Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 1 | /* |
| 2 | * schemas.c : implementation of the Schematron schema validity checking |
| 3 | * |
| 4 | * See Copyright for the status of this software. |
| 5 | * |
| 6 | * Daniel Veillard <veillard@redhat.com> |
| 7 | */ |
| 8 | |
| 9 | #define IN_LIBXML |
| 10 | #include "libxml.h" |
| 11 | |
| 12 | #ifdef LIBXML_SCHEMATRON_ENABLED |
| 13 | |
| 14 | #include <string.h> |
| 15 | #include <libxml/parser.h> |
| 16 | #include <libxml/tree.h> |
| 17 | #include <libxml/uri.h> |
| 18 | #include <libxml/xpath.h> |
| 19 | #include <libxml/xpathInternals.h> |
| 20 | #include <libxml/pattern.h> |
| 21 | #include <libxml/schematron.h> |
| 22 | |
| 23 | #define SCHEMATRON_PARSE_OPTIONS XML_PARSE_NOENT |
| 24 | |
| 25 | static const xmlChar *xmlSchematronNs = XML_SCHEMATRON_NS; |
| 26 | |
| 27 | #define IS_SCHEMATRON(node, elem) \ |
| 28 | ((node != NULL) && (node->type == XML_ELEMENT_NODE ) && \ |
| 29 | (node->ns != NULL) && \ |
| 30 | (xmlStrEqual(node->name, (const xmlChar *) elem)) && \ |
| 31 | (xmlStrEqual(node->ns->href, xmlSchematronNs))) |
| 32 | |
| 33 | #define NEXT_SCHEMATRON(node) \ |
| 34 | while (node != NULL) { \ |
| 35 | if ((node->type == XML_ELEMENT_NODE ) && (node->ns != NULL) && \ |
| 36 | (xmlStrEqual(node->ns->href, xmlSchematronNs))) \ |
| 37 | break; \ |
| 38 | node = node->next; \ |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * TODO: |
| 43 | * |
| 44 | * macro to flag unimplemented blocks |
| 45 | */ |
| 46 | #define TODO \ |
| 47 | xmlGenericError(xmlGenericErrorContext, \ |
| 48 | "Unimplemented block at %s:%d\n", \ |
| 49 | __FILE__, __LINE__); |
| 50 | |
| 51 | #define XML_SCHEMATRON_ASSERT 0 |
| 52 | #define XML_SCHEMATRON_REPORT 1 |
| 53 | /** |
| 54 | * _xmlSchematronTest: |
| 55 | * |
| 56 | * A Schematrons test, either an assert or a report |
| 57 | */ |
| 58 | typedef struct _xmlSchematronTest xmlSchematronTest; |
| 59 | typedef xmlSchematronTest *xmlSchematronTestPtr; |
| 60 | struct _xmlSchematronTest { |
| 61 | xmlSchematronTestPtr next; /* the next test in the list */ |
| 62 | int type; /* 0 for assert, 1 for report */ |
| 63 | xmlNodePtr node; /* the node in the tree */ |
| 64 | xmlChar *test; /* the expression to test */ |
| 65 | xmlXPathCompExprPtr comp; /* the compiled expression */ |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 66 | xmlChar *report; /* the message to report */ |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 67 | }; |
| 68 | |
| 69 | /** |
| 70 | * _xmlSchematronRule: |
| 71 | * |
| 72 | * A Schematrons rule |
| 73 | */ |
| 74 | typedef struct _xmlSchematronRule xmlSchematronRule; |
| 75 | typedef xmlSchematronRule *xmlSchematronRulePtr; |
| 76 | struct _xmlSchematronRule { |
| 77 | xmlSchematronRulePtr next; /* the next rule in the list */ |
| 78 | xmlNodePtr node; /* the node in the tree */ |
| 79 | xmlChar *context; /* the context evaluation rule */ |
| 80 | xmlSchematronTestPtr tests; /* the list of tests */ |
| 81 | xmlPatternPtr pattern; /* the compiled pattern associated */ |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 82 | xmlChar *report; /* the message to report */ |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 83 | }; |
| 84 | |
| 85 | /** |
| 86 | * _xmlSchematron: |
| 87 | * |
| 88 | * A Schematrons definition |
| 89 | */ |
| 90 | struct _xmlSchematron { |
| 91 | const xmlChar *name; /* schema name */ |
| 92 | int preserve; /* was the document preserved by the user */ |
| 93 | xmlDocPtr doc; /* pointer to the parsed document */ |
| 94 | int flags; /* specific to this schematron */ |
| 95 | |
| 96 | void *_private; /* unused by the library */ |
| 97 | xmlDictPtr dict; /* the dictionnary used internally */ |
| 98 | |
| 99 | const xmlChar *title; /* the title if any */ |
| 100 | |
| 101 | int nbNs; /* the number of namespaces */ |
| 102 | |
| 103 | int nbPattern; /* the number of patterns */ |
| 104 | xmlSchematronRulePtr rules; /* the rules gathered */ |
| 105 | int nbNamespaces; /* number of namespaces in the array */ |
| 106 | int maxNamespaces; /* size of the array */ |
| 107 | const xmlChar **namespaces; /* the array of namespaces */ |
| 108 | }; |
| 109 | |
| 110 | /** |
| 111 | * xmlSchematronValidCtxt: |
| 112 | * |
| 113 | * A Schematrons validation context |
| 114 | */ |
| 115 | struct _xmlSchematronValidCtxt { |
| 116 | int type; |
| 117 | int flags; /* an or of xmlSchematronValidOptions */ |
| 118 | |
| 119 | xmlDictPtr dict; |
| 120 | int nberrors; |
| 121 | int err; |
| 122 | |
| 123 | xmlSchematronPtr schema; |
| 124 | xmlXPathContextPtr xctxt; |
| 125 | |
| 126 | FILE *outputFile; /* if using XML_SCHEMATRON_OUT_FILE */ |
| 127 | xmlBufferPtr outputBuffer; /* if using XML_SCHEMATRON_OUT_BUFFER */ |
| 128 | xmlOutputWriteCallback iowrite; /* if using XML_SCHEMATRON_OUT_IO */ |
| 129 | xmlOutputCloseCallback ioclose; |
| 130 | void *ioctx; |
| 131 | }; |
| 132 | |
| 133 | struct _xmlSchematronParserCtxt { |
| 134 | int type; |
| 135 | const xmlChar *URL; |
| 136 | xmlDocPtr doc; |
| 137 | int preserve; /* Whether the doc should be freed */ |
| 138 | const char *buffer; |
| 139 | int size; |
| 140 | |
| 141 | xmlDictPtr dict; /* dictionnary for interned string names */ |
| 142 | |
| 143 | int nberrors; |
| 144 | int err; |
| 145 | xmlXPathContextPtr xctxt; /* the XPath context used for compilation */ |
| 146 | xmlSchematronPtr schema; |
| 147 | |
| 148 | int nbNamespaces; /* number of namespaces in the array */ |
| 149 | int maxNamespaces; /* size of the array */ |
| 150 | const xmlChar **namespaces; /* the array of namespaces */ |
| 151 | |
| 152 | int nbIncludes; /* number of includes in the array */ |
| 153 | int maxIncludes; /* size of the array */ |
| 154 | xmlNodePtr *includes; /* the array of includes */ |
| 155 | |
| 156 | /* error rreporting data */ |
| 157 | void *userData; /* user specific data block */ |
| 158 | xmlSchematronValidityErrorFunc error;/* the callback in case of errors */ |
| 159 | xmlSchematronValidityWarningFunc warning;/* callback in case of warning */ |
| 160 | xmlStructuredErrorFunc serror; /* the structured function */ |
| 161 | |
| 162 | }; |
| 163 | |
| 164 | #define XML_STRON_CTXT_PARSER 1 |
| 165 | #define XML_STRON_CTXT_VALIDATOR 2 |
| 166 | |
| 167 | /************************************************************************ |
| 168 | * * |
| 169 | * Error reporting * |
| 170 | * * |
| 171 | ************************************************************************/ |
| 172 | |
| 173 | /** |
| 174 | * xmlSchematronPErrMemory: |
| 175 | * @node: a context node |
| 176 | * @extra: extra informations |
| 177 | * |
| 178 | * Handle an out of memory condition |
| 179 | */ |
| 180 | static void |
| 181 | xmlSchematronPErrMemory(xmlSchematronParserCtxtPtr ctxt, |
| 182 | const char *extra, xmlNodePtr node) |
| 183 | { |
| 184 | if (ctxt != NULL) |
| 185 | ctxt->nberrors++; |
| 186 | __xmlSimpleError(XML_FROM_SCHEMASP, XML_ERR_NO_MEMORY, node, NULL, |
| 187 | extra); |
| 188 | } |
| 189 | |
| 190 | /** |
| 191 | * xmlSchematronPErr: |
| 192 | * @ctxt: the parsing context |
| 193 | * @node: the context node |
| 194 | * @error: the error code |
| 195 | * @msg: the error message |
| 196 | * @str1: extra data |
| 197 | * @str2: extra data |
| 198 | * |
| 199 | * Handle a parser error |
| 200 | */ |
| 201 | static void |
| 202 | xmlSchematronPErr(xmlSchematronParserCtxtPtr ctxt, xmlNodePtr node, int error, |
| 203 | const char *msg, const xmlChar * str1, const xmlChar * str2) |
| 204 | { |
| 205 | xmlGenericErrorFunc channel = NULL; |
| 206 | xmlStructuredErrorFunc schannel = NULL; |
| 207 | void *data = NULL; |
| 208 | |
| 209 | if (ctxt != NULL) { |
| 210 | ctxt->nberrors++; |
| 211 | channel = ctxt->error; |
| 212 | data = ctxt->userData; |
| 213 | schannel = ctxt->serror; |
| 214 | } |
| 215 | __xmlRaiseError(schannel, channel, data, ctxt, node, XML_FROM_SCHEMASP, |
| 216 | error, XML_ERR_ERROR, NULL, 0, |
| 217 | (const char *) str1, (const char *) str2, NULL, 0, 0, |
| 218 | msg, str1, str2); |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * xmlSchematronVTypeErrMemory: |
| 223 | * @node: a context node |
| 224 | * @extra: extra informations |
| 225 | * |
| 226 | * Handle an out of memory condition |
| 227 | */ |
| 228 | static void |
| 229 | xmlSchematronVErrMemory(xmlSchematronValidCtxtPtr ctxt, |
| 230 | const char *extra, xmlNodePtr node) |
| 231 | { |
| 232 | if (ctxt != NULL) { |
| 233 | ctxt->nberrors++; |
| 234 | ctxt->err = XML_SCHEMAV_INTERNAL; |
| 235 | } |
| 236 | __xmlSimpleError(XML_FROM_SCHEMASV, XML_ERR_NO_MEMORY, node, NULL, |
| 237 | extra); |
| 238 | } |
| 239 | |
| 240 | /************************************************************************ |
| 241 | * * |
| 242 | * Parsing and compilation of the Schematrontrons * |
| 243 | * * |
| 244 | ************************************************************************/ |
| 245 | |
| 246 | /** |
| 247 | * xmlSchematronAddTest: |
| 248 | * @ctxt: the schema parsing context |
| 249 | * @schema: a schema structure |
| 250 | * @node: the node hosting the test |
| 251 | * @context: the associated context string |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 252 | * @report: the associated report string |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 253 | * |
| 254 | * Add a test to a schematron |
| 255 | * |
| 256 | * Returns the new pointer or NULL in case of error |
| 257 | */ |
| 258 | static xmlSchematronTestPtr |
| 259 | xmlSchematronAddTest(xmlSchematronParserCtxtPtr ctxt, int type, |
| 260 | xmlSchematronRulePtr rule, |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 261 | xmlNodePtr node, xmlChar *test, xmlChar *report) |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 262 | { |
| 263 | xmlSchematronTestPtr ret; |
| 264 | xmlXPathCompExprPtr comp; |
| 265 | |
| 266 | if ((ctxt == NULL) || (rule == NULL) || (node == NULL) || |
| 267 | (test == NULL)) |
| 268 | return(NULL); |
| 269 | |
| 270 | /* |
| 271 | * try first to compile the test expression |
| 272 | */ |
| 273 | comp = xmlXPathCtxtCompile(ctxt->xctxt, test); |
| 274 | if (comp == NULL) { |
| 275 | xmlSchematronPErr(ctxt, node, |
| 276 | XML_SCHEMAP_NOROOT, |
| 277 | "Failed to compile test expression %s", |
| 278 | test, NULL); |
| 279 | return(NULL); |
| 280 | } |
| 281 | |
| 282 | ret = (xmlSchematronTestPtr) xmlMalloc(sizeof(xmlSchematronTest)); |
| 283 | if (ret == NULL) { |
| 284 | xmlSchematronPErrMemory(ctxt, "allocating schema test", node); |
| 285 | return (NULL); |
| 286 | } |
| 287 | memset(ret, 0, sizeof(xmlSchematronTest)); |
| 288 | ret->type = type; |
| 289 | ret->node = node; |
| 290 | ret->test = test; |
| 291 | ret->comp = comp; |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 292 | ret->report = report; |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 293 | ret->next = rule->tests; |
| 294 | rule->tests = ret; |
| 295 | return (ret); |
| 296 | } |
| 297 | |
| 298 | /** |
| 299 | * xmlSchematronFreeTests: |
| 300 | * @tests: a list of tests |
| 301 | * |
| 302 | * Free a list of tests. |
| 303 | */ |
| 304 | static void |
| 305 | xmlSchematronFreeTests(xmlSchematronTestPtr tests) { |
| 306 | xmlSchematronTestPtr next; |
| 307 | |
| 308 | while (tests != NULL) { |
| 309 | next = tests->next; |
| 310 | if (tests->test != NULL) |
| 311 | xmlFree(tests->test); |
| 312 | if (tests->comp != NULL) |
| 313 | xmlXPathFreeCompExpr(tests->comp); |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 314 | if (tests->report != NULL) |
| 315 | xmlFree(tests->report); |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 316 | xmlFree(tests); |
| 317 | tests = next; |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | /** |
| 322 | * xmlSchematronAddRule: |
| 323 | * @ctxt: the schema parsing context |
| 324 | * @schema: a schema structure |
| 325 | * @node: the node hosting the rule |
| 326 | * @context: the associated context string |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 327 | * @report: the associated report string |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 328 | * |
| 329 | * Add a rule to a schematron |
| 330 | * |
| 331 | * Returns the new pointer or NULL in case of error |
| 332 | */ |
| 333 | static xmlSchematronRulePtr |
| 334 | xmlSchematronAddRule(xmlSchematronParserCtxtPtr ctxt, xmlSchematronPtr schema, |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 335 | xmlNodePtr node, xmlChar *context, xmlChar *report) |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 336 | { |
| 337 | xmlSchematronRulePtr ret; |
| 338 | xmlPatternPtr pattern; |
| 339 | |
| 340 | if ((ctxt == NULL) || (schema == NULL) || (node == NULL) || |
| 341 | (context == NULL)) |
| 342 | return(NULL); |
| 343 | |
| 344 | /* |
| 345 | * Try first to compile the pattern |
| 346 | */ |
| 347 | pattern = xmlPatterncompile(context, ctxt->dict, XML_PATTERN_XPATH, |
| 348 | ctxt->namespaces); |
| 349 | if (pattern == NULL) { |
| 350 | xmlSchematronPErr(ctxt, node, |
| 351 | XML_SCHEMAP_NOROOT, |
| 352 | "Failed to compile context expression %s", |
| 353 | context, NULL); |
| 354 | } |
| 355 | |
| 356 | ret = (xmlSchematronRulePtr) xmlMalloc(sizeof(xmlSchematronRule)); |
| 357 | if (ret == NULL) { |
| 358 | xmlSchematronPErrMemory(ctxt, "allocating schema rule", node); |
| 359 | return (NULL); |
| 360 | } |
| 361 | memset(ret, 0, sizeof(xmlSchematronRule)); |
| 362 | ret->node = node; |
| 363 | ret->context = context; |
| 364 | ret->next = schema->rules; |
| 365 | ret->pattern = pattern; |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 366 | ret->report = report; |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 367 | schema->rules = ret; |
| 368 | return (ret); |
| 369 | } |
| 370 | |
| 371 | /** |
| 372 | * xmlSchematronFreeRules: |
| 373 | * @rules: a list of rules |
| 374 | * |
| 375 | * Free a list of rules. |
| 376 | */ |
| 377 | static void |
| 378 | xmlSchematronFreeRules(xmlSchematronRulePtr rules) { |
| 379 | xmlSchematronRulePtr next; |
| 380 | |
| 381 | while (rules != NULL) { |
| 382 | next = rules->next; |
| 383 | if (rules->tests) |
| 384 | xmlSchematronFreeTests(rules->tests); |
| 385 | if (rules->context != NULL) |
| 386 | xmlFree(rules->context); |
| 387 | if (rules->pattern) |
| 388 | xmlFreePattern(rules->pattern); |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 389 | if (rules->report != NULL) |
| 390 | xmlFree(rules->report); |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 391 | xmlFree(rules); |
| 392 | rules = next; |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | /** |
| 397 | * xmlSchematronNewSchematron: |
| 398 | * @ctxt: a schema validation context |
| 399 | * |
| 400 | * Allocate a new Schematron structure. |
| 401 | * |
| 402 | * Returns the newly allocated structure or NULL in case or error |
| 403 | */ |
| 404 | static xmlSchematronPtr |
| 405 | xmlSchematronNewSchematron(xmlSchematronParserCtxtPtr ctxt) |
| 406 | { |
| 407 | xmlSchematronPtr ret; |
| 408 | |
| 409 | ret = (xmlSchematronPtr) xmlMalloc(sizeof(xmlSchematron)); |
| 410 | if (ret == NULL) { |
| 411 | xmlSchematronPErrMemory(ctxt, "allocating schema", NULL); |
| 412 | return (NULL); |
| 413 | } |
| 414 | memset(ret, 0, sizeof(xmlSchematron)); |
| 415 | ret->dict = ctxt->dict; |
| 416 | xmlDictReference(ret->dict); |
| 417 | |
| 418 | return (ret); |
| 419 | } |
| 420 | |
| 421 | /** |
| 422 | * xmlSchematronFree: |
| 423 | * @schema: a schema structure |
| 424 | * |
| 425 | * Deallocate a Schematron structure. |
| 426 | */ |
| 427 | void |
| 428 | xmlSchematronFree(xmlSchematronPtr schema) |
| 429 | { |
| 430 | if (schema == NULL) |
| 431 | return; |
| 432 | |
| 433 | if ((schema->doc != NULL) && (!(schema->preserve))) |
| 434 | xmlFreeDoc(schema->doc); |
| 435 | |
| 436 | if (schema->namespaces != NULL) |
| 437 | xmlFree(schema->namespaces); |
| 438 | |
| 439 | xmlSchematronFreeRules(schema->rules); |
| 440 | xmlDictFree(schema->dict); |
| 441 | xmlFree(schema); |
| 442 | } |
| 443 | |
| 444 | /** |
| 445 | * xmlSchematronNewParserCtxt: |
| 446 | * @URL: the location of the schema |
| 447 | * |
| 448 | * Create an XML Schematrons parse context for that file/resource expected |
| 449 | * to contain an XML Schematrons file. |
| 450 | * |
| 451 | * Returns the parser context or NULL in case of error |
| 452 | */ |
| 453 | xmlSchematronParserCtxtPtr |
| 454 | xmlSchematronNewParserCtxt(const char *URL) |
| 455 | { |
| 456 | xmlSchematronParserCtxtPtr ret; |
| 457 | |
| 458 | if (URL == NULL) |
| 459 | return (NULL); |
| 460 | |
| 461 | ret = |
| 462 | (xmlSchematronParserCtxtPtr) |
| 463 | xmlMalloc(sizeof(xmlSchematronParserCtxt)); |
| 464 | if (ret == NULL) { |
| 465 | xmlSchematronPErrMemory(NULL, "allocating schema parser context", |
| 466 | NULL); |
| 467 | return (NULL); |
| 468 | } |
| 469 | memset(ret, 0, sizeof(xmlSchematronParserCtxt)); |
| 470 | ret->type = XML_STRON_CTXT_PARSER; |
| 471 | ret->dict = xmlDictCreate(); |
| 472 | ret->URL = xmlDictLookup(ret->dict, (const xmlChar *) URL, -1); |
Daniel Veillard | 24505b0 | 2005-07-28 23:49:35 +0000 | [diff] [blame^] | 473 | ret->includes = NULL; |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 474 | ret->xctxt = xmlXPathNewContext(NULL); |
| 475 | if (ret->xctxt == NULL) { |
| 476 | xmlSchematronPErrMemory(NULL, "allocating schema parser XPath context", |
| 477 | NULL); |
| 478 | xmlSchematronFreeParserCtxt(ret); |
| 479 | return (NULL); |
| 480 | } |
| 481 | ret->xctxt->flags = XML_XPATH_CHECKNS; |
| 482 | return (ret); |
| 483 | } |
| 484 | |
| 485 | /** |
| 486 | * xmlSchematronNewMemParserCtxt: |
| 487 | * @buffer: a pointer to a char array containing the schemas |
| 488 | * @size: the size of the array |
| 489 | * |
| 490 | * Create an XML Schematrons parse context for that memory buffer expected |
| 491 | * to contain an XML Schematrons file. |
| 492 | * |
| 493 | * Returns the parser context or NULL in case of error |
| 494 | */ |
| 495 | xmlSchematronParserCtxtPtr |
| 496 | xmlSchematronNewMemParserCtxt(const char *buffer, int size) |
| 497 | { |
| 498 | xmlSchematronParserCtxtPtr ret; |
| 499 | |
| 500 | if ((buffer == NULL) || (size <= 0)) |
| 501 | return (NULL); |
| 502 | |
| 503 | ret = |
| 504 | (xmlSchematronParserCtxtPtr) |
| 505 | xmlMalloc(sizeof(xmlSchematronParserCtxt)); |
| 506 | if (ret == NULL) { |
| 507 | xmlSchematronPErrMemory(NULL, "allocating schema parser context", |
| 508 | NULL); |
| 509 | return (NULL); |
| 510 | } |
| 511 | memset(ret, 0, sizeof(xmlSchematronParserCtxt)); |
| 512 | ret->buffer = buffer; |
| 513 | ret->size = size; |
| 514 | ret->dict = xmlDictCreate(); |
| 515 | ret->xctxt = xmlXPathNewContext(NULL); |
| 516 | if (ret->xctxt == NULL) { |
| 517 | xmlSchematronPErrMemory(NULL, "allocating schema parser XPath context", |
| 518 | NULL); |
| 519 | xmlSchematronFreeParserCtxt(ret); |
| 520 | return (NULL); |
| 521 | } |
| 522 | return (ret); |
| 523 | } |
| 524 | |
| 525 | /** |
| 526 | * xmlSchematronNewDocParserCtxt: |
| 527 | * @doc: a preparsed document tree |
| 528 | * |
| 529 | * Create an XML Schematrons parse context for that document. |
| 530 | * NB. The document may be modified during the parsing process. |
| 531 | * |
| 532 | * Returns the parser context or NULL in case of error |
| 533 | */ |
| 534 | xmlSchematronParserCtxtPtr |
| 535 | xmlSchematronNewDocParserCtxt(xmlDocPtr doc) |
| 536 | { |
| 537 | xmlSchematronParserCtxtPtr ret; |
| 538 | |
| 539 | if (doc == NULL) |
| 540 | return (NULL); |
| 541 | |
| 542 | ret = |
| 543 | (xmlSchematronParserCtxtPtr) |
| 544 | xmlMalloc(sizeof(xmlSchematronParserCtxt)); |
| 545 | if (ret == NULL) { |
| 546 | xmlSchematronPErrMemory(NULL, "allocating schema parser context", |
| 547 | NULL); |
| 548 | return (NULL); |
| 549 | } |
| 550 | memset(ret, 0, sizeof(xmlSchematronParserCtxt)); |
| 551 | ret->doc = doc; |
| 552 | ret->dict = xmlDictCreate(); |
| 553 | /* The application has responsibility for the document */ |
| 554 | ret->preserve = 1; |
| 555 | ret->xctxt = xmlXPathNewContext(doc); |
| 556 | if (ret->xctxt == NULL) { |
| 557 | xmlSchematronPErrMemory(NULL, "allocating schema parser XPath context", |
| 558 | NULL); |
| 559 | xmlSchematronFreeParserCtxt(ret); |
| 560 | return (NULL); |
| 561 | } |
| 562 | |
| 563 | return (ret); |
| 564 | } |
| 565 | |
| 566 | /** |
| 567 | * xmlSchematronFreeParserCtxt: |
| 568 | * @ctxt: the schema parser context |
| 569 | * |
| 570 | * Free the resources associated to the schema parser context |
| 571 | */ |
| 572 | void |
| 573 | xmlSchematronFreeParserCtxt(xmlSchematronParserCtxtPtr ctxt) |
| 574 | { |
| 575 | if (ctxt == NULL) |
| 576 | return; |
| 577 | if (ctxt->doc != NULL && !ctxt->preserve) |
| 578 | xmlFreeDoc(ctxt->doc); |
| 579 | if (ctxt->xctxt != NULL) { |
| 580 | xmlXPathFreeContext(ctxt->xctxt); |
| 581 | } |
| 582 | if (ctxt->namespaces != NULL) |
| 583 | xmlFree(ctxt->namespaces); |
| 584 | xmlDictFree(ctxt->dict); |
| 585 | xmlFree(ctxt); |
| 586 | } |
| 587 | |
| 588 | /** |
| 589 | * xmlSchematronPushInclude: |
| 590 | * @ctxt: the schema parser context |
| 591 | * @doc: the included document |
| 592 | * @cur: the current include node |
| 593 | * |
| 594 | * Add an included document |
| 595 | */ |
| 596 | static void |
| 597 | xmlSchematronPushInclude(xmlSchematronParserCtxtPtr ctxt, |
| 598 | xmlDocPtr doc, xmlNodePtr cur) |
| 599 | { |
| 600 | if (ctxt->includes == NULL) { |
| 601 | ctxt->maxIncludes = 10; |
| 602 | ctxt->includes = (xmlNodePtr *) |
| 603 | xmlMalloc(ctxt->maxIncludes * 2 * sizeof(xmlNodePtr)); |
| 604 | if (ctxt->includes == NULL) { |
| 605 | xmlSchematronPErrMemory(NULL, "allocating parser includes", |
| 606 | NULL); |
| 607 | return; |
| 608 | } |
| 609 | ctxt->nbIncludes = 0; |
| 610 | } else if (ctxt->nbIncludes + 2 >= ctxt->maxIncludes) { |
| 611 | xmlNodePtr *tmp; |
| 612 | |
| 613 | tmp = (xmlNodePtr *) |
| 614 | xmlRealloc(ctxt->includes, ctxt->maxIncludes * 4 * |
| 615 | sizeof(xmlNodePtr)); |
| 616 | if (tmp == NULL) { |
| 617 | xmlSchematronPErrMemory(NULL, "allocating parser includes", |
| 618 | NULL); |
| 619 | return; |
| 620 | } |
| 621 | ctxt->includes = tmp; |
| 622 | ctxt->maxIncludes *= 2; |
| 623 | } |
| 624 | ctxt->includes[2 * ctxt->nbIncludes] = cur; |
| 625 | ctxt->includes[2 * ctxt->nbIncludes + 1] = (xmlNodePtr) doc; |
| 626 | ctxt->nbIncludes++; |
| 627 | } |
| 628 | |
| 629 | /** |
| 630 | * xmlSchematronPopInclude: |
| 631 | * @ctxt: the schema parser context |
| 632 | * |
| 633 | * Pop an include level. The included document is being freed |
| 634 | * |
| 635 | * Returns the node immediately following the include or NULL if the |
| 636 | * include list was empty. |
| 637 | */ |
| 638 | static xmlNodePtr |
| 639 | xmlSchematronPopInclude(xmlSchematronParserCtxtPtr ctxt) |
| 640 | { |
| 641 | xmlDocPtr doc; |
| 642 | xmlNodePtr ret; |
| 643 | |
| 644 | if (ctxt->nbIncludes <= 0) |
| 645 | return(NULL); |
| 646 | ctxt->nbIncludes--; |
| 647 | doc = (xmlDocPtr) ctxt->includes[2 * ctxt->nbIncludes + 1]; |
| 648 | ret = ctxt->includes[2 * ctxt->nbIncludes]; |
| 649 | xmlFreeDoc(doc); |
| 650 | if (ret != NULL) |
| 651 | ret = ret->next; |
| 652 | if (ret == NULL) |
| 653 | return(xmlSchematronPopInclude(ctxt)); |
| 654 | return(ret); |
| 655 | } |
| 656 | |
| 657 | /** |
| 658 | * xmlSchematronAddNamespace: |
| 659 | * @ctxt: the schema parser context |
| 660 | * @prefix: the namespace prefix |
| 661 | * @ns: the namespace name |
| 662 | * |
| 663 | * Add a namespace definition in the context |
| 664 | */ |
| 665 | static void |
| 666 | xmlSchematronAddNamespace(xmlSchematronParserCtxtPtr ctxt, |
| 667 | const xmlChar *prefix, const xmlChar *ns) |
| 668 | { |
| 669 | if (ctxt->namespaces == NULL) { |
| 670 | ctxt->maxNamespaces = 10; |
| 671 | ctxt->namespaces = (const xmlChar **) |
| 672 | xmlMalloc(ctxt->maxNamespaces * 2 * sizeof(const xmlChar *)); |
| 673 | if (ctxt->namespaces == NULL) { |
| 674 | xmlSchematronPErrMemory(NULL, "allocating parser namespaces", |
| 675 | NULL); |
| 676 | return; |
| 677 | } |
| 678 | ctxt->nbNamespaces = 0; |
| 679 | } else if (ctxt->nbNamespaces + 2 >= ctxt->maxNamespaces) { |
| 680 | const xmlChar **tmp; |
| 681 | |
| 682 | tmp = (const xmlChar **) |
| 683 | xmlRealloc(ctxt->namespaces, ctxt->maxNamespaces * 4 * |
| 684 | sizeof(const xmlChar *)); |
| 685 | if (tmp == NULL) { |
| 686 | xmlSchematronPErrMemory(NULL, "allocating parser namespaces", |
| 687 | NULL); |
| 688 | return; |
| 689 | } |
| 690 | ctxt->namespaces = tmp; |
| 691 | ctxt->maxNamespaces *= 2; |
| 692 | } |
| 693 | ctxt->namespaces[2 * ctxt->nbNamespaces] = |
| 694 | xmlDictLookup(ctxt->dict, ns, -1); |
| 695 | ctxt->namespaces[2 * ctxt->nbNamespaces + 1] = |
| 696 | xmlDictLookup(ctxt->dict, prefix, -1); |
| 697 | ctxt->nbNamespaces++; |
| 698 | ctxt->namespaces[2 * ctxt->nbNamespaces] = NULL; |
| 699 | ctxt->namespaces[2 * ctxt->nbNamespaces + 1] = NULL; |
| 700 | |
| 701 | } |
| 702 | |
| 703 | /** |
| 704 | * xmlSchematronParseRule: |
| 705 | * @ctxt: a schema validation context |
| 706 | * @rule: the rule node |
| 707 | * |
| 708 | * parse a rule element |
| 709 | */ |
| 710 | static void |
| 711 | xmlSchematronParseRule(xmlSchematronParserCtxtPtr ctxt, xmlNodePtr rule) |
| 712 | { |
| 713 | xmlNodePtr cur; |
| 714 | int nbChecks = 0; |
| 715 | xmlChar *test; |
| 716 | xmlChar *context; |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 717 | xmlChar *report; |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 718 | xmlSchematronRulePtr ruleptr; |
| 719 | xmlSchematronTestPtr testptr; |
| 720 | |
| 721 | if ((ctxt == NULL) || (rule == NULL)) return; |
| 722 | |
| 723 | context = xmlGetNoNsProp(rule, BAD_CAST "context"); |
| 724 | if (context == NULL) { |
| 725 | xmlSchematronPErr(ctxt, rule, |
| 726 | XML_SCHEMAP_NOROOT, |
| 727 | "rule has no context attribute", |
| 728 | NULL, NULL); |
| 729 | return; |
| 730 | } else if (context[0] == 0) { |
| 731 | xmlSchematronPErr(ctxt, rule, |
| 732 | XML_SCHEMAP_NOROOT, |
| 733 | "rule has an empty context attribute", |
| 734 | NULL, NULL); |
| 735 | xmlFree(context); |
| 736 | return; |
| 737 | } else { |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 738 | ruleptr = xmlSchematronAddRule(ctxt, ctxt->schema, rule, context, NULL); |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 739 | if (ruleptr == NULL) { |
| 740 | xmlFree(context); |
| 741 | return; |
| 742 | } |
| 743 | } |
| 744 | |
| 745 | cur = rule->children; |
| 746 | NEXT_SCHEMATRON(cur); |
| 747 | while (cur != NULL) { |
| 748 | if (IS_SCHEMATRON(cur, "assert")) { |
| 749 | nbChecks++; |
| 750 | test = xmlGetNoNsProp(cur, BAD_CAST "test"); |
| 751 | if (test == NULL) { |
| 752 | xmlSchematronPErr(ctxt, cur, |
| 753 | XML_SCHEMAP_NOROOT, |
| 754 | "assert has no test attribute", |
| 755 | NULL, NULL); |
| 756 | } else if (test[0] == 0) { |
| 757 | xmlSchematronPErr(ctxt, cur, |
| 758 | XML_SCHEMAP_NOROOT, |
| 759 | "assert has an empty test attribute", |
| 760 | NULL, NULL); |
| 761 | xmlFree(test); |
| 762 | } else { |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 763 | /* TODO will need dynamic processing instead */ |
| 764 | report = xmlNodeGetContent(cur); |
| 765 | |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 766 | testptr = xmlSchematronAddTest(ctxt, XML_SCHEMATRON_ASSERT, |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 767 | ruleptr, cur, test, report); |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 768 | if (testptr == NULL) |
| 769 | xmlFree(test); |
| 770 | } |
| 771 | } else if (IS_SCHEMATRON(cur, "report")) { |
| 772 | nbChecks++; |
| 773 | test = xmlGetNoNsProp(cur, BAD_CAST "test"); |
| 774 | if (test == NULL) { |
| 775 | xmlSchematronPErr(ctxt, cur, |
| 776 | XML_SCHEMAP_NOROOT, |
| 777 | "assert has no test attribute", |
| 778 | NULL, NULL); |
| 779 | } else if (test[0] == 0) { |
| 780 | xmlSchematronPErr(ctxt, cur, |
| 781 | XML_SCHEMAP_NOROOT, |
| 782 | "assert has an empty test attribute", |
| 783 | NULL, NULL); |
| 784 | xmlFree(test); |
| 785 | } else { |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 786 | /* TODO will need dynamic processing instead */ |
| 787 | report = xmlNodeGetContent(cur); |
| 788 | |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 789 | testptr = xmlSchematronAddTest(ctxt, XML_SCHEMATRON_REPORT, |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 790 | ruleptr, cur, test, report); |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 791 | if (testptr == NULL) |
| 792 | xmlFree(test); |
| 793 | } |
| 794 | } else { |
| 795 | xmlSchematronPErr(ctxt, cur, |
| 796 | XML_SCHEMAP_NOROOT, |
| 797 | "Expecting an assert or a report element instead of %s", |
| 798 | cur->name, NULL); |
| 799 | } |
| 800 | cur = cur->next; |
| 801 | NEXT_SCHEMATRON(cur); |
| 802 | } |
| 803 | if (nbChecks == 0) { |
| 804 | xmlSchematronPErr(ctxt, rule, |
| 805 | XML_SCHEMAP_NOROOT, |
| 806 | "rule has no assert nor report element", NULL, NULL); |
| 807 | } |
| 808 | } |
| 809 | |
| 810 | /** |
| 811 | * xmlSchematronParsePattern: |
| 812 | * @ctxt: a schema validation context |
| 813 | * @pat: the pattern node |
| 814 | * |
| 815 | * parse a pattern element |
| 816 | */ |
| 817 | static void |
| 818 | xmlSchematronParsePattern(xmlSchematronParserCtxtPtr ctxt, xmlNodePtr pat) |
| 819 | { |
| 820 | xmlNodePtr cur; |
| 821 | int nbRules = 0; |
| 822 | |
| 823 | if ((ctxt == NULL) || (pat == NULL)) return; |
| 824 | |
| 825 | cur = pat->children; |
| 826 | NEXT_SCHEMATRON(cur); |
| 827 | while (cur != NULL) { |
| 828 | if (IS_SCHEMATRON(cur, "rule")) { |
| 829 | xmlSchematronParseRule(ctxt, cur); |
| 830 | nbRules++; |
| 831 | } else { |
| 832 | xmlSchematronPErr(ctxt, cur, |
| 833 | XML_SCHEMAP_NOROOT, |
| 834 | "Expecting a rule element instead of %s", cur->name, NULL); |
| 835 | } |
| 836 | cur = cur->next; |
| 837 | NEXT_SCHEMATRON(cur); |
| 838 | } |
| 839 | if (nbRules == 0) { |
| 840 | xmlSchematronPErr(ctxt, pat, |
| 841 | XML_SCHEMAP_NOROOT, |
| 842 | "Pattern has no rule element", NULL, NULL); |
| 843 | } |
| 844 | } |
| 845 | |
| 846 | /** |
| 847 | * xmlSchematronLoadInclude: |
| 848 | * @ctxt: a schema validation context |
| 849 | * @cur: the include element |
| 850 | * |
| 851 | * Load the include document, Push the current pointer |
| 852 | * |
| 853 | * Returns the updated node pointer |
| 854 | */ |
| 855 | static xmlNodePtr |
| 856 | xmlSchematronLoadInclude(xmlSchematronParserCtxtPtr ctxt, xmlNodePtr cur) |
| 857 | { |
| 858 | xmlNodePtr ret = NULL; |
| 859 | xmlDocPtr doc = NULL; |
| 860 | xmlChar *href = NULL; |
| 861 | xmlChar *base = NULL; |
| 862 | xmlChar *URI = NULL; |
| 863 | |
| 864 | if ((ctxt == NULL) || (cur == NULL)) |
| 865 | return(NULL); |
| 866 | |
| 867 | href = xmlGetNoNsProp(cur, BAD_CAST "href"); |
| 868 | if (href == NULL) { |
| 869 | xmlSchematronPErr(ctxt, cur, |
| 870 | XML_SCHEMAP_NOROOT, |
| 871 | "Include has no href attribute", NULL, NULL); |
| 872 | return(cur->next); |
| 873 | } |
| 874 | |
| 875 | /* do the URI base composition, load and find the root */ |
| 876 | base = xmlNodeGetBase(cur->doc, cur); |
| 877 | URI = xmlBuildURI(href, base); |
| 878 | doc = xmlReadFile((const char *) URI, NULL, SCHEMATRON_PARSE_OPTIONS); |
| 879 | if (doc == NULL) { |
| 880 | xmlSchematronPErr(ctxt, cur, |
| 881 | XML_SCHEMAP_FAILED_LOAD, |
| 882 | "could not load include '%s'.\n", |
| 883 | URI, NULL); |
| 884 | goto done; |
| 885 | } |
| 886 | ret = xmlDocGetRootElement(doc); |
| 887 | if (ret == NULL) { |
| 888 | xmlSchematronPErr(ctxt, cur, |
| 889 | XML_SCHEMAP_FAILED_LOAD, |
| 890 | "could not find root from include '%s'.\n", |
| 891 | URI, NULL); |
| 892 | goto done; |
| 893 | } |
| 894 | |
| 895 | /* Success, push the include for rollback on exit */ |
| 896 | xmlSchematronPushInclude(ctxt, doc, cur); |
| 897 | |
| 898 | done: |
| 899 | if (ret == NULL) { |
| 900 | if (doc != NULL) |
| 901 | xmlFreeDoc(doc); |
| 902 | } |
| 903 | if (href == NULL) |
| 904 | xmlFree(href); |
| 905 | if (base == NULL) |
| 906 | xmlFree(base); |
| 907 | if (URI == NULL) |
| 908 | xmlFree(URI); |
| 909 | return(ret); |
| 910 | } |
| 911 | |
| 912 | /** |
| 913 | * xmlSchematronParse: |
| 914 | * @ctxt: a schema validation context |
| 915 | * |
| 916 | * parse a schema definition resource and build an internal |
| 917 | * XML Shema struture which can be used to validate instances. |
| 918 | * |
| 919 | * Returns the internal XML Schematron structure built from the resource or |
| 920 | * NULL in case of error |
| 921 | */ |
| 922 | xmlSchematronPtr |
| 923 | xmlSchematronParse(xmlSchematronParserCtxtPtr ctxt) |
| 924 | { |
| 925 | xmlSchematronPtr ret = NULL; |
| 926 | xmlDocPtr doc; |
| 927 | xmlNodePtr root, cur; |
| 928 | int preserve = 0; |
| 929 | |
| 930 | if (ctxt == NULL) |
| 931 | return (NULL); |
| 932 | |
| 933 | ctxt->nberrors = 0; |
| 934 | |
| 935 | /* |
| 936 | * First step is to parse the input document into an DOM/Infoset |
| 937 | */ |
| 938 | if (ctxt->URL != NULL) { |
| 939 | doc = xmlReadFile((const char *) ctxt->URL, NULL, |
| 940 | SCHEMATRON_PARSE_OPTIONS); |
| 941 | if (doc == NULL) { |
| 942 | xmlSchematronPErr(ctxt, NULL, |
| 943 | XML_SCHEMAP_FAILED_LOAD, |
| 944 | "xmlSchematronParse: could not load '%s'.\n", |
| 945 | ctxt->URL, NULL); |
| 946 | return (NULL); |
| 947 | } |
| 948 | } else if (ctxt->buffer != NULL) { |
| 949 | doc = xmlReadMemory(ctxt->buffer, ctxt->size, NULL, NULL, |
| 950 | SCHEMATRON_PARSE_OPTIONS); |
| 951 | if (doc == NULL) { |
| 952 | xmlSchematronPErr(ctxt, NULL, |
| 953 | XML_SCHEMAP_FAILED_PARSE, |
| 954 | "xmlSchematronParse: could not parse.\n", |
| 955 | NULL, NULL); |
| 956 | return (NULL); |
| 957 | } |
| 958 | doc->URL = xmlStrdup(BAD_CAST "in_memory_buffer"); |
| 959 | ctxt->URL = xmlDictLookup(ctxt->dict, BAD_CAST "in_memory_buffer", -1); |
| 960 | } else if (ctxt->doc != NULL) { |
| 961 | doc = ctxt->doc; |
| 962 | preserve = 1; |
| 963 | } else { |
| 964 | xmlSchematronPErr(ctxt, NULL, |
| 965 | XML_SCHEMAP_NOTHING_TO_PARSE, |
| 966 | "xmlSchematronParse: could not parse.\n", |
| 967 | NULL, NULL); |
| 968 | return (NULL); |
| 969 | } |
| 970 | |
| 971 | /* |
| 972 | * Then extract the root and Schematron parse it |
| 973 | */ |
| 974 | root = xmlDocGetRootElement(doc); |
| 975 | if (root == NULL) { |
| 976 | xmlSchematronPErr(ctxt, (xmlNodePtr) doc, |
| 977 | XML_SCHEMAP_NOROOT, |
| 978 | "The schema has no document element.\n", NULL, NULL); |
| 979 | if (!preserve) { |
| 980 | xmlFreeDoc(doc); |
| 981 | } |
| 982 | return (NULL); |
| 983 | } |
| 984 | |
| 985 | if (!IS_SCHEMATRON(root, "schema")) { |
| 986 | xmlSchematronPErr(ctxt, root, |
| 987 | XML_SCHEMAP_NOROOT, |
| 988 | "The XML document '%s' is not a XML schematron document", |
| 989 | ctxt->URL, NULL); |
| 990 | goto exit; |
| 991 | } |
| 992 | ret = xmlSchematronNewSchematron(ctxt); |
| 993 | if (ret == NULL) |
| 994 | goto exit; |
| 995 | ctxt->schema = ret; |
| 996 | |
| 997 | /* |
| 998 | * scan the schema elements |
| 999 | */ |
| 1000 | cur = root->children; |
| 1001 | NEXT_SCHEMATRON(cur); |
| 1002 | if (IS_SCHEMATRON(cur, "title")) { |
| 1003 | xmlChar *title = xmlNodeGetContent(cur); |
| 1004 | if (title != NULL) { |
| 1005 | ret->title = xmlDictLookup(ret->dict, title, -1); |
| 1006 | xmlFree(title); |
| 1007 | } |
| 1008 | cur = cur->next; |
| 1009 | NEXT_SCHEMATRON(cur); |
| 1010 | } |
| 1011 | while (IS_SCHEMATRON(cur, "ns")) { |
| 1012 | xmlChar *prefix = xmlGetNoNsProp(cur, BAD_CAST "prefix"); |
| 1013 | xmlChar *uri = xmlGetNoNsProp(cur, BAD_CAST "uri"); |
| 1014 | if ((uri == NULL) || (uri[0] == 0)) { |
| 1015 | xmlSchematronPErr(ctxt, cur, |
| 1016 | XML_SCHEMAP_NOROOT, |
| 1017 | "ns element has no uri", NULL, NULL); |
| 1018 | } |
| 1019 | if ((prefix == NULL) || (prefix[0] == 0)) { |
| 1020 | xmlSchematronPErr(ctxt, cur, |
| 1021 | XML_SCHEMAP_NOROOT, |
| 1022 | "ns element has no prefix", NULL, NULL); |
| 1023 | } |
| 1024 | if ((prefix) && (uri)) { |
| 1025 | xmlXPathRegisterNs(ctxt->xctxt, prefix, uri); |
| 1026 | xmlSchematronAddNamespace(ctxt, prefix, uri); |
| 1027 | ret->nbNs++; |
| 1028 | } |
| 1029 | if (uri) |
| 1030 | xmlFree(uri); |
| 1031 | if (prefix) |
| 1032 | xmlFree(prefix); |
| 1033 | cur = cur->next; |
| 1034 | NEXT_SCHEMATRON(cur); |
| 1035 | } |
| 1036 | while (cur != NULL) { |
| 1037 | if (IS_SCHEMATRON(cur, "pattern")) { |
| 1038 | xmlSchematronParsePattern(ctxt, cur); |
| 1039 | ret->nbPattern++; |
| 1040 | } else { |
| 1041 | xmlSchematronPErr(ctxt, cur, |
| 1042 | XML_SCHEMAP_NOROOT, |
| 1043 | "Expecting a pattern element instead of %s", cur->name, NULL); |
| 1044 | } |
| 1045 | cur = cur->next; |
| 1046 | NEXT_SCHEMATRON(cur); |
| 1047 | } |
| 1048 | if (ret->nbPattern == 0) { |
| 1049 | xmlSchematronPErr(ctxt, root, |
| 1050 | XML_SCHEMAP_NOROOT, |
| 1051 | "The schematron document '%s' has no pattern", |
| 1052 | ctxt->URL, NULL); |
| 1053 | goto exit; |
| 1054 | } |
| 1055 | |
| 1056 | exit: |
| 1057 | if (!preserve) { |
| 1058 | xmlFreeDoc(doc); |
| 1059 | } |
| 1060 | if (ctxt->nberrors != 0) { |
| 1061 | xmlSchematronFree(ret); |
| 1062 | ret = NULL; |
| 1063 | } else { |
| 1064 | ret->namespaces = ctxt->namespaces; |
| 1065 | ret->nbNamespaces = ctxt->nbNamespaces; |
| 1066 | ctxt->namespaces = NULL; |
| 1067 | } |
| 1068 | return (ret); |
| 1069 | } |
| 1070 | |
| 1071 | /************************************************************************ |
| 1072 | * * |
| 1073 | * Schematrontron Reports handler * |
| 1074 | * * |
| 1075 | ************************************************************************/ |
| 1076 | |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 1077 | /** |
| 1078 | * xmlSchematronReportOutput: |
| 1079 | * @ctxt: the validation context |
| 1080 | * @cur: the current node tested |
| 1081 | * @msg: the message output |
| 1082 | * |
| 1083 | * Output part of the report to whatever channel the user selected |
| 1084 | */ |
| 1085 | static void |
| 1086 | xmlSchematronReportOutput(xmlSchematronValidCtxtPtr ctxt ATTRIBUTE_UNUSED, |
| 1087 | xmlNodePtr cur ATTRIBUTE_UNUSED, |
| 1088 | const char *msg ATTRIBUTE_UNUSED) { |
| 1089 | /* TODO */ |
| 1090 | fprintf(stderr, "%s", msg); |
| 1091 | } |
| 1092 | |
| 1093 | /** |
| 1094 | * xmlSchematronReportSuccess: |
| 1095 | * @ctxt: the validation context |
| 1096 | * @test: the compiled test |
| 1097 | * @cur: the current node tested |
| 1098 | * @success: boolean value for the result |
| 1099 | * |
| 1100 | * called from the validation engine when an assert or report test have |
| 1101 | * been done. |
| 1102 | */ |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 1103 | static void |
| 1104 | xmlSchematronReportSuccess(xmlSchematronValidCtxtPtr ctxt, |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 1105 | xmlSchematronTestPtr test, xmlNodePtr cur, int success) { |
| 1106 | if ((ctxt == NULL) || (cur == NULL) || (test == NULL)) |
| 1107 | return; |
| 1108 | /* if quiet and not SVRL report only failures */ |
| 1109 | if ((ctxt->flags & XML_SCHEMATRON_OUT_QUIET) && |
| 1110 | ((ctxt->flags & XML_SCHEMATRON_OUT_XML) == 0) && (success)) |
| 1111 | return; |
| 1112 | if (ctxt->flags & XML_SCHEMATRON_OUT_XML) { |
| 1113 | TODO |
| 1114 | } else { |
| 1115 | xmlChar *path; |
| 1116 | char msg[1000]; |
| 1117 | long line; |
| 1118 | const xmlChar *report; |
| 1119 | |
| 1120 | if (success) |
| 1121 | return; |
| 1122 | line = xmlGetLineNo(cur); |
| 1123 | path = xmlGetNodePath(cur); |
| 1124 | if (path == NULL) |
| 1125 | path = (xmlChar *) cur->name; |
| 1126 | if ((test->report != NULL) && (test->report[0] != 0)) |
| 1127 | report = test->report; |
| 1128 | else if (test->type == XML_SCHEMATRON_ASSERT) { |
| 1129 | report = BAD_CAST "node failed assert"; |
| 1130 | } else { |
| 1131 | report = BAD_CAST "node failed report"; |
| 1132 | } |
| 1133 | snprintf(msg, 999, "%s line %ld:\n %s\n", (const char *) path, |
| 1134 | line, (const char *) report); |
| 1135 | xmlSchematronReportOutput(ctxt, cur, &msg[0]); |
| 1136 | if ((path != NULL) && (path != (xmlChar *) cur->name)) |
| 1137 | xmlFree(path); |
| 1138 | } |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 1139 | } |
| 1140 | |
| 1141 | /************************************************************************ |
| 1142 | * * |
| 1143 | * Validation against a Schematrontron * |
| 1144 | * * |
| 1145 | ************************************************************************/ |
| 1146 | |
| 1147 | /** |
| 1148 | * xmlSchematronNewValidCtxt: |
| 1149 | * @schema: a precompiled XML Schematrons |
| 1150 | * @options: a set of xmlSchematronValidOptions |
| 1151 | * |
| 1152 | * Create an XML Schematrons validation context based on the given schema. |
| 1153 | * |
| 1154 | * Returns the validation context or NULL in case of error |
| 1155 | */ |
| 1156 | xmlSchematronValidCtxtPtr |
| 1157 | xmlSchematronNewValidCtxt(xmlSchematronPtr schema, int options) |
| 1158 | { |
| 1159 | int i; |
| 1160 | xmlSchematronValidCtxtPtr ret; |
| 1161 | |
| 1162 | ret = |
| 1163 | (xmlSchematronValidCtxtPtr) |
| 1164 | xmlMalloc(sizeof(xmlSchematronValidCtxt)); |
| 1165 | if (ret == NULL) { |
| 1166 | xmlSchematronVErrMemory(NULL, "allocating validation context", |
| 1167 | NULL); |
| 1168 | return (NULL); |
| 1169 | } |
| 1170 | memset(ret, 0, sizeof(xmlSchematronValidCtxt)); |
| 1171 | ret->type = XML_STRON_CTXT_VALIDATOR; |
| 1172 | ret->schema = schema; |
| 1173 | ret->xctxt = xmlXPathNewContext(NULL); |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 1174 | ret->flags = options; |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 1175 | if (ret->xctxt == NULL) { |
| 1176 | xmlSchematronPErrMemory(NULL, "allocating schema parser XPath context", |
| 1177 | NULL); |
| 1178 | xmlSchematronFreeValidCtxt(ret); |
| 1179 | return (NULL); |
| 1180 | } |
| 1181 | for (i = 0;i < schema->nbNamespaces;i++) { |
| 1182 | if ((schema->namespaces[2 * i] == NULL) || |
| 1183 | (schema->namespaces[2 * i + 1] == NULL)) |
| 1184 | break; |
| 1185 | xmlXPathRegisterNs(ret->xctxt, schema->namespaces[2 * i + 1], |
| 1186 | schema->namespaces[2 * i]); |
| 1187 | } |
| 1188 | return (ret); |
| 1189 | } |
| 1190 | |
| 1191 | /** |
| 1192 | * xmlSchematronFreeValidCtxt: |
| 1193 | * @ctxt: the schema validation context |
| 1194 | * |
| 1195 | * Free the resources associated to the schema validation context |
| 1196 | */ |
| 1197 | void |
| 1198 | xmlSchematronFreeValidCtxt(xmlSchematronValidCtxtPtr ctxt) |
| 1199 | { |
| 1200 | if (ctxt == NULL) |
| 1201 | return; |
| 1202 | if (ctxt->xctxt != NULL) |
| 1203 | xmlXPathFreeContext(ctxt->xctxt); |
| 1204 | if (ctxt->dict != NULL) |
| 1205 | xmlDictFree(ctxt->dict); |
| 1206 | xmlFree(ctxt); |
| 1207 | } |
| 1208 | |
| 1209 | static xmlNodePtr |
| 1210 | xmlSchematronNextNode(xmlNodePtr cur) { |
| 1211 | if (cur->children != NULL) { |
| 1212 | /* |
| 1213 | * Do not descend on entities declarations |
| 1214 | */ |
| 1215 | if (cur->children->type != XML_ENTITY_DECL) { |
| 1216 | cur = cur->children; |
| 1217 | /* |
| 1218 | * Skip DTDs |
| 1219 | */ |
| 1220 | if (cur->type != XML_DTD_NODE) |
| 1221 | return(cur); |
| 1222 | } |
| 1223 | } |
| 1224 | |
| 1225 | while (cur->next != NULL) { |
| 1226 | cur = cur->next; |
| 1227 | if ((cur->type != XML_ENTITY_DECL) && |
| 1228 | (cur->type != XML_DTD_NODE)) |
| 1229 | return(cur); |
| 1230 | } |
| 1231 | |
| 1232 | do { |
| 1233 | cur = cur->parent; |
| 1234 | if (cur == NULL) return(NULL); |
| 1235 | if (cur->type == XML_DOCUMENT_NODE) return(NULL); |
| 1236 | if (cur->next != NULL) { |
| 1237 | cur = cur->next; |
| 1238 | return(cur); |
| 1239 | } |
| 1240 | } while (cur != NULL); |
| 1241 | return(cur); |
| 1242 | } |
| 1243 | |
| 1244 | /** |
| 1245 | * xmlSchematronRunTest: |
| 1246 | * @ctxt: the schema validation context |
| 1247 | * @test: the current test |
| 1248 | * @instance: the document instace tree |
| 1249 | * @cur: the current node in the instance |
| 1250 | * |
| 1251 | * Validate a rule against a tree instance at a given position |
| 1252 | * |
| 1253 | * Returns 1 in case of success, 0 if error and -1 in case of internal error |
| 1254 | */ |
| 1255 | static int |
| 1256 | xmlSchematronRunTest(xmlSchematronValidCtxtPtr ctxt, |
| 1257 | xmlSchematronTestPtr test, xmlDocPtr instance, xmlNodePtr cur) |
| 1258 | { |
| 1259 | xmlXPathObjectPtr ret; |
| 1260 | int failed; |
| 1261 | |
| 1262 | failed = 0; |
| 1263 | ctxt->xctxt->doc = instance; |
| 1264 | ctxt->xctxt->node = cur; |
| 1265 | ret = xmlXPathCompiledEval(test->comp, ctxt->xctxt); |
| 1266 | if (ret == NULL) { |
| 1267 | failed = 1; |
| 1268 | } else switch (ret->type) { |
| 1269 | case XPATH_XSLT_TREE: |
| 1270 | case XPATH_NODESET: |
| 1271 | if ((ret->nodesetval == NULL) || |
| 1272 | (ret->nodesetval->nodeNr == 0)) |
| 1273 | failed = 1; |
| 1274 | break; |
| 1275 | case XPATH_BOOLEAN: |
| 1276 | failed = !ret->boolval; |
| 1277 | break; |
| 1278 | case XPATH_NUMBER: |
| 1279 | if ((xmlXPathIsNaN(ret->floatval)) || |
| 1280 | (ret->floatval == 0.0)) |
| 1281 | failed = 1; |
| 1282 | break; |
| 1283 | case XPATH_STRING: |
| 1284 | if ((ret->stringval == NULL) || |
| 1285 | (ret->stringval[0] == 0)) |
| 1286 | failed = 1; |
| 1287 | break; |
| 1288 | case XPATH_UNDEFINED: |
| 1289 | case XPATH_POINT: |
| 1290 | case XPATH_RANGE: |
| 1291 | case XPATH_LOCATIONSET: |
| 1292 | case XPATH_USERS: |
| 1293 | failed = 1; |
| 1294 | break; |
| 1295 | } |
Daniel Veillard | d4501d7 | 2005-07-24 14:27:16 +0000 | [diff] [blame] | 1296 | if (failed) |
| 1297 | ctxt->nberrors++; |
| 1298 | xmlSchematronReportSuccess(ctxt, test, cur, !failed); |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 1299 | |
| 1300 | return(!failed); |
| 1301 | } |
| 1302 | |
| 1303 | /** |
| 1304 | * xmlSchematronValidateDoc: |
| 1305 | * @ctxt: the schema validation context |
| 1306 | * @instance: the document instace tree |
| 1307 | * |
| 1308 | * Validate a tree instance against the schematron |
| 1309 | * |
| 1310 | * Returns 0 in case of success, -1 in case of internal error |
| 1311 | * and an error count otherwise. |
| 1312 | */ |
| 1313 | int |
| 1314 | xmlSchematronValidateDoc(xmlSchematronValidCtxtPtr ctxt, xmlDocPtr instance) |
| 1315 | { |
| 1316 | xmlNodePtr cur; |
| 1317 | xmlSchematronRulePtr rule; |
| 1318 | xmlSchematronTestPtr test; |
| 1319 | |
| 1320 | if ((ctxt == NULL) || (ctxt->schema == NULL) || |
| 1321 | (ctxt->schema->rules == NULL) || (instance == NULL)) |
| 1322 | return(-1); |
| 1323 | ctxt->nberrors = 0; |
| 1324 | cur = xmlDocGetRootElement(instance); |
| 1325 | while (cur != NULL) { |
| 1326 | rule = ctxt->schema->rules; |
| 1327 | while (rule != NULL) { |
| 1328 | if (xmlPatternMatch(rule->pattern, cur) == 1) { |
Daniel Veillard | ed6c549 | 2005-07-23 15:00:22 +0000 | [diff] [blame] | 1329 | test = rule->tests; |
| 1330 | while (test != NULL) { |
| 1331 | xmlSchematronRunTest(ctxt, test, instance, cur); |
| 1332 | test = test->next; |
| 1333 | } |
| 1334 | } |
| 1335 | rule = rule->next; |
| 1336 | } |
| 1337 | |
| 1338 | cur = xmlSchematronNextNode(cur); |
| 1339 | } |
| 1340 | return(ctxt->nberrors); |
| 1341 | } |
| 1342 | |
| 1343 | #ifdef STANDALONE |
| 1344 | int |
| 1345 | main(void) |
| 1346 | { |
| 1347 | int ret; |
| 1348 | xmlDocPtr instance; |
| 1349 | xmlSchematronParserCtxtPtr pctxt; |
| 1350 | xmlSchematronValidCtxtPtr vctxt; |
| 1351 | xmlSchematronPtr schema = NULL; |
| 1352 | |
| 1353 | pctxt = xmlSchematronNewParserCtxt("tst.sct"); |
| 1354 | if (pctxt == NULL) { |
| 1355 | fprintf(stderr, "failed to build schematron parser\n"); |
| 1356 | } else { |
| 1357 | schema = xmlSchematronParse(pctxt); |
| 1358 | if (schema == NULL) { |
| 1359 | fprintf(stderr, "failed to compile schematron\n"); |
| 1360 | } |
| 1361 | xmlSchematronFreeParserCtxt(pctxt); |
| 1362 | } |
| 1363 | instance = xmlReadFile("tst.sct", NULL, |
| 1364 | XML_PARSE_NOENT | XML_PARSE_NOCDATA); |
| 1365 | if (instance == NULL) { |
| 1366 | fprintf(stderr, "failed to parse instance\n"); |
| 1367 | } |
| 1368 | if ((schema != NULL) && (instance != NULL)) { |
| 1369 | vctxt = xmlSchematronNewValidCtxt(schema); |
| 1370 | if (vctxt == NULL) { |
| 1371 | fprintf(stderr, "failed to build schematron validator\n"); |
| 1372 | } else { |
| 1373 | ret = xmlSchematronValidateDoc(vctxt, instance); |
| 1374 | xmlSchematronFreeValidCtxt(vctxt); |
| 1375 | } |
| 1376 | } |
| 1377 | xmlSchematronFree(schema); |
| 1378 | xmlFreeDoc(instance); |
| 1379 | |
| 1380 | xmlCleanupParser(); |
| 1381 | xmlMemoryDump(); |
| 1382 | |
| 1383 | return (0); |
| 1384 | } |
| 1385 | #endif |
| 1386 | #endif /* LIBXML_SCHEMATRON_ENABLED */ |