Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1 | /* |
| 2 | * valid.c : part of the code use to do the DTD handling and the validity |
| 3 | * checking |
| 4 | * |
| 5 | * See Copyright for the status of this software. |
| 6 | * |
| 7 | * Daniel.Veillard@w3.org |
| 8 | */ |
| 9 | |
Bjorn Reese | 70a9da5 | 2001-04-21 16:57:29 +0000 | [diff] [blame] | 10 | #include "libxml.h" |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 11 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 12 | #include <string.h> |
| 13 | |
| 14 | #ifdef HAVE_STDLIB_H |
| 15 | #include <stdlib.h> |
| 16 | #endif |
| 17 | |
| 18 | #include <libxml/xmlmemory.h> |
| 19 | #include <libxml/hash.h> |
| 20 | #include <libxml/valid.h> |
| 21 | #include <libxml/parser.h> |
| 22 | #include <libxml/parserInternals.h> |
| 23 | #include <libxml/xmlerror.h> |
| 24 | #include <libxml/list.h> |
| 25 | |
Daniel Veillard | e62d36c | 2001-05-15 08:53:16 +0000 | [diff] [blame] | 26 | /* #define DEBUG_VALID_ALGO */ |
| 27 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 28 | /* |
| 29 | * Generic function for accessing stacks in the Validity Context |
| 30 | */ |
| 31 | |
| 32 | #define PUSH_AND_POP(scope, type, name) \ |
| 33 | scope int name##VPush(xmlValidCtxtPtr ctxt, type value) { \ |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 34 | if (ctxt->name##Max <= 0) { \ |
| 35 | ctxt->name##Max = 4; \ |
| 36 | ctxt->name##Tab = (type *) xmlMalloc( \ |
| 37 | ctxt->name##Max * sizeof(ctxt->name##Tab[0])); \ |
| 38 | if (ctxt->name##Tab == NULL) { \ |
| 39 | xmlGenericError(xmlGenericErrorContext, \ |
| 40 | "malloc failed !\n"); \ |
| 41 | return(0); \ |
| 42 | } \ |
| 43 | } \ |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 44 | if (ctxt->name##Nr >= ctxt->name##Max) { \ |
| 45 | ctxt->name##Max *= 2; \ |
| 46 | ctxt->name##Tab = (type *) xmlRealloc(ctxt->name##Tab, \ |
| 47 | ctxt->name##Max * sizeof(ctxt->name##Tab[0])); \ |
| 48 | if (ctxt->name##Tab == NULL) { \ |
| 49 | xmlGenericError(xmlGenericErrorContext, \ |
| 50 | "realloc failed !\n"); \ |
| 51 | return(0); \ |
| 52 | } \ |
| 53 | } \ |
| 54 | ctxt->name##Tab[ctxt->name##Nr] = value; \ |
| 55 | ctxt->name = value; \ |
| 56 | return(ctxt->name##Nr++); \ |
| 57 | } \ |
| 58 | scope type name##VPop(xmlValidCtxtPtr ctxt) { \ |
| 59 | type ret; \ |
| 60 | if (ctxt->name##Nr <= 0) return(0); \ |
| 61 | ctxt->name##Nr--; \ |
| 62 | if (ctxt->name##Nr > 0) \ |
| 63 | ctxt->name = ctxt->name##Tab[ctxt->name##Nr - 1]; \ |
| 64 | else \ |
| 65 | ctxt->name = NULL; \ |
| 66 | ret = ctxt->name##Tab[ctxt->name##Nr]; \ |
| 67 | ctxt->name##Tab[ctxt->name##Nr] = 0; \ |
| 68 | return(ret); \ |
| 69 | } \ |
| 70 | |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 71 | /* |
| 72 | * I will use a home made algorithm less complex and easier to |
| 73 | * debug/maintin than a generic NFA -> DFA state based algo. The |
| 74 | * only restriction is on the deepness of the tree limited by the |
| 75 | * size of the occurs bitfield |
| 76 | * |
| 77 | * this is the content of a saved state for rollbacks |
| 78 | */ |
| 79 | |
| 80 | #define ROLLBACK_OR 0 |
| 81 | #define ROLLBACK_PARENT 1 |
| 82 | |
| 83 | struct _xmlValidState { |
| 84 | xmlElementContentPtr cont; /* pointer to the content model subtree */ |
| 85 | xmlNodePtr node; /* pointer to the current node in the list */ |
| 86 | long occurs;/* bitfield for multiple occurences */ |
| 87 | unsigned char depth; /* current depth in the overall tree */ |
| 88 | unsigned char state; /* ROLLBACK_XXX */ |
| 89 | } _xmlValidState; |
| 90 | |
| 91 | #define MAX_DEPTH ((sizeof(_xmlValidState.occurs)) * 8) |
| 92 | #define CONT ctxt->vstate->cont |
| 93 | #define NODE ctxt->vstate->node |
| 94 | #define DEPTH ctxt->vstate->depth |
| 95 | #define OCCURS ctxt->vstate->occurs |
| 96 | #define STATE ctxt->vstate->state |
| 97 | |
| 98 | #define OCCURENCE (ctxt->vstate->occurs & (1 << DEPTH)) |
| 99 | #define PARENT_OCCURENCE (ctxt->vstate->occurs & ((1 << DEPTH) - 1)) |
| 100 | |
| 101 | #define SET_OCCURENCE ctxt->vstate->occurs |= (1 << DEPTH) |
| 102 | #define RESET_OCCURENCE ctxt->vstate->occurs &= ((1 << DEPTH) - 1) |
| 103 | |
| 104 | static int |
| 105 | vstateVPush(xmlValidCtxtPtr ctxt, xmlElementContentPtr cont, |
| 106 | xmlNodePtr node, unsigned char depth, long occurs, |
| 107 | unsigned char state) { |
Daniel Veillard | bed7b05 | 2001-05-19 14:59:49 +0000 | [diff] [blame] | 108 | int i = ctxt->vstateNr - 1; |
| 109 | |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 110 | if (ctxt->vstateNr >= ctxt->vstateMax) { |
| 111 | ctxt->vstateMax *= 2; |
| 112 | ctxt->vstateTab = (xmlValidState *) xmlRealloc(ctxt->vstateTab, |
| 113 | ctxt->vstateMax * sizeof(ctxt->vstateTab[0])); |
| 114 | if (ctxt->vstateTab == NULL) { |
| 115 | xmlGenericError(xmlGenericErrorContext, |
| 116 | "realloc failed !n"); |
| 117 | return(0); |
| 118 | } |
Daniel Veillard | 0680399 | 2001-04-22 10:35:56 +0000 | [diff] [blame] | 119 | ctxt->vstate = &ctxt->vstateTab[0]; |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 120 | } |
Daniel Veillard | bed7b05 | 2001-05-19 14:59:49 +0000 | [diff] [blame] | 121 | /* |
| 122 | * Don't push on the stack a state already here |
| 123 | */ |
| 124 | if ((i >= 0) && (ctxt->vstateTab[i].cont == cont) && |
| 125 | (ctxt->vstateTab[i].node == node) && |
| 126 | (ctxt->vstateTab[i].depth == depth) && |
| 127 | (ctxt->vstateTab[i].occurs == occurs) && |
| 128 | (ctxt->vstateTab[i].state == state)) |
| 129 | return(ctxt->vstateNr); |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 130 | ctxt->vstateTab[ctxt->vstateNr].cont = cont; |
| 131 | ctxt->vstateTab[ctxt->vstateNr].node = node; |
| 132 | ctxt->vstateTab[ctxt->vstateNr].depth = depth; |
| 133 | ctxt->vstateTab[ctxt->vstateNr].occurs = occurs; |
| 134 | ctxt->vstateTab[ctxt->vstateNr].state = state; |
| 135 | return(ctxt->vstateNr++); |
| 136 | } |
| 137 | |
| 138 | static int |
| 139 | vstateVPop(xmlValidCtxtPtr ctxt) { |
| 140 | if (ctxt->vstateNr <= 1) return(-1); |
| 141 | ctxt->vstateNr--; |
| 142 | ctxt->vstate = &ctxt->vstateTab[0]; |
| 143 | ctxt->vstate->cont = ctxt->vstateTab[ctxt->vstateNr].cont; |
| 144 | ctxt->vstate->node = ctxt->vstateTab[ctxt->vstateNr].node; |
| 145 | ctxt->vstate->depth = ctxt->vstateTab[ctxt->vstateNr].depth; |
| 146 | ctxt->vstate->occurs = ctxt->vstateTab[ctxt->vstateNr].occurs; |
| 147 | ctxt->vstate->state = ctxt->vstateTab[ctxt->vstateNr].state; |
| 148 | return(ctxt->vstateNr); |
| 149 | } |
| 150 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 151 | PUSH_AND_POP(static, xmlNodePtr, node) |
| 152 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 153 | #ifdef DEBUG_VALID_ALGO |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 154 | static void |
| 155 | xmlValidPrintNode(xmlNodePtr cur) { |
| 156 | if (cur == NULL) { |
| 157 | xmlGenericError(xmlGenericErrorContext, "null"); |
| 158 | return; |
| 159 | } |
| 160 | switch (cur->type) { |
| 161 | case XML_ELEMENT_NODE: |
| 162 | xmlGenericError(xmlGenericErrorContext, "%s ", cur->name); |
| 163 | break; |
| 164 | case XML_TEXT_NODE: |
| 165 | xmlGenericError(xmlGenericErrorContext, "text "); |
| 166 | break; |
| 167 | case XML_CDATA_SECTION_NODE: |
| 168 | xmlGenericError(xmlGenericErrorContext, "cdata "); |
| 169 | break; |
| 170 | case XML_ENTITY_REF_NODE: |
| 171 | xmlGenericError(xmlGenericErrorContext, "&%s; ", cur->name); |
| 172 | break; |
| 173 | case XML_PI_NODE: |
| 174 | xmlGenericError(xmlGenericErrorContext, "pi(%s) ", cur->name); |
| 175 | break; |
| 176 | case XML_COMMENT_NODE: |
| 177 | xmlGenericError(xmlGenericErrorContext, "comment "); |
| 178 | break; |
| 179 | case XML_ATTRIBUTE_NODE: |
| 180 | xmlGenericError(xmlGenericErrorContext, "?attr? "); |
| 181 | break; |
| 182 | case XML_ENTITY_NODE: |
| 183 | xmlGenericError(xmlGenericErrorContext, "?ent? "); |
| 184 | break; |
| 185 | case XML_DOCUMENT_NODE: |
| 186 | xmlGenericError(xmlGenericErrorContext, "?doc? "); |
| 187 | break; |
| 188 | case XML_DOCUMENT_TYPE_NODE: |
| 189 | xmlGenericError(xmlGenericErrorContext, "?doctype? "); |
| 190 | break; |
| 191 | case XML_DOCUMENT_FRAG_NODE: |
| 192 | xmlGenericError(xmlGenericErrorContext, "?frag? "); |
| 193 | break; |
| 194 | case XML_NOTATION_NODE: |
| 195 | xmlGenericError(xmlGenericErrorContext, "?nota? "); |
| 196 | break; |
| 197 | case XML_HTML_DOCUMENT_NODE: |
| 198 | xmlGenericError(xmlGenericErrorContext, "?html? "); |
| 199 | break; |
| 200 | case XML_DTD_NODE: |
| 201 | xmlGenericError(xmlGenericErrorContext, "?dtd? "); |
| 202 | break; |
| 203 | case XML_ELEMENT_DECL: |
| 204 | xmlGenericError(xmlGenericErrorContext, "?edecl? "); |
| 205 | break; |
| 206 | case XML_ATTRIBUTE_DECL: |
| 207 | xmlGenericError(xmlGenericErrorContext, "?adecl? "); |
| 208 | break; |
| 209 | case XML_ENTITY_DECL: |
| 210 | xmlGenericError(xmlGenericErrorContext, "?entdecl? "); |
| 211 | break; |
| 212 | case XML_NAMESPACE_DECL: |
| 213 | xmlGenericError(xmlGenericErrorContext, "?nsdecl? "); |
| 214 | break; |
| 215 | case XML_XINCLUDE_START: |
| 216 | xmlGenericError(xmlGenericErrorContext, "incstart "); |
| 217 | break; |
| 218 | case XML_XINCLUDE_END: |
| 219 | xmlGenericError(xmlGenericErrorContext, "incend "); |
| 220 | break; |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | static void |
| 225 | xmlValidPrintNodeList(xmlNodePtr cur) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 226 | if (cur == NULL) |
| 227 | xmlGenericError(xmlGenericErrorContext, "null "); |
| 228 | while (cur != NULL) { |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 229 | xmlValidPrintNode(cur); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 230 | cur = cur->next; |
| 231 | } |
| 232 | } |
| 233 | |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 234 | static void |
| 235 | xmlValidDebug(xmlNodePtr cur, xmlElementContentPtr cont) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 236 | char expr[1000]; |
| 237 | |
| 238 | expr[0] = 0; |
| 239 | xmlGenericError(xmlGenericErrorContext, "valid: "); |
| 240 | xmlValidPrintNodeList(cur); |
| 241 | xmlGenericError(xmlGenericErrorContext, "against "); |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 242 | xmlSprintfElementContent(expr, cont, 1); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 243 | xmlGenericError(xmlGenericErrorContext, "%s\n", expr); |
| 244 | } |
| 245 | |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 246 | static void |
| 247 | xmlValidDebugState(xmlValidStatePtr state) { |
| 248 | xmlGenericError(xmlGenericErrorContext, "("); |
| 249 | if (state->cont == NULL) |
| 250 | xmlGenericError(xmlGenericErrorContext, "null,"); |
| 251 | else |
| 252 | switch (state->cont->type) { |
| 253 | case XML_ELEMENT_CONTENT_PCDATA: |
| 254 | xmlGenericError(xmlGenericErrorContext, "pcdata,"); |
| 255 | break; |
| 256 | case XML_ELEMENT_CONTENT_ELEMENT: |
| 257 | xmlGenericError(xmlGenericErrorContext, "%s,", |
| 258 | state->cont->name); |
| 259 | break; |
| 260 | case XML_ELEMENT_CONTENT_SEQ: |
| 261 | xmlGenericError(xmlGenericErrorContext, "seq,"); |
| 262 | break; |
| 263 | case XML_ELEMENT_CONTENT_OR: |
| 264 | xmlGenericError(xmlGenericErrorContext, "or,"); |
| 265 | break; |
| 266 | } |
| 267 | xmlValidPrintNode(state->node); |
| 268 | xmlGenericError(xmlGenericErrorContext, ",%d,%X,%d)", |
| 269 | state->depth, state->occurs, state->state); |
| 270 | } |
| 271 | |
| 272 | static void |
| 273 | xmlValidStateDebug(xmlValidCtxtPtr ctxt) { |
| 274 | int i, j; |
| 275 | |
| 276 | xmlGenericError(xmlGenericErrorContext, "state: "); |
| 277 | xmlValidDebugState(ctxt->vstate); |
| 278 | xmlGenericError(xmlGenericErrorContext, " stack: %d ", |
| 279 | ctxt->vstateNr - 1); |
| 280 | for (i = 0, j = ctxt->vstateNr - 1;(i < 3) && (j > 0);i++,j--) |
| 281 | xmlValidDebugState(&ctxt->vstateTab[j]); |
| 282 | xmlGenericError(xmlGenericErrorContext, "\n"); |
| 283 | } |
| 284 | |
| 285 | /***** |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 286 | #define DEBUG_VALID_STATE(n,c) xmlValidDebug(n,c); |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 287 | *****/ |
| 288 | |
| 289 | #define DEBUG_VALID_STATE(n,c) xmlValidStateDebug(ctxt); |
Daniel Veillard | e356c28 | 2001-03-10 12:32:04 +0000 | [diff] [blame] | 290 | #define DEBUG_VALID_MSG(m) \ |
| 291 | xmlGenericError(xmlGenericErrorContext, "%s\n", m); |
| 292 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 293 | #else |
| 294 | #define DEBUG_VALID_STATE(n,c) |
Daniel Veillard | e356c28 | 2001-03-10 12:32:04 +0000 | [diff] [blame] | 295 | #define DEBUG_VALID_MSG(m) |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 296 | #endif |
| 297 | |
| 298 | /* TODO: use hash table for accesses to elem and attribute dedinitions */ |
| 299 | |
| 300 | #define VERROR \ |
| 301 | if ((ctxt != NULL) && (ctxt->error != NULL)) ctxt->error |
| 302 | |
| 303 | #define VWARNING \ |
| 304 | if ((ctxt != NULL) && (ctxt->warning != NULL)) ctxt->warning |
| 305 | |
| 306 | #define CHECK_DTD \ |
| 307 | if (doc == NULL) return(0); \ |
| 308 | else if ((doc->intSubset == NULL) && \ |
| 309 | (doc->extSubset == NULL)) return(0) |
| 310 | |
| 311 | xmlElementPtr xmlGetDtdElementDesc(xmlDtdPtr dtd, const xmlChar *name); |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 312 | static xmlElementPtr xmlGetDtdElementDesc2(xmlDtdPtr dtd, const xmlChar *name, |
| 313 | int create); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 314 | xmlAttributePtr xmlScanAttributeDecl(xmlDtdPtr dtd, const xmlChar *elem); |
| 315 | |
| 316 | /************************************************************************ |
| 317 | * * |
| 318 | * QName handling helper * |
| 319 | * * |
| 320 | ************************************************************************/ |
| 321 | |
| 322 | /** |
| 323 | * xmlSplitQName2: |
| 324 | * @name: an XML parser context |
| 325 | * @prefix: a xmlChar ** |
| 326 | * |
| 327 | * parse an XML qualified name string |
| 328 | * |
| 329 | * [NS 5] QName ::= (Prefix ':')? LocalPart |
| 330 | * |
| 331 | * [NS 6] Prefix ::= NCName |
| 332 | * |
| 333 | * [NS 7] LocalPart ::= NCName |
| 334 | * |
| 335 | * Returns NULL if not a QName, otherwise the local part, and prefix |
| 336 | * is updated to get the Prefix if any. |
| 337 | */ |
| 338 | |
| 339 | xmlChar * |
| 340 | xmlSplitQName2(const xmlChar *name, xmlChar **prefix) { |
| 341 | int len = 0; |
| 342 | xmlChar *ret = NULL; |
| 343 | |
| 344 | *prefix = NULL; |
| 345 | |
| 346 | /* xml: prefix is not really a namespace */ |
| 347 | if ((name[0] == 'x') && (name[1] == 'm') && |
| 348 | (name[2] == 'l') && (name[3] == ':')) |
| 349 | return(NULL); |
| 350 | |
| 351 | /* nasty but valid */ |
| 352 | if (name[0] == ':') |
| 353 | return(NULL); |
| 354 | |
| 355 | /* |
| 356 | * we are not trying to validate but just to cut, and yes it will |
| 357 | * work even if this is as set of UTF-8 encoded chars |
| 358 | */ |
| 359 | while ((name[len] != 0) && (name[len] != ':')) |
| 360 | len++; |
| 361 | |
| 362 | if (name[len] == 0) |
| 363 | return(NULL); |
| 364 | |
| 365 | *prefix = xmlStrndup(name, len); |
| 366 | ret = xmlStrdup(&name[len + 1]); |
| 367 | |
| 368 | return(ret); |
| 369 | } |
| 370 | |
| 371 | /**************************************************************** |
| 372 | * * |
| 373 | * Util functions for data allocation/deallocation * |
| 374 | * * |
| 375 | ****************************************************************/ |
| 376 | |
| 377 | /** |
| 378 | * xmlNewElementContent: |
| 379 | * @name: the subelement name or NULL |
| 380 | * @type: the type of element content decl |
| 381 | * |
| 382 | * Allocate an element content structure. |
| 383 | * |
| 384 | * Returns NULL if not, othervise the new element content structure |
| 385 | */ |
| 386 | xmlElementContentPtr |
| 387 | xmlNewElementContent(xmlChar *name, xmlElementContentType type) { |
| 388 | xmlElementContentPtr ret; |
| 389 | |
| 390 | switch(type) { |
| 391 | case XML_ELEMENT_CONTENT_ELEMENT: |
| 392 | if (name == NULL) { |
| 393 | xmlGenericError(xmlGenericErrorContext, |
| 394 | "xmlNewElementContent : name == NULL !\n"); |
| 395 | } |
| 396 | break; |
| 397 | case XML_ELEMENT_CONTENT_PCDATA: |
| 398 | case XML_ELEMENT_CONTENT_SEQ: |
| 399 | case XML_ELEMENT_CONTENT_OR: |
| 400 | if (name != NULL) { |
| 401 | xmlGenericError(xmlGenericErrorContext, |
| 402 | "xmlNewElementContent : name != NULL !\n"); |
| 403 | } |
| 404 | break; |
| 405 | default: |
| 406 | xmlGenericError(xmlGenericErrorContext, |
| 407 | "xmlNewElementContent: unknown type %d\n", type); |
| 408 | return(NULL); |
| 409 | } |
| 410 | ret = (xmlElementContentPtr) xmlMalloc(sizeof(xmlElementContent)); |
| 411 | if (ret == NULL) { |
| 412 | xmlGenericError(xmlGenericErrorContext, |
| 413 | "xmlNewElementContent : out of memory!\n"); |
| 414 | return(NULL); |
| 415 | } |
| 416 | ret->type = type; |
| 417 | ret->ocur = XML_ELEMENT_CONTENT_ONCE; |
| 418 | if (name != NULL) |
| 419 | ret->name = xmlStrdup(name); |
| 420 | else |
| 421 | ret->name = NULL; |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 422 | ret->c1 = ret->c2 = ret->parent = NULL; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 423 | return(ret); |
| 424 | } |
| 425 | |
| 426 | /** |
| 427 | * xmlCopyElementContent: |
| 428 | * @content: An element content pointer. |
| 429 | * |
| 430 | * Build a copy of an element content description. |
| 431 | * |
| 432 | * Returns the new xmlElementContentPtr or NULL in case of error. |
| 433 | */ |
| 434 | xmlElementContentPtr |
| 435 | xmlCopyElementContent(xmlElementContentPtr cur) { |
| 436 | xmlElementContentPtr ret; |
| 437 | |
| 438 | if (cur == NULL) return(NULL); |
| 439 | ret = xmlNewElementContent((xmlChar *) cur->name, cur->type); |
| 440 | if (ret == NULL) { |
| 441 | xmlGenericError(xmlGenericErrorContext, |
| 442 | "xmlCopyElementContent : out of memory\n"); |
| 443 | return(NULL); |
| 444 | } |
| 445 | ret->ocur = cur->ocur; |
| 446 | if (cur->c1 != NULL) ret->c1 = xmlCopyElementContent(cur->c1); |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 447 | if (ret->c1 != NULL) |
| 448 | ret->c1->parent = ret; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 449 | if (cur->c2 != NULL) ret->c2 = xmlCopyElementContent(cur->c2); |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 450 | if (ret->c2 != NULL) |
| 451 | ret->c2->parent = ret; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 452 | return(ret); |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * xmlFreeElementContent: |
| 457 | * @cur: the element content tree to free |
| 458 | * |
| 459 | * Free an element content structure. This is a recursive call ! |
| 460 | */ |
| 461 | void |
| 462 | xmlFreeElementContent(xmlElementContentPtr cur) { |
| 463 | if (cur == NULL) return; |
| 464 | switch (cur->type) { |
| 465 | case XML_ELEMENT_CONTENT_PCDATA: |
| 466 | case XML_ELEMENT_CONTENT_ELEMENT: |
| 467 | case XML_ELEMENT_CONTENT_SEQ: |
| 468 | case XML_ELEMENT_CONTENT_OR: |
| 469 | break; |
| 470 | default: |
| 471 | xmlGenericError(xmlGenericErrorContext, |
| 472 | "xmlFreeElementContent : type %d\n", cur->type); |
| 473 | return; |
| 474 | } |
| 475 | if (cur->c1 != NULL) xmlFreeElementContent(cur->c1); |
| 476 | if (cur->c2 != NULL) xmlFreeElementContent(cur->c2); |
| 477 | if (cur->name != NULL) xmlFree((xmlChar *) cur->name); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 478 | xmlFree(cur); |
| 479 | } |
| 480 | |
| 481 | /** |
| 482 | * xmlDumpElementContent: |
| 483 | * @buf: An XML buffer |
| 484 | * @content: An element table |
| 485 | * @glob: 1 if one must print the englobing parenthesis, 0 otherwise |
| 486 | * |
| 487 | * This will dump the content of the element table as an XML DTD definition |
| 488 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 489 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 490 | xmlDumpElementContent(xmlBufferPtr buf, xmlElementContentPtr content, int glob) { |
| 491 | if (content == NULL) return; |
| 492 | |
| 493 | if (glob) xmlBufferWriteChar(buf, "("); |
| 494 | switch (content->type) { |
| 495 | case XML_ELEMENT_CONTENT_PCDATA: |
| 496 | xmlBufferWriteChar(buf, "#PCDATA"); |
| 497 | break; |
| 498 | case XML_ELEMENT_CONTENT_ELEMENT: |
| 499 | xmlBufferWriteCHAR(buf, content->name); |
| 500 | break; |
| 501 | case XML_ELEMENT_CONTENT_SEQ: |
| 502 | if ((content->c1->type == XML_ELEMENT_CONTENT_OR) || |
| 503 | (content->c1->type == XML_ELEMENT_CONTENT_SEQ)) |
| 504 | xmlDumpElementContent(buf, content->c1, 1); |
| 505 | else |
| 506 | xmlDumpElementContent(buf, content->c1, 0); |
| 507 | xmlBufferWriteChar(buf, " , "); |
| 508 | if (content->c2->type == XML_ELEMENT_CONTENT_OR) |
| 509 | xmlDumpElementContent(buf, content->c2, 1); |
| 510 | else |
| 511 | xmlDumpElementContent(buf, content->c2, 0); |
| 512 | break; |
| 513 | case XML_ELEMENT_CONTENT_OR: |
| 514 | if ((content->c1->type == XML_ELEMENT_CONTENT_OR) || |
| 515 | (content->c1->type == XML_ELEMENT_CONTENT_SEQ)) |
| 516 | xmlDumpElementContent(buf, content->c1, 1); |
| 517 | else |
| 518 | xmlDumpElementContent(buf, content->c1, 0); |
| 519 | xmlBufferWriteChar(buf, " | "); |
| 520 | if (content->c2->type == XML_ELEMENT_CONTENT_SEQ) |
| 521 | xmlDumpElementContent(buf, content->c2, 1); |
| 522 | else |
| 523 | xmlDumpElementContent(buf, content->c2, 0); |
| 524 | break; |
| 525 | default: |
| 526 | xmlGenericError(xmlGenericErrorContext, |
| 527 | "xmlDumpElementContent: unknown type %d\n", |
| 528 | content->type); |
| 529 | } |
| 530 | if (glob) |
| 531 | xmlBufferWriteChar(buf, ")"); |
| 532 | switch (content->ocur) { |
| 533 | case XML_ELEMENT_CONTENT_ONCE: |
| 534 | break; |
| 535 | case XML_ELEMENT_CONTENT_OPT: |
| 536 | xmlBufferWriteChar(buf, "?"); |
| 537 | break; |
| 538 | case XML_ELEMENT_CONTENT_MULT: |
| 539 | xmlBufferWriteChar(buf, "*"); |
| 540 | break; |
| 541 | case XML_ELEMENT_CONTENT_PLUS: |
| 542 | xmlBufferWriteChar(buf, "+"); |
| 543 | break; |
| 544 | } |
| 545 | } |
| 546 | |
| 547 | /** |
| 548 | * xmlSprintfElementContent: |
| 549 | * @buf: an output buffer |
| 550 | * @content: An element table |
| 551 | * @glob: 1 if one must print the englobing parenthesis, 0 otherwise |
| 552 | * |
| 553 | * This will dump the content of the element content definition |
| 554 | * Intended just for the debug routine |
| 555 | */ |
| 556 | void |
| 557 | xmlSprintfElementContent(char *buf, xmlElementContentPtr content, int glob) { |
| 558 | if (content == NULL) return; |
| 559 | if (glob) strcat(buf, "("); |
| 560 | switch (content->type) { |
| 561 | case XML_ELEMENT_CONTENT_PCDATA: |
| 562 | strcat(buf, "#PCDATA"); |
| 563 | break; |
| 564 | case XML_ELEMENT_CONTENT_ELEMENT: |
| 565 | strcat(buf, (char *) content->name); |
| 566 | break; |
| 567 | case XML_ELEMENT_CONTENT_SEQ: |
| 568 | if ((content->c1->type == XML_ELEMENT_CONTENT_OR) || |
| 569 | (content->c1->type == XML_ELEMENT_CONTENT_SEQ)) |
| 570 | xmlSprintfElementContent(buf, content->c1, 1); |
| 571 | else |
| 572 | xmlSprintfElementContent(buf, content->c1, 0); |
| 573 | strcat(buf, " , "); |
| 574 | if (content->c2->type == XML_ELEMENT_CONTENT_OR) |
| 575 | xmlSprintfElementContent(buf, content->c2, 1); |
| 576 | else |
| 577 | xmlSprintfElementContent(buf, content->c2, 0); |
| 578 | break; |
| 579 | case XML_ELEMENT_CONTENT_OR: |
| 580 | if ((content->c1->type == XML_ELEMENT_CONTENT_OR) || |
| 581 | (content->c1->type == XML_ELEMENT_CONTENT_SEQ)) |
| 582 | xmlSprintfElementContent(buf, content->c1, 1); |
| 583 | else |
| 584 | xmlSprintfElementContent(buf, content->c1, 0); |
| 585 | strcat(buf, " | "); |
| 586 | if (content->c2->type == XML_ELEMENT_CONTENT_SEQ) |
| 587 | xmlSprintfElementContent(buf, content->c2, 1); |
| 588 | else |
| 589 | xmlSprintfElementContent(buf, content->c2, 0); |
| 590 | break; |
| 591 | } |
| 592 | if (glob) |
| 593 | strcat(buf, ")"); |
| 594 | switch (content->ocur) { |
| 595 | case XML_ELEMENT_CONTENT_ONCE: |
| 596 | break; |
| 597 | case XML_ELEMENT_CONTENT_OPT: |
| 598 | strcat(buf, "?"); |
| 599 | break; |
| 600 | case XML_ELEMENT_CONTENT_MULT: |
| 601 | strcat(buf, "*"); |
| 602 | break; |
| 603 | case XML_ELEMENT_CONTENT_PLUS: |
| 604 | strcat(buf, "+"); |
| 605 | break; |
| 606 | } |
| 607 | } |
| 608 | |
| 609 | /**************************************************************** |
| 610 | * * |
| 611 | * Registration of DTD declarations * |
| 612 | * * |
| 613 | ****************************************************************/ |
| 614 | |
| 615 | /** |
| 616 | * xmlCreateElementTable: |
| 617 | * |
| 618 | * create and initialize an empty element hash table. |
| 619 | * |
| 620 | * Returns the xmlElementTablePtr just created or NULL in case of error. |
| 621 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 622 | static xmlElementTablePtr |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 623 | xmlCreateElementTable(void) { |
| 624 | return(xmlHashCreate(0)); |
| 625 | } |
| 626 | |
| 627 | /** |
| 628 | * xmlFreeElement: |
| 629 | * @elem: An element |
| 630 | * |
| 631 | * Deallocate the memory used by an element definition |
| 632 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 633 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 634 | xmlFreeElement(xmlElementPtr elem) { |
| 635 | if (elem == NULL) return; |
| 636 | xmlUnlinkNode((xmlNodePtr) elem); |
| 637 | xmlFreeElementContent(elem->content); |
| 638 | if (elem->name != NULL) |
| 639 | xmlFree((xmlChar *) elem->name); |
| 640 | if (elem->prefix != NULL) |
| 641 | xmlFree((xmlChar *) elem->prefix); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 642 | xmlFree(elem); |
| 643 | } |
| 644 | |
| 645 | |
| 646 | /** |
| 647 | * xmlAddElementDecl: |
| 648 | * @ctxt: the validation context |
| 649 | * @dtd: pointer to the DTD |
| 650 | * @name: the entity name |
| 651 | * @type: the element type |
| 652 | * @content: the element content tree or NULL |
| 653 | * |
| 654 | * Register a new element declaration |
| 655 | * |
| 656 | * Returns NULL if not, othervise the entity |
| 657 | */ |
| 658 | xmlElementPtr |
| 659 | xmlAddElementDecl(xmlValidCtxtPtr ctxt, xmlDtdPtr dtd, const xmlChar *name, |
| 660 | xmlElementTypeVal type, |
| 661 | xmlElementContentPtr content) { |
| 662 | xmlElementPtr ret; |
| 663 | xmlElementTablePtr table; |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 664 | xmlAttributePtr oldAttributes = NULL; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 665 | xmlChar *ns, *uqname; |
| 666 | |
| 667 | if (dtd == NULL) { |
| 668 | xmlGenericError(xmlGenericErrorContext, |
| 669 | "xmlAddElementDecl: dtd == NULL\n"); |
| 670 | return(NULL); |
| 671 | } |
| 672 | if (name == NULL) { |
| 673 | xmlGenericError(xmlGenericErrorContext, |
| 674 | "xmlAddElementDecl: name == NULL\n"); |
| 675 | return(NULL); |
| 676 | } |
| 677 | switch (type) { |
| 678 | case XML_ELEMENT_TYPE_EMPTY: |
| 679 | if (content != NULL) { |
| 680 | xmlGenericError(xmlGenericErrorContext, |
| 681 | "xmlAddElementDecl: content != NULL for EMPTY\n"); |
| 682 | return(NULL); |
| 683 | } |
| 684 | break; |
| 685 | case XML_ELEMENT_TYPE_ANY: |
| 686 | if (content != NULL) { |
| 687 | xmlGenericError(xmlGenericErrorContext, |
| 688 | "xmlAddElementDecl: content != NULL for ANY\n"); |
| 689 | return(NULL); |
| 690 | } |
| 691 | break; |
| 692 | case XML_ELEMENT_TYPE_MIXED: |
| 693 | if (content == NULL) { |
| 694 | xmlGenericError(xmlGenericErrorContext, |
| 695 | "xmlAddElementDecl: content == NULL for MIXED\n"); |
| 696 | return(NULL); |
| 697 | } |
| 698 | break; |
| 699 | case XML_ELEMENT_TYPE_ELEMENT: |
| 700 | if (content == NULL) { |
| 701 | xmlGenericError(xmlGenericErrorContext, |
| 702 | "xmlAddElementDecl: content == NULL for ELEMENT\n"); |
| 703 | return(NULL); |
| 704 | } |
| 705 | break; |
| 706 | default: |
| 707 | xmlGenericError(xmlGenericErrorContext, |
| 708 | "xmlAddElementDecl: unknown type %d\n", type); |
| 709 | return(NULL); |
| 710 | } |
| 711 | |
| 712 | /* |
| 713 | * check if name is a QName |
| 714 | */ |
| 715 | uqname = xmlSplitQName2(name, &ns); |
| 716 | if (uqname != NULL) |
| 717 | name = uqname; |
| 718 | |
| 719 | /* |
| 720 | * Create the Element table if needed. |
| 721 | */ |
| 722 | table = (xmlElementTablePtr) dtd->elements; |
| 723 | if (table == NULL) { |
| 724 | table = xmlCreateElementTable(); |
| 725 | dtd->elements = (void *) table; |
| 726 | } |
| 727 | if (table == NULL) { |
| 728 | xmlGenericError(xmlGenericErrorContext, |
| 729 | "xmlAddElementDecl: Table creation failed!\n"); |
| 730 | return(NULL); |
| 731 | } |
| 732 | |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 733 | /* |
| 734 | * lookup old attributes inserted on an undefined element in the |
| 735 | * internal subset. |
| 736 | */ |
| 737 | if ((dtd->doc != NULL) && (dtd->doc->intSubset != NULL)) { |
| 738 | ret = xmlHashLookup2(dtd->doc->intSubset->elements, name, ns); |
| 739 | if ((ret != NULL) && (ret->etype == XML_ELEMENT_TYPE_UNDEFINED)) { |
| 740 | oldAttributes = ret->attributes; |
| 741 | ret->attributes = NULL; |
| 742 | xmlHashRemoveEntry2(dtd->doc->intSubset->elements, name, ns, NULL); |
| 743 | xmlFreeElement(ret); |
| 744 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 745 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 746 | |
| 747 | /* |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 748 | * The element may already be present if one of its attribute |
| 749 | * was registered first |
| 750 | */ |
| 751 | ret = xmlHashLookup2(table, name, ns); |
| 752 | if (ret != NULL) { |
| 753 | if (ret->etype != XML_ELEMENT_TYPE_UNDEFINED) { |
| 754 | /* |
| 755 | * The element is already defined in this Dtd. |
| 756 | */ |
| 757 | VERROR(ctxt->userData, "Redefinition of element %s\n", name); |
| 758 | if (uqname != NULL) |
| 759 | xmlFree(uqname); |
| 760 | return(NULL); |
| 761 | } |
| 762 | } else { |
| 763 | ret = (xmlElementPtr) xmlMalloc(sizeof(xmlElement)); |
| 764 | if (ret == NULL) { |
| 765 | xmlGenericError(xmlGenericErrorContext, |
| 766 | "xmlAddElementDecl: out of memory\n"); |
| 767 | return(NULL); |
| 768 | } |
| 769 | memset(ret, 0, sizeof(xmlElement)); |
| 770 | ret->type = XML_ELEMENT_DECL; |
| 771 | |
| 772 | /* |
| 773 | * fill the structure. |
| 774 | */ |
| 775 | ret->name = xmlStrdup(name); |
| 776 | ret->prefix = ns; |
| 777 | |
| 778 | /* |
| 779 | * Validity Check: |
| 780 | * Insertion must not fail |
| 781 | */ |
| 782 | if (xmlHashAddEntry2(table, name, ns, ret)) { |
| 783 | /* |
| 784 | * The element is already defined in this Dtd. |
| 785 | */ |
| 786 | VERROR(ctxt->userData, "Redefinition of element %s\n", name); |
| 787 | xmlFreeElement(ret); |
| 788 | if (uqname != NULL) |
| 789 | xmlFree(uqname); |
| 790 | return(NULL); |
| 791 | } |
| 792 | } |
| 793 | |
| 794 | /* |
| 795 | * Finish to fill the structure. |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 796 | */ |
| 797 | ret->etype = type; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 798 | ret->content = xmlCopyElementContent(content); |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 799 | ret->attributes = oldAttributes; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 800 | |
| 801 | /* |
| 802 | * Link it to the Dtd |
| 803 | */ |
| 804 | ret->parent = dtd; |
| 805 | ret->doc = dtd->doc; |
| 806 | if (dtd->last == NULL) { |
| 807 | dtd->children = dtd->last = (xmlNodePtr) ret; |
| 808 | } else { |
| 809 | dtd->last->next = (xmlNodePtr) ret; |
| 810 | ret->prev = dtd->last; |
| 811 | dtd->last = (xmlNodePtr) ret; |
| 812 | } |
| 813 | if (uqname != NULL) |
| 814 | xmlFree(uqname); |
| 815 | return(ret); |
| 816 | } |
| 817 | |
| 818 | /** |
| 819 | * xmlFreeElementTable: |
| 820 | * @table: An element table |
| 821 | * |
| 822 | * Deallocate the memory used by an element hash table. |
| 823 | */ |
| 824 | void |
| 825 | xmlFreeElementTable(xmlElementTablePtr table) { |
| 826 | xmlHashFree(table, (xmlHashDeallocator) xmlFreeElement); |
| 827 | } |
| 828 | |
| 829 | /** |
| 830 | * xmlCopyElement: |
| 831 | * @elem: An element |
| 832 | * |
| 833 | * Build a copy of an element. |
| 834 | * |
| 835 | * Returns the new xmlElementPtr or NULL in case of error. |
| 836 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 837 | static xmlElementPtr |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 838 | xmlCopyElement(xmlElementPtr elem) { |
| 839 | xmlElementPtr cur; |
| 840 | |
| 841 | cur = (xmlElementPtr) xmlMalloc(sizeof(xmlElement)); |
| 842 | if (cur == NULL) { |
| 843 | xmlGenericError(xmlGenericErrorContext, |
| 844 | "xmlCopyElement: out of memory !\n"); |
| 845 | return(NULL); |
| 846 | } |
| 847 | memset(cur, 0, sizeof(xmlElement)); |
| 848 | cur->type = XML_ELEMENT_DECL; |
| 849 | cur->etype = elem->etype; |
| 850 | if (elem->name != NULL) |
| 851 | cur->name = xmlStrdup(elem->name); |
| 852 | else |
| 853 | cur->name = NULL; |
| 854 | if (elem->prefix != NULL) |
| 855 | cur->prefix = xmlStrdup(elem->prefix); |
| 856 | else |
| 857 | cur->prefix = NULL; |
| 858 | cur->content = xmlCopyElementContent(elem->content); |
| 859 | /* TODO : rebuild the attribute list on the copy */ |
| 860 | cur->attributes = NULL; |
| 861 | return(cur); |
| 862 | } |
| 863 | |
| 864 | /** |
| 865 | * xmlCopyElementTable: |
| 866 | * @table: An element table |
| 867 | * |
| 868 | * Build a copy of an element table. |
| 869 | * |
| 870 | * Returns the new xmlElementTablePtr or NULL in case of error. |
| 871 | */ |
| 872 | xmlElementTablePtr |
| 873 | xmlCopyElementTable(xmlElementTablePtr table) { |
| 874 | return((xmlElementTablePtr) xmlHashCopy(table, |
| 875 | (xmlHashCopier) xmlCopyElement)); |
| 876 | } |
| 877 | |
| 878 | /** |
| 879 | * xmlDumpElementDecl: |
| 880 | * @buf: the XML buffer output |
| 881 | * @elem: An element table |
| 882 | * |
| 883 | * This will dump the content of the element declaration as an XML |
| 884 | * DTD definition |
| 885 | */ |
| 886 | void |
| 887 | xmlDumpElementDecl(xmlBufferPtr buf, xmlElementPtr elem) { |
| 888 | switch (elem->etype) { |
| 889 | case XML_ELEMENT_TYPE_EMPTY: |
| 890 | xmlBufferWriteChar(buf, "<!ELEMENT "); |
| 891 | xmlBufferWriteCHAR(buf, elem->name); |
| 892 | xmlBufferWriteChar(buf, " EMPTY>\n"); |
| 893 | break; |
| 894 | case XML_ELEMENT_TYPE_ANY: |
| 895 | xmlBufferWriteChar(buf, "<!ELEMENT "); |
| 896 | xmlBufferWriteCHAR(buf, elem->name); |
| 897 | xmlBufferWriteChar(buf, " ANY>\n"); |
| 898 | break; |
| 899 | case XML_ELEMENT_TYPE_MIXED: |
| 900 | xmlBufferWriteChar(buf, "<!ELEMENT "); |
| 901 | xmlBufferWriteCHAR(buf, elem->name); |
| 902 | xmlBufferWriteChar(buf, " "); |
| 903 | xmlDumpElementContent(buf, elem->content, 1); |
| 904 | xmlBufferWriteChar(buf, ">\n"); |
| 905 | break; |
| 906 | case XML_ELEMENT_TYPE_ELEMENT: |
| 907 | xmlBufferWriteChar(buf, "<!ELEMENT "); |
| 908 | xmlBufferWriteCHAR(buf, elem->name); |
| 909 | xmlBufferWriteChar(buf, " "); |
| 910 | xmlDumpElementContent(buf, elem->content, 1); |
| 911 | xmlBufferWriteChar(buf, ">\n"); |
| 912 | break; |
| 913 | default: |
| 914 | xmlGenericError(xmlGenericErrorContext, |
| 915 | "xmlDumpElementDecl: internal: unknown type %d\n", |
| 916 | elem->etype); |
| 917 | } |
| 918 | } |
| 919 | |
| 920 | /** |
| 921 | * xmlDumpElementTable: |
| 922 | * @buf: the XML buffer output |
| 923 | * @table: An element table |
| 924 | * |
| 925 | * This will dump the content of the element table as an XML DTD definition |
| 926 | */ |
| 927 | void |
| 928 | xmlDumpElementTable(xmlBufferPtr buf, xmlElementTablePtr table) { |
| 929 | xmlHashScan(table, (xmlHashScanner) xmlDumpElementDecl, buf); |
| 930 | } |
| 931 | |
| 932 | /** |
| 933 | * xmlCreateEnumeration: |
| 934 | * @name: the enumeration name or NULL |
| 935 | * |
| 936 | * create and initialize an enumeration attribute node. |
| 937 | * |
| 938 | * Returns the xmlEnumerationPtr just created or NULL in case |
| 939 | * of error. |
| 940 | */ |
| 941 | xmlEnumerationPtr |
| 942 | xmlCreateEnumeration(xmlChar *name) { |
| 943 | xmlEnumerationPtr ret; |
| 944 | |
| 945 | ret = (xmlEnumerationPtr) xmlMalloc(sizeof(xmlEnumeration)); |
| 946 | if (ret == NULL) { |
| 947 | xmlGenericError(xmlGenericErrorContext, |
| 948 | "xmlCreateEnumeration : xmlMalloc(%ld) failed\n", |
| 949 | (long)sizeof(xmlEnumeration)); |
| 950 | return(NULL); |
| 951 | } |
| 952 | memset(ret, 0, sizeof(xmlEnumeration)); |
| 953 | |
| 954 | if (name != NULL) |
| 955 | ret->name = xmlStrdup(name); |
| 956 | return(ret); |
| 957 | } |
| 958 | |
| 959 | /** |
| 960 | * xmlFreeEnumeration: |
| 961 | * @cur: the tree to free. |
| 962 | * |
| 963 | * free an enumeration attribute node (recursive). |
| 964 | */ |
| 965 | void |
| 966 | xmlFreeEnumeration(xmlEnumerationPtr cur) { |
| 967 | if (cur == NULL) return; |
| 968 | |
| 969 | if (cur->next != NULL) xmlFreeEnumeration(cur->next); |
| 970 | |
| 971 | if (cur->name != NULL) xmlFree((xmlChar *) cur->name); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 972 | xmlFree(cur); |
| 973 | } |
| 974 | |
| 975 | /** |
| 976 | * xmlCopyEnumeration: |
| 977 | * @cur: the tree to copy. |
| 978 | * |
| 979 | * Copy an enumeration attribute node (recursive). |
| 980 | * |
| 981 | * Returns the xmlEnumerationPtr just created or NULL in case |
| 982 | * of error. |
| 983 | */ |
| 984 | xmlEnumerationPtr |
| 985 | xmlCopyEnumeration(xmlEnumerationPtr cur) { |
| 986 | xmlEnumerationPtr ret; |
| 987 | |
| 988 | if (cur == NULL) return(NULL); |
| 989 | ret = xmlCreateEnumeration((xmlChar *) cur->name); |
| 990 | |
| 991 | if (cur->next != NULL) ret->next = xmlCopyEnumeration(cur->next); |
| 992 | else ret->next = NULL; |
| 993 | |
| 994 | return(ret); |
| 995 | } |
| 996 | |
| 997 | /** |
| 998 | * xmlDumpEnumeration: |
| 999 | * @buf: the XML buffer output |
| 1000 | * @enum: An enumeration |
| 1001 | * |
| 1002 | * This will dump the content of the enumeration |
| 1003 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1004 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1005 | xmlDumpEnumeration(xmlBufferPtr buf, xmlEnumerationPtr cur) { |
| 1006 | if (cur == NULL) return; |
| 1007 | |
| 1008 | xmlBufferWriteCHAR(buf, cur->name); |
| 1009 | if (cur->next == NULL) |
| 1010 | xmlBufferWriteChar(buf, ")"); |
| 1011 | else { |
| 1012 | xmlBufferWriteChar(buf, " | "); |
| 1013 | xmlDumpEnumeration(buf, cur->next); |
| 1014 | } |
| 1015 | } |
| 1016 | |
| 1017 | /** |
| 1018 | * xmlCreateAttributeTable: |
| 1019 | * |
| 1020 | * create and initialize an empty attribute hash table. |
| 1021 | * |
| 1022 | * Returns the xmlAttributeTablePtr just created or NULL in case |
| 1023 | * of error. |
| 1024 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1025 | static xmlAttributeTablePtr |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1026 | xmlCreateAttributeTable(void) { |
| 1027 | return(xmlHashCreate(0)); |
| 1028 | } |
| 1029 | |
| 1030 | /** |
| 1031 | * xmlScanAttributeDeclCallback: |
| 1032 | * @attr: the attribute decl |
| 1033 | * @list: the list to update |
| 1034 | * |
| 1035 | * Callback called by xmlScanAttributeDecl when a new attribute |
| 1036 | * has to be entered in the list. |
| 1037 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1038 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1039 | xmlScanAttributeDeclCallback(xmlAttributePtr attr, xmlAttributePtr *list, |
Daniel Veillard | c86a4fa | 2001-03-26 16:28:29 +0000 | [diff] [blame] | 1040 | const xmlChar* name ATTRIBUTE_UNUSED) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1041 | attr->nexth = *list; |
| 1042 | *list = attr; |
| 1043 | } |
| 1044 | |
| 1045 | /** |
| 1046 | * xmlScanAttributeDecl: |
| 1047 | * @dtd: pointer to the DTD |
| 1048 | * @elem: the element name |
| 1049 | * |
| 1050 | * When inserting a new element scan the DtD for existing attributes |
| 1051 | * for taht element and initialize the Attribute chain |
| 1052 | * |
| 1053 | * Returns the pointer to the first attribute decl in the chain, |
| 1054 | * possibly NULL. |
| 1055 | */ |
| 1056 | xmlAttributePtr |
| 1057 | xmlScanAttributeDecl(xmlDtdPtr dtd, const xmlChar *elem) { |
| 1058 | xmlAttributePtr ret = NULL; |
| 1059 | xmlAttributeTablePtr table; |
| 1060 | |
| 1061 | if (dtd == NULL) { |
| 1062 | xmlGenericError(xmlGenericErrorContext, |
| 1063 | "xmlScanAttributeDecl: dtd == NULL\n"); |
| 1064 | return(NULL); |
| 1065 | } |
| 1066 | if (elem == NULL) { |
| 1067 | xmlGenericError(xmlGenericErrorContext, |
| 1068 | "xmlScanAttributeDecl: elem == NULL\n"); |
| 1069 | return(NULL); |
| 1070 | } |
| 1071 | table = (xmlAttributeTablePtr) dtd->attributes; |
| 1072 | if (table == NULL) |
| 1073 | return(NULL); |
| 1074 | |
| 1075 | /* WRONG !!! */ |
| 1076 | xmlHashScan3(table, NULL, NULL, elem, |
| 1077 | (xmlHashScanner) xmlScanAttributeDeclCallback, &ret); |
| 1078 | return(ret); |
| 1079 | } |
| 1080 | |
| 1081 | /** |
| 1082 | * xmlScanIDAttributeDecl: |
| 1083 | * @ctxt: the validation context |
| 1084 | * @elem: the element name |
| 1085 | * |
| 1086 | * Verify that the element don't have too many ID attributes |
| 1087 | * declared. |
| 1088 | * |
| 1089 | * Returns the number of ID attributes found. |
| 1090 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1091 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1092 | xmlScanIDAttributeDecl(xmlValidCtxtPtr ctxt, xmlElementPtr elem) { |
| 1093 | xmlAttributePtr cur; |
| 1094 | int ret = 0; |
| 1095 | |
| 1096 | if (elem == NULL) return(0); |
| 1097 | cur = elem->attributes; |
| 1098 | while (cur != NULL) { |
| 1099 | if (cur->atype == XML_ATTRIBUTE_ID) { |
| 1100 | ret ++; |
| 1101 | if (ret > 1) |
| 1102 | VERROR(ctxt->userData, |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 1103 | "Element %s has too many ID attributes defined : %s\n", |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1104 | elem->name, cur->name); |
| 1105 | } |
| 1106 | cur = cur->nexth; |
| 1107 | } |
| 1108 | return(ret); |
| 1109 | } |
| 1110 | |
| 1111 | /** |
| 1112 | * xmlFreeAttribute: |
| 1113 | * @elem: An attribute |
| 1114 | * |
| 1115 | * Deallocate the memory used by an attribute definition |
| 1116 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1117 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1118 | xmlFreeAttribute(xmlAttributePtr attr) { |
| 1119 | if (attr == NULL) return; |
| 1120 | xmlUnlinkNode((xmlNodePtr) attr); |
| 1121 | if (attr->tree != NULL) |
| 1122 | xmlFreeEnumeration(attr->tree); |
| 1123 | if (attr->elem != NULL) |
| 1124 | xmlFree((xmlChar *) attr->elem); |
| 1125 | if (attr->name != NULL) |
| 1126 | xmlFree((xmlChar *) attr->name); |
| 1127 | if (attr->defaultValue != NULL) |
| 1128 | xmlFree((xmlChar *) attr->defaultValue); |
| 1129 | if (attr->prefix != NULL) |
| 1130 | xmlFree((xmlChar *) attr->prefix); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1131 | xmlFree(attr); |
| 1132 | } |
| 1133 | |
| 1134 | |
| 1135 | /** |
| 1136 | * xmlAddAttributeDecl: |
| 1137 | * @ctxt: the validation context |
| 1138 | * @dtd: pointer to the DTD |
| 1139 | * @elem: the element name |
| 1140 | * @name: the attribute name |
| 1141 | * @ns: the attribute namespace prefix |
| 1142 | * @type: the attribute type |
| 1143 | * @def: the attribute default type |
| 1144 | * @defaultValue: the attribute default value |
| 1145 | * @tree: if it's an enumeration, the associated list |
| 1146 | * |
| 1147 | * Register a new attribute declaration |
| 1148 | * Note that @tree becomes the ownership of the DTD |
| 1149 | * |
| 1150 | * Returns NULL if not new, othervise the attribute decl |
| 1151 | */ |
| 1152 | xmlAttributePtr |
| 1153 | xmlAddAttributeDecl(xmlValidCtxtPtr ctxt, xmlDtdPtr dtd, const xmlChar *elem, |
| 1154 | const xmlChar *name, const xmlChar *ns, |
| 1155 | xmlAttributeType type, xmlAttributeDefault def, |
| 1156 | const xmlChar *defaultValue, xmlEnumerationPtr tree) { |
| 1157 | xmlAttributePtr ret; |
| 1158 | xmlAttributeTablePtr table; |
| 1159 | xmlElementPtr elemDef; |
| 1160 | |
| 1161 | if (dtd == NULL) { |
| 1162 | xmlGenericError(xmlGenericErrorContext, |
| 1163 | "xmlAddAttributeDecl: dtd == NULL\n"); |
| 1164 | xmlFreeEnumeration(tree); |
| 1165 | return(NULL); |
| 1166 | } |
| 1167 | if (name == NULL) { |
| 1168 | xmlGenericError(xmlGenericErrorContext, |
| 1169 | "xmlAddAttributeDecl: name == NULL\n"); |
| 1170 | xmlFreeEnumeration(tree); |
| 1171 | return(NULL); |
| 1172 | } |
| 1173 | if (elem == NULL) { |
| 1174 | xmlGenericError(xmlGenericErrorContext, |
| 1175 | "xmlAddAttributeDecl: elem == NULL\n"); |
| 1176 | xmlFreeEnumeration(tree); |
| 1177 | return(NULL); |
| 1178 | } |
| 1179 | /* |
| 1180 | * Check the type and possibly the default value. |
| 1181 | */ |
| 1182 | switch (type) { |
| 1183 | case XML_ATTRIBUTE_CDATA: |
| 1184 | break; |
| 1185 | case XML_ATTRIBUTE_ID: |
| 1186 | break; |
| 1187 | case XML_ATTRIBUTE_IDREF: |
| 1188 | break; |
| 1189 | case XML_ATTRIBUTE_IDREFS: |
| 1190 | break; |
| 1191 | case XML_ATTRIBUTE_ENTITY: |
| 1192 | break; |
| 1193 | case XML_ATTRIBUTE_ENTITIES: |
| 1194 | break; |
| 1195 | case XML_ATTRIBUTE_NMTOKEN: |
| 1196 | break; |
| 1197 | case XML_ATTRIBUTE_NMTOKENS: |
| 1198 | break; |
| 1199 | case XML_ATTRIBUTE_ENUMERATION: |
| 1200 | break; |
| 1201 | case XML_ATTRIBUTE_NOTATION: |
| 1202 | break; |
| 1203 | default: |
| 1204 | xmlGenericError(xmlGenericErrorContext, |
| 1205 | "xmlAddAttributeDecl: unknown type %d\n", type); |
| 1206 | xmlFreeEnumeration(tree); |
| 1207 | return(NULL); |
| 1208 | } |
| 1209 | if ((defaultValue != NULL) && |
| 1210 | (!xmlValidateAttributeValue(type, defaultValue))) { |
| 1211 | VERROR(ctxt->userData, "Attribute %s on %s: invalid default value\n", |
| 1212 | elem, name, defaultValue); |
| 1213 | defaultValue = NULL; |
| 1214 | } |
| 1215 | |
| 1216 | /* |
| 1217 | * Create the Attribute table if needed. |
| 1218 | */ |
| 1219 | table = (xmlAttributeTablePtr) dtd->attributes; |
| 1220 | if (table == NULL) { |
| 1221 | table = xmlCreateAttributeTable(); |
| 1222 | dtd->attributes = (void *) table; |
| 1223 | } |
| 1224 | if (table == NULL) { |
| 1225 | xmlGenericError(xmlGenericErrorContext, |
| 1226 | "xmlAddAttributeDecl: Table creation failed!\n"); |
| 1227 | return(NULL); |
| 1228 | } |
| 1229 | |
| 1230 | |
| 1231 | ret = (xmlAttributePtr) xmlMalloc(sizeof(xmlAttribute)); |
| 1232 | if (ret == NULL) { |
| 1233 | xmlGenericError(xmlGenericErrorContext, |
| 1234 | "xmlAddAttributeDecl: out of memory\n"); |
| 1235 | return(NULL); |
| 1236 | } |
| 1237 | memset(ret, 0, sizeof(xmlAttribute)); |
| 1238 | ret->type = XML_ATTRIBUTE_DECL; |
| 1239 | |
| 1240 | /* |
| 1241 | * fill the structure. |
| 1242 | */ |
| 1243 | ret->atype = type; |
| 1244 | ret->name = xmlStrdup(name); |
| 1245 | ret->prefix = xmlStrdup(ns); |
| 1246 | ret->elem = xmlStrdup(elem); |
| 1247 | ret->def = def; |
| 1248 | ret->tree = tree; |
| 1249 | if (defaultValue != NULL) |
| 1250 | ret->defaultValue = xmlStrdup(defaultValue); |
| 1251 | |
| 1252 | /* |
| 1253 | * Validity Check: |
| 1254 | * Search the DTD for previous declarations of the ATTLIST |
| 1255 | */ |
| 1256 | if (xmlHashAddEntry3(table, name, ns, elem, ret) < 0) { |
| 1257 | /* |
| 1258 | * The attribute is already defined in this Dtd. |
| 1259 | */ |
| 1260 | VWARNING(ctxt->userData, |
| 1261 | "Attribute %s on %s: already defined\n", |
| 1262 | name, elem); |
| 1263 | xmlFreeAttribute(ret); |
| 1264 | return(NULL); |
| 1265 | } |
| 1266 | |
| 1267 | /* |
| 1268 | * Validity Check: |
| 1269 | * Multiple ID per element |
| 1270 | */ |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 1271 | elemDef = xmlGetDtdElementDesc2(dtd, elem, 1); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1272 | if (elemDef != NULL) { |
| 1273 | if ((type == XML_ATTRIBUTE_ID) && |
| 1274 | (xmlScanIDAttributeDecl(NULL, elemDef) != 0)) |
| 1275 | VERROR(ctxt->userData, |
| 1276 | "Element %s has too may ID attributes defined : %s\n", |
| 1277 | elem, name); |
| 1278 | ret->nexth = elemDef->attributes; |
| 1279 | elemDef->attributes = ret; |
| 1280 | } |
| 1281 | |
| 1282 | /* |
| 1283 | * Link it to the Dtd |
| 1284 | */ |
| 1285 | ret->parent = dtd; |
| 1286 | ret->doc = dtd->doc; |
| 1287 | if (dtd->last == NULL) { |
| 1288 | dtd->children = dtd->last = (xmlNodePtr) ret; |
| 1289 | } else { |
| 1290 | dtd->last->next = (xmlNodePtr) ret; |
| 1291 | ret->prev = dtd->last; |
| 1292 | dtd->last = (xmlNodePtr) ret; |
| 1293 | } |
| 1294 | return(ret); |
| 1295 | } |
| 1296 | |
| 1297 | /** |
| 1298 | * xmlFreeAttributeTable: |
| 1299 | * @table: An attribute table |
| 1300 | * |
| 1301 | * Deallocate the memory used by an entities hash table. |
| 1302 | */ |
| 1303 | void |
| 1304 | xmlFreeAttributeTable(xmlAttributeTablePtr table) { |
| 1305 | xmlHashFree(table, (xmlHashDeallocator) xmlFreeAttribute); |
| 1306 | } |
| 1307 | |
| 1308 | /** |
| 1309 | * xmlCopyAttribute: |
| 1310 | * @attr: An attribute |
| 1311 | * |
| 1312 | * Build a copy of an attribute. |
| 1313 | * |
| 1314 | * Returns the new xmlAttributePtr or NULL in case of error. |
| 1315 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1316 | static xmlAttributePtr |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1317 | xmlCopyAttribute(xmlAttributePtr attr) { |
| 1318 | xmlAttributePtr cur; |
| 1319 | |
| 1320 | cur = (xmlAttributePtr) xmlMalloc(sizeof(xmlAttribute)); |
| 1321 | if (cur == NULL) { |
| 1322 | xmlGenericError(xmlGenericErrorContext, |
| 1323 | "xmlCopyAttribute: out of memory !\n"); |
| 1324 | return(NULL); |
| 1325 | } |
| 1326 | memset(cur, 0, sizeof(xmlAttribute)); |
| 1327 | cur->atype = attr->atype; |
| 1328 | cur->def = attr->def; |
| 1329 | cur->tree = xmlCopyEnumeration(attr->tree); |
| 1330 | if (attr->elem != NULL) |
| 1331 | cur->elem = xmlStrdup(attr->elem); |
| 1332 | if (attr->name != NULL) |
| 1333 | cur->name = xmlStrdup(attr->name); |
| 1334 | if (attr->defaultValue != NULL) |
| 1335 | cur->defaultValue = xmlStrdup(attr->defaultValue); |
| 1336 | return(cur); |
| 1337 | } |
| 1338 | |
| 1339 | /** |
| 1340 | * xmlCopyAttributeTable: |
| 1341 | * @table: An attribute table |
| 1342 | * |
| 1343 | * Build a copy of an attribute table. |
| 1344 | * |
| 1345 | * Returns the new xmlAttributeTablePtr or NULL in case of error. |
| 1346 | */ |
| 1347 | xmlAttributeTablePtr |
| 1348 | xmlCopyAttributeTable(xmlAttributeTablePtr table) { |
| 1349 | return((xmlAttributeTablePtr) xmlHashCopy(table, |
| 1350 | (xmlHashCopier) xmlCopyAttribute)); |
| 1351 | } |
| 1352 | |
| 1353 | /** |
| 1354 | * xmlDumpAttributeDecl: |
| 1355 | * @buf: the XML buffer output |
| 1356 | * @attr: An attribute declaration |
| 1357 | * |
| 1358 | * This will dump the content of the attribute declaration as an XML |
| 1359 | * DTD definition |
| 1360 | */ |
| 1361 | void |
| 1362 | xmlDumpAttributeDecl(xmlBufferPtr buf, xmlAttributePtr attr) { |
| 1363 | xmlBufferWriteChar(buf, "<!ATTLIST "); |
| 1364 | xmlBufferWriteCHAR(buf, attr->elem); |
| 1365 | xmlBufferWriteChar(buf, " "); |
| 1366 | if (attr->prefix != NULL) { |
| 1367 | xmlBufferWriteCHAR(buf, attr->prefix); |
| 1368 | xmlBufferWriteChar(buf, ":"); |
| 1369 | } |
| 1370 | xmlBufferWriteCHAR(buf, attr->name); |
| 1371 | switch (attr->atype) { |
| 1372 | case XML_ATTRIBUTE_CDATA: |
| 1373 | xmlBufferWriteChar(buf, " CDATA"); |
| 1374 | break; |
| 1375 | case XML_ATTRIBUTE_ID: |
| 1376 | xmlBufferWriteChar(buf, " ID"); |
| 1377 | break; |
| 1378 | case XML_ATTRIBUTE_IDREF: |
| 1379 | xmlBufferWriteChar(buf, " IDREF"); |
| 1380 | break; |
| 1381 | case XML_ATTRIBUTE_IDREFS: |
| 1382 | xmlBufferWriteChar(buf, " IDREFS"); |
| 1383 | break; |
| 1384 | case XML_ATTRIBUTE_ENTITY: |
| 1385 | xmlBufferWriteChar(buf, " ENTITY"); |
| 1386 | break; |
| 1387 | case XML_ATTRIBUTE_ENTITIES: |
| 1388 | xmlBufferWriteChar(buf, " ENTITIES"); |
| 1389 | break; |
| 1390 | case XML_ATTRIBUTE_NMTOKEN: |
| 1391 | xmlBufferWriteChar(buf, " NMTOKEN"); |
| 1392 | break; |
| 1393 | case XML_ATTRIBUTE_NMTOKENS: |
| 1394 | xmlBufferWriteChar(buf, " NMTOKENS"); |
| 1395 | break; |
| 1396 | case XML_ATTRIBUTE_ENUMERATION: |
| 1397 | xmlBufferWriteChar(buf, " ("); |
| 1398 | xmlDumpEnumeration(buf, attr->tree); |
| 1399 | break; |
| 1400 | case XML_ATTRIBUTE_NOTATION: |
| 1401 | xmlBufferWriteChar(buf, " NOTATION ("); |
| 1402 | xmlDumpEnumeration(buf, attr->tree); |
| 1403 | break; |
| 1404 | default: |
| 1405 | xmlGenericError(xmlGenericErrorContext, |
| 1406 | "xmlDumpAttributeTable: internal: unknown type %d\n", |
| 1407 | attr->atype); |
| 1408 | } |
| 1409 | switch (attr->def) { |
| 1410 | case XML_ATTRIBUTE_NONE: |
| 1411 | break; |
| 1412 | case XML_ATTRIBUTE_REQUIRED: |
| 1413 | xmlBufferWriteChar(buf, " #REQUIRED"); |
| 1414 | break; |
| 1415 | case XML_ATTRIBUTE_IMPLIED: |
| 1416 | xmlBufferWriteChar(buf, " #IMPLIED"); |
| 1417 | break; |
| 1418 | case XML_ATTRIBUTE_FIXED: |
| 1419 | xmlBufferWriteChar(buf, " #FIXED"); |
| 1420 | break; |
| 1421 | default: |
| 1422 | xmlGenericError(xmlGenericErrorContext, |
| 1423 | "xmlDumpAttributeTable: internal: unknown default %d\n", |
| 1424 | attr->def); |
| 1425 | } |
| 1426 | if (attr->defaultValue != NULL) { |
| 1427 | xmlBufferWriteChar(buf, " "); |
| 1428 | xmlBufferWriteQuotedString(buf, attr->defaultValue); |
| 1429 | } |
| 1430 | xmlBufferWriteChar(buf, ">\n"); |
| 1431 | } |
| 1432 | |
| 1433 | /** |
| 1434 | * xmlDumpAttributeTable: |
| 1435 | * @buf: the XML buffer output |
| 1436 | * @table: An attribute table |
| 1437 | * |
| 1438 | * This will dump the content of the attribute table as an XML DTD definition |
| 1439 | */ |
| 1440 | void |
| 1441 | xmlDumpAttributeTable(xmlBufferPtr buf, xmlAttributeTablePtr table) { |
| 1442 | xmlHashScan(table, (xmlHashScanner) xmlDumpAttributeDecl, buf); |
| 1443 | } |
| 1444 | |
| 1445 | /************************************************************************ |
| 1446 | * * |
| 1447 | * NOTATIONs * |
| 1448 | * * |
| 1449 | ************************************************************************/ |
| 1450 | /** |
| 1451 | * xmlCreateNotationTable: |
| 1452 | * |
| 1453 | * create and initialize an empty notation hash table. |
| 1454 | * |
| 1455 | * Returns the xmlNotationTablePtr just created or NULL in case |
| 1456 | * of error. |
| 1457 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1458 | static xmlNotationTablePtr |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1459 | xmlCreateNotationTable(void) { |
| 1460 | return(xmlHashCreate(0)); |
| 1461 | } |
| 1462 | |
| 1463 | /** |
| 1464 | * xmlFreeNotation: |
| 1465 | * @not: A notation |
| 1466 | * |
| 1467 | * Deallocate the memory used by an notation definition |
| 1468 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1469 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1470 | xmlFreeNotation(xmlNotationPtr nota) { |
| 1471 | if (nota == NULL) return; |
| 1472 | if (nota->name != NULL) |
| 1473 | xmlFree((xmlChar *) nota->name); |
| 1474 | if (nota->PublicID != NULL) |
| 1475 | xmlFree((xmlChar *) nota->PublicID); |
| 1476 | if (nota->SystemID != NULL) |
| 1477 | xmlFree((xmlChar *) nota->SystemID); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1478 | xmlFree(nota); |
| 1479 | } |
| 1480 | |
| 1481 | |
| 1482 | /** |
| 1483 | * xmlAddNotationDecl: |
| 1484 | * @dtd: pointer to the DTD |
| 1485 | * @ctxt: the validation context |
| 1486 | * @name: the entity name |
| 1487 | * @PublicID: the public identifier or NULL |
| 1488 | * @SystemID: the system identifier or NULL |
| 1489 | * |
| 1490 | * Register a new notation declaration |
| 1491 | * |
| 1492 | * Returns NULL if not, othervise the entity |
| 1493 | */ |
| 1494 | xmlNotationPtr |
Daniel Veillard | c86a4fa | 2001-03-26 16:28:29 +0000 | [diff] [blame] | 1495 | xmlAddNotationDecl(xmlValidCtxtPtr ctxt ATTRIBUTE_UNUSED, xmlDtdPtr dtd, |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1496 | const xmlChar *name, |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1497 | const xmlChar *PublicID, const xmlChar *SystemID) { |
| 1498 | xmlNotationPtr ret; |
| 1499 | xmlNotationTablePtr table; |
| 1500 | |
| 1501 | if (dtd == NULL) { |
| 1502 | xmlGenericError(xmlGenericErrorContext, |
| 1503 | "xmlAddNotationDecl: dtd == NULL\n"); |
| 1504 | return(NULL); |
| 1505 | } |
| 1506 | if (name == NULL) { |
| 1507 | xmlGenericError(xmlGenericErrorContext, |
| 1508 | "xmlAddNotationDecl: name == NULL\n"); |
| 1509 | return(NULL); |
| 1510 | } |
| 1511 | if ((PublicID == NULL) && (SystemID == NULL)) { |
| 1512 | xmlGenericError(xmlGenericErrorContext, |
| 1513 | "xmlAddNotationDecl: no PUBLIC ID nor SYSTEM ID\n"); |
| 1514 | } |
| 1515 | |
| 1516 | /* |
| 1517 | * Create the Notation table if needed. |
| 1518 | */ |
| 1519 | table = (xmlNotationTablePtr) dtd->notations; |
| 1520 | if (table == NULL) |
| 1521 | dtd->notations = table = xmlCreateNotationTable(); |
| 1522 | if (table == NULL) { |
| 1523 | xmlGenericError(xmlGenericErrorContext, |
| 1524 | "xmlAddNotationDecl: Table creation failed!\n"); |
| 1525 | return(NULL); |
| 1526 | } |
| 1527 | |
| 1528 | ret = (xmlNotationPtr) xmlMalloc(sizeof(xmlNotation)); |
| 1529 | if (ret == NULL) { |
| 1530 | xmlGenericError(xmlGenericErrorContext, |
| 1531 | "xmlAddNotationDecl: out of memory\n"); |
| 1532 | return(NULL); |
| 1533 | } |
| 1534 | memset(ret, 0, sizeof(xmlNotation)); |
| 1535 | |
| 1536 | /* |
| 1537 | * fill the structure. |
| 1538 | */ |
| 1539 | ret->name = xmlStrdup(name); |
| 1540 | if (SystemID != NULL) |
| 1541 | ret->SystemID = xmlStrdup(SystemID); |
| 1542 | if (PublicID != NULL) |
| 1543 | ret->PublicID = xmlStrdup(PublicID); |
| 1544 | |
| 1545 | /* |
| 1546 | * Validity Check: |
| 1547 | * Check the DTD for previous declarations of the ATTLIST |
| 1548 | */ |
| 1549 | if (xmlHashAddEntry(table, name, ret)) { |
| 1550 | xmlGenericError(xmlGenericErrorContext, |
| 1551 | "xmlAddNotationDecl: %s already defined\n", name); |
| 1552 | xmlFreeNotation(ret); |
| 1553 | return(NULL); |
| 1554 | } |
| 1555 | return(ret); |
| 1556 | } |
| 1557 | |
| 1558 | /** |
| 1559 | * xmlFreeNotationTable: |
| 1560 | * @table: An notation table |
| 1561 | * |
| 1562 | * Deallocate the memory used by an entities hash table. |
| 1563 | */ |
| 1564 | void |
| 1565 | xmlFreeNotationTable(xmlNotationTablePtr table) { |
| 1566 | xmlHashFree(table, (xmlHashDeallocator) xmlFreeNotation); |
| 1567 | } |
| 1568 | |
| 1569 | /** |
| 1570 | * xmlCopyNotation: |
| 1571 | * @nota: A notation |
| 1572 | * |
| 1573 | * Build a copy of a notation. |
| 1574 | * |
| 1575 | * Returns the new xmlNotationPtr or NULL in case of error. |
| 1576 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1577 | static xmlNotationPtr |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1578 | xmlCopyNotation(xmlNotationPtr nota) { |
| 1579 | xmlNotationPtr cur; |
| 1580 | |
| 1581 | cur = (xmlNotationPtr) xmlMalloc(sizeof(xmlNotation)); |
| 1582 | if (cur == NULL) { |
| 1583 | xmlGenericError(xmlGenericErrorContext, |
| 1584 | "xmlCopyNotation: out of memory !\n"); |
| 1585 | return(NULL); |
| 1586 | } |
| 1587 | if (nota->name != NULL) |
| 1588 | cur->name = xmlStrdup(nota->name); |
| 1589 | else |
| 1590 | cur->name = NULL; |
| 1591 | if (nota->PublicID != NULL) |
| 1592 | cur->PublicID = xmlStrdup(nota->PublicID); |
| 1593 | else |
| 1594 | cur->PublicID = NULL; |
| 1595 | if (nota->SystemID != NULL) |
| 1596 | cur->SystemID = xmlStrdup(nota->SystemID); |
| 1597 | else |
| 1598 | cur->SystemID = NULL; |
| 1599 | return(cur); |
| 1600 | } |
| 1601 | |
| 1602 | /** |
| 1603 | * xmlCopyNotationTable: |
| 1604 | * @table: A notation table |
| 1605 | * |
| 1606 | * Build a copy of a notation table. |
| 1607 | * |
| 1608 | * Returns the new xmlNotationTablePtr or NULL in case of error. |
| 1609 | */ |
| 1610 | xmlNotationTablePtr |
| 1611 | xmlCopyNotationTable(xmlNotationTablePtr table) { |
| 1612 | return((xmlNotationTablePtr) xmlHashCopy(table, |
| 1613 | (xmlHashCopier) xmlCopyNotation)); |
| 1614 | } |
| 1615 | |
| 1616 | /** |
| 1617 | * xmlDumpNotationDecl: |
| 1618 | * @buf: the XML buffer output |
| 1619 | * @nota: A notation declaration |
| 1620 | * |
| 1621 | * This will dump the content the notation declaration as an XML DTD definition |
| 1622 | */ |
| 1623 | void |
| 1624 | xmlDumpNotationDecl(xmlBufferPtr buf, xmlNotationPtr nota) { |
| 1625 | xmlBufferWriteChar(buf, "<!NOTATION "); |
| 1626 | xmlBufferWriteCHAR(buf, nota->name); |
| 1627 | if (nota->PublicID != NULL) { |
| 1628 | xmlBufferWriteChar(buf, " PUBLIC "); |
| 1629 | xmlBufferWriteQuotedString(buf, nota->PublicID); |
| 1630 | if (nota->SystemID != NULL) { |
| 1631 | xmlBufferWriteChar(buf, " "); |
| 1632 | xmlBufferWriteCHAR(buf, nota->SystemID); |
| 1633 | } |
| 1634 | } else { |
| 1635 | xmlBufferWriteChar(buf, " SYSTEM "); |
| 1636 | xmlBufferWriteCHAR(buf, nota->SystemID); |
| 1637 | } |
| 1638 | xmlBufferWriteChar(buf, " >\n"); |
| 1639 | } |
| 1640 | |
| 1641 | /** |
| 1642 | * xmlDumpNotationTable: |
| 1643 | * @buf: the XML buffer output |
| 1644 | * @table: A notation table |
| 1645 | * |
| 1646 | * This will dump the content of the notation table as an XML DTD definition |
| 1647 | */ |
| 1648 | void |
| 1649 | xmlDumpNotationTable(xmlBufferPtr buf, xmlNotationTablePtr table) { |
| 1650 | xmlHashScan(table, (xmlHashScanner) xmlDumpNotationDecl, buf); |
| 1651 | } |
| 1652 | |
| 1653 | /************************************************************************ |
| 1654 | * * |
| 1655 | * IDs * |
| 1656 | * * |
| 1657 | ************************************************************************/ |
| 1658 | /** |
| 1659 | * xmlCreateIDTable: |
| 1660 | * |
| 1661 | * create and initialize an empty id hash table. |
| 1662 | * |
| 1663 | * Returns the xmlIDTablePtr just created or NULL in case |
| 1664 | * of error. |
| 1665 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1666 | static xmlIDTablePtr |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1667 | xmlCreateIDTable(void) { |
| 1668 | return(xmlHashCreate(0)); |
| 1669 | } |
| 1670 | |
| 1671 | /** |
| 1672 | * xmlFreeID: |
| 1673 | * @not: A id |
| 1674 | * |
| 1675 | * Deallocate the memory used by an id definition |
| 1676 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1677 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1678 | xmlFreeID(xmlIDPtr id) { |
| 1679 | if (id == NULL) return; |
| 1680 | if (id->value != NULL) |
| 1681 | xmlFree((xmlChar *) id->value); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1682 | xmlFree(id); |
| 1683 | } |
| 1684 | |
| 1685 | /** |
| 1686 | * xmlAddID: |
| 1687 | * @ctxt: the validation context |
| 1688 | * @doc: pointer to the document |
| 1689 | * @value: the value name |
| 1690 | * @attr: the attribute holding the ID |
| 1691 | * |
| 1692 | * Register a new id declaration |
| 1693 | * |
| 1694 | * Returns NULL if not, othervise the new xmlIDPtr |
| 1695 | */ |
| 1696 | xmlIDPtr |
| 1697 | xmlAddID(xmlValidCtxtPtr ctxt, xmlDocPtr doc, const xmlChar *value, |
| 1698 | xmlAttrPtr attr) { |
| 1699 | xmlIDPtr ret; |
| 1700 | xmlIDTablePtr table; |
| 1701 | |
| 1702 | if (doc == NULL) { |
| 1703 | xmlGenericError(xmlGenericErrorContext, |
| 1704 | "xmlAddIDDecl: doc == NULL\n"); |
| 1705 | return(NULL); |
| 1706 | } |
| 1707 | if (value == NULL) { |
| 1708 | xmlGenericError(xmlGenericErrorContext, |
| 1709 | "xmlAddIDDecl: value == NULL\n"); |
| 1710 | return(NULL); |
| 1711 | } |
| 1712 | if (attr == NULL) { |
| 1713 | xmlGenericError(xmlGenericErrorContext, |
| 1714 | "xmlAddIDDecl: attr == NULL\n"); |
| 1715 | return(NULL); |
| 1716 | } |
| 1717 | |
| 1718 | /* |
| 1719 | * Create the ID table if needed. |
| 1720 | */ |
| 1721 | table = (xmlIDTablePtr) doc->ids; |
| 1722 | if (table == NULL) |
| 1723 | doc->ids = table = xmlCreateIDTable(); |
| 1724 | if (table == NULL) { |
| 1725 | xmlGenericError(xmlGenericErrorContext, |
| 1726 | "xmlAddID: Table creation failed!\n"); |
| 1727 | return(NULL); |
| 1728 | } |
| 1729 | |
| 1730 | ret = (xmlIDPtr) xmlMalloc(sizeof(xmlID)); |
| 1731 | if (ret == NULL) { |
| 1732 | xmlGenericError(xmlGenericErrorContext, |
| 1733 | "xmlAddID: out of memory\n"); |
| 1734 | return(NULL); |
| 1735 | } |
| 1736 | |
| 1737 | /* |
| 1738 | * fill the structure. |
| 1739 | */ |
| 1740 | ret->value = xmlStrdup(value); |
| 1741 | ret->attr = attr; |
| 1742 | |
| 1743 | if (xmlHashAddEntry(table, value, ret) < 0) { |
| 1744 | /* |
| 1745 | * The id is already defined in this Dtd. |
| 1746 | */ |
| 1747 | VERROR(ctxt->userData, "ID %s already defined\n", value); |
| 1748 | xmlFreeID(ret); |
| 1749 | return(NULL); |
| 1750 | } |
| 1751 | return(ret); |
| 1752 | } |
| 1753 | |
| 1754 | /** |
| 1755 | * xmlFreeIDTable: |
| 1756 | * @table: An id table |
| 1757 | * |
| 1758 | * Deallocate the memory used by an ID hash table. |
| 1759 | */ |
| 1760 | void |
| 1761 | xmlFreeIDTable(xmlIDTablePtr table) { |
| 1762 | xmlHashFree(table, (xmlHashDeallocator) xmlFreeID); |
| 1763 | } |
| 1764 | |
| 1765 | /** |
| 1766 | * xmlIsID: |
| 1767 | * @doc: the document |
| 1768 | * @elem: the element carrying the attribute |
| 1769 | * @attr: the attribute |
| 1770 | * |
| 1771 | * Determine whether an attribute is of type ID. In case we have Dtd(s) |
| 1772 | * then this is simple, otherwise we use an heuristic: name ID (upper |
| 1773 | * or lowercase). |
| 1774 | * |
| 1775 | * Returns 0 or 1 depending on the lookup result |
| 1776 | */ |
| 1777 | int |
| 1778 | xmlIsID(xmlDocPtr doc, xmlNodePtr elem, xmlAttrPtr attr) { |
| 1779 | if (doc == NULL) return(0); |
| 1780 | if (attr == NULL) return(0); |
| 1781 | if ((doc->intSubset == NULL) && (doc->extSubset == NULL)) { |
| 1782 | return(0); |
| 1783 | } else if (doc->type == XML_HTML_DOCUMENT_NODE) { |
| 1784 | if ((xmlStrEqual(BAD_CAST "id", attr->name)) || |
| 1785 | (xmlStrEqual(BAD_CAST "name", attr->name))) |
| 1786 | return(1); |
| 1787 | return(0); |
| 1788 | } else { |
| 1789 | xmlAttributePtr attrDecl; |
| 1790 | |
| 1791 | if (elem == NULL) return(0); |
| 1792 | attrDecl = xmlGetDtdAttrDesc(doc->intSubset, elem->name, attr->name); |
| 1793 | if ((attrDecl == NULL) && (doc->extSubset != NULL)) |
| 1794 | attrDecl = xmlGetDtdAttrDesc(doc->extSubset, elem->name, |
| 1795 | attr->name); |
| 1796 | |
| 1797 | if ((attrDecl != NULL) && (attrDecl->atype == XML_ATTRIBUTE_ID)) |
| 1798 | return(1); |
| 1799 | } |
| 1800 | return(0); |
| 1801 | } |
| 1802 | |
| 1803 | /** |
| 1804 | * xmlRemoveID |
| 1805 | * @doc: the document |
| 1806 | * @attr: the attribute |
| 1807 | * |
| 1808 | * Remove the given attribute from the ID table maintained internally. |
| 1809 | * |
| 1810 | * Returns -1 if the lookup failed and 0 otherwise |
| 1811 | */ |
| 1812 | int |
| 1813 | xmlRemoveID(xmlDocPtr doc, xmlAttrPtr attr) { |
| 1814 | xmlAttrPtr cur; |
| 1815 | xmlIDTablePtr table; |
| 1816 | xmlChar *ID; |
| 1817 | |
| 1818 | if (doc == NULL) return(-1); |
| 1819 | if (attr == NULL) return(-1); |
| 1820 | table = (xmlIDTablePtr) doc->ids; |
| 1821 | if (table == NULL) |
| 1822 | return(-1); |
| 1823 | |
| 1824 | if (attr == NULL) |
| 1825 | return(-1); |
| 1826 | ID = xmlNodeListGetString(doc, attr->children, 1); |
| 1827 | if (ID == NULL) |
| 1828 | return(-1); |
| 1829 | cur = xmlHashLookup(table, ID); |
| 1830 | if (cur != attr) { |
| 1831 | xmlFree(ID); |
| 1832 | return(-1); |
| 1833 | } |
| 1834 | xmlHashUpdateEntry(table, ID, NULL, (xmlHashDeallocator) xmlFreeID); |
| 1835 | xmlFree(ID); |
| 1836 | return(0); |
| 1837 | } |
| 1838 | |
| 1839 | /** |
| 1840 | * xmlGetID: |
| 1841 | * @doc: pointer to the document |
| 1842 | * @ID: the ID value |
| 1843 | * |
| 1844 | * Search the attribute declaring the given ID |
| 1845 | * |
| 1846 | * Returns NULL if not found, otherwise the xmlAttrPtr defining the ID |
| 1847 | */ |
| 1848 | xmlAttrPtr |
| 1849 | xmlGetID(xmlDocPtr doc, const xmlChar *ID) { |
| 1850 | xmlIDTablePtr table; |
| 1851 | xmlIDPtr id; |
| 1852 | |
| 1853 | if (doc == NULL) { |
| 1854 | xmlGenericError(xmlGenericErrorContext, "xmlGetID: doc == NULL\n"); |
| 1855 | return(NULL); |
| 1856 | } |
| 1857 | |
| 1858 | if (ID == NULL) { |
| 1859 | xmlGenericError(xmlGenericErrorContext, "xmlGetID: ID == NULL\n"); |
| 1860 | return(NULL); |
| 1861 | } |
| 1862 | |
| 1863 | table = (xmlIDTablePtr) doc->ids; |
| 1864 | if (table == NULL) |
| 1865 | return(NULL); |
| 1866 | |
| 1867 | id = xmlHashLookup(table, ID); |
| 1868 | if (id == NULL) |
| 1869 | return(NULL); |
| 1870 | return(id->attr); |
| 1871 | } |
| 1872 | |
| 1873 | /************************************************************************ |
| 1874 | * * |
| 1875 | * Refs * |
| 1876 | * * |
| 1877 | ************************************************************************/ |
Daniel Veillard | 8730c56 | 2001-02-26 10:49:57 +0000 | [diff] [blame] | 1878 | typedef struct xmlRemoveMemo_t |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1879 | { |
| 1880 | xmlListPtr l; |
| 1881 | xmlAttrPtr ap; |
Daniel Veillard | 8730c56 | 2001-02-26 10:49:57 +0000 | [diff] [blame] | 1882 | } xmlRemoveMemo; |
| 1883 | |
| 1884 | typedef xmlRemoveMemo *xmlRemoveMemoPtr; |
| 1885 | |
| 1886 | typedef struct xmlValidateMemo_t |
| 1887 | { |
| 1888 | xmlValidCtxtPtr ctxt; |
| 1889 | const xmlChar *name; |
| 1890 | } xmlValidateMemo; |
| 1891 | |
| 1892 | typedef xmlValidateMemo *xmlValidateMemoPtr; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1893 | |
| 1894 | /** |
| 1895 | * xmlCreateRefTable: |
| 1896 | * |
| 1897 | * create and initialize an empty ref hash table. |
| 1898 | * |
| 1899 | * Returns the xmlRefTablePtr just created or NULL in case |
| 1900 | * of error. |
| 1901 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1902 | static xmlRefTablePtr |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1903 | xmlCreateRefTable(void) { |
| 1904 | return(xmlHashCreate(0)); |
| 1905 | } |
| 1906 | |
| 1907 | /** |
| 1908 | * xmlFreeRef: |
| 1909 | * @lk: A list link |
| 1910 | * |
| 1911 | * Deallocate the memory used by a ref definition |
| 1912 | */ |
| 1913 | static void |
| 1914 | xmlFreeRef(xmlLinkPtr lk) { |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 1915 | xmlRefPtr ref = (xmlRefPtr)xmlLinkGetData(lk); |
| 1916 | if (ref == NULL) return; |
| 1917 | if (ref->value != NULL) |
| 1918 | xmlFree((xmlChar *)ref->value); |
| 1919 | xmlFree(ref); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1920 | } |
| 1921 | |
| 1922 | /** |
| 1923 | * xmlFreeRefList: |
| 1924 | * @list_ref: A list of references. |
| 1925 | * |
| 1926 | * Deallocate the memory used by a list of references |
| 1927 | */ |
| 1928 | static void |
| 1929 | xmlFreeRefList(xmlListPtr list_ref) { |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 1930 | if (list_ref == NULL) return; |
| 1931 | xmlListDelete(list_ref); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1932 | } |
| 1933 | |
| 1934 | /** |
| 1935 | * xmlWalkRemoveRef: |
| 1936 | * @data: Contents of current link |
| 1937 | * @user: Value supplied by the user |
| 1938 | * |
| 1939 | * Return 0 to abort the walk or 1 to continue |
| 1940 | */ |
| 1941 | static int |
| 1942 | xmlWalkRemoveRef(const void *data, const void *user) |
| 1943 | { |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 1944 | xmlAttrPtr attr0 = ((xmlRefPtr)data)->attr; |
| 1945 | xmlAttrPtr attr1 = ((xmlRemoveMemoPtr)user)->ap; |
| 1946 | xmlListPtr ref_list = ((xmlRemoveMemoPtr)user)->l; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1947 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 1948 | if (attr0 == attr1) { /* Matched: remove and terminate walk */ |
| 1949 | xmlListRemoveFirst(ref_list, (void *)data); |
| 1950 | return 0; |
| 1951 | } |
| 1952 | return 1; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1953 | } |
| 1954 | |
| 1955 | /** |
| 1956 | * xmlAddRef: |
| 1957 | * @ctxt: the validation context |
| 1958 | * @doc: pointer to the document |
| 1959 | * @value: the value name |
| 1960 | * @attr: the attribute holding the Ref |
| 1961 | * |
| 1962 | * Register a new ref declaration |
| 1963 | * |
| 1964 | * Returns NULL if not, othervise the new xmlRefPtr |
| 1965 | */ |
| 1966 | xmlRefPtr |
Daniel Veillard | c86a4fa | 2001-03-26 16:28:29 +0000 | [diff] [blame] | 1967 | xmlAddRef(xmlValidCtxtPtr ctxt ATTRIBUTE_UNUSED, xmlDocPtr doc, const xmlChar *value, |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1968 | xmlAttrPtr attr) { |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 1969 | xmlRefPtr ret; |
| 1970 | xmlRefTablePtr table; |
| 1971 | xmlListPtr ref_list; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1972 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 1973 | if (doc == NULL) { |
| 1974 | xmlGenericError(xmlGenericErrorContext, |
| 1975 | "xmlAddRefDecl: doc == NULL\n"); |
| 1976 | return(NULL); |
| 1977 | } |
| 1978 | if (value == NULL) { |
| 1979 | xmlGenericError(xmlGenericErrorContext, |
| 1980 | "xmlAddRefDecl: value == NULL\n"); |
| 1981 | return(NULL); |
| 1982 | } |
| 1983 | if (attr == NULL) { |
| 1984 | xmlGenericError(xmlGenericErrorContext, |
| 1985 | "xmlAddRefDecl: attr == NULL\n"); |
| 1986 | return(NULL); |
| 1987 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1988 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 1989 | /* |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1990 | * Create the Ref table if needed. |
| 1991 | */ |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 1992 | table = (xmlRefTablePtr) doc->refs; |
| 1993 | if (table == NULL) |
| 1994 | doc->refs = table = xmlCreateRefTable(); |
| 1995 | if (table == NULL) { |
| 1996 | xmlGenericError(xmlGenericErrorContext, |
| 1997 | "xmlAddRef: Table creation failed!\n"); |
| 1998 | return(NULL); |
| 1999 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2000 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2001 | ret = (xmlRefPtr) xmlMalloc(sizeof(xmlRef)); |
| 2002 | if (ret == NULL) { |
| 2003 | xmlGenericError(xmlGenericErrorContext, |
| 2004 | "xmlAddRef: out of memory\n"); |
| 2005 | return(NULL); |
| 2006 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2007 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2008 | /* |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2009 | * fill the structure. |
| 2010 | */ |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2011 | ret->value = xmlStrdup(value); |
| 2012 | ret->attr = attr; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2013 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2014 | /* To add a reference :- |
| 2015 | * References are maintained as a list of references, |
| 2016 | * Lookup the entry, if no entry create new nodelist |
| 2017 | * Add the owning node to the NodeList |
| 2018 | * Return the ref |
| 2019 | */ |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2020 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2021 | if (NULL == (ref_list = xmlHashLookup(table, value))) { |
| 2022 | if (NULL == (ref_list = xmlListCreate(xmlFreeRef, NULL))) { |
| 2023 | xmlGenericError(xmlGenericErrorContext, |
| 2024 | "xmlAddRef: Reference list creation failed!\n"); |
| 2025 | return(NULL); |
| 2026 | } |
| 2027 | if (xmlHashAddEntry(table, value, ref_list) < 0) { |
| 2028 | xmlListDelete(ref_list); |
| 2029 | xmlGenericError(xmlGenericErrorContext, |
| 2030 | "xmlAddRef: Reference list insertion failed!\n"); |
| 2031 | return(NULL); |
| 2032 | } |
| 2033 | } |
| 2034 | xmlListInsert(ref_list, ret); |
| 2035 | return(ret); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2036 | } |
| 2037 | |
| 2038 | /** |
| 2039 | * xmlFreeRefTable: |
| 2040 | * @table: An ref table |
| 2041 | * |
| 2042 | * Deallocate the memory used by an Ref hash table. |
| 2043 | */ |
| 2044 | void |
| 2045 | xmlFreeRefTable(xmlRefTablePtr table) { |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2046 | xmlHashFree(table, (xmlHashDeallocator) xmlFreeRefList); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2047 | } |
| 2048 | |
| 2049 | /** |
| 2050 | * xmlIsRef: |
| 2051 | * @doc: the document |
| 2052 | * @elem: the element carrying the attribute |
| 2053 | * @attr: the attribute |
| 2054 | * |
| 2055 | * Determine whether an attribute is of type Ref. In case we have Dtd(s) |
| 2056 | * then this is simple, otherwise we use an heuristic: name Ref (upper |
| 2057 | * or lowercase). |
| 2058 | * |
| 2059 | * Returns 0 or 1 depending on the lookup result |
| 2060 | */ |
| 2061 | int |
| 2062 | xmlIsRef(xmlDocPtr doc, xmlNodePtr elem, xmlAttrPtr attr) { |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2063 | if ((doc->intSubset == NULL) && (doc->extSubset == NULL)) { |
| 2064 | return(0); |
| 2065 | } else if (doc->type == XML_HTML_DOCUMENT_NODE) { |
| 2066 | /* TODO @@@ */ |
| 2067 | return(0); |
| 2068 | } else { |
| 2069 | xmlAttributePtr attrDecl; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2070 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2071 | attrDecl = xmlGetDtdAttrDesc(doc->intSubset, elem->name, attr->name); |
| 2072 | if ((attrDecl == NULL) && (doc->extSubset != NULL)) |
| 2073 | attrDecl = xmlGetDtdAttrDesc(doc->extSubset, |
| 2074 | elem->name, attr->name); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2075 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2076 | if ((attrDecl != NULL) && |
| 2077 | (attrDecl->atype == XML_ATTRIBUTE_IDREF || |
| 2078 | attrDecl->atype == XML_ATTRIBUTE_IDREFS)) |
| 2079 | return(1); |
| 2080 | } |
| 2081 | return(0); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2082 | } |
| 2083 | |
| 2084 | /** |
| 2085 | * xmlRemoveRef |
| 2086 | * @doc: the document |
| 2087 | * @attr: the attribute |
| 2088 | * |
| 2089 | * Remove the given attribute from the Ref table maintained internally. |
| 2090 | * |
| 2091 | * Returns -1 if the lookup failed and 0 otherwise |
| 2092 | */ |
| 2093 | int |
| 2094 | xmlRemoveRef(xmlDocPtr doc, xmlAttrPtr attr) { |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2095 | xmlListPtr ref_list; |
| 2096 | xmlRefTablePtr table; |
| 2097 | xmlChar *ID; |
| 2098 | xmlRemoveMemo target; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2099 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2100 | if (doc == NULL) return(-1); |
| 2101 | if (attr == NULL) return(-1); |
| 2102 | table = (xmlRefTablePtr) doc->refs; |
| 2103 | if (table == NULL) |
| 2104 | return(-1); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2105 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2106 | if (attr == NULL) |
| 2107 | return(-1); |
| 2108 | ID = xmlNodeListGetString(doc, attr->children, 1); |
| 2109 | if (ID == NULL) |
| 2110 | return(-1); |
| 2111 | ref_list = xmlHashLookup(table, ID); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2112 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2113 | if(ref_list == NULL) { |
| 2114 | xmlFree(ID); |
| 2115 | return (-1); |
| 2116 | } |
| 2117 | /* At this point, ref_list refers to a list of references which |
| 2118 | * have the same key as the supplied attr. Our list of references |
| 2119 | * is ordered by reference address and we don't have that information |
| 2120 | * here to use when removing. We'll have to walk the list and |
| 2121 | * check for a matching attribute, when we find one stop the walk |
| 2122 | * and remove the entry. |
| 2123 | * The list is ordered by reference, so that means we don't have the |
| 2124 | * key. Passing the list and the reference to the walker means we |
| 2125 | * will have enough data to be able to remove the entry. |
| 2126 | */ |
| 2127 | target.l = ref_list; |
| 2128 | target.ap = attr; |
| 2129 | |
| 2130 | /* Remove the supplied attr from our list */ |
| 2131 | xmlListWalk(ref_list, xmlWalkRemoveRef, &target); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2132 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2133 | /*If the list is empty then remove the list entry in the hash */ |
| 2134 | if (xmlListEmpty(ref_list)) |
| 2135 | xmlHashUpdateEntry(table, ID, NULL, (xmlHashDeallocator) |
| 2136 | xmlFreeRefList); |
| 2137 | xmlFree(ID); |
| 2138 | return(0); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2139 | } |
| 2140 | |
| 2141 | /** |
| 2142 | * xmlGetRefs: |
| 2143 | * @doc: pointer to the document |
| 2144 | * @ID: the ID value |
| 2145 | * |
| 2146 | * Find the set of references for the supplied ID. |
| 2147 | * |
| 2148 | * Returns NULL if not found, otherwise node set for the ID. |
| 2149 | */ |
| 2150 | xmlListPtr |
| 2151 | xmlGetRefs(xmlDocPtr doc, const xmlChar *ID) { |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2152 | xmlRefTablePtr table; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2153 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2154 | if (doc == NULL) { |
| 2155 | xmlGenericError(xmlGenericErrorContext, "xmlGetRef: doc == NULL\n"); |
| 2156 | return(NULL); |
| 2157 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2158 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2159 | if (ID == NULL) { |
| 2160 | xmlGenericError(xmlGenericErrorContext, "xmlGetRef: ID == NULL\n"); |
| 2161 | return(NULL); |
| 2162 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2163 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2164 | table = (xmlRefTablePtr) doc->refs; |
| 2165 | if (table == NULL) |
| 2166 | return(NULL); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2167 | |
Daniel Veillard | 3772192 | 2001-05-04 15:21:12 +0000 | [diff] [blame] | 2168 | return (xmlHashLookup(table, ID)); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2169 | } |
| 2170 | |
| 2171 | /************************************************************************ |
| 2172 | * * |
| 2173 | * Routines for validity checking * |
| 2174 | * * |
| 2175 | ************************************************************************/ |
| 2176 | |
| 2177 | /** |
| 2178 | * xmlGetDtdElementDesc: |
| 2179 | * @dtd: a pointer to the DtD to search |
| 2180 | * @name: the element name |
| 2181 | * |
| 2182 | * Search the Dtd for the description of this element |
| 2183 | * |
| 2184 | * returns the xmlElementPtr if found or NULL |
| 2185 | */ |
| 2186 | |
| 2187 | xmlElementPtr |
| 2188 | xmlGetDtdElementDesc(xmlDtdPtr dtd, const xmlChar *name) { |
| 2189 | xmlElementTablePtr table; |
| 2190 | xmlElementPtr cur; |
| 2191 | xmlChar *uqname = NULL, *prefix = NULL; |
| 2192 | |
| 2193 | if (dtd == NULL) return(NULL); |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 2194 | if (dtd->elements == NULL) |
| 2195 | return(NULL); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2196 | table = (xmlElementTablePtr) dtd->elements; |
| 2197 | |
| 2198 | uqname = xmlSplitQName2(name, &prefix); |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 2199 | if (uqname != NULL) |
| 2200 | name = uqname; |
| 2201 | cur = xmlHashLookup2(table, name, prefix); |
| 2202 | if (prefix != NULL) xmlFree(prefix); |
| 2203 | if (uqname != NULL) xmlFree(uqname); |
| 2204 | return(cur); |
| 2205 | } |
| 2206 | /** |
| 2207 | * xmlGetDtdElementDesc2: |
| 2208 | * @dtd: a pointer to the DtD to search |
| 2209 | * @name: the element name |
| 2210 | * @create: create an empty description if not found |
| 2211 | * |
| 2212 | * Search the Dtd for the description of this element |
| 2213 | * |
| 2214 | * returns the xmlElementPtr if found or NULL |
| 2215 | */ |
| 2216 | |
| 2217 | xmlElementPtr |
| 2218 | xmlGetDtdElementDesc2(xmlDtdPtr dtd, const xmlChar *name, int create) { |
| 2219 | xmlElementTablePtr table; |
| 2220 | xmlElementPtr cur; |
| 2221 | xmlChar *uqname = NULL, *prefix = NULL; |
| 2222 | |
| 2223 | if (dtd == NULL) return(NULL); |
| 2224 | if (dtd->elements == NULL) { |
| 2225 | if (!create) |
| 2226 | return(NULL); |
| 2227 | /* |
| 2228 | * Create the Element table if needed. |
| 2229 | */ |
| 2230 | table = (xmlElementTablePtr) dtd->elements; |
| 2231 | if (table == NULL) { |
| 2232 | table = xmlCreateElementTable(); |
| 2233 | dtd->elements = (void *) table; |
| 2234 | } |
| 2235 | if (table == NULL) { |
| 2236 | xmlGenericError(xmlGenericErrorContext, |
| 2237 | "xmlGetDtdElementDesc: Table creation failed!\n"); |
| 2238 | return(NULL); |
| 2239 | } |
| 2240 | } |
| 2241 | table = (xmlElementTablePtr) dtd->elements; |
| 2242 | |
| 2243 | uqname = xmlSplitQName2(name, &prefix); |
| 2244 | if (uqname != NULL) |
| 2245 | name = uqname; |
| 2246 | cur = xmlHashLookup2(table, name, prefix); |
| 2247 | if ((cur == NULL) && (create)) { |
| 2248 | cur = (xmlElementPtr) xmlMalloc(sizeof(xmlElement)); |
| 2249 | if (cur == NULL) { |
| 2250 | xmlGenericError(xmlGenericErrorContext, |
| 2251 | "xmlGetDtdElementDesc: out of memory\n"); |
| 2252 | return(NULL); |
| 2253 | } |
| 2254 | memset(cur, 0, sizeof(xmlElement)); |
| 2255 | cur->type = XML_ELEMENT_DECL; |
| 2256 | |
| 2257 | /* |
| 2258 | * fill the structure. |
| 2259 | */ |
| 2260 | cur->name = xmlStrdup(name); |
| 2261 | cur->prefix = xmlStrdup(prefix); |
| 2262 | cur->etype = XML_ELEMENT_TYPE_UNDEFINED; |
| 2263 | |
| 2264 | xmlHashAddEntry2(table, name, prefix, cur); |
| 2265 | } |
| 2266 | if (prefix != NULL) xmlFree(prefix); |
| 2267 | if (uqname != NULL) xmlFree(uqname); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2268 | return(cur); |
| 2269 | } |
| 2270 | |
| 2271 | /** |
| 2272 | * xmlGetDtdQElementDesc: |
| 2273 | * @dtd: a pointer to the DtD to search |
| 2274 | * @name: the element name |
| 2275 | * @prefix: the element namespace prefix |
| 2276 | * |
| 2277 | * Search the Dtd for the description of this element |
| 2278 | * |
| 2279 | * returns the xmlElementPtr if found or NULL |
| 2280 | */ |
| 2281 | |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 2282 | static xmlElementPtr |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2283 | xmlGetDtdQElementDesc(xmlDtdPtr dtd, const xmlChar *name, |
| 2284 | const xmlChar *prefix) { |
| 2285 | xmlElementTablePtr table; |
| 2286 | |
| 2287 | if (dtd == NULL) return(NULL); |
| 2288 | if (dtd->elements == NULL) return(NULL); |
| 2289 | table = (xmlElementTablePtr) dtd->elements; |
| 2290 | |
| 2291 | return(xmlHashLookup2(table, name, prefix)); |
| 2292 | } |
| 2293 | |
| 2294 | /** |
| 2295 | * xmlGetDtdAttrDesc: |
| 2296 | * @dtd: a pointer to the DtD to search |
| 2297 | * @elem: the element name |
| 2298 | * @name: the attribute name |
| 2299 | * |
| 2300 | * Search the Dtd for the description of this attribute on |
| 2301 | * this element. |
| 2302 | * |
| 2303 | * returns the xmlAttributePtr if found or NULL |
| 2304 | */ |
| 2305 | |
| 2306 | xmlAttributePtr |
| 2307 | xmlGetDtdAttrDesc(xmlDtdPtr dtd, const xmlChar *elem, const xmlChar *name) { |
| 2308 | xmlAttributeTablePtr table; |
| 2309 | xmlAttributePtr cur; |
| 2310 | xmlChar *uqname = NULL, *prefix = NULL; |
| 2311 | |
| 2312 | if (dtd == NULL) return(NULL); |
| 2313 | if (dtd->attributes == NULL) return(NULL); |
| 2314 | |
| 2315 | table = (xmlAttributeTablePtr) dtd->attributes; |
| 2316 | if (table == NULL) |
| 2317 | return(NULL); |
| 2318 | |
| 2319 | uqname = xmlSplitQName2(name, &prefix); |
| 2320 | |
| 2321 | if (uqname != NULL) { |
| 2322 | cur = xmlHashLookup3(table, uqname, prefix, elem); |
| 2323 | if (prefix != NULL) xmlFree(prefix); |
| 2324 | if (uqname != NULL) xmlFree(uqname); |
| 2325 | } else |
| 2326 | cur = xmlHashLookup3(table, name, NULL, elem); |
| 2327 | return(cur); |
| 2328 | } |
| 2329 | |
| 2330 | /** |
| 2331 | * xmlGetDtdQAttrDesc: |
| 2332 | * @dtd: a pointer to the DtD to search |
| 2333 | * @elem: the element name |
| 2334 | * @name: the attribute name |
| 2335 | * @prefix: the attribute namespace prefix |
| 2336 | * |
| 2337 | * Search the Dtd for the description of this qualified attribute on |
| 2338 | * this element. |
| 2339 | * |
| 2340 | * returns the xmlAttributePtr if found or NULL |
| 2341 | */ |
| 2342 | |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 2343 | static xmlAttributePtr |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2344 | xmlGetDtdQAttrDesc(xmlDtdPtr dtd, const xmlChar *elem, const xmlChar *name, |
| 2345 | const xmlChar *prefix) { |
| 2346 | xmlAttributeTablePtr table; |
| 2347 | |
| 2348 | if (dtd == NULL) return(NULL); |
| 2349 | if (dtd->attributes == NULL) return(NULL); |
| 2350 | table = (xmlAttributeTablePtr) dtd->attributes; |
| 2351 | |
| 2352 | return(xmlHashLookup3(table, name, prefix, elem)); |
| 2353 | } |
| 2354 | |
| 2355 | /** |
| 2356 | * xmlGetDtdNotationDesc: |
| 2357 | * @dtd: a pointer to the DtD to search |
| 2358 | * @name: the notation name |
| 2359 | * |
| 2360 | * Search the Dtd for the description of this notation |
| 2361 | * |
| 2362 | * returns the xmlNotationPtr if found or NULL |
| 2363 | */ |
| 2364 | |
| 2365 | xmlNotationPtr |
| 2366 | xmlGetDtdNotationDesc(xmlDtdPtr dtd, const xmlChar *name) { |
| 2367 | xmlNotationTablePtr table; |
| 2368 | |
| 2369 | if (dtd == NULL) return(NULL); |
| 2370 | if (dtd->notations == NULL) return(NULL); |
| 2371 | table = (xmlNotationTablePtr) dtd->notations; |
| 2372 | |
| 2373 | return(xmlHashLookup(table, name)); |
| 2374 | } |
| 2375 | |
| 2376 | /** |
| 2377 | * xmlValidateNotationUse: |
| 2378 | * @ctxt: the validation context |
| 2379 | * @doc: the document |
| 2380 | * @notationName: the notation name to check |
| 2381 | * |
| 2382 | * Validate that the given mame match a notation declaration. |
| 2383 | * - [ VC: Notation Declared ] |
| 2384 | * |
| 2385 | * returns 1 if valid or 0 otherwise |
| 2386 | */ |
| 2387 | |
| 2388 | int |
| 2389 | xmlValidateNotationUse(xmlValidCtxtPtr ctxt, xmlDocPtr doc, |
| 2390 | const xmlChar *notationName) { |
| 2391 | xmlNotationPtr notaDecl; |
| 2392 | if ((doc == NULL) || (doc->intSubset == NULL)) return(-1); |
| 2393 | |
| 2394 | notaDecl = xmlGetDtdNotationDesc(doc->intSubset, notationName); |
| 2395 | if ((notaDecl == NULL) && (doc->extSubset != NULL)) |
| 2396 | notaDecl = xmlGetDtdNotationDesc(doc->extSubset, notationName); |
| 2397 | |
| 2398 | if (notaDecl == NULL) { |
| 2399 | VERROR(ctxt->userData, "NOTATION %s is not declared\n", |
| 2400 | notationName); |
| 2401 | return(0); |
| 2402 | } |
| 2403 | return(1); |
| 2404 | } |
| 2405 | |
| 2406 | /** |
| 2407 | * xmlIsMixedElement |
| 2408 | * @doc: the document |
| 2409 | * @name: the element name |
| 2410 | * |
| 2411 | * Search in the DtDs whether an element accept Mixed content (or ANY) |
| 2412 | * basically if it is supposed to accept text childs |
| 2413 | * |
| 2414 | * returns 0 if no, 1 if yes, and -1 if no element description is available |
| 2415 | */ |
| 2416 | |
| 2417 | int |
| 2418 | xmlIsMixedElement(xmlDocPtr doc, const xmlChar *name) { |
| 2419 | xmlElementPtr elemDecl; |
| 2420 | |
| 2421 | if ((doc == NULL) || (doc->intSubset == NULL)) return(-1); |
| 2422 | |
| 2423 | elemDecl = xmlGetDtdElementDesc(doc->intSubset, name); |
| 2424 | if ((elemDecl == NULL) && (doc->extSubset != NULL)) |
| 2425 | elemDecl = xmlGetDtdElementDesc(doc->extSubset, name); |
| 2426 | if (elemDecl == NULL) return(-1); |
| 2427 | switch (elemDecl->etype) { |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 2428 | case XML_ELEMENT_TYPE_UNDEFINED: |
| 2429 | return(-1); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2430 | case XML_ELEMENT_TYPE_ELEMENT: |
| 2431 | return(0); |
| 2432 | case XML_ELEMENT_TYPE_EMPTY: |
| 2433 | /* |
| 2434 | * return 1 for EMPTY since we want VC error to pop up |
| 2435 | * on <empty> </empty> for example |
| 2436 | */ |
| 2437 | case XML_ELEMENT_TYPE_ANY: |
| 2438 | case XML_ELEMENT_TYPE_MIXED: |
| 2439 | return(1); |
| 2440 | } |
| 2441 | return(1); |
| 2442 | } |
| 2443 | |
| 2444 | /** |
| 2445 | * xmlValidateNameValue: |
| 2446 | * @value: an Name value |
| 2447 | * |
| 2448 | * Validate that the given value match Name production |
| 2449 | * |
| 2450 | * returns 1 if valid or 0 otherwise |
| 2451 | */ |
| 2452 | |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 2453 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2454 | xmlValidateNameValue(const xmlChar *value) { |
| 2455 | const xmlChar *cur; |
| 2456 | |
| 2457 | if (value == NULL) return(0); |
| 2458 | cur = value; |
| 2459 | |
| 2460 | if (!IS_LETTER(*cur) && (*cur != '_') && |
| 2461 | (*cur != ':')) { |
| 2462 | return(0); |
| 2463 | } |
| 2464 | |
| 2465 | while ((IS_LETTER(*cur)) || (IS_DIGIT(*cur)) || |
| 2466 | (*cur == '.') || (*cur == '-') || |
| 2467 | (*cur == '_') || (*cur == ':') || |
| 2468 | (IS_COMBINING(*cur)) || |
| 2469 | (IS_EXTENDER(*cur))) |
| 2470 | cur++; |
| 2471 | |
| 2472 | if (*cur != 0) return(0); |
| 2473 | |
| 2474 | return(1); |
| 2475 | } |
| 2476 | |
| 2477 | /** |
| 2478 | * xmlValidateNamesValue: |
| 2479 | * @value: an Names value |
| 2480 | * |
| 2481 | * Validate that the given value match Names production |
| 2482 | * |
| 2483 | * returns 1 if valid or 0 otherwise |
| 2484 | */ |
| 2485 | |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 2486 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2487 | xmlValidateNamesValue(const xmlChar *value) { |
| 2488 | const xmlChar *cur; |
| 2489 | |
| 2490 | if (value == NULL) return(0); |
| 2491 | cur = value; |
| 2492 | |
| 2493 | if (!IS_LETTER(*cur) && (*cur != '_') && |
| 2494 | (*cur != ':')) { |
| 2495 | return(0); |
| 2496 | } |
| 2497 | |
| 2498 | while ((IS_LETTER(*cur)) || (IS_DIGIT(*cur)) || |
| 2499 | (*cur == '.') || (*cur == '-') || |
| 2500 | (*cur == '_') || (*cur == ':') || |
| 2501 | (IS_COMBINING(*cur)) || |
| 2502 | (IS_EXTENDER(*cur))) |
| 2503 | cur++; |
| 2504 | |
| 2505 | while (IS_BLANK(*cur)) { |
| 2506 | while (IS_BLANK(*cur)) cur++; |
| 2507 | |
| 2508 | if (!IS_LETTER(*cur) && (*cur != '_') && |
| 2509 | (*cur != ':')) { |
| 2510 | return(0); |
| 2511 | } |
| 2512 | |
| 2513 | while ((IS_LETTER(*cur)) || (IS_DIGIT(*cur)) || |
| 2514 | (*cur == '.') || (*cur == '-') || |
| 2515 | (*cur == '_') || (*cur == ':') || |
| 2516 | (IS_COMBINING(*cur)) || |
| 2517 | (IS_EXTENDER(*cur))) |
| 2518 | cur++; |
| 2519 | } |
| 2520 | |
| 2521 | if (*cur != 0) return(0); |
| 2522 | |
| 2523 | return(1); |
| 2524 | } |
| 2525 | |
| 2526 | /** |
| 2527 | * xmlValidateNmtokenValue: |
| 2528 | * @value: an Mntoken value |
| 2529 | * |
| 2530 | * Validate that the given value match Nmtoken production |
| 2531 | * |
| 2532 | * [ VC: Name Token ] |
| 2533 | * |
| 2534 | * returns 1 if valid or 0 otherwise |
| 2535 | */ |
| 2536 | |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 2537 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2538 | xmlValidateNmtokenValue(const xmlChar *value) { |
| 2539 | const xmlChar *cur; |
| 2540 | |
| 2541 | if (value == NULL) return(0); |
| 2542 | cur = value; |
| 2543 | |
| 2544 | if (!IS_LETTER(*cur) && !IS_DIGIT(*cur) && |
| 2545 | (*cur != '.') && (*cur != '-') && |
| 2546 | (*cur != '_') && (*cur != ':') && |
| 2547 | (!IS_COMBINING(*cur)) && |
| 2548 | (!IS_EXTENDER(*cur))) |
| 2549 | return(0); |
| 2550 | |
| 2551 | while ((IS_LETTER(*cur)) || (IS_DIGIT(*cur)) || |
| 2552 | (*cur == '.') || (*cur == '-') || |
| 2553 | (*cur == '_') || (*cur == ':') || |
| 2554 | (IS_COMBINING(*cur)) || |
| 2555 | (IS_EXTENDER(*cur))) |
| 2556 | cur++; |
| 2557 | |
| 2558 | if (*cur != 0) return(0); |
| 2559 | |
| 2560 | return(1); |
| 2561 | } |
| 2562 | |
| 2563 | /** |
| 2564 | * xmlValidateNmtokensValue: |
| 2565 | * @value: an Mntokens value |
| 2566 | * |
| 2567 | * Validate that the given value match Nmtokens production |
| 2568 | * |
| 2569 | * [ VC: Name Token ] |
| 2570 | * |
| 2571 | * returns 1 if valid or 0 otherwise |
| 2572 | */ |
| 2573 | |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 2574 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2575 | xmlValidateNmtokensValue(const xmlChar *value) { |
| 2576 | const xmlChar *cur; |
| 2577 | |
| 2578 | if (value == NULL) return(0); |
| 2579 | cur = value; |
| 2580 | |
| 2581 | while (IS_BLANK(*cur)) cur++; |
| 2582 | if (!IS_LETTER(*cur) && !IS_DIGIT(*cur) && |
| 2583 | (*cur != '.') && (*cur != '-') && |
| 2584 | (*cur != '_') && (*cur != ':') && |
| 2585 | (!IS_COMBINING(*cur)) && |
| 2586 | (!IS_EXTENDER(*cur))) |
| 2587 | return(0); |
| 2588 | |
| 2589 | while ((IS_LETTER(*cur)) || (IS_DIGIT(*cur)) || |
| 2590 | (*cur == '.') || (*cur == '-') || |
| 2591 | (*cur == '_') || (*cur == ':') || |
| 2592 | (IS_COMBINING(*cur)) || |
| 2593 | (IS_EXTENDER(*cur))) |
| 2594 | cur++; |
| 2595 | |
| 2596 | while (IS_BLANK(*cur)) { |
| 2597 | while (IS_BLANK(*cur)) cur++; |
| 2598 | if (*cur == 0) return(1); |
| 2599 | |
| 2600 | if (!IS_LETTER(*cur) && !IS_DIGIT(*cur) && |
| 2601 | (*cur != '.') && (*cur != '-') && |
| 2602 | (*cur != '_') && (*cur != ':') && |
| 2603 | (!IS_COMBINING(*cur)) && |
| 2604 | (!IS_EXTENDER(*cur))) |
| 2605 | return(0); |
| 2606 | |
| 2607 | while ((IS_LETTER(*cur)) || (IS_DIGIT(*cur)) || |
| 2608 | (*cur == '.') || (*cur == '-') || |
| 2609 | (*cur == '_') || (*cur == ':') || |
| 2610 | (IS_COMBINING(*cur)) || |
| 2611 | (IS_EXTENDER(*cur))) |
| 2612 | cur++; |
| 2613 | } |
| 2614 | |
| 2615 | if (*cur != 0) return(0); |
| 2616 | |
| 2617 | return(1); |
| 2618 | } |
| 2619 | |
| 2620 | /** |
| 2621 | * xmlValidateNotationDecl: |
| 2622 | * @ctxt: the validation context |
| 2623 | * @doc: a document instance |
| 2624 | * @nota: a notation definition |
| 2625 | * |
| 2626 | * Try to validate a single notation definition |
| 2627 | * basically it does the following checks as described by the |
| 2628 | * XML-1.0 recommendation: |
| 2629 | * - it seems that no validity constraing exist on notation declarations |
| 2630 | * But this function get called anyway ... |
| 2631 | * |
| 2632 | * returns 1 if valid or 0 otherwise |
| 2633 | */ |
| 2634 | |
| 2635 | int |
Daniel Veillard | c86a4fa | 2001-03-26 16:28:29 +0000 | [diff] [blame] | 2636 | xmlValidateNotationDecl(xmlValidCtxtPtr ctxt ATTRIBUTE_UNUSED, xmlDocPtr doc ATTRIBUTE_UNUSED, |
| 2637 | xmlNotationPtr nota ATTRIBUTE_UNUSED) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2638 | int ret = 1; |
| 2639 | |
| 2640 | return(ret); |
| 2641 | } |
| 2642 | |
| 2643 | /** |
| 2644 | * xmlValidateAttributeValue: |
| 2645 | * @type: an attribute type |
| 2646 | * @value: an attribute value |
| 2647 | * |
| 2648 | * Validate that the given attribute value match the proper production |
| 2649 | * |
| 2650 | * [ VC: ID ] |
| 2651 | * Values of type ID must match the Name production.... |
| 2652 | * |
| 2653 | * [ VC: IDREF ] |
| 2654 | * Values of type IDREF must match the Name production, and values |
| 2655 | * of type IDREFS must match Names ... |
| 2656 | * |
| 2657 | * [ VC: Entity Name ] |
| 2658 | * Values of type ENTITY must match the Name production, values |
| 2659 | * of type ENTITIES must match Names ... |
| 2660 | * |
| 2661 | * [ VC: Name Token ] |
| 2662 | * Values of type NMTOKEN must match the Nmtoken production; values |
| 2663 | * of type NMTOKENS must match Nmtokens. |
| 2664 | * |
| 2665 | * returns 1 if valid or 0 otherwise |
| 2666 | */ |
| 2667 | |
| 2668 | int |
| 2669 | xmlValidateAttributeValue(xmlAttributeType type, const xmlChar *value) { |
| 2670 | switch (type) { |
| 2671 | case XML_ATTRIBUTE_ENTITIES: |
| 2672 | case XML_ATTRIBUTE_IDREFS: |
| 2673 | return(xmlValidateNamesValue(value)); |
| 2674 | case XML_ATTRIBUTE_ENTITY: |
| 2675 | case XML_ATTRIBUTE_IDREF: |
| 2676 | case XML_ATTRIBUTE_ID: |
| 2677 | case XML_ATTRIBUTE_NOTATION: |
| 2678 | return(xmlValidateNameValue(value)); |
| 2679 | case XML_ATTRIBUTE_NMTOKENS: |
| 2680 | case XML_ATTRIBUTE_ENUMERATION: |
| 2681 | return(xmlValidateNmtokensValue(value)); |
| 2682 | case XML_ATTRIBUTE_NMTOKEN: |
| 2683 | return(xmlValidateNmtokenValue(value)); |
| 2684 | case XML_ATTRIBUTE_CDATA: |
| 2685 | break; |
| 2686 | } |
| 2687 | return(1); |
| 2688 | } |
| 2689 | |
| 2690 | /** |
| 2691 | * xmlValidateAttributeValue2: |
| 2692 | * @ctxt: the validation context |
| 2693 | * @doc: the document |
| 2694 | * @name: the attribute name (used for error reporting only) |
| 2695 | * @type: the attribute type |
| 2696 | * @value: the attribute value |
| 2697 | * |
| 2698 | * Validate that the given attribute value match a given type. |
| 2699 | * This typically cannot be done before having finished parsing |
| 2700 | * the subsets. |
| 2701 | * |
| 2702 | * [ VC: IDREF ] |
| 2703 | * Values of type IDREF must match one of the declared IDs |
| 2704 | * Values of type IDREFS must match a sequence of the declared IDs |
| 2705 | * each Name must match the value of an ID attribute on some element |
| 2706 | * in the XML document; i.e. IDREF values must match the value of |
| 2707 | * some ID attribute |
| 2708 | * |
| 2709 | * [ VC: Entity Name ] |
| 2710 | * Values of type ENTITY must match one declared entity |
| 2711 | * Values of type ENTITIES must match a sequence of declared entities |
| 2712 | * |
| 2713 | * [ VC: Notation Attributes ] |
| 2714 | * all notation names in the declaration must be declared. |
| 2715 | * |
| 2716 | * returns 1 if valid or 0 otherwise |
| 2717 | */ |
| 2718 | |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 2719 | static int |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2720 | xmlValidateAttributeValue2(xmlValidCtxtPtr ctxt, xmlDocPtr doc, |
| 2721 | const xmlChar *name, xmlAttributeType type, const xmlChar *value) { |
| 2722 | int ret = 1; |
| 2723 | switch (type) { |
| 2724 | case XML_ATTRIBUTE_IDREFS: |
| 2725 | case XML_ATTRIBUTE_IDREF: |
| 2726 | case XML_ATTRIBUTE_ID: |
| 2727 | case XML_ATTRIBUTE_NMTOKENS: |
| 2728 | case XML_ATTRIBUTE_ENUMERATION: |
| 2729 | case XML_ATTRIBUTE_NMTOKEN: |
| 2730 | case XML_ATTRIBUTE_CDATA: |
| 2731 | break; |
| 2732 | case XML_ATTRIBUTE_ENTITY: { |
| 2733 | xmlEntityPtr ent; |
| 2734 | |
| 2735 | ent = xmlGetDocEntity(doc, value); |
| 2736 | if (ent == NULL) { |
| 2737 | VERROR(ctxt->userData, |
| 2738 | "ENTITY attribute %s reference an unknown entity \"%s\"\n", |
| 2739 | name, value); |
| 2740 | ret = 0; |
| 2741 | } else if (ent->etype != XML_EXTERNAL_GENERAL_UNPARSED_ENTITY) { |
| 2742 | VERROR(ctxt->userData, |
| 2743 | "ENTITY attribute %s reference an entity \"%s\" of wrong type\n", |
| 2744 | name, value); |
| 2745 | ret = 0; |
| 2746 | } |
| 2747 | break; |
| 2748 | } |
| 2749 | case XML_ATTRIBUTE_ENTITIES: { |
| 2750 | xmlChar *dup, *nam = NULL, *cur, save; |
| 2751 | xmlEntityPtr ent; |
| 2752 | |
| 2753 | dup = xmlStrdup(value); |
| 2754 | if (dup == NULL) |
| 2755 | return(0); |
| 2756 | cur = dup; |
| 2757 | while (*cur != 0) { |
| 2758 | nam = cur; |
| 2759 | while ((*cur != 0) && (!IS_BLANK(*cur))) cur++; |
| 2760 | save = *cur; |
| 2761 | *cur = 0; |
| 2762 | ent = xmlGetDocEntity(doc, nam); |
| 2763 | if (ent == NULL) { |
| 2764 | VERROR(ctxt->userData, |
| 2765 | "ENTITIES attribute %s reference an unknown entity \"%s\"\n", |
| 2766 | name, nam); |
| 2767 | ret = 0; |
| 2768 | } else if (ent->etype != XML_EXTERNAL_GENERAL_UNPARSED_ENTITY) { |
| 2769 | VERROR(ctxt->userData, |
| 2770 | "ENTITIES attribute %s reference an entity \"%s\" of wrong type\n", |
| 2771 | name, nam); |
| 2772 | ret = 0; |
| 2773 | } |
| 2774 | if (save == 0) |
| 2775 | break; |
| 2776 | *cur = save; |
| 2777 | while (IS_BLANK(*cur)) cur++; |
| 2778 | } |
| 2779 | xmlFree(dup); |
| 2780 | break; |
| 2781 | } |
| 2782 | case XML_ATTRIBUTE_NOTATION: { |
| 2783 | xmlNotationPtr nota; |
| 2784 | |
| 2785 | nota = xmlGetDtdNotationDesc(doc->intSubset, value); |
| 2786 | if ((nota == NULL) && (doc->extSubset != NULL)) |
| 2787 | nota = xmlGetDtdNotationDesc(doc->extSubset, value); |
| 2788 | |
| 2789 | if (nota == NULL) { |
| 2790 | VERROR(ctxt->userData, |
| 2791 | "NOTATION attribute %s reference an unknown notation \"%s\"\n", |
| 2792 | name, value); |
| 2793 | ret = 0; |
| 2794 | } |
| 2795 | break; |
| 2796 | } |
| 2797 | } |
| 2798 | return(ret); |
| 2799 | } |
| 2800 | |
| 2801 | /** |
| 2802 | * xmlValidNormalizeAttributeValue: |
| 2803 | * @doc: the document |
| 2804 | * @elem: the parent |
| 2805 | * @name: the attribute name |
| 2806 | * @value: the attribute value |
| 2807 | * |
| 2808 | * Does the validation related extra step of the normalization of attribute |
| 2809 | * values: |
| 2810 | * |
| 2811 | * If the declared value is not CDATA, then the XML processor must further |
| 2812 | * process the normalized attribute value by discarding any leading and |
| 2813 | * trailing space (#x20) characters, and by replacing sequences of space |
| 2814 | * (#x20) characters by single space (#x20) character. |
| 2815 | * |
| 2816 | * returns a new normalized string if normalization is needed, NULL otherwise |
| 2817 | * the caller must free the returned value. |
| 2818 | */ |
| 2819 | |
| 2820 | xmlChar * |
| 2821 | xmlValidNormalizeAttributeValue(xmlDocPtr doc, xmlNodePtr elem, |
| 2822 | const xmlChar *name, const xmlChar *value) { |
| 2823 | xmlChar *ret, *dst; |
| 2824 | const xmlChar *src; |
| 2825 | xmlAttributePtr attrDecl = NULL; |
| 2826 | |
| 2827 | if (doc == NULL) return(NULL); |
| 2828 | if (elem == NULL) return(NULL); |
| 2829 | if (name == NULL) return(NULL); |
| 2830 | if (value == NULL) return(NULL); |
| 2831 | |
| 2832 | if ((elem->ns != NULL) && (elem->ns->prefix != NULL)) { |
| 2833 | xmlChar qname[500]; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2834 | snprintf((char *) qname, sizeof(qname), "%s:%s", |
| 2835 | elem->ns->prefix, elem->name); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2836 | qname[sizeof(qname) - 1] = 0; |
| 2837 | attrDecl = xmlGetDtdAttrDesc(doc->intSubset, qname, name); |
| 2838 | if ((attrDecl == NULL) && (doc->extSubset != NULL)) |
| 2839 | attrDecl = xmlGetDtdAttrDesc(doc->extSubset, qname, name); |
| 2840 | } |
| 2841 | attrDecl = xmlGetDtdAttrDesc(doc->intSubset, elem->name, name); |
| 2842 | if ((attrDecl == NULL) && (doc->extSubset != NULL)) |
| 2843 | attrDecl = xmlGetDtdAttrDesc(doc->extSubset, elem->name, name); |
| 2844 | |
| 2845 | if (attrDecl == NULL) |
| 2846 | return(NULL); |
| 2847 | if (attrDecl->atype == XML_ATTRIBUTE_CDATA) |
| 2848 | return(NULL); |
| 2849 | |
| 2850 | ret = xmlStrdup(value); |
| 2851 | if (ret == NULL) |
| 2852 | return(NULL); |
| 2853 | src = value; |
| 2854 | dst = ret; |
| 2855 | while (*src == 0x20) src++; |
| 2856 | while (*src != 0) { |
| 2857 | if (*src == 0x20) { |
| 2858 | while (*src == 0x20) src++; |
| 2859 | if (*src != 0) |
| 2860 | *dst++ = 0x20; |
| 2861 | } else { |
| 2862 | *dst++ = *src++; |
| 2863 | } |
| 2864 | } |
| 2865 | *dst = 0; |
| 2866 | return(ret); |
| 2867 | } |
| 2868 | |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 2869 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2870 | xmlValidateAttributeIdCallback(xmlAttributePtr attr, int *count, |
Daniel Veillard | c86a4fa | 2001-03-26 16:28:29 +0000 | [diff] [blame] | 2871 | const xmlChar* name ATTRIBUTE_UNUSED) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2872 | if (attr->atype == XML_ATTRIBUTE_ID) (*count)++; |
| 2873 | } |
| 2874 | |
| 2875 | /** |
| 2876 | * xmlValidateAttributeDecl: |
| 2877 | * @ctxt: the validation context |
| 2878 | * @doc: a document instance |
| 2879 | * @attr: an attribute definition |
| 2880 | * |
| 2881 | * Try to validate a single attribute definition |
| 2882 | * basically it does the following checks as described by the |
| 2883 | * XML-1.0 recommendation: |
| 2884 | * - [ VC: Attribute Default Legal ] |
| 2885 | * - [ VC: Enumeration ] |
| 2886 | * - [ VC: ID Attribute Default ] |
| 2887 | * |
| 2888 | * The ID/IDREF uniqueness and matching are done separately |
| 2889 | * |
| 2890 | * returns 1 if valid or 0 otherwise |
| 2891 | */ |
| 2892 | |
| 2893 | int |
| 2894 | xmlValidateAttributeDecl(xmlValidCtxtPtr ctxt, xmlDocPtr doc, |
| 2895 | xmlAttributePtr attr) { |
| 2896 | int ret = 1; |
| 2897 | int val; |
| 2898 | CHECK_DTD; |
| 2899 | if(attr == NULL) return(1); |
| 2900 | |
| 2901 | /* Attribute Default Legal */ |
| 2902 | /* Enumeration */ |
| 2903 | if (attr->defaultValue != NULL) { |
| 2904 | val = xmlValidateAttributeValue(attr->atype, attr->defaultValue); |
| 2905 | if (val == 0) { |
| 2906 | VERROR(ctxt->userData, |
| 2907 | "Syntax of default value for attribute %s on %s is not valid\n", |
| 2908 | attr->name, attr->elem); |
| 2909 | } |
| 2910 | ret &= val; |
| 2911 | } |
| 2912 | |
| 2913 | /* ID Attribute Default */ |
| 2914 | if ((attr->atype == XML_ATTRIBUTE_ID)&& |
| 2915 | (attr->def != XML_ATTRIBUTE_IMPLIED) && |
| 2916 | (attr->def != XML_ATTRIBUTE_REQUIRED)) { |
| 2917 | VERROR(ctxt->userData, |
| 2918 | "ID attribute %s on %s is not valid must be #IMPLIED or #REQUIRED\n", |
| 2919 | attr->name, attr->elem); |
| 2920 | ret = 0; |
| 2921 | } |
| 2922 | |
| 2923 | /* One ID per Element Type */ |
| 2924 | if (attr->atype == XML_ATTRIBUTE_ID) { |
| 2925 | int nbId; |
| 2926 | |
| 2927 | /* the trick is taht we parse DtD as their own internal subset */ |
| 2928 | xmlElementPtr elem = xmlGetDtdElementDesc(doc->intSubset, |
| 2929 | attr->elem); |
| 2930 | if (elem != NULL) { |
| 2931 | nbId = xmlScanIDAttributeDecl(NULL, elem); |
| 2932 | } else { |
| 2933 | xmlAttributeTablePtr table; |
| 2934 | |
| 2935 | /* |
| 2936 | * The attribute may be declared in the internal subset and the |
| 2937 | * element in the external subset. |
| 2938 | */ |
| 2939 | nbId = 0; |
| 2940 | table = (xmlAttributeTablePtr) doc->intSubset->attributes; |
| 2941 | xmlHashScan3(table, NULL, NULL, attr->elem, (xmlHashScanner) |
| 2942 | xmlValidateAttributeIdCallback, &nbId); |
| 2943 | } |
| 2944 | if (nbId > 1) { |
| 2945 | VERROR(ctxt->userData, |
| 2946 | "Element %s has %d ID attribute defined in the internal subset : %s\n", |
| 2947 | attr->elem, nbId, attr->name); |
| 2948 | } else if (doc->extSubset != NULL) { |
| 2949 | int extId = 0; |
| 2950 | elem = xmlGetDtdElementDesc(doc->extSubset, attr->elem); |
| 2951 | if (elem != NULL) { |
| 2952 | extId = xmlScanIDAttributeDecl(NULL, elem); |
| 2953 | } |
| 2954 | if (extId > 1) { |
| 2955 | VERROR(ctxt->userData, |
| 2956 | "Element %s has %d ID attribute defined in the external subset : %s\n", |
| 2957 | attr->elem, extId, attr->name); |
| 2958 | } else if (extId + nbId > 1) { |
| 2959 | VERROR(ctxt->userData, |
| 2960 | "Element %s has ID attributes defined in the internal and external subset : %s\n", |
| 2961 | attr->elem, attr->name); |
| 2962 | } |
| 2963 | } |
| 2964 | } |
| 2965 | |
| 2966 | /* Validity Constraint: Enumeration */ |
| 2967 | if ((attr->defaultValue != NULL) && (attr->tree != NULL)) { |
| 2968 | xmlEnumerationPtr tree = attr->tree; |
| 2969 | while (tree != NULL) { |
| 2970 | if (xmlStrEqual(tree->name, attr->defaultValue)) break; |
| 2971 | tree = tree->next; |
| 2972 | } |
| 2973 | if (tree == NULL) { |
| 2974 | VERROR(ctxt->userData, |
| 2975 | "Default value \"%s\" for attribute %s on %s is not among the enumerated set\n", |
| 2976 | attr->defaultValue, attr->name, attr->elem); |
| 2977 | ret = 0; |
| 2978 | } |
| 2979 | } |
| 2980 | |
| 2981 | return(ret); |
| 2982 | } |
| 2983 | |
| 2984 | /** |
| 2985 | * xmlValidateElementDecl: |
| 2986 | * @ctxt: the validation context |
| 2987 | * @doc: a document instance |
| 2988 | * @elem: an element definition |
| 2989 | * |
| 2990 | * Try to validate a single element definition |
| 2991 | * basically it does the following checks as described by the |
| 2992 | * XML-1.0 recommendation: |
| 2993 | * - [ VC: One ID per Element Type ] |
| 2994 | * - [ VC: No Duplicate Types ] |
| 2995 | * - [ VC: Unique Element Type Declaration ] |
| 2996 | * |
| 2997 | * returns 1 if valid or 0 otherwise |
| 2998 | */ |
| 2999 | |
| 3000 | int |
| 3001 | xmlValidateElementDecl(xmlValidCtxtPtr ctxt, xmlDocPtr doc, |
| 3002 | xmlElementPtr elem) { |
| 3003 | int ret = 1; |
| 3004 | xmlElementPtr tst; |
| 3005 | |
| 3006 | CHECK_DTD; |
| 3007 | |
| 3008 | if (elem == NULL) return(1); |
| 3009 | |
| 3010 | /* No Duplicate Types */ |
| 3011 | if (elem->etype == XML_ELEMENT_TYPE_MIXED) { |
| 3012 | xmlElementContentPtr cur, next; |
| 3013 | const xmlChar *name; |
| 3014 | |
| 3015 | cur = elem->content; |
| 3016 | while (cur != NULL) { |
| 3017 | if (cur->type != XML_ELEMENT_CONTENT_OR) break; |
| 3018 | if (cur->c1 == NULL) break; |
| 3019 | if (cur->c1->type == XML_ELEMENT_CONTENT_ELEMENT) { |
| 3020 | name = cur->c1->name; |
| 3021 | next = cur->c2; |
| 3022 | while (next != NULL) { |
| 3023 | if (next->type == XML_ELEMENT_CONTENT_ELEMENT) { |
| 3024 | if (xmlStrEqual(next->name, name)) { |
| 3025 | VERROR(ctxt->userData, |
| 3026 | "Definition of %s has duplicate references of %s\n", |
| 3027 | elem->name, name); |
| 3028 | ret = 0; |
| 3029 | } |
| 3030 | break; |
| 3031 | } |
| 3032 | if (next->c1 == NULL) break; |
| 3033 | if (next->c1->type != XML_ELEMENT_CONTENT_ELEMENT) break; |
| 3034 | if (xmlStrEqual(next->c1->name, name)) { |
| 3035 | VERROR(ctxt->userData, |
| 3036 | "Definition of %s has duplicate references of %s\n", |
| 3037 | elem->name, name); |
| 3038 | ret = 0; |
| 3039 | } |
| 3040 | next = next->c2; |
| 3041 | } |
| 3042 | } |
| 3043 | cur = cur->c2; |
| 3044 | } |
| 3045 | } |
| 3046 | |
| 3047 | /* VC: Unique Element Type Declaration */ |
| 3048 | tst = xmlGetDtdElementDesc(doc->intSubset, elem->name); |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 3049 | if ((tst != NULL ) && (tst != elem) && |
| 3050 | (tst->etype != XML_ELEMENT_TYPE_UNDEFINED)) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 3051 | VERROR(ctxt->userData, "Redefinition of element %s\n", |
| 3052 | elem->name); |
| 3053 | ret = 0; |
| 3054 | } |
| 3055 | tst = xmlGetDtdElementDesc(doc->extSubset, elem->name); |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 3056 | if ((tst != NULL ) && (tst != elem) && |
| 3057 | (tst->etype != XML_ELEMENT_TYPE_UNDEFINED)) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 3058 | VERROR(ctxt->userData, "Redefinition of element %s\n", |
| 3059 | elem->name); |
| 3060 | ret = 0; |
| 3061 | } |
| 3062 | |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 3063 | /* One ID per Element Type |
| 3064 | * already done when registering the attribute |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 3065 | if (xmlScanIDAttributeDecl(ctxt, elem) > 1) { |
| 3066 | ret = 0; |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 3067 | } */ |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 3068 | return(ret); |
| 3069 | } |
| 3070 | |
| 3071 | /** |
| 3072 | * xmlValidateOneAttribute: |
| 3073 | * @ctxt: the validation context |
| 3074 | * @doc: a document instance |
| 3075 | * @elem: an element instance |
| 3076 | * @attr: an attribute instance |
| 3077 | * @value: the attribute value (without entities processing) |
| 3078 | * |
| 3079 | * Try to validate a single attribute for an element |
| 3080 | * basically it does the following checks as described by the |
| 3081 | * XML-1.0 recommendation: |
| 3082 | * - [ VC: Attribute Value Type ] |
| 3083 | * - [ VC: Fixed Attribute Default ] |
| 3084 | * - [ VC: Entity Name ] |
| 3085 | * - [ VC: Name Token ] |
| 3086 | * - [ VC: ID ] |
| 3087 | * - [ VC: IDREF ] |
| 3088 | * - [ VC: Entity Name ] |
| 3089 | * - [ VC: Notation Attributes ] |
| 3090 | * |
| 3091 | * The ID/IDREF uniqueness and matching are done separately |
| 3092 | * |
| 3093 | * returns 1 if valid or 0 otherwise |
| 3094 | */ |
| 3095 | |
| 3096 | int |
| 3097 | xmlValidateOneAttribute(xmlValidCtxtPtr ctxt, xmlDocPtr doc, |
| 3098 | xmlNodePtr elem, xmlAttrPtr attr, const xmlChar *value) { |
| 3099 | /* xmlElementPtr elemDecl; */ |
| 3100 | xmlAttributePtr attrDecl = NULL; |
| 3101 | int val; |
| 3102 | int ret = 1; |
| 3103 | |
| 3104 | CHECK_DTD; |
| 3105 | if ((elem == NULL) || (elem->name == NULL)) return(0); |
| 3106 | if ((attr == NULL) || (attr->name == NULL)) return(0); |
| 3107 | |
| 3108 | if ((elem->ns != NULL) && (elem->ns->prefix != NULL)) { |
| 3109 | xmlChar qname[500]; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 3110 | snprintf((char *) qname, sizeof(qname), "%s:%s", |
| 3111 | elem->ns->prefix, elem->name); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 3112 | qname[sizeof(qname) - 1] = 0; |
| 3113 | if (attr->ns != NULL) { |
| 3114 | attrDecl = xmlGetDtdQAttrDesc(doc->intSubset, qname, |
| 3115 | attr->name, attr->ns->prefix); |
| 3116 | if ((attrDecl == NULL) && (doc->extSubset != NULL)) |
| 3117 | attrDecl = xmlGetDtdQAttrDesc(doc->extSubset, qname, |
| 3118 | attr->name, attr->ns->prefix); |
| 3119 | } else { |
| 3120 | attrDecl = xmlGetDtdAttrDesc(doc->intSubset, qname, attr->name); |
| 3121 | if ((attrDecl == NULL) && (doc->extSubset != NULL)) |
| 3122 | attrDecl = xmlGetDtdAttrDesc(doc->extSubset, |
| 3123 | qname, attr->name); |
| 3124 | } |
| 3125 | } |
| 3126 | if (attrDecl == NULL) { |
| 3127 | if (attr->ns != NULL) { |
| 3128 | attrDecl = xmlGetDtdQAttrDesc(doc->intSubset, elem->name, |
| 3129 | attr->name, attr->ns->prefix); |
| 3130 | if ((attrDecl == NULL) && (doc->extSubset != NULL)) |
| 3131 | attrDecl = xmlGetDtdQAttrDesc(doc->extSubset, elem->name, |
| 3132 | attr->name, attr->ns->prefix); |
| 3133 | } else { |
| 3134 | attrDecl = xmlGetDtdAttrDesc(doc->intSubset, |
| 3135 | elem->name, attr->name); |
| 3136 | if ((attrDecl == NULL) && (doc->extSubset != NULL)) |
| 3137 | attrDecl = xmlGetDtdAttrDesc(doc->extSubset, |
| 3138 | elem->name, attr->name); |
| 3139 | } |
| 3140 | } |
| 3141 | |
| 3142 | |
| 3143 | /* Validity Constraint: Attribute Value Type */ |
| 3144 | if (attrDecl == NULL) { |
| 3145 | VERROR(ctxt->userData, |
| 3146 | "No declaration for attribute %s on element %s\n", |
| 3147 | attr->name, elem->name); |
| 3148 | return(0); |
| 3149 | } |
| 3150 | attr->atype = attrDecl->atype; |
| 3151 | |
| 3152 | val = xmlValidateAttributeValue(attrDecl->atype, value); |
| 3153 | if (val == 0) { |
| 3154 | VERROR(ctxt->userData, |
| 3155 | "Syntax of value for attribute %s on %s is not valid\n", |
| 3156 | attr->name, elem->name); |
| 3157 | ret = 0; |
| 3158 | } |
| 3159 | |
| 3160 | /* Validity constraint: Fixed Attribute Default */ |
| 3161 | if (attrDecl->def == XML_ATTRIBUTE_FIXED) { |
| 3162 | if (!xmlStrEqual(value, attrDecl->defaultValue)) { |
| 3163 | VERROR(ctxt->userData, |
| 3164 | "Value for attribute %s on %s is differnt from default \"%s\"\n", |
| 3165 | attr->name, elem->name, attrDecl->defaultValue); |
| 3166 | ret = 0; |
| 3167 | } |
| 3168 | } |
| 3169 | |
| 3170 | /* Validity Constraint: ID uniqueness */ |
| 3171 | if (attrDecl->atype == XML_ATTRIBUTE_ID) { |
| 3172 | if (xmlAddID(ctxt, doc, value, attr) == NULL) |
| 3173 | ret = 0; |
| 3174 | } |
| 3175 | |
| 3176 | if ((attrDecl->atype == XML_ATTRIBUTE_IDREF) || |
| 3177 | (attrDecl->atype == XML_ATTRIBUTE_IDREFS)) { |
| 3178 | if (xmlAddRef(ctxt, doc, value, attr) == NULL) |
| 3179 | ret = 0; |
| 3180 | } |
| 3181 | |
| 3182 | /* Validity Constraint: Notation Attributes */ |
| 3183 | if (attrDecl->atype == XML_ATTRIBUTE_NOTATION) { |
| 3184 | xmlEnumerationPtr tree = attrDecl->tree; |
| 3185 | xmlNotationPtr nota; |
| 3186 | |
| 3187 | /* First check that the given NOTATION was declared */ |
| 3188 | nota = xmlGetDtdNotationDesc(doc->intSubset, value); |
| 3189 | if (nota == NULL) |
| 3190 | nota = xmlGetDtdNotationDesc(doc->extSubset, value); |
| 3191 | |
| 3192 | if (nota == NULL) { |
| 3193 | VERROR(ctxt->userData, |
| 3194 | "Value \"%s\" for attribute %s on %s is not a declared Notation\n", |
| 3195 | value, attr->name, elem->name); |
| 3196 | ret = 0; |
| 3197 | } |
| 3198 | |
| 3199 | /* Second, verify that it's among the list */ |
| 3200 | while (tree != NULL) { |
| 3201 | if (xmlStrEqual(tree->name, value)) break; |
| 3202 | tree = tree->next; |
| 3203 | } |
| 3204 | if (tree == NULL) { |
| 3205 | VERROR(ctxt->userData, |
| 3206 | "Value \"%s\" for attribute %s on %s is not among the enumerated notations\n", |
| 3207 | value, attr->name, elem->name); |
| 3208 | ret = 0; |
| 3209 | } |
| 3210 | } |
| 3211 | |
| 3212 | /* Validity Constraint: Enumeration */ |
| 3213 | if (attrDecl->atype == XML_ATTRIBUTE_ENUMERATION) { |
| 3214 | xmlEnumerationPtr tree = attrDecl->tree; |
| 3215 | while (tree != NULL) { |
| 3216 | if (xmlStrEqual(tree->name, value)) break; |
| 3217 | tree = tree->next; |
| 3218 | } |
| 3219 | if (tree == NULL) { |
| 3220 | VERROR(ctxt->userData, |
| 3221 | "Value \"%s\" for attribute %s on %s is not among the enumerated set\n", |
| 3222 | value, attr->name, elem->name); |
| 3223 | ret = 0; |
| 3224 | } |
| 3225 | } |
| 3226 | |
| 3227 | /* Fixed Attribute Default */ |
| 3228 | if ((attrDecl->def == XML_ATTRIBUTE_FIXED) && |
| 3229 | (!xmlStrEqual(attrDecl->defaultValue, value))) { |
| 3230 | VERROR(ctxt->userData, |
| 3231 | "Value for attribute %s on %s must be \"%s\"\n", |
| 3232 | attr->name, elem->name, attrDecl->defaultValue); |
| 3233 | ret = 0; |
| 3234 | } |
| 3235 | |
| 3236 | /* Extra check for the attribute value */ |
| 3237 | ret &= xmlValidateAttributeValue2(ctxt, doc, attr->name, |
| 3238 | attrDecl->atype, value); |
| 3239 | |
| 3240 | return(ret); |
| 3241 | } |
| 3242 | |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3243 | /** |
| 3244 | * xmlValidateSkipIgnorable: |
| 3245 | * @ctxt: the validation context |
| 3246 | * @child: the child list |
| 3247 | * |
| 3248 | * Skip ignorable elements w.r.t. the validation process |
| 3249 | * |
| 3250 | * returns the first element to consider for validation of the content model |
| 3251 | */ |
| 3252 | |
| 3253 | static xmlNodePtr |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3254 | xmlValidateSkipIgnorable(xmlNodePtr child) { |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3255 | while (child != NULL) { |
| 3256 | switch (child->type) { |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3257 | /* These things are ignored (skipped) during validation. */ |
| 3258 | case XML_PI_NODE: |
| 3259 | case XML_COMMENT_NODE: |
| 3260 | case XML_XINCLUDE_START: |
| 3261 | case XML_XINCLUDE_END: |
| 3262 | child = child->next; |
| 3263 | break; |
| 3264 | case XML_TEXT_NODE: |
| 3265 | if (xmlIsBlankNode(child)) |
| 3266 | child = child->next; |
| 3267 | else |
| 3268 | return(child); |
| 3269 | break; |
| 3270 | /* keep current node */ |
| 3271 | default: |
| 3272 | return(child); |
| 3273 | } |
| 3274 | } |
| 3275 | return(child); |
| 3276 | } |
| 3277 | |
| 3278 | /** |
| 3279 | * xmlValidateElementType: |
| 3280 | * @ctxt: the validation context |
| 3281 | * |
| 3282 | * Try to validate the content model of an element internal function |
| 3283 | * |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3284 | * returns 1 if valid or 0 ,-1 in case of error, -2 if an entity |
| 3285 | * reference is found and -3 if the validation succeeded but |
| 3286 | * the content model is not determinist. |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3287 | */ |
| 3288 | |
| 3289 | static int |
| 3290 | xmlValidateElementType(xmlValidCtxtPtr ctxt) { |
| 3291 | int ret = -1; |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3292 | int determinist = 1; |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3293 | |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3294 | NODE = xmlValidateSkipIgnorable(NODE); |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3295 | if ((NODE == NULL) && (CONT == NULL)) |
| 3296 | return(1); |
| 3297 | if ((NODE == NULL) && |
| 3298 | ((CONT->ocur == XML_ELEMENT_CONTENT_MULT) || |
| 3299 | (CONT->ocur == XML_ELEMENT_CONTENT_OPT))) { |
| 3300 | return(1); |
| 3301 | } |
| 3302 | if (CONT == NULL) return(-1); |
Daniel Veillard | 7533cc8 | 2001-04-24 15:52:00 +0000 | [diff] [blame] | 3303 | if ((NODE != NULL) && (NODE->type == XML_ENTITY_REF_NODE)) |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3304 | return(-2); |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3305 | |
| 3306 | /* |
| 3307 | * We arrive here when more states need to be examined |
| 3308 | */ |
| 3309 | cont: |
| 3310 | |
| 3311 | /* |
| 3312 | * We just recovered from a rollback generated by a possible |
| 3313 | * epsilon transition, go directly to the analysis phase |
| 3314 | */ |
| 3315 | if (STATE == ROLLBACK_PARENT) { |
| 3316 | DEBUG_VALID_MSG("restaured parent branch"); |
| 3317 | DEBUG_VALID_STATE(NODE, CONT) |
| 3318 | ret = 1; |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3319 | goto analyze; |
| 3320 | } |
| 3321 | |
| 3322 | DEBUG_VALID_STATE(NODE, CONT) |
| 3323 | /* |
| 3324 | * we may have to save a backup state here. This is the equivalent |
| 3325 | * of handling epsilon transition in NFAs. |
| 3326 | */ |
Daniel Veillard | e62d36c | 2001-05-15 08:53:16 +0000 | [diff] [blame] | 3327 | if ((CONT != NULL) && |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3328 | ((CONT->ocur == XML_ELEMENT_CONTENT_MULT) || |
Daniel Veillard | ca1f172 | 2001-04-20 15:47:35 +0000 | [diff] [blame] | 3329 | (CONT->ocur == XML_ELEMENT_CONTENT_OPT) || |
| 3330 | ((CONT->ocur == XML_ELEMENT_CONTENT_PLUS) && (OCCURENCE)))) { |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3331 | DEBUG_VALID_MSG("saving parent branch"); |
| 3332 | vstateVPush(ctxt, CONT, NODE, DEPTH, OCCURS, ROLLBACK_PARENT); |
| 3333 | } |
| 3334 | |
| 3335 | |
| 3336 | /* |
| 3337 | * Check first if the content matches |
| 3338 | */ |
| 3339 | switch (CONT->type) { |
| 3340 | case XML_ELEMENT_CONTENT_PCDATA: |
| 3341 | if (NODE == NULL) { |
| 3342 | DEBUG_VALID_MSG("pcdata failed no node"); |
| 3343 | ret = 0; |
| 3344 | break; |
| 3345 | } |
| 3346 | if (NODE->type == XML_TEXT_NODE) { |
| 3347 | DEBUG_VALID_MSG("pcdata found, skip to next"); |
| 3348 | /* |
| 3349 | * go to next element in the content model |
| 3350 | * skipping ignorable elems |
| 3351 | */ |
| 3352 | do { |
| 3353 | NODE = NODE->next; |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3354 | NODE = xmlValidateSkipIgnorable(NODE); |
| 3355 | if ((NODE != NULL) && |
| 3356 | (NODE->type == XML_ENTITY_REF_NODE)) |
| 3357 | return(-2); |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3358 | } while ((NODE != NULL) && |
| 3359 | ((NODE->type != XML_ELEMENT_NODE) && |
| 3360 | (NODE->type != XML_TEXT_NODE))); |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3361 | ret = 1; |
| 3362 | break; |
| 3363 | } else { |
| 3364 | DEBUG_VALID_MSG("pcdata failed"); |
| 3365 | ret = 0; |
| 3366 | break; |
| 3367 | } |
| 3368 | break; |
| 3369 | case XML_ELEMENT_CONTENT_ELEMENT: |
| 3370 | if (NODE == NULL) { |
| 3371 | DEBUG_VALID_MSG("element failed no node"); |
| 3372 | ret = 0; |
| 3373 | break; |
| 3374 | } |
Daniel Veillard | 8bdd220 | 2001-06-11 12:47:59 +0000 | [diff] [blame] | 3375 | ret = ((NODE->type == XML_ELEMENT_NODE) && |
| 3376 | (xmlStrEqual(NODE->name, CONT->name))); |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3377 | if (ret == 1) { |
| 3378 | DEBUG_VALID_MSG("element found, skip to next"); |
| 3379 | /* |
| 3380 | * go to next element in the content model |
| 3381 | * skipping ignorable elems |
| 3382 | */ |
| 3383 | do { |
| 3384 | NODE = NODE->next; |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3385 | NODE = xmlValidateSkipIgnorable(NODE); |
| 3386 | if ((NODE != NULL) && |
| 3387 | (NODE->type == XML_ENTITY_REF_NODE)) |
| 3388 | return(-2); |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3389 | } while ((NODE != NULL) && |
| 3390 | ((NODE->type != XML_ELEMENT_NODE) && |
| 3391 | (NODE->type != XML_TEXT_NODE))); |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3392 | } else { |
| 3393 | DEBUG_VALID_MSG("element failed"); |
| 3394 | ret = 0; |
| 3395 | break; |
| 3396 | } |
| 3397 | break; |
| 3398 | case XML_ELEMENT_CONTENT_OR: |
| 3399 | /* |
Daniel Veillard | 8534905 | 2001-04-20 13:48:21 +0000 | [diff] [blame] | 3400 | * Small optimization. |
| 3401 | */ |
| 3402 | if (CONT->c1->type == XML_ELEMENT_CONTENT_ELEMENT) { |
| 3403 | if ((NODE == NULL) || |
| 3404 | (!xmlStrEqual(NODE->name, CONT->c1->name))) { |
| 3405 | DEPTH++; |
| 3406 | CONT = CONT->c2; |
| 3407 | goto cont; |
| 3408 | } |
| 3409 | } |
| 3410 | |
| 3411 | /* |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3412 | * save the second branch 'or' branch |
| 3413 | */ |
| 3414 | DEBUG_VALID_MSG("saving 'or' branch"); |
| 3415 | vstateVPush(ctxt, CONT->c2, NODE, DEPTH + 1, OCCURS, ROLLBACK_OR); |
| 3416 | |
| 3417 | DEPTH++; |
| 3418 | CONT = CONT->c1; |
| 3419 | goto cont; |
| 3420 | case XML_ELEMENT_CONTENT_SEQ: |
Daniel Veillard | 1d04767 | 2001-06-09 16:41:01 +0000 | [diff] [blame] | 3421 | /* |
| 3422 | * Small optimization. |
| 3423 | */ |
| 3424 | if ((CONT->c1->type == XML_ELEMENT_CONTENT_ELEMENT) && |
| 3425 | ((CONT->c1->ocur == XML_ELEMENT_CONTENT_OPT) || |
| 3426 | (CONT->c1->ocur == XML_ELEMENT_CONTENT_MULT))) { |
| 3427 | if ((NODE == NULL) || |
| 3428 | (!xmlStrEqual(NODE->name, CONT->c1->name))) { |
| 3429 | DEPTH++; |
| 3430 | CONT = CONT->c2; |
| 3431 | goto cont; |
| 3432 | } |
| 3433 | } |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3434 | DEPTH++; |
| 3435 | CONT = CONT->c1; |
| 3436 | goto cont; |
| 3437 | } |
| 3438 | |
| 3439 | /* |
| 3440 | * At this point handle going up in the tree |
| 3441 | */ |
| 3442 | if (ret == -1) { |
| 3443 | DEBUG_VALID_MSG("error found returning"); |
| 3444 | return(ret); |
| 3445 | } |
| 3446 | analyze: |
| 3447 | while (CONT != NULL) { |
| 3448 | /* |
| 3449 | * First do the analysis depending on the occurence model at |
| 3450 | * this level. |
| 3451 | */ |
| 3452 | if (ret == 0) { |
| 3453 | switch (CONT->ocur) { |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3454 | xmlNodePtr cur; |
| 3455 | |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3456 | case XML_ELEMENT_CONTENT_ONCE: |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3457 | cur = ctxt->vstate->node; |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3458 | DEBUG_VALID_MSG("Once branch failed, rollback"); |
| 3459 | if (vstateVPop(ctxt) < 0 ) { |
| 3460 | DEBUG_VALID_MSG("exhaustion, failed"); |
| 3461 | return(0); |
| 3462 | } |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3463 | if (cur != ctxt->vstate->node) |
| 3464 | determinist = -3; |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3465 | goto cont; |
| 3466 | case XML_ELEMENT_CONTENT_PLUS: |
| 3467 | if (OCCURENCE == 0) { |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3468 | cur = ctxt->vstate->node; |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3469 | DEBUG_VALID_MSG("Plus branch failed, rollback"); |
| 3470 | if (vstateVPop(ctxt) < 0 ) { |
| 3471 | DEBUG_VALID_MSG("exhaustion, failed"); |
| 3472 | return(0); |
| 3473 | } |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3474 | if (cur != ctxt->vstate->node) |
| 3475 | determinist = -3; |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3476 | goto cont; |
| 3477 | } |
| 3478 | DEBUG_VALID_MSG("Plus branch found"); |
| 3479 | ret = 1; |
| 3480 | break; |
| 3481 | case XML_ELEMENT_CONTENT_MULT: |
| 3482 | #ifdef DEBUG_VALID_ALGO |
| 3483 | if (OCCURENCE == 0) { |
| 3484 | DEBUG_VALID_MSG("Mult branch failed"); |
| 3485 | } else { |
| 3486 | DEBUG_VALID_MSG("Mult branch found"); |
| 3487 | } |
| 3488 | #endif |
| 3489 | ret = 1; |
| 3490 | break; |
| 3491 | case XML_ELEMENT_CONTENT_OPT: |
| 3492 | DEBUG_VALID_MSG("Option branch failed"); |
| 3493 | ret = 1; |
| 3494 | break; |
| 3495 | } |
| 3496 | } else { |
| 3497 | switch (CONT->ocur) { |
| 3498 | case XML_ELEMENT_CONTENT_OPT: |
| 3499 | DEBUG_VALID_MSG("Option branch succeeded"); |
| 3500 | ret = 1; |
| 3501 | break; |
| 3502 | case XML_ELEMENT_CONTENT_ONCE: |
| 3503 | DEBUG_VALID_MSG("Once branch succeeded"); |
| 3504 | ret = 1; |
| 3505 | break; |
| 3506 | case XML_ELEMENT_CONTENT_PLUS: |
| 3507 | if (STATE == ROLLBACK_PARENT) { |
| 3508 | DEBUG_VALID_MSG("Plus branch rollback"); |
| 3509 | ret = 1; |
| 3510 | break; |
| 3511 | } |
| 3512 | if (NODE == NULL) { |
| 3513 | DEBUG_VALID_MSG("Plus branch exhausted"); |
| 3514 | ret = 1; |
| 3515 | break; |
| 3516 | } |
| 3517 | DEBUG_VALID_MSG("Plus branch succeeded, continuing"); |
| 3518 | SET_OCCURENCE; |
| 3519 | goto cont; |
| 3520 | case XML_ELEMENT_CONTENT_MULT: |
| 3521 | if (STATE == ROLLBACK_PARENT) { |
| 3522 | DEBUG_VALID_MSG("Mult branch rollback"); |
| 3523 | ret = 1; |
| 3524 | break; |
| 3525 | } |
| 3526 | if (NODE == NULL) { |
| 3527 | DEBUG_VALID_MSG("Mult branch exhausted"); |
| 3528 | ret = 1; |
| 3529 | break; |
| 3530 | } |
| 3531 | DEBUG_VALID_MSG("Mult branch succeeded, continuing"); |
| 3532 | SET_OCCURENCE; |
| 3533 | goto cont; |
| 3534 | } |
| 3535 | } |
| 3536 | STATE = 0; |
| 3537 | |
| 3538 | /* |
| 3539 | * Then act accordingly at the parent level |
| 3540 | */ |
| 3541 | RESET_OCCURENCE; |
| 3542 | if (CONT->parent == NULL) |
| 3543 | break; |
| 3544 | |
| 3545 | switch (CONT->parent->type) { |
| 3546 | case XML_ELEMENT_CONTENT_PCDATA: |
| 3547 | DEBUG_VALID_MSG("Error: parent pcdata"); |
| 3548 | return(-1); |
| 3549 | case XML_ELEMENT_CONTENT_ELEMENT: |
| 3550 | DEBUG_VALID_MSG("Error: parent element"); |
| 3551 | return(-1); |
| 3552 | case XML_ELEMENT_CONTENT_OR: |
| 3553 | if (ret == 1) { |
| 3554 | DEBUG_VALID_MSG("Or succeeded"); |
| 3555 | CONT = CONT->parent; |
| 3556 | DEPTH--; |
| 3557 | } else { |
| 3558 | DEBUG_VALID_MSG("Or failed"); |
| 3559 | CONT = CONT->parent; |
| 3560 | DEPTH--; |
| 3561 | } |
| 3562 | break; |
| 3563 | case XML_ELEMENT_CONTENT_SEQ: |
| 3564 | if (ret == 0) { |
| 3565 | DEBUG_VALID_MSG("Sequence failed"); |
| 3566 | CONT = CONT->parent; |
| 3567 | DEPTH--; |
| 3568 | } else if (CONT == CONT->parent->c1) { |
| 3569 | DEBUG_VALID_MSG("Sequence testing 2nd branch"); |
| 3570 | CONT = CONT->parent->c2; |
| 3571 | goto cont; |
| 3572 | } else { |
| 3573 | DEBUG_VALID_MSG("Sequence succeeded"); |
| 3574 | CONT = CONT->parent; |
| 3575 | DEPTH--; |
| 3576 | } |
| 3577 | } |
| 3578 | } |
| 3579 | if (NODE != NULL) { |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3580 | xmlNodePtr cur; |
| 3581 | |
| 3582 | cur = ctxt->vstate->node; |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3583 | DEBUG_VALID_MSG("Failed, remaining input, rollback"); |
| 3584 | if (vstateVPop(ctxt) < 0 ) { |
| 3585 | DEBUG_VALID_MSG("exhaustion, failed"); |
| 3586 | return(0); |
| 3587 | } |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3588 | if (cur != ctxt->vstate->node) |
| 3589 | determinist = -3; |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3590 | goto cont; |
| 3591 | } |
| 3592 | if (ret == 0) { |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3593 | xmlNodePtr cur; |
| 3594 | |
| 3595 | cur = ctxt->vstate->node; |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3596 | DEBUG_VALID_MSG("Failure, rollback"); |
| 3597 | if (vstateVPop(ctxt) < 0 ) { |
| 3598 | DEBUG_VALID_MSG("exhaustion, failed"); |
| 3599 | return(0); |
| 3600 | } |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3601 | if (cur != ctxt->vstate->node) |
| 3602 | determinist = -3; |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3603 | goto cont; |
| 3604 | } |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3605 | return(determinist); |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3606 | } |
| 3607 | |
| 3608 | /** |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 3609 | * xmlSprintfElements: |
| 3610 | * @buf: an output buffer |
| 3611 | * @content: An element |
| 3612 | * @glob: 1 if one must print the englobing parenthesis, 0 otherwise |
| 3613 | * |
| 3614 | * This will dump the list of elements to the buffer |
| 3615 | * Intended just for the debug routine |
| 3616 | */ |
| 3617 | static void |
| 3618 | xmlSprintfElements(char *buf, xmlNodePtr node, int glob) { |
| 3619 | xmlNodePtr cur; |
| 3620 | |
| 3621 | if (node == NULL) return; |
| 3622 | if (glob) strcat(buf, "("); |
| 3623 | cur = node; |
| 3624 | while (cur != NULL) { |
| 3625 | switch (cur->type) { |
| 3626 | case XML_ELEMENT_NODE: |
| 3627 | strcat(buf, (char *) cur->name); |
| 3628 | if (cur->next != NULL) |
| 3629 | strcat(buf, " "); |
| 3630 | break; |
| 3631 | case XML_TEXT_NODE: |
| 3632 | if (xmlIsBlankNode(cur)) |
| 3633 | break; |
| 3634 | case XML_CDATA_SECTION_NODE: |
| 3635 | case XML_ENTITY_REF_NODE: |
| 3636 | strcat(buf, "CDATA"); |
| 3637 | if (cur->next != NULL) |
| 3638 | strcat(buf, " "); |
| 3639 | break; |
| 3640 | case XML_ATTRIBUTE_NODE: |
| 3641 | case XML_DOCUMENT_NODE: |
Daniel Veillard | eae522a | 2001-04-23 13:41:34 +0000 | [diff] [blame] | 3642 | #ifdef LIBXML_DOCB_ENABLED |
| 3643 | case XML_DOCB_DOCUMENT_NODE: |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 3644 | #endif |
| 3645 | case XML_HTML_DOCUMENT_NODE: |
| 3646 | case XML_DOCUMENT_TYPE_NODE: |
| 3647 | case XML_DOCUMENT_FRAG_NODE: |
| 3648 | case XML_NOTATION_NODE: |
| 3649 | case XML_NAMESPACE_DECL: |
| 3650 | strcat(buf, "???"); |
| 3651 | if (cur->next != NULL) |
| 3652 | strcat(buf, " "); |
| 3653 | break; |
| 3654 | case XML_ENTITY_NODE: |
| 3655 | case XML_PI_NODE: |
| 3656 | case XML_DTD_NODE: |
| 3657 | case XML_COMMENT_NODE: |
| 3658 | case XML_ELEMENT_DECL: |
| 3659 | case XML_ATTRIBUTE_DECL: |
| 3660 | case XML_ENTITY_DECL: |
| 3661 | case XML_XINCLUDE_START: |
| 3662 | case XML_XINCLUDE_END: |
| 3663 | break; |
| 3664 | } |
| 3665 | cur = cur->next; |
| 3666 | } |
| 3667 | if (glob) strcat(buf, ")"); |
| 3668 | } |
| 3669 | |
| 3670 | /** |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3671 | * xmlValidateElementContent: |
| 3672 | * @ctxt: the validation context |
| 3673 | * @child: the child list |
| 3674 | * @cont: pointer to the content declaration |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 3675 | * @warn: emit the error message |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3676 | * |
| 3677 | * Try to validate the content model of an element |
| 3678 | * |
| 3679 | * returns 1 if valid or 0 if not and -1 in case of error |
| 3680 | */ |
| 3681 | |
| 3682 | static int |
| 3683 | xmlValidateElementContent(xmlValidCtxtPtr ctxt, xmlNodePtr child, |
Daniel Veillard | 7533cc8 | 2001-04-24 15:52:00 +0000 | [diff] [blame] | 3684 | xmlElementContentPtr cont, int warn, const xmlChar *name) { |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3685 | int ret; |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 3686 | xmlNodePtr repl = NULL, last = NULL, cur, tmp; |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3687 | |
| 3688 | /* |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3689 | * Allocate the stack |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3690 | */ |
| 3691 | ctxt->vstateMax = 8; |
| 3692 | ctxt->vstateTab = (xmlValidState *) xmlMalloc( |
| 3693 | ctxt->vstateMax * sizeof(ctxt->vstateTab[0])); |
| 3694 | if (ctxt->vstateTab == NULL) { |
| 3695 | xmlGenericError(xmlGenericErrorContext, |
| 3696 | "malloc failed !n"); |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3697 | return(-1); |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3698 | } |
| 3699 | /* |
| 3700 | * The first entry in the stack is reserved to the current state |
| 3701 | */ |
Daniel Veillard | 61b33d5 | 2001-04-24 13:55:12 +0000 | [diff] [blame] | 3702 | ctxt->nodeTab = NULL; |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3703 | ctxt->vstate = &ctxt->vstateTab[0]; |
| 3704 | ctxt->vstateNr = 1; |
| 3705 | CONT = cont; |
| 3706 | NODE = child; |
| 3707 | DEPTH = 0; |
| 3708 | OCCURS = 0; |
| 3709 | STATE = 0; |
| 3710 | ret = xmlValidateElementType(ctxt); |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3711 | if ((ret == -3) && (warn)) { |
| 3712 | VWARNING(ctxt->userData, |
| 3713 | "Element %s content model is ambiguous\n", name); |
| 3714 | } else if (ret == -2) { |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3715 | /* |
| 3716 | * An entities reference appeared at this level. |
| 3717 | * Buid a minimal representation of this node content |
| 3718 | * sufficient to run the validation process on it |
| 3719 | */ |
| 3720 | DEBUG_VALID_MSG("Found an entity reference, linearizing"); |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 3721 | cur = child; |
| 3722 | while (cur != NULL) { |
| 3723 | switch (cur->type) { |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3724 | case XML_ENTITY_REF_NODE: |
| 3725 | /* |
| 3726 | * Push the current node to be able to roll back |
| 3727 | * and process within the entity |
| 3728 | */ |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 3729 | if ((cur->children != NULL) && |
| 3730 | (cur->children->children != NULL)) { |
| 3731 | nodeVPush(ctxt, cur); |
| 3732 | cur = cur->children->children; |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3733 | continue; |
| 3734 | } |
Daniel Veillard | 64b98c0 | 2001-06-17 17:20:21 +0000 | [diff] [blame] | 3735 | break; |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3736 | case XML_TEXT_NODE: |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 3737 | if (xmlIsBlankNode(cur)) |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3738 | break; |
| 3739 | case XML_ELEMENT_NODE: |
| 3740 | /* |
| 3741 | * Allocate a new node and minimally fills in |
| 3742 | * what's required |
| 3743 | */ |
| 3744 | tmp = (xmlNodePtr) xmlMalloc(sizeof(xmlNode)); |
| 3745 | if (tmp == NULL) { |
| 3746 | xmlGenericError(xmlGenericErrorContext, |
| 3747 | "xmlValidateElementContent : malloc failed\n"); |
| 3748 | xmlFreeNodeList(repl); |
| 3749 | ret = -1; |
| 3750 | goto done; |
| 3751 | } |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 3752 | tmp->type = cur->type; |
| 3753 | tmp->name = cur->name; |
| 3754 | tmp->ns = cur->ns; |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3755 | tmp->next = NULL; |
| 3756 | if (repl == NULL) |
| 3757 | repl = last = tmp; |
| 3758 | else { |
| 3759 | last->next = tmp; |
| 3760 | last = tmp; |
| 3761 | } |
| 3762 | break; |
| 3763 | default: |
| 3764 | break; |
| 3765 | } |
| 3766 | /* |
| 3767 | * Switch to next element |
| 3768 | */ |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 3769 | cur = cur->next; |
| 3770 | while (cur == NULL) { |
| 3771 | cur = nodeVPop(ctxt); |
| 3772 | if (cur == NULL) |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3773 | break; |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 3774 | cur = cur->next; |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3775 | } |
| 3776 | } |
| 3777 | |
| 3778 | /* |
| 3779 | * Relaunch the validation |
| 3780 | */ |
| 3781 | ctxt->vstate = &ctxt->vstateTab[0]; |
| 3782 | ctxt->vstateNr = 1; |
| 3783 | CONT = cont; |
| 3784 | NODE = repl; |
| 3785 | DEPTH = 0; |
| 3786 | OCCURS = 0; |
| 3787 | STATE = 0; |
| 3788 | ret = xmlValidateElementType(ctxt); |
| 3789 | } |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3790 | if ((warn) && ((ret != 1) && (ret != -3))) { |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 3791 | char expr[5000]; |
| 3792 | char list[5000]; |
| 3793 | |
| 3794 | expr[0] = 0; |
| 3795 | xmlSprintfElementContent(expr, cont, 1); |
| 3796 | list[0] = 0; |
| 3797 | if (repl != NULL) |
| 3798 | xmlSprintfElements(list, repl, 1); |
| 3799 | else |
| 3800 | xmlSprintfElements(list, child, 1); |
| 3801 | |
Daniel Veillard | 7533cc8 | 2001-04-24 15:52:00 +0000 | [diff] [blame] | 3802 | if (name != NULL) { |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 3803 | VERROR(ctxt->userData, |
| 3804 | "Element %s content doesn't follow the Dtd\nExpecting %s, got %s\n", |
Daniel Veillard | 7533cc8 | 2001-04-24 15:52:00 +0000 | [diff] [blame] | 3805 | name, expr, list); |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 3806 | } else { |
| 3807 | VERROR(ctxt->userData, |
| 3808 | "Element content doesn't follow the Dtd\nExpecting %s, got %s\n", |
| 3809 | expr, list); |
| 3810 | } |
| 3811 | ret = 0; |
| 3812 | } |
Daniel Veillard | 4de4d3b | 2001-05-07 20:50:47 +0000 | [diff] [blame] | 3813 | if (ret == -3) |
| 3814 | ret = 1; |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3815 | |
| 3816 | |
| 3817 | done: |
| 3818 | /* |
| 3819 | * Deallocate the copy if done, and free up the validation stack |
| 3820 | */ |
| 3821 | while (repl != NULL) { |
| 3822 | tmp = repl->next; |
| 3823 | xmlFree(repl); |
| 3824 | repl = tmp; |
| 3825 | } |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3826 | ctxt->vstateMax = 0; |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 3827 | if (ctxt->vstateTab != NULL) { |
| 3828 | xmlFree(ctxt->vstateTab); |
| 3829 | ctxt->vstateTab = NULL; |
| 3830 | } |
| 3831 | ctxt->nodeMax = 0; |
| 3832 | if (ctxt->nodeTab != NULL) { |
| 3833 | xmlFree(ctxt->nodeTab); |
| 3834 | ctxt->nodeTab = NULL; |
| 3835 | } |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3836 | return(ret); |
Daniel Veillard | 1c14b8d | 2001-04-21 10:28:59 +0000 | [diff] [blame] | 3837 | |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3838 | } |
Daniel Veillard | dab4cb3 | 2001-04-20 13:03:48 +0000 | [diff] [blame] | 3839 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 3840 | /** |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 3841 | * xmlValidateOneElement: |
| 3842 | * @ctxt: the validation context |
| 3843 | * @doc: a document instance |
| 3844 | * @elem: an element instance |
| 3845 | * |
| 3846 | * Try to validate a single element and it's attributes, |
| 3847 | * basically it does the following checks as described by the |
| 3848 | * XML-1.0 recommendation: |
| 3849 | * - [ VC: Element Valid ] |
| 3850 | * - [ VC: Required Attribute ] |
| 3851 | * Then call xmlValidateOneAttribute() for each attribute present. |
| 3852 | * |
| 3853 | * The ID/IDREF checkings are done separately |
| 3854 | * |
| 3855 | * returns 1 if valid or 0 otherwise |
| 3856 | */ |
| 3857 | |
| 3858 | int |
| 3859 | xmlValidateOneElement(xmlValidCtxtPtr ctxt, xmlDocPtr doc, |
| 3860 | xmlNodePtr elem) { |
| 3861 | xmlElementPtr elemDecl = NULL; |
| 3862 | xmlElementContentPtr cont; |
| 3863 | xmlAttributePtr attr; |
| 3864 | xmlNodePtr child; |
| 3865 | int ret = 1; |
| 3866 | const xmlChar *name; |
| 3867 | |
| 3868 | CHECK_DTD; |
| 3869 | |
| 3870 | if (elem == NULL) return(0); |
| 3871 | if (elem->type == XML_TEXT_NODE) { |
| 3872 | } |
| 3873 | switch (elem->type) { |
| 3874 | case XML_ATTRIBUTE_NODE: |
| 3875 | VERROR(ctxt->userData, |
| 3876 | "Attribute element not expected here\n"); |
| 3877 | return(0); |
| 3878 | case XML_TEXT_NODE: |
| 3879 | if (elem->children != NULL) { |
| 3880 | VERROR(ctxt->userData, "Text element has childs !\n"); |
| 3881 | return(0); |
| 3882 | } |
| 3883 | if (elem->properties != NULL) { |
| 3884 | VERROR(ctxt->userData, "Text element has attributes !\n"); |
| 3885 | return(0); |
| 3886 | } |
| 3887 | if (elem->ns != NULL) { |
| 3888 | VERROR(ctxt->userData, "Text element has namespace !\n"); |
| 3889 | return(0); |
| 3890 | } |
| 3891 | if (elem->nsDef != NULL) { |
| 3892 | VERROR(ctxt->userData, |
| 3893 | "Text element carries namespace definitions !\n"); |
| 3894 | return(0); |
| 3895 | } |
| 3896 | if (elem->content == NULL) { |
| 3897 | VERROR(ctxt->userData, |
| 3898 | "Text element has no content !\n"); |
| 3899 | return(0); |
| 3900 | } |
| 3901 | return(1); |
| 3902 | case XML_XINCLUDE_START: |
| 3903 | case XML_XINCLUDE_END: |
| 3904 | return(1); |
| 3905 | case XML_CDATA_SECTION_NODE: |
| 3906 | case XML_ENTITY_REF_NODE: |
| 3907 | case XML_PI_NODE: |
| 3908 | case XML_COMMENT_NODE: |
| 3909 | return(1); |
| 3910 | case XML_ENTITY_NODE: |
| 3911 | VERROR(ctxt->userData, |
| 3912 | "Entity element not expected here\n"); |
| 3913 | return(0); |
| 3914 | case XML_NOTATION_NODE: |
| 3915 | VERROR(ctxt->userData, |
| 3916 | "Notation element not expected here\n"); |
| 3917 | return(0); |
| 3918 | case XML_DOCUMENT_NODE: |
| 3919 | case XML_DOCUMENT_TYPE_NODE: |
| 3920 | case XML_DOCUMENT_FRAG_NODE: |
| 3921 | VERROR(ctxt->userData, |
| 3922 | "Document element not expected here\n"); |
| 3923 | return(0); |
| 3924 | case XML_HTML_DOCUMENT_NODE: |
| 3925 | VERROR(ctxt->userData, |
| 3926 | "\n"); |
| 3927 | return(0); |
| 3928 | case XML_ELEMENT_NODE: |
| 3929 | break; |
| 3930 | default: |
| 3931 | VERROR(ctxt->userData, |
| 3932 | "unknown element type %d\n", elem->type); |
| 3933 | return(0); |
| 3934 | } |
| 3935 | if (elem->name == NULL) return(0); |
| 3936 | |
| 3937 | /* |
| 3938 | * Fetch the declaration for the qualified name |
| 3939 | */ |
| 3940 | if ((elem->ns != NULL) && (elem->ns->prefix != NULL)) { |
| 3941 | elemDecl = xmlGetDtdQElementDesc(doc->intSubset, |
| 3942 | elem->name, elem->ns->prefix); |
| 3943 | if ((elemDecl == NULL) && (doc->extSubset != NULL)) |
| 3944 | elemDecl = xmlGetDtdQElementDesc(doc->extSubset, |
| 3945 | elem->name, elem->ns->prefix); |
| 3946 | } |
| 3947 | |
| 3948 | /* |
| 3949 | * Fetch the declaration for the non qualified name |
| 3950 | */ |
| 3951 | if (elemDecl == NULL) { |
| 3952 | elemDecl = xmlGetDtdElementDesc(doc->intSubset, elem->name); |
| 3953 | if ((elemDecl == NULL) && (doc->extSubset != NULL)) |
| 3954 | elemDecl = xmlGetDtdElementDesc(doc->extSubset, elem->name); |
| 3955 | } |
| 3956 | if (elemDecl == NULL) { |
| 3957 | VERROR(ctxt->userData, "No declaration for element %s\n", |
| 3958 | elem->name); |
| 3959 | return(0); |
| 3960 | } |
| 3961 | |
| 3962 | /* Check taht the element content matches the definition */ |
| 3963 | switch (elemDecl->etype) { |
Daniel Veillard | a10efa8 | 2001-04-18 13:09:01 +0000 | [diff] [blame] | 3964 | case XML_ELEMENT_TYPE_UNDEFINED: |
| 3965 | VERROR(ctxt->userData, "No declaration for element %s\n", |
| 3966 | elem->name); |
| 3967 | return(0); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 3968 | case XML_ELEMENT_TYPE_EMPTY: |
| 3969 | if (elem->children != NULL) { |
| 3970 | VERROR(ctxt->userData, |
| 3971 | "Element %s was declared EMPTY this one has content\n", |
| 3972 | elem->name); |
| 3973 | ret = 0; |
| 3974 | } |
| 3975 | break; |
| 3976 | case XML_ELEMENT_TYPE_ANY: |
| 3977 | /* I don't think anything is required then */ |
| 3978 | break; |
| 3979 | case XML_ELEMENT_TYPE_MIXED: |
| 3980 | /* Hum, this start to get messy */ |
| 3981 | child = elem->children; |
| 3982 | while (child != NULL) { |
| 3983 | if (child->type == XML_ELEMENT_NODE) { |
| 3984 | name = child->name; |
| 3985 | if ((child->ns != NULL) && (child->ns->prefix != NULL)) { |
| 3986 | xmlChar qname[500]; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 3987 | snprintf((char *) qname, sizeof(qname), "%s:%s", |
| 3988 | child->ns->prefix, child->name); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 3989 | qname[sizeof(qname) - 1] = 0; |
| 3990 | cont = elemDecl->content; |
| 3991 | while (cont != NULL) { |
| 3992 | if (cont->type == XML_ELEMENT_CONTENT_ELEMENT) { |
| 3993 | if (xmlStrEqual(cont->name, qname)) break; |
| 3994 | } else if ((cont->type == XML_ELEMENT_CONTENT_OR) && |
| 3995 | (cont->c1 != NULL) && |
| 3996 | (cont->c1->type == XML_ELEMENT_CONTENT_ELEMENT)){ |
| 3997 | if (xmlStrEqual(cont->c1->name, qname)) break; |
| 3998 | } else if ((cont->type != XML_ELEMENT_CONTENT_OR) || |
| 3999 | (cont->c1 == NULL) || |
| 4000 | (cont->c1->type != XML_ELEMENT_CONTENT_PCDATA)){ |
| 4001 | /* Internal error !!! */ |
| 4002 | xmlGenericError(xmlGenericErrorContext, |
| 4003 | "Internal: MIXED struct bad\n"); |
| 4004 | break; |
| 4005 | } |
| 4006 | cont = cont->c2; |
| 4007 | } |
| 4008 | if (cont != NULL) |
| 4009 | goto child_ok; |
| 4010 | } |
| 4011 | cont = elemDecl->content; |
| 4012 | while (cont != NULL) { |
| 4013 | if (cont->type == XML_ELEMENT_CONTENT_ELEMENT) { |
| 4014 | if (xmlStrEqual(cont->name, name)) break; |
| 4015 | } else if ((cont->type == XML_ELEMENT_CONTENT_OR) && |
| 4016 | (cont->c1 != NULL) && |
| 4017 | (cont->c1->type == XML_ELEMENT_CONTENT_ELEMENT)) { |
| 4018 | if (xmlStrEqual(cont->c1->name, name)) break; |
| 4019 | } else if ((cont->type != XML_ELEMENT_CONTENT_OR) || |
| 4020 | (cont->c1 == NULL) || |
| 4021 | (cont->c1->type != XML_ELEMENT_CONTENT_PCDATA)) { |
| 4022 | /* Internal error !!! */ |
| 4023 | xmlGenericError(xmlGenericErrorContext, |
| 4024 | "Internal: MIXED struct bad\n"); |
| 4025 | break; |
| 4026 | } |
| 4027 | cont = cont->c2; |
| 4028 | } |
| 4029 | if (cont == NULL) { |
| 4030 | VERROR(ctxt->userData, |
| 4031 | "Element %s is not declared in %s list of possible childs\n", |
| 4032 | name, elem->name); |
| 4033 | ret = 0; |
| 4034 | } |
| 4035 | } |
| 4036 | child_ok: |
| 4037 | child = child->next; |
| 4038 | } |
| 4039 | break; |
| 4040 | case XML_ELEMENT_TYPE_ELEMENT: |
| 4041 | child = elem->children; |
| 4042 | cont = elemDecl->content; |
Daniel Veillard | 7533cc8 | 2001-04-24 15:52:00 +0000 | [diff] [blame] | 4043 | ret = xmlValidateElementContent(ctxt, child, cont, 1, elem->name); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 4044 | break; |
| 4045 | } |
| 4046 | |
| 4047 | /* [ VC: Required Attribute ] */ |
| 4048 | attr = elemDecl->attributes; |
| 4049 | while (attr != NULL) { |
| 4050 | if (attr->def == XML_ATTRIBUTE_REQUIRED) { |
| 4051 | xmlAttrPtr attrib; |
| 4052 | int qualified = -1; |
| 4053 | |
| 4054 | attrib = elem->properties; |
| 4055 | while (attrib != NULL) { |
| 4056 | if (xmlStrEqual(attrib->name, attr->name)) { |
| 4057 | if (attr->prefix != NULL) { |
| 4058 | xmlNsPtr nameSpace = attrib->ns; |
| 4059 | |
| 4060 | if (nameSpace == NULL) |
| 4061 | nameSpace = elem->ns; |
| 4062 | /* |
| 4063 | * qualified names handling is problematic, having a |
| 4064 | * different prefix should be possible but DTDs don't |
| 4065 | * allow to define the URI instead of the prefix :-( |
| 4066 | */ |
| 4067 | if (nameSpace == NULL) { |
| 4068 | if (qualified < 0) |
| 4069 | qualified = 0; |
Daniel Veillard | 34b1b3a | 2001-04-21 14:16:10 +0000 | [diff] [blame] | 4070 | } else if (!xmlStrEqual(nameSpace->prefix, |
| 4071 | attr->prefix)) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 4072 | if (qualified < 1) |
| 4073 | qualified = 1; |
| 4074 | } else |
| 4075 | goto found; |
| 4076 | } else { |
| 4077 | /* |
| 4078 | * We should allow applications to define namespaces |
| 4079 | * for their application even if the DTD doesn't |
| 4080 | * carry one, otherwise, basically we would always |
| 4081 | * break. |
| 4082 | */ |
| 4083 | goto found; |
| 4084 | } |
| 4085 | } |
| 4086 | attrib = attrib->next; |
| 4087 | } |
| 4088 | if (qualified == -1) { |
| 4089 | if (attr->prefix == NULL) { |
| 4090 | VERROR(ctxt->userData, |
| 4091 | "Element %s doesn't carry attribute %s\n", |
| 4092 | elem->name, attr->name); |
| 4093 | ret = 0; |
| 4094 | } else { |
| 4095 | VERROR(ctxt->userData, |
| 4096 | "Element %s doesn't carry attribute %s:%s\n", |
| 4097 | elem->name, attr->prefix,attr->name); |
| 4098 | ret = 0; |
| 4099 | } |
| 4100 | } else if (qualified == 0) { |
| 4101 | VWARNING(ctxt->userData, |
| 4102 | "Element %s required attribute %s:%s has no prefix\n", |
| 4103 | elem->name, attr->prefix,attr->name); |
| 4104 | } else if (qualified == 1) { |
| 4105 | VWARNING(ctxt->userData, |
| 4106 | "Element %s required attribute %s:%s has different prefix\n", |
| 4107 | elem->name, attr->prefix,attr->name); |
| 4108 | } |
| 4109 | } |
| 4110 | found: |
| 4111 | attr = attr->nexth; |
| 4112 | } |
| 4113 | return(ret); |
| 4114 | } |
| 4115 | |
| 4116 | /** |
| 4117 | * xmlValidateRoot: |
| 4118 | * @ctxt: the validation context |
| 4119 | * @doc: a document instance |
| 4120 | * |
| 4121 | * Try to validate a the root element |
| 4122 | * basically it does the following check as described by the |
| 4123 | * XML-1.0 recommendation: |
| 4124 | * - [ VC: Root Element Type ] |
| 4125 | * it doesn't try to recurse or apply other check to the element |
| 4126 | * |
| 4127 | * returns 1 if valid or 0 otherwise |
| 4128 | */ |
| 4129 | |
| 4130 | int |
| 4131 | xmlValidateRoot(xmlValidCtxtPtr ctxt, xmlDocPtr doc) { |
| 4132 | xmlNodePtr root; |
| 4133 | if (doc == NULL) return(0); |
| 4134 | |
| 4135 | root = xmlDocGetRootElement(doc); |
| 4136 | if ((root == NULL) || (root->name == NULL)) { |
| 4137 | VERROR(ctxt->userData, "Not valid: no root element\n"); |
| 4138 | return(0); |
| 4139 | } |
| 4140 | |
| 4141 | /* |
| 4142 | * When doing post validation against a separate DTD, those may |
| 4143 | * no internal subset has been generated |
| 4144 | */ |
| 4145 | if ((doc->intSubset != NULL) && |
| 4146 | (doc->intSubset->name != NULL)) { |
| 4147 | /* |
| 4148 | * Check first the document root against the NQName |
| 4149 | */ |
| 4150 | if (!xmlStrEqual(doc->intSubset->name, root->name)) { |
| 4151 | if ((root->ns != NULL) && (root->ns->prefix != NULL)) { |
| 4152 | xmlChar qname[500]; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 4153 | snprintf((char *) qname, sizeof(qname), "%s:%s", |
| 4154 | root->ns->prefix, root->name); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 4155 | qname[sizeof(qname) - 1] = 0; |
| 4156 | if (xmlStrEqual(doc->intSubset->name, qname)) |
| 4157 | goto name_ok; |
| 4158 | } |
| 4159 | if ((xmlStrEqual(doc->intSubset->name, BAD_CAST "HTML")) && |
| 4160 | (xmlStrEqual(root->name, BAD_CAST "html"))) |
| 4161 | goto name_ok; |
| 4162 | VERROR(ctxt->userData, |
| 4163 | "Not valid: root and DtD name do not match '%s' and '%s'\n", |
| 4164 | root->name, doc->intSubset->name); |
| 4165 | return(0); |
| 4166 | |
| 4167 | } |
| 4168 | } |
| 4169 | name_ok: |
| 4170 | return(1); |
| 4171 | } |
| 4172 | |
| 4173 | |
| 4174 | /** |
| 4175 | * xmlValidateElement: |
| 4176 | * @ctxt: the validation context |
| 4177 | * @doc: a document instance |
| 4178 | * @elem: an element instance |
| 4179 | * |
| 4180 | * Try to validate the subtree under an element |
| 4181 | * |
| 4182 | * returns 1 if valid or 0 otherwise |
| 4183 | */ |
| 4184 | |
| 4185 | int |
| 4186 | xmlValidateElement(xmlValidCtxtPtr ctxt, xmlDocPtr doc, xmlNodePtr elem) { |
| 4187 | xmlNodePtr child; |
| 4188 | xmlAttrPtr attr; |
| 4189 | xmlChar *value; |
| 4190 | int ret = 1; |
| 4191 | |
| 4192 | if (elem == NULL) return(0); |
| 4193 | |
| 4194 | /* |
| 4195 | * XInclude elements were added after parsing in the infoset, |
| 4196 | * they don't really mean anything validation wise. |
| 4197 | */ |
| 4198 | if ((elem->type == XML_XINCLUDE_START) || |
| 4199 | (elem->type == XML_XINCLUDE_END)) |
| 4200 | return(1); |
| 4201 | |
| 4202 | CHECK_DTD; |
| 4203 | |
| 4204 | ret &= xmlValidateOneElement(ctxt, doc, elem); |
| 4205 | attr = elem->properties; |
| 4206 | while(attr != NULL) { |
| 4207 | value = xmlNodeListGetString(doc, attr->children, 0); |
| 4208 | ret &= xmlValidateOneAttribute(ctxt, doc, elem, attr, value); |
| 4209 | if (value != NULL) |
| 4210 | xmlFree(value); |
| 4211 | attr= attr->next; |
| 4212 | } |
| 4213 | child = elem->children; |
| 4214 | while (child != NULL) { |
| 4215 | ret &= xmlValidateElement(ctxt, doc, child); |
| 4216 | child = child->next; |
| 4217 | } |
| 4218 | |
| 4219 | return(ret); |
| 4220 | } |
| 4221 | |
Daniel Veillard | 8730c56 | 2001-02-26 10:49:57 +0000 | [diff] [blame] | 4222 | /** |
| 4223 | * xmlValidateRef: |
| 4224 | * @ref: A reference to be validated |
| 4225 | * @ctxt: Validation context |
| 4226 | * @name: Name of ID we are searching for |
| 4227 | * |
| 4228 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 4229 | static void |
Daniel Veillard | 8730c56 | 2001-02-26 10:49:57 +0000 | [diff] [blame] | 4230 | xmlValidateRef(xmlRefPtr ref, xmlValidCtxtPtr ctxt, |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 4231 | const xmlChar *name) { |
| 4232 | xmlAttrPtr id; |
| 4233 | xmlAttrPtr attr; |
| 4234 | |
| 4235 | if (ref == NULL) |
| 4236 | return; |
| 4237 | attr = ref->attr; |
| 4238 | if (attr == NULL) |
| 4239 | return; |
| 4240 | if (attr->atype == XML_ATTRIBUTE_IDREF) { |
| 4241 | id = xmlGetID(ctxt->doc, name); |
| 4242 | if (id == NULL) { |
| 4243 | VERROR(ctxt->userData, |
| 4244 | "IDREF attribute %s reference an unknown ID \"%s\"\n", |
| 4245 | attr->name, name); |
| 4246 | ctxt->valid = 0; |
| 4247 | } |
| 4248 | } else if (attr->atype == XML_ATTRIBUTE_IDREFS) { |
| 4249 | xmlChar *dup, *str = NULL, *cur, save; |
| 4250 | |
| 4251 | dup = xmlStrdup(name); |
| 4252 | if (dup == NULL) { |
| 4253 | ctxt->valid = 0; |
| 4254 | return; |
| 4255 | } |
| 4256 | cur = dup; |
| 4257 | while (*cur != 0) { |
| 4258 | str = cur; |
| 4259 | while ((*cur != 0) && (!IS_BLANK(*cur))) cur++; |
| 4260 | save = *cur; |
| 4261 | *cur = 0; |
| 4262 | id = xmlGetID(ctxt->doc, str); |
| 4263 | if (id == NULL) { |
| 4264 | VERROR(ctxt->userData, |
| 4265 | "IDREFS attribute %s reference an unknown ID \"%s\"\n", |
| 4266 | attr->name, str); |
| 4267 | ctxt->valid = 0; |
| 4268 | } |
| 4269 | if (save == 0) |
| 4270 | break; |
| 4271 | *cur = save; |
| 4272 | while (IS_BLANK(*cur)) cur++; |
| 4273 | } |
| 4274 | xmlFree(dup); |
| 4275 | } |
| 4276 | } |
| 4277 | |
| 4278 | /** |
Daniel Veillard | 8730c56 | 2001-02-26 10:49:57 +0000 | [diff] [blame] | 4279 | * xmlWalkValidateList: |
| 4280 | * @data: Contents of current link |
| 4281 | * @user: Value supplied by the user |
| 4282 | * |
| 4283 | * Return 0 to abort the walk or 1 to continue |
| 4284 | */ |
| 4285 | static int |
| 4286 | xmlWalkValidateList(const void *data, const void *user) |
| 4287 | { |
| 4288 | xmlValidateMemoPtr memo = (xmlValidateMemoPtr)user; |
| 4289 | xmlValidateRef((xmlRefPtr)data, memo->ctxt, memo->name); |
| 4290 | return 1; |
| 4291 | } |
| 4292 | |
| 4293 | /** |
| 4294 | * xmlValidateCheckRefCallback: |
| 4295 | * @ref_list: List of references |
| 4296 | * @ctxt: Validation context |
| 4297 | * @name: Name of ID we are searching for |
| 4298 | * |
| 4299 | */ |
| 4300 | static void |
| 4301 | xmlValidateCheckRefCallback(xmlListPtr ref_list, xmlValidCtxtPtr ctxt, |
| 4302 | const xmlChar *name) { |
| 4303 | xmlValidateMemo memo; |
| 4304 | |
| 4305 | if (ref_list == NULL) |
| 4306 | return; |
| 4307 | memo.ctxt = ctxt; |
| 4308 | memo.name = name; |
| 4309 | |
| 4310 | xmlListWalk(ref_list, xmlWalkValidateList, &memo); |
| 4311 | |
| 4312 | } |
| 4313 | |
| 4314 | /** |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 4315 | * xmlValidateDocumentFinal: |
| 4316 | * @ctxt: the validation context |
| 4317 | * @doc: a document instance |
| 4318 | * |
| 4319 | * Does the final step for the document validation once all the |
| 4320 | * incremental validation steps have been completed |
| 4321 | * |
| 4322 | * basically it does the following checks described by the XML Rec |
| 4323 | * |
| 4324 | * |
| 4325 | * returns 1 if valid or 0 otherwise |
| 4326 | */ |
| 4327 | |
| 4328 | int |
| 4329 | xmlValidateDocumentFinal(xmlValidCtxtPtr ctxt, xmlDocPtr doc) { |
| 4330 | xmlRefTablePtr table; |
| 4331 | |
| 4332 | if (doc == NULL) { |
| 4333 | xmlGenericError(xmlGenericErrorContext, |
| 4334 | "xmlValidateDocumentFinal: doc == NULL\n"); |
| 4335 | return(0); |
| 4336 | } |
| 4337 | |
| 4338 | /* |
| 4339 | * Check all the NOTATION/NOTATIONS attributes |
| 4340 | */ |
| 4341 | /* |
| 4342 | * Check all the ENTITY/ENTITIES attributes definition for validity |
| 4343 | */ |
| 4344 | /* |
| 4345 | * Check all the IDREF/IDREFS attributes definition for validity |
| 4346 | */ |
| 4347 | table = (xmlRefTablePtr) doc->refs; |
| 4348 | ctxt->doc = doc; |
| 4349 | ctxt->valid = 1; |
| 4350 | xmlHashScan(table, (xmlHashScanner) xmlValidateCheckRefCallback, ctxt); |
| 4351 | return(ctxt->valid); |
| 4352 | } |
| 4353 | |
| 4354 | /** |
| 4355 | * xmlValidateDtd: |
| 4356 | * @ctxt: the validation context |
| 4357 | * @doc: a document instance |
| 4358 | * @dtd: a dtd instance |
| 4359 | * |
| 4360 | * Try to validate the document against the dtd instance |
| 4361 | * |
| 4362 | * basically it does check all the definitions in the DtD. |
| 4363 | * |
| 4364 | * returns 1 if valid or 0 otherwise |
| 4365 | */ |
| 4366 | |
| 4367 | int |
| 4368 | xmlValidateDtd(xmlValidCtxtPtr ctxt, xmlDocPtr doc, xmlDtdPtr dtd) { |
| 4369 | int ret; |
| 4370 | xmlDtdPtr oldExt; |
| 4371 | xmlNodePtr root; |
| 4372 | |
| 4373 | if (dtd == NULL) return(0); |
| 4374 | if (doc == NULL) return(0); |
| 4375 | oldExt = doc->extSubset; |
| 4376 | doc->extSubset = dtd; |
| 4377 | ret = xmlValidateRoot(ctxt, doc); |
| 4378 | if (ret == 0) { |
| 4379 | doc->extSubset = oldExt; |
| 4380 | return(ret); |
| 4381 | } |
| 4382 | if (doc->ids != NULL) { |
| 4383 | xmlFreeIDTable(doc->ids); |
| 4384 | doc->ids = NULL; |
| 4385 | } |
| 4386 | if (doc->refs != NULL) { |
| 4387 | xmlFreeRefTable(doc->refs); |
| 4388 | doc->refs = NULL; |
| 4389 | } |
| 4390 | root = xmlDocGetRootElement(doc); |
| 4391 | ret = xmlValidateElement(ctxt, doc, root); |
| 4392 | ret &= xmlValidateDocumentFinal(ctxt, doc); |
| 4393 | doc->extSubset = oldExt; |
| 4394 | return(ret); |
| 4395 | } |
| 4396 | |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 4397 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 4398 | xmlValidateAttributeCallback(xmlAttributePtr cur, xmlValidCtxtPtr ctxt, |
Daniel Veillard | c86a4fa | 2001-03-26 16:28:29 +0000 | [diff] [blame] | 4399 | const xmlChar *name ATTRIBUTE_UNUSED) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 4400 | if (cur == NULL) |
| 4401 | return; |
| 4402 | switch (cur->atype) { |
| 4403 | case XML_ATTRIBUTE_CDATA: |
| 4404 | case XML_ATTRIBUTE_ID: |
| 4405 | case XML_ATTRIBUTE_IDREF : |
| 4406 | case XML_ATTRIBUTE_IDREFS: |
| 4407 | case XML_ATTRIBUTE_NMTOKEN: |
| 4408 | case XML_ATTRIBUTE_NMTOKENS: |
| 4409 | case XML_ATTRIBUTE_ENUMERATION: |
| 4410 | break; |
| 4411 | case XML_ATTRIBUTE_ENTITY: |
| 4412 | case XML_ATTRIBUTE_ENTITIES: |
| 4413 | case XML_ATTRIBUTE_NOTATION: |
| 4414 | if (cur->defaultValue != NULL) { |
| 4415 | ctxt->valid &= xmlValidateAttributeValue2(ctxt, ctxt->doc, |
| 4416 | cur->name, cur->atype, cur->defaultValue); |
| 4417 | } |
| 4418 | if (cur->tree != NULL) { |
| 4419 | xmlEnumerationPtr tree = cur->tree; |
| 4420 | while (tree != NULL) { |
| 4421 | ctxt->valid &= xmlValidateAttributeValue2(ctxt, ctxt->doc, |
| 4422 | cur->name, cur->atype, tree->name); |
| 4423 | tree = tree->next; |
| 4424 | } |
| 4425 | } |
| 4426 | } |
| 4427 | } |
| 4428 | |
| 4429 | /** |
| 4430 | * xmlValidateDtdFinal: |
| 4431 | * @ctxt: the validation context |
| 4432 | * @doc: a document instance |
| 4433 | * |
| 4434 | * Does the final step for the dtds validation once all the |
| 4435 | * subsets have been parsed |
| 4436 | * |
| 4437 | * basically it does the following checks described by the XML Rec |
| 4438 | * - check that ENTITY and ENTITIES type attributes default or |
| 4439 | * possible values matches one of the defined entities. |
| 4440 | * - check that NOTATION type attributes default or |
| 4441 | * possible values matches one of the defined notations. |
| 4442 | * |
| 4443 | * returns 1 if valid or 0 otherwise |
| 4444 | */ |
| 4445 | |
| 4446 | int |
| 4447 | xmlValidateDtdFinal(xmlValidCtxtPtr ctxt, xmlDocPtr doc) { |
| 4448 | int ret = 1; |
| 4449 | xmlDtdPtr dtd; |
| 4450 | xmlAttributeTablePtr table; |
| 4451 | |
| 4452 | if (doc == NULL) return(0); |
| 4453 | if ((doc->intSubset == NULL) && (doc->extSubset == NULL)) |
| 4454 | return(0); |
| 4455 | ctxt->doc = doc; |
| 4456 | ctxt->valid = ret; |
| 4457 | dtd = doc->intSubset; |
| 4458 | if ((dtd != NULL) && (dtd->attributes != NULL)) { |
| 4459 | table = (xmlAttributeTablePtr) dtd->attributes; |
| 4460 | xmlHashScan(table, (xmlHashScanner) xmlValidateAttributeCallback, ctxt); |
| 4461 | } |
| 4462 | dtd = doc->extSubset; |
| 4463 | if ((dtd != NULL) && (dtd->attributes != NULL)) { |
| 4464 | table = (xmlAttributeTablePtr) dtd->attributes; |
| 4465 | xmlHashScan(table, (xmlHashScanner) xmlValidateAttributeCallback, ctxt); |
| 4466 | } |
| 4467 | return(ctxt->valid); |
| 4468 | } |
| 4469 | |
| 4470 | /** |
| 4471 | * xmlValidateDocument: |
| 4472 | * @ctxt: the validation context |
| 4473 | * @doc: a document instance |
| 4474 | * |
| 4475 | * Try to validate the document instance |
| 4476 | * |
| 4477 | * basically it does the all the checks described by the XML Rec |
| 4478 | * i.e. validates the internal and external subset (if present) |
| 4479 | * and validate the document tree. |
| 4480 | * |
| 4481 | * returns 1 if valid or 0 otherwise |
| 4482 | */ |
| 4483 | |
| 4484 | int |
| 4485 | xmlValidateDocument(xmlValidCtxtPtr ctxt, xmlDocPtr doc) { |
| 4486 | int ret; |
| 4487 | xmlNodePtr root; |
| 4488 | |
| 4489 | if ((doc->intSubset == NULL) && (doc->extSubset == NULL)) |
| 4490 | return(0); |
| 4491 | if ((doc->intSubset != NULL) && ((doc->intSubset->SystemID != NULL) || |
| 4492 | (doc->intSubset->ExternalID != NULL)) && (doc->extSubset == NULL)) { |
| 4493 | doc->extSubset = xmlParseDTD(doc->intSubset->ExternalID, |
| 4494 | doc->intSubset->SystemID); |
| 4495 | if (doc->extSubset == NULL) { |
| 4496 | if (doc->intSubset->SystemID != NULL) { |
| 4497 | VERROR(ctxt->userData, |
| 4498 | "Could not load the external subset \"%s\"\n", |
| 4499 | doc->intSubset->SystemID); |
| 4500 | } else { |
| 4501 | VERROR(ctxt->userData, |
| 4502 | "Could not load the external subset \"%s\"\n", |
| 4503 | doc->intSubset->ExternalID); |
| 4504 | } |
| 4505 | return(0); |
| 4506 | } |
| 4507 | } |
| 4508 | |
| 4509 | if (doc->ids != NULL) { |
| 4510 | xmlFreeIDTable(doc->ids); |
| 4511 | doc->ids = NULL; |
| 4512 | } |
| 4513 | if (doc->refs != NULL) { |
| 4514 | xmlFreeRefTable(doc->refs); |
| 4515 | doc->refs = NULL; |
| 4516 | } |
| 4517 | ret = xmlValidateDtdFinal(ctxt, doc); |
| 4518 | if (!xmlValidateRoot(ctxt, doc)) return(0); |
| 4519 | |
| 4520 | root = xmlDocGetRootElement(doc); |
| 4521 | ret &= xmlValidateElement(ctxt, doc, root); |
| 4522 | ret &= xmlValidateDocumentFinal(ctxt, doc); |
| 4523 | return(ret); |
| 4524 | } |
| 4525 | |
| 4526 | |
| 4527 | /************************************************************************ |
| 4528 | * * |
| 4529 | * Routines for dynamic validation editing * |
| 4530 | * * |
| 4531 | ************************************************************************/ |
| 4532 | |
| 4533 | /** |
| 4534 | * xmlValidGetPotentialChildren: |
| 4535 | * @ctree: an element content tree |
| 4536 | * @list: an array to store the list of child names |
| 4537 | * @len: a pointer to the number of element in the list |
| 4538 | * @max: the size of the array |
| 4539 | * |
| 4540 | * Build/extend a list of potential children allowed by the content tree |
| 4541 | * |
| 4542 | * returns the number of element in the list, or -1 in case of error. |
| 4543 | */ |
| 4544 | |
| 4545 | int |
| 4546 | xmlValidGetPotentialChildren(xmlElementContent *ctree, const xmlChar **list, |
| 4547 | int *len, int max) { |
| 4548 | int i; |
| 4549 | |
| 4550 | if ((ctree == NULL) || (list == NULL) || (len == NULL)) |
| 4551 | return(-1); |
| 4552 | if (*len >= max) return(*len); |
| 4553 | |
| 4554 | switch (ctree->type) { |
| 4555 | case XML_ELEMENT_CONTENT_PCDATA: |
| 4556 | for (i = 0; i < *len;i++) |
| 4557 | if (xmlStrEqual(BAD_CAST "#PCDATA", list[i])) return(*len); |
| 4558 | list[(*len)++] = BAD_CAST "#PCDATA"; |
| 4559 | break; |
| 4560 | case XML_ELEMENT_CONTENT_ELEMENT: |
| 4561 | for (i = 0; i < *len;i++) |
| 4562 | if (xmlStrEqual(ctree->name, list[i])) return(*len); |
| 4563 | list[(*len)++] = ctree->name; |
| 4564 | break; |
| 4565 | case XML_ELEMENT_CONTENT_SEQ: |
| 4566 | xmlValidGetPotentialChildren(ctree->c1, list, len, max); |
| 4567 | xmlValidGetPotentialChildren(ctree->c2, list, len, max); |
| 4568 | break; |
| 4569 | case XML_ELEMENT_CONTENT_OR: |
| 4570 | xmlValidGetPotentialChildren(ctree->c1, list, len, max); |
| 4571 | xmlValidGetPotentialChildren(ctree->c2, list, len, max); |
| 4572 | break; |
| 4573 | } |
| 4574 | |
| 4575 | return(*len); |
| 4576 | } |
| 4577 | |
| 4578 | /** |
| 4579 | * xmlValidGetValidElements: |
| 4580 | * @prev: an element to insert after |
| 4581 | * @next: an element to insert next |
| 4582 | * @list: an array to store the list of child names |
| 4583 | * @max: the size of the array |
| 4584 | * |
| 4585 | * This function returns the list of authorized children to insert |
| 4586 | * within an existing tree while respecting the validity constraints |
| 4587 | * forced by the Dtd. The insertion point is defined using @prev and |
| 4588 | * @next in the following ways: |
| 4589 | * to insert before 'node': xmlValidGetValidElements(node->prev, node, ... |
| 4590 | * to insert next 'node': xmlValidGetValidElements(node, node->next, ... |
| 4591 | * to replace 'node': xmlValidGetValidElements(node->prev, node->next, ... |
| 4592 | * to prepend a child to 'node': xmlValidGetValidElements(NULL, node->childs, |
| 4593 | * to append a child to 'node': xmlValidGetValidElements(node->last, NULL, ... |
| 4594 | * |
| 4595 | * pointers to the element names are inserted at the beginning of the array |
| 4596 | * and do not need to be freed. |
| 4597 | * |
| 4598 | * returns the number of element in the list, or -1 in case of error. If |
| 4599 | * the function returns the value @max the caller is invited to grow the |
| 4600 | * receiving array and retry. |
| 4601 | */ |
| 4602 | |
| 4603 | int |
| 4604 | xmlValidGetValidElements(xmlNode *prev, xmlNode *next, const xmlChar **list, |
| 4605 | int max) { |
Daniel Veillard | f69bb4b | 2001-05-19 13:24:56 +0000 | [diff] [blame] | 4606 | xmlValidCtxt vctxt; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 4607 | int nb_valid_elements = 0; |
| 4608 | const xmlChar *elements[256]; |
| 4609 | int nb_elements = 0, i; |
| 4610 | |
| 4611 | xmlNode *ref_node; |
| 4612 | xmlNode *parent; |
| 4613 | xmlNode *test_node; |
| 4614 | |
| 4615 | xmlNode *prev_next; |
| 4616 | xmlNode *next_prev; |
| 4617 | xmlNode *parent_childs; |
| 4618 | xmlNode *parent_last; |
| 4619 | |
| 4620 | xmlElement *element_desc; |
| 4621 | |
Daniel Veillard | f69bb4b | 2001-05-19 13:24:56 +0000 | [diff] [blame] | 4622 | vctxt.userData = NULL; |
| 4623 | vctxt.error = NULL; |
| 4624 | vctxt.warning = NULL; |
| 4625 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 4626 | if (prev == NULL && next == NULL) |
| 4627 | return(-1); |
| 4628 | |
| 4629 | if (list == NULL) return(-1); |
| 4630 | if (max <= 0) return(-1); |
| 4631 | |
| 4632 | nb_valid_elements = 0; |
| 4633 | ref_node = prev ? prev : next; |
| 4634 | parent = ref_node->parent; |
| 4635 | |
| 4636 | /* |
| 4637 | * Retrieves the parent element declaration |
| 4638 | */ |
| 4639 | element_desc = xmlGetDtdElementDesc(parent->doc->intSubset, |
| 4640 | parent->name); |
| 4641 | if ((element_desc == NULL) && (parent->doc->extSubset != NULL)) |
| 4642 | element_desc = xmlGetDtdElementDesc(parent->doc->extSubset, |
| 4643 | parent->name); |
| 4644 | if (element_desc == NULL) return(-1); |
| 4645 | |
| 4646 | /* |
| 4647 | * Do a backup of the current tree structure |
| 4648 | */ |
| 4649 | prev_next = prev ? prev->next : NULL; |
| 4650 | next_prev = next ? next->prev : NULL; |
| 4651 | parent_childs = parent->children; |
| 4652 | parent_last = parent->last; |
| 4653 | |
| 4654 | /* |
| 4655 | * Creates a dummy node and insert it into the tree |
| 4656 | */ |
| 4657 | test_node = xmlNewNode (NULL, BAD_CAST "<!dummy?>"); |
| 4658 | test_node->doc = ref_node->doc; |
| 4659 | test_node->parent = parent; |
| 4660 | test_node->prev = prev; |
| 4661 | test_node->next = next; |
| 4662 | |
| 4663 | if (prev) prev->next = test_node; |
| 4664 | else parent->children = test_node; |
| 4665 | |
| 4666 | if (next) next->prev = test_node; |
| 4667 | else parent->last = test_node; |
| 4668 | |
| 4669 | /* |
| 4670 | * Insert each potential child node and check if the parent is |
| 4671 | * still valid |
| 4672 | */ |
| 4673 | nb_elements = xmlValidGetPotentialChildren(element_desc->content, |
| 4674 | elements, &nb_elements, 256); |
| 4675 | |
| 4676 | for (i = 0;i < nb_elements;i++) { |
| 4677 | test_node->name = elements[i]; |
Daniel Veillard | f69bb4b | 2001-05-19 13:24:56 +0000 | [diff] [blame] | 4678 | if (xmlValidateOneElement(&vctxt, parent->doc, parent)) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 4679 | int j; |
| 4680 | |
| 4681 | for (j = 0; j < nb_valid_elements;j++) |
| 4682 | if (xmlStrEqual(elements[i], list[j])) break; |
| 4683 | list[nb_valid_elements++] = elements[i]; |
| 4684 | if (nb_valid_elements >= max) break; |
| 4685 | } |
| 4686 | } |
| 4687 | |
| 4688 | /* |
| 4689 | * Restore the tree structure |
| 4690 | */ |
| 4691 | if (prev) prev->next = prev_next; |
| 4692 | if (next) next->prev = next_prev; |
| 4693 | parent->children = parent_childs; |
| 4694 | parent->last = parent_last; |
| 4695 | |
| 4696 | return(nb_valid_elements); |
| 4697 | } |