmlModulePtr m; | |
| 324 exsltRegisterFunction regfunc; | |
| 325 xmlChar *ext_name; | |
| 326 char module_filename[PATH_MAX]; | |
| 327 const xmlChar *ext_directory = NULL; | |
| 328 const xmlChar *protocol = NULL; | |
| 329 xmlChar *i, *regfunc_name; | |
| 330 void *vregfunc; | |
| 331 int rc; | |
| 332 | |
| 333 /* check for bad inputs */ | |
| 334 if (URI == NULL) | |
| 335 return (-1); | |
| 336 | |
| 337 if (NULL == xsltModuleHash) { | |
| 338 xsltModuleHash = xmlHashCreate(5); | |
| 339 if (xsltModuleHash == NULL) | |
| 340 return (-1); | |
| 341 } | |
| 342 | |
| 343 xmlMutexLock(xsltExtMutex); | |
| 344 | |
| 345 /* have we attempted to register this module already? */ | |
| 346 if (xmlHashLookup(xsltModuleHash, URI) != NULL) { | |
| 347 xmlMutexUnlock(xsltExtMutex); | |
| 348 return (-1); | |
| 349 } | |
| 350 xmlMutexUnlock(xsltExtMutex); | |
| 351 | |
| 352 /* transform extension namespace into a module name */ | |
| 353 protocol = xmlStrstr(URI, BAD_CAST "://"); | |
| 354 if (protocol == NULL) { | |
| 355 ext_name = xmlStrdup(URI); | |
| 356 } else { | |
| 357 ext_name = xmlStrdup(protocol + 3); | |
| 358 } | |
| 359 if (ext_name == NULL) { | |
| 360 return (-1); | |
| 361 } | |
| 362 | |
| 363 i = ext_name; | |
| 364 while ('\0' != *i) { | |
| 365 if (('/' == *i) || ('\\' == *i) || ('.' == *i) || ('-' == *i)) | |
| 366 *i = '_'; | |
| 367 i++; | |
| 368 } | |
| 369 | |
| 370 /* Strip underscores from end of string. */ | |
| 371 while (i > ext_name && *(i - 1) == '_') { | |
| 372 i--; | |
| 373 *i = '\0'; | |
| 374 } | |
| 375 | |
| 376 /* determine module directory */ | |
| 377 ext_directory = (xmlChar *) getenv("LIBXSLT_PLUGINS_PATH"); | |
| 378 | |
| 379 if (NULL == ext_directory) { | |
| 380 ext_directory = BAD_CAST LIBXSLT_DEFAULT_PLUGINS_PATH(); | |
| 381 if (NULL == ext_directory) | |
| 382 return (-1); | |
| 383 } | |
| 384 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 385 else | |
| 386 xsltGenericDebug(xsltGenericDebugContext, | |
| 387 "LIBXSLT_PLUGINS_PATH is %s\n", ext_directory); | |
| 388 #endif | |
| 389 | |
| 390 /* build the module filename, and confirm the module exists */ | |
| 391 xmlStrPrintf((xmlChar *) module_filename, sizeof(module_filename), | |
| 392 BAD_CAST "%s/%s%s", | |
| 393 ext_directory, ext_name, LIBXML_MODULE_EXTENSION); | |
| 394 | |
| 395 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 396 xsltGenericDebug(xsltGenericDebugContext, | |
| 397 "Attempting to load plugin: %s for URI: %s\n", | |
| 398 module_filename, URI); | |
| 399 #endif | |
| 400 | |
| 401 if (1 != xmlCheckFilename(module_filename)) { | |
| 402 | |
| 403 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 404 xsltGenericDebug(xsltGenericDebugContext, | |
| 405 "xmlCheckFilename failed for plugin: %s\n", module_filename
); | |
| 406 #endif | |
| 407 | |
| 408 xmlFree(ext_name); | |
| 409 return (-1); | |
| 410 } | |
| 411 | |
| 412 /* attempt to open the module */ | |
| 413 m = xmlModuleOpen(module_filename, 0); | |
| 414 if (NULL == m) { | |
| 415 | |
| 416 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 417 xsltGenericDebug(xsltGenericDebugContext, | |
| 418 "xmlModuleOpen failed for plugin: %s\n", module_filename); | |
| 419 #endif | |
| 420 | |
| 421 xmlFree(ext_name); | |
| 422 return (-1); | |
| 423 } | |
| 424 | |
| 425 /* construct initialization func name */ | |
| 426 regfunc_name = xmlStrdup(ext_name); | |
| 427 regfunc_name = xmlStrcat(regfunc_name, BAD_CAST "_init"); | |
| 428 | |
| 429 vregfunc = NULL; | |
| 430 rc = xmlModuleSymbol(m, (const char *) regfunc_name, &vregfunc); | |
| 431 regfunc = vregfunc; | |
| 432 if (0 == rc) { | |
| 433 /* | |
| 434 * Call the module's init function. Note that this function | |
| 435 * calls xsltRegisterExtModuleFull which will add the module | |
| 436 * to xsltExtensionsHash (together with it's entry points). | |
| 437 */ | |
| 438 (*regfunc) (); | |
| 439 | |
| 440 /* register this module in our hash */ | |
| 441 xmlMutexLock(xsltExtMutex); | |
| 442 xmlHashAddEntry(xsltModuleHash, URI, (void *) m); | |
| 443 xmlMutexUnlock(xsltExtMutex); | |
| 444 } else { | |
| 445 | |
| 446 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 447 xsltGenericDebug(xsltGenericDebugContext, | |
| 448 "xmlModuleSymbol failed for plugin: %s, regfunc: %s\n", | |
| 449 module_filename, regfunc_name); | |
| 450 #endif | |
| 451 | |
| 452 /* if regfunc not found unload the module immediately */ | |
| 453 xmlModuleClose(m); | |
| 454 } | |
| 455 | |
| 456 xmlFree(ext_name); | |
| 457 xmlFree(regfunc_name); | |
| 458 return (NULL == regfunc) ? -1 : 0; | |
| 459 } | |
| 460 #else | |
| 461 static int | |
| 462 xsltExtModuleRegisterDynamic(const xmlChar * URI ATTRIBUTE_UNUSED) | |
| 463 { | |
| 464 return -1; | |
| 465 } | |
| 466 #endif | |
| 467 | |
| 468 /************************************************************************ | |
| 469 * * | |
| 470 * The stylesheet extension prefixes handling * | |
| 471 * * | |
| 472 ************************************************************************/ | |
| 473 | |
| 474 | |
| 475 /** | |
| 476 * xsltFreeExts: | |
| 477 * @style: an XSLT stylesheet | |
| 478 * | |
| 479 * Free up the memory used by XSLT extensions in a stylesheet | |
| 480 */ | |
| 481 void | |
| 482 xsltFreeExts(xsltStylesheetPtr style) | |
| 483 { | |
| 484 if (style->nsDefs != NULL) | |
| 485 xsltFreeExtDefList((xsltExtDefPtr) style->nsDefs); | |
| 486 } | |
| 487 | |
| 488 /** | |
| 489 * xsltRegisterExtPrefix: | |
| 490 * @style: an XSLT stylesheet | |
| 491 * @prefix: the prefix used (optional) | |
| 492 * @URI: the URI associated to the extension | |
| 493 * | |
| 494 * Registers an extension namespace | |
| 495 * This is called from xslt.c during compile-time. | |
| 496 * The given prefix is not needed. | |
| 497 * Called by: | |
| 498 * xsltParseExtElemPrefixes() (new function) | |
| 499 * xsltRegisterExtPrefix() (old function) | |
| 500 * | |
| 501 * Returns 0 in case of success, 1 if the @URI was already | |
| 502 * registered as an extension namespace and | |
| 503 * -1 in case of failure | |
| 504 */ | |
| 505 int | |
| 506 xsltRegisterExtPrefix(xsltStylesheetPtr style, | |
| 507 const xmlChar * prefix, const xmlChar * URI) | |
| 508 { | |
| 509 xsltExtDefPtr def, ret; | |
| 510 | |
| 511 if ((style == NULL) || (URI == NULL)) | |
| 512 return (-1); | |
| 513 | |
| 514 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 515 xsltGenericDebug(xsltGenericDebugContext, | |
| 516 "Registering extension namespace '%s'.\n", URI); | |
| 517 #endif | |
| 518 def = (xsltExtDefPtr) style->nsDefs; | |
| 519 #ifdef XSLT_REFACTORED | |
| 520 /* | |
| 521 * The extension is associated with a namespace name. | |
| 522 */ | |
| 523 while (def != NULL) { | |
| 524 if (xmlStrEqual(URI, def->URI)) | |
| 525 return (1); | |
| 526 def = def->next; | |
| 527 } | |
| 528 #else | |
| 529 while (def != NULL) { | |
| 530 if (xmlStrEqual(prefix, def->prefix)) | |
| 531 return (-1); | |
| 532 def = def->next; | |
| 533 } | |
| 534 #endif | |
| 535 ret = xsltNewExtDef(prefix, URI); | |
| 536 if (ret == NULL) | |
| 537 return (-1); | |
| 538 ret->next = (xsltExtDefPtr) style->nsDefs; | |
| 539 style->nsDefs = ret; | |
| 540 | |
| 541 /* | |
| 542 * check whether there is an extension module with a stylesheet | |
| 543 * initialization function. | |
| 544 */ | |
| 545 #ifdef XSLT_REFACTORED | |
| 546 /* | |
| 547 * Don't initialize modules based on specified namespaces via | |
| 548 * the attribute "[xsl:]extension-element-prefixes". | |
| 549 */ | |
| 550 #else | |
| 551 if (xsltExtensionsHash != NULL) { | |
| 552 xsltExtModulePtr module; | |
| 553 | |
| 554 xmlMutexLock(xsltExtMutex); | |
| 555 module = xmlHashLookup(xsltExtensionsHash, URI); | |
| 556 xmlMutexUnlock(xsltExtMutex); | |
| 557 if (NULL == module) { | |
| 558 if (!xsltExtModuleRegisterDynamic(URI)) { | |
| 559 xmlMutexLock(xsltExtMutex); | |
| 560 module = xmlHashLookup(xsltExtensionsHash, URI); | |
| 561 xmlMutexUnlock(xsltExtMutex); | |
| 562 } | |
| 563 } | |
| 564 if (module != NULL) { | |
| 565 xsltStyleGetExtData(style, URI); | |
| 566 } | |
| 567 } | |
| 568 #endif | |
| 569 return (0); | |
| 570 } | |
| 571 | |
| 572 /************************************************************************ | |
| 573 * * | |
| 574 * The extensions modules interfaces * | |
| 575 * * | |
| 576 ************************************************************************/ | |
| 577 | |
| 578 /** | |
| 579 * xsltRegisterExtFunction: | |
| 580 * @ctxt: an XSLT transformation context | |
| 581 * @name: the name of the element | |
| 582 * @URI: the URI associated to the element | |
| 583 * @function: the actual implementation which should be called | |
| 584 * | |
| 585 * Registers an extension function | |
| 586 * | |
| 587 * Returns 0 in case of success, -1 in case of failure | |
| 588 */ | |
| 589 int | |
| 590 xsltRegisterExtFunction(xsltTransformContextPtr ctxt, const xmlChar * name, | |
| 591 const xmlChar * URI, xmlXPathFunction function) | |
| 592 { | |
| 593 int ret; | |
| 594 | |
| 595 if ((ctxt == NULL) || (name == NULL) || | |
| 596 (URI == NULL) || (function == NULL)) | |
| 597 return (-1); | |
| 598 if (ctxt->xpathCtxt != NULL) { | |
| 599 xmlXPathRegisterFuncNS(ctxt->xpathCtxt, name, URI, function); | |
| 600 } | |
| 601 if (ctxt->extFunctions == NULL) | |
| 602 ctxt->extFunctions = xmlHashCreate(10); | |
| 603 if (ctxt->extFunctions == NULL) | |
| 604 return (-1); | |
| 605 | |
| 606 ret = xmlHashAddEntry2(ctxt->extFunctions, name, URI, | |
| 607 XML_CAST_FPTR(function)); | |
| 608 | |
| 609 return(ret); | |
| 610 } | |
| 611 | |
| 612 /** | |
| 613 * xsltRegisterExtElement: | |
| 614 * @ctxt: an XSLT transformation context | |
| 615 * @name: the name of the element | |
| 616 * @URI: the URI associated to the element | |
| 617 * @function: the actual implementation which should be called | |
| 618 * | |
| 619 * Registers an extension element | |
| 620 * | |
| 621 * Returns 0 in case of success, -1 in case of failure | |
| 622 */ | |
| 623 int | |
| 624 xsltRegisterExtElement(xsltTransformContextPtr ctxt, const xmlChar * name, | |
| 625 const xmlChar * URI, xsltTransformFunction function) | |
| 626 { | |
| 627 if ((ctxt == NULL) || (name == NULL) || | |
| 628 (URI == NULL) || (function == NULL)) | |
| 629 return (-1); | |
| 630 if (ctxt->extElements == NULL) | |
| 631 ctxt->extElements = xmlHashCreate(10); | |
| 632 if (ctxt->extElements == NULL) | |
| 633 return (-1); | |
| 634 return (xmlHashAddEntry2 | |
| 635 (ctxt->extElements, name, URI, XML_CAST_FPTR(function))); | |
| 636 } | |
| 637 | |
| 638 /** | |
| 639 * xsltFreeCtxtExts: | |
| 640 * @ctxt: an XSLT transformation context | |
| 641 * | |
| 642 * Free the XSLT extension data | |
| 643 */ | |
| 644 void | |
| 645 xsltFreeCtxtExts(xsltTransformContextPtr ctxt) | |
| 646 { | |
| 647 if (ctxt->extElements != NULL) | |
| 648 xmlHashFree(ctxt->extElements, NULL); | |
| 649 if (ctxt->extFunctions != NULL) | |
| 650 xmlHashFree(ctxt->extFunctions, NULL); | |
| 651 } | |
| 652 | |
| 653 /** | |
| 654 * xsltStyleGetStylesheetExtData: | |
| 655 * @style: an XSLT stylesheet | |
| 656 * @URI: the URI associated to the exension module | |
| 657 * | |
| 658 * Fires the compile-time initialization callback | |
| 659 * of an extension module and returns a container | |
| 660 * holding the user-data (retrieved via the callback). | |
| 661 * | |
| 662 * Returns the create module-data container | |
| 663 * or NULL if such a module was not registered. | |
| 664 */ | |
| 665 static xsltExtDataPtr | |
| 666 xsltStyleInitializeStylesheetModule(xsltStylesheetPtr style, | |
| 667 const xmlChar * URI) | |
| 668 { | |
| 669 xsltExtDataPtr dataContainer; | |
| 670 void *userData = NULL; | |
| 671 xsltExtModulePtr module; | |
| 672 | |
| 673 if ((style == NULL) || (URI == NULL)) | |
| 674 return(NULL); | |
| 675 | |
| 676 if (xsltExtensionsHash == NULL) { | |
| 677 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 678 xsltGenericDebug(xsltGenericDebugContext, | |
| 679 "Not registered extension module: %s\n", URI); | |
| 680 #endif | |
| 681 return(NULL); | |
| 682 } | |
| 683 | |
| 684 xmlMutexLock(xsltExtMutex); | |
| 685 | |
| 686 module = xmlHashLookup(xsltExtensionsHash, URI); | |
| 687 | |
| 688 xmlMutexUnlock(xsltExtMutex); | |
| 689 | |
| 690 if (module == NULL) { | |
| 691 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 692 xsltGenericDebug(xsltGenericDebugContext, | |
| 693 "Not registered extension module: %s\n", URI); | |
| 694 #endif | |
| 695 return (NULL); | |
| 696 } | |
| 697 /* | |
| 698 * The specified module was registered so initialize it. | |
| 699 */ | |
| 700 if (style->extInfos == NULL) { | |
| 701 style->extInfos = xmlHashCreate(10); | |
| 702 if (style->extInfos == NULL) | |
| 703 return (NULL); | |
| 704 } | |
| 705 /* | |
| 706 * Fire the initialization callback if available. | |
| 707 */ | |
| 708 if (module->styleInitFunc == NULL) { | |
| 709 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 710 xsltGenericDebug(xsltGenericDebugContext, | |
| 711 "Initializing module with *no* callback: %s\n", URI); | |
| 712 #endif | |
| 713 } else { | |
| 714 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 715 xsltGenericDebug(xsltGenericDebugContext, | |
| 716 "Initializing module with callback: %s\n", URI); | |
| 717 #endif | |
| 718 /* | |
| 719 * Fire the initialization callback. | |
| 720 */ | |
| 721 userData = module->styleInitFunc(style, URI); | |
| 722 } | |
| 723 /* | |
| 724 * Store the user-data in the context of the given stylesheet. | |
| 725 */ | |
| 726 dataContainer = xsltNewExtData(module, userData); | |
| 727 if (dataContainer == NULL) | |
| 728 return (NULL); | |
| 729 | |
| 730 if (xmlHashAddEntry(style->extInfos, URI, | |
| 731 (void *) dataContainer) < 0) | |
| 732 { | |
| 733 xsltTransformError(NULL, style, NULL, | |
| 734 "Failed to register module '%s'.\n", URI); | |
| 735 style->errors++; | |
| 736 if (module->styleShutdownFunc) | |
| 737 module->styleShutdownFunc(style, URI, userData); | |
| 738 xsltFreeExtData(dataContainer); | |
| 739 return (NULL); | |
| 740 } | |
| 741 | |
| 742 return(dataContainer); | |
| 743 } | |
| 744 | |
| 745 /** | |
| 746 * xsltStyleGetExtData: | |
| 747 * @style: an XSLT stylesheet | |
| 748 * @URI: the URI associated to the exension module | |
| 749 * | |
| 750 * Retrieve the data associated to the extension module | |
| 751 * in this given stylesheet. | |
| 752 * Called by: | |
| 753 * xsltRegisterExtPrefix(), | |
| 754 * ( xsltExtElementPreCompTest(), xsltExtInitTest ) | |
| 755 * | |
| 756 * Returns the pointer or NULL if not present | |
| 757 */ | |
| 758 void * | |
| 759 xsltStyleGetExtData(xsltStylesheetPtr style, const xmlChar * URI) | |
| 760 { | |
| 761 xsltExtDataPtr dataContainer = NULL; | |
| 762 xsltStylesheetPtr tmpStyle; | |
| 763 | |
| 764 if ((style == NULL) || (URI == NULL) || | |
| 765 (xsltExtensionsHash == NULL)) | |
| 766 return (NULL); | |
| 767 | |
| 768 | |
| 769 #ifdef XSLT_REFACTORED | |
| 770 /* | |
| 771 * This is intended for global storage, so only the main | |
| 772 * stylesheet will hold the data. | |
| 773 */ | |
| 774 tmpStyle = style; | |
| 775 while (tmpStyle->parent != NULL) | |
| 776 tmpStyle = tmpStyle->parent; | |
| 777 if (tmpStyle->extInfos != NULL) { | |
| 778 dataContainer = | |
| 779 (xsltExtDataPtr) xmlHashLookup(tmpStyle->extInfos, URI); | |
| 780 if (dataContainer != NULL) { | |
| 781 /* | |
| 782 * The module was already initialized in the context | |
| 783 * of this stylesheet; just return the user-data that | |
| 784 * comes with it. | |
| 785 */ | |
| 786 return(dataContainer->extData); | |
| 787 } | |
| 788 } | |
| 789 #else | |
| 790 /* | |
| 791 * Old behaviour. | |
| 792 */ | |
| 793 tmpStyle = style; | |
| 794 while (tmpStyle != NULL) { | |
| 795 if (tmpStyle->extInfos != NULL) { | |
| 796 dataContainer = | |
| 797 (xsltExtDataPtr) xmlHashLookup(tmpStyle->extInfos, URI); | |
| 798 if (dataContainer != NULL) { | |
| 799 return(dataContainer->extData); | |
| 800 } | |
| 801 } | |
| 802 tmpStyle = xsltNextImport(tmpStyle); | |
| 803 } | |
| 804 tmpStyle = style; | |
| 805 #endif | |
| 806 | |
| 807 dataContainer = | |
| 808 xsltStyleInitializeStylesheetModule(tmpStyle, URI); | |
| 809 if (dataContainer != NULL) | |
| 810 return (dataContainer->extData); | |
| 811 return(NULL); | |
| 812 } | |
| 813 | |
| 814 #ifdef XSLT_REFACTORED | |
| 815 /** | |
| 816 * xsltStyleStylesheetLevelGetExtData: | |
| 817 * @style: an XSLT stylesheet | |
| 818 * @URI: the URI associated to the exension module | |
| 819 * | |
| 820 * Retrieve the data associated to the extension module in this given | |
| 821 * stylesheet. | |
| 822 * | |
| 823 * Returns the pointer or NULL if not present | |
| 824 */ | |
| 825 void * | |
| 826 xsltStyleStylesheetLevelGetExtData(xsltStylesheetPtr style, | |
| 827 const xmlChar * URI) | |
| 828 { | |
| 829 xsltExtDataPtr dataContainer = NULL; | |
| 830 | |
| 831 if ((style == NULL) || (URI == NULL) || | |
| 832 (xsltExtensionsHash == NULL)) | |
| 833 return (NULL); | |
| 834 | |
| 835 if (style->extInfos != NULL) { | |
| 836 dataContainer = (xsltExtDataPtr) xmlHashLookup(style->extInfos, URI); | |
| 837 /* | |
| 838 * The module was already initialized in the context | |
| 839 * of this stylesheet; just return the user-data that | |
| 840 * comes with it. | |
| 841 */ | |
| 842 if (dataContainer) | |
| 843 return(dataContainer->extData); | |
| 844 } | |
| 845 | |
| 846 dataContainer = | |
| 847 xsltStyleInitializeStylesheetModule(style, URI); | |
| 848 if (dataContainer != NULL) | |
| 849 return (dataContainer->extData); | |
| 850 return(NULL); | |
| 851 } | |
| 852 #endif | |
| 853 | |
| 854 /** | |
| 855 * xsltGetExtData: | |
| 856 * @ctxt: an XSLT transformation context | |
| 857 * @URI: the URI associated to the exension module | |
| 858 * | |
| 859 * Retrieve the data associated to the extension module in this given | |
| 860 * transformation. | |
| 861 * | |
| 862 * Returns the pointer or NULL if not present | |
| 863 */ | |
| 864 void * | |
| 865 xsltGetExtData(xsltTransformContextPtr ctxt, const xmlChar * URI) | |
| 866 { | |
| 867 xsltExtDataPtr data; | |
| 868 | |
| 869 if ((ctxt == NULL) || (URI == NULL)) | |
| 870 return (NULL); | |
| 871 if (ctxt->extInfos == NULL) { | |
| 872 ctxt->extInfos = xmlHashCreate(10); | |
| 873 if (ctxt->extInfos == NULL) | |
| 874 return (NULL); | |
| 875 data = NULL; | |
| 876 } else { | |
| 877 data = (xsltExtDataPtr) xmlHashLookup(ctxt->extInfos, URI); | |
| 878 } | |
| 879 if (data == NULL) { | |
| 880 void *extData; | |
| 881 xsltExtModulePtr module; | |
| 882 | |
| 883 xmlMutexLock(xsltExtMutex); | |
| 884 | |
| 885 module = xmlHashLookup(xsltExtensionsHash, URI); | |
| 886 | |
| 887 xmlMutexUnlock(xsltExtMutex); | |
| 888 | |
| 889 if (module == NULL) { | |
| 890 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 891 xsltGenericDebug(xsltGenericDebugContext, | |
| 892 "Not registered extension module: %s\n", URI); | |
| 893 #endif | |
| 894 return (NULL); | |
| 895 } else { | |
| 896 if (module->initFunc == NULL) | |
| 897 return (NULL); | |
| 898 | |
| 899 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 900 xsltGenericDebug(xsltGenericDebugContext, | |
| 901 "Initializing module: %s\n", URI); | |
| 902 #endif | |
| 903 | |
| 904 extData = module->initFunc(ctxt, URI); | |
| 905 if (extData == NULL) | |
| 906 return (NULL); | |
| 907 | |
| 908 data = xsltNewExtData(module, extData); | |
| 909 if (data == NULL) | |
| 910 return (NULL); | |
| 911 if (xmlHashAddEntry(ctxt->extInfos, URI, (void *) data) < 0) { | |
| 912 xsltTransformError(ctxt, NULL, NULL, | |
| 913 "Failed to register module data: %s\n", | |
| 914 URI); | |
| 915 if (module->shutdownFunc) | |
| 916 module->shutdownFunc(ctxt, URI, extData); | |
| 917 xsltFreeExtData(data); | |
| 918 return (NULL); | |
| 919 } | |
| 920 } | |
| 921 } | |
| 922 return (data->extData); | |
| 923 } | |
| 924 | |
| 925 typedef struct _xsltInitExtCtxt xsltInitExtCtxt; | |
| 926 struct _xsltInitExtCtxt { | |
| 927 xsltTransformContextPtr ctxt; | |
| 928 int ret; | |
| 929 }; | |
| 930 | |
| 931 /** | |
| 932 * xsltInitCtxtExt: | |
| 933 * @styleData: the registered stylesheet data for the module | |
| 934 * @ctxt: the XSLT transformation context + the return value | |
| 935 * @URI: the extension URI | |
| 936 * | |
| 937 * Initializes an extension module | |
| 938 */ | |
| 939 static void | |
| 940 xsltInitCtxtExt(xsltExtDataPtr styleData, xsltInitExtCtxt * ctxt, | |
| 941 const xmlChar * URI) | |
| 942 { | |
| 943 xsltExtModulePtr module; | |
| 944 xsltExtDataPtr ctxtData; | |
| 945 void *extData; | |
| 946 | |
| 947 if ((styleData == NULL) || (ctxt == NULL) || (URI == NULL) || | |
| 948 (ctxt->ret == -1)) { | |
| 949 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 950 xsltGenericDebug(xsltGenericDebugContext, | |
| 951 "xsltInitCtxtExt: NULL param or error\n"); | |
| 952 #endif | |
| 953 return; | |
| 954 } | |
| 955 module = styleData->extModule; | |
| 956 if ((module == NULL) || (module->initFunc == NULL)) { | |
| 957 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 958 xsltGenericDebug(xsltGenericDebugContext, | |
| 959 "xsltInitCtxtExt: no module or no initFunc\n"); | |
| 960 #endif | |
| 961 return; | |
| 962 } | |
| 963 | |
| 964 ctxtData = (xsltExtDataPtr) xmlHashLookup(ctxt->ctxt->extInfos, URI); | |
| 965 if (ctxtData != NULL) { | |
| 966 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 967 xsltGenericDebug(xsltGenericDebugContext, | |
| 968 "xsltInitCtxtExt: already initialized\n"); | |
| 969 #endif | |
| 970 return; | |
| 971 } | |
| 972 | |
| 973 extData = module->initFunc(ctxt->ctxt, URI); | |
| 974 if (extData == NULL) { | |
| 975 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 976 xsltGenericDebug(xsltGenericDebugContext, | |
| 977 "xsltInitCtxtExt: no extData\n"); | |
| 978 #endif | |
| 979 } | |
| 980 ctxtData = xsltNewExtData(module, extData); | |
| 981 if (ctxtData == NULL) { | |
| 982 ctxt->ret = -1; | |
| 983 return; | |
| 984 } | |
| 985 | |
| 986 if (ctxt->ctxt->extInfos == NULL) | |
| 987 ctxt->ctxt->extInfos = xmlHashCreate(10); | |
| 988 if (ctxt->ctxt->extInfos == NULL) { | |
| 989 ctxt->ret = -1; | |
| 990 return; | |
| 991 } | |
| 992 | |
| 993 if (xmlHashAddEntry(ctxt->ctxt->extInfos, URI, ctxtData) < 0) { | |
| 994 xsltGenericError(xsltGenericErrorContext, | |
| 995 "Failed to register module data: %s\n", URI); | |
| 996 if (module->shutdownFunc) | |
| 997 module->shutdownFunc(ctxt->ctxt, URI, extData); | |
| 998 xsltFreeExtData(ctxtData); | |
| 999 ctxt->ret = -1; | |
| 1000 return; | |
| 1001 } | |
| 1002 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 1003 xsltGenericDebug(xsltGenericDebugContext, "Registered module %s\n", | |
| 1004 URI); | |
| 1005 #endif | |
| 1006 ctxt->ret++; | |
| 1007 } | |
| 1008 | |
| 1009 /** | |
| 1010 * xsltInitCtxtExts: | |
| 1011 * @ctxt: an XSLT transformation context | |
| 1012 * | |
| 1013 * Initialize the set of modules with registered stylesheet data | |
| 1014 * | |
| 1015 * Returns the number of modules initialized or -1 in case of error | |
| 1016 */ | |
| 1017 int | |
| 1018 xsltInitCtxtExts(xsltTransformContextPtr ctxt) | |
| 1019 { | |
| 1020 xsltStylesheetPtr style; | |
| 1021 xsltInitExtCtxt ctx; | |
| 1022 | |
| 1023 if (ctxt == NULL) | |
| 1024 return (-1); | |
| 1025 | |
| 1026 style = ctxt->style; | |
| 1027 if (style == NULL) | |
| 1028 return (-1); | |
| 1029 | |
| 1030 ctx.ctxt = ctxt; | |
| 1031 ctx.ret = 0; | |
| 1032 | |
| 1033 while (style != NULL) { | |
| 1034 if (style->extInfos != NULL) { | |
| 1035 xmlHashScan(style->extInfos, | |
| 1036 (xmlHashScanner) xsltInitCtxtExt, &ctx); | |
| 1037 if (ctx.ret == -1) | |
| 1038 return (-1); | |
| 1039 } | |
| 1040 style = xsltNextImport(style); | |
| 1041 } | |
| 1042 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 1043 xsltGenericDebug(xsltGenericDebugContext, "Registered %d modules\n", | |
| 1044 ctx.ret); | |
| 1045 #endif | |
| 1046 return (ctx.ret); | |
| 1047 } | |
| 1048 | |
| 1049 /** | |
| 1050 * xsltShutdownCtxtExt: | |
| 1051 * @data: the registered data for the module | |
| 1052 * @ctxt: the XSLT transformation context | |
| 1053 * @URI: the extension URI | |
| 1054 * | |
| 1055 * Shutdown an extension module loaded | |
| 1056 */ | |
| 1057 static void | |
| 1058 xsltShutdownCtxtExt(xsltExtDataPtr data, xsltTransformContextPtr ctxt, | |
| 1059 const xmlChar * URI) | |
| 1060 { | |
| 1061 xsltExtModulePtr module; | |
| 1062 | |
| 1063 if ((data == NULL) || (ctxt == NULL) || (URI == NULL)) | |
| 1064 return; | |
| 1065 module = data->extModule; | |
| 1066 if ((module == NULL) || (module->shutdownFunc == NULL)) | |
| 1067 return; | |
| 1068 | |
| 1069 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 1070 xsltGenericDebug(xsltGenericDebugContext, | |
| 1071 "Shutting down module : %s\n", URI); | |
| 1072 #endif | |
| 1073 module->shutdownFunc(ctxt, URI, data->extData); | |
| 1074 } | |
| 1075 | |
| 1076 /** | |
| 1077 * xsltShutdownCtxtExts: | |
| 1078 * @ctxt: an XSLT transformation context | |
| 1079 * | |
| 1080 * Shutdown the set of modules loaded | |
| 1081 */ | |
| 1082 void | |
| 1083 xsltShutdownCtxtExts(xsltTransformContextPtr ctxt) | |
| 1084 { | |
| 1085 if (ctxt == NULL) | |
| 1086 return; | |
| 1087 if (ctxt->extInfos == NULL) | |
| 1088 return; | |
| 1089 xmlHashScan(ctxt->extInfos, (xmlHashScanner) xsltShutdownCtxtExt, | |
| 1090 ctxt); | |
| 1091 xmlHashFree(ctxt->extInfos, (xmlHashDeallocator) xsltFreeExtData); | |
| 1092 ctxt->extInfos = NULL; | |
| 1093 } | |
| 1094 | |
| 1095 /** | |
| 1096 * xsltShutdownExt: | |
| 1097 * @data: the registered data for the module | |
| 1098 * @ctxt: the XSLT stylesheet | |
| 1099 * @URI: the extension URI | |
| 1100 * | |
| 1101 * Shutdown an extension module loaded | |
| 1102 */ | |
| 1103 static void | |
| 1104 xsltShutdownExt(xsltExtDataPtr data, xsltStylesheetPtr style, | |
| 1105 const xmlChar * URI) | |
| 1106 { | |
| 1107 xsltExtModulePtr module; | |
| 1108 | |
| 1109 if ((data == NULL) || (style == NULL) || (URI == NULL)) | |
| 1110 return; | |
| 1111 module = data->extModule; | |
| 1112 if ((module == NULL) || (module->styleShutdownFunc == NULL)) | |
| 1113 return; | |
| 1114 | |
| 1115 #ifdef WITH_XSLT_DEBUG_EXTENSIONS | |
| 1116 xsltGenericDebug(xsltGenericDebugContext, | |
| 1117 "Shutting down module : %s\n", URI); | |
| 1118 #endif | |
| 1119 module->styleShutdownFunc(style, URI, data->extData); | |
| 1120 /* | |
| 1121 * Don't remove the entry from the hash table here, since | |
| 1122 * this will produce segfaults - this fixes bug #340624. | |
| 1123 * | |
| 1124 * xmlHashRemoveEntry(style->extInfos, URI, | |
| 1125 * (xmlHashDeallocator) xsltFreeExtData); | |
| 1126 */ | |
| 1127 } | |
| 1128 | |
| 1129 /** | |
| 1130 * xsltShutdownExts: | |
| 1131 * @style: an XSLT stylesheet | |
| 1132 * | |
| 1133 * Shutdown the set of modules loaded | |
| 1134 */ | |
| 1135 void | |
| 1136 xsltShutdownExts(xsltStylesheetPtr style) | |
| 1137 { | |
| 1138 if (style == NULL) | |
| 1139 return; | |
| 1140 if (style->extInfos == NULL) | |
| 1141 return; | |
| 1142 xmlHashScan(style->extInfos, (xmlHashScanner) xsltShutdownExt, style); | |
| 1143 xmlHashFree(style->extInfos, (xmlHashDeallocator) xsltFreeExtData); | |
| 1144 style->extInfos = NULL; | |
| 1145 } | |
| 1146 | |
| 1147 /** | |
| 1148 * xsltCheckExtPrefix: | |
| 1149 * @style: the stylesheet | |
| 1150 * @URI: the namespace prefix (possibly NULL) | |
| 1151 * | |
| 1152 * Check if the given prefix is one of the declared extensions. | |
| 1153 * This is intended to be called only at compile-time. | |
| 1154 * Called by: | |
| 1155 * xsltGetInheritedNsList() (xslt.c) | |
| 1156 * xsltParseTemplateContent (xslt.c) | |
| 1157 * | |
| 1158 * Returns 1 if this is an extension, 0 otherwise | |
| 1159 */ | |
| 1160 int | |
| 1161 xsltCheckExtPrefix(xsltStylesheetPtr style, const xmlChar * URI) | |
| 1162 { | |
| 1163 #ifdef XSLT_REFACTORED | |
| 1164 if ((style == NULL) || (style->compCtxt == NULL) || | |
| 1165 (XSLT_CCTXT(style)->inode == NULL) || | |
| 1166 (XSLT_CCTXT(style)->inode->extElemNs == NULL)) | |
| 1167 return (0); | |
| 1168 /* | |
| 1169 * Lookup the extension namespaces registered | |
| 1170 * at the current node in the stylesheet's tree. | |
| 1171 */ | |
| 1172 if (XSLT_CCTXT(style)->inode->extElemNs != NULL) { | |
| 1173 int i; | |
| 1174 xsltPointerListPtr list = XSLT_CCTXT(style)->inode->extElemNs; | |
| 1175 | |
| 1176 for (i = 0; i < list->number; i++) { | |
| 1177 if (xmlStrEqual((const xmlChar *) list->items[i], | |
| 1178 URI)) | |
| 1179 { | |
| 1180 return(1); | |
| 1181 } | |
| 1182 } | |
| 1183 } | |
| 1184 #else | |
| 1185 xsltExtDefPtr cur; | |
| 1186 | |
| 1187 if ((style == NULL) || (style->nsDefs == NULL)) | |
| 1188 return (0); | |
| 1189 if (URI == NULL) | |
| 1190 URI = BAD_CAST "#default"; | |
| 1191 cur = (xsltExtDefPtr) style->nsDefs; | |
| 1192 while (cur != NULL) { | |
| 1193 /* | |
| 1194 * NOTE: This was change to work on namespace names rather | |
| 1195 * than namespace prefixes. This fixes bug #339583. | |
| 1196 * TODO: Consider renaming the field "prefix" of xsltExtDef | |
| 1197 * to "href". | |
| 1198 */ | |
| 1199 if (xmlStrEqual(URI, cur->prefix)) | |
| 1200 return (1); | |
| 1201 cur = cur->next; | |
| 1202 } | |
| 1203 #endif | |
| 1204 return (0); | |
| 1205 } | |
| 1206 | |
| 1207 /** | |
| 1208 * xsltCheckExtURI: | |
| 1209 * @style: the stylesheet | |
| 1210 * @URI: the namespace URI (possibly NULL) | |
| 1211 * | |
| 1212 * Check if the given prefix is one of the declared extensions. | |
| 1213 * This is intended to be called only at compile-time. | |
| 1214 * Called by: | |
| 1215 * xsltPrecomputeStylesheet() (xslt.c) | |
| 1216 * xsltParseTemplateContent (xslt.c) | |
| 1217 * | |
| 1218 * Returns 1 if this is an extension, 0 otherwise | |
| 1219 */ | |
| 1220 int | |
| 1221 xsltCheckExtURI(xsltStylesheetPtr style, const xmlChar * URI) | |
| 1222 { | |
| 1223 xsltExtDefPtr cur; | |
| 1224 | |
| 1225 if ((style == NULL) || (style->nsDefs == NULL)) | |
| 1226 return (0); | |
| 1227 if (URI == NULL) | |
| 1228 return (0); | |
| 1229 cur = (xsltExtDefPtr) style->nsDefs; | |
| 1230 while (cur != NULL) { | |
| 1231 if (xmlStrEqual(URI, cur->URI)) | |
| 1232 return (1); | |
| 1233 cur = cur->next; | |
| 1234 } | |
| 1235 return (0); | |
| 1236 } | |
| 1237 | |
| 1238 /** | |
| 1239 * xsltRegisterExtModuleFull: | |
| 1240 * @URI: URI associated to this module | |
| 1241 * @initFunc: the module initialization function | |
| 1242 * @shutdownFunc: the module shutdown function | |
| 1243 * @styleInitFunc: the module initialization function | |
| 1244 * @styleShutdownFunc: the module shutdown function | |
| 1245 * | |
| 1246 * Register an XSLT extension module to the library. | |
| 1247 * | |
| 1248 * Returns 0 if sucessful, -1 in case of error | |
| 1249 */ | |
| 1250 int | |
| 1251 xsltRegisterExtModuleFull(const xmlChar * URI, | |
| 1252 xsltExtInitFunction initFunc, | |
| 1253 xsltExtShutdownFunction shutdownFunc, | |
| 1254 xsltStyleExtInitFunction styleInitFunc, | |
| 1255 xsltStyleExtShutdownFunction styleShutdownFunc) | |
| 1256 { | |
| 1257 int ret; | |
| 1258 xsltExtModulePtr module; | |
| 1259 | |
| 1260 if ((URI == NULL) || (initFunc == NULL)) | |
| 1261 return (-1); | |
| 1262 if (xsltExtensionsHash == NULL) | |
| 1263 xsltExtensionsHash = xmlHashCreate(10); | |
| 1264 | |
| 1265 if (xsltExtensionsHash == NULL) | |
| 1266 return (-1); | |
| 1267 | |
| 1268 xmlMutexLock(xsltExtMutex); | |
| 1269 | |
| 1270 module = xmlHashLookup(xsltExtensionsHash, URI); | |
| 1271 if (module != NULL) { | |
| 1272 if ((module->initFunc == initFunc) && | |
| 1273 (module->shutdownFunc == shutdownFunc)) | |
| 1274 ret = 0; | |
| 1275 else | |
| 1276 ret = -1; | |
| 1277 goto done; | |
| 1278 } | |
| 1279 module = xsltNewExtModule(initFunc, shutdownFunc, | |
| 1280 styleInitFunc, styleShutdownFunc); | |
| 1281 if (module == NULL) { | |
| 1282 ret = -1; | |
| 1283 goto done; | |
| 1284 } | |
| 1285 ret = xmlHashAddEntry(xsltExtensionsHash, URI, (void *) module); | |
| 1286 | |
| 1287 done: | |
| 1288 xmlMutexUnlock(xsltExtMutex); | |
| 1289 return (ret); | |
| 1290 } | |
| 1291 | |
| 1292 /** | |
| 1293 * xsltRegisterExtModule: | |
| 1294 * @URI: URI associated to this module | |
| 1295 * @initFunc: the module initialization function | |
| 1296 * @shutdownFunc: the module shutdown function | |
| 1297 * | |
| 1298 * Register an XSLT extension module to the library. | |
| 1299 * | |
| 1300 * Returns 0 if sucessful, -1 in case of error | |
| 1301 */ | |
| 1302 int | |
| 1303 xsltRegisterExtModule(const xmlChar * URI, | |
| 1304 xsltExtInitFunction initFunc, | |
| 1305 xsltExtShutdownFunction shutdownFunc) | |
| 1306 { | |
| 1307 return xsltRegisterExtModuleFull(URI, initFunc, shutdownFunc, | |
| 1308 NULL, NULL); | |
| 1309 } | |
| 1310 | |
| 1311 /** | |
| 1312 * xsltUnregisterExtModule: | |
| 1313 * @URI: URI associated to this module | |
| 1314 * | |
| 1315 * Unregister an XSLT extension module from the library. | |
| 1316 * | |
| 1317 * Returns 0 if sucessful, -1 in case of error | |
| 1318 */ | |
| 1319 int | |
| 1320 xsltUnregisterExtModule(const xmlChar * URI) | |
| 1321 { | |
| 1322 int ret; | |
| 1323 | |
| 1324 if (URI == NULL) | |
| 1325 return (-1); | |
| 1326 if (xsltExtensionsHash == NULL) | |
| 1327 return (-1); | |
| 1328 | |
| 1329 xmlMutexLock(xsltExtMutex); | |
| 1330 | |
| 1331 ret = xmlHashRemoveEntry(xsltExtensionsHash, URI, | |
| 1332 (xmlHashDeallocator) xsltFreeExtModule); | |
| 1333 | |
| 1334 xmlMutexUnlock(xsltExtMutex); | |
| 1335 | |
| 1336 return (ret); | |
| 1337 } | |
| 1338 | |
| 1339 /** | |
| 1340 * xsltUnregisterAllExtModules: | |
| 1341 * | |
| 1342 * Unregister all the XSLT extension module from the library. | |
| 1343 */ | |
| 1344 static void | |
| 1345 xsltUnregisterAllExtModules(void) | |
| 1346 { | |
| 1347 if (xsltExtensionsHash == NULL) | |
| 1348 return; | |
| 1349 | |
| 1350 xmlMutexLock(xsltExtMutex); | |
| 1351 | |
| 1352 xmlHashFree(xsltExtensionsHash, | |
| 1353 (xmlHashDeallocator) xsltFreeExtModule); | |
| 1354 xsltExtensionsHash = NULL; | |
| 1355 | |
| 1356 xmlMutexUnlock(xsltExtMutex); | |
| 1357 } | |
| 1358 | |
| 1359 /** | |
| 1360 * xsltXPathGetTransformContext: | |
| 1361 * @ctxt: an XPath transformation context | |
| 1362 * | |
| 1363 * Provides the XSLT transformation context from the XPath transformation | |
| 1364 * context. This is useful when an XPath function in the extension module | |
| 1365 * is called by the XPath interpreter and that the XSLT context is needed | |
| 1366 * for example to retrieve the associated data pertaining to this XSLT | |
| 1367 * transformation. | |
| 1368 * | |
| 1369 * Returns the XSLT transformation context or NULL in case of error. | |
| 1370 */ | |
| 1371 xsltTransformContextPtr | |
| 1372 xsltXPathGetTransformContext(xmlXPathParserContextPtr ctxt) | |
| 1373 { | |
| 1374 if ((ctxt == NULL) || (ctxt->context == NULL)) | |
| 1375 return (NULL); | |
| 1376 return (ctxt->context->extra); | |
| 1377 } | |
| 1378 | |
| 1379 /** | |
| 1380 * xsltRegisterExtModuleFunction: | |
| 1381 * @name: the function name | |
| 1382 * @URI: the function namespace URI | |
| 1383 * @function: the function callback | |
| 1384 * | |
| 1385 * Registers an extension module function. | |
| 1386 * | |
| 1387 * Returns 0 if successful, -1 in case of error. | |
| 1388 */ | |
| 1389 int | |
| 1390 xsltRegisterExtModuleFunction(const xmlChar * name, const xmlChar * URI, | |
| 1391 xmlXPathFunction function) | |
| 1392 { | |
| 1393 if ((name == NULL) || (URI == NULL) || (function == NULL)) | |
| 1394 return (-1); | |
| 1395 | |
| 1396 if (xsltFunctionsHash == NULL) | |
| 1397 xsltFunctionsHash = xmlHashCreate(10); | |
| 1398 if (xsltFunctionsHash == NULL) | |
| 1399 return (-1); | |
| 1400 | |
| 1401 xmlMutexLock(xsltExtMutex); | |
| 1402 | |
| 1403 xmlHashUpdateEntry2(xsltFunctionsHash, name, URI, | |
| 1404 XML_CAST_FPTR(function), NULL); | |
| 1405 | |
| 1406 xmlMutexUnlock(xsltExtMutex); | |
| 1407 | |
| 1408 return (0); | |
| 1409 } | |
| 1410 | |
| 1411 /** | |
| 1412 * xsltExtModuleFunctionLookup: | |
| 1413 * @name: the function name | |
| 1414 * @URI: the function namespace URI | |
| 1415 * | |
| 1416 * Looks up an extension module function | |
| 1417 * | |
| 1418 * Returns the function if found, NULL otherwise. | |
| 1419 */ | |
| 1420 xmlXPathFunction | |
| 1421 xsltExtModuleFunctionLookup(const xmlChar * name, const xmlChar * URI) | |
| 1422 { | |
| 1423 xmlXPathFunction ret; | |
| 1424 | |
| 1425 if ((xsltFunctionsHash == NULL) || (name == NULL) || (URI == NULL)) | |
| 1426 return (NULL); | |
| 1427 | |
| 1428 xmlMutexLock(xsltExtMutex); | |
| 1429 | |
| 1430 XML_CAST_FPTR(ret) = xmlHashLookup2(xsltFunctionsHash, name, URI); | |
| 1431 | |
| 1432 xmlMutexUnlock(xsltExtMutex); | |
| 1433 | |
| 1434 /* if lookup fails, attempt a dynamic load on supported platforms */ | |
| 1435 if (NULL == ret) { | |
| 1436 if (!xsltExtModuleRegisterDynamic(URI)) { | |
| 1437 xmlMutexLock(xsltExtMutex); | |
| 1438 | |
| 1439 XML_CAST_FPTR(ret) = | |
| 1440 xmlHashLookup2(xsltFunctionsHash, name, URI); | |
| 1441 | |
| 1442 xmlMutexUnlock(xsltExtMutex); | |
| 1443 } | |
| 1444 } | |
| 1445 | |
| 1446 return ret; | |
| 1447 } | |
| 1448 | |
| 1449 /** | |
| 1450 * xsltUnregisterExtModuleFunction: | |
| 1451 * @name: the function name | |
| 1452 * @URI: the function namespace URI | |
| 1453 * | |
| 1454 * Unregisters an extension module function | |
| 1455 * | |
| 1456 * Returns 0 if successful, -1 in case of error. | |
| 1457 */ | |
| 1458 int | |
| 1459 xsltUnregisterExtModuleFunction(const xmlChar * name, const xmlChar * URI) | |
| 1460 { | |
| 1461 int ret; | |
| 1462 | |
| 1463 if ((xsltFunctionsHash == NULL) || (name == NULL) || (URI == NULL)) | |
| 1464 return (-1); | |
| 1465 | |
| 1466 xmlMutexLock(xsltExtMutex); | |
| 1467 | |
| 1468 ret = xmlHashRemoveEntry2(xsltFunctionsHash, name, URI, NULL); | |
| 1469 | |
| 1470 xmlMutexUnlock(xsltExtMutex); | |
| 1471 | |
| 1472 return(ret); | |
| 1473 } | |
| 1474 | |
| 1475 /** | |
| 1476 * xsltUnregisterAllExtModuleFunction: | |
| 1477 * | |
| 1478 * Unregisters all extension module function | |
| 1479 */ | |
| 1480 static void | |
| 1481 xsltUnregisterAllExtModuleFunction(void) | |
| 1482 { | |
| 1483 xmlMutexLock(xsltExtMutex); | |
| 1484 | |
| 1485 xmlHashFree(xsltFunctionsHash, NULL); | |
| 1486 xsltFunctionsHash = NULL; | |
| 1487 | |
| 1488 xmlMutexUnlock(xsltExtMutex); | |
| 1489 } | |
| 1490 | |
| 1491 | |
| 1492 /** | |
| 1493 * xsltNewElemPreComp: | |
| 1494 * @style: the XSLT stylesheet | |
| 1495 * @inst: the element node | |
| 1496 * @function: the transform function | |
| 1497 * | |
| 1498 * Creates and initializes an #xsltElemPreComp | |
| 1499 * | |
| 1500 * Returns the new and initialized #xsltElemPreComp | |
| 1501 */ | |
| 1502 xsltElemPreCompPtr | |
| 1503 xsltNewElemPreComp(xsltStylesheetPtr style, xmlNodePtr inst, | |
| 1504 xsltTransformFunction function) | |
| 1505 { | |
| 1506 xsltElemPreCompPtr cur; | |
| 1507 | |
| 1508 cur = (xsltElemPreCompPtr) xmlMalloc(sizeof(xsltElemPreComp)); | |
| 1509 if (cur == NULL) { | |
| 1510 xsltTransformError(NULL, style, NULL, | |
| 1511 "xsltNewExtElement : malloc failed\n"); | |
| 1512 return (NULL); | |
| 1513 } | |
| 1514 memset(cur, 0, sizeof(xsltElemPreComp)); | |
| 1515 | |
| 1516 xsltInitElemPreComp(cur, style, inst, function, | |
| 1517 (xsltElemPreCompDeallocator) xmlFree); | |
| 1518 | |
| 1519 return (cur); | |
| 1520 } | |
| 1521 | |
| 1522 /** | |
| 1523 * xsltInitElemPreComp: | |
| 1524 * @comp: an #xsltElemPreComp (or generally a derived structure) | |
| 1525 * @style: the XSLT stylesheet | |
| 1526 * @inst: the element node | |
| 1527 * @function: the transform function | |
| 1528 * @freeFunc: the @comp deallocator | |
| 1529 * | |
| 1530 * Initializes an existing #xsltElemPreComp structure. This is usefull | |
| 1531 * when extending an #xsltElemPreComp to store precomputed data. | |
| 1532 * This function MUST be called on any extension element precomputed | |
| 1533 * data struct. | |
| 1534 */ | |
| 1535 void | |
| 1536 xsltInitElemPreComp(xsltElemPreCompPtr comp, xsltStylesheetPtr style, | |
| 1537 xmlNodePtr inst, xsltTransformFunction function, | |
| 1538 xsltElemPreCompDeallocator freeFunc) | |
| 1539 { | |
| 1540 comp->type = XSLT_FUNC_EXTENSION; | |
| 1541 comp->func = function; | |
| 1542 comp->inst = inst; | |
| 1543 comp->free = freeFunc; | |
| 1544 | |
| 1545 comp->next = style->preComps; | |
| 1546 style->preComps = comp; | |
| 1547 } | |
| 1548 | |
| 1549 /** | |
| 1550 * xsltPreComputeExtModuleElement: | |
| 1551 * @style: the stylesheet | |
| 1552 * @inst: the element node | |
| 1553 * | |
| 1554 * Precomputes an extension module element | |
| 1555 * | |
| 1556 * Returns the precomputed data | |
| 1557 */ | |
| 1558 xsltElemPreCompPtr | |
| 1559 xsltPreComputeExtModuleElement(xsltStylesheetPtr style, xmlNodePtr inst) | |
| 1560 { | |
| 1561 xsltExtElementPtr ext; | |
| 1562 xsltElemPreCompPtr comp = NULL; | |
| 1563 | |
| 1564 if ((style == NULL) || (inst == NULL) || | |
| 1565 (inst->type != XML_ELEMENT_NODE) || (inst->ns == NULL)) | |
| 1566 return (NULL); | |
| 1567 | |
| 1568 xmlMutexLock(xsltExtMutex); | |
| 1569 | |
| 1570 ext = (xsltExtElementPtr) | |
| 1571 xmlHashLookup2(xsltElementsHash, inst->name, inst->ns->href); | |
| 1572 | |
| 1573 xmlMutexUnlock(xsltExtMutex); | |
| 1574 | |
| 1575 /* | |
| 1576 * EXT TODO: Now what? | |
| 1577 */ | |
| 1578 if (ext == NULL) | |
| 1579 return (NULL); | |
| 1580 | |
| 1581 if (ext->precomp != NULL) { | |
| 1582 /* | |
| 1583 * REVISIT TODO: Check if the text below is correct. | |
| 1584 * This will return a xsltElemPreComp structure or NULL. | |
| 1585 * 1) If the the author of the extension needs a | |
| 1586 * custom structure to hold the specific values of | |
| 1587 * this extension, he will derive a structure based on | |
| 1588 * xsltElemPreComp; thus we obviously *cannot* refactor | |
| 1589 * the xsltElemPreComp structure, since all already derived | |
| 1590 * user-defined strucures will break. | |
| 1591 * Example: For the extension xsl:document, | |
| 1592 * in xsltDocumentComp() (preproc.c), the structure | |
| 1593 * xsltStyleItemDocument is allocated, filled with | |
| 1594 * specific values and returned. | |
| 1595 * 2) If the author needs no values to be stored in | |
| 1596 * this structure, then he'll return NULL; | |
| 1597 */ | |
| 1598 comp = ext->precomp(style, inst, ext->transform); | |
| 1599 } | |
| 1600 if (comp == NULL) { | |
| 1601 /* | |
| 1602 * Default creation of a xsltElemPreComp structure, if | |
| 1603 * the author of this extension did not create a custom | |
| 1604 * structure. | |
| 1605 */ | |
| 1606 comp = xsltNewElemPreComp(style, inst, ext->transform); | |
| 1607 } | |
| 1608 | |
| 1609 return (comp); | |
| 1610 } | |
| 1611 | |
| 1612 /** | |
| 1613 * xsltRegisterExtModuleElement: | |
| 1614 * @name: the element name | |
| 1615 * @URI: the element namespace URI | |
| 1616 * @precomp: the pre-computation callback | |
| 1617 * @transform: the transformation callback | |
| 1618 * | |
| 1619 * Registers an extension module element. | |
| 1620 * | |
| 1621 * Returns 0 if successful, -1 in case of error. | |
| 1622 */ | |
| 1623 int | |
| 1624 xsltRegisterExtModuleElement(const xmlChar * name, const xmlChar * URI, | |
| 1625 xsltPreComputeFunction precomp, | |
| 1626 xsltTransformFunction transform) | |
| 1627 { | |
| 1628 int ret = 0; | |
| 1629 | |
| 1630 xsltExtElementPtr ext; | |
| 1631 | |
| 1632 if ((name == NULL) || (URI == NULL) || (transform == NULL)) | |
| 1633 return (-1); | |
| 1634 | |
| 1635 if (xsltElementsHash == NULL) | |
| 1636 xsltElementsHash = xmlHashCreate(10); | |
| 1637 if (xsltElementsHash == NULL) | |
| 1638 return (-1); | |
| 1639 | |
| 1640 xmlMutexLock(xsltExtMutex); | |
| 1641 | |
| 1642 ext = xsltNewExtElement(precomp, transform); | |
| 1643 if (ext == NULL) { | |
| 1644 ret = -1; | |
| 1645 goto done; | |
| 1646 } | |
| 1647 | |
| 1648 xmlHashUpdateEntry2(xsltElementsHash, name, URI, (void *) ext, | |
| 1649 (xmlHashDeallocator) xsltFreeExtElement); | |
| 1650 | |
| 1651 done: | |
| 1652 xmlMutexUnlock(xsltExtMutex); | |
| 1653 | |
| 1654 return (ret); | |
| 1655 } | |
| 1656 | |
| 1657 /** | |
| 1658 * xsltExtElementLookup: | |
| 1659 * @ctxt: an XSLT process context | |
| 1660 * @name: the element name | |
| 1661 * @URI: the element namespace URI | |
| 1662 * | |
| 1663 * Looks up an extension element. @ctxt can be NULL to search only in | |
| 1664 * module elements. | |
| 1665 * | |
| 1666 * Returns the element callback or NULL if not found | |
| 1667 */ | |
| 1668 xsltTransformFunction | |
| 1669 xsltExtElementLookup(xsltTransformContextPtr ctxt, | |
| 1670 const xmlChar * name, const xmlChar * URI) | |
| 1671 { | |
| 1672 xsltTransformFunction ret; | |
| 1673 | |
| 1674 if ((name == NULL) || (URI == NULL)) | |
| 1675 return (NULL); | |
| 1676 | |
| 1677 if ((ctxt != NULL) && (ctxt->extElements != NULL)) { | |
| 1678 XML_CAST_FPTR(ret) = xmlHashLookup2(ctxt->extElements, name, URI); | |
| 1679 if (ret != NULL) { | |
| 1680 return(ret); | |
| 1681 } | |
| 1682 } | |
| 1683 | |
| 1684 ret = xsltExtModuleElementLookup(name, URI); | |
| 1685 | |
| 1686 return (ret); | |
| 1687 } | |
| 1688 | |
| 1689 /** | |
| 1690 * xsltExtModuleElementLookup: | |
| 1691 * @name: the element name | |
| 1692 * @URI: the element namespace URI | |
| 1693 * | |
| 1694 * Looks up an extension module element | |
| 1695 * | |
| 1696 * Returns the callback function if found, NULL otherwise. | |
| 1697 */ | |
| 1698 xsltTransformFunction | |
| 1699 xsltExtModuleElementLookup(const xmlChar * name, const xmlChar * URI) | |
| 1700 { | |
| 1701 xsltExtElementPtr ext; | |
| 1702 | |
| 1703 if ((xsltElementsHash == NULL) || (name == NULL) || (URI == NULL)) | |
| 1704 return (NULL); | |
| 1705 | |
| 1706 xmlMutexLock(xsltExtMutex); | |
| 1707 | |
| 1708 ext = (xsltExtElementPtr) xmlHashLookup2(xsltElementsHash, name, URI); | |
| 1709 | |
| 1710 xmlMutexUnlock(xsltExtMutex); | |
| 1711 | |
| 1712 /* | |
| 1713 * if function lookup fails, attempt a dynamic load on | |
| 1714 * supported platforms | |
| 1715 */ | |
| 1716 if (NULL == ext) { | |
| 1717 if (!xsltExtModuleRegisterDynamic(URI)) { | |
| 1718 xmlMutexLock(xsltExtMutex); | |
| 1719 | |
| 1720 ext = (xsltExtElementPtr) | |
| 1721 xmlHashLookup2(xsltElementsHash, name, URI); | |
| 1722 | |
| 1723 xmlMutexUnlock(xsltExtMutex); | |
| 1724 } | |
| 1725 } | |
| 1726 | |
| 1727 if (ext == NULL) | |
| 1728 return (NULL); | |
| 1729 return (ext->transform); | |
| 1730 } | |
| 1731 | |
| 1732 /** | |
| 1733 * xsltExtModuleElementPreComputeLookup: | |
| 1734 * @name: the element name | |
| 1735 * @URI: the element namespace URI | |
| 1736 * | |
| 1737 * Looks up an extension module element pre-computation function | |
| 1738 * | |
| 1739 * Returns the callback function if found, NULL otherwise. | |
| 1740 */ | |
| 1741 xsltPreComputeFunction | |
| 1742 xsltExtModuleElementPreComputeLookup(const xmlChar * name, | |
| 1743 const xmlChar * URI) | |
| 1744 { | |
| 1745 xsltExtElementPtr ext; | |
| 1746 | |
| 1747 if ((xsltElementsHash == NULL) || (name == NULL) || (URI == NULL)) | |
| 1748 return (NULL); | |
| 1749 | |
| 1750 xmlMutexLock(xsltExtMutex); | |
| 1751 | |
| 1752 ext = (xsltExtElementPtr) xmlHashLookup2(xsltElementsHash, name, URI); | |
| 1753 | |
| 1754 xmlMutexUnlock(xsltExtMutex); | |
| 1755 | |
| 1756 if (ext == NULL) { | |
| 1757 if (!xsltExtModuleRegisterDynamic(URI)) { | |
| 1758 xmlMutexLock(xsltExtMutex); | |
| 1759 | |
| 1760 ext = (xsltExtElementPtr) | |
| 1761 xmlHashLookup2(xsltElementsHash, name, URI); | |
| 1762 | |
| 1763 xmlMutexUnlock(xsltExtMutex); | |
| 1764 } | |
| 1765 } | |
| 1766 | |
| 1767 if (ext == NULL) | |
| 1768 return (NULL); | |
| 1769 return (ext->precomp); | |
| 1770 } | |
| 1771 | |
| 1772 /** | |
| 1773 * xsltUnregisterExtModuleElement: | |
| 1774 * @name: the element name | |
| 1775 * @URI: the element namespace URI | |
| 1776 * | |
| 1777 * Unregisters an extension module element | |
| 1778 * | |
| 1779 * Returns 0 if successful, -1 in case of error. | |
| 1780 */ | |
| 1781 int | |
| 1782 xsltUnregisterExtModuleElement(const xmlChar * name, const xmlChar * URI) | |
| 1783 { | |
| 1784 int ret; | |
| 1785 | |
| 1786 if ((xsltElementsHash == NULL) || (name == NULL) || (URI == NULL)) | |
| 1787 return (-1); | |
| 1788 | |
| 1789 xmlMutexLock(xsltExtMutex); | |
| 1790 | |
| 1791 ret = xmlHashRemoveEntry2(xsltElementsHash, name, URI, | |
| 1792 (xmlHashDeallocator) xsltFreeExtElement); | |
| 1793 | |
| 1794 xmlMutexUnlock(xsltExtMutex); | |
| 1795 | |
| 1796 return(ret); | |
| 1797 } | |
| 1798 | |
| 1799 /** | |
| 1800 * xsltUnregisterAllExtModuleElement: | |
| 1801 * | |
| 1802 * Unregisters all extension module element | |
| 1803 */ | |
| 1804 static void | |
| 1805 xsltUnregisterAllExtModuleElement(void) | |
| 1806 { | |
| 1807 xmlMutexLock(xsltExtMutex); | |
| 1808 | |
| 1809 xmlHashFree(xsltElementsHash, (xmlHashDeallocator) xsltFreeExtElement); | |
| 1810 xsltElementsHash = NULL; | |
| 1811 | |
| 1812 xmlMutexUnlock(xsltExtMutex); | |
| 1813 } | |
| 1814 | |
| 1815 /** | |
| 1816 * xsltRegisterExtModuleTopLevel: | |
| 1817 * @name: the top-level element name | |
| 1818 * @URI: the top-level element namespace URI | |
| 1819 * @function: the top-level element callback | |
| 1820 * | |
| 1821 * Registers an extension module top-level element. | |
| 1822 * | |
| 1823 * Returns 0 if successful, -1 in case of error. | |
| 1824 */ | |
| 1825 int | |
| 1826 xsltRegisterExtModuleTopLevel(const xmlChar * name, const xmlChar * URI, | |
| 1827 xsltTopLevelFunction function) | |
| 1828 { | |
| 1829 if ((name == NULL) || (URI == NULL) || (function == NULL)) | |
| 1830 return (-1); | |
| 1831 | |
| 1832 if (xsltTopLevelsHash == NULL) | |
| 1833 xsltTopLevelsHash = xmlHashCreate(10); | |
| 1834 if (xsltTopLevelsHash == NULL) | |
| 1835 return (-1); | |
| 1836 | |
| 1837 xmlMutexLock(xsltExtMutex); | |
| 1838 | |
| 1839 xmlHashUpdateEntry2(xsltTopLevelsHash, name, URI, | |
| 1840 XML_CAST_FPTR(function), NULL); | |
| 1841 | |
| 1842 xmlMutexUnlock(xsltExtMutex); | |
| 1843 | |
| 1844 return (0); | |
| 1845 } | |
| 1846 | |
| 1847 /** | |
| 1848 * xsltExtModuleTopLevelLookup: | |
| 1849 * @name: the top-level element name | |
| 1850 * @URI: the top-level element namespace URI | |
| 1851 * | |
| 1852 * Looks up an extension module top-level element | |
| 1853 * | |
| 1854 * Returns the callback function if found, NULL otherwise. | |
| 1855 */ | |
| 1856 xsltTopLevelFunction | |
| 1857 xsltExtModuleTopLevelLookup(const xmlChar * name, const xmlChar * URI) | |
| 1858 { | |
| 1859 xsltTopLevelFunction ret; | |
| 1860 | |
| 1861 if ((xsltTopLevelsHash == NULL) || (name == NULL) || (URI == NULL)) | |
| 1862 return (NULL); | |
| 1863 | |
| 1864 xmlMutexLock(xsltExtMutex); | |
| 1865 | |
| 1866 XML_CAST_FPTR(ret) = xmlHashLookup2(xsltTopLevelsHash, name, URI); | |
| 1867 | |
| 1868 xmlMutexUnlock(xsltExtMutex); | |
| 1869 | |
| 1870 /* if lookup fails, attempt a dynamic load on supported platforms */ | |
| 1871 if (NULL == ret) { | |
| 1872 if (!xsltExtModuleRegisterDynamic(URI)) { | |
| 1873 xmlMutexLock(xsltExtMutex); | |
| 1874 | |
| 1875 XML_CAST_FPTR(ret) = xmlHashLookup2(xsltTopLevelsHash, name, URI); | |
| 1876 | |
| 1877 xmlMutexUnlock(xsltExtMutex); | |
| 1878 } | |
| 1879 } | |
| 1880 | |
| 1881 return (ret); | |
| 1882 } | |
| 1883 | |
| 1884 /** | |
| 1885 * xsltUnregisterExtModuleTopLevel: | |
| 1886 * @name: the top-level element name | |
| 1887 * @URI: the top-level element namespace URI | |
| 1888 * | |
| 1889 * Unregisters an extension module top-level element | |
| 1890 * | |
| 1891 * Returns 0 if successful, -1 in case of error. | |
| 1892 */ | |
| 1893 int | |
| 1894 xsltUnregisterExtModuleTopLevel(const xmlChar * name, const xmlChar * URI) | |
| 1895 { | |
| 1896 int ret; | |
| 1897 | |
| 1898 if ((xsltTopLevelsHash == NULL) || (name == NULL) || (URI == NULL)) | |
| 1899 return (-1); | |
| 1900 | |
| 1901 xmlMutexLock(xsltExtMutex); | |
| 1902 | |
| 1903 ret = xmlHashRemoveEntry2(xsltTopLevelsHash, name, URI, NULL); | |
| 1904 | |
| 1905 xmlMutexUnlock(xsltExtMutex); | |
| 1906 | |
| 1907 return(ret); | |
| 1908 } | |
| 1909 | |
| 1910 /** | |
| 1911 * xsltUnregisterAllExtModuleTopLevel: | |
| 1912 * | |
| 1913 * Unregisters all extension module function | |
| 1914 */ | |
| 1915 static void | |
| 1916 xsltUnregisterAllExtModuleTopLevel(void) | |
| 1917 { | |
| 1918 xmlMutexLock(xsltExtMutex); | |
| 1919 | |
| 1920 xmlHashFree(xsltTopLevelsHash, NULL); | |
| 1921 xsltTopLevelsHash = NULL; | |
| 1922 | |
| 1923 xmlMutexUnlock(xsltExtMutex); | |
| 1924 } | |
| 1925 | |
| 1926 /** | |
| 1927 * xsltGetExtInfo: | |
| 1928 * @style: pointer to a stylesheet | |
| 1929 * @URI: the namespace URI desired | |
| 1930 * | |
| 1931 * looks up URI in extInfos of the stylesheet | |
| 1932 * | |
| 1933 * returns a pointer to the hash table if found, else NULL | |
| 1934 */ | |
| 1935 xmlHashTablePtr | |
| 1936 xsltGetExtInfo(xsltStylesheetPtr style, const xmlChar * URI) | |
| 1937 { | |
| 1938 xsltExtDataPtr data; | |
| 1939 | |
| 1940 /* | |
| 1941 * TODO: Why do we have a return type of xmlHashTablePtr? | |
| 1942 * Is the user-allocated data for extension modules expected | |
| 1943 * to be a xmlHashTablePtr only? Or is this intended for | |
| 1944 * the EXSLT module only? | |
| 1945 */ | |
| 1946 | |
| 1947 if (style != NULL && style->extInfos != NULL) { | |
| 1948 data = xmlHashLookup(style->extInfos, URI); | |
| 1949 if (data != NULL && data->extData != NULL) | |
| 1950 return data->extData; | |
| 1951 } | |
| 1952 return NULL; | |
| 1953 } | |
| 1954 | |
| 1955 /************************************************************************ | |
| 1956 * * | |
| 1957 * Test module http://xmlsoft.org/XSLT/ * | |
| 1958 * * | |
| 1959 ************************************************************************/ | |
| 1960 | |
| 1961 /************************************************************************ | |
| 1962 * * | |
| 1963 * Test of the extension module API * | |
| 1964 * * | |
| 1965 ************************************************************************/ | |
| 1966 | |
| 1967 static xmlChar *testData = NULL; | |
| 1968 static xmlChar *testStyleData = NULL; | |
| 1969 | |
| 1970 /** | |
| 1971 * xsltExtFunctionTest: | |
| 1972 * @ctxt: the XPath Parser context | |
| 1973 * @nargs: the number of arguments | |
| 1974 * | |
| 1975 * function libxslt:test() for testing the extensions support. | |
| 1976 */ | |
| 1977 static void | |
| 1978 xsltExtFunctionTest(xmlXPathParserContextPtr ctxt, | |
| 1979 int nargs ATTRIBUTE_UNUSED) | |
| 1980 { | |
| 1981 xsltTransformContextPtr tctxt; | |
| 1982 void *data = NULL; | |
| 1983 | |
| 1984 tctxt = xsltXPathGetTransformContext(ctxt); | |
| 1985 | |
| 1986 if (testData == NULL) { | |
| 1987 xsltGenericDebug(xsltGenericDebugContext, | |
| 1988 "xsltExtFunctionTest: not initialized," | |
| 1989 " calling xsltGetExtData\n"); | |
| 1990 data = xsltGetExtData(tctxt, (const xmlChar *) XSLT_DEFAULT_URL); | |
| 1991 if (data == NULL) { | |
| 1992 xsltTransformError(tctxt, NULL, NULL, | |
| 1993 "xsltExtElementTest: not initialized\n"); | |
| 1994 return; | |
| 1995 } | |
| 1996 } | |
| 1997 if (tctxt == NULL) { | |
| 1998 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 1999 "xsltExtFunctionTest: failed to get the transformatio
n context\n"); | |
| 2000 return; | |
| 2001 } | |
| 2002 if (data == NULL) | |
| 2003 data = xsltGetExtData(tctxt, (const xmlChar *) XSLT_DEFAULT_URL); | |
| 2004 if (data == NULL) { | |
| 2005 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 2006 "xsltExtFunctionTest: failed to get module data\n"); | |
| 2007 return; | |
| 2008 } | |
| 2009 if (data != testData) { | |
| 2010 xsltTransformError(xsltXPathGetTransformContext(ctxt), NULL, NULL, | |
| 2011 "xsltExtFunctionTest: got wrong module data\n"); | |
| 2012 return; | |
| 2013 } | |
| 2014 #ifdef WITH_XSLT_DEBUG_FUNCTION | |
| 2015 xsltGenericDebug(xsltGenericDebugContext, | |
| 2016 "libxslt:test() called with %d args\n", nargs); | |
| 2017 #endif | |
| 2018 } | |
| 2019 | |
| 2020 /** | |
| 2021 * xsltExtElementPreCompTest: | |
| 2022 * @style: the stylesheet | |
| 2023 * @inst: the instruction in the stylesheet | |
| 2024 * | |
| 2025 * Process a libxslt:test node | |
| 2026 */ | |
| 2027 static xsltElemPreCompPtr | |
| 2028 xsltExtElementPreCompTest(xsltStylesheetPtr style, xmlNodePtr inst, | |
| 2029 xsltTransformFunction function) | |
| 2030 { | |
| 2031 xsltElemPreCompPtr ret; | |
| 2032 | |
| 2033 if (style == NULL) { | |
| 2034 xsltTransformError(NULL, NULL, inst, | |
| 2035 "xsltExtElementTest: no transformation context\n"); | |
| 2036 return (NULL); | |
| 2037 } | |
| 2038 if (testStyleData == NULL) { | |
| 2039 xsltGenericDebug(xsltGenericDebugContext, | |
| 2040 "xsltExtElementPreCompTest: not initialized," | |
| 2041 " calling xsltStyleGetExtData\n"); | |
| 2042 xsltStyleGetExtData(style, (const xmlChar *) XSLT_DEFAULT_URL); | |
| 2043 if (testStyleData == NULL) { | |
| 2044 xsltTransformError(NULL, style, inst, | |
| 2045 "xsltExtElementPreCompTest: not initialized\n"); | |
| 2046 if (style != NULL) | |
| 2047 style->errors++; | |
| 2048 return (NULL); | |
| 2049 } | |
| 2050 } | |
| 2051 if (inst == NULL) { | |
| 2052 xsltTransformError(NULL, style, inst, | |
| 2053 "xsltExtElementPreCompTest: no instruction\n"); | |
| 2054 if (style != NULL) | |
| 2055 style->errors++; | |
| 2056 return (NULL); | |
| 2057 } | |
| 2058 ret = xsltNewElemPreComp(style, inst, function); | |
| 2059 return (ret); | |
| 2060 } | |
| 2061 | |
| 2062 /** | |
| 2063 * xsltExtElementTest: | |
| 2064 * @ctxt: an XSLT processing context | |
| 2065 * @node: The current node | |
| 2066 * @inst: the instruction in the stylesheet | |
| 2067 * @comp: precomputed informations | |
| 2068 * | |
| 2069 * Process a libxslt:test node | |
| 2070 */ | |
| 2071 static void | |
| 2072 xsltExtElementTest(xsltTransformContextPtr ctxt, xmlNodePtr node, | |
| 2073 xmlNodePtr inst, | |
| 2074 xsltElemPreCompPtr comp ATTRIBUTE_UNUSED) | |
| 2075 { | |
| 2076 xmlNodePtr commentNode; | |
| 2077 | |
| 2078 if (testData == NULL) { | |
| 2079 xsltGenericDebug(xsltGenericDebugContext, | |
| 2080 "xsltExtElementTest: not initialized," | |
| 2081 " calling xsltGetExtData\n"); | |
| 2082 xsltGetExtData(ctxt, (const xmlChar *) XSLT_DEFAULT_URL); | |
| 2083 if (testData == NULL) { | |
| 2084 xsltTransformError(ctxt, NULL, inst, | |
| 2085 "xsltExtElementTest: not initialized\n"); | |
| 2086 return; | |
| 2087 } | |
| 2088 } | |
| 2089 if (ctxt == NULL) { | |
| 2090 xsltTransformError(ctxt, NULL, inst, | |
| 2091 "xsltExtElementTest: no transformation context\n"); | |
| 2092 return; | |
| 2093 } | |
| 2094 if (node == NULL) { | |
| 2095 xsltTransformError(ctxt, NULL, inst, | |
| 2096 "xsltExtElementTest: no current node\n"); | |
| 2097 return; | |
| 2098 } | |
| 2099 if (inst == NULL) { | |
| 2100 xsltTransformError(ctxt, NULL, inst, | |
| 2101 "xsltExtElementTest: no instruction\n"); | |
| 2102 return; | |
| 2103 } | |
| 2104 if (ctxt->insert == NULL) { | |
| 2105 xsltTransformError(ctxt, NULL, inst, | |
| 2106 "xsltExtElementTest: no insertion point\n"); | |
| 2107 return; | |
| 2108 } | |
| 2109 commentNode = xmlNewComment((const xmlChar *) | |
| 2110 "libxslt:test element test worked"); | |
| 2111 xmlAddChild(ctxt->insert, commentNode); | |
| 2112 } | |
| 2113 | |
| 2114 /** | |
| 2115 * xsltExtInitTest: | |
| 2116 * @ctxt: an XSLT transformation context | |
| 2117 * @URI: the namespace URI for the extension | |
| 2118 * | |
| 2119 * A function called at initialization time of an XSLT extension module | |
| 2120 * | |
| 2121 * Returns a pointer to the module specific data for this transformation | |
| 2122 */ | |
| 2123 static void * | |
| 2124 xsltExtInitTest(xsltTransformContextPtr ctxt, const xmlChar * URI) | |
| 2125 { | |
| 2126 if (testStyleData == NULL) { | |
| 2127 xsltGenericDebug(xsltGenericErrorContext, | |
| 2128 "xsltExtInitTest: not initialized," | |
| 2129 " calling xsltStyleGetExtData\n"); | |
| 2130 testStyleData = xsltStyleGetExtData(ctxt->style, URI); | |
| 2131 if (testStyleData == NULL) { | |
| 2132 xsltTransformError(ctxt, NULL, NULL, | |
| 2133 "xsltExtInitTest: not initialized\n"); | |
| 2134 return (NULL); | |
| 2135 } | |
| 2136 } | |
| 2137 if (testData != NULL) { | |
| 2138 xsltTransformError(ctxt, NULL, NULL, | |
| 2139 "xsltExtInitTest: already initialized\n"); | |
| 2140 return (NULL); | |
| 2141 } | |
| 2142 testData = (void *) "test data"; | |
| 2143 xsltGenericDebug(xsltGenericDebugContext, | |
| 2144 "Registered test module : %s\n", URI); | |
| 2145 return (testData); | |
| 2146 } | |
| 2147 | |
| 2148 | |
| 2149 /** | |
| 2150 * xsltExtShutdownTest: | |
| 2151 * @ctxt: an XSLT transformation context | |
| 2152 * @URI: the namespace URI for the extension | |
| 2153 * @data: the data associated to this module | |
| 2154 * | |
| 2155 * A function called at shutdown time of an XSLT extension module | |
| 2156 */ | |
| 2157 static void | |
| 2158 xsltExtShutdownTest(xsltTransformContextPtr ctxt, | |
| 2159 const xmlChar * URI, void *data) | |
| 2160 { | |
| 2161 if (testData == NULL) { | |
| 2162 xsltTransformError(ctxt, NULL, NULL, | |
| 2163 "xsltExtShutdownTest: not initialized\n"); | |
| 2164 return; | |
| 2165 } | |
| 2166 if (data != testData) { | |
| 2167 xsltTransformError(ctxt, NULL, NULL, | |
| 2168 "xsltExtShutdownTest: wrong data\n"); | |
| 2169 } | |
| 2170 testData = NULL; | |
| 2171 xsltGenericDebug(xsltGenericDebugContext, | |
| 2172 "Unregistered test module : %s\n", URI); | |
| 2173 } | |
| 2174 | |
| 2175 /** | |
| 2176 * xsltExtStyleInitTest: | |
| 2177 * @style: an XSLT stylesheet | |
| 2178 * @URI: the namespace URI for the extension | |
| 2179 * | |
| 2180 * A function called at initialization time of an XSLT extension module | |
| 2181 * | |
| 2182 * Returns a pointer to the module specific data for this transformation | |
| 2183 */ | |
| 2184 static void * | |
| 2185 xsltExtStyleInitTest(xsltStylesheetPtr style ATTRIBUTE_UNUSED, | |
| 2186 const xmlChar * URI) | |
| 2187 { | |
| 2188 if (testStyleData != NULL) { | |
| 2189 xsltTransformError(NULL, NULL, NULL, | |
| 2190 "xsltExtInitTest: already initialized\n"); | |
| 2191 return (NULL); | |
| 2192 } | |
| 2193 testStyleData = (void *) "test data"; | |
| 2194 xsltGenericDebug(xsltGenericDebugContext, | |
| 2195 "Registered test module : %s\n", URI); | |
| 2196 return (testStyleData); | |
| 2197 } | |
| 2198 | |
| 2199 | |
| 2200 /** | |
| 2201 * xsltExtStyleShutdownTest: | |
| 2202 * @style: an XSLT stylesheet | |
| 2203 * @URI: the namespace URI for the extension | |
| 2204 * @data: the data associated to this module | |
| 2205 * | |
| 2206 * A function called at shutdown time of an XSLT extension module | |
| 2207 */ | |
| 2208 static void | |
| 2209 xsltExtStyleShutdownTest(xsltStylesheetPtr style ATTRIBUTE_UNUSED, | |
| 2210 const xmlChar * URI, void *data) | |
| 2211 { | |
| 2212 if (testStyleData == NULL) { | |
| 2213 xsltGenericError(xsltGenericErrorContext, | |
| 2214 "xsltExtShutdownTest: not initialized\n"); | |
| 2215 return; | |
| 2216 } | |
| 2217 if (data != testStyleData) { | |
| 2218 xsltTransformError(NULL, NULL, NULL, | |
| 2219 "xsltExtShutdownTest: wrong data\n"); | |
| 2220 } | |
| 2221 testStyleData = NULL; | |
| 2222 xsltGenericDebug(xsltGenericDebugContext, | |
| 2223 "Unregistered test module : %s\n", URI); | |
| 2224 } | |
| 2225 | |
| 2226 /** | |
| 2227 * xsltRegisterTestModule: | |
| 2228 * | |
| 2229 * Registers the test module | |
| 2230 */ | |
| 2231 void | |
| 2232 xsltRegisterTestModule(void) | |
| 2233 { | |
| 2234 xsltInitGlobals(); | |
| 2235 xsltRegisterExtModuleFull((const xmlChar *) XSLT_DEFAULT_URL, | |
| 2236 xsltExtInitTest, xsltExtShutdownTest, | |
| 2237 xsltExtStyleInitTest, | |
| 2238 xsltExtStyleShutdownTest); | |
| 2239 xsltRegisterExtModuleFunction((const xmlChar *) "test", | |
| 2240 (const xmlChar *) XSLT_DEFAULT_URL, | |
| 2241 xsltExtFunctionTest); | |
| 2242 xsltRegisterExtModuleElement((const xmlChar *) "test", | |
| 2243 (const xmlChar *) XSLT_DEFAULT_URL, | |
| 2244 xsltExtElementPreCompTest, | |
| 2245 xsltExtElementTest); | |
| 2246 } | |
| 2247 | |
| 2248 static void | |
| 2249 xsltHashScannerModuleFree(void *payload ATTRIBUTE_UNUSED, | |
| 2250 void *data ATTRIBUTE_UNUSED, | |
| 2251 xmlChar * name ATTRIBUTE_UNUSED) | |
| 2252 { | |
| 2253 #ifdef WITH_MODULES | |
| 2254 xmlModuleClose(payload); | |
| 2255 #endif | |
| 2256 } | |
| 2257 | |
| 2258 /** | |
| 2259 * xsltInitGlobals: | |
| 2260 * | |
| 2261 * Initialize the global variables for extensions | |
| 2262 */ | |
| 2263 void | |
| 2264 xsltInitGlobals(void) | |
| 2265 { | |
| 2266 if (xsltExtMutex == NULL) { | |
| 2267 xsltExtMutex = xmlNewMutex(); | |
| 2268 } | |
| 2269 } | |
| 2270 | |
| 2271 /** | |
| 2272 * xsltCleanupGlobals: | |
| 2273 * | |
| 2274 * Unregister all global variables set up by the XSLT library | |
| 2275 */ | |
| 2276 void | |
| 2277 xsltCleanupGlobals(void) | |
| 2278 { | |
| 2279 xsltUnregisterAllExtModules(); | |
| 2280 xsltUnregisterAllExtModuleFunction(); | |
| 2281 xsltUnregisterAllExtModuleElement(); | |
| 2282 xsltUnregisterAllExtModuleTopLevel(); | |
| 2283 | |
| 2284 xmlMutexLock(xsltExtMutex); | |
| 2285 /* cleanup dynamic module hash */ | |
| 2286 if (NULL != xsltModuleHash) { | |
| 2287 xmlHashScan(xsltModuleHash, xsltHashScannerModuleFree, 0); | |
| 2288 xmlHashFree(xsltModuleHash, NULL); | |
| 2289 xsltModuleHash = NULL; | |
| 2290 } | |
| 2291 xmlMutexUnlock(xsltExtMutex); | |
| 2292 | |
| 2293 xmlFreeMutex(xsltExtMutex); | |
| 2294 xsltExtMutex = NULL; | |
| 2295 xsltFreeLocales(); | |
| 2296 xsltUninit(); | |
| 2297 } | |
| 2298 | |
| 2299 static void | |
| 2300 xsltDebugDumpExtensionsCallback(void *function ATTRIBUTE_UNUSED, | |
| 2301 FILE * output, const xmlChar * name, | |
| 2302 const xmlChar * URI, | |
| 2303 const xmlChar * not_used ATTRIBUTE_UNUSED) | |
| 2304 { | |
| 2305 if (!name || !URI) | |
| 2306 return; | |
| 2307 fprintf(output, "{%s}%s\n", URI, name); | |
| 2308 } | |
| 2309 | |
| 2310 static void | |
| 2311 xsltDebugDumpExtModulesCallback(void *function ATTRIBUTE_UNUSED, | |
| 2312 FILE * output, const xmlChar * URI, | |
| 2313 const xmlChar * not_used ATTRIBUTE_UNUSED, | |
| 2314 const xmlChar * not_used2 ATTRIBUTE_UNUSED) | |
| 2315 { | |
| 2316 if (!URI) | |
| 2317 return; | |
| 2318 fprintf(output, "%s\n", URI); | |
| 2319 } | |
| 2320 | |
| 2321 /** | |
| 2322 * xsltDebugDumpExtensions: | |
| 2323 * @output: the FILE * for the output, if NULL stdout is used | |
| 2324 * | |
| 2325 * Dumps a list of the registered XSLT extension functions and elements | |
| 2326 */ | |
| 2327 void | |
| 2328 xsltDebugDumpExtensions(FILE * output) | |
| 2329 { | |
| 2330 if (output == NULL) | |
| 2331 output = stdout; | |
| 2332 fprintf(output, | |
| 2333 "Registered XSLT Extensions\n--------------------------\n"); | |
| 2334 if (!xsltFunctionsHash) | |
| 2335 fprintf(output, "No registered extension functions\n"); | |
| 2336 else { | |
| 2337 fprintf(output, "Registered Extension Functions:\n"); | |
| 2338 xmlMutexLock(xsltExtMutex); | |
| 2339 xmlHashScanFull(xsltFunctionsHash, | |
| 2340 (xmlHashScannerFull) | |
| 2341 xsltDebugDumpExtensionsCallback, output); | |
| 2342 xmlMutexUnlock(xsltExtMutex); | |
| 2343 } | |
| 2344 if (!xsltElementsHash) | |
| 2345 fprintf(output, "\nNo registered extension elements\n"); | |
| 2346 else { | |
| 2347 fprintf(output, "\nRegistered Extension Elements:\n"); | |
| 2348 xmlMutexLock(xsltExtMutex); | |
| 2349 xmlHashScanFull(xsltElementsHash, | |
| 2350 (xmlHashScannerFull) | |
| 2351 xsltDebugDumpExtensionsCallback, output); | |
| 2352 xmlMutexUnlock(xsltExtMutex); | |
| 2353 } | |
| 2354 if (!xsltExtensionsHash) | |
| 2355 fprintf(output, "\nNo registered extension modules\n"); | |
| 2356 else { | |
| 2357 fprintf(output, "\nRegistered Extension Modules:\n"); | |
| 2358 xmlMutexLock(xsltExtMutex); | |
| 2359 xmlHashScanFull(xsltExtensionsHash, | |
| 2360 (xmlHashScannerFull) | |
| 2361 xsltDebugDumpExtModulesCallback, output); | |
| 2362 xmlMutexUnlock(xsltExtMutex); | |
| 2363 } | |
| 2364 | |
| 2365 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2865973002:
Check in the libxslt roll script. (Closed)
