Daniel Veillard | 6eadf63 | 2003-01-23 18:29:16 +0000 | [diff] [blame] | 1 | /* |
| 2 | * relaxng.c : implementation of the Relax-NG handling and 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_SCHEMAS_ENABLED |
| 13 | |
| 14 | #include <string.h> |
| 15 | #include <stdio.h> |
| 16 | #include <libxml/xmlmemory.h> |
| 17 | #include <libxml/parser.h> |
| 18 | #include <libxml/parserInternals.h> |
| 19 | #include <libxml/hash.h> |
| 20 | #include <libxml/uri.h> |
| 21 | |
| 22 | #include <libxml/relaxng.h> |
| 23 | |
| 24 | #include <libxml/xmlschemastypes.h> |
| 25 | #include <libxml/xmlautomata.h> |
| 26 | #include <libxml/xmlregexp.h> |
| 27 | |
| 28 | /* |
| 29 | * The Relax-NG namespace |
| 30 | */ |
| 31 | static const xmlChar *xmlRelaxNGNs = (const xmlChar *) |
| 32 | "http://relaxng.org/ns/structure/1.0"; |
| 33 | |
| 34 | #define IS_RELAXNG(node, type) \ |
| 35 | ((node != NULL) && (node->ns != NULL) && \ |
| 36 | (xmlStrEqual(node->name, (const xmlChar *) type)) && \ |
| 37 | (xmlStrEqual(node->ns->href, xmlRelaxNGNs))) |
| 38 | |
| 39 | |
| 40 | #define DEBUG 1 /* very verbose output */ |
| 41 | #define DEBUG_CONTENT 1 |
| 42 | #define DEBUG_TYPE 1 |
| 43 | /* #define DEBUG_CONTENT_REGEXP 1 */ |
| 44 | /* #define DEBUG_AUTOMATA 1 */ |
| 45 | |
| 46 | #define UNBOUNDED (1 << 30) |
| 47 | #define TODO \ |
| 48 | xmlGenericError(xmlGenericErrorContext, \ |
| 49 | "Unimplemented block at %s:%d\n", \ |
| 50 | __FILE__, __LINE__); |
| 51 | |
| 52 | typedef struct _xmlRelaxNGSchema xmlRelaxNGSchema; |
| 53 | typedef xmlRelaxNGSchema *xmlRelaxNGSchemaPtr; |
| 54 | |
| 55 | typedef struct _xmlRelaxNGDefine xmlRelaxNGDefine; |
| 56 | typedef xmlRelaxNGDefine *xmlRelaxNGDefinePtr; |
| 57 | |
| 58 | typedef enum { |
| 59 | XML_RELAXNG_COMBINE_UNDEFINED = 0, /* undefined */ |
| 60 | XML_RELAXNG_COMBINE_CHOICE, /* choice */ |
| 61 | XML_RELAXNG_COMBINE_INTERLEAVE /* interleave */ |
| 62 | } xmlRelaxNGCombine; |
| 63 | |
| 64 | typedef struct _xmlRelaxNGGrammar xmlRelaxNGGrammar; |
| 65 | typedef xmlRelaxNGGrammar *xmlRelaxNGGrammarPtr; |
| 66 | |
| 67 | struct _xmlRelaxNGGrammar { |
| 68 | xmlRelaxNGGrammarPtr parent;/* the parent grammar if any */ |
| 69 | xmlRelaxNGGrammarPtr children;/* the children grammar if any */ |
| 70 | xmlRelaxNGGrammarPtr next; /* the next grammar if any */ |
| 71 | xmlRelaxNGDefinePtr start; /* <start> content */ |
| 72 | xmlRelaxNGCombine combine; /* the default combine value */ |
| 73 | xmlHashTablePtr defs; /* define* */ |
| 74 | xmlHashTablePtr refs; /* references */ |
| 75 | }; |
| 76 | |
| 77 | |
| 78 | #if 0 |
| 79 | struct _xmlRelaxNGSchema { |
| 80 | }; |
| 81 | #endif |
| 82 | |
| 83 | typedef enum { |
| 84 | XML_RELAXNG_EMPTY = 0, /* an empty pattern */ |
| 85 | XML_RELAXNG_NOT_ALLOWED, /* not allowed top */ |
| 86 | XML_RELAXNG_TEXT, /* textual content */ |
| 87 | XML_RELAXNG_ELEMENT, /* an element */ |
| 88 | XML_RELAXNG_DATATYPE, /* extenal data type definition */ |
| 89 | XML_RELAXNG_VALUE, /* value from an extenal data type definition */ |
| 90 | XML_RELAXNG_LIST, /* a list of patterns */ |
| 91 | XML_RELAXNG_ATTRIBUTE, /* an attrbute following a pattern */ |
| 92 | XML_RELAXNG_DEF, /* a definition */ |
| 93 | XML_RELAXNG_REF, /* reference to a definition */ |
| 94 | XML_RELAXNG_OPTIONAL, /* optional patterns */ |
| 95 | XML_RELAXNG_ZEROORMORE, /* zero or more non empty patterns */ |
| 96 | XML_RELAXNG_ONEORMORE, /* one or more non empty patterns */ |
| 97 | XML_RELAXNG_CHOICE, /* a choice between non empty patterns */ |
| 98 | XML_RELAXNG_GROUP, /* a pair/group of non empty patterns */ |
| 99 | XML_RELAXNG_INTERLEAVE /* interleaving choice of non-empty patterns */ |
| 100 | } xmlRelaxNGType; |
| 101 | |
| 102 | struct _xmlRelaxNGDefine { |
| 103 | xmlRelaxNGType type; /* the type of definition */ |
| 104 | xmlNodePtr node; /* the node in the source */ |
| 105 | xmlChar *name; /* the element local name if present */ |
| 106 | xmlChar *ns; /* the namespace local name if present */ |
| 107 | xmlRelaxNGDefinePtr content;/* the expected content */ |
| 108 | xmlRelaxNGDefinePtr next; /* list within grouping sequences */ |
| 109 | xmlRelaxNGDefinePtr attrs; /* list of attributes for elements */ |
| 110 | xmlRelaxNGDefinePtr nextHash;/* next define in defs/refs hash tables */ |
| 111 | }; |
| 112 | |
| 113 | /** |
| 114 | * _xmlRelaxNG: |
| 115 | * |
| 116 | * A RelaxNGs definition |
| 117 | */ |
| 118 | struct _xmlRelaxNG { |
| 119 | xmlRelaxNGGrammarPtr topgrammar; |
| 120 | xmlDocPtr doc; |
| 121 | |
| 122 | xmlHashTablePtr defs; /* define */ |
| 123 | xmlHashTablePtr refs; /* references */ |
| 124 | void *_private; /* unused by the library for users or bindings */ |
| 125 | }; |
| 126 | |
| 127 | typedef enum { |
| 128 | XML_RELAXNG_ERR_OK = 0, |
| 129 | XML_RELAXNG_ERR_NOROOT = 1, |
| 130 | XML_RELAXNG_ERR_ |
| 131 | } xmlRelaxNGValidError; |
| 132 | |
| 133 | #define XML_RELAXNG_IN_ATTRIBUTE 1 |
| 134 | |
| 135 | struct _xmlRelaxNGParserCtxt { |
| 136 | void *userData; /* user specific data block */ |
| 137 | xmlRelaxNGValidityErrorFunc error; /* the callback in case of errors */ |
| 138 | xmlRelaxNGValidityWarningFunc warning;/* the callback in case of warning */ |
| 139 | xmlRelaxNGValidError err; |
| 140 | |
| 141 | xmlRelaxNGPtr schema; /* The schema in use */ |
| 142 | xmlRelaxNGGrammarPtr grammar; /* the current grammar */ |
| 143 | int flags; /* parser flags */ |
| 144 | int nbErrors; /* number of errors at parse time */ |
| 145 | int nbWarnings; /* number of warnings at parse time */ |
| 146 | |
| 147 | xmlChar *URL; |
| 148 | xmlDocPtr doc; |
| 149 | |
| 150 | const char *buffer; |
| 151 | int size; |
| 152 | |
| 153 | /* |
| 154 | * Used to build complex element content models |
| 155 | */ |
| 156 | xmlAutomataPtr am; |
| 157 | xmlAutomataStatePtr start; |
| 158 | xmlAutomataStatePtr end; |
| 159 | xmlAutomataStatePtr state; |
| 160 | }; |
| 161 | |
| 162 | #define FLAGS_IGNORABLE 1 |
| 163 | #define FLAGS_NEGATIVE 2 |
| 164 | |
| 165 | /** |
| 166 | * xmlRelaxNGValidState: |
| 167 | * |
| 168 | * A RelaxNGs validation state |
| 169 | */ |
| 170 | #define MAX_ATTR 20 |
| 171 | typedef struct _xmlRelaxNGValidState xmlRelaxNGValidState; |
| 172 | typedef xmlRelaxNGValidState *xmlRelaxNGValidStatePtr; |
| 173 | struct _xmlRelaxNGValidState { |
| 174 | xmlNodePtr node; /* the current node */ |
| 175 | xmlNodePtr seq; /* the sequence of children left to validate */ |
| 176 | int nbAttrs; /* the number of attributes */ |
| 177 | xmlChar *value; /* the value when operating on string */ |
| 178 | xmlAttrPtr attrs[1]; /* the array of attributes */ |
| 179 | }; |
| 180 | |
| 181 | /** |
| 182 | * xmlRelaxNGValidCtxt: |
| 183 | * |
| 184 | * A RelaxNGs validation context |
| 185 | */ |
| 186 | |
| 187 | struct _xmlRelaxNGValidCtxt { |
| 188 | void *userData; /* user specific data block */ |
| 189 | xmlRelaxNGValidityErrorFunc error; /* the callback in case of errors */ |
| 190 | xmlRelaxNGValidityWarningFunc warning;/* the callback in case of warning */ |
| 191 | |
| 192 | xmlRelaxNGPtr schema; /* The schema in use */ |
| 193 | xmlDocPtr doc; /* the document being validated */ |
| 194 | xmlRelaxNGValidStatePtr state; /* the current validation state */ |
| 195 | int flags; /* validation flags */ |
| 196 | }; |
| 197 | |
| 198 | /************************************************************************ |
| 199 | * * |
| 200 | * Allocation functions * |
| 201 | * * |
| 202 | ************************************************************************/ |
| 203 | static void xmlRelaxNGFreeDefineList(xmlRelaxNGDefinePtr defines); |
| 204 | static void xmlRelaxNGFreeGrammar(xmlRelaxNGGrammarPtr grammar); |
| 205 | static void xmlRelaxNGFreeDefine(xmlRelaxNGDefinePtr define); |
| 206 | |
| 207 | /** |
| 208 | * xmlRelaxNGNewRelaxNG: |
| 209 | * @ctxt: a Relax-NG validation context (optional) |
| 210 | * |
| 211 | * Allocate a new RelaxNG structure. |
| 212 | * |
| 213 | * Returns the newly allocated structure or NULL in case or error |
| 214 | */ |
| 215 | static xmlRelaxNGPtr |
| 216 | xmlRelaxNGNewRelaxNG(xmlRelaxNGParserCtxtPtr ctxt) |
| 217 | { |
| 218 | xmlRelaxNGPtr ret; |
| 219 | |
| 220 | ret = (xmlRelaxNGPtr) xmlMalloc(sizeof(xmlRelaxNG)); |
| 221 | if (ret == NULL) { |
| 222 | if ((ctxt != NULL) && (ctxt->error != NULL)) |
| 223 | ctxt->error(ctxt->userData, "Out of memory\n"); |
| 224 | ctxt->nbErrors++; |
| 225 | return (NULL); |
| 226 | } |
| 227 | memset(ret, 0, sizeof(xmlRelaxNG)); |
| 228 | |
| 229 | return (ret); |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * xmlRelaxNGFree: |
| 234 | * @schema: a schema structure |
| 235 | * |
| 236 | * Deallocate a RelaxNG structure. |
| 237 | */ |
| 238 | void |
| 239 | xmlRelaxNGFree(xmlRelaxNGPtr schema) |
| 240 | { |
| 241 | if (schema == NULL) |
| 242 | return; |
| 243 | |
| 244 | #if 0 |
| 245 | if (schema->elemDecl != NULL) |
| 246 | xmlHashFree(schema->elemDecl, |
| 247 | (xmlHashDeallocator) xmlRelaxNGFreeElement); |
| 248 | if (schema->typeDecl != NULL) |
| 249 | xmlHashFree(schema->typeDecl, |
| 250 | (xmlHashDeallocator) xmlRelaxNGFreeType); |
| 251 | #endif |
| 252 | |
| 253 | if (schema->topgrammar != NULL) |
| 254 | xmlRelaxNGFreeGrammar(schema->topgrammar); |
| 255 | if (schema->doc != NULL) |
| 256 | xmlFreeDoc(schema->doc); |
| 257 | |
| 258 | xmlFree(schema); |
| 259 | } |
| 260 | |
| 261 | /** |
| 262 | * xmlRelaxNGNewGrammar: |
| 263 | * @ctxt: a Relax-NG validation context (optional) |
| 264 | * |
| 265 | * Allocate a new RelaxNG grammar. |
| 266 | * |
| 267 | * Returns the newly allocated structure or NULL in case or error |
| 268 | */ |
| 269 | static xmlRelaxNGGrammarPtr |
| 270 | xmlRelaxNGNewGrammar(xmlRelaxNGParserCtxtPtr ctxt) |
| 271 | { |
| 272 | xmlRelaxNGGrammarPtr ret; |
| 273 | |
| 274 | ret = (xmlRelaxNGGrammarPtr) xmlMalloc(sizeof(xmlRelaxNGGrammar)); |
| 275 | if (ret == NULL) { |
| 276 | if ((ctxt != NULL) && (ctxt->error != NULL)) |
| 277 | ctxt->error(ctxt->userData, "Out of memory\n"); |
| 278 | ctxt->nbErrors++; |
| 279 | return (NULL); |
| 280 | } |
| 281 | memset(ret, 0, sizeof(xmlRelaxNGGrammar)); |
| 282 | |
| 283 | return (ret); |
| 284 | } |
| 285 | |
| 286 | /** |
| 287 | * xmlRelaxNGFreeGrammar: |
| 288 | * @grammar: a grammar structure |
| 289 | * |
| 290 | * Deallocate a RelaxNG grammar structure. |
| 291 | */ |
| 292 | static void |
| 293 | xmlRelaxNGFreeGrammar(xmlRelaxNGGrammarPtr grammar) |
| 294 | { |
| 295 | if (grammar == NULL) |
| 296 | return; |
| 297 | |
| 298 | if (grammar->start != NULL) |
| 299 | xmlRelaxNGFreeDefine(grammar->start); |
| 300 | if (grammar->refs != NULL) { |
| 301 | xmlHashFree(grammar->refs, NULL); |
| 302 | } |
| 303 | if (grammar->defs != NULL) { |
| 304 | xmlHashFree(grammar->defs, NULL); |
| 305 | } |
| 306 | |
| 307 | xmlFree(grammar); |
| 308 | } |
| 309 | |
| 310 | /** |
| 311 | * xmlRelaxNGNewDefine: |
| 312 | * @ctxt: a Relax-NG validation context |
| 313 | * @node: the node in the input document. |
| 314 | * |
| 315 | * Allocate a new RelaxNG define. |
| 316 | * |
| 317 | * Returns the newly allocated structure or NULL in case or error |
| 318 | */ |
| 319 | static xmlRelaxNGDefinePtr |
| 320 | xmlRelaxNGNewDefine(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) |
| 321 | { |
| 322 | xmlRelaxNGDefinePtr ret; |
| 323 | |
| 324 | ret = (xmlRelaxNGDefinePtr) xmlMalloc(sizeof(xmlRelaxNGDefine)); |
| 325 | if (ret == NULL) { |
| 326 | if ((ctxt != NULL) && (ctxt->error != NULL)) |
| 327 | ctxt->error(ctxt->userData, "Out of memory\n"); |
| 328 | ctxt->nbErrors++; |
| 329 | return (NULL); |
| 330 | } |
| 331 | memset(ret, 0, sizeof(xmlRelaxNGDefine)); |
| 332 | ret->node = node; |
| 333 | |
| 334 | return (ret); |
| 335 | } |
| 336 | |
| 337 | /** |
| 338 | * xmlRelaxNGFreeDefineList: |
| 339 | * @defines: a list of define structures |
| 340 | * |
| 341 | * Deallocate a RelaxNG define structures. |
| 342 | */ |
| 343 | static void |
| 344 | xmlRelaxNGFreeDefineList(xmlRelaxNGDefinePtr defines) |
| 345 | { |
| 346 | xmlRelaxNGDefinePtr next; |
| 347 | |
| 348 | while (defines != NULL) { |
| 349 | next = defines->next; |
| 350 | xmlRelaxNGFreeDefine(defines); |
| 351 | defines = next; |
| 352 | } |
| 353 | } |
| 354 | |
| 355 | /** |
| 356 | * xmlRelaxNGFreeDefine: |
| 357 | * @define: a define structure |
| 358 | * |
| 359 | * Deallocate a RelaxNG define structure. |
| 360 | */ |
| 361 | static void |
| 362 | xmlRelaxNGFreeDefine(xmlRelaxNGDefinePtr define) |
| 363 | { |
| 364 | if (define == NULL) |
| 365 | return; |
| 366 | |
| 367 | if (define->name != NULL) |
| 368 | xmlFree(define->name); |
| 369 | if (define->ns != NULL) |
| 370 | xmlFree(define->ns); |
| 371 | if (define->attrs != NULL) |
| 372 | xmlRelaxNGFreeDefineList(define->attrs); |
| 373 | if (define->content != NULL) |
| 374 | xmlRelaxNGFreeDefineList(define->content); |
| 375 | xmlFree(define); |
| 376 | } |
| 377 | |
| 378 | /** |
| 379 | * xmlRelaxNGNewValidState: |
| 380 | * @ctxt: a Relax-NG validation context |
| 381 | * @node: the current node or NULL for the document |
| 382 | * |
| 383 | * Allocate a new RelaxNG validation state |
| 384 | * |
| 385 | * Returns the newly allocated structure or NULL in case or error |
| 386 | */ |
| 387 | static xmlRelaxNGValidStatePtr |
| 388 | xmlRelaxNGNewValidState(xmlRelaxNGValidCtxtPtr ctxt, xmlNodePtr node) |
| 389 | { |
| 390 | xmlRelaxNGValidStatePtr ret; |
| 391 | xmlAttrPtr attr; |
| 392 | xmlAttrPtr attrs[MAX_ATTR]; |
| 393 | int nbAttrs = 0; |
| 394 | xmlNodePtr root = NULL; |
| 395 | |
| 396 | if (node == NULL) { |
| 397 | root = xmlDocGetRootElement(ctxt->doc); |
| 398 | if (root == NULL) |
| 399 | return(NULL); |
| 400 | } else { |
| 401 | attr = node->properties; |
| 402 | while (attr != NULL) { |
| 403 | if (nbAttrs < MAX_ATTR) |
| 404 | attrs[nbAttrs++] = attr; |
| 405 | else |
| 406 | nbAttrs++; |
| 407 | attr = attr->next; |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | if (nbAttrs < MAX_ATTR) |
| 412 | attrs[nbAttrs] = NULL; |
| 413 | ret = (xmlRelaxNGValidStatePtr) xmlMalloc(sizeof(xmlRelaxNGValidState) + |
| 414 | nbAttrs * sizeof(xmlAttrPtr)); |
| 415 | if (ret == NULL) { |
| 416 | if ((ctxt != NULL) && (ctxt->error != NULL)) |
| 417 | ctxt->error(ctxt->userData, "Out of memory\n"); |
| 418 | return (NULL); |
| 419 | } |
| 420 | if (node == NULL) { |
| 421 | ret->node = (xmlNodePtr) ctxt->doc; |
| 422 | ret->seq = root; |
| 423 | ret->nbAttrs = 0; |
| 424 | } else { |
| 425 | ret->node = node; |
| 426 | ret->seq = node->children; |
| 427 | ret->nbAttrs = nbAttrs; |
| 428 | if (nbAttrs > 0) { |
| 429 | if (nbAttrs < MAX_ATTR) { |
| 430 | memcpy(&(ret->attrs[0]), attrs, |
| 431 | sizeof(xmlAttrPtr) * (nbAttrs + 1)); |
| 432 | } else { |
| 433 | attr = node->properties; |
| 434 | nbAttrs = 0; |
| 435 | while (attr != NULL) { |
| 436 | ret->attrs[nbAttrs++] = attr; |
| 437 | attr = attr->next; |
| 438 | } |
| 439 | ret->attrs[nbAttrs] = NULL; |
| 440 | } |
| 441 | } |
| 442 | } |
| 443 | return (ret); |
| 444 | } |
| 445 | |
| 446 | /** |
| 447 | * xmlRelaxNGCopyValidState: |
| 448 | * @ctxt: a Relax-NG validation context |
| 449 | * @state: a validation state |
| 450 | * |
| 451 | * Copy the validation state |
| 452 | * |
| 453 | * Returns the newly allocated structure or NULL in case or error |
| 454 | */ |
| 455 | static xmlRelaxNGValidStatePtr |
| 456 | xmlRelaxNGCopyValidState(xmlRelaxNGValidCtxtPtr ctxt, |
| 457 | xmlRelaxNGValidStatePtr state) |
| 458 | { |
| 459 | xmlRelaxNGValidStatePtr ret; |
| 460 | unsigned int size; |
| 461 | |
| 462 | if (state == NULL) |
| 463 | return(NULL); |
| 464 | |
| 465 | size = sizeof(xmlRelaxNGValidState) + |
| 466 | state->nbAttrs * sizeof(xmlAttrPtr); |
| 467 | ret = (xmlRelaxNGValidStatePtr) xmlMalloc(size); |
| 468 | if (ret == NULL) { |
| 469 | if ((ctxt != NULL) && (ctxt->error != NULL)) |
| 470 | ctxt->error(ctxt->userData, "Out of memory\n"); |
| 471 | return (NULL); |
| 472 | } |
| 473 | memcpy(ret, state, size); |
| 474 | return(ret); |
| 475 | } |
| 476 | |
| 477 | /** |
| 478 | * xmlRelaxNGFreeValidState: |
| 479 | * @state: a validation state structure |
| 480 | * |
| 481 | * Deallocate a RelaxNG validation state structure. |
| 482 | */ |
| 483 | static void |
| 484 | xmlRelaxNGFreeValidState(xmlRelaxNGValidStatePtr state) |
| 485 | { |
| 486 | if (state == NULL) |
| 487 | return; |
| 488 | |
| 489 | xmlFree(state); |
| 490 | } |
| 491 | |
| 492 | /************************************************************************ |
| 493 | * * |
| 494 | * Error functions * |
| 495 | * * |
| 496 | ************************************************************************/ |
| 497 | |
| 498 | #define VALID_CTXT() \ |
| 499 | if (ctxt->flags == 0) xmlGenericError(xmlGenericErrorContext, \ |
| 500 | "error detected at %s:%d\n", \ |
| 501 | __FILE__, __LINE__); |
| 502 | #define VALID_ERROR if (ctxt->flags == 0) printf |
| 503 | |
| 504 | #if 0 |
| 505 | /** |
| 506 | * xmlRelaxNGErrorContext: |
| 507 | * @ctxt: the parsing context |
| 508 | * @schema: the schema being built |
| 509 | * @node: the node being processed |
| 510 | * @child: the child being processed |
| 511 | * |
| 512 | * Dump a RelaxNGType structure |
| 513 | */ |
| 514 | static void |
| 515 | xmlRelaxNGErrorContext(xmlRelaxNGParserCtxtPtr ctxt, xmlRelaxNGPtr schema, |
| 516 | xmlNodePtr node, xmlNodePtr child) |
| 517 | { |
| 518 | int line = 0; |
| 519 | const xmlChar *file = NULL; |
| 520 | const xmlChar *name = NULL; |
| 521 | const char *type = "error"; |
| 522 | |
| 523 | if ((ctxt == NULL) || (ctxt->error == NULL)) |
| 524 | return; |
| 525 | |
| 526 | if (child != NULL) |
| 527 | node = child; |
| 528 | |
| 529 | if (node != NULL) { |
| 530 | if ((node->type == XML_DOCUMENT_NODE) || |
| 531 | (node->type == XML_HTML_DOCUMENT_NODE)) { |
| 532 | xmlDocPtr doc = (xmlDocPtr) node; |
| 533 | |
| 534 | file = doc->URL; |
| 535 | } else { |
| 536 | /* |
| 537 | * Try to find contextual informations to report |
| 538 | */ |
| 539 | if (node->type == XML_ELEMENT_NODE) { |
| 540 | line = (int) node->content; |
| 541 | } else if ((node->prev != NULL) && |
| 542 | (node->prev->type == XML_ELEMENT_NODE)) { |
| 543 | line = (int) node->prev->content; |
| 544 | } else if ((node->parent != NULL) && |
| 545 | (node->parent->type == XML_ELEMENT_NODE)) { |
| 546 | line = (int) node->parent->content; |
| 547 | } |
| 548 | if ((node->doc != NULL) && (node->doc->URL != NULL)) |
| 549 | file = node->doc->URL; |
| 550 | if (node->name != NULL) |
| 551 | name = node->name; |
| 552 | } |
| 553 | } |
| 554 | |
| 555 | if (ctxt != NULL) |
| 556 | type = "compilation error"; |
| 557 | else if (schema != NULL) |
| 558 | type = "runtime error"; |
| 559 | |
| 560 | if ((file != NULL) && (line != 0) && (name != NULL)) |
| 561 | ctxt->error(ctxt->userData, "%s: file %s line %d element %s\n", |
| 562 | type, file, line, name); |
| 563 | else if ((file != NULL) && (name != NULL)) |
| 564 | ctxt->error(ctxt->userData, "%s: file %s element %s\n", |
| 565 | type, file, name); |
| 566 | else if ((file != NULL) && (line != 0)) |
| 567 | ctxt->error(ctxt->userData, "%s: file %s line %d\n", type, file, line); |
| 568 | else if (file != NULL) |
| 569 | ctxt->error(ctxt->userData, "%s: file %s\n", type, file); |
| 570 | else if (name != NULL) |
| 571 | ctxt->error(ctxt->userData, "%s: element %s\n", type, name); |
| 572 | else |
| 573 | ctxt->error(ctxt->userData, "%s\n", type); |
| 574 | } |
| 575 | #endif |
| 576 | |
| 577 | /************************************************************************ |
| 578 | * * |
| 579 | * Type library hooks * |
| 580 | * * |
| 581 | ************************************************************************/ |
| 582 | |
| 583 | static void |
| 584 | xmlRelaxNGInitTypes(void) { |
| 585 | } |
| 586 | |
| 587 | /** |
| 588 | * xmlRelaxNGCleanupTypes: |
| 589 | * |
| 590 | * Cleanup the default Schemas type library associated to RelaxNG |
| 591 | */ |
| 592 | void |
| 593 | xmlRelaxNGCleanupTypes(void) { |
| 594 | xmlSchemaCleanupTypes(); |
| 595 | } |
| 596 | |
| 597 | /************************************************************************ |
| 598 | * * |
| 599 | * Parsing functions * |
| 600 | * * |
| 601 | ************************************************************************/ |
| 602 | |
| 603 | static xmlRelaxNGDefinePtr xmlRelaxNGParseAttribute( |
| 604 | xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node); |
| 605 | static xmlRelaxNGDefinePtr xmlRelaxNGParseElement( |
| 606 | xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node); |
| 607 | static xmlRelaxNGDefinePtr xmlRelaxNGParsePatterns( |
| 608 | xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr nodes); |
| 609 | |
| 610 | |
| 611 | #define IS_BLANK_NODE(n) \ |
| 612 | (((n)->type == XML_TEXT_NODE) && (xmlRelaxNGIsBlank((n)->content))) |
| 613 | |
| 614 | /** |
| 615 | * xmlRelaxNGIsBlank: |
| 616 | * @str: a string |
| 617 | * |
| 618 | * Check if a string is ignorable c.f. 4.2. Whitespace |
| 619 | * |
| 620 | * Returns 1 if the string is NULL or made of blanks chars, 0 otherwise |
| 621 | */ |
| 622 | static int |
| 623 | xmlRelaxNGIsBlank(xmlChar *str) { |
| 624 | if (str == NULL) |
| 625 | return(1); |
| 626 | while (*str != 0) { |
| 627 | if (!(IS_BLANK(*str))) return(0); |
| 628 | str++; |
| 629 | } |
| 630 | return(1); |
| 631 | } |
| 632 | |
| 633 | #if 0 |
| 634 | /** |
| 635 | * xmlRelaxNGGetDataTypeLibrary: |
| 636 | * @ctxt: a Relax-NG parser context |
| 637 | * @node: the current data or value element |
| 638 | * |
| 639 | * Applies algorithm from 4.3. datatypeLibrary attribute |
| 640 | * |
| 641 | * Returns the datatypeLibary value or NULL if not found |
| 642 | */ |
| 643 | static xmlChar * |
| 644 | xmlRelaxNGGetDataTypeLibrary(xmlRelaxNGParserCtxtPtr ctxt ATTRIBUTE_UNUSED, |
| 645 | xmlNodePtr node) { |
| 646 | xmlChar *ret, *escape; |
| 647 | |
| 648 | #ifdef DEBUG |
| 649 | xmlGenericError(xmlGenericErrorContext, |
| 650 | "xmlRelaxNGGetDataTypeLibrary()\n"); |
| 651 | #endif |
| 652 | |
| 653 | if ((IS_RELAXNG(node, "data")) || (IS_RELAXNG(node, "value"))) { |
| 654 | ret = xmlGetProp(node, BAD_CAST "datatypeLibrary"); |
| 655 | if (ret != NULL) { |
| 656 | escape = xmlURIEscapeStr(ret, BAD_CAST ""); |
| 657 | if (escape == NULL) { |
| 658 | return(ret); |
| 659 | } |
| 660 | xmlFree(ret); |
| 661 | return(escape); |
| 662 | } |
| 663 | } |
| 664 | node = node->parent; |
| 665 | while ((node != NULL) && (node->type == XML_ELEMENT_NODE)) { |
| 666 | if (IS_RELAXNG(node, "element")) { |
| 667 | ret = xmlGetProp(node, BAD_CAST "datatypeLibrary"); |
| 668 | if (ret != NULL) { |
| 669 | escape = xmlURIEscapeStr(ret, BAD_CAST ""); |
| 670 | if (escape == NULL) { |
| 671 | return(ret); |
| 672 | } |
| 673 | xmlFree(ret); |
| 674 | return(escape); |
| 675 | } |
| 676 | } |
| 677 | node = node->parent; |
| 678 | } |
| 679 | return(NULL); |
| 680 | } |
| 681 | #endif |
| 682 | |
| 683 | /** |
| 684 | * xmlRelaxNGParsePattern: |
| 685 | * @ctxt: a Relax-NG parser context |
| 686 | * @node: the pattern node. |
| 687 | * |
| 688 | * parse the content of a RelaxNG pattern node. |
| 689 | * |
| 690 | * Returns the definition pointer or NULL in case of error. |
| 691 | */ |
| 692 | static xmlRelaxNGDefinePtr |
| 693 | xmlRelaxNGParsePattern(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) { |
| 694 | xmlRelaxNGDefinePtr def = NULL; |
| 695 | |
| 696 | if (IS_RELAXNG(node, "element")) { |
| 697 | def = xmlRelaxNGParseElement(ctxt, node); |
| 698 | } else if (IS_RELAXNG(node, "attribute")) { |
| 699 | def = xmlRelaxNGParseAttribute(ctxt, node); |
| 700 | } else if (IS_RELAXNG(node, "empty")) { |
| 701 | def = xmlRelaxNGNewDefine(ctxt, node); |
| 702 | if (def == NULL) |
| 703 | return(NULL); |
| 704 | def->type = XML_RELAXNG_EMPTY; |
| 705 | } else if (IS_RELAXNG(node, "text")) { |
| 706 | def = xmlRelaxNGNewDefine(ctxt, node); |
| 707 | if (def == NULL) |
| 708 | return(NULL); |
| 709 | def->type = XML_RELAXNG_TEXT; |
| 710 | if (node->children != NULL) { |
| 711 | if (ctxt->error != NULL) |
| 712 | ctxt->error(ctxt->userData, "text: had a child node\n"); |
| 713 | ctxt->nbErrors++; |
| 714 | } |
| 715 | } else if (IS_RELAXNG(node, "zeroOrMore")) { |
| 716 | def = xmlRelaxNGNewDefine(ctxt, node); |
| 717 | if (def == NULL) |
| 718 | return(NULL); |
| 719 | def->type = XML_RELAXNG_ZEROORMORE; |
| 720 | def->content = xmlRelaxNGParsePatterns(ctxt, node->children); |
| 721 | } else if (IS_RELAXNG(node, "oneOrMore")) { |
| 722 | def = xmlRelaxNGNewDefine(ctxt, node); |
| 723 | if (def == NULL) |
| 724 | return(NULL); |
| 725 | def->type = XML_RELAXNG_ZEROORMORE; |
| 726 | def->content = xmlRelaxNGParsePatterns(ctxt, node->children); |
| 727 | } else if (IS_RELAXNG(node, "optional")) { |
| 728 | def = xmlRelaxNGNewDefine(ctxt, node); |
| 729 | if (def == NULL) |
| 730 | return(NULL); |
| 731 | def->type = XML_RELAXNG_OPTIONAL; |
| 732 | def->content = xmlRelaxNGParsePatterns(ctxt, node->children); |
| 733 | } else if (IS_RELAXNG(node, "choice")) { |
| 734 | def = xmlRelaxNGNewDefine(ctxt, node); |
| 735 | if (def == NULL) |
| 736 | return(NULL); |
| 737 | def->type = XML_RELAXNG_CHOICE; |
| 738 | def->content = xmlRelaxNGParsePatterns(ctxt, node->children); |
| 739 | } else if (IS_RELAXNG(node, "group")) { |
| 740 | def = xmlRelaxNGNewDefine(ctxt, node); |
| 741 | if (def == NULL) |
| 742 | return(NULL); |
| 743 | def->type = XML_RELAXNG_GROUP; |
| 744 | def->content = xmlRelaxNGParsePatterns(ctxt, node->children); |
| 745 | } else if (IS_RELAXNG(node, "ref")) { |
| 746 | def = xmlRelaxNGNewDefine(ctxt, node); |
| 747 | if (def == NULL) |
| 748 | return(NULL); |
| 749 | def->type = XML_RELAXNG_REF; |
| 750 | def->name = xmlGetProp(node, BAD_CAST "name"); |
| 751 | if (def->name == NULL) { |
| 752 | if (ctxt->error != NULL) |
| 753 | ctxt->error(ctxt->userData, |
| 754 | "ref has no name\n"); |
| 755 | ctxt->nbErrors++; |
| 756 | } |
| 757 | if (node->children != NULL) { |
| 758 | if (ctxt->error != NULL) |
| 759 | ctxt->error(ctxt->userData, |
| 760 | "ref is not empty\n"); |
| 761 | ctxt->nbErrors++; |
| 762 | } |
| 763 | if (ctxt->grammar->refs == NULL) |
| 764 | ctxt->grammar->refs = xmlHashCreate(10); |
| 765 | if (ctxt->grammar->refs == NULL) { |
| 766 | if (ctxt->error != NULL) |
| 767 | ctxt->error(ctxt->userData, |
| 768 | "Could not create references hash\n"); |
| 769 | ctxt->nbErrors++; |
| 770 | xmlRelaxNGFreeDefine(def); |
| 771 | def = NULL; |
| 772 | } else { |
| 773 | int tmp; |
| 774 | |
| 775 | tmp = xmlHashAddEntry(ctxt->grammar->refs, def->name, def); |
| 776 | if (tmp < 0) { |
| 777 | xmlRelaxNGDefinePtr prev; |
| 778 | |
| 779 | prev = (xmlRelaxNGDefinePtr) |
| 780 | xmlHashLookup(ctxt->grammar->refs, def->name); |
| 781 | if (prev == NULL) { |
| 782 | if (ctxt->error != NULL) |
| 783 | ctxt->error(ctxt->userData, |
| 784 | "Internal error refs definitions '%s'\n", |
| 785 | def->name); |
| 786 | ctxt->nbErrors++; |
| 787 | xmlRelaxNGFreeDefine(def); |
| 788 | def = NULL; |
| 789 | } else { |
| 790 | def->nextHash = prev->nextHash; |
| 791 | prev->nextHash = def; |
| 792 | } |
| 793 | } |
| 794 | } |
| 795 | } else { |
| 796 | TODO |
| 797 | } |
| 798 | return(def); |
| 799 | } |
| 800 | |
| 801 | /** |
| 802 | * xmlRelaxNGParseAttribute: |
| 803 | * @ctxt: a Relax-NG parser context |
| 804 | * @node: the element node |
| 805 | * |
| 806 | * parse the content of a RelaxNG attribute node. |
| 807 | * |
| 808 | * Returns the definition pointer or NULL in case of error. |
| 809 | */ |
| 810 | static xmlRelaxNGDefinePtr |
| 811 | xmlRelaxNGParseAttribute(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) { |
| 812 | xmlRelaxNGDefinePtr ret, cur, last; |
| 813 | xmlNodePtr child; |
| 814 | xmlChar *val; |
| 815 | int old_flags; |
| 816 | |
| 817 | ret = xmlRelaxNGNewDefine(ctxt, node); |
| 818 | if (ret == NULL) |
| 819 | return(NULL); |
| 820 | ret->type = XML_RELAXNG_ATTRIBUTE; |
| 821 | child = node->children; |
| 822 | if (child == NULL) { |
| 823 | if (ctxt->error != NULL) |
| 824 | ctxt->error(ctxt->userData, |
| 825 | "xmlRelaxNGParseattribute: attribute has no children\n"); |
| 826 | ctxt->nbErrors++; |
| 827 | return(ret); |
| 828 | } |
| 829 | old_flags = ctxt->flags; |
| 830 | ctxt->flags |= XML_RELAXNG_IN_ATTRIBUTE; |
| 831 | if (IS_RELAXNG(child, "name")) { |
| 832 | val = xmlNodeGetContent(child); |
| 833 | ret->name = val; |
| 834 | val = xmlGetProp(child, BAD_CAST "ns"); |
| 835 | ret->ns = val; |
| 836 | } else if (IS_RELAXNG(child, "anyName")) { |
| 837 | TODO |
| 838 | } else if (IS_RELAXNG(child, "nsName")) { |
| 839 | TODO |
| 840 | } else if (IS_RELAXNG(child, "choice")) { |
| 841 | TODO |
| 842 | } else { |
| 843 | if (ctxt->error != NULL) |
| 844 | ctxt->error(ctxt->userData, |
| 845 | "element: expecting name, anyName, nsName or choice : got %s\n", |
| 846 | child->name); |
| 847 | ctxt->nbErrors++; |
| 848 | ctxt->flags = old_flags; |
| 849 | return(ret); |
| 850 | } |
| 851 | child = child->next; |
| 852 | last = NULL; |
| 853 | while (child != NULL) { |
| 854 | cur = xmlRelaxNGParsePattern(ctxt, child); |
| 855 | if (cur != NULL) { |
| 856 | switch (cur->type) { |
| 857 | case XML_RELAXNG_EMPTY: |
| 858 | case XML_RELAXNG_NOT_ALLOWED: |
| 859 | case XML_RELAXNG_TEXT: |
| 860 | case XML_RELAXNG_ELEMENT: |
| 861 | case XML_RELAXNG_DATATYPE: |
| 862 | case XML_RELAXNG_VALUE: |
| 863 | case XML_RELAXNG_LIST: |
| 864 | case XML_RELAXNG_REF: |
| 865 | case XML_RELAXNG_DEF: |
| 866 | case XML_RELAXNG_ONEORMORE: |
| 867 | case XML_RELAXNG_ZEROORMORE: |
| 868 | case XML_RELAXNG_OPTIONAL: |
| 869 | case XML_RELAXNG_CHOICE: |
| 870 | case XML_RELAXNG_GROUP: |
| 871 | case XML_RELAXNG_INTERLEAVE: |
| 872 | if (last == NULL) { |
| 873 | ret->content = last = cur; |
| 874 | } else { |
| 875 | if ((last->type == XML_RELAXNG_ELEMENT) && |
| 876 | (ret->content == last)) { |
| 877 | ret->content = xmlRelaxNGNewDefine(ctxt, node); |
| 878 | if (ret->content != NULL) { |
| 879 | ret->content->type = XML_RELAXNG_GROUP; |
| 880 | ret->content->content = last; |
| 881 | } else { |
| 882 | ret->content = last; |
| 883 | } |
| 884 | } |
| 885 | last->next = cur; |
| 886 | last = cur; |
| 887 | } |
| 888 | break; |
| 889 | case XML_RELAXNG_ATTRIBUTE: |
| 890 | cur->next = ret->attrs; |
| 891 | ret->attrs = cur; |
| 892 | break; |
| 893 | } |
| 894 | } |
| 895 | child = child->next; |
| 896 | } |
| 897 | ctxt->flags = old_flags; |
| 898 | return(ret); |
| 899 | } |
| 900 | |
| 901 | /** |
| 902 | * xmlRelaxNGParseElement: |
| 903 | * @ctxt: a Relax-NG parser context |
| 904 | * @node: the element node |
| 905 | * |
| 906 | * parse the content of a RelaxNG element node. |
| 907 | * |
| 908 | * Returns the definition pointer or NULL in case of error. |
| 909 | */ |
| 910 | static xmlRelaxNGDefinePtr |
| 911 | xmlRelaxNGParseElement(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) { |
| 912 | xmlRelaxNGDefinePtr ret, cur, last; |
| 913 | xmlNodePtr child; |
| 914 | xmlChar *val; |
| 915 | |
| 916 | ret = xmlRelaxNGNewDefine(ctxt, node); |
| 917 | if (ret == NULL) |
| 918 | return(NULL); |
| 919 | ret->type = XML_RELAXNG_ELEMENT; |
| 920 | child = node->children; |
| 921 | if (child == NULL) { |
| 922 | if (ctxt->error != NULL) |
| 923 | ctxt->error(ctxt->userData, |
| 924 | "xmlRelaxNGParseElement: element has no children\n"); |
| 925 | ctxt->nbErrors++; |
| 926 | return(ret); |
| 927 | } |
| 928 | if (IS_RELAXNG(child, "name")) { |
| 929 | val = xmlNodeGetContent(child); |
| 930 | ret->name = val; |
| 931 | val = xmlGetProp(child, BAD_CAST "ns"); |
| 932 | ret->ns = val; |
| 933 | } else if (IS_RELAXNG(child, "anyName")) { |
| 934 | TODO |
| 935 | } else if (IS_RELAXNG(child, "nsName")) { |
| 936 | TODO |
| 937 | } else if (IS_RELAXNG(child, "choice")) { |
| 938 | TODO |
| 939 | } else { |
| 940 | if (ctxt->error != NULL) |
| 941 | ctxt->error(ctxt->userData, |
| 942 | "element: expecting name, anyName, nsName or choice : got %s\n", |
| 943 | child->name); |
| 944 | ctxt->nbErrors++; |
| 945 | return(ret); |
| 946 | } |
| 947 | child = child->next; |
| 948 | if (child == NULL) { |
| 949 | if (ctxt->error != NULL) |
| 950 | ctxt->error(ctxt->userData, |
| 951 | "xmlRelaxNGParseElement: element has no content\n"); |
| 952 | ctxt->nbErrors++; |
| 953 | return(ret); |
| 954 | } |
| 955 | last = NULL; |
| 956 | while (child != NULL) { |
| 957 | cur = xmlRelaxNGParsePattern(ctxt, child); |
| 958 | if (cur != NULL) { |
| 959 | switch (cur->type) { |
| 960 | case XML_RELAXNG_EMPTY: |
| 961 | case XML_RELAXNG_NOT_ALLOWED: |
| 962 | case XML_RELAXNG_TEXT: |
| 963 | case XML_RELAXNG_ELEMENT: |
| 964 | case XML_RELAXNG_DATATYPE: |
| 965 | case XML_RELAXNG_VALUE: |
| 966 | case XML_RELAXNG_LIST: |
| 967 | case XML_RELAXNG_REF: |
| 968 | case XML_RELAXNG_DEF: |
| 969 | case XML_RELAXNG_ZEROORMORE: |
| 970 | case XML_RELAXNG_ONEORMORE: |
| 971 | case XML_RELAXNG_OPTIONAL: |
| 972 | case XML_RELAXNG_CHOICE: |
| 973 | case XML_RELAXNG_GROUP: |
| 974 | case XML_RELAXNG_INTERLEAVE: |
| 975 | if (last == NULL) { |
| 976 | ret->content = last = cur; |
| 977 | } else { |
| 978 | if ((last->type == XML_RELAXNG_ELEMENT) && |
| 979 | (ret->content == last)) { |
| 980 | ret->content = xmlRelaxNGNewDefine(ctxt, node); |
| 981 | if (ret->content != NULL) { |
| 982 | ret->content->type = XML_RELAXNG_GROUP; |
| 983 | ret->content->content = last; |
| 984 | } else { |
| 985 | ret->content = last; |
| 986 | } |
| 987 | } |
| 988 | last->next = cur; |
| 989 | last = cur; |
| 990 | } |
| 991 | break; |
| 992 | case XML_RELAXNG_ATTRIBUTE: |
| 993 | cur->next = ret->attrs; |
| 994 | ret->attrs = cur; |
| 995 | break; |
| 996 | } |
| 997 | } |
| 998 | child = child->next; |
| 999 | } |
| 1000 | return(ret); |
| 1001 | } |
| 1002 | |
| 1003 | /** |
| 1004 | * xmlRelaxNGParsePatterns: |
| 1005 | * @ctxt: a Relax-NG parser context |
| 1006 | * @nodes: list of nodes |
| 1007 | * |
| 1008 | * parse the content of a RelaxNG start node. |
| 1009 | * |
| 1010 | * Returns the definition pointer or NULL in case of error. |
| 1011 | */ |
| 1012 | static xmlRelaxNGDefinePtr |
| 1013 | xmlRelaxNGParsePatterns(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr nodes) { |
| 1014 | xmlRelaxNGDefinePtr def = NULL, last = NULL, cur; |
| 1015 | |
| 1016 | while (nodes != NULL) { |
| 1017 | if (IS_RELAXNG(nodes, "element")) { |
| 1018 | cur = xmlRelaxNGParseElement(ctxt, nodes); |
| 1019 | if (def == NULL) { |
| 1020 | def = last = cur; |
| 1021 | } else { |
| 1022 | if ((def->type == XML_RELAXNG_ELEMENT) && (def == last)) { |
| 1023 | def = xmlRelaxNGNewDefine(ctxt, nodes); |
| 1024 | def->type = XML_RELAXNG_GROUP; |
| 1025 | def->content = last; |
| 1026 | } |
| 1027 | last->next = cur; |
| 1028 | last = cur; |
| 1029 | } |
| 1030 | } else { |
| 1031 | cur = xmlRelaxNGParsePattern(ctxt, nodes); |
| 1032 | if (def == NULL) { |
| 1033 | def = last = cur; |
| 1034 | } else { |
| 1035 | last->next = cur; |
| 1036 | last = cur; |
| 1037 | } |
| 1038 | } |
| 1039 | nodes = nodes->next; |
| 1040 | } |
| 1041 | return(def); |
| 1042 | } |
| 1043 | |
| 1044 | /** |
| 1045 | * xmlRelaxNGParseStart: |
| 1046 | * @ctxt: a Relax-NG parser context |
| 1047 | * @nodes: start children nodes |
| 1048 | * |
| 1049 | * parse the content of a RelaxNG start node. |
| 1050 | * |
| 1051 | * Returns 0 in case of success, -1 in case of error |
| 1052 | */ |
| 1053 | static int |
| 1054 | xmlRelaxNGParseStart(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr nodes) { |
| 1055 | int ret = 0; |
| 1056 | xmlRelaxNGDefinePtr def = NULL; |
| 1057 | |
| 1058 | while (nodes != NULL) { |
| 1059 | if (IS_RELAXNG(nodes, "empty")) { |
| 1060 | TODO |
| 1061 | xmlElemDump(stdout, nodes->doc, nodes); |
| 1062 | } else if (IS_RELAXNG(nodes, "notAllowed")) { |
| 1063 | TODO |
| 1064 | xmlElemDump(stdout, nodes->doc, nodes); |
| 1065 | } else { |
| 1066 | def = xmlRelaxNGParsePatterns(ctxt, nodes); |
| 1067 | ctxt->grammar->start = def; |
| 1068 | } |
| 1069 | nodes = nodes->next; |
| 1070 | } |
| 1071 | return(ret); |
| 1072 | } |
| 1073 | |
| 1074 | /** |
| 1075 | * xmlRelaxNGParseGrammarContent: |
| 1076 | * @ctxt: a Relax-NG parser context |
| 1077 | * @nodes: grammar children nodes |
| 1078 | * |
| 1079 | * parse the content of a RelaxNG grammar node. |
| 1080 | * |
| 1081 | * Returns 0 in case of success, -1 in case of error |
| 1082 | */ |
| 1083 | static int |
| 1084 | xmlRelaxNGParseGrammarContent(xmlRelaxNGParserCtxtPtr ctxt |
| 1085 | ATTRIBUTE_UNUSED, xmlNodePtr nodes) |
| 1086 | { |
| 1087 | int ret = 0, tmp; |
| 1088 | xmlRelaxNGDefinePtr def; |
| 1089 | xmlChar *name; |
| 1090 | |
| 1091 | if (nodes == NULL) { |
| 1092 | if (ctxt->error != NULL) |
| 1093 | ctxt->error(ctxt->userData, |
| 1094 | "grammar has no children\n"); |
| 1095 | ctxt->nbErrors++; |
| 1096 | return(-1); |
| 1097 | } |
| 1098 | if (IS_RELAXNG(nodes, "start")) { |
| 1099 | if (nodes->children == NULL) { |
| 1100 | if (ctxt->error != NULL) |
| 1101 | ctxt->error(ctxt->userData, |
| 1102 | "grammar has no children\n"); |
| 1103 | ctxt->nbErrors++; |
| 1104 | } else { |
| 1105 | xmlRelaxNGParseStart(ctxt, nodes->children); |
| 1106 | } |
| 1107 | nodes = nodes->next; |
| 1108 | } else { |
| 1109 | if (ctxt->error != NULL) |
| 1110 | ctxt->error(ctxt->userData, |
| 1111 | "grammar first child must be a <start>\n"); |
| 1112 | ctxt->nbErrors++; |
| 1113 | return(-1); |
| 1114 | } |
| 1115 | while (nodes != NULL) { |
| 1116 | if (IS_RELAXNG(nodes, "define")) { |
| 1117 | name = xmlGetProp(nodes, BAD_CAST "name"); |
| 1118 | if (name == NULL) { |
| 1119 | if (ctxt->error != NULL) |
| 1120 | ctxt->error(ctxt->userData, |
| 1121 | "define has no name\n"); |
| 1122 | ctxt->nbErrors++; |
| 1123 | } else { |
| 1124 | def = xmlRelaxNGNewDefine(ctxt, nodes); |
| 1125 | if (def == NULL) |
| 1126 | break; |
| 1127 | def->type = XML_RELAXNG_DEF; |
| 1128 | def->name = name; |
| 1129 | if (nodes->children == NULL) { |
| 1130 | if (ctxt->error != NULL) |
| 1131 | ctxt->error(ctxt->userData, |
| 1132 | "define has no children\n"); |
| 1133 | ctxt->nbErrors++; |
| 1134 | } else { |
| 1135 | def->content = xmlRelaxNGParsePatterns(ctxt, |
| 1136 | nodes->children); |
| 1137 | } |
| 1138 | if (ctxt->grammar->defs == NULL) |
| 1139 | ctxt->grammar->defs = xmlHashCreate(10); |
| 1140 | if (ctxt->grammar->defs == NULL) { |
| 1141 | if (ctxt->error != NULL) |
| 1142 | ctxt->error(ctxt->userData, |
| 1143 | "Could not create definition hash\n"); |
| 1144 | ctxt->nbErrors++; |
| 1145 | ret = -1; |
| 1146 | xmlRelaxNGFreeDefine(def); |
| 1147 | } else { |
| 1148 | tmp = xmlHashAddEntry(ctxt->grammar->defs, name, def); |
| 1149 | if (tmp < 0) { |
| 1150 | TODO |
| 1151 | /* store and implement 4.17 on combining */ |
| 1152 | ctxt->nbErrors++; |
| 1153 | ret = -1; |
| 1154 | xmlRelaxNGFreeDefine(def); |
| 1155 | } |
| 1156 | } |
| 1157 | } |
| 1158 | } else { |
| 1159 | if (ctxt->error != NULL) |
| 1160 | ctxt->error(ctxt->userData, |
| 1161 | "grammar allows onlys <define> child after <start>\n"); |
| 1162 | ctxt->nbErrors++; |
| 1163 | ret = -1; |
| 1164 | } |
| 1165 | nodes = nodes->next; |
| 1166 | } |
| 1167 | return (ret); |
| 1168 | } |
| 1169 | |
| 1170 | /** |
| 1171 | * xmlRelaxNGCheckReference: |
| 1172 | * @ref: the ref |
| 1173 | * @ctxt: a Relax-NG parser context |
| 1174 | * @name: the name associated to the defines |
| 1175 | * |
| 1176 | * Applies the 4.17. combine attribute rule for all the define |
| 1177 | * element of a given grammar using the same name. |
| 1178 | */ |
| 1179 | static void |
| 1180 | xmlRelaxNGCheckReference(xmlRelaxNGDefinePtr ref, |
| 1181 | xmlRelaxNGParserCtxtPtr ctxt, const xmlChar *name) { |
| 1182 | xmlRelaxNGGrammarPtr grammar; |
| 1183 | xmlRelaxNGDefinePtr def; |
| 1184 | |
| 1185 | grammar = ctxt->grammar; |
| 1186 | if (grammar == NULL) { |
| 1187 | if (ctxt->error != NULL) |
| 1188 | ctxt->error(ctxt->userData, |
| 1189 | "Internal error: no grammar in CheckReference %s\n", |
| 1190 | name); |
| 1191 | ctxt->nbErrors++; |
| 1192 | return; |
| 1193 | } |
| 1194 | if (ref->content != NULL) { |
| 1195 | if (ctxt->error != NULL) |
| 1196 | ctxt->error(ctxt->userData, |
| 1197 | "Internal error: reference has content in CheckReference %s\n", |
| 1198 | name); |
| 1199 | ctxt->nbErrors++; |
| 1200 | return; |
| 1201 | } |
| 1202 | if (grammar->defs != NULL) { |
| 1203 | def = xmlHashLookup(grammar->defs, name); |
| 1204 | if (def != NULL) { |
| 1205 | ref->content = def; |
| 1206 | } else { |
| 1207 | TODO |
| 1208 | } |
| 1209 | } |
| 1210 | /* |
| 1211 | * TODO: make a closure and verify there is no loop ! |
| 1212 | */ |
| 1213 | } |
| 1214 | |
| 1215 | /** |
| 1216 | * xmlRelaxNGCheckCombine: |
| 1217 | * @define: the define(s) list |
| 1218 | * @ctxt: a Relax-NG parser context |
| 1219 | * @name: the name associated to the defines |
| 1220 | * |
| 1221 | * Applies the 4.17. combine attribute rule for all the define |
| 1222 | * element of a given grammar using the same name. |
| 1223 | */ |
| 1224 | static void |
| 1225 | xmlRelaxNGCheckCombine(xmlRelaxNGDefinePtr define, |
| 1226 | xmlRelaxNGParserCtxtPtr ctxt, const xmlChar *name) { |
| 1227 | xmlChar *combine; |
| 1228 | int choiceOrInterleave = -1; |
| 1229 | int missing = 0; |
| 1230 | xmlRelaxNGDefinePtr cur, last, tmp, tmp2; |
| 1231 | |
| 1232 | if (define->nextHash == NULL) |
| 1233 | return; |
| 1234 | cur = define; |
| 1235 | while (cur != NULL) { |
| 1236 | combine = xmlGetProp(cur->node, BAD_CAST "combine"); |
| 1237 | if (combine != NULL) { |
| 1238 | if (xmlStrEqual(combine, BAD_CAST "choice")) { |
| 1239 | if (choiceOrInterleave == -1) |
| 1240 | choiceOrInterleave = 1; |
| 1241 | else if (choiceOrInterleave == 0) { |
| 1242 | if (ctxt->error != NULL) |
| 1243 | ctxt->error(ctxt->userData, |
| 1244 | "Defines for %s use both 'choice' and 'interleave'\n", |
| 1245 | name); |
| 1246 | ctxt->nbErrors++; |
| 1247 | } |
| 1248 | } else if (xmlStrEqual(combine, BAD_CAST "choice")) { |
| 1249 | if (choiceOrInterleave == -1) |
| 1250 | choiceOrInterleave = 0; |
| 1251 | else if (choiceOrInterleave == 1) { |
| 1252 | if (ctxt->error != NULL) |
| 1253 | ctxt->error(ctxt->userData, |
| 1254 | "Defines for %s use both 'choice' and 'interleave'\n", |
| 1255 | name); |
| 1256 | ctxt->nbErrors++; |
| 1257 | } |
| 1258 | } else { |
| 1259 | if (ctxt->error != NULL) |
| 1260 | ctxt->error(ctxt->userData, |
| 1261 | "Defines for %s use unknown combine value '%s''\n", |
| 1262 | name, combine); |
| 1263 | ctxt->nbErrors++; |
| 1264 | } |
| 1265 | xmlFree(combine); |
| 1266 | } else { |
| 1267 | if (missing == 0) |
| 1268 | missing = 1; |
| 1269 | else { |
| 1270 | if (ctxt->error != NULL) |
| 1271 | ctxt->error(ctxt->userData, |
| 1272 | "Some defines for %s lacks the combine attribute\n", |
| 1273 | name); |
| 1274 | ctxt->nbErrors++; |
| 1275 | } |
| 1276 | } |
| 1277 | |
| 1278 | cur = cur->nextHash; |
| 1279 | } |
| 1280 | #ifdef DEBUG |
| 1281 | xmlGenericError(xmlGenericErrorContext, |
| 1282 | "xmlRelaxNGCheckCombine(): merging %s defines: %d\n", |
| 1283 | name, choiceOrInterleave); |
| 1284 | #endif |
| 1285 | if (choiceOrInterleave == -1) |
| 1286 | choiceOrInterleave = 0; |
| 1287 | cur = xmlRelaxNGNewDefine(ctxt, define->node); |
| 1288 | if (cur == NULL) |
| 1289 | return; |
| 1290 | if (choiceOrInterleave == 0) |
| 1291 | cur->type = XML_RELAXNG_CHOICE; |
| 1292 | else |
| 1293 | cur->type = XML_RELAXNG_INTERLEAVE; |
| 1294 | tmp = define; |
| 1295 | last = NULL; |
| 1296 | while (tmp != NULL) { |
| 1297 | if (tmp->content != NULL) { |
| 1298 | if (tmp->content->next != NULL) { |
| 1299 | /* |
| 1300 | * we need first to create a wrapper. |
| 1301 | */ |
| 1302 | tmp2 = xmlRelaxNGNewDefine(ctxt, tmp->content->node); |
| 1303 | if (tmp2 == NULL) |
| 1304 | break; |
| 1305 | tmp2->type = XML_RELAXNG_GROUP; |
| 1306 | tmp2->content = tmp->content; |
| 1307 | } else { |
| 1308 | tmp2 = tmp->content; |
| 1309 | } |
| 1310 | if (last == NULL) { |
| 1311 | cur->content = tmp2; |
| 1312 | } else { |
| 1313 | last->next = tmp2; |
| 1314 | } |
| 1315 | last = tmp2; |
| 1316 | tmp->content = NULL; |
| 1317 | } |
| 1318 | tmp = tmp->nextHash; |
| 1319 | } |
| 1320 | define->content = cur; |
| 1321 | } |
| 1322 | |
| 1323 | /** |
| 1324 | * xmlRelaxNGCombineStart: |
| 1325 | * @ctxt: a Relax-NG parser context |
| 1326 | * @grammar: the grammar |
| 1327 | * |
| 1328 | * Applies the 4.17. combine rule for all the start |
| 1329 | * element of a given grammar. |
| 1330 | */ |
| 1331 | static void |
| 1332 | xmlRelaxNGCombineStart(xmlRelaxNGParserCtxtPtr ctxt, |
| 1333 | xmlRelaxNGGrammarPtr grammar) { |
| 1334 | xmlRelaxNGDefinePtr starts; |
| 1335 | xmlChar *combine; |
| 1336 | int choiceOrInterleave = -1; |
| 1337 | int missing = 0; |
| 1338 | xmlRelaxNGDefinePtr cur, last, tmp, tmp2; |
| 1339 | |
| 1340 | starts = grammar->start; |
| 1341 | if (starts->nextHash == NULL) |
| 1342 | return; |
| 1343 | cur = starts; |
| 1344 | while (cur != NULL) { |
| 1345 | combine = xmlGetProp(cur->node, BAD_CAST "combine"); |
| 1346 | if (combine != NULL) { |
| 1347 | if (xmlStrEqual(combine, BAD_CAST "choice")) { |
| 1348 | if (choiceOrInterleave == -1) |
| 1349 | choiceOrInterleave = 1; |
| 1350 | else if (choiceOrInterleave == 0) { |
| 1351 | if (ctxt->error != NULL) |
| 1352 | ctxt->error(ctxt->userData, |
| 1353 | "<start> use both 'choice' and 'interleave'\n"); |
| 1354 | ctxt->nbErrors++; |
| 1355 | } |
| 1356 | } else if (xmlStrEqual(combine, BAD_CAST "choice")) { |
| 1357 | if (choiceOrInterleave == -1) |
| 1358 | choiceOrInterleave = 0; |
| 1359 | else if (choiceOrInterleave == 1) { |
| 1360 | if (ctxt->error != NULL) |
| 1361 | ctxt->error(ctxt->userData, |
| 1362 | "<start> use both 'choice' and 'interleave'\n"); |
| 1363 | ctxt->nbErrors++; |
| 1364 | } |
| 1365 | } else { |
| 1366 | if (ctxt->error != NULL) |
| 1367 | ctxt->error(ctxt->userData, |
| 1368 | "<start> uses unknown combine value '%s''\n", combine); |
| 1369 | ctxt->nbErrors++; |
| 1370 | } |
| 1371 | xmlFree(combine); |
| 1372 | } else { |
| 1373 | if (missing == 0) |
| 1374 | missing = 1; |
| 1375 | else { |
| 1376 | if (ctxt->error != NULL) |
| 1377 | ctxt->error(ctxt->userData, |
| 1378 | "Some <start> elements lacks the combine attribute\n"); |
| 1379 | ctxt->nbErrors++; |
| 1380 | } |
| 1381 | } |
| 1382 | |
| 1383 | cur = cur->nextHash; |
| 1384 | } |
| 1385 | #ifdef DEBUG |
| 1386 | xmlGenericError(xmlGenericErrorContext, |
| 1387 | "xmlRelaxNGCombineStart(): merging <start>: %d\n", |
| 1388 | choiceOrInterleave); |
| 1389 | #endif |
| 1390 | if (choiceOrInterleave == -1) |
| 1391 | choiceOrInterleave = 0; |
| 1392 | cur = xmlRelaxNGNewDefine(ctxt, starts->node); |
| 1393 | if (cur == NULL) |
| 1394 | return; |
| 1395 | if (choiceOrInterleave == 0) |
| 1396 | cur->type = XML_RELAXNG_CHOICE; |
| 1397 | else |
| 1398 | cur->type = XML_RELAXNG_INTERLEAVE; |
| 1399 | tmp = starts; |
| 1400 | last = NULL; |
| 1401 | while (tmp != NULL) { |
| 1402 | if (tmp->content != NULL) { |
| 1403 | if (tmp->content->next != NULL) { |
| 1404 | /* |
| 1405 | * we need first to create a wrapper. |
| 1406 | */ |
| 1407 | tmp2 = xmlRelaxNGNewDefine(ctxt, tmp->content->node); |
| 1408 | if (tmp2 == NULL) |
| 1409 | break; |
| 1410 | tmp2->type = XML_RELAXNG_GROUP; |
| 1411 | tmp2->content = tmp->content; |
| 1412 | } else { |
| 1413 | tmp2 = tmp->content; |
| 1414 | } |
| 1415 | if (last == NULL) { |
| 1416 | cur->content = tmp2; |
| 1417 | } else { |
| 1418 | last->next = tmp2; |
| 1419 | } |
| 1420 | last = tmp2; |
| 1421 | tmp->content = NULL; |
| 1422 | } |
| 1423 | tmp = tmp->nextHash; |
| 1424 | } |
| 1425 | starts->content = cur; |
| 1426 | } |
| 1427 | |
| 1428 | /** |
| 1429 | * xmlRelaxNGParseGrammar: |
| 1430 | * @ctxt: a Relax-NG parser context |
| 1431 | * @nodes: grammar children nodes |
| 1432 | * |
| 1433 | * parse a Relax-NG <grammar> node |
| 1434 | * |
| 1435 | * Returns the internal xmlRelaxNGGrammarPtr built or |
| 1436 | * NULL in case of error |
| 1437 | */ |
| 1438 | static xmlRelaxNGGrammarPtr |
| 1439 | xmlRelaxNGParseGrammar(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr nodes) { |
| 1440 | xmlRelaxNGGrammarPtr ret, tmp, old; |
| 1441 | |
| 1442 | #ifdef DEBUG |
| 1443 | xmlGenericError(xmlGenericErrorContext, |
| 1444 | "xmlRelaxNGParseGrammar()\n"); |
| 1445 | #endif |
| 1446 | ret = xmlRelaxNGNewGrammar(ctxt); |
| 1447 | if (ret == NULL) |
| 1448 | return(NULL); |
| 1449 | |
| 1450 | /* |
| 1451 | * Link the new grammar in the tree |
| 1452 | */ |
| 1453 | ret->parent = ctxt->grammar; |
| 1454 | if (ctxt->grammar != NULL) { |
| 1455 | tmp = ctxt->grammar->children; |
| 1456 | if (tmp == NULL) { |
| 1457 | ctxt->grammar->children = ret; |
| 1458 | } else { |
| 1459 | while (tmp->next != NULL) |
| 1460 | tmp = tmp->next; |
| 1461 | tmp->next = ret; |
| 1462 | } |
| 1463 | } |
| 1464 | |
| 1465 | old = ctxt->grammar; |
| 1466 | ctxt->grammar = ret; |
| 1467 | xmlRelaxNGParseGrammarContent(ctxt, nodes); |
| 1468 | ctxt->grammar = ret; |
| 1469 | |
| 1470 | /* |
| 1471 | * Apply 4.17 mergingd rules to defines and starts |
| 1472 | */ |
| 1473 | xmlRelaxNGCombineStart(ctxt, ret); |
| 1474 | if (ret->defs != NULL) { |
| 1475 | xmlHashScan(ret->defs, (xmlHashScanner) xmlRelaxNGCheckCombine, |
| 1476 | ctxt); |
| 1477 | } |
| 1478 | |
| 1479 | /* |
| 1480 | * link together defines and refs in this grammar |
| 1481 | */ |
| 1482 | if (ret->refs != NULL) { |
| 1483 | xmlHashScan(ret->refs, (xmlHashScanner) xmlRelaxNGCheckReference, |
| 1484 | ctxt); |
| 1485 | } |
| 1486 | ctxt->grammar = old; |
| 1487 | return(ret); |
| 1488 | } |
| 1489 | |
| 1490 | /** |
| 1491 | * xmlRelaxNGParseDocument: |
| 1492 | * @ctxt: a Relax-NG parser context |
| 1493 | * @node: the root node of the RelaxNG schema |
| 1494 | * |
| 1495 | * parse a Relax-NG definition resource and build an internal |
| 1496 | * xmlRelaxNG struture which can be used to validate instances. |
| 1497 | * |
| 1498 | * Returns the internal XML RelaxNG structure built or |
| 1499 | * NULL in case of error |
| 1500 | */ |
| 1501 | static xmlRelaxNGPtr |
| 1502 | xmlRelaxNGParseDocument(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) { |
| 1503 | xmlRelaxNGPtr schema = NULL; |
| 1504 | |
| 1505 | if ((ctxt == NULL) || (node == NULL)) |
| 1506 | return (NULL); |
| 1507 | |
| 1508 | schema = xmlRelaxNGNewRelaxNG(ctxt); |
| 1509 | if (schema == NULL) |
| 1510 | return(NULL); |
| 1511 | |
| 1512 | if (IS_RELAXNG(node, "grammar")) { |
| 1513 | schema->topgrammar = xmlRelaxNGParseGrammar(ctxt, node->children); |
| 1514 | } else { |
| 1515 | schema->topgrammar = xmlRelaxNGNewGrammar(ctxt); |
| 1516 | if (schema->topgrammar == NULL) { |
| 1517 | return(schema); |
| 1518 | } |
| 1519 | schema->topgrammar->parent = NULL; |
| 1520 | ctxt->grammar = schema->topgrammar; |
| 1521 | xmlRelaxNGParseStart(ctxt, node); |
| 1522 | } |
| 1523 | |
| 1524 | #ifdef DEBUG |
| 1525 | if (schema == NULL) |
| 1526 | xmlGenericError(xmlGenericErrorContext, |
| 1527 | "xmlRelaxNGParseDocument() failed\n"); |
| 1528 | #endif |
| 1529 | |
| 1530 | return (schema); |
| 1531 | } |
| 1532 | |
| 1533 | /************************************************************************ |
| 1534 | * * |
| 1535 | * Reading RelaxNGs * |
| 1536 | * * |
| 1537 | ************************************************************************/ |
| 1538 | |
| 1539 | /** |
| 1540 | * xmlRelaxNGNewParserCtxt: |
| 1541 | * @URL: the location of the schema |
| 1542 | * |
| 1543 | * Create an XML RelaxNGs parse context for that file/resource expected |
| 1544 | * to contain an XML RelaxNGs file. |
| 1545 | * |
| 1546 | * Returns the parser context or NULL in case of error |
| 1547 | */ |
| 1548 | xmlRelaxNGParserCtxtPtr |
| 1549 | xmlRelaxNGNewParserCtxt(const char *URL) { |
| 1550 | xmlRelaxNGParserCtxtPtr ret; |
| 1551 | |
| 1552 | if (URL == NULL) |
| 1553 | return(NULL); |
| 1554 | |
| 1555 | ret = (xmlRelaxNGParserCtxtPtr) xmlMalloc(sizeof(xmlRelaxNGParserCtxt)); |
| 1556 | if (ret == NULL) { |
| 1557 | xmlGenericError(xmlGenericErrorContext, |
| 1558 | "Failed to allocate new schama parser context for %s\n", URL); |
| 1559 | return (NULL); |
| 1560 | } |
| 1561 | memset(ret, 0, sizeof(xmlRelaxNGParserCtxt)); |
| 1562 | ret->URL = xmlStrdup((const xmlChar *)URL); |
| 1563 | return (ret); |
| 1564 | } |
| 1565 | |
| 1566 | /** |
| 1567 | * xmlRelaxNGNewMemParserCtxt: |
| 1568 | * @buffer: a pointer to a char array containing the schemas |
| 1569 | * @size: the size of the array |
| 1570 | * |
| 1571 | * Create an XML RelaxNGs parse context for that memory buffer expected |
| 1572 | * to contain an XML RelaxNGs file. |
| 1573 | * |
| 1574 | * Returns the parser context or NULL in case of error |
| 1575 | */ |
| 1576 | xmlRelaxNGParserCtxtPtr |
| 1577 | xmlRelaxNGNewMemParserCtxt(const char *buffer, int size) { |
| 1578 | xmlRelaxNGParserCtxtPtr ret; |
| 1579 | |
| 1580 | if ((buffer == NULL) || (size <= 0)) |
| 1581 | return(NULL); |
| 1582 | |
| 1583 | ret = (xmlRelaxNGParserCtxtPtr) xmlMalloc(sizeof(xmlRelaxNGParserCtxt)); |
| 1584 | if (ret == NULL) { |
| 1585 | xmlGenericError(xmlGenericErrorContext, |
| 1586 | "Failed to allocate new schama parser context\n"); |
| 1587 | return (NULL); |
| 1588 | } |
| 1589 | memset(ret, 0, sizeof(xmlRelaxNGParserCtxt)); |
| 1590 | ret->buffer = buffer; |
| 1591 | ret->size = size; |
| 1592 | return (ret); |
| 1593 | } |
| 1594 | |
| 1595 | /** |
| 1596 | * xmlRelaxNGFreeParserCtxt: |
| 1597 | * @ctxt: the schema parser context |
| 1598 | * |
| 1599 | * Free the resources associated to the schema parser context |
| 1600 | */ |
| 1601 | void |
| 1602 | xmlRelaxNGFreeParserCtxt(xmlRelaxNGParserCtxtPtr ctxt) { |
| 1603 | if (ctxt == NULL) |
| 1604 | return; |
| 1605 | if (ctxt->URL != NULL) |
| 1606 | xmlFree(ctxt->URL); |
| 1607 | if (ctxt->doc != NULL) |
| 1608 | xmlFreeDoc(ctxt->doc); |
| 1609 | xmlFree(ctxt); |
| 1610 | } |
| 1611 | |
| 1612 | |
| 1613 | /** |
| 1614 | * xmlRelaxNGParse: |
| 1615 | * @ctxt: a Relax-NG validation context |
| 1616 | * |
| 1617 | * parse a schema definition resource and build an internal |
| 1618 | * XML Shema struture which can be used to validate instances. |
| 1619 | * *WARNING* this interface is highly subject to change |
| 1620 | * |
| 1621 | * Returns the internal XML RelaxNG structure built from the resource or |
| 1622 | * NULL in case of error |
| 1623 | */ |
| 1624 | xmlRelaxNGPtr |
| 1625 | xmlRelaxNGParse(xmlRelaxNGParserCtxtPtr ctxt) |
| 1626 | { |
| 1627 | xmlRelaxNGPtr ret = NULL; |
| 1628 | xmlDocPtr doc; |
| 1629 | xmlNodePtr root, cur, delete; |
| 1630 | |
| 1631 | xmlRelaxNGInitTypes(); |
| 1632 | |
| 1633 | if (ctxt == NULL) |
| 1634 | return (NULL); |
| 1635 | |
| 1636 | /* |
| 1637 | * First step is to parse the input document into an DOM/Infoset |
| 1638 | */ |
| 1639 | if (ctxt->URL != NULL) { |
| 1640 | doc = xmlParseFile((const char *) ctxt->URL); |
| 1641 | if (doc == NULL) { |
| 1642 | if (ctxt->error != NULL) |
| 1643 | ctxt->error(ctxt->userData, |
| 1644 | "xmlRelaxNGParse: could not load %s\n", ctxt->URL); |
| 1645 | ctxt->nbErrors++; |
| 1646 | return (NULL); |
| 1647 | } |
| 1648 | } else if (ctxt->buffer != NULL) { |
| 1649 | doc = xmlParseMemory(ctxt->buffer, ctxt->size); |
| 1650 | if (doc == NULL) { |
| 1651 | if (ctxt->error != NULL) |
| 1652 | ctxt->error(ctxt->userData, |
| 1653 | "xmlRelaxNGParse: could not parse schemas\n"); |
| 1654 | ctxt->nbErrors++; |
| 1655 | return (NULL); |
| 1656 | } |
| 1657 | doc->URL = xmlStrdup(BAD_CAST "in_memory_buffer"); |
| 1658 | ctxt->URL = xmlStrdup(BAD_CAST "in_memory_buffer"); |
| 1659 | } else { |
| 1660 | if (ctxt->error != NULL) |
| 1661 | ctxt->error(ctxt->userData, |
| 1662 | "xmlRelaxNGParse: nothing to parse\n"); |
| 1663 | ctxt->nbErrors++; |
| 1664 | return (NULL); |
| 1665 | } |
| 1666 | ctxt->doc = doc; |
| 1667 | |
| 1668 | /* |
| 1669 | * Then extract the root and RelaxNG parse it |
| 1670 | */ |
| 1671 | root = xmlDocGetRootElement(doc); |
| 1672 | if (root == NULL) { |
| 1673 | if (ctxt->error != NULL) |
| 1674 | ctxt->error(ctxt->userData, "xmlRelaxNGParse: %s is empty\n", |
| 1675 | ctxt->URL); |
| 1676 | ctxt->nbErrors++; |
| 1677 | return (NULL); |
| 1678 | } |
| 1679 | |
| 1680 | /* |
| 1681 | * Remove all the blank text nodes |
| 1682 | */ |
| 1683 | delete = NULL; |
| 1684 | cur = root; |
| 1685 | while (cur != NULL) { |
| 1686 | if (delete != NULL) { |
| 1687 | xmlUnlinkNode(delete); |
| 1688 | xmlFreeNode(delete); |
| 1689 | delete = NULL; |
| 1690 | } |
| 1691 | if (cur->type == XML_ELEMENT_NODE) { |
| 1692 | /* |
| 1693 | * Simplification 4.1. Annotations |
| 1694 | */ |
| 1695 | if ((cur->ns == NULL) || |
| 1696 | (!xmlStrEqual(cur->ns->href, xmlRelaxNGNs))) { |
| 1697 | delete = cur; |
| 1698 | goto skip_children; |
| 1699 | } else { |
| 1700 | if (xmlStrEqual(cur->name, BAD_CAST "externalRef")) { |
| 1701 | TODO |
| 1702 | } else if (xmlStrEqual(cur->name, BAD_CAST "include")) { |
| 1703 | TODO |
| 1704 | } else if ((xmlStrEqual(cur->name, BAD_CAST "element")) || |
| 1705 | (xmlStrEqual(cur->name, BAD_CAST "attribute"))) { |
| 1706 | xmlChar *name; |
| 1707 | xmlNodePtr text = NULL; |
| 1708 | |
| 1709 | /* |
| 1710 | * Simplification 4.8. name attribute of element |
| 1711 | * and attribute elements |
| 1712 | */ |
| 1713 | name = xmlGetProp(cur, BAD_CAST "name"); |
| 1714 | if (name != NULL) { |
| 1715 | if (cur->children == NULL) { |
| 1716 | text = xmlNewChild(cur, cur->ns, BAD_CAST "name", |
| 1717 | name); |
| 1718 | } else { |
| 1719 | xmlNodePtr node; |
| 1720 | node = xmlNewNode(cur->ns, BAD_CAST "name"); |
| 1721 | if (node != NULL) { |
| 1722 | xmlAddPrevSibling(cur->children, node); |
| 1723 | text = xmlNewText(name); |
| 1724 | xmlAddChild(node, text); |
| 1725 | text = node; |
| 1726 | } |
| 1727 | } |
| 1728 | xmlUnsetProp(cur, BAD_CAST "name"); |
| 1729 | xmlFree(name); |
| 1730 | } |
| 1731 | if (xmlStrEqual(cur->name, BAD_CAST "attribute")) { |
| 1732 | if (text == NULL) { |
| 1733 | text = cur->children; |
| 1734 | while (text != NULL) { |
| 1735 | if ((text->type == XML_ELEMENT_NODE) && |
| 1736 | (xmlStrEqual(text->name, BAD_CAST "name"))) |
| 1737 | break; |
| 1738 | text = text->next; |
| 1739 | } |
| 1740 | } |
| 1741 | if (text == NULL) { |
| 1742 | if (ctxt->error != NULL) |
| 1743 | ctxt->error(ctxt->userData, |
| 1744 | "xmlRelaxNGParse: attribute without name\n"); |
| 1745 | ctxt->nbErrors++; |
| 1746 | } else { |
| 1747 | xmlSetProp(text, BAD_CAST "ns", BAD_CAST ""); |
| 1748 | } |
| 1749 | } |
| 1750 | } else if ((xmlStrEqual(cur->name, BAD_CAST "name")) || |
| 1751 | (xmlStrEqual(cur->name, BAD_CAST "nsName")) || |
| 1752 | (xmlStrEqual(cur->name, BAD_CAST "value"))) { |
| 1753 | /* |
| 1754 | * Simplification 4.8. name attribute of element |
| 1755 | * and attribute elements |
| 1756 | */ |
| 1757 | if (xmlHasProp(cur, BAD_CAST "ns") == NULL) { |
| 1758 | xmlNodePtr node; |
| 1759 | xmlChar *ns = NULL; |
| 1760 | |
| 1761 | node = cur->parent; |
| 1762 | while ((node != NULL) && |
| 1763 | (node->type == XML_ELEMENT_NODE)) { |
| 1764 | ns = xmlGetProp(node, BAD_CAST "ns"); |
| 1765 | if (ns != NULL) { |
| 1766 | break; |
| 1767 | } |
| 1768 | node = node->parent; |
| 1769 | } |
| 1770 | if (ns == NULL) { |
| 1771 | xmlSetProp(cur, BAD_CAST "ns", BAD_CAST ""); |
| 1772 | } else { |
| 1773 | xmlSetProp(cur, BAD_CAST "ns", ns); |
| 1774 | xmlFree(ns); |
| 1775 | } |
| 1776 | } |
| 1777 | if (xmlStrEqual(cur->name, BAD_CAST "name")) { |
| 1778 | xmlChar *name, *local, *prefix; |
| 1779 | |
| 1780 | /* |
| 1781 | * Simplification: 4.10. QNames |
| 1782 | */ |
| 1783 | name = xmlNodeGetContent(cur); |
| 1784 | if (name != NULL) { |
| 1785 | local = xmlSplitQName2(name, &prefix); |
| 1786 | if (local != NULL) { |
| 1787 | xmlNsPtr ns; |
| 1788 | |
| 1789 | ns = xmlSearchNs(cur->doc, cur, prefix); |
| 1790 | if (ns == NULL) { |
| 1791 | if (ctxt->error != NULL) |
| 1792 | ctxt->error(ctxt->userData, |
| 1793 | "xmlRelaxNGParse: no namespace for prefix %s\n", prefix); |
| 1794 | ctxt->nbErrors++; |
| 1795 | } else { |
| 1796 | xmlSetProp(cur, BAD_CAST "ns", ns->href); |
| 1797 | xmlNodeSetContent(cur, local); |
| 1798 | } |
| 1799 | xmlFree(local); |
| 1800 | xmlFree(prefix); |
| 1801 | } |
| 1802 | xmlFree(name); |
| 1803 | } |
| 1804 | } |
| 1805 | } |
| 1806 | } |
| 1807 | } |
| 1808 | /* |
| 1809 | * Simplification 4.2 whitespaces |
| 1810 | */ |
| 1811 | else if (cur->type == XML_TEXT_NODE) { |
| 1812 | if (IS_BLANK_NODE(cur)) { |
| 1813 | if (cur->parent->type == XML_ELEMENT_NODE) { |
| 1814 | if ((!xmlStrEqual(cur->parent->name, BAD_CAST "value")) && |
| 1815 | (!xmlStrEqual(cur->parent->name, BAD_CAST "param"))) |
| 1816 | delete = cur; |
| 1817 | } else { |
| 1818 | delete = cur; |
| 1819 | goto skip_children; |
| 1820 | } |
| 1821 | } |
| 1822 | } else if (cur->type != XML_CDATA_SECTION_NODE) { |
| 1823 | delete = cur; |
| 1824 | goto skip_children; |
| 1825 | } |
| 1826 | |
| 1827 | /* |
| 1828 | * Skip to next node |
| 1829 | */ |
| 1830 | if (cur->children != NULL) { |
| 1831 | if ((cur->children->type != XML_ENTITY_DECL) && |
| 1832 | (cur->children->type != XML_ENTITY_REF_NODE) && |
| 1833 | (cur->children->type != XML_ENTITY_NODE)) { |
| 1834 | cur = cur->children; |
| 1835 | continue; |
| 1836 | } |
| 1837 | } |
| 1838 | skip_children: |
| 1839 | if (cur->next != NULL) { |
| 1840 | cur = cur->next; |
| 1841 | continue; |
| 1842 | } |
| 1843 | |
| 1844 | do { |
| 1845 | cur = cur->parent; |
| 1846 | if (cur == NULL) |
| 1847 | break; |
| 1848 | if (cur == root) { |
| 1849 | cur = NULL; |
| 1850 | break; |
| 1851 | } |
| 1852 | if (cur->next != NULL) { |
| 1853 | cur = cur->next; |
| 1854 | break; |
| 1855 | } |
| 1856 | } while (cur != NULL); |
| 1857 | } |
| 1858 | if (delete != NULL) { |
| 1859 | xmlUnlinkNode(delete); |
| 1860 | xmlFreeNode(delete); |
| 1861 | delete = NULL; |
| 1862 | } |
| 1863 | |
| 1864 | /* |
| 1865 | * Then do the parsing for good |
| 1866 | */ |
| 1867 | root = xmlDocGetRootElement(doc); |
| 1868 | if (root == NULL) { |
| 1869 | if (ctxt->error != NULL) |
| 1870 | ctxt->error(ctxt->userData, "xmlRelaxNGParse: %s is empty\n", |
| 1871 | ctxt->URL); |
| 1872 | ctxt->nbErrors++; |
| 1873 | return (NULL); |
| 1874 | } |
| 1875 | ret = xmlRelaxNGParseDocument(ctxt, root); |
| 1876 | if (ret == NULL) |
| 1877 | return(NULL); |
| 1878 | |
| 1879 | /* |
| 1880 | * Check the ref/defines links |
| 1881 | */ |
| 1882 | |
| 1883 | /* |
| 1884 | * if there was a parsing error return NULL |
| 1885 | */ |
| 1886 | if (ctxt->nbErrors > 0) { |
| 1887 | xmlRelaxNGFree(ret); |
| 1888 | return(NULL); |
| 1889 | } |
| 1890 | |
| 1891 | /* |
| 1892 | * Transfer the pointer for cleanup at the schema level. |
| 1893 | */ |
| 1894 | ret->doc = doc; |
| 1895 | ctxt->doc = NULL; |
| 1896 | |
| 1897 | return (ret); |
| 1898 | } |
| 1899 | |
| 1900 | /** |
| 1901 | * xmlRelaxNGSetParserErrors: |
| 1902 | * @ctxt: a Relax-NG validation context |
| 1903 | * @err: the error callback |
| 1904 | * @warn: the warning callback |
| 1905 | * @ctx: contextual data for the callbacks |
| 1906 | * |
| 1907 | * Set the callback functions used to handle errors for a validation context |
| 1908 | */ |
| 1909 | void |
| 1910 | xmlRelaxNGSetParserErrors(xmlRelaxNGParserCtxtPtr ctxt, |
| 1911 | xmlRelaxNGValidityErrorFunc err, |
| 1912 | xmlRelaxNGValidityWarningFunc warn, void *ctx) { |
| 1913 | if (ctxt == NULL) |
| 1914 | return; |
| 1915 | ctxt->error = err; |
| 1916 | ctxt->warning = warn; |
| 1917 | ctxt->userData = ctx; |
| 1918 | } |
| 1919 | /************************************************************************ |
| 1920 | * * |
| 1921 | * Dump back a compiled form * |
| 1922 | * * |
| 1923 | ************************************************************************/ |
| 1924 | static void xmlRelaxNGDumpDefine(FILE * output, xmlRelaxNGDefinePtr define); |
| 1925 | |
| 1926 | /** |
| 1927 | * xmlRelaxNGDumpDefines: |
| 1928 | * @output: the file output |
| 1929 | * @defines: a list of define structures |
| 1930 | * |
| 1931 | * Dump a RelaxNG structure back |
| 1932 | */ |
| 1933 | static void |
| 1934 | xmlRelaxNGDumpDefines(FILE * output, xmlRelaxNGDefinePtr defines) { |
| 1935 | while (defines != NULL) { |
| 1936 | xmlRelaxNGDumpDefine(output, defines); |
| 1937 | defines = defines->next; |
| 1938 | } |
| 1939 | } |
| 1940 | |
| 1941 | /** |
| 1942 | * xmlRelaxNGDumpDefine: |
| 1943 | * @output: the file output |
| 1944 | * @define: a define structure |
| 1945 | * |
| 1946 | * Dump a RelaxNG structure back |
| 1947 | */ |
| 1948 | static void |
| 1949 | xmlRelaxNGDumpDefine(FILE * output, xmlRelaxNGDefinePtr define) { |
| 1950 | if (define == NULL) |
| 1951 | return; |
| 1952 | switch(define->type) { |
| 1953 | case XML_RELAXNG_EMPTY: |
| 1954 | fprintf(output, "<empty/>\n"); |
| 1955 | break; |
| 1956 | case XML_RELAXNG_NOT_ALLOWED: |
| 1957 | fprintf(output, "<notAllowed/>\n"); |
| 1958 | break; |
| 1959 | case XML_RELAXNG_TEXT: |
| 1960 | fprintf(output, "<text/>\n"); |
| 1961 | break; |
| 1962 | case XML_RELAXNG_ELEMENT: |
| 1963 | fprintf(output, "<element>\n"); |
| 1964 | if (define->name != NULL) { |
| 1965 | fprintf(output, "<name"); |
| 1966 | if (define->ns != NULL) |
| 1967 | fprintf(output, " ns=\"%s\"", define->ns); |
| 1968 | fprintf(output, ">%s</name>\n", define->name); |
| 1969 | } |
| 1970 | xmlRelaxNGDumpDefines(output, define->attrs); |
| 1971 | xmlRelaxNGDumpDefines(output, define->content); |
| 1972 | fprintf(output, "</element>\n"); |
| 1973 | break; |
| 1974 | case XML_RELAXNG_LIST: |
| 1975 | fprintf(output, "<list>\n"); |
| 1976 | xmlRelaxNGDumpDefines(output, define->content); |
| 1977 | fprintf(output, "</list>\n"); |
| 1978 | break; |
| 1979 | case XML_RELAXNG_ONEORMORE: |
| 1980 | fprintf(output, "<oneOrMore>\n"); |
| 1981 | xmlRelaxNGDumpDefines(output, define->content); |
| 1982 | fprintf(output, "</oneOrMore>\n"); |
| 1983 | break; |
| 1984 | case XML_RELAXNG_ZEROORMORE: |
| 1985 | fprintf(output, "<zeroOrMore>\n"); |
| 1986 | xmlRelaxNGDumpDefines(output, define->content); |
| 1987 | fprintf(output, "</zeroOrMore>\n"); |
| 1988 | break; |
| 1989 | case XML_RELAXNG_CHOICE: |
| 1990 | fprintf(output, "<choice>\n"); |
| 1991 | xmlRelaxNGDumpDefines(output, define->content); |
| 1992 | fprintf(output, "</choice>\n"); |
| 1993 | break; |
| 1994 | case XML_RELAXNG_GROUP: |
| 1995 | fprintf(output, "<group>\n"); |
| 1996 | xmlRelaxNGDumpDefines(output, define->content); |
| 1997 | fprintf(output, "</group>\n"); |
| 1998 | break; |
| 1999 | case XML_RELAXNG_INTERLEAVE: |
| 2000 | fprintf(output, "<interleave>\n"); |
| 2001 | xmlRelaxNGDumpDefines(output, define->content); |
| 2002 | fprintf(output, "</interleave>\n"); |
| 2003 | break; |
| 2004 | case XML_RELAXNG_OPTIONAL: |
| 2005 | fprintf(output, "<optional>\n"); |
| 2006 | xmlRelaxNGDumpDefines(output, define->content); |
| 2007 | fprintf(output, "</optional>\n"); |
| 2008 | break; |
| 2009 | case XML_RELAXNG_ATTRIBUTE: |
| 2010 | fprintf(output, "<attribute>\n"); |
| 2011 | xmlRelaxNGDumpDefines(output, define->content); |
| 2012 | fprintf(output, "</attribute>\n"); |
| 2013 | break; |
| 2014 | case XML_RELAXNG_DEF: |
| 2015 | fprintf(output, "<define"); |
| 2016 | if (define->name != NULL) |
| 2017 | fprintf(output, " name=\"%s\"", define->name); |
| 2018 | fprintf(output, ">\n"); |
| 2019 | xmlRelaxNGDumpDefines(output, define->content); |
| 2020 | fprintf(output, "</define>\n"); |
| 2021 | break; |
| 2022 | case XML_RELAXNG_REF: |
| 2023 | fprintf(output, "<ref"); |
| 2024 | if (define->name != NULL) |
| 2025 | fprintf(output, " name=\"%s\"", define->name); |
| 2026 | fprintf(output, ">\n"); |
| 2027 | xmlRelaxNGDumpDefines(output, define->content); |
| 2028 | fprintf(output, "</ref>\n"); |
| 2029 | break; |
| 2030 | case XML_RELAXNG_DATATYPE: |
| 2031 | case XML_RELAXNG_VALUE: |
| 2032 | TODO |
| 2033 | break; |
| 2034 | } |
| 2035 | } |
| 2036 | |
| 2037 | /** |
| 2038 | * xmlRelaxNGDumpGrammar: |
| 2039 | * @output: the file output |
| 2040 | * @grammar: a grammar structure |
| 2041 | * @top: is this a top grammar |
| 2042 | * |
| 2043 | * Dump a RelaxNG structure back |
| 2044 | */ |
| 2045 | static void |
| 2046 | xmlRelaxNGDumpGrammar(FILE * output, xmlRelaxNGGrammarPtr grammar, int top) |
| 2047 | { |
| 2048 | if (grammar == NULL) |
| 2049 | return; |
| 2050 | |
| 2051 | fprintf(output, "<grammar"); |
| 2052 | if (top) |
| 2053 | fprintf(output, |
| 2054 | " xmlns=\"http://relaxng.org/ns/structure/1.0\""); |
| 2055 | switch(grammar->combine) { |
| 2056 | case XML_RELAXNG_COMBINE_UNDEFINED: |
| 2057 | break; |
| 2058 | case XML_RELAXNG_COMBINE_CHOICE: |
| 2059 | fprintf(output, " combine=\"choice\""); |
| 2060 | break; |
| 2061 | case XML_RELAXNG_COMBINE_INTERLEAVE: |
| 2062 | fprintf(output, " combine=\"interleave\""); |
| 2063 | break; |
| 2064 | default: |
| 2065 | fprintf(output, " <!-- invalid combine value -->"); |
| 2066 | } |
| 2067 | fprintf(output, ">\n"); |
| 2068 | if (grammar->start == NULL) { |
| 2069 | fprintf(output, " <!-- grammar had no start -->"); |
| 2070 | } else { |
| 2071 | fprintf(output, "<start>\n"); |
| 2072 | xmlRelaxNGDumpDefine(output, grammar->start); |
| 2073 | fprintf(output, "</start>\n"); |
| 2074 | } |
| 2075 | /* TODO ? Dump the defines ? */ |
| 2076 | fprintf(output, "</grammar>\n"); |
| 2077 | } |
| 2078 | |
| 2079 | /** |
| 2080 | * xmlRelaxNGDump: |
| 2081 | * @output: the file output |
| 2082 | * @schema: a schema structure |
| 2083 | * |
| 2084 | * Dump a RelaxNG structure back |
| 2085 | */ |
| 2086 | void |
| 2087 | xmlRelaxNGDump(FILE * output, xmlRelaxNGPtr schema) |
| 2088 | { |
| 2089 | if (schema == NULL) { |
| 2090 | fprintf(output, "RelaxNG empty or failed to compile\n"); |
| 2091 | return; |
| 2092 | } |
| 2093 | fprintf(output, "RelaxNG: "); |
| 2094 | if (schema->doc == NULL) { |
| 2095 | fprintf(output, "no document\n"); |
| 2096 | } else if (schema->doc->URL != NULL) { |
| 2097 | fprintf(output, "%s\n", schema->doc->URL); |
| 2098 | } else { |
| 2099 | fprintf(output, "\n"); |
| 2100 | } |
| 2101 | if (schema->topgrammar == NULL) { |
| 2102 | fprintf(output, "RelaxNG has no top grammar\n"); |
| 2103 | return; |
| 2104 | } |
| 2105 | xmlRelaxNGDumpGrammar(output, schema->topgrammar, 1); |
| 2106 | } |
| 2107 | |
| 2108 | /************************************************************************ |
| 2109 | * * |
| 2110 | * Validation implementation * |
| 2111 | * * |
| 2112 | ************************************************************************/ |
| 2113 | static int xmlRelaxNGValidateDefinition(xmlRelaxNGValidCtxtPtr ctxt, |
| 2114 | xmlRelaxNGDefinePtr define); |
| 2115 | |
| 2116 | /** |
| 2117 | * xmlRelaxNGSkipIgnored: |
| 2118 | * @ctxt: a schema validation context |
| 2119 | * @node: the top node. |
| 2120 | * |
| 2121 | * Skip ignorable nodes in that context |
| 2122 | * |
| 2123 | * Returns the new sibling or NULL in case of error. |
| 2124 | */ |
| 2125 | static xmlNodePtr |
| 2126 | xmlRelaxNGSkipIgnored(xmlRelaxNGValidCtxtPtr ctxt ATTRIBUTE_UNUSED, |
| 2127 | xmlNodePtr node) { |
| 2128 | /* |
| 2129 | * TODO complete and handle entities |
| 2130 | */ |
| 2131 | while ((node != NULL) && |
| 2132 | ((node->type == XML_COMMENT_NODE) || |
| 2133 | ((node->type == XML_TEXT_NODE) && |
| 2134 | (IS_BLANK_NODE(node))))) { |
| 2135 | node = node->next; |
| 2136 | } |
| 2137 | return(node); |
| 2138 | } |
| 2139 | |
| 2140 | /** |
| 2141 | * xmlRelaxNGValidateValue: |
| 2142 | * @ctxt: a Relax-NG validation context |
| 2143 | * @define: the definition to verify |
| 2144 | * |
| 2145 | * Validate the given definition for the current value |
| 2146 | * |
| 2147 | * Returns 0 if the validation succeeded or an error code. |
| 2148 | */ |
| 2149 | static int |
| 2150 | xmlRelaxNGValidateValue(xmlRelaxNGValidCtxtPtr ctxt, |
| 2151 | xmlRelaxNGDefinePtr define) { |
| 2152 | int ret = 0; |
| 2153 | xmlChar *value; |
| 2154 | |
| 2155 | value = ctxt->state->value; |
| 2156 | switch (define->type) { |
| 2157 | case XML_RELAXNG_EMPTY: |
| 2158 | if ((value != NULL) && (value[0] != '0')) |
| 2159 | ret = -1; |
| 2160 | break; |
| 2161 | case XML_RELAXNG_TEXT: |
| 2162 | break; |
| 2163 | default: |
| 2164 | TODO |
| 2165 | ret = -1; |
| 2166 | } |
| 2167 | return(ret); |
| 2168 | } |
| 2169 | |
| 2170 | /** |
| 2171 | * xmlRelaxNGValidateValueContent: |
| 2172 | * @ctxt: a Relax-NG validation context |
| 2173 | * @defines: the list of definitions to verify |
| 2174 | * |
| 2175 | * Validate the given definitions for the current value |
| 2176 | * |
| 2177 | * Returns 0 if the validation succeeded or an error code. |
| 2178 | */ |
| 2179 | static int |
| 2180 | xmlRelaxNGValidateValueContent(xmlRelaxNGValidCtxtPtr ctxt, |
| 2181 | xmlRelaxNGDefinePtr defines) { |
| 2182 | int ret = 0; |
| 2183 | |
| 2184 | while (defines != NULL) { |
| 2185 | ret = xmlRelaxNGValidateValue(ctxt, defines); |
| 2186 | if (ret != 0) |
| 2187 | break; |
| 2188 | defines = defines->next; |
| 2189 | } |
| 2190 | return(ret); |
| 2191 | } |
| 2192 | |
| 2193 | /** |
| 2194 | * xmlRelaxNGValidateAttribute: |
| 2195 | * @ctxt: a Relax-NG validation context |
| 2196 | * @define: the definition to verify |
| 2197 | * |
| 2198 | * Validate the given attribute definition for that node |
| 2199 | * |
| 2200 | * Returns 0 if the validation succeeded or an error code. |
| 2201 | */ |
| 2202 | static int |
| 2203 | xmlRelaxNGValidateAttribute(xmlRelaxNGValidCtxtPtr ctxt, |
| 2204 | xmlRelaxNGDefinePtr define) { |
| 2205 | int ret = 0, i; |
| 2206 | xmlChar *value, *oldvalue; |
| 2207 | xmlAttrPtr prop = NULL, tmp; |
| 2208 | |
| 2209 | if (define->name != NULL) { |
| 2210 | for (i = 0;i < ctxt->state->nbAttrs;i++) { |
| 2211 | tmp = ctxt->state->attrs[i]; |
| 2212 | if ((tmp != NULL) && (xmlStrEqual(define->name, tmp->name))) { |
| 2213 | if ((((define->ns == NULL) || (define->ns[0] == 0)) && |
| 2214 | (tmp->ns == NULL)) || |
| 2215 | ((tmp->ns != NULL) && |
| 2216 | (xmlStrEqual(define->ns, tmp->ns->href)))) { |
| 2217 | prop = tmp; |
| 2218 | break; |
| 2219 | } |
| 2220 | } |
| 2221 | } |
| 2222 | if (prop != NULL) { |
| 2223 | value = xmlNodeListGetString(prop->doc, prop->children, 1); |
| 2224 | oldvalue = ctxt->state->value; |
| 2225 | ctxt->state->value = value; |
| 2226 | ret = xmlRelaxNGValidateValueContent(ctxt, define->content); |
| 2227 | value = ctxt->state->value; |
| 2228 | ctxt->state->value = oldvalue; |
| 2229 | if (value != NULL) |
| 2230 | xmlFree(value); |
| 2231 | if (ret == 0) { |
| 2232 | /* |
| 2233 | * flag the attribute as processed |
| 2234 | */ |
| 2235 | ctxt->state->attrs[i] = NULL; |
| 2236 | } |
| 2237 | } else { |
| 2238 | ret = -1; |
| 2239 | } |
| 2240 | #ifdef DEBUG |
| 2241 | xmlGenericError(xmlGenericErrorContext, |
| 2242 | "xmlRelaxNGValidateAttribute(%s): %d\n", define->name, ret); |
| 2243 | #endif |
| 2244 | } else { |
| 2245 | TODO |
| 2246 | } |
| 2247 | |
| 2248 | return(ret); |
| 2249 | } |
| 2250 | |
| 2251 | /** |
| 2252 | * xmlRelaxNGValidateAttributeList: |
| 2253 | * @ctxt: a Relax-NG validation context |
| 2254 | * @define: the list of definition to verify |
| 2255 | * |
| 2256 | * Validate the given node against the list of attribute definitions |
| 2257 | * |
| 2258 | * Returns 0 if the validation succeeded or an error code. |
| 2259 | */ |
| 2260 | static int |
| 2261 | xmlRelaxNGValidateAttributeList(xmlRelaxNGValidCtxtPtr ctxt, |
| 2262 | xmlRelaxNGDefinePtr defines) { |
| 2263 | int ret = 0; |
| 2264 | while (defines != NULL) { |
| 2265 | if (xmlRelaxNGValidateAttribute(ctxt, defines) != 0) |
| 2266 | ret = -1; |
| 2267 | defines = defines->next; |
| 2268 | } |
| 2269 | return(ret); |
| 2270 | } |
| 2271 | |
| 2272 | /** |
| 2273 | * xmlRelaxNGValidateElementContent: |
| 2274 | * @ctxt: a Relax-NG validation context |
| 2275 | * @define: the list of definition to verify |
| 2276 | * |
| 2277 | * Validate the given node content against the (list) of definitions |
| 2278 | * |
| 2279 | * Returns 0 if the validation succeeded or an error code. |
| 2280 | */ |
| 2281 | static int |
| 2282 | xmlRelaxNGValidateElementContent(xmlRelaxNGValidCtxtPtr ctxt, |
| 2283 | xmlRelaxNGDefinePtr defines) { |
| 2284 | int ret = 0, res; |
| 2285 | |
| 2286 | if (ctxt->state == NULL) { |
| 2287 | VALID_CTXT(); |
| 2288 | VALID_ERROR("Internal: no state\n"); |
| 2289 | return(-1); |
| 2290 | } |
| 2291 | while (defines != NULL) { |
| 2292 | res = xmlRelaxNGValidateDefinition(ctxt, defines); |
| 2293 | if (res < 0) |
| 2294 | ret = -1; |
| 2295 | defines = defines->next; |
| 2296 | } |
| 2297 | |
| 2298 | return(ret); |
| 2299 | } |
| 2300 | |
| 2301 | /** |
| 2302 | * xmlRelaxNGValidateDefinition: |
| 2303 | * @ctxt: a Relax-NG validation context |
| 2304 | * @define: the definition to verify |
| 2305 | * |
| 2306 | * Validate the current node against the definition |
| 2307 | * |
| 2308 | * Returns 0 if the validation succeeded or an error code. |
| 2309 | */ |
| 2310 | static int |
| 2311 | xmlRelaxNGValidateDefinition(xmlRelaxNGValidCtxtPtr ctxt, |
| 2312 | xmlRelaxNGDefinePtr define) { |
| 2313 | xmlNodePtr node; |
| 2314 | int ret = 0, i, tmp, oldflags; |
| 2315 | xmlRelaxNGValidStatePtr oldstate, state; |
| 2316 | |
| 2317 | if (define == NULL) { |
| 2318 | VALID_CTXT(); |
| 2319 | VALID_ERROR("internal error: define == NULL\n"); |
| 2320 | return(-1); |
| 2321 | } |
| 2322 | if (ctxt->state != NULL) { |
| 2323 | node = ctxt->state->seq; |
| 2324 | } else { |
| 2325 | node = NULL; |
| 2326 | } |
| 2327 | switch (define->type) { |
| 2328 | case XML_RELAXNG_EMPTY: |
| 2329 | if (node != NULL) { |
| 2330 | VALID_CTXT(); |
| 2331 | VALID_ERROR("Expecting an empty element\n"); |
| 2332 | return(-1); |
| 2333 | } |
| 2334 | #ifdef DEBUG |
| 2335 | xmlGenericError(xmlGenericErrorContext, |
| 2336 | "xmlRelaxNGValidateDefinition(): validated empty\n"); |
| 2337 | #endif |
| 2338 | return(0); |
| 2339 | case XML_RELAXNG_NOT_ALLOWED: |
| 2340 | TODO |
| 2341 | break; |
| 2342 | case XML_RELAXNG_TEXT: |
| 2343 | if (node == NULL) |
| 2344 | return(0); |
| 2345 | while ((node != NULL) && |
| 2346 | ((node->type == XML_TEXT_NODE) || |
| 2347 | (node->type == XML_CDATA_SECTION_NODE))) |
| 2348 | node = node->next; |
| 2349 | ctxt->state->seq = node; |
| 2350 | if (node == NULL) { |
| 2351 | return(0); |
| 2352 | } |
| 2353 | VALID_CTXT(); |
| 2354 | VALID_ERROR("Expecting text content\n"); |
| 2355 | return(-1); |
| 2356 | case XML_RELAXNG_ELEMENT: |
| 2357 | node = xmlRelaxNGSkipIgnored(ctxt, node); |
| 2358 | if ((node == NULL) || (node->type != XML_ELEMENT_NODE)) { |
| 2359 | VALID_CTXT(); |
| 2360 | VALID_ERROR("Expecting an element\n"); |
| 2361 | return(-1); |
| 2362 | } |
| 2363 | if (define->name != NULL) { |
| 2364 | if (!xmlStrEqual(node->name, define->name)) { |
| 2365 | VALID_CTXT(); |
| 2366 | VALID_ERROR("Expecting element %s, got %s\n", |
| 2367 | define->name, node->name); |
| 2368 | return(-1); |
| 2369 | } |
| 2370 | } |
| 2371 | if ((define->ns != NULL) && (define->ns[0] != 0)) { |
| 2372 | if (node->ns == NULL) { |
| 2373 | VALID_CTXT(); |
| 2374 | VALID_ERROR("Expecting a namespace for element %s\n", |
| 2375 | node->name); |
| 2376 | return(-1); |
| 2377 | } else if (!xmlStrEqual(node->ns->href, define->ns)) { |
| 2378 | VALID_CTXT(); |
| 2379 | VALID_ERROR("Expecting element %s has wrong namespace: expecting %s\n", |
| 2380 | node->name, define->ns); |
| 2381 | return(-1); |
| 2382 | } |
| 2383 | } else { |
| 2384 | if (node->ns != NULL) { |
| 2385 | VALID_CTXT(); |
| 2386 | VALID_ERROR("Expecting no namespace for element %s\n", |
| 2387 | node->name); |
| 2388 | return(-1); |
| 2389 | } |
| 2390 | } |
| 2391 | |
| 2392 | state = xmlRelaxNGNewValidState(ctxt, node); |
| 2393 | if (state == NULL) { |
| 2394 | return(-1); |
| 2395 | } |
| 2396 | |
| 2397 | oldstate = ctxt->state; |
| 2398 | ctxt->state = state; |
| 2399 | if (define->attrs != NULL) { |
| 2400 | tmp = xmlRelaxNGValidateAttributeList(ctxt, define->attrs); |
| 2401 | if (tmp != 0) |
| 2402 | ret = -1; |
| 2403 | } |
| 2404 | if (define->content != NULL) { |
| 2405 | tmp = xmlRelaxNGValidateElementContent(ctxt, define->content); |
| 2406 | if (tmp != 0) |
| 2407 | ret = -1; |
| 2408 | } |
| 2409 | state = ctxt->state; |
| 2410 | if (state->seq != NULL) { |
| 2411 | state->seq = xmlRelaxNGSkipIgnored(ctxt, state->seq); |
| 2412 | if (state->seq != NULL) { |
| 2413 | VALID_CTXT(); |
| 2414 | VALID_ERROR("Extra content for element %s\n", |
| 2415 | node->name); |
| 2416 | ret = -1; |
| 2417 | } |
| 2418 | } |
| 2419 | for (i = 0;i < state->nbAttrs;i++) { |
| 2420 | if (state->attrs[i] != NULL) { |
| 2421 | VALID_CTXT(); |
| 2422 | VALID_ERROR("Extra attribute %s for element %s\n", |
| 2423 | state->attrs[i]->name, node->name); |
| 2424 | ret = -1; |
| 2425 | } |
| 2426 | } |
| 2427 | ctxt->state = oldstate; |
| 2428 | xmlRelaxNGFreeValidState(state); |
| 2429 | if (oldstate != NULL) |
| 2430 | oldstate->seq = node->next; |
| 2431 | |
| 2432 | |
| 2433 | #ifdef DEBUG |
| 2434 | xmlGenericError(xmlGenericErrorContext, |
| 2435 | "xmlRelaxNGValidateDefinition(): validated %s : %d\n", |
| 2436 | node->name, ret); |
| 2437 | #endif |
| 2438 | break; |
| 2439 | case XML_RELAXNG_LIST: |
| 2440 | TODO |
| 2441 | break; |
| 2442 | case XML_RELAXNG_OPTIONAL: |
| 2443 | oldflags = ctxt->flags; |
| 2444 | ctxt->flags |= FLAGS_IGNORABLE; |
| 2445 | oldstate = xmlRelaxNGCopyValidState(ctxt, ctxt->state); |
| 2446 | ret = xmlRelaxNGValidateDefinition(ctxt, define->content); |
| 2447 | if (ret != 0) { |
| 2448 | xmlRelaxNGFreeValidState(ctxt->state); |
| 2449 | ctxt->state = oldstate; |
| 2450 | ret = 0; |
| 2451 | break; |
| 2452 | } |
| 2453 | xmlRelaxNGFreeValidState(oldstate); |
| 2454 | ctxt->flags = oldflags; |
| 2455 | ret = 0; |
| 2456 | break; |
| 2457 | case XML_RELAXNG_ONEORMORE: |
| 2458 | ret = xmlRelaxNGValidateDefinition(ctxt, define->content); |
| 2459 | if (ret != 0) { |
| 2460 | break; |
| 2461 | } |
| 2462 | /* no break on purpose */ |
| 2463 | case XML_RELAXNG_ZEROORMORE: |
| 2464 | oldflags = ctxt->flags; |
| 2465 | ctxt->flags |= FLAGS_IGNORABLE; |
| 2466 | while (node != NULL) { |
| 2467 | oldstate = xmlRelaxNGCopyValidState(ctxt, ctxt->state); |
| 2468 | ret = xmlRelaxNGValidateDefinition(ctxt, define->content); |
| 2469 | if (ret != 0) { |
| 2470 | xmlRelaxNGFreeValidState(ctxt->state); |
| 2471 | ctxt->state = oldstate; |
| 2472 | ret = 0; |
| 2473 | break; |
| 2474 | } |
| 2475 | xmlRelaxNGFreeValidState(oldstate); |
| 2476 | node = ctxt->state->node; |
| 2477 | } |
| 2478 | ctxt->flags = oldflags; |
| 2479 | break; |
| 2480 | case XML_RELAXNG_CHOICE: { |
| 2481 | xmlRelaxNGDefinePtr list = define->content; |
| 2482 | |
| 2483 | oldflags = ctxt->flags; |
| 2484 | ctxt->flags |= FLAGS_IGNORABLE; |
| 2485 | |
| 2486 | while (list != NULL) { |
| 2487 | oldstate = xmlRelaxNGCopyValidState(ctxt, ctxt->state); |
| 2488 | ret = xmlRelaxNGValidateDefinition(ctxt, list); |
| 2489 | if (ret == 0) { |
| 2490 | xmlRelaxNGFreeValidState(oldstate); |
| 2491 | break; |
| 2492 | } |
| 2493 | xmlRelaxNGFreeValidState(ctxt->state); |
| 2494 | ctxt->state = oldstate; |
| 2495 | list = list->next; |
| 2496 | } |
| 2497 | ctxt->flags = oldflags; |
| 2498 | break; |
| 2499 | } |
| 2500 | case XML_RELAXNG_GROUP: { |
| 2501 | xmlRelaxNGDefinePtr list = define->content; |
| 2502 | |
| 2503 | while (list != NULL) { |
| 2504 | ret = xmlRelaxNGValidateDefinition(ctxt, list); |
| 2505 | if (ret != 0) |
| 2506 | break; |
| 2507 | list = list->next; |
| 2508 | } |
| 2509 | break; |
| 2510 | } |
| 2511 | case XML_RELAXNG_INTERLEAVE: |
| 2512 | TODO |
| 2513 | break; |
| 2514 | case XML_RELAXNG_ATTRIBUTE: |
| 2515 | ret = xmlRelaxNGValidateAttribute(ctxt, define); |
| 2516 | break; |
| 2517 | case XML_RELAXNG_REF: |
| 2518 | ret = xmlRelaxNGValidateDefinition(ctxt, define->content); |
| 2519 | break; |
| 2520 | case XML_RELAXNG_DEF: |
| 2521 | ret = xmlRelaxNGValidateDefinition(ctxt, define->content); |
| 2522 | break; |
| 2523 | case XML_RELAXNG_DATATYPE: |
| 2524 | case XML_RELAXNG_VALUE: |
| 2525 | TODO |
| 2526 | break; |
| 2527 | } |
| 2528 | return(ret); |
| 2529 | } |
| 2530 | |
| 2531 | /** |
| 2532 | * xmlRelaxNGValidateDocument: |
| 2533 | * @ctxt: a Relax-NG validation context |
| 2534 | * @doc: the document |
| 2535 | * |
| 2536 | * Validate the given document |
| 2537 | * |
| 2538 | * Returns 0 if the validation succeeded or an error code. |
| 2539 | */ |
| 2540 | static int |
| 2541 | xmlRelaxNGValidateDocument(xmlRelaxNGValidCtxtPtr ctxt, xmlDocPtr doc) { |
| 2542 | int ret; |
| 2543 | xmlRelaxNGPtr schema; |
| 2544 | xmlRelaxNGGrammarPtr grammar; |
| 2545 | xmlRelaxNGValidStatePtr state; |
| 2546 | |
| 2547 | if ((ctxt == NULL) || (ctxt->schema == NULL) || (doc == NULL)) |
| 2548 | return(-1); |
| 2549 | |
| 2550 | schema = ctxt->schema; |
| 2551 | grammar = schema->topgrammar; |
| 2552 | if (grammar == NULL) { |
| 2553 | VALID_CTXT(); |
| 2554 | VALID_ERROR("No top grammar defined\n"); |
| 2555 | return(-1); |
| 2556 | } |
| 2557 | state = xmlRelaxNGNewValidState(ctxt, NULL); |
| 2558 | ctxt->state = state; |
| 2559 | ret = xmlRelaxNGValidateDefinition(ctxt, grammar->start); |
| 2560 | state = ctxt->state; |
| 2561 | if ((state != NULL) && (state->seq != NULL)) { |
| 2562 | xmlNodePtr node; |
| 2563 | |
| 2564 | node = state->seq; |
| 2565 | node = xmlRelaxNGSkipIgnored(ctxt, node); |
| 2566 | if (node != NULL) { |
| 2567 | VALID_CTXT(); |
| 2568 | VALID_ERROR("extra data on the document\n"); |
| 2569 | ret = -1; |
| 2570 | } |
| 2571 | } |
| 2572 | xmlRelaxNGFreeValidState(state); |
| 2573 | |
| 2574 | return(ret); |
| 2575 | } |
| 2576 | |
| 2577 | /************************************************************************ |
| 2578 | * * |
| 2579 | * Validation interfaces * |
| 2580 | * * |
| 2581 | ************************************************************************/ |
| 2582 | /** |
| 2583 | * xmlRelaxNGNewValidCtxt: |
| 2584 | * @schema: a precompiled XML RelaxNGs |
| 2585 | * |
| 2586 | * Create an XML RelaxNGs validation context based on the given schema |
| 2587 | * |
| 2588 | * Returns the validation context or NULL in case of error |
| 2589 | */ |
| 2590 | xmlRelaxNGValidCtxtPtr |
| 2591 | xmlRelaxNGNewValidCtxt(xmlRelaxNGPtr schema) { |
| 2592 | xmlRelaxNGValidCtxtPtr ret; |
| 2593 | |
| 2594 | ret = (xmlRelaxNGValidCtxtPtr) xmlMalloc(sizeof(xmlRelaxNGValidCtxt)); |
| 2595 | if (ret == NULL) { |
| 2596 | xmlGenericError(xmlGenericErrorContext, |
| 2597 | "Failed to allocate new schama validation context\n"); |
| 2598 | return (NULL); |
| 2599 | } |
| 2600 | memset(ret, 0, sizeof(xmlRelaxNGValidCtxt)); |
| 2601 | ret->schema = schema; |
| 2602 | return (ret); |
| 2603 | } |
| 2604 | |
| 2605 | /** |
| 2606 | * xmlRelaxNGFreeValidCtxt: |
| 2607 | * @ctxt: the schema validation context |
| 2608 | * |
| 2609 | * Free the resources associated to the schema validation context |
| 2610 | */ |
| 2611 | void |
| 2612 | xmlRelaxNGFreeValidCtxt(xmlRelaxNGValidCtxtPtr ctxt) { |
| 2613 | if (ctxt == NULL) |
| 2614 | return; |
| 2615 | xmlFree(ctxt); |
| 2616 | } |
| 2617 | |
| 2618 | /** |
| 2619 | * xmlRelaxNGSetValidErrors: |
| 2620 | * @ctxt: a Relax-NG validation context |
| 2621 | * @err: the error function |
| 2622 | * @warn: the warning function |
| 2623 | * @ctx: the functions context |
| 2624 | * |
| 2625 | * Set the error and warning callback informations |
| 2626 | */ |
| 2627 | void |
| 2628 | xmlRelaxNGSetValidErrors(xmlRelaxNGValidCtxtPtr ctxt, |
| 2629 | xmlRelaxNGValidityErrorFunc err, |
| 2630 | xmlRelaxNGValidityWarningFunc warn, void *ctx) { |
| 2631 | if (ctxt == NULL) |
| 2632 | return; |
| 2633 | ctxt->error = err; |
| 2634 | ctxt->warning = warn; |
| 2635 | ctxt->userData = ctx; |
| 2636 | } |
| 2637 | |
| 2638 | /** |
| 2639 | * xmlRelaxNGValidateDoc: |
| 2640 | * @ctxt: a Relax-NG validation context |
| 2641 | * @doc: a parsed document tree |
| 2642 | * |
| 2643 | * Validate a document tree in memory. |
| 2644 | * |
| 2645 | * Returns 0 if the document is valid, a positive error code |
| 2646 | * number otherwise and -1 in case of internal or API error. |
| 2647 | */ |
| 2648 | int |
| 2649 | xmlRelaxNGValidateDoc(xmlRelaxNGValidCtxtPtr ctxt, xmlDocPtr doc) { |
| 2650 | int ret; |
| 2651 | |
| 2652 | if ((ctxt == NULL) || (doc == NULL)) |
| 2653 | return(-1); |
| 2654 | |
| 2655 | ctxt->doc = doc; |
| 2656 | |
| 2657 | ret = xmlRelaxNGValidateDocument(ctxt, doc); |
| 2658 | return(ret); |
| 2659 | } |
| 2660 | |
| 2661 | #endif /* LIBXML_SCHEMAS_ENABLED */ |
| 2662 | |