Daniel Veillard | e1ca503 | 2002-12-09 14:13:43 +0000 | [diff] [blame] | 1 | /* |
| 2 | * xmlreader.c: implements the xmlTextReader streaming node API |
| 3 | * |
| 4 | * See Copyright for the status of this software. |
| 5 | * |
| 6 | * daniel@veillard.com |
| 7 | */ |
| 8 | |
| 9 | #define IN_LIBXML |
| 10 | #include "libxml.h" |
| 11 | |
| 12 | #include <string.h> /* for memset() only ! */ |
| 13 | |
| 14 | #ifdef HAVE_CTYPE_H |
| 15 | #include <ctype.h> |
| 16 | #endif |
| 17 | #ifdef HAVE_STDLIB_H |
| 18 | #include <stdlib.h> |
| 19 | #endif |
| 20 | |
| 21 | #include <libxml/xmlmemory.h> |
| 22 | #include <libxml/xmlIO.h> |
| 23 | #include <libxml/xmlreader.h> |
| 24 | |
| 25 | /* #define DEBUG_CALLBACKS */ |
| 26 | /* #define DEBUG_READER */ |
| 27 | |
| 28 | /** |
| 29 | * TODO: |
| 30 | * |
| 31 | * macro to flag unimplemented blocks |
| 32 | */ |
| 33 | #define TODO \ |
| 34 | xmlGenericError(xmlGenericErrorContext, \ |
| 35 | "Unimplemented block at %s:%d\n", \ |
| 36 | __FILE__, __LINE__); |
| 37 | |
| 38 | #ifdef DEBUG_READER |
| 39 | #define DUMP_READER xmlTextReaderDebug(reader); |
| 40 | #else |
| 41 | #define DUMP_READER |
| 42 | #endif |
| 43 | |
| 44 | /************************************************************************ |
| 45 | * * |
| 46 | * The parser: maps the Text Reader API on top of the existing * |
| 47 | * parsing routines building a tree * |
| 48 | * * |
| 49 | ************************************************************************/ |
| 50 | |
| 51 | #define XML_TEXTREADER_INPUT 1 |
| 52 | #define XML_TEXTREADER_CTXT 2 |
| 53 | |
| 54 | typedef enum { |
| 55 | XML_TEXTREADER_MODE_NORMAL = 0, |
| 56 | XML_TEXTREADER_MODE_EOF = 1 |
| 57 | } xmlTextReaderMode; |
| 58 | |
| 59 | typedef enum { |
| 60 | XML_TEXTREADER_NONE = -1, |
| 61 | XML_TEXTREADER_START= 0, |
| 62 | XML_TEXTREADER_ELEMENT= 1, |
| 63 | XML_TEXTREADER_END= 2, |
| 64 | XML_TEXTREADER_EMPTY= 3, |
| 65 | XML_TEXTREADER_BACKTRACK= 4 |
| 66 | } xmlTextReaderState; |
| 67 | |
| 68 | struct _xmlTextReader { |
| 69 | int mode; /* the parsing mode */ |
| 70 | int allocs; /* what structure were deallocated */ |
| 71 | xmlTextReaderState state; |
| 72 | xmlParserCtxtPtr ctxt; /* the parser context */ |
| 73 | xmlSAXHandlerPtr sax; /* the parser SAX callbacks */ |
| 74 | xmlParserInputBufferPtr input; /* the input */ |
| 75 | startElementSAXFunc startElement;/* initial SAX callbacks */ |
| 76 | endElementSAXFunc endElement; /* idem */ |
| 77 | unsigned int base; /* base of the segment in the input */ |
| 78 | unsigned int cur; /* current position in the input */ |
| 79 | xmlNodePtr node; /* current node */ |
| 80 | int depth; /* depth of the current node */ |
| 81 | }; |
| 82 | |
| 83 | #ifdef DEBUG_READER |
| 84 | static void |
| 85 | xmlTextReaderDebug(xmlTextReaderPtr reader) { |
| 86 | if ((reader == NULL) || (reader->ctxt == NULL)) { |
| 87 | fprintf(stderr, "xmlTextReader NULL\n"); |
| 88 | return; |
| 89 | } |
| 90 | fprintf(stderr, "xmlTextReader: state %d depth %d ", |
| 91 | reader->state, reader->depth); |
| 92 | if (reader->node == NULL) { |
| 93 | fprintf(stderr, "node = NULL\n"); |
| 94 | } else { |
| 95 | fprintf(stderr, "node %s\n", reader->node->name); |
| 96 | } |
| 97 | fprintf(stderr, " input: base %d, cur %d, depth %d: ", |
| 98 | reader->base, reader->cur, reader->ctxt->nodeNr); |
| 99 | if (reader->input->buffer == NULL) { |
| 100 | fprintf(stderr, "buffer is NULL\n"); |
| 101 | } else { |
| 102 | #ifdef LIBXML_DEBUG_ENABLED |
| 103 | xmlDebugDumpString(stderr, |
| 104 | &reader->input->buffer->content[reader->cur]); |
| 105 | #endif |
| 106 | fprintf(stderr, "\n"); |
| 107 | } |
| 108 | } |
| 109 | #endif |
| 110 | |
| 111 | /** |
| 112 | * xmlTextReaderStartElement: |
| 113 | * @ctx: the user data (XML parser context) |
| 114 | * @fullname: The element name, including namespace prefix |
| 115 | * @atts: An array of name/value attributes pairs, NULL terminated |
| 116 | * |
| 117 | * called when an opening tag has been processed. |
| 118 | */ |
| 119 | static void |
| 120 | xmlTextReaderStartElement(void *ctx, const xmlChar *fullname, |
| 121 | const xmlChar **atts) { |
| 122 | xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx; |
| 123 | xmlTextReaderPtr reader = ctxt->_private; |
| 124 | |
| 125 | #ifdef DEBUG_CALLBACKS |
| 126 | printf("xmlTextReaderStartElement(%s)\n", fullname); |
| 127 | #endif |
| 128 | if ((reader != NULL) && (reader->startElement != NULL)) |
| 129 | reader->startElement(ctx, fullname, atts); |
| 130 | reader->state = XML_TEXTREADER_ELEMENT; |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * xmlTextReaderEndElement: |
| 135 | * @ctx: the user data (XML parser context) |
| 136 | * @fullname: The element name, including namespace prefix |
| 137 | * |
| 138 | * called when an ending tag has been processed. |
| 139 | */ |
| 140 | static void |
| 141 | xmlTextReaderEndElement(void *ctx, const xmlChar *fullname) { |
| 142 | xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx; |
| 143 | xmlTextReaderPtr reader = ctxt->_private; |
| 144 | |
| 145 | #ifdef DEBUG_CALLBACKS |
| 146 | printf("xmlTextReaderEndElement(%s)\n", fullname); |
| 147 | #endif |
| 148 | if ((reader != NULL) && (reader->endElement != NULL)) |
| 149 | reader->endElement(ctx, fullname); |
| 150 | if (reader->state == XML_TEXTREADER_ELEMENT) |
| 151 | reader->state = XML_TEXTREADER_EMPTY; |
| 152 | else |
| 153 | reader->state = XML_TEXTREADER_END; |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * xmlTextReaderPushData: |
| 158 | * @reader: the xmlTextReaderPtr used |
| 159 | * |
| 160 | * Push data down the progressive parser until a significant callback |
| 161 | * got raised. |
| 162 | * |
| 163 | * Returns -1 in case of failure, 0 otherwise |
| 164 | */ |
| 165 | static int |
| 166 | xmlTextReaderPushData(xmlTextReaderPtr reader) { |
| 167 | unsigned int cur = reader->cur; |
| 168 | xmlBufferPtr inbuf; |
| 169 | int val; |
| 170 | |
| 171 | if ((reader->input == NULL) || (reader->input->buffer == NULL)) |
| 172 | return(-1); |
| 173 | |
| 174 | reader->state = XML_TEXTREADER_NONE; |
| 175 | inbuf = reader->input->buffer; |
| 176 | while (reader->state == XML_TEXTREADER_NONE) { |
| 177 | if (cur >= inbuf->use) { |
| 178 | /* |
| 179 | * Refill the buffer unless we are at the end of the stream |
| 180 | */ |
| 181 | if (reader->mode != XML_TEXTREADER_MODE_EOF) { |
| 182 | val = xmlParserInputBufferRead(reader->input, 4096); |
| 183 | if (val <= 0) { |
| 184 | reader->mode = XML_TEXTREADER_MODE_EOF; |
| 185 | return(val); |
| 186 | } |
| 187 | } else |
| 188 | break; |
| 189 | } |
| 190 | if ((inbuf->content[cur] == '>') || (inbuf->content[cur] == '&')) { |
| 191 | cur = cur + 1; |
| 192 | val = xmlParseChunk(reader->ctxt, |
| 193 | (const char *) &inbuf->content[reader->cur], |
| 194 | cur - reader->cur, 0); |
| 195 | if (val != 0) |
| 196 | return(-1); |
| 197 | reader->cur = cur; |
| 198 | break; |
| 199 | } else { |
| 200 | cur = cur + 1; |
| 201 | |
| 202 | /* |
| 203 | * One may have to force a flush at some point when parsing really |
| 204 | * large CDATA sections |
| 205 | */ |
| 206 | if ((cur - reader->cur > 4096) && (reader->base == 0) && |
| 207 | (reader->mode == XML_TEXTREADER_MODE_NORMAL)) { |
| 208 | cur = cur + 1; |
| 209 | val = xmlParseChunk(reader->ctxt, |
| 210 | (const char *) &inbuf->content[reader->cur], |
| 211 | cur - reader->cur, 0); |
| 212 | if (val != 0) |
| 213 | return(-1); |
| 214 | reader->cur = cur; |
| 215 | } |
| 216 | } |
| 217 | } |
| 218 | /* |
| 219 | * Discard the consumed input when needed and possible |
| 220 | */ |
| 221 | if (reader->mode == XML_TEXTREADER_MODE_NORMAL) { |
| 222 | if ((reader->cur >= 4096) && (reader->base == 0)) { |
| 223 | val = xmlBufferShrink(inbuf, cur); |
| 224 | if (val >= 0) { |
| 225 | reader->cur -= val; |
| 226 | } |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | /* |
| 231 | * At the end of the stream signal that the work is done to the Push |
| 232 | * parser. |
| 233 | */ |
| 234 | if ((reader->mode == XML_TEXTREADER_MODE_EOF) && (cur >= inbuf->use)) { |
| 235 | val = xmlParseChunk(reader->ctxt, |
| 236 | (const char *) &inbuf->content[reader->cur], 0, 1); |
| 237 | } |
| 238 | return(0); |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * xmlTextReaderRead: |
| 243 | * @reader: the xmlTextReaderPtr used |
| 244 | * |
| 245 | * Moves the position of the current instance to the next node in |
| 246 | * the stream, exposing its properties. |
| 247 | * |
| 248 | * Returns 1 if the node was read successfully, 0 if there is no more |
| 249 | * nodes to read, or -1 in case of error |
| 250 | */ |
| 251 | int |
| 252 | xmlTextReaderRead(xmlTextReaderPtr reader) { |
| 253 | int val, olddepth; |
| 254 | xmlTextReaderState oldstate; |
| 255 | xmlNodePtr oldnode; |
| 256 | |
| 257 | if ((reader == NULL) || (reader->ctxt == NULL)) |
| 258 | return(-1); |
| 259 | if (reader->ctxt->wellFormed != 1) |
| 260 | return(-1); |
| 261 | |
| 262 | #ifdef DEBUG_READER |
| 263 | fprintf(stderr, "\nREAD "); |
| 264 | DUMP_READER |
| 265 | #endif |
| 266 | if (reader->node == NULL) { |
| 267 | /* |
| 268 | * Initial state |
| 269 | */ |
| 270 | do { |
| 271 | val = xmlTextReaderPushData(reader); |
| 272 | if (val < 0) |
| 273 | return(-1); |
| 274 | } while ((reader->ctxt->node == NULL) && |
| 275 | (reader->mode != XML_TEXTREADER_MODE_EOF)); |
| 276 | if (reader->ctxt->node == NULL) { |
| 277 | if (reader->ctxt->myDoc != NULL) |
| 278 | reader->node = reader->ctxt->myDoc->children; |
| 279 | if (reader->node == NULL) |
| 280 | return(-1); |
| 281 | } else { |
| 282 | reader->node = reader->ctxt->node; |
| 283 | } |
| 284 | reader->depth = 1; |
| 285 | return(1); |
| 286 | } |
| 287 | oldstate = reader->state; |
| 288 | olddepth = reader->ctxt->nodeNr; |
| 289 | oldnode = reader->node; |
| 290 | /* |
| 291 | * If we are not backtracking on ancestors or examined nodes, |
| 292 | * that the parser didn't finished or that we arent at the end |
| 293 | * of stream, continue processing. |
| 294 | */ |
| 295 | if (oldstate != XML_TEXTREADER_BACKTRACK) { |
| 296 | while (((reader->node->children == NULL) || |
| 297 | (reader->node->type == XML_ENTITY_REF_NODE) || |
| 298 | (reader->node->type == XML_DTD_NODE)) && |
| 299 | (reader->node->next == NULL) && |
| 300 | (reader->ctxt->nodeNr == olddepth) && |
| 301 | (reader->ctxt->instate != XML_PARSER_EOF)) { |
| 302 | val = xmlTextReaderPushData(reader); |
| 303 | if (val < 0) |
| 304 | return(-1); |
| 305 | if (reader->node == NULL) |
| 306 | return(0); |
| 307 | } |
| 308 | if ((reader->node->children != NULL) && |
| 309 | (reader->node->type != XML_ENTITY_REF_NODE) && |
| 310 | (reader->node->type != XML_DTD_NODE)) { |
| 311 | reader->node = reader->node->children; |
| 312 | reader->depth++; |
| 313 | if ((reader->state != XML_TEXTREADER_ELEMENT) && |
| 314 | (reader->state != XML_TEXTREADER_EMPTY)) |
| 315 | reader->state = XML_TEXTREADER_ELEMENT; |
| 316 | DUMP_READER |
| 317 | return(1); |
| 318 | } |
| 319 | } |
| 320 | if (reader->node->next != NULL) { |
| 321 | if ((oldstate == XML_TEXTREADER_ELEMENT) && |
| 322 | (reader->node->type == XML_ELEMENT_NODE)) { |
| 323 | reader->state = XML_TEXTREADER_END; |
| 324 | DUMP_READER |
| 325 | return(1); |
| 326 | } |
| 327 | reader->node = reader->node->next; |
| 328 | reader->state = XML_TEXTREADER_ELEMENT; |
| 329 | DUMP_READER |
| 330 | /* |
| 331 | * Cleanup of the old node |
| 332 | */ |
| 333 | if (oldnode->type != XML_DTD_NODE) { |
| 334 | xmlUnlinkNode(oldnode); |
| 335 | xmlFreeNode(oldnode); |
| 336 | } |
| 337 | |
| 338 | return(1); |
| 339 | } |
| 340 | reader->node = reader->node->parent; |
| 341 | if ((reader->node == NULL) || |
| 342 | (reader->node->type == XML_DOCUMENT_NODE) || |
| 343 | #ifdef LIBXML_DOCB_ENABLED |
| 344 | (reader->node->type == XML_DOCB_DOCUMENT_NODE) || |
| 345 | #endif |
| 346 | (reader->node->type == XML_HTML_DOCUMENT_NODE)) { |
| 347 | reader->node = NULL; |
| 348 | reader->depth = 0; |
| 349 | |
| 350 | /* |
| 351 | * Cleanup of the old node |
| 352 | */ |
| 353 | if (oldnode->type != XML_DTD_NODE) { |
| 354 | xmlUnlinkNode(oldnode); |
| 355 | xmlFreeNode(oldnode); |
| 356 | } |
| 357 | |
| 358 | return(0); |
| 359 | } |
| 360 | reader->depth--; |
| 361 | reader->state = XML_TEXTREADER_BACKTRACK; |
| 362 | DUMP_READER |
| 363 | return(1); |
| 364 | } |
| 365 | |
| 366 | /************************************************************************ |
| 367 | * * |
| 368 | * Constructor and destructors * |
| 369 | * * |
| 370 | ************************************************************************/ |
| 371 | /** |
| 372 | * xmlNewTextReader: |
| 373 | * @input: the xmlParserInputBufferPtr used to read data |
| 374 | * |
| 375 | * Create an xmlTextReader structure fed with @input |
| 376 | * |
| 377 | * Returns the new xmlTextReaderPtr or NULL in case of error |
| 378 | */ |
| 379 | xmlTextReaderPtr |
| 380 | xmlNewTextReader(xmlParserInputBufferPtr input) { |
| 381 | xmlTextReaderPtr ret; |
| 382 | int val; |
| 383 | |
| 384 | if (input == NULL) |
| 385 | return(NULL); |
| 386 | ret = xmlMalloc(sizeof(xmlTextReader)); |
| 387 | if (ret == NULL) { |
| 388 | xmlGenericError(xmlGenericErrorContext, |
| 389 | "xmlNewTextReader : malloc failed\n"); |
| 390 | return(NULL); |
| 391 | } |
| 392 | memset(ret, 0, sizeof(xmlTextReader)); |
| 393 | ret->input = input; |
| 394 | ret->sax = (xmlSAXHandler *) xmlMalloc(sizeof(xmlSAXHandler)); |
| 395 | if (ret->sax == NULL) { |
| 396 | xmlFree(ret); |
| 397 | xmlGenericError(xmlGenericErrorContext, |
| 398 | "xmlNewTextReader : malloc failed\n"); |
| 399 | return(NULL); |
| 400 | } |
| 401 | memcpy(ret->sax, &xmlDefaultSAXHandler, sizeof(xmlSAXHandler)); |
| 402 | ret->startElement = ret->sax->startElement; |
| 403 | ret->sax->startElement = xmlTextReaderStartElement; |
| 404 | ret->endElement = ret->sax->endElement; |
| 405 | ret->sax->endElement = xmlTextReaderEndElement; |
| 406 | |
| 407 | ret->mode = XML_TEXTREADER_MODE_NORMAL; |
| 408 | ret->node = NULL; |
| 409 | val = xmlParserInputBufferRead(input, 4); |
| 410 | if (val >= 4) { |
| 411 | ret->ctxt = xmlCreatePushParserCtxt(ret->sax, NULL, |
| 412 | (const char *) ret->input->buffer->content, 4, NULL); |
| 413 | ret->base = 0; |
| 414 | ret->cur = 4; |
| 415 | } else { |
| 416 | ret->ctxt = xmlCreatePushParserCtxt(ret->sax, NULL, NULL, 0, NULL); |
| 417 | ret->base = 0; |
| 418 | ret->cur = 0; |
| 419 | } |
| 420 | ret->ctxt->_private = ret; |
| 421 | ret->allocs = XML_TEXTREADER_CTXT; |
| 422 | return(ret); |
| 423 | |
| 424 | } |
| 425 | |
| 426 | /** |
| 427 | * xmlNewTextReaderFilename: |
| 428 | * @URI: the URI of the resource to process |
| 429 | * |
| 430 | * Create an xmlTextReader structure fed with the resource at @URI |
| 431 | * |
| 432 | * Returns the new xmlTextReaderPtr or NULL in case of error |
| 433 | */ |
| 434 | xmlTextReaderPtr |
| 435 | xmlNewTextReaderFilename(const char *URI) { |
| 436 | xmlParserInputBufferPtr input; |
| 437 | xmlTextReaderPtr ret; |
| 438 | |
| 439 | input = xmlParserInputBufferCreateFilename(URI, XML_CHAR_ENCODING_NONE); |
| 440 | if (input == NULL) |
| 441 | return(NULL); |
| 442 | ret = xmlNewTextReader(input); |
| 443 | if (ret == NULL) { |
| 444 | xmlFreeParserInputBuffer(input); |
| 445 | return(NULL); |
| 446 | } |
| 447 | ret->allocs |= XML_TEXTREADER_INPUT; |
| 448 | return(ret); |
| 449 | } |
| 450 | |
| 451 | /** |
| 452 | * xmlFreeTextReader: |
| 453 | * @reader: the xmlTextReaderPtr |
| 454 | * |
| 455 | * Deallocate all the resources associated to the reader |
| 456 | */ |
| 457 | void |
| 458 | xmlFreeTextReader(xmlTextReaderPtr reader) { |
| 459 | if (reader == NULL) |
| 460 | return; |
| 461 | if (reader->ctxt != NULL) { |
| 462 | if (reader->ctxt->myDoc != NULL) { |
| 463 | xmlFreeDoc(reader->ctxt->myDoc); |
| 464 | reader->ctxt->myDoc = NULL; |
| 465 | } |
| 466 | if (reader->allocs & XML_TEXTREADER_CTXT) |
| 467 | xmlFreeParserCtxt(reader->ctxt); |
| 468 | } |
| 469 | if (reader->sax != NULL) |
| 470 | xmlFree(reader->sax); |
| 471 | if ((reader->input != NULL) && (reader->allocs & XML_TEXTREADER_INPUT)) |
| 472 | xmlFreeParserInputBuffer(reader->input); |
| 473 | xmlFree(reader); |
| 474 | } |
| 475 | |
| 476 | /************************************************************************ |
| 477 | * * |
| 478 | * Acces API to the current node * |
| 479 | * * |
| 480 | ************************************************************************/ |
| 481 | /** |
| 482 | * xmlTextReaderAttributeCount: |
| 483 | * @reader: the xmlTextReaderPtr used |
| 484 | * |
| 485 | * Returns the number of attributes of the current node |
| 486 | * |
| 487 | * Returns 0 i no attributes, -1 in case of error or the attribute count |
| 488 | */ |
| 489 | int |
| 490 | xmlTextReaderAttributeCount(xmlTextReaderPtr reader) { |
| 491 | int ret; |
| 492 | xmlAttrPtr attr; |
| 493 | |
| 494 | if (reader == NULL) |
| 495 | return(-1); |
| 496 | if (reader->node == NULL) |
| 497 | return(0); |
| 498 | if (reader->node->type != XML_ELEMENT_NODE) |
| 499 | return(0); |
| 500 | if ((reader->state == XML_TEXTREADER_END) || |
| 501 | (reader->state == XML_TEXTREADER_BACKTRACK)) |
| 502 | return(0); |
| 503 | ret = 0; |
| 504 | attr = reader->node->properties; |
| 505 | while (attr != NULL) { |
| 506 | ret++; |
| 507 | attr = attr->next; |
| 508 | } |
| 509 | return(ret); |
| 510 | } |
| 511 | |
| 512 | /** |
| 513 | * xmlTextReaderNodeType: |
| 514 | * @reader: the xmlTextReaderPtr used |
| 515 | * |
| 516 | * Get the node type of the current node |
| 517 | * Reference: |
| 518 | * http://dotgnu.org/pnetlib-doc/System/Xml/XmlNodeType.html |
| 519 | * |
| 520 | * Returns the xmlNodeType of the current node or -1 in case of error |
| 521 | */ |
| 522 | int |
| 523 | xmlTextReaderNodeType(xmlTextReaderPtr reader) { |
| 524 | if (reader == NULL) |
| 525 | return(-1); |
| 526 | if (reader->node == NULL) |
| 527 | return(0); |
| 528 | switch (reader->node->type) { |
| 529 | case XML_ELEMENT_NODE: |
| 530 | if ((reader->state == XML_TEXTREADER_END) || |
| 531 | (reader->state == XML_TEXTREADER_BACKTRACK)) |
| 532 | return(15); |
| 533 | return(1); |
| 534 | case XML_ATTRIBUTE_NODE: |
| 535 | return(2); |
| 536 | case XML_TEXT_NODE: |
| 537 | return(3); /* TODO: SignificantWhitespace == 14 Whitespace == 13 */ |
| 538 | case XML_CDATA_SECTION_NODE: |
| 539 | return(4); |
| 540 | case XML_ENTITY_REF_NODE: |
| 541 | return(5); |
| 542 | case XML_ENTITY_NODE: |
| 543 | return(6); |
| 544 | case XML_PI_NODE: |
| 545 | return(7); |
| 546 | case XML_COMMENT_NODE: |
| 547 | return(8); |
| 548 | case XML_DOCUMENT_NODE: |
| 549 | case XML_HTML_DOCUMENT_NODE: |
| 550 | #ifdef LIBXML_DOCB_ENABLED |
| 551 | case XML_DOCB_DOCUMENT_NODE: |
| 552 | #endif |
| 553 | return(9); |
| 554 | case XML_DOCUMENT_FRAG_NODE: |
| 555 | return(11); |
| 556 | case XML_NOTATION_NODE: |
| 557 | return(12); |
| 558 | case XML_DOCUMENT_TYPE_NODE: |
| 559 | case XML_DTD_NODE: |
| 560 | return(10); |
| 561 | |
| 562 | case XML_ELEMENT_DECL: |
| 563 | case XML_ATTRIBUTE_DECL: |
| 564 | case XML_ENTITY_DECL: |
| 565 | case XML_NAMESPACE_DECL: |
| 566 | case XML_XINCLUDE_START: |
| 567 | case XML_XINCLUDE_END: |
| 568 | return(0); |
| 569 | } |
| 570 | return(-1); |
| 571 | } |
| 572 | |
| 573 | /** |
Daniel Veillard | 01c13b5 | 2002-12-10 15:19:08 +0000 | [diff] [blame^] | 574 | * xmlTextReaderIsEmptyElement: |
Daniel Veillard | e1ca503 | 2002-12-09 14:13:43 +0000 | [diff] [blame] | 575 | * @reader: the xmlTextReaderPtr used |
| 576 | * |
| 577 | * Check if the current node is empty |
| 578 | * |
| 579 | * Returns 1 if empty, 0 if not and -1 in case of error |
| 580 | */ |
| 581 | int |
| 582 | xmlTextReaderIsEmptyElement(xmlTextReaderPtr reader) { |
| 583 | if ((reader == NULL) || (reader->node == NULL)) |
| 584 | return(-1); |
| 585 | if (reader->node->children != NULL) |
| 586 | return(0); |
| 587 | if ((reader->state == XML_TEXTREADER_EMPTY) || |
| 588 | (reader->state == XML_TEXTREADER_BACKTRACK)) |
| 589 | return(1); |
| 590 | return(0); |
| 591 | } |
| 592 | |
| 593 | /** |
| 594 | * xmlTextReaderLocalName: |
| 595 | * @reader: the xmlTextReaderPtr used |
| 596 | * |
| 597 | * The local name of the node. |
| 598 | * |
| 599 | * Returns the local name or NULL if not available |
| 600 | */ |
| 601 | xmlChar * |
| 602 | xmlTextReaderLocalName(xmlTextReaderPtr reader) { |
| 603 | if ((reader == NULL) || (reader->node == NULL)) |
| 604 | return(NULL); |
| 605 | if ((reader->node->type != XML_ELEMENT_NODE) && |
| 606 | (reader->node->type != XML_ATTRIBUTE_NODE)) |
| 607 | return(NULL); |
| 608 | return(xmlStrdup(reader->node->name)); |
| 609 | } |
| 610 | |
| 611 | /** |
| 612 | * xmlTextReaderName: |
| 613 | * @reader: the xmlTextReaderPtr used |
| 614 | * |
| 615 | * The qualified name of the node, equal to Prefix :LocalName. |
| 616 | * |
| 617 | * Returns the local name or NULL if not available |
| 618 | */ |
| 619 | xmlChar * |
| 620 | xmlTextReaderName(xmlTextReaderPtr reader) { |
| 621 | xmlChar *ret; |
| 622 | |
| 623 | if ((reader == NULL) || (reader->node == NULL)) |
| 624 | return(NULL); |
| 625 | if ((reader->node->type != XML_ELEMENT_NODE) && |
| 626 | (reader->node->type != XML_ATTRIBUTE_NODE)) |
| 627 | return(NULL); |
| 628 | if ((reader->node->ns == NULL) || (reader->node->ns->prefix == NULL)) |
| 629 | return(xmlStrdup(reader->node->name)); |
| 630 | |
| 631 | ret = xmlStrdup(reader->node->ns->prefix); |
| 632 | ret = xmlStrcat(ret, BAD_CAST ":"); |
| 633 | ret = xmlStrcat(ret, reader->node->name); |
| 634 | return(ret); |
| 635 | } |
| 636 | |
| 637 | /** |
| 638 | * xmlTextReaderPrefix: |
| 639 | * @reader: the xmlTextReaderPtr used |
| 640 | * |
| 641 | * A shorthand reference to the namespace associated with the node. |
| 642 | * |
| 643 | * Returns the prefix or NULL if not available |
| 644 | */ |
| 645 | xmlChar * |
| 646 | xmlTextReaderPrefix(xmlTextReaderPtr reader) { |
| 647 | if ((reader == NULL) || (reader->node == NULL)) |
| 648 | return(NULL); |
| 649 | if ((reader->node->type != XML_ELEMENT_NODE) && |
| 650 | (reader->node->type != XML_ATTRIBUTE_NODE)) |
| 651 | return(NULL); |
| 652 | if ((reader->node->ns != NULL) || (reader->node->ns->prefix != NULL)) |
| 653 | return(xmlStrdup(reader->node->ns->prefix)); |
| 654 | return(NULL); |
| 655 | } |
| 656 | |
| 657 | /** |
| 658 | * xmlTextReaderNamespaceUri: |
| 659 | * @reader: the xmlTextReaderPtr used |
| 660 | * |
| 661 | * The URI defining the namespace associated with the node. |
| 662 | * |
| 663 | * Returns the namespace URI or NULL if not available |
| 664 | */ |
| 665 | xmlChar * |
| 666 | xmlTextReaderNamespaceUri(xmlTextReaderPtr reader) { |
| 667 | if ((reader == NULL) || (reader->node == NULL)) |
| 668 | return(NULL); |
| 669 | if ((reader->node->type != XML_ELEMENT_NODE) && |
| 670 | (reader->node->type != XML_ATTRIBUTE_NODE)) |
| 671 | return(NULL); |
| 672 | if (reader->node->ns != NULL) |
| 673 | return(xmlStrdup(reader->node->ns->href)); |
| 674 | return(NULL); |
| 675 | } |
| 676 | |
| 677 | /** |
| 678 | * xmlTextReaderBaseUri: |
| 679 | * @reader: the xmlTextReaderPtr used |
| 680 | * |
| 681 | * The base URI of the node. |
| 682 | * |
| 683 | * Returns the base URI or NULL if not available |
| 684 | */ |
| 685 | xmlChar * |
| 686 | xmlTextReaderBaseUri(xmlTextReaderPtr reader) { |
| 687 | if ((reader == NULL) || (reader->node == NULL)) |
| 688 | return(NULL); |
| 689 | return(xmlNodeGetBase(NULL, reader->node)); |
| 690 | } |
| 691 | |
| 692 | /** |
| 693 | * xmlTextReaderDepth: |
| 694 | * @reader: the xmlTextReaderPtr used |
| 695 | * |
| 696 | * The depth of the node in the tree. |
| 697 | * |
| 698 | * Returns the depth or -1 in case of error |
| 699 | */ |
| 700 | int |
| 701 | xmlTextReaderDepth(xmlTextReaderPtr reader) { |
| 702 | if (reader == NULL) |
| 703 | return(-1); |
| 704 | if (reader->node == NULL) |
| 705 | return(0); |
| 706 | |
| 707 | return(reader->depth); |
| 708 | } |
| 709 | |
| 710 | /** |
| 711 | * xmlTextReaderHasAttributes: |
| 712 | * @reader: the xmlTextReaderPtr used |
| 713 | * |
| 714 | * Whether the node has attributes. |
| 715 | * |
| 716 | * Returns 1 if true, 0 if false, and -1 in case or error |
| 717 | */ |
| 718 | int |
| 719 | xmlTextReaderHasAttributes(xmlTextReaderPtr reader) { |
| 720 | if (reader == NULL) |
| 721 | return(-1); |
| 722 | if (reader->node == NULL) |
| 723 | return(0); |
| 724 | |
| 725 | if ((reader->node->type == XML_ELEMENT_NODE) && |
| 726 | (reader->node->properties != NULL)) |
| 727 | return(1); |
| 728 | /* TODO: handle the xmlDecl */ |
| 729 | return(0); |
| 730 | } |
| 731 | |
| 732 | /** |
| 733 | * xmlTextReaderHasValue: |
| 734 | * @reader: the xmlTextReaderPtr used |
| 735 | * |
| 736 | * Whether the node can have a text value. |
| 737 | * |
| 738 | * Returns 1 if true, 0 if false, and -1 in case or error |
| 739 | */ |
| 740 | int |
| 741 | xmlTextReaderHasValue(xmlTextReaderPtr reader) { |
| 742 | if (reader == NULL) |
| 743 | return(-1); |
| 744 | if (reader->node == NULL) |
| 745 | return(0); |
| 746 | |
| 747 | TODO |
| 748 | return(0); |
| 749 | } |
| 750 | |
| 751 | /* |
| 752 | int xmlTextReaderIsDefault (xmlTextReaderPtr reader); |
| 753 | int xmlTextReaderQuoteChar (xmlTextReaderPtr reader); |
| 754 | xmlChar * xmlTextReaderValue (xmlTextReaderPtr reader); |
| 755 | */ |
| 756 | |
| 757 | /** |
| 758 | * xmlTextReaderXmlLang: |
| 759 | * @reader: the xmlTextReaderPtr used |
| 760 | * |
| 761 | * The xml:lang scope within which the node resides. |
| 762 | * |
| 763 | * Returns the xml:lang value or NULL if none exists. |
| 764 | */ |
| 765 | xmlChar * |
| 766 | xmlTextReaderXmlLang(xmlTextReaderPtr reader) { |
| 767 | if (reader == NULL) |
| 768 | return(NULL); |
| 769 | if (reader->node == NULL) |
| 770 | return(NULL); |
| 771 | return(xmlNodeGetLang(reader->node)); |
| 772 | } |
| 773 | |