1: /*
2: * HTMLparser.c : an HTML 4.0 non-verifying parser
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: #ifdef LIBXML_HTML_ENABLED
12:
13: #include <string.h>
14: #ifdef HAVE_CTYPE_H
15: #include <ctype.h>
16: #endif
17: #ifdef HAVE_STDLIB_H
18: #include <stdlib.h>
19: #endif
20: #ifdef HAVE_SYS_STAT_H
21: #include <sys/stat.h>
22: #endif
23: #ifdef HAVE_FCNTL_H
24: #include <fcntl.h>
25: #endif
26: #ifdef HAVE_UNISTD_H
27: #include <unistd.h>
28: #endif
29: #ifdef HAVE_ZLIB_H
30: #include <zlib.h>
31: #endif
32:
33: #include <libxml/xmlmemory.h>
34: #include <libxml/tree.h>
35: #include <libxml/parser.h>
36: #include <libxml/parserInternals.h>
37: #include <libxml/xmlerror.h>
38: #include <libxml/HTMLparser.h>
39: #include <libxml/HTMLtree.h>
40: #include <libxml/entities.h>
41: #include <libxml/encoding.h>
42: #include <libxml/valid.h>
43: #include <libxml/xmlIO.h>
44: #include <libxml/globals.h>
45: #include <libxml/uri.h>
46:
47: #define HTML_MAX_NAMELEN 1000
48: #define HTML_PARSER_BIG_BUFFER_SIZE 1000
49: #define HTML_PARSER_BUFFER_SIZE 100
50:
51: /* #define DEBUG */
52: /* #define DEBUG_PUSH */
53:
54: static int htmlOmittedDefaultValue = 1;
55:
56: xmlChar * htmlDecodeEntities(htmlParserCtxtPtr ctxt, int len,
57: xmlChar end, xmlChar end2, xmlChar end3);
58: static void htmlParseComment(htmlParserCtxtPtr ctxt);
59:
60: /************************************************************************
61: * *
62: * Some factorized error routines *
63: * *
64: ************************************************************************/
65:
66: /**
67: * htmlErrMemory:
68: * @ctxt: an HTML parser context
69: * @extra: extra informations
70: *
71: * Handle a redefinition of attribute error
72: */
73: static void
74: htmlErrMemory(xmlParserCtxtPtr ctxt, const char *extra)
75: {
76: if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
77: (ctxt->instate == XML_PARSER_EOF))
78: return;
79: if (ctxt != NULL) {
80: ctxt->errNo = XML_ERR_NO_MEMORY;
81: ctxt->instate = XML_PARSER_EOF;
82: ctxt->disableSAX = 1;
83: }
84: if (extra)
85: __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER,
86: XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, extra,
87: NULL, NULL, 0, 0,
88: "Memory allocation failed : %s\n", extra);
89: else
90: __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER,
91: XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, NULL,
92: NULL, NULL, 0, 0, "Memory allocation failed\n");
93: }
94:
95: /**
96: * htmlParseErr:
97: * @ctxt: an HTML parser context
98: * @error: the error number
99: * @msg: the error message
100: * @str1: string infor
101: * @str2: string infor
102: *
103: * Handle a fatal parser error, i.e. violating Well-Formedness constraints
104: */
105: static void
106: htmlParseErr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
107: const char *msg, const xmlChar *str1, const xmlChar *str2)
108: {
109: if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
110: (ctxt->instate == XML_PARSER_EOF))
111: return;
112: if (ctxt != NULL)
113: ctxt->errNo = error;
114: __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_HTML, error,
115: XML_ERR_ERROR, NULL, 0,
116: (const char *) str1, (const char *) str2,
117: NULL, 0, 0,
118: msg, str1, str2);
119: if (ctxt != NULL)
120: ctxt->wellFormed = 0;
121: }
122:
123: /**
124: * htmlParseErrInt:
125: * @ctxt: an HTML parser context
126: * @error: the error number
127: * @msg: the error message
128: * @val: integer info
129: *
130: * Handle a fatal parser error, i.e. violating Well-Formedness constraints
131: */
132: static void
133: htmlParseErrInt(xmlParserCtxtPtr ctxt, xmlParserErrors error,
134: const char *msg, int val)
135: {
136: if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
137: (ctxt->instate == XML_PARSER_EOF))
138: return;
139: if (ctxt != NULL)
140: ctxt->errNo = error;
141: __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_HTML, error,
142: XML_ERR_ERROR, NULL, 0, NULL, NULL,
143: NULL, val, 0, msg, val);
144: if (ctxt != NULL)
145: ctxt->wellFormed = 0;
146: }
147:
148: /************************************************************************
149: * *
150: * Parser stacks related functions and macros *
151: * *
152: ************************************************************************/
153:
154: /**
155: * htmlnamePush:
156: * @ctxt: an HTML parser context
157: * @value: the element name
158: *
159: * Pushes a new element name on top of the name stack
160: *
161: * Returns 0 in case of error, the index in the stack otherwise
162: */
163: static int
164: htmlnamePush(htmlParserCtxtPtr ctxt, const xmlChar * value)
165: {
166: if ((ctxt->html < 3) && (xmlStrEqual(value, BAD_CAST "head")))
167: ctxt->html = 3;
168: if ((ctxt->html < 10) && (xmlStrEqual(value, BAD_CAST "body")))
169: ctxt->html = 10;
170: if (ctxt->nameNr >= ctxt->nameMax) {
171: ctxt->nameMax *= 2;
172: ctxt->nameTab = (const xmlChar * *)
173: xmlRealloc((xmlChar * *)ctxt->nameTab,
174: ctxt->nameMax *
175: sizeof(ctxt->nameTab[0]));
176: if (ctxt->nameTab == NULL) {
177: htmlErrMemory(ctxt, NULL);
178: return (0);
179: }
180: }
181: ctxt->nameTab[ctxt->nameNr] = value;
182: ctxt->name = value;
183: return (ctxt->nameNr++);
184: }
185: /**
186: * htmlnamePop:
187: * @ctxt: an HTML parser context
188: *
189: * Pops the top element name from the name stack
190: *
191: * Returns the name just removed
192: */
193: static const xmlChar *
194: htmlnamePop(htmlParserCtxtPtr ctxt)
195: {
196: const xmlChar *ret;
197:
198: if (ctxt->nameNr <= 0)
199: return (NULL);
200: ctxt->nameNr--;
201: if (ctxt->nameNr < 0)
202: return (NULL);
203: if (ctxt->nameNr > 0)
204: ctxt->name = ctxt->nameTab[ctxt->nameNr - 1];
205: else
206: ctxt->name = NULL;
207: ret = ctxt->nameTab[ctxt->nameNr];
208: ctxt->nameTab[ctxt->nameNr] = NULL;
209: return (ret);
210: }
211:
212: /**
213: * htmlNodeInfoPush:
214: * @ctxt: an HTML parser context
215: * @value: the node info
216: *
217: * Pushes a new element name on top of the node info stack
218: *
219: * Returns 0 in case of error, the index in the stack otherwise
220: */
221: static int
222: htmlNodeInfoPush(htmlParserCtxtPtr ctxt, htmlParserNodeInfo *value)
223: {
224: if (ctxt->nodeInfoNr >= ctxt->nodeInfoMax) {
225: if (ctxt->nodeInfoMax == 0)
226: ctxt->nodeInfoMax = 5;
227: ctxt->nodeInfoMax *= 2;
228: ctxt->nodeInfoTab = (htmlParserNodeInfo *)
229: xmlRealloc((htmlParserNodeInfo *)ctxt->nodeInfoTab,
230: ctxt->nodeInfoMax *
231: sizeof(ctxt->nodeInfoTab[0]));
232: if (ctxt->nodeInfoTab == NULL) {
233: htmlErrMemory(ctxt, NULL);
234: return (0);
235: }
236: }
237: ctxt->nodeInfoTab[ctxt->nodeInfoNr] = *value;
238: ctxt->nodeInfo = &ctxt->nodeInfoTab[ctxt->nodeInfoNr];
239: return (ctxt->nodeInfoNr++);
240: }
241:
242: /**
243: * htmlNodeInfoPop:
244: * @ctxt: an HTML parser context
245: *
246: * Pops the top element name from the node info stack
247: *
248: * Returns 0 in case of error, the pointer to NodeInfo otherwise
249: */
250: static htmlParserNodeInfo *
251: htmlNodeInfoPop(htmlParserCtxtPtr ctxt)
252: {
253: if (ctxt->nodeInfoNr <= 0)
254: return (NULL);
255: ctxt->nodeInfoNr--;
256: if (ctxt->nodeInfoNr < 0)
257: return (NULL);
258: if (ctxt->nodeInfoNr > 0)
259: ctxt->nodeInfo = &ctxt->nodeInfoTab[ctxt->nodeInfoNr - 1];
260: else
261: ctxt->nodeInfo = NULL;
262: return &ctxt->nodeInfoTab[ctxt->nodeInfoNr];
263: }
264:
265: /*
266: * Macros for accessing the content. Those should be used only by the parser,
267: * and not exported.
268: *
269: * Dirty macros, i.e. one need to make assumption on the context to use them
270: *
271: * CUR_PTR return the current pointer to the xmlChar to be parsed.
272: * CUR returns the current xmlChar value, i.e. a 8 bit value if compiled
273: * in ISO-Latin or UTF-8, and the current 16 bit value if compiled
274: * in UNICODE mode. This should be used internally by the parser
275: * only to compare to ASCII values otherwise it would break when
276: * running with UTF-8 encoding.
277: * NXT(n) returns the n'th next xmlChar. Same as CUR is should be used only
278: * to compare on ASCII based substring.
279: * UPP(n) returns the n'th next xmlChar converted to uppercase. Same as CUR
280: * it should be used only to compare on ASCII based substring.
281: * SKIP(n) Skip n xmlChar, and must also be used only to skip ASCII defined
282: * strings without newlines within the parser.
283: *
284: * Clean macros, not dependent of an ASCII context, expect UTF-8 encoding
285: *
286: * CURRENT Returns the current char value, with the full decoding of
287: * UTF-8 if we are using this mode. It returns an int.
288: * NEXT Skip to the next character, this does the proper decoding
289: * in UTF-8 mode. It also pop-up unfinished entities on the fly.
290: * NEXTL(l) Skip the current unicode character of l xmlChars long.
291: * COPY(to) copy one char to *to, increment CUR_PTR and to accordingly
292: */
293:
294: #define UPPER (toupper(*ctxt->input->cur))
295:
296: #define SKIP(val) ctxt->nbChars += (val),ctxt->input->cur += (val),ctxt->input->col+=(val)
297:
298: #define NXT(val) ctxt->input->cur[(val)]
299:
300: #define UPP(val) (toupper(ctxt->input->cur[(val)]))
301:
302: #define CUR_PTR ctxt->input->cur
303:
304: #define SHRINK if ((ctxt->input->cur - ctxt->input->base > 2 * INPUT_CHUNK) && \
305: (ctxt->input->end - ctxt->input->cur < 2 * INPUT_CHUNK)) \
306: xmlParserInputShrink(ctxt->input)
307:
308: #define GROW if ((ctxt->progressive == 0) && \
309: (ctxt->input->end - ctxt->input->cur < INPUT_CHUNK)) \
310: xmlParserInputGrow(ctxt->input, INPUT_CHUNK)
311:
312: #define CURRENT ((int) (*ctxt->input->cur))
313:
314: #define SKIP_BLANKS htmlSkipBlankChars(ctxt)
315:
316: /* Inported from XML */
317:
318: /* #define CUR (ctxt->token ? ctxt->token : (int) (*ctxt->input->cur)) */
319: #define CUR ((int) (*ctxt->input->cur))
320: #define NEXT xmlNextChar(ctxt)
321:
322: #define RAW (ctxt->token ? -1 : (*ctxt->input->cur))
323:
324:
325: #define NEXTL(l) do { \
326: if (*(ctxt->input->cur) == '\n') { \
327: ctxt->input->line++; ctxt->input->col = 1; \
328: } else ctxt->input->col++; \
329: ctxt->token = 0; ctxt->input->cur += l; ctxt->nbChars++; \
330: } while (0)
331:
332: /************
333: \
334: if (*ctxt->input->cur == '%') xmlParserHandlePEReference(ctxt); \
335: if (*ctxt->input->cur == '&') xmlParserHandleReference(ctxt);
336: ************/
337:
338: #define CUR_CHAR(l) htmlCurrentChar(ctxt, &l)
339: #define CUR_SCHAR(s, l) xmlStringCurrentChar(ctxt, s, &l)
340:
341: #define COPY_BUF(l,b,i,v) \
342: if (l == 1) b[i++] = (xmlChar) v; \
343: else i += xmlCopyChar(l,&b[i],v)
344:
345: /**
346: * htmlFindEncoding:
347: * @the HTML parser context
348: *
349: * Ty to find and encoding in the current data available in the input
350: * buffer this is needed to try to switch to the proper encoding when
351: * one face a character error.
352: * That's an heuristic, since it's operating outside of parsing it could
353: * try to use a meta which had been commented out, that's the reason it
354: * should only be used in case of error, not as a default.
355: *
356: * Returns an encoding string or NULL if not found, the string need to
357: * be freed
358: */
359: static xmlChar *
360: htmlFindEncoding(xmlParserCtxtPtr ctxt) {
361: const xmlChar *start, *cur, *end;
362:
363: if ((ctxt == NULL) || (ctxt->input == NULL) ||
364: (ctxt->input->encoding != NULL) || (ctxt->input->buf == NULL) ||
365: (ctxt->input->buf->encoder != NULL))
366: return(NULL);
367: if ((ctxt->input->cur == NULL) || (ctxt->input->end == NULL))
368: return(NULL);
369:
370: start = ctxt->input->cur;
371: end = ctxt->input->end;
372: /* we also expect the input buffer to be zero terminated */
373: if (*end != 0)
374: return(NULL);
375:
376: cur = xmlStrcasestr(start, BAD_CAST "HTTP-EQUIV");
377: if (cur == NULL)
378: return(NULL);
379: cur = xmlStrcasestr(cur, BAD_CAST "CONTENT");
380: if (cur == NULL)
381: return(NULL);
382: cur = xmlStrcasestr(cur, BAD_CAST "CHARSET=");
383: if (cur == NULL)
384: return(NULL);
385: cur += 8;
386: start = cur;
387: while (((*cur >= 'A') && (*cur <= 'Z')) ||
388: ((*cur >= 'a') && (*cur <= 'z')) ||
389: ((*cur >= '0') && (*cur <= '9')) ||
390: (*cur == '-') || (*cur == '_') || (*cur == ':') || (*cur == '/'))
391: cur++;
392: if (cur == start)
393: return(NULL);
394: return(xmlStrndup(start, cur - start));
395: }
396:
397: /**
398: * htmlCurrentChar:
399: * @ctxt: the HTML parser context
400: * @len: pointer to the length of the char read
401: *
402: * The current char value, if using UTF-8 this may actually span multiple
403: * bytes in the input buffer. Implement the end of line normalization:
404: * 2.11 End-of-Line Handling
405: * If the encoding is unspecified, in the case we find an ISO-Latin-1
406: * char, then the encoding converter is plugged in automatically.
407: *
408: * Returns the current char value and its length
409: */
410:
411: static int
412: htmlCurrentChar(xmlParserCtxtPtr ctxt, int *len) {
413: if (ctxt->instate == XML_PARSER_EOF)
414: return(0);
415:
416: if (ctxt->token != 0) {
417: *len = 0;
418: return(ctxt->token);
419: }
420: if (ctxt->charset == XML_CHAR_ENCODING_UTF8) {
421: /*
422: * We are supposed to handle UTF8, check it's valid
423: * From rfc2044: encoding of the Unicode values on UTF-8:
424: *
425: * UCS-4 range (hex.) UTF-8 octet sequence (binary)
426: * 0000 0000-0000 007F 0xxxxxxx
427: * 0000 0080-0000 07FF 110xxxxx 10xxxxxx
428: * 0000 0800-0000 FFFF 1110xxxx 10xxxxxx 10xxxxxx
429: *
430: * Check for the 0x110000 limit too
431: */
432: const unsigned char *cur = ctxt->input->cur;
433: unsigned char c;
434: unsigned int val;
435:
436: c = *cur;
437: if (c & 0x80) {
438: if (cur[1] == 0) {
439: xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
440: cur = ctxt->input->cur;
441: }
442: if ((cur[1] & 0xc0) != 0x80)
443: goto encoding_error;
444: if ((c & 0xe0) == 0xe0) {
445:
446: if (cur[2] == 0) {
447: xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
448: cur = ctxt->input->cur;
449: }
450: if ((cur[2] & 0xc0) != 0x80)
451: goto encoding_error;
452: if ((c & 0xf0) == 0xf0) {
453: if (cur[3] == 0) {
454: xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
455: cur = ctxt->input->cur;
456: }
457: if (((c & 0xf8) != 0xf0) ||
458: ((cur[3] & 0xc0) != 0x80))
459: goto encoding_error;
460: /* 4-byte code */
461: *len = 4;
462: val = (cur[0] & 0x7) << 18;
463: val |= (cur[1] & 0x3f) << 12;
464: val |= (cur[2] & 0x3f) << 6;
465: val |= cur[3] & 0x3f;
466: } else {
467: /* 3-byte code */
468: *len = 3;
469: val = (cur[0] & 0xf) << 12;
470: val |= (cur[1] & 0x3f) << 6;
471: val |= cur[2] & 0x3f;
472: }
473: } else {
474: /* 2-byte code */
475: *len = 2;
476: val = (cur[0] & 0x1f) << 6;
477: val |= cur[1] & 0x3f;
478: }
479: if (!IS_CHAR(val)) {
480: htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
481: "Char 0x%X out of allowed range\n", val);
482: }
483: return(val);
484: } else {
485: if ((*ctxt->input->cur == 0) &&
486: (ctxt->input->cur < ctxt->input->end)) {
487: htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
488: "Char 0x%X out of allowed range\n", 0);
489: *len = 1;
490: return(' ');
491: }
492: /* 1-byte code */
493: *len = 1;
494: return((int) *ctxt->input->cur);
495: }
496: }
497: /*
498: * Assume it's a fixed length encoding (1) with
499: * a compatible encoding for the ASCII set, since
500: * XML constructs only use < 128 chars
501: */
502: *len = 1;
503: if ((int) *ctxt->input->cur < 0x80)
504: return((int) *ctxt->input->cur);
505:
506: /*
507: * Humm this is bad, do an automatic flow conversion
508: */
509: {
510: xmlChar * guess;
511: xmlCharEncodingHandlerPtr handler;
512:
513: guess = htmlFindEncoding(ctxt);
514: if (guess == NULL) {
515: xmlSwitchEncoding(ctxt, XML_CHAR_ENCODING_8859_1);
516: } else {
517: if (ctxt->input->encoding != NULL)
518: xmlFree((xmlChar *) ctxt->input->encoding);
519: ctxt->input->encoding = guess;
520: handler = xmlFindCharEncodingHandler((const char *) guess);
521: if (handler != NULL) {
522: xmlSwitchToEncoding(ctxt, handler);
523: } else {
524: htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
525: "Unsupported encoding %s", guess, NULL);
526: }
527: }
528: ctxt->charset = XML_CHAR_ENCODING_UTF8;
529: }
530:
531: return(xmlCurrentChar(ctxt, len));
532:
533: encoding_error:
534: /*
535: * If we detect an UTF8 error that probably mean that the
536: * input encoding didn't get properly advertized in the
537: * declaration header. Report the error and switch the encoding
538: * to ISO-Latin-1 (if you don't like this policy, just declare the
539: * encoding !)
540: */
541: {
542: char buffer[150];
543:
544: if (ctxt->input->end - ctxt->input->cur >= 4) {
545: snprintf(buffer, 149, "Bytes: 0x%02X 0x%02X 0x%02X 0x%02X\n",
546: ctxt->input->cur[0], ctxt->input->cur[1],
547: ctxt->input->cur[2], ctxt->input->cur[3]);
548: } else {
549: snprintf(buffer, 149, "Bytes: 0x%02X\n", ctxt->input->cur[0]);
550: }
551: htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
552: "Input is not proper UTF-8, indicate encoding !\n",
553: BAD_CAST buffer, NULL);
554: }
555:
556: ctxt->charset = XML_CHAR_ENCODING_8859_1;
557: *len = 1;
558: return((int) *ctxt->input->cur);
559: }
560:
561: /**
562: * htmlSkipBlankChars:
563: * @ctxt: the HTML parser context
564: *
565: * skip all blanks character found at that point in the input streams.
566: *
567: * Returns the number of space chars skipped
568: */
569:
570: static int
571: htmlSkipBlankChars(xmlParserCtxtPtr ctxt) {
572: int res = 0;
573:
574: while (IS_BLANK_CH(*(ctxt->input->cur))) {
575: if ((*ctxt->input->cur == 0) &&
576: (xmlParserInputGrow(ctxt->input, INPUT_CHUNK) <= 0)) {
577: xmlPopInput(ctxt);
578: } else {
579: if (*(ctxt->input->cur) == '\n') {
580: ctxt->input->line++; ctxt->input->col = 1;
581: } else ctxt->input->col++;
582: ctxt->input->cur++;
583: ctxt->nbChars++;
584: if (*ctxt->input->cur == 0)
585: xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
586: }
587: res++;
588: }
589: return(res);
590: }
591:
592:
593:
594: /************************************************************************
595: * *
596: * The list of HTML elements and their properties *
597: * *
598: ************************************************************************/
599:
600: /*
601: * Start Tag: 1 means the start tag can be ommited
602: * End Tag: 1 means the end tag can be ommited
603: * 2 means it's forbidden (empty elements)
604: * 3 means the tag is stylistic and should be closed easily
605: * Depr: this element is deprecated
606: * DTD: 1 means that this element is valid only in the Loose DTD
607: * 2 means that this element is valid only in the Frameset DTD
608: *
609: * Name,Start Tag,End Tag,Save End,Empty,Deprecated,DTD,inline,Description
610: , subElements , impliedsubelt , Attributes, userdata
611: */
612:
613: /* Definitions and a couple of vars for HTML Elements */
614:
615: #define FONTSTYLE "tt", "i", "b", "u", "s", "strike", "big", "small"
616: #define NB_FONTSTYLE 8
617: #define PHRASE "em", "strong", "dfn", "code", "samp", "kbd", "var", "cite", "abbr", "acronym"
618: #define NB_PHRASE 10
619: #define SPECIAL "a", "img", "applet", "embed", "object", "font", "basefont", "br", "script", "map", "q", "sub", "sup", "span", "bdo", "iframe"
620: #define NB_SPECIAL 16
621: #define INLINE FONTSTYLE, PHRASE, SPECIAL, FORMCTRL
622: #define NB_INLINE NB_PCDATA + NB_FONTSTYLE + NB_PHRASE + NB_SPECIAL + NB_FORMCTRL
623: #define BLOCK HEADING, LIST, "pre", "p", "dl", "div", "center", "noscript", "noframes", "blockquote", "form", "isindex", "hr", "table", "fieldset", "address"
624: #define NB_BLOCK NB_HEADING + NB_LIST + 14
625: #define FORMCTRL "input", "select", "textarea", "label", "button"
626: #define NB_FORMCTRL 5
627: #define PCDATA
628: #define NB_PCDATA 0
629: #define HEADING "h1", "h2", "h3", "h4", "h5", "h6"
630: #define NB_HEADING 6
631: #define LIST "ul", "ol", "dir", "menu"
632: #define NB_LIST 4
633: #define MODIFIER
634: #define NB_MODIFIER 0
635: #define FLOW BLOCK,INLINE
636: #define NB_FLOW NB_BLOCK + NB_INLINE
637: #define EMPTY NULL
638:
639:
640: static const char* const html_flow[] = { FLOW, NULL } ;
641: static const char* const html_inline[] = { INLINE, NULL } ;
642:
643: /* placeholders: elts with content but no subelements */
644: static const char* const html_pcdata[] = { NULL } ;
645: #define html_cdata html_pcdata
646:
647:
648: /* ... and for HTML Attributes */
649:
650: #define COREATTRS "id", "class", "style", "title"
651: #define NB_COREATTRS 4
652: #define I18N "lang", "dir"
653: #define NB_I18N 2
654: #define EVENTS "onclick", "ondblclick", "onmousedown", "onmouseup", "onmouseover", "onmouseout", "onkeypress", "onkeydown", "onkeyup"
655: #define NB_EVENTS 9
656: #define ATTRS COREATTRS,I18N,EVENTS
657: #define NB_ATTRS NB_NB_COREATTRS + NB_I18N + NB_EVENTS
658: #define CELLHALIGN "align", "char", "charoff"
659: #define NB_CELLHALIGN 3
660: #define CELLVALIGN "valign"
661: #define NB_CELLVALIGN 1
662:
663: static const char* const html_attrs[] = { ATTRS, NULL } ;
664: static const char* const core_i18n_attrs[] = { COREATTRS, I18N, NULL } ;
665: static const char* const core_attrs[] = { COREATTRS, NULL } ;
666: static const char* const i18n_attrs[] = { I18N, NULL } ;
667:
668:
669: /* Other declarations that should go inline ... */
670: static const char* const a_attrs[] = { ATTRS, "charset", "type", "name",
671: "href", "hreflang", "rel", "rev", "accesskey", "shape", "coords",
672: "tabindex", "onfocus", "onblur", NULL } ;
673: static const char* const target_attr[] = { "target", NULL } ;
674: static const char* const rows_cols_attr[] = { "rows", "cols", NULL } ;
675: static const char* const alt_attr[] = { "alt", NULL } ;
676: static const char* const src_alt_attrs[] = { "src", "alt", NULL } ;
677: static const char* const href_attrs[] = { "href", NULL } ;
678: static const char* const clear_attrs[] = { "clear", NULL } ;
679: static const char* const inline_p[] = { INLINE, "p", NULL } ;
680:
681: static const char* const flow_param[] = { FLOW, "param", NULL } ;
682: static const char* const applet_attrs[] = { COREATTRS , "codebase",
683: "archive", "alt", "name", "height", "width", "align",
684: "hspace", "vspace", NULL } ;
685: static const char* const area_attrs[] = { "shape", "coords", "href", "nohref",
686: "tabindex", "accesskey", "onfocus", "onblur", NULL } ;
687: static const char* const basefont_attrs[] =
688: { "id", "size", "color", "face", NULL } ;
689: static const char* const quote_attrs[] = { ATTRS, "cite", NULL } ;
690: static const char* const body_contents[] = { FLOW, "ins", "del", NULL } ;
691: static const char* const body_attrs[] = { ATTRS, "onload", "onunload", NULL } ;
692: static const char* const body_depr[] = { "background", "bgcolor", "text",
693: "link", "vlink", "alink", NULL } ;
694: static const char* const button_attrs[] = { ATTRS, "name", "value", "type",
695: "disabled", "tabindex", "accesskey", "onfocus", "onblur", NULL } ;
696:
697:
698: static const char* const col_attrs[] = { ATTRS, "span", "width", CELLHALIGN, CELLVALIGN, NULL } ;
699: static const char* const col_elt[] = { "col", NULL } ;
700: static const char* const edit_attrs[] = { ATTRS, "datetime", "cite", NULL } ;
701: static const char* const compact_attrs[] = { ATTRS, "compact", NULL } ;
702: static const char* const dl_contents[] = { "dt", "dd", NULL } ;
703: static const char* const compact_attr[] = { "compact", NULL } ;
704: static const char* const label_attr[] = { "label", NULL } ;
705: static const char* const fieldset_contents[] = { FLOW, "legend" } ;
706: static const char* const font_attrs[] = { COREATTRS, I18N, "size", "color", "face" , NULL } ;
707: static const char* const form_contents[] = { HEADING, LIST, INLINE, "pre", "p", "div", "center", "noscript", "noframes", "blockquote", "isindex", "hr", "table", "fieldset", "address", NULL } ;
708: static const char* const form_attrs[] = { ATTRS, "method", "enctype", "accept", "name", "onsubmit", "onreset", "accept-charset", NULL } ;
709: static const char* const frame_attrs[] = { COREATTRS, "longdesc", "name", "src", "frameborder", "marginwidth", "marginheight", "noresize", "scrolling" , NULL } ;
710: static const char* const frameset_attrs[] = { COREATTRS, "rows", "cols", "onload", "onunload", NULL } ;
711: static const char* const frameset_contents[] = { "frameset", "frame", "noframes", NULL } ;
712: static const char* const head_attrs[] = { I18N, "profile", NULL } ;
713: static const char* const head_contents[] = { "title", "isindex", "base", "script", "style", "meta", "link", "object", NULL } ;
714: static const char* const hr_depr[] = { "align", "noshade", "size", "width", NULL } ;
715: static const char* const version_attr[] = { "version", NULL } ;
716: static const char* const html_content[] = { "head", "body", "frameset", NULL } ;
717: static const char* const iframe_attrs[] = { COREATTRS, "longdesc", "name", "src", "frameborder", "marginwidth", "marginheight", "scrolling", "align", "height", "width", NULL } ;
718: static const char* const img_attrs[] = { ATTRS, "longdesc", "name", "height", "width", "usemap", "ismap", NULL } ;
719: static const char* const embed_attrs[] = { COREATTRS, "align", "alt", "border", "code", "codebase", "frameborder", "height", "hidden", "hspace", "name", "palette", "pluginspace", "pluginurl", "src", "type", "units", "vspace", "width", NULL } ;
720: static const char* const input_attrs[] = { ATTRS, "type", "name", "value", "checked", "disabled", "readonly", "size", "maxlength", "src", "alt", "usemap", "ismap", "tabindex", "accesskey", "onfocus", "onblur", "onselect", "onchange", "accept", NULL } ;
721: static const char* const prompt_attrs[] = { COREATTRS, I18N, "prompt", NULL } ;
722: static const char* const label_attrs[] = { ATTRS, "for", "accesskey", "onfocus", "onblur", NULL } ;
723: static const char* const legend_attrs[] = { ATTRS, "accesskey", NULL } ;
724: static const char* const align_attr[] = { "align", NULL } ;
725: static const char* const link_attrs[] = { ATTRS, "charset", "href", "hreflang", "type", "rel", "rev", "media", NULL } ;
726: static const char* const map_contents[] = { BLOCK, "area", NULL } ;
727: static const char* const name_attr[] = { "name", NULL } ;
728: static const char* const action_attr[] = { "action", NULL } ;
729: static const char* const blockli_elt[] = { BLOCK, "li", NULL } ;
730: static const char* const meta_attrs[] = { I18N, "http-equiv", "name", "scheme", NULL } ;
731: static const char* const content_attr[] = { "content", NULL } ;
732: static const char* const type_attr[] = { "type", NULL } ;
733: static const char* const noframes_content[] = { "body", FLOW MODIFIER, NULL } ;
734: static const char* const object_contents[] = { FLOW, "param", NULL } ;
735: static const char* const object_attrs[] = { ATTRS, "declare", "classid", "codebase", "data", "type", "codetype", "archive", "standby", "height", "width", "usemap", "name", "tabindex", NULL } ;
736: static const char* const object_depr[] = { "align", "border", "hspace", "vspace", NULL } ;
737: static const char* const ol_attrs[] = { "type", "compact", "start", NULL} ;
738: static const char* const option_elt[] = { "option", NULL } ;
739: static const char* const optgroup_attrs[] = { ATTRS, "disabled", NULL } ;
740: static const char* const option_attrs[] = { ATTRS, "disabled", "label", "selected", "value", NULL } ;
741: static const char* const param_attrs[] = { "id", "value", "valuetype", "type", NULL } ;
742: static const char* const width_attr[] = { "width", NULL } ;
743: static const char* const pre_content[] = { PHRASE, "tt", "i", "b", "u", "s", "strike", "a", "br", "script", "map", "q", "span", "bdo", "iframe", NULL } ;
744: static const char* const script_attrs[] = { "charset", "src", "defer", "event", "for", NULL } ;
745: static const char* const language_attr[] = { "language", NULL } ;
746: static const char* const select_content[] = { "optgroup", "option", NULL } ;
747: static const char* const select_attrs[] = { ATTRS, "name", "size", "multiple", "disabled", "tabindex", "onfocus", "onblur", "onchange", NULL } ;
748: static const char* const style_attrs[] = { I18N, "media", "title", NULL } ;
749: static const char* const table_attrs[] = { ATTRS, "summary", "width", "border", "frame", "rules", "cellspacing", "cellpadding", "datapagesize", NULL } ;
750: static const char* const table_depr[] = { "align", "bgcolor", NULL } ;
751: static const char* const table_contents[] = { "caption", "col", "colgroup", "thead", "tfoot", "tbody", "tr", NULL} ;
752: static const char* const tr_elt[] = { "tr", NULL } ;
753: static const char* const talign_attrs[] = { ATTRS, CELLHALIGN, CELLVALIGN, NULL} ;
754: static const char* const th_td_depr[] = { "nowrap", "bgcolor", "width", "height", NULL } ;
755: static const char* const th_td_attr[] = { ATTRS, "abbr", "axis", "headers", "scope", "rowspan", "colspan", CELLHALIGN, CELLVALIGN, NULL } ;
756: static const char* const textarea_attrs[] = { ATTRS, "name", "disabled", "readonly", "tabindex", "accesskey", "onfocus", "onblur", "onselect", "onchange", NULL } ;
757: static const char* const tr_contents[] = { "th", "td", NULL } ;
758: static const char* const bgcolor_attr[] = { "bgcolor", NULL } ;
759: static const char* const li_elt[] = { "li", NULL } ;
760: static const char* const ul_depr[] = { "type", "compact", NULL} ;
761: static const char* const dir_attr[] = { "dir", NULL} ;
762:
763: #define DECL (const char**)
764:
765: static const htmlElemDesc
766: html40ElementTable[] = {
767: { "a", 0, 0, 0, 0, 0, 0, 1, "anchor ",
768: DECL html_inline , NULL , DECL a_attrs , DECL target_attr, NULL
769: },
770: { "abbr", 0, 0, 0, 0, 0, 0, 1, "abbreviated form",
771: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
772: },
773: { "acronym", 0, 0, 0, 0, 0, 0, 1, "",
774: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
775: },
776: { "address", 0, 0, 0, 0, 0, 0, 0, "information on author ",
777: DECL inline_p , NULL , DECL html_attrs, NULL, NULL
778: },
779: { "applet", 0, 0, 0, 0, 1, 1, 2, "java applet ",
780: DECL flow_param , NULL , NULL , DECL applet_attrs, NULL
781: },
782: { "area", 0, 2, 2, 1, 0, 0, 0, "client-side image map area ",
783: EMPTY , NULL , DECL area_attrs , DECL target_attr, DECL alt_attr
784: },
785: { "b", 0, 3, 0, 0, 0, 0, 1, "bold text style",
786: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
787: },
788: { "base", 0, 2, 2, 1, 0, 0, 0, "document base uri ",
789: EMPTY , NULL , NULL , DECL target_attr, DECL href_attrs
790: },
791: { "basefont", 0, 2, 2, 1, 1, 1, 1, "base font size " ,
792: EMPTY , NULL , NULL, DECL basefont_attrs, NULL
793: },
794: { "bdo", 0, 0, 0, 0, 0, 0, 1, "i18n bidi over-ride ",
795: DECL html_inline , NULL , DECL core_i18n_attrs, NULL, DECL dir_attr
796: },
797: { "big", 0, 3, 0, 0, 0, 0, 1, "large text style",
798: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
799: },
800: { "blockquote", 0, 0, 0, 0, 0, 0, 0, "long quotation ",
801: DECL html_flow , NULL , DECL quote_attrs , NULL, NULL
802: },
803: { "body", 1, 1, 0, 0, 0, 0, 0, "document body ",
804: DECL body_contents , "div" , DECL body_attrs, DECL body_depr, NULL
805: },
806: { "br", 0, 2, 2, 1, 0, 0, 1, "forced line break ",
807: EMPTY , NULL , DECL core_attrs, DECL clear_attrs , NULL
808: },
809: { "button", 0, 0, 0, 0, 0, 0, 2, "push button ",
810: DECL html_flow MODIFIER , NULL , DECL button_attrs, NULL, NULL
811: },
812: { "caption", 0, 0, 0, 0, 0, 0, 0, "table caption ",
813: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
814: },
815: { "center", 0, 3, 0, 0, 1, 1, 0, "shorthand for div align=center ",
816: DECL html_flow , NULL , NULL, DECL html_attrs, NULL
817: },
818: { "cite", 0, 0, 0, 0, 0, 0, 1, "citation",
819: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
820: },
821: { "code", 0, 0, 0, 0, 0, 0, 1, "computer code fragment",
822: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
823: },
824: { "col", 0, 2, 2, 1, 0, 0, 0, "table column ",
825: EMPTY , NULL , DECL col_attrs , NULL, NULL
826: },
827: { "colgroup", 0, 1, 0, 0, 0, 0, 0, "table column group ",
828: DECL col_elt , "col" , DECL col_attrs , NULL, NULL
829: },
830: { "dd", 0, 1, 0, 0, 0, 0, 0, "definition description ",
831: DECL html_flow , NULL , DECL html_attrs, NULL, NULL
832: },
833: { "del", 0, 0, 0, 0, 0, 0, 2, "deleted text ",
834: DECL html_flow , NULL , DECL edit_attrs , NULL, NULL
835: },
836: { "dfn", 0, 0, 0, 0, 0, 0, 1, "instance definition",
837: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
838: },
839: { "dir", 0, 0, 0, 0, 1, 1, 0, "directory list",
840: DECL blockli_elt, "li" , NULL, DECL compact_attrs, NULL
841: },
842: { "div", 0, 0, 0, 0, 0, 0, 0, "generic language/style container",
843: DECL html_flow, NULL, DECL html_attrs, DECL align_attr, NULL
844: },
845: { "dl", 0, 0, 0, 0, 0, 0, 0, "definition list ",
846: DECL dl_contents , "dd" , DECL html_attrs, DECL compact_attr, NULL
847: },
848: { "dt", 0, 1, 0, 0, 0, 0, 0, "definition term ",
849: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
850: },
851: { "em", 0, 3, 0, 0, 0, 0, 1, "emphasis",
852: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
853: },
854: { "embed", 0, 1, 0, 0, 1, 1, 1, "generic embedded object ",
855: EMPTY, NULL, DECL embed_attrs, NULL, NULL
856: },
857: { "fieldset", 0, 0, 0, 0, 0, 0, 0, "form control group ",
858: DECL fieldset_contents , NULL, DECL html_attrs, NULL, NULL
859: },
860: { "font", 0, 3, 0, 0, 1, 1, 1, "local change to font ",
861: DECL html_inline, NULL, NULL, DECL font_attrs, NULL
862: },
863: { "form", 0, 0, 0, 0, 0, 0, 0, "interactive form ",
864: DECL form_contents, "fieldset", DECL form_attrs , DECL target_attr, DECL action_attr
865: },
866: { "frame", 0, 2, 2, 1, 0, 2, 0, "subwindow " ,
867: EMPTY, NULL, NULL, DECL frame_attrs, NULL
868: },
869: { "frameset", 0, 0, 0, 0, 0, 2, 0, "window subdivision" ,
870: DECL frameset_contents, "noframes" , NULL , DECL frameset_attrs, NULL
871: },
872: { "h1", 0, 0, 0, 0, 0, 0, 0, "heading ",
873: DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
874: },
875: { "h2", 0, 0, 0, 0, 0, 0, 0, "heading ",
876: DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
877: },
878: { "h3", 0, 0, 0, 0, 0, 0, 0, "heading ",
879: DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
880: },
881: { "h4", 0, 0, 0, 0, 0, 0, 0, "heading ",
882: DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
883: },
884: { "h5", 0, 0, 0, 0, 0, 0, 0, "heading ",
885: DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
886: },
887: { "h6", 0, 0, 0, 0, 0, 0, 0, "heading ",
888: DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
889: },
890: { "head", 1, 1, 0, 0, 0, 0, 0, "document head ",
891: DECL head_contents, NULL, DECL head_attrs, NULL, NULL
892: },
893: { "hr", 0, 2, 2, 1, 0, 0, 0, "horizontal rule " ,
894: EMPTY, NULL, DECL html_attrs, DECL hr_depr, NULL
895: },
896: { "html", 1, 1, 0, 0, 0, 0, 0, "document root element ",
897: DECL html_content , NULL , DECL i18n_attrs, DECL version_attr, NULL
898: },
899: { "i", 0, 3, 0, 0, 0, 0, 1, "italic text style",
900: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
901: },
902: { "iframe", 0, 0, 0, 0, 0, 1, 2, "inline subwindow ",
903: DECL html_flow, NULL, NULL, DECL iframe_attrs, NULL
904: },
905: { "img", 0, 2, 2, 1, 0, 0, 1, "embedded image ",
906: EMPTY, NULL, DECL img_attrs, DECL align_attr, DECL src_alt_attrs
907: },
908: { "input", 0, 2, 2, 1, 0, 0, 1, "form control ",
909: EMPTY, NULL, DECL input_attrs , DECL align_attr, NULL
910: },
911: { "ins", 0, 0, 0, 0, 0, 0, 2, "inserted text",
912: DECL html_flow, NULL, DECL edit_attrs, NULL, NULL
913: },
914: { "isindex", 0, 2, 2, 1, 1, 1, 0, "single line prompt ",
915: EMPTY, NULL, NULL, DECL prompt_attrs, NULL
916: },
917: { "kbd", 0, 0, 0, 0, 0, 0, 1, "text to be entered by the user",
918: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
919: },
920: { "label", 0, 0, 0, 0, 0, 0, 1, "form field label text ",
921: DECL html_inline MODIFIER, NULL, DECL label_attrs , NULL, NULL
922: },
923: { "legend", 0, 0, 0, 0, 0, 0, 0, "fieldset legend ",
924: DECL html_inline, NULL, DECL legend_attrs , DECL align_attr, NULL
925: },
926: { "li", 0, 1, 1, 0, 0, 0, 0, "list item ",
927: DECL html_flow, NULL, DECL html_attrs, NULL, NULL
928: },
929: { "link", 0, 2, 2, 1, 0, 0, 0, "a media-independent link ",
930: EMPTY, NULL, DECL link_attrs, DECL target_attr, NULL
931: },
932: { "map", 0, 0, 0, 0, 0, 0, 2, "client-side image map ",
933: DECL map_contents , NULL, DECL html_attrs , NULL, DECL name_attr
934: },
935: { "menu", 0, 0, 0, 0, 1, 1, 0, "menu list ",
936: DECL blockli_elt , NULL, NULL, DECL compact_attrs, NULL
937: },
938: { "meta", 0, 2, 2, 1, 0, 0, 0, "generic metainformation ",
939: EMPTY, NULL, DECL meta_attrs , NULL , DECL content_attr
940: },
941: { "noframes", 0, 0, 0, 0, 0, 2, 0, "alternate content container for non frame-based rendering ",
942: DECL noframes_content, "body" , DECL html_attrs, NULL, NULL
943: },
944: { "noscript", 0, 0, 0, 0, 0, 0, 0, "alternate content container for non script-based rendering ",
945: DECL html_flow, "div", DECL html_attrs, NULL, NULL
946: },
947: { "object", 0, 0, 0, 0, 0, 0, 2, "generic embedded object ",
948: DECL object_contents , "div" , DECL object_attrs, DECL object_depr, NULL
949: },
950: { "ol", 0, 0, 0, 0, 0, 0, 0, "ordered list ",
951: DECL li_elt , "li" , DECL html_attrs, DECL ol_attrs, NULL
952: },
953: { "optgroup", 0, 0, 0, 0, 0, 0, 0, "option group ",
954: DECL option_elt , "option", DECL optgroup_attrs, NULL, DECL label_attr
955: },
956: { "option", 0, 1, 0, 0, 0, 0, 0, "selectable choice " ,
957: DECL html_pcdata, NULL, DECL option_attrs, NULL, NULL
958: },
959: { "p", 0, 1, 0, 0, 0, 0, 0, "paragraph ",
960: DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
961: },
962: { "param", 0, 2, 2, 1, 0, 0, 0, "named property value ",
963: EMPTY, NULL, DECL param_attrs, NULL, DECL name_attr
964: },
965: { "pre", 0, 0, 0, 0, 0, 0, 0, "preformatted text ",
966: DECL pre_content, NULL, DECL html_attrs, DECL width_attr, NULL
967: },
968: { "q", 0, 0, 0, 0, 0, 0, 1, "short inline quotation ",
969: DECL html_inline, NULL, DECL quote_attrs, NULL, NULL
970: },
971: { "s", 0, 3, 0, 0, 1, 1, 1, "strike-through text style",
972: DECL html_inline, NULL, NULL, DECL html_attrs, NULL
973: },
974: { "samp", 0, 0, 0, 0, 0, 0, 1, "sample program output, scripts, etc.",
975: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
976: },
977: { "script", 0, 0, 0, 0, 0, 0, 2, "script statements ",
978: DECL html_cdata, NULL, DECL script_attrs, DECL language_attr, DECL type_attr
979: },
980: { "select", 0, 0, 0, 0, 0, 0, 1, "option selector ",
981: DECL select_content, NULL, DECL select_attrs, NULL, NULL
982: },
983: { "small", 0, 3, 0, 0, 0, 0, 1, "small text style",
984: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
985: },
986: { "span", 0, 0, 0, 0, 0, 0, 1, "generic language/style container ",
987: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
988: },
989: { "strike", 0, 3, 0, 0, 1, 1, 1, "strike-through text",
990: DECL html_inline, NULL, NULL, DECL html_attrs, NULL
991: },
992: { "strong", 0, 3, 0, 0, 0, 0, 1, "strong emphasis",
993: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
994: },
995: { "style", 0, 0, 0, 0, 0, 0, 0, "style info ",
996: DECL html_cdata, NULL, DECL style_attrs, NULL, DECL type_attr
997: },
998: { "sub", 0, 3, 0, 0, 0, 0, 1, "subscript",
999: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
1000: },
1001: { "sup", 0, 3, 0, 0, 0, 0, 1, "superscript ",
1002: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
1003: },
1004: { "table", 0, 0, 0, 0, 0, 0, 0, "",
1005: DECL table_contents , "tr" , DECL table_attrs , DECL table_depr, NULL
1006: },
1007: { "tbody", 1, 0, 0, 0, 0, 0, 0, "table body ",
1008: DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL
1009: },
1010: { "td", 0, 0, 0, 0, 0, 0, 0, "table data cell",
1011: DECL html_flow, NULL, DECL th_td_attr, DECL th_td_depr, NULL
1012: },
1013: { "textarea", 0, 0, 0, 0, 0, 0, 1, "multi-line text field ",
1014: DECL html_pcdata, NULL, DECL textarea_attrs, NULL, DECL rows_cols_attr
1015: },
1016: { "tfoot", 0, 1, 0, 0, 0, 0, 0, "table footer ",
1017: DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL
1018: },
1019: { "th", 0, 1, 0, 0, 0, 0, 0, "table header cell",
1020: DECL html_flow, NULL, DECL th_td_attr, DECL th_td_depr, NULL
1021: },
1022: { "thead", 0, 1, 0, 0, 0, 0, 0, "table header ",
1023: DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL
1024: },
1025: { "title", 0, 0, 0, 0, 0, 0, 0, "document title ",
1026: DECL html_pcdata, NULL, DECL i18n_attrs, NULL, NULL
1027: },
1028: { "tr", 0, 0, 0, 0, 0, 0, 0, "table row ",
1029: DECL tr_contents , "td" , DECL talign_attrs, DECL bgcolor_attr, NULL
1030: },
1031: { "tt", 0, 3, 0, 0, 0, 0, 1, "teletype or monospaced text style",
1032: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
1033: },
1034: { "u", 0, 3, 0, 0, 1, 1, 1, "underlined text style",
1035: DECL html_inline, NULL, NULL, DECL html_attrs, NULL
1036: },
1037: { "ul", 0, 0, 0, 0, 0, 0, 0, "unordered list ",
1038: DECL li_elt , "li" , DECL html_attrs, DECL ul_depr, NULL
1039: },
1040: { "var", 0, 0, 0, 0, 0, 0, 1, "instance of a variable or program argument",
1041: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
1042: }
1043: };
1044:
1045: /*
1046: * start tags that imply the end of current element
1047: */
1048: static const char * const htmlStartClose[] = {
1049: "form", "form", "p", "hr", "h1", "h2", "h3", "h4", "h5", "h6",
1050: "dl", "ul", "ol", "menu", "dir", "address", "pre",
1051: "listing", "xmp", "head", NULL,
1052: "head", "p", NULL,
1053: "title", "p", NULL,
1054: "body", "head", "style", "link", "title", "p", NULL,
1055: "frameset", "head", "style", "link", "title", "p", NULL,
1056: "li", "p", "h1", "h2", "h3", "h4", "h5", "h6", "dl", "address",
1057: "pre", "listing", "xmp", "head", "li", NULL,
1058: "hr", "p", "head", NULL,
1059: "h1", "p", "head", NULL,
1060: "h2", "p", "head", NULL,
1061: "h3", "p", "head", NULL,
1062: "h4", "p", "head", NULL,
1063: "h5", "p", "head", NULL,
1064: "h6", "p", "head", NULL,
1065: "dir", "p", "head", NULL,
1066: "address", "p", "head", "ul", NULL,
1067: "pre", "p", "head", "ul", NULL,
1068: "listing", "p", "head", NULL,
1069: "xmp", "p", "head", NULL,
1070: "blockquote", "p", "head", NULL,
1071: "dl", "p", "dt", "menu", "dir", "address", "pre", "listing",
1072: "xmp", "head", NULL,
1073: "dt", "p", "menu", "dir", "address", "pre", "listing", "xmp",
1074: "head", "dd", NULL,
1075: "dd", "p", "menu", "dir", "address", "pre", "listing", "xmp",
1076: "head", "dt", NULL,
1077: "ul", "p", "head", "ol", "menu", "dir", "address", "pre",
1078: "listing", "xmp", NULL,
1079: "ol", "p", "head", "ul", NULL,
1080: "menu", "p", "head", "ul", NULL,
1081: "p", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6", FONTSTYLE, NULL,
1082: "div", "p", "head", NULL,
1083: "noscript", "p", "head", NULL,
1084: "center", "font", "b", "i", "p", "head", NULL,
1085: "a", "a", NULL,
1086: "caption", "p", NULL,
1087: "colgroup", "caption", "colgroup", "col", "p", NULL,
1088: "col", "caption", "col", "p", NULL,
1089: "table", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6", "pre",
1090: "listing", "xmp", "a", NULL,
1091: "th", "th", "td", "p", "span", "font", "a", "b", "i", "u", NULL,
1092: "td", "th", "td", "p", "span", "font", "a", "b", "i", "u", NULL,
1093: "tr", "th", "td", "tr", "caption", "col", "colgroup", "p", NULL,
1094: "thead", "caption", "col", "colgroup", NULL,
1095: "tfoot", "th", "td", "tr", "caption", "col", "colgroup", "thead",
1096: "tbody", "p", NULL,
1097: "tbody", "th", "td", "tr", "caption", "col", "colgroup", "thead",
1098: "tfoot", "tbody", "p", NULL,
1099: "optgroup", "option", NULL,
1100: "option", "option", NULL,
1101: "fieldset", "legend", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6",
1102: "pre", "listing", "xmp", "a", NULL,
1103: NULL
1104: };
1105:
1106: /*
1107: * The list of HTML elements which are supposed not to have
1108: * CDATA content and where a p element will be implied
1109: *
1110: * TODO: extend that list by reading the HTML SGML DTD on
1111: * implied paragraph
1112: */
1113: static const char *const htmlNoContentElements[] = {
1114: "html",
1115: "head",
1116: NULL
1117: };
1118:
1119: /*
1120: * The list of HTML attributes which are of content %Script;
1121: * NOTE: when adding ones, check htmlIsScriptAttribute() since
1122: * it assumes the name starts with 'on'
1123: */
1124: static const char *const htmlScriptAttributes[] = {
1125: "onclick",
1126: "ondblclick",
1127: "onmousedown",
1128: "onmouseup",
1129: "onmouseover",
1130: "onmousemove",
1131: "onmouseout",
1132: "onkeypress",
1133: "onkeydown",
1134: "onkeyup",
1135: "onload",
1136: "onunload",
1137: "onfocus",
1138: "onblur",
1139: "onsubmit",
1140: "onrest",
1141: "onchange",
1142: "onselect"
1143: };
1144:
1145: /*
1146: * This table is used by the htmlparser to know what to do with
1147: * broken html pages. By assigning different priorities to different
1148: * elements the parser can decide how to handle extra endtags.
1149: * Endtags are only allowed to close elements with lower or equal
1150: * priority.
1151: */
1152:
1153: typedef struct {
1154: const char *name;
1155: int priority;
1156: } elementPriority;
1157:
1158: static const elementPriority htmlEndPriority[] = {
1159: {"div", 150},
1160: {"td", 160},
1161: {"th", 160},
1162: {"tr", 170},
1163: {"thead", 180},
1164: {"tbody", 180},
1165: {"tfoot", 180},
1166: {"table", 190},
1167: {"head", 200},
1168: {"body", 200},
1169: {"html", 220},
1170: {NULL, 100} /* Default priority */
1171: };
1172:
1173: static const char** htmlStartCloseIndex[100];
1174: static int htmlStartCloseIndexinitialized = 0;
1175:
1176: /************************************************************************
1177: * *
1178: * functions to handle HTML specific data *
1179: * *
1180: ************************************************************************/
1181:
1182: /**
1183: * htmlInitAutoClose:
1184: *
1185: * Initialize the htmlStartCloseIndex for fast lookup of closing tags names.
1186: * This is not reentrant. Call xmlInitParser() once before processing in
1187: * case of use in multithreaded programs.
1188: */
1189: void
1190: htmlInitAutoClose(void) {
1191: int indx, i = 0;
1192:
1193: if (htmlStartCloseIndexinitialized) return;
1194:
1195: for (indx = 0;indx < 100;indx ++) htmlStartCloseIndex[indx] = NULL;
1196: indx = 0;
1197: while ((htmlStartClose[i] != NULL) && (indx < 100 - 1)) {
1198: htmlStartCloseIndex[indx++] = (const char**) &htmlStartClose[i];
1199: while (htmlStartClose[i] != NULL) i++;
1200: i++;
1201: }
1202: htmlStartCloseIndexinitialized = 1;
1203: }
1204:
1205: /**
1206: * htmlTagLookup:
1207: * @tag: The tag name in lowercase
1208: *
1209: * Lookup the HTML tag in the ElementTable
1210: *
1211: * Returns the related htmlElemDescPtr or NULL if not found.
1212: */
1213: const htmlElemDesc *
1214: htmlTagLookup(const xmlChar *tag) {
1215: unsigned int i;
1216:
1217: for (i = 0; i < (sizeof(html40ElementTable) /
1218: sizeof(html40ElementTable[0]));i++) {
1219: if (!xmlStrcasecmp(tag, BAD_CAST html40ElementTable[i].name))
1220: return((htmlElemDescPtr) &html40ElementTable[i]);
1221: }
1222: return(NULL);
1223: }
1224:
1225: /**
1226: * htmlGetEndPriority:
1227: * @name: The name of the element to look up the priority for.
1228: *
1229: * Return value: The "endtag" priority.
1230: **/
1231: static int
1232: htmlGetEndPriority (const xmlChar *name) {
1233: int i = 0;
1234:
1235: while ((htmlEndPriority[i].name != NULL) &&
1236: (!xmlStrEqual((const xmlChar *)htmlEndPriority[i].name, name)))
1237: i++;
1238:
1239: return(htmlEndPriority[i].priority);
1240: }
1241:
1242:
1243: /**
1244: * htmlCheckAutoClose:
1245: * @newtag: The new tag name
1246: * @oldtag: The old tag name
1247: *
1248: * Checks whether the new tag is one of the registered valid tags for
1249: * closing old.
1250: * Initialize the htmlStartCloseIndex for fast lookup of closing tags names.
1251: *
1252: * Returns 0 if no, 1 if yes.
1253: */
1254: static int
1255: htmlCheckAutoClose(const xmlChar * newtag, const xmlChar * oldtag)
1256: {
1257: int i, indx;
1258: const char **closed = NULL;
1259:
1260: if (htmlStartCloseIndexinitialized == 0)
1261: htmlInitAutoClose();
1262:
1263: /* inefficient, but not a big deal */
1264: for (indx = 0; indx < 100; indx++) {
1265: closed = htmlStartCloseIndex[indx];
1266: if (closed == NULL)
1267: return (0);
1268: if (xmlStrEqual(BAD_CAST * closed, newtag))
1269: break;
1270: }
1271:
1272: i = closed - htmlStartClose;
1273: i++;
1274: while (htmlStartClose[i] != NULL) {
1275: if (xmlStrEqual(BAD_CAST htmlStartClose[i], oldtag)) {
1276: return (1);
1277: }
1278: i++;
1279: }
1280: return (0);
1281: }
1282:
1283: /**
1284: * htmlAutoCloseOnClose:
1285: * @ctxt: an HTML parser context
1286: * @newtag: The new tag name
1287: * @force: force the tag closure
1288: *
1289: * The HTML DTD allows an ending tag to implicitly close other tags.
1290: */
1291: static void
1292: htmlAutoCloseOnClose(htmlParserCtxtPtr ctxt, const xmlChar * newtag)
1293: {
1294: const htmlElemDesc *info;
1295: int i, priority;
1296:
1297: priority = htmlGetEndPriority(newtag);
1298:
1299: for (i = (ctxt->nameNr - 1); i >= 0; i--) {
1300:
1301: if (xmlStrEqual(newtag, ctxt->nameTab[i]))
1302: break;
1303: /*
1304: * A missplaced endtag can only close elements with lower
1305: * or equal priority, so if we find an element with higher
1306: * priority before we find an element with
1307: * matching name, we just ignore this endtag
1308: */
1309: if (htmlGetEndPriority(ctxt->nameTab[i]) > priority)
1310: return;
1311: }
1312: if (i < 0)
1313: return;
1314:
1315: while (!xmlStrEqual(newtag, ctxt->name)) {
1316: info = htmlTagLookup(ctxt->name);
1317: if ((info != NULL) && (info->endTag == 3)) {
1318: htmlParseErr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
1319: "Opening and ending tag mismatch: %s and %s\n",
1320: newtag, ctxt->name);
1321: }
1322: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
1323: ctxt->sax->endElement(ctxt->userData, ctxt->name);
1324: htmlnamePop(ctxt);
1325: }
1326: }
1327:
1328: /**
1329: * htmlAutoCloseOnEnd:
1330: * @ctxt: an HTML parser context
1331: *
1332: * Close all remaining tags at the end of the stream
1333: */
1334: static void
1335: htmlAutoCloseOnEnd(htmlParserCtxtPtr ctxt)
1336: {
1337: int i;
1338:
1339: if (ctxt->nameNr == 0)
1340: return;
1341: for (i = (ctxt->nameNr - 1); i >= 0; i--) {
1342: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
1343: ctxt->sax->endElement(ctxt->userData, ctxt->name);
1344: htmlnamePop(ctxt);
1345: }
1346: }
1347:
1348: /**
1349: * htmlAutoClose:
1350: * @ctxt: an HTML parser context
1351: * @newtag: The new tag name or NULL
1352: *
1353: * The HTML DTD allows a tag to implicitly close other tags.
1354: * The list is kept in htmlStartClose array. This function is
1355: * called when a new tag has been detected and generates the
1356: * appropriates closes if possible/needed.
1357: * If newtag is NULL this mean we are at the end of the resource
1358: * and we should check
1359: */
1360: static void
1361: htmlAutoClose(htmlParserCtxtPtr ctxt, const xmlChar * newtag)
1362: {
1363: while ((newtag != NULL) && (ctxt->name != NULL) &&
1364: (htmlCheckAutoClose(newtag, ctxt->name))) {
1365: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
1366: ctxt->sax->endElement(ctxt->userData, ctxt->name);
1367: htmlnamePop(ctxt);
1368: }
1369: if (newtag == NULL) {
1370: htmlAutoCloseOnEnd(ctxt);
1371: return;
1372: }
1373: while ((newtag == NULL) && (ctxt->name != NULL) &&
1374: ((xmlStrEqual(ctxt->name, BAD_CAST "head")) ||
1375: (xmlStrEqual(ctxt->name, BAD_CAST "body")) ||
1376: (xmlStrEqual(ctxt->name, BAD_CAST "html")))) {
1377: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
1378: ctxt->sax->endElement(ctxt->userData, ctxt->name);
1379: htmlnamePop(ctxt);
1380: }
1381: }
1382:
1383: /**
1384: * htmlAutoCloseTag:
1385: * @doc: the HTML document
1386: * @name: The tag name
1387: * @elem: the HTML element
1388: *
1389: * The HTML DTD allows a tag to implicitly close other tags.
1390: * The list is kept in htmlStartClose array. This function checks
1391: * if the element or one of it's children would autoclose the
1392: * given tag.
1393: *
1394: * Returns 1 if autoclose, 0 otherwise
1395: */
1396: int
1397: htmlAutoCloseTag(htmlDocPtr doc, const xmlChar *name, htmlNodePtr elem) {
1398: htmlNodePtr child;
1399:
1400: if (elem == NULL) return(1);
1401: if (xmlStrEqual(name, elem->name)) return(0);
1402: if (htmlCheckAutoClose(elem->name, name)) return(1);
1403: child = elem->children;
1404: while (child != NULL) {
1405: if (htmlAutoCloseTag(doc, name, child)) return(1);
1406: child = child->next;
1407: }
1408: return(0);
1409: }
1410:
1411: /**
1412: * htmlIsAutoClosed:
1413: * @doc: the HTML document
1414: * @elem: the HTML element
1415: *
1416: * The HTML DTD allows a tag to implicitly close other tags.
1417: * The list is kept in htmlStartClose array. This function checks
1418: * if a tag is autoclosed by one of it's child
1419: *
1420: * Returns 1 if autoclosed, 0 otherwise
1421: */
1422: int
1423: htmlIsAutoClosed(htmlDocPtr doc, htmlNodePtr elem) {
1424: htmlNodePtr child;
1425:
1426: if (elem == NULL) return(1);
1427: child = elem->children;
1428: while (child != NULL) {
1429: if (htmlAutoCloseTag(doc, elem->name, child)) return(1);
1430: child = child->next;
1431: }
1432: return(0);
1433: }
1434:
1435: /**
1436: * htmlCheckImplied:
1437: * @ctxt: an HTML parser context
1438: * @newtag: The new tag name
1439: *
1440: * The HTML DTD allows a tag to exists only implicitly
1441: * called when a new tag has been detected and generates the
1442: * appropriates implicit tags if missing
1443: */
1444: static void
1445: htmlCheckImplied(htmlParserCtxtPtr ctxt, const xmlChar *newtag) {
1446: int i;
1447:
1448: if (ctxt->options & HTML_PARSE_NOIMPLIED)
1449: return;
1450: if (!htmlOmittedDefaultValue)
1451: return;
1452: if (xmlStrEqual(newtag, BAD_CAST"html"))
1453: return;
1454: if (ctxt->nameNr <= 0) {
1455: htmlnamePush(ctxt, BAD_CAST"html");
1456: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
1457: ctxt->sax->startElement(ctxt->userData, BAD_CAST"html", NULL);
1458: }
1459: if ((xmlStrEqual(newtag, BAD_CAST"body")) || (xmlStrEqual(newtag, BAD_CAST"head")))
1460: return;
1461: if ((ctxt->nameNr <= 1) &&
1462: ((xmlStrEqual(newtag, BAD_CAST"script")) ||
1463: (xmlStrEqual(newtag, BAD_CAST"style")) ||
1464: (xmlStrEqual(newtag, BAD_CAST"meta")) ||
1465: (xmlStrEqual(newtag, BAD_CAST"link")) ||
1466: (xmlStrEqual(newtag, BAD_CAST"title")) ||
1467: (xmlStrEqual(newtag, BAD_CAST"base")))) {
1468: if (ctxt->html >= 3) {
1469: /* we already saw or generated an <head> before */
1470: return;
1471: }
1472: /*
1473: * dropped OBJECT ... i you put it first BODY will be
1474: * assumed !
1475: */
1476: htmlnamePush(ctxt, BAD_CAST"head");
1477: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
1478: ctxt->sax->startElement(ctxt->userData, BAD_CAST"head", NULL);
1479: } else if ((!xmlStrEqual(newtag, BAD_CAST"noframes")) &&
1480: (!xmlStrEqual(newtag, BAD_CAST"frame")) &&
1481: (!xmlStrEqual(newtag, BAD_CAST"frameset"))) {
1482: if (ctxt->html >= 10) {
1483: /* we already saw or generated a <body> before */
1484: return;
1485: }
1486: for (i = 0;i < ctxt->nameNr;i++) {
1487: if (xmlStrEqual(ctxt->nameTab[i], BAD_CAST"body")) {
1488: return;
1489: }
1490: if (xmlStrEqual(ctxt->nameTab[i], BAD_CAST"head")) {
1491: return;
1492: }
1493: }
1494:
1495: htmlnamePush(ctxt, BAD_CAST"body");
1496: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
1497: ctxt->sax->startElement(ctxt->userData, BAD_CAST"body", NULL);
1498: }
1499: }
1500:
1501: /**
1502: * htmlCheckParagraph
1503: * @ctxt: an HTML parser context
1504: *
1505: * Check whether a p element need to be implied before inserting
1506: * characters in the current element.
1507: *
1508: * Returns 1 if a paragraph has been inserted, 0 if not and -1
1509: * in case of error.
1510: */
1511:
1512: static int
1513: htmlCheckParagraph(htmlParserCtxtPtr ctxt) {
1514: const xmlChar *tag;
1515: int i;
1516:
1517: if (ctxt == NULL)
1518: return(-1);
1519: tag = ctxt->name;
1520: if (tag == NULL) {
1521: htmlAutoClose(ctxt, BAD_CAST"p");
1522: htmlCheckImplied(ctxt, BAD_CAST"p");
1523: htmlnamePush(ctxt, BAD_CAST"p");
1524: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
1525: ctxt->sax->startElement(ctxt->userData, BAD_CAST"p", NULL);
1526: return(1);
1527: }
1528: if (!htmlOmittedDefaultValue)
1529: return(0);
1530: for (i = 0; htmlNoContentElements[i] != NULL; i++) {
1531: if (xmlStrEqual(tag, BAD_CAST htmlNoContentElements[i])) {
1532: htmlAutoClose(ctxt, BAD_CAST"p");
1533: htmlCheckImplied(ctxt, BAD_CAST"p");
1534: htmlnamePush(ctxt, BAD_CAST"p");
1535: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
1536: ctxt->sax->startElement(ctxt->userData, BAD_CAST"p", NULL);
1537: return(1);
1538: }
1539: }
1540: return(0);
1541: }
1542:
1543: /**
1544: * htmlIsScriptAttribute:
1545: * @name: an attribute name
1546: *
1547: * Check if an attribute is of content type Script
1548: *
1549: * Returns 1 is the attribute is a script 0 otherwise
1550: */
1551: int
1552: htmlIsScriptAttribute(const xmlChar *name) {
1553: unsigned int i;
1554:
1555: if (name == NULL)
1556: return(0);
1557: /*
1558: * all script attributes start with 'on'
1559: */
1560: if ((name[0] != 'o') || (name[1] != 'n'))
1561: return(0);
1562: for (i = 0;
1563: i < sizeof(htmlScriptAttributes)/sizeof(htmlScriptAttributes[0]);
1564: i++) {
1565: if (xmlStrEqual(name, (const xmlChar *) htmlScriptAttributes[i]))
1566: return(1);
1567: }
1568: return(0);
1569: }
1570:
1571: /************************************************************************
1572: * *
1573: * The list of HTML predefined entities *
1574: * *
1575: ************************************************************************/
1576:
1577:
1578: static const htmlEntityDesc html40EntitiesTable[] = {
1579: /*
1580: * the 4 absolute ones, plus apostrophe.
1581: */
1582: { 34, "quot", "quotation mark = APL quote, U+0022 ISOnum" },
1583: { 38, "amp", "ampersand, U+0026 ISOnum" },
1584: { 39, "apos", "single quote" },
1585: { 60, "lt", "less-than sign, U+003C ISOnum" },
1586: { 62, "gt", "greater-than sign, U+003E ISOnum" },
1587:
1588: /*
1589: * A bunch still in the 128-255 range
1590: * Replacing them depend really on the charset used.
1591: */
1592: { 160, "nbsp", "no-break space = non-breaking space, U+00A0 ISOnum" },
1593: { 161, "iexcl","inverted exclamation mark, U+00A1 ISOnum" },
1594: { 162, "cent", "cent sign, U+00A2 ISOnum" },
1595: { 163, "pound","pound sign, U+00A3 ISOnum" },
1596: { 164, "curren","currency sign, U+00A4 ISOnum" },
1597: { 165, "yen", "yen sign = yuan sign, U+00A5 ISOnum" },
1598: { 166, "brvbar","broken bar = broken vertical bar, U+00A6 ISOnum" },
1599: { 167, "sect", "section sign, U+00A7 ISOnum" },
1600: { 168, "uml", "diaeresis = spacing diaeresis, U+00A8 ISOdia" },
1601: { 169, "copy", "copyright sign, U+00A9 ISOnum" },
1602: { 170, "ordf", "feminine ordinal indicator, U+00AA ISOnum" },
1603: { 171, "laquo","left-pointing double angle quotation mark = left pointing guillemet, U+00AB ISOnum" },
1604: { 172, "not", "not sign, U+00AC ISOnum" },
1605: { 173, "shy", "soft hyphen = discretionary hyphen, U+00AD ISOnum" },
1606: { 174, "reg", "registered sign = registered trade mark sign, U+00AE ISOnum" },
1607: { 175, "macr", "macron = spacing macron = overline = APL overbar, U+00AF ISOdia" },
1608: { 176, "deg", "degree sign, U+00B0 ISOnum" },
1609: { 177, "plusmn","plus-minus sign = plus-or-minus sign, U+00B1 ISOnum" },
1610: { 178, "sup2", "superscript two = superscript digit two = squared, U+00B2 ISOnum" },
1611: { 179, "sup3", "superscript three = superscript digit three = cubed, U+00B3 ISOnum" },
1612: { 180, "acute","acute accent = spacing acute, U+00B4 ISOdia" },
1613: { 181, "micro","micro sign, U+00B5 ISOnum" },
1614: { 182, "para", "pilcrow sign = paragraph sign, U+00B6 ISOnum" },
1615: { 183, "middot","middle dot = Georgian comma Greek middle dot, U+00B7 ISOnum" },
1616: { 184, "cedil","cedilla = spacing cedilla, U+00B8 ISOdia" },
1617: { 185, "sup1", "superscript one = superscript digit one, U+00B9 ISOnum" },
1618: { 186, "ordm", "masculine ordinal indicator, U+00BA ISOnum" },
1619: { 187, "raquo","right-pointing double angle quotation mark right pointing guillemet, U+00BB ISOnum" },
1620: { 188, "frac14","vulgar fraction one quarter = fraction one quarter, U+00BC ISOnum" },
1621: { 189, "frac12","vulgar fraction one half = fraction one half, U+00BD ISOnum" },
1622: { 190, "frac34","vulgar fraction three quarters = fraction three quarters, U+00BE ISOnum" },
1623: { 191, "iquest","inverted question mark = turned question mark, U+00BF ISOnum" },
1624: { 192, "Agrave","latin capital letter A with grave = latin capital letter A grave, U+00C0 ISOlat1" },
1625: { 193, "Aacute","latin capital letter A with acute, U+00C1 ISOlat1" },
1626: { 194, "Acirc","latin capital letter A with circumflex, U+00C2 ISOlat1" },
1627: { 195, "Atilde","latin capital letter A with tilde, U+00C3 ISOlat1" },
1628: { 196, "Auml", "latin capital letter A with diaeresis, U+00C4 ISOlat1" },
1629: { 197, "Aring","latin capital letter A with ring above = latin capital letter A ring, U+00C5 ISOlat1" },
1630: { 198, "AElig","latin capital letter AE = latin capital ligature AE, U+00C6 ISOlat1" },
1631: { 199, "Ccedil","latin capital letter C with cedilla, U+00C7 ISOlat1" },
1632: { 200, "Egrave","latin capital letter E with grave, U+00C8 ISOlat1" },
1633: { 201, "Eacute","latin capital letter E with acute, U+00C9 ISOlat1" },
1634: { 202, "Ecirc","latin capital letter E with circumflex, U+00CA ISOlat1" },
1635: { 203, "Euml", "latin capital letter E with diaeresis, U+00CB ISOlat1" },
1636: { 204, "Igrave","latin capital letter I with grave, U+00CC ISOlat1" },
1637: { 205, "Iacute","latin capital letter I with acute, U+00CD ISOlat1" },
1638: { 206, "Icirc","latin capital letter I with circumflex, U+00CE ISOlat1" },
1639: { 207, "Iuml", "latin capital letter I with diaeresis, U+00CF ISOlat1" },
1640: { 208, "ETH", "latin capital letter ETH, U+00D0 ISOlat1" },
1641: { 209, "Ntilde","latin capital letter N with tilde, U+00D1 ISOlat1" },
1642: { 210, "Ograve","latin capital letter O with grave, U+00D2 ISOlat1" },
1643: { 211, "Oacute","latin capital letter O with acute, U+00D3 ISOlat1" },
1644: { 212, "Ocirc","latin capital letter O with circumflex, U+00D4 ISOlat1" },
1645: { 213, "Otilde","latin capital letter O with tilde, U+00D5 ISOlat1" },
1646: { 214, "Ouml", "latin capital letter O with diaeresis, U+00D6 ISOlat1" },
1647: { 215, "times","multiplication sign, U+00D7 ISOnum" },
1648: { 216, "Oslash","latin capital letter O with stroke latin capital letter O slash, U+00D8 ISOlat1" },
1649: { 217, "Ugrave","latin capital letter U with grave, U+00D9 ISOlat1" },
1650: { 218, "Uacute","latin capital letter U with acute, U+00DA ISOlat1" },
1651: { 219, "Ucirc","latin capital letter U with circumflex, U+00DB ISOlat1" },
1652: { 220, "Uuml", "latin capital letter U with diaeresis, U+00DC ISOlat1" },
1653: { 221, "Yacute","latin capital letter Y with acute, U+00DD ISOlat1" },
1654: { 222, "THORN","latin capital letter THORN, U+00DE ISOlat1" },
1655: { 223, "szlig","latin small letter sharp s = ess-zed, U+00DF ISOlat1" },
1656: { 224, "agrave","latin small letter a with grave = latin small letter a grave, U+00E0 ISOlat1" },
1657: { 225, "aacute","latin small letter a with acute, U+00E1 ISOlat1" },
1658: { 226, "acirc","latin small letter a with circumflex, U+00E2 ISOlat1" },
1659: { 227, "atilde","latin small letter a with tilde, U+00E3 ISOlat1" },
1660: { 228, "auml", "latin small letter a with diaeresis, U+00E4 ISOlat1" },
1661: { 229, "aring","latin small letter a with ring above = latin small letter a ring, U+00E5 ISOlat1" },
1662: { 230, "aelig","latin small letter ae = latin small ligature ae, U+00E6 ISOlat1" },
1663: { 231, "ccedil","latin small letter c with cedilla, U+00E7 ISOlat1" },
1664: { 232, "egrave","latin small letter e with grave, U+00E8 ISOlat1" },
1665: { 233, "eacute","latin small letter e with acute, U+00E9 ISOlat1" },
1666: { 234, "ecirc","latin small letter e with circumflex, U+00EA ISOlat1" },
1667: { 235, "euml", "latin small letter e with diaeresis, U+00EB ISOlat1" },
1668: { 236, "igrave","latin small letter i with grave, U+00EC ISOlat1" },
1669: { 237, "iacute","latin small letter i with acute, U+00ED ISOlat1" },
1670: { 238, "icirc","latin small letter i with circumflex, U+00EE ISOlat1" },
1671: { 239, "iuml", "latin small letter i with diaeresis, U+00EF ISOlat1" },
1672: { 240, "eth", "latin small letter eth, U+00F0 ISOlat1" },
1673: { 241, "ntilde","latin small letter n with tilde, U+00F1 ISOlat1" },
1674: { 242, "ograve","latin small letter o with grave, U+00F2 ISOlat1" },
1675: { 243, "oacute","latin small letter o with acute, U+00F3 ISOlat1" },
1676: { 244, "ocirc","latin small letter o with circumflex, U+00F4 ISOlat1" },
1677: { 245, "otilde","latin small letter o with tilde, U+00F5 ISOlat1" },
1678: { 246, "ouml", "latin small letter o with diaeresis, U+00F6 ISOlat1" },
1679: { 247, "divide","division sign, U+00F7 ISOnum" },
1680: { 248, "oslash","latin small letter o with stroke, = latin small letter o slash, U+00F8 ISOlat1" },
1681: { 249, "ugrave","latin small letter u with grave, U+00F9 ISOlat1" },
1682: { 250, "uacute","latin small letter u with acute, U+00FA ISOlat1" },
1683: { 251, "ucirc","latin small letter u with circumflex, U+00FB ISOlat1" },
1684: { 252, "uuml", "latin small letter u with diaeresis, U+00FC ISOlat1" },
1685: { 253, "yacute","latin small letter y with acute, U+00FD ISOlat1" },
1686: { 254, "thorn","latin small letter thorn with, U+00FE ISOlat1" },
1687: { 255, "yuml", "latin small letter y with diaeresis, U+00FF ISOlat1" },
1688:
1689: { 338, "OElig","latin capital ligature OE, U+0152 ISOlat2" },
1690: { 339, "oelig","latin small ligature oe, U+0153 ISOlat2" },
1691: { 352, "Scaron","latin capital letter S with caron, U+0160 ISOlat2" },
1692: { 353, "scaron","latin small letter s with caron, U+0161 ISOlat2" },
1693: { 376, "Yuml", "latin capital letter Y with diaeresis, U+0178 ISOlat2" },
1694:
1695: /*
1696: * Anything below should really be kept as entities references
1697: */
1698: { 402, "fnof", "latin small f with hook = function = florin, U+0192 ISOtech" },
1699:
1700: { 710, "circ", "modifier letter circumflex accent, U+02C6 ISOpub" },
1701: { 732, "tilde","small tilde, U+02DC ISOdia" },
1702:
1703: { 913, "Alpha","greek capital letter alpha, U+0391" },
1704: { 914, "Beta", "greek capital letter beta, U+0392" },
1705: { 915, "Gamma","greek capital letter gamma, U+0393 ISOgrk3" },
1706: { 916, "Delta","greek capital letter delta, U+0394 ISOgrk3" },
1707: { 917, "Epsilon","greek capital letter epsilon, U+0395" },
1708: { 918, "Zeta", "greek capital letter zeta, U+0396" },
1709: { 919, "Eta", "greek capital letter eta, U+0397" },
1710: { 920, "Theta","greek capital letter theta, U+0398 ISOgrk3" },
1711: { 921, "Iota", "greek capital letter iota, U+0399" },
1712: { 922, "Kappa","greek capital letter kappa, U+039A" },
1713: { 923, "Lambda", "greek capital letter lambda, U+039B ISOgrk3" },
1714: { 924, "Mu", "greek capital letter mu, U+039C" },
1715: { 925, "Nu", "greek capital letter nu, U+039D" },
1716: { 926, "Xi", "greek capital letter xi, U+039E ISOgrk3" },
1717: { 927, "Omicron","greek capital letter omicron, U+039F" },
1718: { 928, "Pi", "greek capital letter pi, U+03A0 ISOgrk3" },
1719: { 929, "Rho", "greek capital letter rho, U+03A1" },
1720: { 931, "Sigma","greek capital letter sigma, U+03A3 ISOgrk3" },
1721: { 932, "Tau", "greek capital letter tau, U+03A4" },
1722: { 933, "Upsilon","greek capital letter upsilon, U+03A5 ISOgrk3" },
1723: { 934, "Phi", "greek capital letter phi, U+03A6 ISOgrk3" },
1724: { 935, "Chi", "greek capital letter chi, U+03A7" },
1725: { 936, "Psi", "greek capital letter psi, U+03A8 ISOgrk3" },
1726: { 937, "Omega","greek capital letter omega, U+03A9 ISOgrk3" },
1727:
1728: { 945, "alpha","greek small letter alpha, U+03B1 ISOgrk3" },
1729: { 946, "beta", "greek small letter beta, U+03B2 ISOgrk3" },
1730: { 947, "gamma","greek small letter gamma, U+03B3 ISOgrk3" },
1731: { 948, "delta","greek small letter delta, U+03B4 ISOgrk3" },
1732: { 949, "epsilon","greek small letter epsilon, U+03B5 ISOgrk3" },
1733: { 950, "zeta", "greek small letter zeta, U+03B6 ISOgrk3" },
1734: { 951, "eta", "greek small letter eta, U+03B7 ISOgrk3" },
1735: { 952, "theta","greek small letter theta, U+03B8 ISOgrk3" },
1736: { 953, "iota", "greek small letter iota, U+03B9 ISOgrk3" },
1737: { 954, "kappa","greek small letter kappa, U+03BA ISOgrk3" },
1738: { 955, "lambda","greek small letter lambda, U+03BB ISOgrk3" },
1739: { 956, "mu", "greek small letter mu, U+03BC ISOgrk3" },
1740: { 957, "nu", "greek small letter nu, U+03BD ISOgrk3" },
1741: { 958, "xi", "greek small letter xi, U+03BE ISOgrk3" },
1742: { 959, "omicron","greek small letter omicron, U+03BF NEW" },
1743: { 960, "pi", "greek small letter pi, U+03C0 ISOgrk3" },
1744: { 961, "rho", "greek small letter rho, U+03C1 ISOgrk3" },
1745: { 962, "sigmaf","greek small letter final sigma, U+03C2 ISOgrk3" },
1746: { 963, "sigma","greek small letter sigma, U+03C3 ISOgrk3" },
1747: { 964, "tau", "greek small letter tau, U+03C4 ISOgrk3" },
1748: { 965, "upsilon","greek small letter upsilon, U+03C5 ISOgrk3" },
1749: { 966, "phi", "greek small letter phi, U+03C6 ISOgrk3" },
1750: { 967, "chi", "greek small letter chi, U+03C7 ISOgrk3" },
1751: { 968, "psi", "greek small letter psi, U+03C8 ISOgrk3" },
1752: { 969, "omega","greek small letter omega, U+03C9 ISOgrk3" },
1753: { 977, "thetasym","greek small letter theta symbol, U+03D1 NEW" },
1754: { 978, "upsih","greek upsilon with hook symbol, U+03D2 NEW" },
1755: { 982, "piv", "greek pi symbol, U+03D6 ISOgrk3" },
1756:
1757: { 8194, "ensp", "en space, U+2002 ISOpub" },
1758: { 8195, "emsp", "em space, U+2003 ISOpub" },
1759: { 8201, "thinsp","thin space, U+2009 ISOpub" },
1760: { 8204, "zwnj", "zero width non-joiner, U+200C NEW RFC 2070" },
1761: { 8205, "zwj", "zero width joiner, U+200D NEW RFC 2070" },
1762: { 8206, "lrm", "left-to-right mark, U+200E NEW RFC 2070" },
1763: { 8207, "rlm", "right-to-left mark, U+200F NEW RFC 2070" },
1764: { 8211, "ndash","en dash, U+2013 ISOpub" },
1765: { 8212, "mdash","em dash, U+2014 ISOpub" },
1766: { 8216, "lsquo","left single quotation mark, U+2018 ISOnum" },
1767: { 8217, "rsquo","right single quotation mark, U+2019 ISOnum" },
1768: { 8218, "sbquo","single low-9 quotation mark, U+201A NEW" },
1769: { 8220, "ldquo","left double quotation mark, U+201C ISOnum" },
1770: { 8221, "rdquo","right double quotation mark, U+201D ISOnum" },
1771: { 8222, "bdquo","double low-9 quotation mark, U+201E NEW" },
1772: { 8224, "dagger","dagger, U+2020 ISOpub" },
1773: { 8225, "Dagger","double dagger, U+2021 ISOpub" },
1774:
1775: { 8226, "bull", "bullet = black small circle, U+2022 ISOpub" },
1776: { 8230, "hellip","horizontal ellipsis = three dot leader, U+2026 ISOpub" },
1777:
1778: { 8240, "permil","per mille sign, U+2030 ISOtech" },
1779:
1780: { 8242, "prime","prime = minutes = feet, U+2032 ISOtech" },
1781: { 8243, "Prime","double prime = seconds = inches, U+2033 ISOtech" },
1782:
1783: { 8249, "lsaquo","single left-pointing angle quotation mark, U+2039 ISO proposed" },
1784: { 8250, "rsaquo","single right-pointing angle quotation mark, U+203A ISO proposed" },
1785:
1786: { 8254, "oline","overline = spacing overscore, U+203E NEW" },
1787: { 8260, "frasl","fraction slash, U+2044 NEW" },
1788:
1789: { 8364, "euro", "euro sign, U+20AC NEW" },
1790:
1791: { 8465, "image","blackletter capital I = imaginary part, U+2111 ISOamso" },
1792: { 8472, "weierp","script capital P = power set = Weierstrass p, U+2118 ISOamso" },
1793: { 8476, "real", "blackletter capital R = real part symbol, U+211C ISOamso" },
1794: { 8482, "trade","trade mark sign, U+2122 ISOnum" },
1795: { 8501, "alefsym","alef symbol = first transfinite cardinal, U+2135 NEW" },
1796: { 8592, "larr", "leftwards arrow, U+2190 ISOnum" },
1797: { 8593, "uarr", "upwards arrow, U+2191 ISOnum" },
1798: { 8594, "rarr", "rightwards arrow, U+2192 ISOnum" },
1799: { 8595, "darr", "downwards arrow, U+2193 ISOnum" },
1800: { 8596, "harr", "left right arrow, U+2194 ISOamsa" },
1801: { 8629, "crarr","downwards arrow with corner leftwards = carriage return, U+21B5 NEW" },
1802: { 8656, "lArr", "leftwards double arrow, U+21D0 ISOtech" },
1803: { 8657, "uArr", "upwards double arrow, U+21D1 ISOamsa" },
1804: { 8658, "rArr", "rightwards double arrow, U+21D2 ISOtech" },
1805: { 8659, "dArr", "downwards double arrow, U+21D3 ISOamsa" },
1806: { 8660, "hArr", "left right double arrow, U+21D4 ISOamsa" },
1807:
1808: { 8704, "forall","for all, U+2200 ISOtech" },
1809: { 8706, "part", "partial differential, U+2202 ISOtech" },
1810: { 8707, "exist","there exists, U+2203 ISOtech" },
1811: { 8709, "empty","empty set = null set = diameter, U+2205 ISOamso" },
1812: { 8711, "nabla","nabla = backward difference, U+2207 ISOtech" },
1813: { 8712, "isin", "element of, U+2208 ISOtech" },
1814: { 8713, "notin","not an element of, U+2209 ISOtech" },
1815: { 8715, "ni", "contains as member, U+220B ISOtech" },
1816: { 8719, "prod", "n-ary product = product sign, U+220F ISOamsb" },
1817: { 8721, "sum", "n-ary summation, U+2211 ISOamsb" },
1818: { 8722, "minus","minus sign, U+2212 ISOtech" },
1819: { 8727, "lowast","asterisk operator, U+2217 ISOtech" },
1820: { 8730, "radic","square root = radical sign, U+221A ISOtech" },
1821: { 8733, "prop", "proportional to, U+221D ISOtech" },
1822: { 8734, "infin","infinity, U+221E ISOtech" },
1823: { 8736, "ang", "angle, U+2220 ISOamso" },
1824: { 8743, "and", "logical and = wedge, U+2227 ISOtech" },
1825: { 8744, "or", "logical or = vee, U+2228 ISOtech" },
1826: { 8745, "cap", "intersection = cap, U+2229 ISOtech" },
1827: { 8746, "cup", "union = cup, U+222A ISOtech" },
1828: { 8747, "int", "integral, U+222B ISOtech" },
1829: { 8756, "there4","therefore, U+2234 ISOtech" },
1830: { 8764, "sim", "tilde operator = varies with = similar to, U+223C ISOtech" },
1831: { 8773, "cong", "approximately equal to, U+2245 ISOtech" },
1832: { 8776, "asymp","almost equal to = asymptotic to, U+2248 ISOamsr" },
1833: { 8800, "ne", "not equal to, U+2260 ISOtech" },
1834: { 8801, "equiv","identical to, U+2261 ISOtech" },
1835: { 8804, "le", "less-than or equal to, U+2264 ISOtech" },
1836: { 8805, "ge", "greater-than or equal to, U+2265 ISOtech" },
1837: { 8834, "sub", "subset of, U+2282 ISOtech" },
1838: { 8835, "sup", "superset of, U+2283 ISOtech" },
1839: { 8836, "nsub", "not a subset of, U+2284 ISOamsn" },
1840: { 8838, "sube", "subset of or equal to, U+2286 ISOtech" },
1841: { 8839, "supe", "superset of or equal to, U+2287 ISOtech" },
1842: { 8853, "oplus","circled plus = direct sum, U+2295 ISOamsb" },
1843: { 8855, "otimes","circled times = vector product, U+2297 ISOamsb" },
1844: { 8869, "perp", "up tack = orthogonal to = perpendicular, U+22A5 ISOtech" },
1845: { 8901, "sdot", "dot operator, U+22C5 ISOamsb" },
1846: { 8968, "lceil","left ceiling = apl upstile, U+2308 ISOamsc" },
1847: { 8969, "rceil","right ceiling, U+2309 ISOamsc" },
1848: { 8970, "lfloor","left floor = apl downstile, U+230A ISOamsc" },
1849: { 8971, "rfloor","right floor, U+230B ISOamsc" },
1850: { 9001, "lang", "left-pointing angle bracket = bra, U+2329 ISOtech" },
1851: { 9002, "rang", "right-pointing angle bracket = ket, U+232A ISOtech" },
1852: { 9674, "loz", "lozenge, U+25CA ISOpub" },
1853:
1854: { 9824, "spades","black spade suit, U+2660 ISOpub" },
1855: { 9827, "clubs","black club suit = shamrock, U+2663 ISOpub" },
1856: { 9829, "hearts","black heart suit = valentine, U+2665 ISOpub" },
1857: { 9830, "diams","black diamond suit, U+2666 ISOpub" },
1858:
1859: };
1860:
1861: /************************************************************************
1862: * *
1863: * Commodity functions to handle entities *
1864: * *
1865: ************************************************************************/
1866:
1867: /*
1868: * Macro used to grow the current buffer.
1869: */
1870: #define growBuffer(buffer) { \
1871: xmlChar *tmp; \
1872: buffer##_size *= 2; \
1873: tmp = (xmlChar *) xmlRealloc(buffer, buffer##_size * sizeof(xmlChar)); \
1874: if (tmp == NULL) { \
1875: htmlErrMemory(ctxt, "growing buffer\n"); \
1876: xmlFree(buffer); \
1877: return(NULL); \
1878: } \
1879: buffer = tmp; \
1880: }
1881:
1882: /**
1883: * htmlEntityLookup:
1884: * @name: the entity name
1885: *
1886: * Lookup the given entity in EntitiesTable
1887: *
1888: * TODO: the linear scan is really ugly, an hash table is really needed.
1889: *
1890: * Returns the associated htmlEntityDescPtr if found, NULL otherwise.
1891: */
1892: const htmlEntityDesc *
1893: htmlEntityLookup(const xmlChar *name) {
1894: unsigned int i;
1895:
1896: for (i = 0;i < (sizeof(html40EntitiesTable)/
1897: sizeof(html40EntitiesTable[0]));i++) {
1898: if (xmlStrEqual(name, BAD_CAST html40EntitiesTable[i].name)) {
1899: return((htmlEntityDescPtr) &html40EntitiesTable[i]);
1900: }
1901: }
1902: return(NULL);
1903: }
1904:
1905: /**
1906: * htmlEntityValueLookup:
1907: * @value: the entity's unicode value
1908: *
1909: * Lookup the given entity in EntitiesTable
1910: *
1911: * TODO: the linear scan is really ugly, an hash table is really needed.
1912: *
1913: * Returns the associated htmlEntityDescPtr if found, NULL otherwise.
1914: */
1915: const htmlEntityDesc *
1916: htmlEntityValueLookup(unsigned int value) {
1917: unsigned int i;
1918:
1919: for (i = 0;i < (sizeof(html40EntitiesTable)/
1920: sizeof(html40EntitiesTable[0]));i++) {
1921: if (html40EntitiesTable[i].value >= value) {
1922: if (html40EntitiesTable[i].value > value)
1923: break;
1924: return((htmlEntityDescPtr) &html40EntitiesTable[i]);
1925: }
1926: }
1927: return(NULL);
1928: }
1929:
1930: /**
1931: * UTF8ToHtml:
1932: * @out: a pointer to an array of bytes to store the result
1933: * @outlen: the length of @out
1934: * @in: a pointer to an array of UTF-8 chars
1935: * @inlen: the length of @in
1936: *
1937: * Take a block of UTF-8 chars in and try to convert it to an ASCII
1938: * plus HTML entities block of chars out.
1939: *
1940: * Returns 0 if success, -2 if the transcoding fails, or -1 otherwise
1941: * The value of @inlen after return is the number of octets consumed
1942: * as the return value is positive, else unpredictable.
1943: * The value of @outlen after return is the number of octets consumed.
1944: */
1945: int
1946: UTF8ToHtml(unsigned char* out, int *outlen,
1947: const unsigned char* in, int *inlen) {
1948: const unsigned char* processed = in;
1949: const unsigned char* outend;
1950: const unsigned char* outstart = out;
1951: const unsigned char* instart = in;
1952: const unsigned char* inend;
1953: unsigned int c, d;
1954: int trailing;
1955:
1956: if ((out == NULL) || (outlen == NULL) || (inlen == NULL)) return(-1);
1957: if (in == NULL) {
1958: /*
1959: * initialization nothing to do
1960: */
1961: *outlen = 0;
1962: *inlen = 0;
1963: return(0);
1964: }
1965: inend = in + (*inlen);
1966: outend = out + (*outlen);
1967: while (in < inend) {
1968: d = *in++;
1969: if (d < 0x80) { c= d; trailing= 0; }
1970: else if (d < 0xC0) {
1971: /* trailing byte in leading position */
1972: *outlen = out - outstart;
1973: *inlen = processed - instart;
1974: return(-2);
1975: } else if (d < 0xE0) { c= d & 0x1F; trailing= 1; }
1976: else if (d < 0xF0) { c= d & 0x0F; trailing= 2; }
1977: else if (d < 0xF8) { c= d & 0x07; trailing= 3; }
1978: else {
1979: /* no chance for this in Ascii */
1980: *outlen = out - outstart;
1981: *inlen = processed - instart;
1982: return(-2);
1983: }
1984:
1985: if (inend - in < trailing) {
1986: break;
1987: }
1988:
1989: for ( ; trailing; trailing--) {
1990: if ((in >= inend) || (((d= *in++) & 0xC0) != 0x80))
1991: break;
1992: c <<= 6;
1993: c |= d & 0x3F;
1994: }
1995:
1996: /* assertion: c is a single UTF-4 value */
1997: if (c < 0x80) {
1998: if (out + 1 >= outend)
1999: break;
2000: *out++ = c;
2001: } else {
2002: int len;
2003: const htmlEntityDesc * ent;
2004: const char *cp;
2005: char nbuf[16];
2006:
2007: /*
2008: * Try to lookup a predefined HTML entity for it
2009: */
2010:
2011: ent = htmlEntityValueLookup(c);
2012: if (ent == NULL) {
2013: snprintf(nbuf, sizeof(nbuf), "#%u", c);
2014: cp = nbuf;
2015: }
2016: else
2017: cp = ent->name;
2018: len = strlen(cp);
2019: if (out + 2 + len >= outend)
2020: break;
2021: *out++ = '&';
2022: memcpy(out, cp, len);
2023: out += len;
2024: *out++ = ';';
2025: }
2026: processed = in;
2027: }
2028: *outlen = out - outstart;
2029: *inlen = processed - instart;
2030: return(0);
2031: }
2032:
2033: /**
2034: * htmlEncodeEntities:
2035: * @out: a pointer to an array of bytes to store the result
2036: * @outlen: the length of @out
2037: * @in: a pointer to an array of UTF-8 chars
2038: * @inlen: the length of @in
2039: * @quoteChar: the quote character to escape (' or ") or zero.
2040: *
2041: * Take a block of UTF-8 chars in and try to convert it to an ASCII
2042: * plus HTML entities block of chars out.
2043: *
2044: * Returns 0 if success, -2 if the transcoding fails, or -1 otherwise
2045: * The value of @inlen after return is the number of octets consumed
2046: * as the return value is positive, else unpredictable.
2047: * The value of @outlen after return is the number of octets consumed.
2048: */
2049: int
2050: htmlEncodeEntities(unsigned char* out, int *outlen,
2051: const unsigned char* in, int *inlen, int quoteChar) {
2052: const unsigned char* processed = in;
2053: const unsigned char* outend;
2054: const unsigned char* outstart = out;
2055: const unsigned char* instart = in;
2056: const unsigned char* inend;
2057: unsigned int c, d;
2058: int trailing;
2059:
2060: if ((out == NULL) || (outlen == NULL) || (inlen == NULL) || (in == NULL))
2061: return(-1);
2062: outend = out + (*outlen);
2063: inend = in + (*inlen);
2064: while (in < inend) {
2065: d = *in++;
2066: if (d < 0x80) { c= d; trailing= 0; }
2067: else if (d < 0xC0) {
2068: /* trailing byte in leading position */
2069: *outlen = out - outstart;
2070: *inlen = processed - instart;
2071: return(-2);
2072: } else if (d < 0xE0) { c= d & 0x1F; trailing= 1; }
2073: else if (d < 0xF0) { c= d & 0x0F; trailing= 2; }
2074: else if (d < 0xF8) { c= d & 0x07; trailing= 3; }
2075: else {
2076: /* no chance for this in Ascii */
2077: *outlen = out - outstart;
2078: *inlen = processed - instart;
2079: return(-2);
2080: }
2081:
2082: if (inend - in < trailing)
2083: break;
2084:
2085: while (trailing--) {
2086: if (((d= *in++) & 0xC0) != 0x80) {
2087: *outlen = out - outstart;
2088: *inlen = processed - instart;
2089: return(-2);
2090: }
2091: c <<= 6;
2092: c |= d & 0x3F;
2093: }
2094:
2095: /* assertion: c is a single UTF-4 value */
2096: if ((c < 0x80) && (c != (unsigned int) quoteChar) &&
2097: (c != '&') && (c != '<') && (c != '>')) {
2098: if (out >= outend)
2099: break;
2100: *out++ = c;
2101: } else {
2102: const htmlEntityDesc * ent;
2103: const char *cp;
2104: char nbuf[16];
2105: int len;
2106:
2107: /*
2108: * Try to lookup a predefined HTML entity for it
2109: */
2110: ent = htmlEntityValueLookup(c);
2111: if (ent == NULL) {
2112: snprintf(nbuf, sizeof(nbuf), "#%u", c);
2113: cp = nbuf;
2114: }
2115: else
2116: cp = ent->name;
2117: len = strlen(cp);
2118: if (out + 2 + len > outend)
2119: break;
2120: *out++ = '&';
2121: memcpy(out, cp, len);
2122: out += len;
2123: *out++ = ';';
2124: }
2125: processed = in;
2126: }
2127: *outlen = out - outstart;
2128: *inlen = processed - instart;
2129: return(0);
2130: }
2131:
2132: /************************************************************************
2133: * *
2134: * Commodity functions to handle streams *
2135: * *
2136: ************************************************************************/
2137:
2138: /**
2139: * htmlNewInputStream:
2140: * @ctxt: an HTML parser context
2141: *
2142: * Create a new input stream structure
2143: * Returns the new input stream or NULL
2144: */
2145: static htmlParserInputPtr
2146: htmlNewInputStream(htmlParserCtxtPtr ctxt) {
2147: htmlParserInputPtr input;
2148:
2149: input = (xmlParserInputPtr) xmlMalloc(sizeof(htmlParserInput));
2150: if (input == NULL) {
2151: htmlErrMemory(ctxt, "couldn't allocate a new input stream\n");
2152: return(NULL);
2153: }
2154: memset(input, 0, sizeof(htmlParserInput));
2155: input->filename = NULL;
2156: input->directory = NULL;
2157: input->base = NULL;
2158: input->cur = NULL;
2159: input->buf = NULL;
2160: input->line = 1;
2161: input->col = 1;
2162: input->buf = NULL;
2163: input->free = NULL;
2164: input->version = NULL;
2165: input->consumed = 0;
2166: input->length = 0;
2167: return(input);
2168: }
2169:
2170:
2171: /************************************************************************
2172: * *
2173: * Commodity functions, cleanup needed ? *
2174: * *
2175: ************************************************************************/
2176: /*
2177: * all tags allowing pc data from the html 4.01 loose dtd
2178: * NOTE: it might be more apropriate to integrate this information
2179: * into the html40ElementTable array but I don't want to risk any
2180: * binary incomptibility
2181: */
2182: static const char *allowPCData[] = {
2183: "a", "abbr", "acronym", "address", "applet", "b", "bdo", "big",
2184: "blockquote", "body", "button", "caption", "center", "cite", "code",
2185: "dd", "del", "dfn", "div", "dt", "em", "font", "form", "h1", "h2",
2186: "h3", "h4", "h5", "h6", "i", "iframe", "ins", "kbd", "label", "legend",
2187: "li", "noframes", "noscript", "object", "p", "pre", "q", "s", "samp",
2188: "small", "span", "strike", "strong", "td", "th", "tt", "u", "var"
2189: };
2190:
2191: /**
2192: * areBlanks:
2193: * @ctxt: an HTML parser context
2194: * @str: a xmlChar *
2195: * @len: the size of @str
2196: *
2197: * Is this a sequence of blank chars that one can ignore ?
2198: *
2199: * Returns 1 if ignorable 0 otherwise.
2200: */
2201:
2202: static int areBlanks(htmlParserCtxtPtr ctxt, const xmlChar *str, int len) {
2203: unsigned int i;
2204: int j;
2205: xmlNodePtr lastChild;
2206: xmlDtdPtr dtd;
2207:
2208: for (j = 0;j < len;j++)
2209: if (!(IS_BLANK_CH(str[j]))) return(0);
2210:
2211: if (CUR == 0) return(1);
2212: if (CUR != '<') return(0);
2213: if (ctxt->name == NULL)
2214: return(1);
2215: if (xmlStrEqual(ctxt->name, BAD_CAST"html"))
2216: return(1);
2217: if (xmlStrEqual(ctxt->name, BAD_CAST"head"))
2218: return(1);
2219:
2220: /* Only strip CDATA children of the body tag for strict HTML DTDs */
2221: if (xmlStrEqual(ctxt->name, BAD_CAST "body") && ctxt->myDoc != NULL) {
2222: dtd = xmlGetIntSubset(ctxt->myDoc);
2223: if (dtd != NULL && dtd->ExternalID != NULL) {
2224: if (!xmlStrcasecmp(dtd->ExternalID, BAD_CAST "-//W3C//DTD HTML 4.01//EN") ||
2225: !xmlStrcasecmp(dtd->ExternalID, BAD_CAST "-//W3C//DTD HTML 4//EN"))
2226: return(1);
2227: }
2228: }
2229:
2230: if (ctxt->node == NULL) return(0);
2231: lastChild = xmlGetLastChild(ctxt->node);
2232: while ((lastChild) && (lastChild->type == XML_COMMENT_NODE))
2233: lastChild = lastChild->prev;
2234: if (lastChild == NULL) {
2235: if ((ctxt->node->type != XML_ELEMENT_NODE) &&
2236: (ctxt->node->content != NULL)) return(0);
2237: /* keep ws in constructs like ...<b> </b>...
2238: for all tags "b" allowing PCDATA */
2239: for ( i = 0; i < sizeof(allowPCData)/sizeof(allowPCData[0]); i++ ) {
2240: if ( xmlStrEqual(ctxt->name, BAD_CAST allowPCData[i]) ) {
2241: return(0);
2242: }
2243: }
2244: } else if (xmlNodeIsText(lastChild)) {
2245: return(0);
2246: } else {
2247: /* keep ws in constructs like <p><b>xy</b> <i>z</i><p>
2248: for all tags "p" allowing PCDATA */
2249: for ( i = 0; i < sizeof(allowPCData)/sizeof(allowPCData[0]); i++ ) {
2250: if ( xmlStrEqual(lastChild->name, BAD_CAST allowPCData[i]) ) {
2251: return(0);
2252: }
2253: }
2254: }
2255: return(1);
2256: }
2257:
2258: /**
2259: * htmlNewDocNoDtD:
2260: * @URI: URI for the dtd, or NULL
2261: * @ExternalID: the external ID of the DTD, or NULL
2262: *
2263: * Creates a new HTML document without a DTD node if @URI and @ExternalID
2264: * are NULL
2265: *
2266: * Returns a new document, do not initialize the DTD if not provided
2267: */
2268: htmlDocPtr
2269: htmlNewDocNoDtD(const xmlChar *URI, const xmlChar *ExternalID) {
2270: xmlDocPtr cur;
2271:
2272: /*
2273: * Allocate a new document and fill the fields.
2274: */
2275: cur = (xmlDocPtr) xmlMalloc(sizeof(xmlDoc));
2276: if (cur == NULL) {
2277: htmlErrMemory(NULL, "HTML document creation failed\n");
2278: return(NULL);
2279: }
2280: memset(cur, 0, sizeof(xmlDoc));
2281:
2282: cur->type = XML_HTML_DOCUMENT_NODE;
2283: cur->version = NULL;
2284: cur->intSubset = NULL;
2285: cur->doc = cur;
2286: cur->name = NULL;
2287: cur->children = NULL;
2288: cur->extSubset = NULL;
2289: cur->oldNs = NULL;
2290: cur->encoding = NULL;
2291: cur->standalone = 1;
2292: cur->compression = 0;
2293: cur->ids = NULL;
2294: cur->refs = NULL;
2295: cur->_private = NULL;
2296: cur->charset = XML_CHAR_ENCODING_UTF8;
2297: cur->properties = XML_DOC_HTML | XML_DOC_USERBUILT;
2298: if ((ExternalID != NULL) ||
2299: (URI != NULL))
2300: xmlCreateIntSubset(cur, BAD_CAST "html", ExternalID, URI);
2301: return(cur);
2302: }
2303:
2304: /**
2305: * htmlNewDoc:
2306: * @URI: URI for the dtd, or NULL
2307: * @ExternalID: the external ID of the DTD, or NULL
2308: *
2309: * Creates a new HTML document
2310: *
2311: * Returns a new document
2312: */
2313: htmlDocPtr
2314: htmlNewDoc(const xmlChar *URI, const xmlChar *ExternalID) {
2315: if ((URI == NULL) && (ExternalID == NULL))
2316: return(htmlNewDocNoDtD(
2317: BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd",
2318: BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN"));
2319:
2320: return(htmlNewDocNoDtD(URI, ExternalID));
2321: }
2322:
2323:
2324: /************************************************************************
2325: * *
2326: * The parser itself *
2327: * Relates to http://www.w3.org/TR/html40 *
2328: * *
2329: ************************************************************************/
2330:
2331: /************************************************************************
2332: * *
2333: * The parser itself *
2334: * *
2335: ************************************************************************/
2336:
2337: static const xmlChar * htmlParseNameComplex(xmlParserCtxtPtr ctxt);
2338:
2339: /**
2340: * htmlParseHTMLName:
2341: * @ctxt: an HTML parser context
2342: *
2343: * parse an HTML tag or attribute name, note that we convert it to lowercase
2344: * since HTML names are not case-sensitive.
2345: *
2346: * Returns the Tag Name parsed or NULL
2347: */
2348:
2349: static const xmlChar *
2350: htmlParseHTMLName(htmlParserCtxtPtr ctxt) {
2351: int i = 0;
2352: xmlChar loc[HTML_PARSER_BUFFER_SIZE];
2353:
2354: if (!IS_ASCII_LETTER(CUR) && (CUR != '_') &&
2355: (CUR != ':') && (CUR != '.')) return(NULL);
2356:
2357: while ((i < HTML_PARSER_BUFFER_SIZE) &&
2358: ((IS_ASCII_LETTER(CUR)) || (IS_ASCII_DIGIT(CUR)) ||
2359: (CUR == ':') || (CUR == '-') || (CUR == '_') ||
2360: (CUR == '.'))) {
2361: if ((CUR >= 'A') && (CUR <= 'Z')) loc[i] = CUR + 0x20;
2362: else loc[i] = CUR;
2363: i++;
2364:
2365: NEXT;
2366: }
2367:
2368: return(xmlDictLookup(ctxt->dict, loc, i));
2369: }
2370:
2371:
2372: /**
2373: * htmlParseHTMLName_nonInvasive:
2374: * @ctxt: an HTML parser context
2375: *
2376: * parse an HTML tag or attribute name, note that we convert it to lowercase
2377: * since HTML names are not case-sensitive, this doesn't consume the data
2378: * from the stream, it's a look-ahead
2379: *
2380: * Returns the Tag Name parsed or NULL
2381: */
2382:
2383: static const xmlChar *
2384: htmlParseHTMLName_nonInvasive(htmlParserCtxtPtr ctxt) {
2385: int i = 0;
2386: xmlChar loc[HTML_PARSER_BUFFER_SIZE];
2387:
2388: if (!IS_ASCII_LETTER(NXT(1)) && (NXT(1) != '_') &&
2389: (NXT(1) != ':')) return(NULL);
2390:
2391: while ((i < HTML_PARSER_BUFFER_SIZE) &&
2392: ((IS_ASCII_LETTER(NXT(1+i))) || (IS_ASCII_DIGIT(NXT(1+i))) ||
2393: (NXT(1+i) == ':') || (NXT(1+i) == '-') || (NXT(1+i) == '_'))) {
2394: if ((NXT(1+i) >= 'A') && (NXT(1+i) <= 'Z')) loc[i] = NXT(1+i) + 0x20;
2395: else loc[i] = NXT(1+i);
2396: i++;
2397: }
2398:
2399: return(xmlDictLookup(ctxt->dict, loc, i));
2400: }
2401:
2402:
2403: /**
2404: * htmlParseName:
2405: * @ctxt: an HTML parser context
2406: *
2407: * parse an HTML name, this routine is case sensitive.
2408: *
2409: * Returns the Name parsed or NULL
2410: */
2411:
2412: static const xmlChar *
2413: htmlParseName(htmlParserCtxtPtr ctxt) {
2414: const xmlChar *in;
2415: const xmlChar *ret;
2416: int count = 0;
2417:
2418: GROW;
2419:
2420: /*
2421: * Accelerator for simple ASCII names
2422: */
2423: in = ctxt->input->cur;
2424: if (((*in >= 0x61) && (*in <= 0x7A)) ||
2425: ((*in >= 0x41) && (*in <= 0x5A)) ||
2426: (*in == '_') || (*in == ':')) {
2427: in++;
2428: while (((*in >= 0x61) && (*in <= 0x7A)) ||
2429: ((*in >= 0x41) && (*in <= 0x5A)) ||
2430: ((*in >= 0x30) && (*in <= 0x39)) ||
2431: (*in == '_') || (*in == '-') ||
2432: (*in == ':') || (*in == '.'))
2433: in++;
2434: if ((*in > 0) && (*in < 0x80)) {
2435: count = in - ctxt->input->cur;
2436: ret = xmlDictLookup(ctxt->dict, ctxt->input->cur, count);
2437: ctxt->input->cur = in;
2438: ctxt->nbChars += count;
2439: ctxt->input->col += count;
2440: return(ret);
2441: }
2442: }
2443: return(htmlParseNameComplex(ctxt));
2444: }
2445:
2446: static const xmlChar *
2447: htmlParseNameComplex(xmlParserCtxtPtr ctxt) {
2448: int len = 0, l;
2449: int c;
2450: int count = 0;
2451:
2452: /*
2453: * Handler for more complex cases
2454: */
2455: GROW;
2456: c = CUR_CHAR(l);
2457: if ((c == ' ') || (c == '>') || (c == '/') || /* accelerators */
2458: (!IS_LETTER(c) && (c != '_') &&
2459: (c != ':'))) {
2460: return(NULL);
2461: }
2462:
2463: while ((c != ' ') && (c != '>') && (c != '/') && /* test bigname.xml */
2464: ((IS_LETTER(c)) || (IS_DIGIT(c)) ||
2465: (c == '.') || (c == '-') ||
2466: (c == '_') || (c == ':') ||
2467: (IS_COMBINING(c)) ||
2468: (IS_EXTENDER(c)))) {
2469: if (count++ > 100) {
2470: count = 0;
2471: GROW;
2472: }
2473: len += l;
2474: NEXTL(l);
2475: c = CUR_CHAR(l);
2476: }
2477: return(xmlDictLookup(ctxt->dict, ctxt->input->cur - len, len));
2478: }
2479:
2480:
2481: /**
2482: * htmlParseHTMLAttribute:
2483: * @ctxt: an HTML parser context
2484: * @stop: a char stop value
2485: *
2486: * parse an HTML attribute value till the stop (quote), if
2487: * stop is 0 then it stops at the first space
2488: *
2489: * Returns the attribute parsed or NULL
2490: */
2491:
2492: static xmlChar *
2493: htmlParseHTMLAttribute(htmlParserCtxtPtr ctxt, const xmlChar stop) {
2494: xmlChar *buffer = NULL;
2495: int buffer_size = 0;
2496: xmlChar *out = NULL;
2497: const xmlChar *name = NULL;
2498: const xmlChar *cur = NULL;
2499: const htmlEntityDesc * ent;
2500:
2501: /*
2502: * allocate a translation buffer.
2503: */
2504: buffer_size = HTML_PARSER_BUFFER_SIZE;
2505: buffer = (xmlChar *) xmlMallocAtomic(buffer_size * sizeof(xmlChar));
2506: if (buffer == NULL) {
2507: htmlErrMemory(ctxt, "buffer allocation failed\n");
2508: return(NULL);
2509: }
2510: out = buffer;
2511:
2512: /*
2513: * Ok loop until we reach one of the ending chars
2514: */
2515: while ((CUR != 0) && (CUR != stop)) {
2516: if ((stop == 0) && (CUR == '>')) break;
2517: if ((stop == 0) && (IS_BLANK_CH(CUR))) break;
2518: if (CUR == '&') {
2519: if (NXT(1) == '#') {
2520: unsigned int c;
2521: int bits;
2522:
2523: c = htmlParseCharRef(ctxt);
2524: if (c < 0x80)
2525: { *out++ = c; bits= -6; }
2526: else if (c < 0x800)
2527: { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; }
2528: else if (c < 0x10000)
2529: { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; }
2530: else
2531: { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; }
2532:
2533: for ( ; bits >= 0; bits-= 6) {
2534: *out++ = ((c >> bits) & 0x3F) | 0x80;
2535: }
2536:
2537: if (out - buffer > buffer_size - 100) {
2538: int indx = out - buffer;
2539:
2540: growBuffer(buffer);
2541: out = &buffer[indx];
2542: }
2543: } else {
2544: ent = htmlParseEntityRef(ctxt, &name);
2545: if (name == NULL) {
2546: *out++ = '&';
2547: if (out - buffer > buffer_size - 100) {
2548: int indx = out - buffer;
2549:
2550: growBuffer(buffer);
2551: out = &buffer[indx];
2552: }
2553: } else if (ent == NULL) {
2554: *out++ = '&';
2555: cur = name;
2556: while (*cur != 0) {
2557: if (out - buffer > buffer_size - 100) {
2558: int indx = out - buffer;
2559:
2560: growBuffer(buffer);
2561: out = &buffer[indx];
2562: }
2563: *out++ = *cur++;
2564: }
2565: } else {
2566: unsigned int c;
2567: int bits;
2568:
2569: if (out - buffer > buffer_size - 100) {
2570: int indx = out - buffer;
2571:
2572: growBuffer(buffer);
2573: out = &buffer[indx];
2574: }
2575: c = ent->value;
2576: if (c < 0x80)
2577: { *out++ = c; bits= -6; }
2578: else if (c < 0x800)
2579: { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; }
2580: else if (c < 0x10000)
2581: { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; }
2582: else
2583: { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; }
2584:
2585: for ( ; bits >= 0; bits-= 6) {
2586: *out++ = ((c >> bits) & 0x3F) | 0x80;
2587: }
2588: }
2589: }
2590: } else {
2591: unsigned int c;
2592: int bits, l;
2593:
2594: if (out - buffer > buffer_size - 100) {
2595: int indx = out - buffer;
2596:
2597: growBuffer(buffer);
2598: out = &buffer[indx];
2599: }
2600: c = CUR_CHAR(l);
2601: if (c < 0x80)
2602: { *out++ = c; bits= -6; }
2603: else if (c < 0x800)
2604: { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; }
2605: else if (c < 0x10000)
2606: { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; }
2607: else
2608: { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; }
2609:
2610: for ( ; bits >= 0; bits-= 6) {
2611: *out++ = ((c >> bits) & 0x3F) | 0x80;
2612: }
2613: NEXT;
2614: }
2615: }
2616: *out = 0;
2617: return(buffer);
2618: }
2619:
2620: /**
2621: * htmlParseEntityRef:
2622: * @ctxt: an HTML parser context
2623: * @str: location to store the entity name
2624: *
2625: * parse an HTML ENTITY references
2626: *
2627: * [68] EntityRef ::= '&' Name ';'
2628: *
2629: * Returns the associated htmlEntityDescPtr if found, or NULL otherwise,
2630: * if non-NULL *str will have to be freed by the caller.
2631: */
2632: const htmlEntityDesc *
2633: htmlParseEntityRef(htmlParserCtxtPtr ctxt, const xmlChar **str) {
2634: const xmlChar *name;
2635: const htmlEntityDesc * ent = NULL;
2636:
2637: if (str != NULL) *str = NULL;
2638: if ((ctxt == NULL) || (ctxt->input == NULL)) return(NULL);
2639:
2640: if (CUR == '&') {
2641: NEXT;
2642: name = htmlParseName(ctxt);
2643: if (name == NULL) {
2644: htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
2645: "htmlParseEntityRef: no name\n", NULL, NULL);
2646: } else {
2647: GROW;
2648: if (CUR == ';') {
2649: if (str != NULL)
2650: *str = name;
2651:
2652: /*
2653: * Lookup the entity in the table.
2654: */
2655: ent = htmlEntityLookup(name);
2656: if (ent != NULL) /* OK that's ugly !!! */
2657: NEXT;
2658: } else {
2659: htmlParseErr(ctxt, XML_ERR_ENTITYREF_SEMICOL_MISSING,
2660: "htmlParseEntityRef: expecting ';'\n",
2661: NULL, NULL);
2662: if (str != NULL)
2663: *str = name;
2664: }
2665: }
2666: }
2667: return(ent);
2668: }
2669:
2670: /**
2671: * htmlParseAttValue:
2672: * @ctxt: an HTML parser context
2673: *
2674: * parse a value for an attribute
2675: * Note: the parser won't do substitution of entities here, this
2676: * will be handled later in xmlStringGetNodeList, unless it was
2677: * asked for ctxt->replaceEntities != 0
2678: *
2679: * Returns the AttValue parsed or NULL.
2680: */
2681:
2682: static xmlChar *
2683: htmlParseAttValue(htmlParserCtxtPtr ctxt) {
2684: xmlChar *ret = NULL;
2685:
2686: if (CUR == '"') {
2687: NEXT;
2688: ret = htmlParseHTMLAttribute(ctxt, '"');
2689: if (CUR != '"') {
2690: htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
2691: "AttValue: \" expected\n", NULL, NULL);
2692: } else
2693: NEXT;
2694: } else if (CUR == '\'') {
2695: NEXT;
2696: ret = htmlParseHTMLAttribute(ctxt, '\'');
2697: if (CUR != '\'') {
2698: htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
2699: "AttValue: ' expected\n", NULL, NULL);
2700: } else
2701: NEXT;
2702: } else {
2703: /*
2704: * That's an HTMLism, the attribute value may not be quoted
2705: */
2706: ret = htmlParseHTMLAttribute(ctxt, 0);
2707: if (ret == NULL) {
2708: htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_WITHOUT_VALUE,
2709: "AttValue: no value found\n", NULL, NULL);
2710: }
2711: }
2712: return(ret);
2713: }
2714:
2715: /**
2716: * htmlParseSystemLiteral:
2717: * @ctxt: an HTML parser context
2718: *
2719: * parse an HTML Literal
2720: *
2721: * [11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'")
2722: *
2723: * Returns the SystemLiteral parsed or NULL
2724: */
2725:
2726: static xmlChar *
2727: htmlParseSystemLiteral(htmlParserCtxtPtr ctxt) {
2728: const xmlChar *q;
2729: xmlChar *ret = NULL;
2730:
2731: if (CUR == '"') {
2732: NEXT;
2733: q = CUR_PTR;
2734: while ((IS_CHAR_CH(CUR)) && (CUR != '"'))
2735: NEXT;
2736: if (!IS_CHAR_CH(CUR)) {
2737: htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED,
2738: "Unfinished SystemLiteral\n", NULL, NULL);
2739: } else {
2740: ret = xmlStrndup(q, CUR_PTR - q);
2741: NEXT;
2742: }
2743: } else if (CUR == '\'') {
2744: NEXT;
2745: q = CUR_PTR;
2746: while ((IS_CHAR_CH(CUR)) && (CUR != '\''))
2747: NEXT;
2748: if (!IS_CHAR_CH(CUR)) {
2749: htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED,
2750: "Unfinished SystemLiteral\n", NULL, NULL);
2751: } else {
2752: ret = xmlStrndup(q, CUR_PTR - q);
2753: NEXT;
2754: }
2755: } else {
2756: htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_STARTED,
2757: " or ' expected\n", NULL, NULL);
2758: }
2759:
2760: return(ret);
2761: }
2762:
2763: /**
2764: * htmlParsePubidLiteral:
2765: * @ctxt: an HTML parser context
2766: *
2767: * parse an HTML public literal
2768: *
2769: * [12] PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'"
2770: *
2771: * Returns the PubidLiteral parsed or NULL.
2772: */
2773:
2774: static xmlChar *
2775: htmlParsePubidLiteral(htmlParserCtxtPtr ctxt) {
2776: const xmlChar *q;
2777: xmlChar *ret = NULL;
2778: /*
2779: * Name ::= (Letter | '_') (NameChar)*
2780: */
2781: if (CUR == '"') {
2782: NEXT;
2783: q = CUR_PTR;
2784: while (IS_PUBIDCHAR_CH(CUR)) NEXT;
2785: if (CUR != '"') {
2786: htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED,
2787: "Unfinished PubidLiteral\n", NULL, NULL);
2788: } else {
2789: ret = xmlStrndup(q, CUR_PTR - q);
2790: NEXT;
2791: }
2792: } else if (CUR == '\'') {
2793: NEXT;
2794: q = CUR_PTR;
2795: while ((IS_PUBIDCHAR_CH(CUR)) && (CUR != '\''))
2796: NEXT;
2797: if (CUR != '\'') {
2798: htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED,
2799: "Unfinished PubidLiteral\n", NULL, NULL);
2800: } else {
2801: ret = xmlStrndup(q, CUR_PTR - q);
2802: NEXT;
2803: }
2804: } else {
2805: htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_STARTED,
2806: "PubidLiteral \" or ' expected\n", NULL, NULL);
2807: }
2808:
2809: return(ret);
2810: }
2811:
2812: /**
2813: * htmlParseScript:
2814: * @ctxt: an HTML parser context
2815: *
2816: * parse the content of an HTML SCRIPT or STYLE element
2817: * http://www.w3.org/TR/html4/sgml/dtd.html#Script
2818: * http://www.w3.org/TR/html4/sgml/dtd.html#StyleSheet
2819: * http://www.w3.org/TR/html4/types.html#type-script
2820: * http://www.w3.org/TR/html4/types.html#h-6.15
2821: * http://www.w3.org/TR/html4/appendix/notes.html#h-B.3.2.1
2822: *
2823: * Script data ( %Script; in the DTD) can be the content of the SCRIPT
2824: * element and the value of intrinsic event attributes. User agents must
2825: * not evaluate script data as HTML markup but instead must pass it on as
2826: * data to a script engine.
2827: * NOTES:
2828: * - The content is passed like CDATA
2829: * - the attributes for style and scripting "onXXX" are also described
2830: * as CDATA but SGML allows entities references in attributes so their
2831: * processing is identical as other attributes
2832: */
2833: static void
2834: htmlParseScript(htmlParserCtxtPtr ctxt) {
2835: xmlChar buf[HTML_PARSER_BIG_BUFFER_SIZE + 5];
2836: int nbchar = 0;
2837: int cur,l;
2838:
2839: SHRINK;
2840: cur = CUR_CHAR(l);
2841: while (IS_CHAR_CH(cur)) {
2842: if ((cur == '<') && (NXT(1) == '/')) {
2843: /*
2844: * One should break here, the specification is clear:
2845: * Authors should therefore escape "</" within the content.
2846: * Escape mechanisms are specific to each scripting or
2847: * style sheet language.
2848: *
2849: * In recovery mode, only break if end tag match the
2850: * current tag, effectively ignoring all tags inside the
2851: * script/style block and treating the entire block as
2852: * CDATA.
2853: */
2854: if (ctxt->recovery) {
2855: if (xmlStrncasecmp(ctxt->name, ctxt->input->cur+2,
2856: xmlStrlen(ctxt->name)) == 0)
2857: {
2858: break; /* while */
2859: } else {
2860: htmlParseErr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
2861: "Element %s embeds close tag\n",
2862: ctxt->name, NULL);
2863: }
2864: } else {
2865: if (((NXT(2) >= 'A') && (NXT(2) <= 'Z')) ||
2866: ((NXT(2) >= 'a') && (NXT(2) <= 'z')))
2867: {
2868: break; /* while */
2869: }
2870: }
2871: }
2872: COPY_BUF(l,buf,nbchar,cur);
2873: if (nbchar >= HTML_PARSER_BIG_BUFFER_SIZE) {
2874: if (ctxt->sax->cdataBlock!= NULL) {
2875: /*
2876: * Insert as CDATA, which is the same as HTML_PRESERVE_NODE
2877: */
2878: ctxt->sax->cdataBlock(ctxt->userData, buf, nbchar);
2879: } else if (ctxt->sax->characters != NULL) {
2880: ctxt->sax->characters(ctxt->userData, buf, nbchar);
2881: }
2882: nbchar = 0;
2883: }
2884: GROW;
2885: NEXTL(l);
2886: cur = CUR_CHAR(l);
2887: }
2888:
2889: if ((!(IS_CHAR_CH(cur))) && (!((cur == 0) && (ctxt->progressive)))) {
2890: htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
2891: "Invalid char in CDATA 0x%X\n", cur);
2892: if (ctxt->input->cur < ctxt->input->end) {
2893: NEXT;
2894: }
2895: }
2896:
2897: if ((nbchar != 0) && (ctxt->sax != NULL) && (!ctxt->disableSAX)) {
2898: if (ctxt->sax->cdataBlock!= NULL) {
2899: /*
2900: * Insert as CDATA, which is the same as HTML_PRESERVE_NODE
2901: */
2902: ctxt->sax->cdataBlock(ctxt->userData, buf, nbchar);
2903: } else if (ctxt->sax->characters != NULL) {
2904: ctxt->sax->characters(ctxt->userData, buf, nbchar);
2905: }
2906: }
2907: }
2908:
2909:
2910: /**
2911: * htmlParseCharData:
2912: * @ctxt: an HTML parser context
2913: *
2914: * parse a CharData section.
2915: * if we are within a CDATA section ']]>' marks an end of section.
2916: *
2917: * [14] CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*)
2918: */
2919:
2920: static void
2921: htmlParseCharData(htmlParserCtxtPtr ctxt) {
2922: xmlChar buf[HTML_PARSER_BIG_BUFFER_SIZE + 5];
2923: int nbchar = 0;
2924: int cur, l;
2925: int chunk = 0;
2926:
2927: SHRINK;
2928: cur = CUR_CHAR(l);
2929: while (((cur != '<') || (ctxt->token == '<')) &&
2930: ((cur != '&') || (ctxt->token == '&')) &&
2931: (cur != 0)) {
2932: if (!(IS_CHAR(cur))) {
2933: htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
2934: "Invalid char in CDATA 0x%X\n", cur);
2935: } else {
2936: COPY_BUF(l,buf,nbchar,cur);
2937: }
2938: if (nbchar >= HTML_PARSER_BIG_BUFFER_SIZE) {
2939: /*
2940: * Ok the segment is to be consumed as chars.
2941: */
2942: if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
2943: if (areBlanks(ctxt, buf, nbchar)) {
2944: if (ctxt->sax->ignorableWhitespace != NULL)
2945: ctxt->sax->ignorableWhitespace(ctxt->userData,
2946: buf, nbchar);
2947: } else {
2948: htmlCheckParagraph(ctxt);
2949: if (ctxt->sax->characters != NULL)
2950: ctxt->sax->characters(ctxt->userData, buf, nbchar);
2951: }
2952: }
2953: nbchar = 0;
2954: }
2955: NEXTL(l);
2956: chunk++;
2957: if (chunk > HTML_PARSER_BUFFER_SIZE) {
2958: chunk = 0;
2959: SHRINK;
2960: GROW;
2961: }
2962: cur = CUR_CHAR(l);
2963: if (cur == 0) {
2964: SHRINK;
2965: GROW;
2966: cur = CUR_CHAR(l);
2967: }
2968: }
2969: if (nbchar != 0) {
2970: buf[nbchar] = 0;
2971:
2972: /*
2973: * Ok the segment is to be consumed as chars.
2974: */
2975: if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
2976: if (areBlanks(ctxt, buf, nbchar)) {
2977: if (ctxt->sax->ignorableWhitespace != NULL)
2978: ctxt->sax->ignorableWhitespace(ctxt->userData, buf, nbchar);
2979: } else {
2980: htmlCheckParagraph(ctxt);
2981: if (ctxt->sax->characters != NULL)
2982: ctxt->sax->characters(ctxt->userData, buf, nbchar);
2983: }
2984: }
2985: } else {
2986: /*
2987: * Loop detection
2988: */
2989: if (cur == 0)
2990: ctxt->instate = XML_PARSER_EOF;
2991: }
2992: }
2993:
2994: /**
2995: * htmlParseExternalID:
2996: * @ctxt: an HTML parser context
2997: * @publicID: a xmlChar** receiving PubidLiteral
2998: *
2999: * Parse an External ID or a Public ID
3000: *
3001: * [75] ExternalID ::= 'SYSTEM' S SystemLiteral
3002: * | 'PUBLIC' S PubidLiteral S SystemLiteral
3003: *
3004: * [83] PublicID ::= 'PUBLIC' S PubidLiteral
3005: *
3006: * Returns the function returns SystemLiteral and in the second
3007: * case publicID receives PubidLiteral, is strict is off
3008: * it is possible to return NULL and have publicID set.
3009: */
3010:
3011: static xmlChar *
3012: htmlParseExternalID(htmlParserCtxtPtr ctxt, xmlChar **publicID) {
3013: xmlChar *URI = NULL;
3014:
3015: if ((UPPER == 'S') && (UPP(1) == 'Y') &&
3016: (UPP(2) == 'S') && (UPP(3) == 'T') &&
3017: (UPP(4) == 'E') && (UPP(5) == 'M')) {
3018: SKIP(6);
3019: if (!IS_BLANK_CH(CUR)) {
3020: htmlParseErr(ctxt, XML_ERR_SPACE_REQUIRED,
3021: "Space required after 'SYSTEM'\n", NULL, NULL);
3022: }
3023: SKIP_BLANKS;
3024: URI = htmlParseSystemLiteral(ctxt);
3025: if (URI == NULL) {
3026: htmlParseErr(ctxt, XML_ERR_URI_REQUIRED,
3027: "htmlParseExternalID: SYSTEM, no URI\n", NULL, NULL);
3028: }
3029: } else if ((UPPER == 'P') && (UPP(1) == 'U') &&
3030: (UPP(2) == 'B') && (UPP(3) == 'L') &&
3031: (UPP(4) == 'I') && (UPP(5) == 'C')) {
3032: SKIP(6);
3033: if (!IS_BLANK_CH(CUR)) {
3034: htmlParseErr(ctxt, XML_ERR_SPACE_REQUIRED,
3035: "Space required after 'PUBLIC'\n", NULL, NULL);
3036: }
3037: SKIP_BLANKS;
3038: *publicID = htmlParsePubidLiteral(ctxt);
3039: if (*publicID == NULL) {
3040: htmlParseErr(ctxt, XML_ERR_PUBID_REQUIRED,
3041: "htmlParseExternalID: PUBLIC, no Public Identifier\n",
3042: NULL, NULL);
3043: }
3044: SKIP_BLANKS;
3045: if ((CUR == '"') || (CUR == '\'')) {
3046: URI = htmlParseSystemLiteral(ctxt);
3047: }
3048: }
3049: return(URI);
3050: }
3051:
3052: /**
3053: * xmlParsePI:
3054: * @ctxt: an XML parser context
3055: *
3056: * parse an XML Processing Instruction.
3057: *
3058: * [16] PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'
3059: */
3060: static void
3061: htmlParsePI(htmlParserCtxtPtr ctxt) {
3062: xmlChar *buf = NULL;
3063: int len = 0;
3064: int size = HTML_PARSER_BUFFER_SIZE;
3065: int cur, l;
3066: const xmlChar *target;
3067: xmlParserInputState state;
3068: int count = 0;
3069:
3070: if ((RAW == '<') && (NXT(1) == '?')) {
3071: state = ctxt->instate;
3072: ctxt->instate = XML_PARSER_PI;
3073: /*
3074: * this is a Processing Instruction.
3075: */
3076: SKIP(2);
3077: SHRINK;
3078:
3079: /*
3080: * Parse the target name and check for special support like
3081: * namespace.
3082: */
3083: target = htmlParseName(ctxt);
3084: if (target != NULL) {
3085: if (RAW == '>') {
3086: SKIP(1);
3087:
3088: /*
3089: * SAX: PI detected.
3090: */
3091: if ((ctxt->sax) && (!ctxt->disableSAX) &&
3092: (ctxt->sax->processingInstruction != NULL))
3093: ctxt->sax->processingInstruction(ctxt->userData,
3094: target, NULL);
3095: ctxt->instate = state;
3096: return;
3097: }
3098: buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar));
3099: if (buf == NULL) {
3100: htmlErrMemory(ctxt, NULL);
3101: ctxt->instate = state;
3102: return;
3103: }
3104: cur = CUR;
3105: if (!IS_BLANK(cur)) {
3106: htmlParseErr(ctxt, XML_ERR_SPACE_REQUIRED,
3107: "ParsePI: PI %s space expected\n", target, NULL);
3108: }
3109: SKIP_BLANKS;
3110: cur = CUR_CHAR(l);
3111: while (IS_CHAR(cur) && (cur != '>')) {
3112: if (len + 5 >= size) {
3113: xmlChar *tmp;
3114:
3115: size *= 2;
3116: tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar));
3117: if (tmp == NULL) {
3118: htmlErrMemory(ctxt, NULL);
3119: xmlFree(buf);
3120: ctxt->instate = state;
3121: return;
3122: }
3123: buf = tmp;
3124: }
3125: count++;
3126: if (count > 50) {
3127: GROW;
3128: count = 0;
3129: }
3130: COPY_BUF(l,buf,len,cur);
3131: NEXTL(l);
3132: cur = CUR_CHAR(l);
3133: if (cur == 0) {
3134: SHRINK;
3135: GROW;
3136: cur = CUR_CHAR(l);
3137: }
3138: }
3139: buf[len] = 0;
3140: if (cur != '>') {
3141: htmlParseErr(ctxt, XML_ERR_PI_NOT_FINISHED,
3142: "ParsePI: PI %s never end ...\n", target, NULL);
3143: } else {
3144: SKIP(1);
3145:
3146: /*
3147: * SAX: PI detected.
3148: */
3149: if ((ctxt->sax) && (!ctxt->disableSAX) &&
3150: (ctxt->sax->processingInstruction != NULL))
3151: ctxt->sax->processingInstruction(ctxt->userData,
3152: target, buf);
3153: }
3154: xmlFree(buf);
3155: } else {
3156: htmlParseErr(ctxt, XML_ERR_PI_NOT_STARTED,
3157: "PI is not started correctly", NULL, NULL);
3158: }
3159: ctxt->instate = state;
3160: }
3161: }
3162:
3163: /**
3164: * htmlParseComment:
3165: * @ctxt: an HTML parser context
3166: *
3167: * Parse an XML (SGML) comment <!-- .... -->
3168: *
3169: * [15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
3170: */
3171: static void
3172: htmlParseComment(htmlParserCtxtPtr ctxt) {
3173: xmlChar *buf = NULL;
3174: int len;
3175: int size = HTML_PARSER_BUFFER_SIZE;
3176: int q, ql;
3177: int r, rl;
3178: int cur, l;
3179: xmlParserInputState state;
3180:
3181: /*
3182: * Check that there is a comment right here.
3183: */
3184: if ((RAW != '<') || (NXT(1) != '!') ||
3185: (NXT(2) != '-') || (NXT(3) != '-')) return;
3186:
3187: state = ctxt->instate;
3188: ctxt->instate = XML_PARSER_COMMENT;
3189: SHRINK;
3190: SKIP(4);
3191: buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar));
3192: if (buf == NULL) {
3193: htmlErrMemory(ctxt, "buffer allocation failed\n");
3194: ctxt->instate = state;
3195: return;
3196: }
3197: q = CUR_CHAR(ql);
3198: NEXTL(ql);
3199: r = CUR_CHAR(rl);
3200: NEXTL(rl);
3201: cur = CUR_CHAR(l);
3202: len = 0;
3203: while (IS_CHAR(cur) &&
3204: ((cur != '>') ||
3205: (r != '-') || (q != '-'))) {
3206: if (len + 5 >= size) {
3207: xmlChar *tmp;
3208:
3209: size *= 2;
3210: tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar));
3211: if (tmp == NULL) {
3212: xmlFree(buf);
3213: htmlErrMemory(ctxt, "growing buffer failed\n");
3214: ctxt->instate = state;
3215: return;
3216: }
3217: buf = tmp;
3218: }
3219: COPY_BUF(ql,buf,len,q);
3220: q = r;
3221: ql = rl;
3222: r = cur;
3223: rl = l;
3224: NEXTL(l);
3225: cur = CUR_CHAR(l);
3226: if (cur == 0) {
3227: SHRINK;
3228: GROW;
3229: cur = CUR_CHAR(l);
3230: }
3231: }
3232: buf[len] = 0;
3233: if (!IS_CHAR(cur)) {
3234: htmlParseErr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
3235: "Comment not terminated \n<!--%.50s\n", buf, NULL);
3236: xmlFree(buf);
3237: } else {
3238: NEXT;
3239: if ((ctxt->sax != NULL) && (ctxt->sax->comment != NULL) &&
3240: (!ctxt->disableSAX))
3241: ctxt->sax->comment(ctxt->userData, buf);
3242: xmlFree(buf);
3243: }
3244: ctxt->instate = state;
3245: }
3246:
3247: /**
3248: * htmlParseCharRef:
3249: * @ctxt: an HTML parser context
3250: *
3251: * parse Reference declarations
3252: *
3253: * [66] CharRef ::= '&#' [0-9]+ ';' |
3254: * '&#x' [0-9a-fA-F]+ ';'
3255: *
3256: * Returns the value parsed (as an int)
3257: */
3258: int
3259: htmlParseCharRef(htmlParserCtxtPtr ctxt) {
3260: int val = 0;
3261:
3262: if ((ctxt == NULL) || (ctxt->input == NULL)) {
3263: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
3264: "htmlParseCharRef: context error\n",
3265: NULL, NULL);
3266: return(0);
3267: }
3268: if ((CUR == '&') && (NXT(1) == '#') &&
3269: ((NXT(2) == 'x') || NXT(2) == 'X')) {
3270: SKIP(3);
3271: while (CUR != ';') {
3272: if ((CUR >= '0') && (CUR <= '9'))
3273: val = val * 16 + (CUR - '0');
3274: else if ((CUR >= 'a') && (CUR <= 'f'))
3275: val = val * 16 + (CUR - 'a') + 10;
3276: else if ((CUR >= 'A') && (CUR <= 'F'))
3277: val = val * 16 + (CUR - 'A') + 10;
3278: else {
3279: htmlParseErr(ctxt, XML_ERR_INVALID_HEX_CHARREF,
3280: "htmlParseCharRef: missing semicolon\n",
3281: NULL, NULL);
3282: break;
3283: }
3284: NEXT;
3285: }
3286: if (CUR == ';')
3287: NEXT;
3288: } else if ((CUR == '&') && (NXT(1) == '#')) {
3289: SKIP(2);
3290: while (CUR != ';') {
3291: if ((CUR >= '0') && (CUR <= '9'))
3292: val = val * 10 + (CUR - '0');
3293: else {
3294: htmlParseErr(ctxt, XML_ERR_INVALID_DEC_CHARREF,
3295: "htmlParseCharRef: missing semicolon\n",
3296: NULL, NULL);
3297: break;
3298: }
3299: NEXT;
3300: }
3301: if (CUR == ';')
3302: NEXT;
3303: } else {
3304: htmlParseErr(ctxt, XML_ERR_INVALID_CHARREF,
3305: "htmlParseCharRef: invalid value\n", NULL, NULL);
3306: }
3307: /*
3308: * Check the value IS_CHAR ...
3309: */
3310: if (IS_CHAR(val)) {
3311: return(val);
3312: } else {
3313: htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
3314: "htmlParseCharRef: invalid xmlChar value %d\n",
3315: val);
3316: }
3317: return(0);
3318: }
3319:
3320:
3321: /**
3322: * htmlParseDocTypeDecl:
3323: * @ctxt: an HTML parser context
3324: *
3325: * parse a DOCTYPE declaration
3326: *
3327: * [28] doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S?
3328: * ('[' (markupdecl | PEReference | S)* ']' S?)? '>'
3329: */
3330:
3331: static void
3332: htmlParseDocTypeDecl(htmlParserCtxtPtr ctxt) {
3333: const xmlChar *name;
3334: xmlChar *ExternalID = NULL;
3335: xmlChar *URI = NULL;
3336:
3337: /*
3338: * We know that '<!DOCTYPE' has been detected.
3339: */
3340: SKIP(9);
3341:
3342: SKIP_BLANKS;
3343:
3344: /*
3345: * Parse the DOCTYPE name.
3346: */
3347: name = htmlParseName(ctxt);
3348: if (name == NULL) {
3349: htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
3350: "htmlParseDocTypeDecl : no DOCTYPE name !\n",
3351: NULL, NULL);
3352: }
3353: /*
3354: * Check that upper(name) == "HTML" !!!!!!!!!!!!!
3355: */
3356:
3357: SKIP_BLANKS;
3358:
3359: /*
3360: * Check for SystemID and ExternalID
3361: */
3362: URI = htmlParseExternalID(ctxt, &ExternalID);
3363: SKIP_BLANKS;
3364:
3365: /*
3366: * We should be at the end of the DOCTYPE declaration.
3367: */
3368: if (CUR != '>') {
3369: htmlParseErr(ctxt, XML_ERR_DOCTYPE_NOT_FINISHED,
3370: "DOCTYPE improperly terminated\n", NULL, NULL);
3371: /* We shouldn't try to resynchronize ... */
3372: }
3373: NEXT;
3374:
3375: /*
3376: * Create or update the document accordingly to the DOCTYPE
3377: */
3378: if ((ctxt->sax != NULL) && (ctxt->sax->internalSubset != NULL) &&
3379: (!ctxt->disableSAX))
3380: ctxt->sax->internalSubset(ctxt->userData, name, ExternalID, URI);
3381:
3382: /*
3383: * Cleanup, since we don't use all those identifiers
3384: */
3385: if (URI != NULL) xmlFree(URI);
3386: if (ExternalID != NULL) xmlFree(ExternalID);
3387: }
3388:
3389: /**
3390: * htmlParseAttribute:
3391: * @ctxt: an HTML parser context
3392: * @value: a xmlChar ** used to store the value of the attribute
3393: *
3394: * parse an attribute
3395: *
3396: * [41] Attribute ::= Name Eq AttValue
3397: *
3398: * [25] Eq ::= S? '=' S?
3399: *
3400: * With namespace:
3401: *
3402: * [NS 11] Attribute ::= QName Eq AttValue
3403: *
3404: * Also the case QName == xmlns:??? is handled independently as a namespace
3405: * definition.
3406: *
3407: * Returns the attribute name, and the value in *value.
3408: */
3409:
3410: static const xmlChar *
3411: htmlParseAttribute(htmlParserCtxtPtr ctxt, xmlChar **value) {
3412: const xmlChar *name;
3413: xmlChar *val = NULL;
3414:
3415: *value = NULL;
3416: name = htmlParseHTMLName(ctxt);
3417: if (name == NULL) {
3418: htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
3419: "error parsing attribute name\n", NULL, NULL);
3420: return(NULL);
3421: }
3422:
3423: /*
3424: * read the value
3425: */
3426: SKIP_BLANKS;
3427: if (CUR == '=') {
3428: NEXT;
3429: SKIP_BLANKS;
3430: val = htmlParseAttValue(ctxt);
3431: }
3432:
3433: *value = val;
3434: return(name);
3435: }
3436:
3437: /**
3438: * htmlCheckEncoding:
3439: * @ctxt: an HTML parser context
3440: * @attvalue: the attribute value
3441: *
3442: * Checks an http-equiv attribute from a Meta tag to detect
3443: * the encoding
3444: * If a new encoding is detected the parser is switched to decode
3445: * it and pass UTF8
3446: */
3447: static void
3448: htmlCheckEncoding(htmlParserCtxtPtr ctxt, const xmlChar *attvalue) {
3449: const xmlChar *encoding;
3450:
3451: if ((ctxt == NULL) || (attvalue == NULL))
3452: return;
3453:
3454: /* do not change encoding */
3455: if (ctxt->input->encoding != NULL)
3456: return;
3457:
3458: encoding = xmlStrcasestr(attvalue, BAD_CAST"charset=");
3459: if (encoding != NULL) {
3460: encoding += 8;
3461: } else {
3462: encoding = xmlStrcasestr(attvalue, BAD_CAST"charset =");
3463: if (encoding != NULL)
3464: encoding += 9;
3465: }
3466: if (encoding != NULL) {
3467: xmlCharEncoding enc;
3468: xmlCharEncodingHandlerPtr handler;
3469:
3470: while ((*encoding == ' ') || (*encoding == '\t')) encoding++;
3471:
3472: if (ctxt->input->encoding != NULL)
3473: xmlFree((xmlChar *) ctxt->input->encoding);
3474: ctxt->input->encoding = xmlStrdup(encoding);
3475:
3476: enc = xmlParseCharEncoding((const char *) encoding);
3477: /*
3478: * registered set of known encodings
3479: */
3480: if (enc != XML_CHAR_ENCODING_ERROR) {
3481: if (((enc == XML_CHAR_ENCODING_UTF16LE) ||
3482: (enc == XML_CHAR_ENCODING_UTF16BE) ||
3483: (enc == XML_CHAR_ENCODING_UCS4LE) ||
3484: (enc == XML_CHAR_ENCODING_UCS4BE)) &&
3485: (ctxt->input->buf != NULL) &&
3486: (ctxt->input->buf->encoder == NULL)) {
3487: htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
3488: "htmlCheckEncoding: wrong encoding meta\n",
3489: NULL, NULL);
3490: } else {
3491: xmlSwitchEncoding(ctxt, enc);
3492: }
3493: ctxt->charset = XML_CHAR_ENCODING_UTF8;
3494: } else {
3495: /*
3496: * fallback for unknown encodings
3497: */
3498: handler = xmlFindCharEncodingHandler((const char *) encoding);
3499: if (handler != NULL) {
3500: xmlSwitchToEncoding(ctxt, handler);
3501: ctxt->charset = XML_CHAR_ENCODING_UTF8;
3502: } else {
3503: ctxt->errNo = XML_ERR_UNSUPPORTED_ENCODING;
3504: }
3505: }
3506:
3507: if ((ctxt->input->buf != NULL) &&
3508: (ctxt->input->buf->encoder != NULL) &&
3509: (ctxt->input->buf->raw != NULL) &&
3510: (ctxt->input->buf->buffer != NULL)) {
3511: int nbchars;
3512: int processed;
3513:
3514: /*
3515: * convert as much as possible to the parser reading buffer.
3516: */
3517: processed = ctxt->input->cur - ctxt->input->base;
3518: xmlBufferShrink(ctxt->input->buf->buffer, processed);
3519: nbchars = xmlCharEncInFunc(ctxt->input->buf->encoder,
3520: ctxt->input->buf->buffer,
3521: ctxt->input->buf->raw);
3522: if (nbchars < 0) {
3523: htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
3524: "htmlCheckEncoding: encoder error\n",
3525: NULL, NULL);
3526: }
3527: ctxt->input->base =
3528: ctxt->input->cur = ctxt->input->buf->buffer->content;
3529: ctxt->input->end =
3530: &ctxt->input->base[ctxt->input->buf->buffer->use];
3531: }
3532: }
3533: }
3534:
3535: /**
3536: * htmlCheckMeta:
3537: * @ctxt: an HTML parser context
3538: * @atts: the attributes values
3539: *
3540: * Checks an attributes from a Meta tag
3541: */
3542: static void
3543: htmlCheckMeta(htmlParserCtxtPtr ctxt, const xmlChar **atts) {
3544: int i;
3545: const xmlChar *att, *value;
3546: int http = 0;
3547: const xmlChar *content = NULL;
3548:
3549: if ((ctxt == NULL) || (atts == NULL))
3550: return;
3551:
3552: i = 0;
3553: att = atts[i++];
3554: while (att != NULL) {
3555: value = atts[i++];
3556: if ((value != NULL) && (!xmlStrcasecmp(att, BAD_CAST"http-equiv"))
3557: && (!xmlStrcasecmp(value, BAD_CAST"Content-Type")))
3558: http = 1;
3559: else if ((value != NULL) && (!xmlStrcasecmp(att, BAD_CAST"content")))
3560: content = value;
3561: att = atts[i++];
3562: }
3563: if ((http) && (content != NULL))
3564: htmlCheckEncoding(ctxt, content);
3565:
3566: }
3567:
3568: /**
3569: * htmlParseStartTag:
3570: * @ctxt: an HTML parser context
3571: *
3572: * parse a start of tag either for rule element or
3573: * EmptyElement. In both case we don't parse the tag closing chars.
3574: *
3575: * [40] STag ::= '<' Name (S Attribute)* S? '>'
3576: *
3577: * [44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>'
3578: *
3579: * With namespace:
3580: *
3581: * [NS 8] STag ::= '<' QName (S Attribute)* S? '>'
3582: *
3583: * [NS 10] EmptyElement ::= '<' QName (S Attribute)* S? '/>'
3584: *
3585: * Returns 0 in case of success, -1 in case of error and 1 if discarded
3586: */
3587:
3588: static int
3589: htmlParseStartTag(htmlParserCtxtPtr ctxt) {
3590: const xmlChar *name;
3591: const xmlChar *attname;
3592: xmlChar *attvalue;
3593: const xmlChar **atts;
3594: int nbatts = 0;
3595: int maxatts;
3596: int meta = 0;
3597: int i;
3598: int discardtag = 0;
3599:
3600: if (ctxt->instate == XML_PARSER_EOF)
3601: return(-1);
3602: if ((ctxt == NULL) || (ctxt->input == NULL)) {
3603: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
3604: "htmlParseStartTag: context error\n", NULL, NULL);
3605: return -1;
3606: }
3607: if (CUR != '<') return -1;
3608: NEXT;
3609:
3610: atts = ctxt->atts;
3611: maxatts = ctxt->maxatts;
3612:
3613: GROW;
3614: name = htmlParseHTMLName(ctxt);
3615: if (name == NULL) {
3616: htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
3617: "htmlParseStartTag: invalid element name\n",
3618: NULL, NULL);
3619: /* Dump the bogus tag like browsers do */
3620: while ((IS_CHAR_CH(CUR)) && (CUR != '>') &&
3621: (ctxt->instate != XML_PARSER_EOF))
3622: NEXT;
3623: return -1;
3624: }
3625: if (xmlStrEqual(name, BAD_CAST"meta"))
3626: meta = 1;
3627:
3628: /*
3629: * Check for auto-closure of HTML elements.
3630: */
3631: htmlAutoClose(ctxt, name);
3632:
3633: /*
3634: * Check for implied HTML elements.
3635: */
3636: htmlCheckImplied(ctxt, name);
3637:
3638: /*
3639: * Avoid html at any level > 0, head at any level != 1
3640: * or any attempt to recurse body
3641: */
3642: if ((ctxt->nameNr > 0) && (xmlStrEqual(name, BAD_CAST"html"))) {
3643: htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
3644: "htmlParseStartTag: misplaced <html> tag\n",
3645: name, NULL);
3646: discardtag = 1;
3647: ctxt->depth++;
3648: }
3649: if ((ctxt->nameNr != 1) &&
3650: (xmlStrEqual(name, BAD_CAST"head"))) {
3651: htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
3652: "htmlParseStartTag: misplaced <head> tag\n",
3653: name, NULL);
3654: discardtag = 1;
3655: ctxt->depth++;
3656: }
3657: if (xmlStrEqual(name, BAD_CAST"body")) {
3658: int indx;
3659: for (indx = 0;indx < ctxt->nameNr;indx++) {
3660: if (xmlStrEqual(ctxt->nameTab[indx], BAD_CAST"body")) {
3661: htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
3662: "htmlParseStartTag: misplaced <body> tag\n",
3663: name, NULL);
3664: discardtag = 1;
3665: ctxt->depth++;
3666: }
3667: }
3668: }
3669:
3670: /*
3671: * Now parse the attributes, it ends up with the ending
3672: *
3673: * (S Attribute)* S?
3674: */
3675: SKIP_BLANKS;
3676: while ((IS_CHAR_CH(CUR)) &&
3677: (CUR != '>') &&
3678: ((CUR != '/') || (NXT(1) != '>'))) {
3679: long cons = ctxt->nbChars;
3680:
3681: GROW;
3682: attname = htmlParseAttribute(ctxt, &attvalue);
3683: if (attname != NULL) {
3684:
3685: /*
3686: * Well formedness requires at most one declaration of an attribute
3687: */
3688: for (i = 0; i < nbatts;i += 2) {
3689: if (xmlStrEqual(atts[i], attname)) {
3690: htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_REDEFINED,
3691: "Attribute %s redefined\n", attname, NULL);
3692: if (attvalue != NULL)
3693: xmlFree(attvalue);
3694: goto failed;
3695: }
3696: }
3697:
3698: /*
3699: * Add the pair to atts
3700: */
3701: if (atts == NULL) {
3702: maxatts = 22; /* allow for 10 attrs by default */
3703: atts = (const xmlChar **)
3704: xmlMalloc(maxatts * sizeof(xmlChar *));
3705: if (atts == NULL) {
3706: htmlErrMemory(ctxt, NULL);
3707: if (attvalue != NULL)
3708: xmlFree(attvalue);
3709: goto failed;
3710: }
3711: ctxt->atts = atts;
3712: ctxt->maxatts = maxatts;
3713: } else if (nbatts + 4 > maxatts) {
3714: const xmlChar **n;
3715:
3716: maxatts *= 2;
3717: n = (const xmlChar **) xmlRealloc((void *) atts,
3718: maxatts * sizeof(const xmlChar *));
3719: if (n == NULL) {
3720: htmlErrMemory(ctxt, NULL);
3721: if (attvalue != NULL)
3722: xmlFree(attvalue);
3723: goto failed;
3724: }
3725: atts = n;
3726: ctxt->atts = atts;
3727: ctxt->maxatts = maxatts;
3728: }
3729: atts[nbatts++] = attname;
3730: atts[nbatts++] = attvalue;
3731: atts[nbatts] = NULL;
3732: atts[nbatts + 1] = NULL;
3733: }
3734: else {
3735: if (attvalue != NULL)
3736: xmlFree(attvalue);
3737: /* Dump the bogus attribute string up to the next blank or
3738: * the end of the tag. */
3739: while ((IS_CHAR_CH(CUR)) &&
3740: !(IS_BLANK_CH(CUR)) && (CUR != '>') &&
3741: ((CUR != '/') || (NXT(1) != '>')))
3742: NEXT;
3743: }
3744:
3745: failed:
3746: SKIP_BLANKS;
3747: if (cons == ctxt->nbChars) {
3748: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
3749: "htmlParseStartTag: problem parsing attributes\n",
3750: NULL, NULL);
3751: break;
3752: }
3753: }
3754:
3755: /*
3756: * Handle specific association to the META tag
3757: */
3758: if (meta && (nbatts != 0))
3759: htmlCheckMeta(ctxt, atts);
3760:
3761: /*
3762: * SAX: Start of Element !
3763: */
3764: if (!discardtag) {
3765: htmlnamePush(ctxt, name);
3766: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL)) {
3767: if (nbatts != 0)
3768: ctxt->sax->startElement(ctxt->userData, name, atts);
3769: else
3770: ctxt->sax->startElement(ctxt->userData, name, NULL);
3771: }
3772: }
3773:
3774: if (atts != NULL) {
3775: for (i = 1;i < nbatts;i += 2) {
3776: if (atts[i] != NULL)
3777: xmlFree((xmlChar *) atts[i]);
3778: }
3779: }
3780:
3781: return(discardtag);
3782: }
3783:
3784: /**
3785: * htmlParseEndTag:
3786: * @ctxt: an HTML parser context
3787: *
3788: * parse an end of tag
3789: *
3790: * [42] ETag ::= '</' Name S? '>'
3791: *
3792: * With namespace
3793: *
3794: * [NS 9] ETag ::= '</' QName S? '>'
3795: *
3796: * Returns 1 if the current level should be closed.
3797: */
3798:
3799: static int
3800: htmlParseEndTag(htmlParserCtxtPtr ctxt)
3801: {
3802: const xmlChar *name;
3803: const xmlChar *oldname;
3804: int i, ret;
3805:
3806: if ((CUR != '<') || (NXT(1) != '/')) {
3807: htmlParseErr(ctxt, XML_ERR_LTSLASH_REQUIRED,
3808: "htmlParseEndTag: '</' not found\n", NULL, NULL);
3809: return (0);
3810: }
3811: SKIP(2);
3812:
3813: name = htmlParseHTMLName(ctxt);
3814: if (name == NULL)
3815: return (0);
3816: /*
3817: * We should definitely be at the ending "S? '>'" part
3818: */
3819: SKIP_BLANKS;
3820: if ((!IS_CHAR_CH(CUR)) || (CUR != '>')) {
3821: htmlParseErr(ctxt, XML_ERR_GT_REQUIRED,
3822: "End tag : expected '>'\n", NULL, NULL);
3823: if (ctxt->recovery) {
3824: /*
3825: * We're not at the ending > !!
3826: * Error, unless in recover mode where we search forwards
3827: * until we find a >
3828: */
3829: while (CUR != '\0' && CUR != '>') NEXT;
3830: NEXT;
3831: }
3832: } else
3833: NEXT;
3834:
3835: /*
3836: * if we ignored misplaced tags in htmlParseStartTag don't pop them
3837: * out now.
3838: */
3839: if ((ctxt->depth > 0) &&
3840: (xmlStrEqual(name, BAD_CAST "html") ||
3841: xmlStrEqual(name, BAD_CAST "body") ||
3842: xmlStrEqual(name, BAD_CAST "head"))) {
3843: ctxt->depth--;
3844: return (0);
3845: }
3846:
3847: /*
3848: * If the name read is not one of the element in the parsing stack
3849: * then return, it's just an error.
3850: */
3851: for (i = (ctxt->nameNr - 1); i >= 0; i--) {
3852: if (xmlStrEqual(name, ctxt->nameTab[i]))
3853: break;
3854: }
3855: if (i < 0) {
3856: htmlParseErr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
3857: "Unexpected end tag : %s\n", name, NULL);
3858: return (0);
3859: }
3860:
3861:
3862: /*
3863: * Check for auto-closure of HTML elements.
3864: */
3865:
3866: htmlAutoCloseOnClose(ctxt, name);
3867:
3868: /*
3869: * Well formedness constraints, opening and closing must match.
3870: * With the exception that the autoclose may have popped stuff out
3871: * of the stack.
3872: */
3873: if (!xmlStrEqual(name, ctxt->name)) {
3874: if ((ctxt->name != NULL) && (!xmlStrEqual(ctxt->name, name))) {
3875: htmlParseErr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
3876: "Opening and ending tag mismatch: %s and %s\n",
3877: name, ctxt->name);
3878: }
3879: }
3880:
3881: /*
3882: * SAX: End of Tag
3883: */
3884: oldname = ctxt->name;
3885: if ((oldname != NULL) && (xmlStrEqual(oldname, name))) {
3886: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
3887: ctxt->sax->endElement(ctxt->userData, name);
3888: htmlnamePop(ctxt);
3889: ret = 1;
3890: } else {
3891: ret = 0;
3892: }
3893:
3894: return (ret);
3895: }
3896:
3897:
3898: /**
3899: * htmlParseReference:
3900: * @ctxt: an HTML parser context
3901: *
3902: * parse and handle entity references in content,
3903: * this will end-up in a call to character() since this is either a
3904: * CharRef, or a predefined entity.
3905: */
3906: static void
3907: htmlParseReference(htmlParserCtxtPtr ctxt) {
3908: const htmlEntityDesc * ent;
3909: xmlChar out[6];
3910: const xmlChar *name;
3911: if (CUR != '&') return;
3912:
3913: if (NXT(1) == '#') {
3914: unsigned int c;
3915: int bits, i = 0;
3916:
3917: c = htmlParseCharRef(ctxt);
3918: if (c == 0)
3919: return;
3920:
3921: if (c < 0x80) { out[i++]= c; bits= -6; }
3922: else if (c < 0x800) { out[i++]=((c >> 6) & 0x1F) | 0xC0; bits= 0; }
3923: else if (c < 0x10000) { out[i++]=((c >> 12) & 0x0F) | 0xE0; bits= 6; }
3924: else { out[i++]=((c >> 18) & 0x07) | 0xF0; bits= 12; }
3925:
3926: for ( ; bits >= 0; bits-= 6) {
3927: out[i++]= ((c >> bits) & 0x3F) | 0x80;
3928: }
3929: out[i] = 0;
3930:
3931: htmlCheckParagraph(ctxt);
3932: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
3933: ctxt->sax->characters(ctxt->userData, out, i);
3934: } else {
3935: ent = htmlParseEntityRef(ctxt, &name);
3936: if (name == NULL) {
3937: htmlCheckParagraph(ctxt);
3938: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
3939: ctxt->sax->characters(ctxt->userData, BAD_CAST "&", 1);
3940: return;
3941: }
3942: if ((ent == NULL) || !(ent->value > 0)) {
3943: htmlCheckParagraph(ctxt);
3944: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL)) {
3945: ctxt->sax->characters(ctxt->userData, BAD_CAST "&", 1);
3946: ctxt->sax->characters(ctxt->userData, name, xmlStrlen(name));
3947: /* ctxt->sax->characters(ctxt->userData, BAD_CAST ";", 1); */
3948: }
3949: } else {
3950: unsigned int c;
3951: int bits, i = 0;
3952:
3953: c = ent->value;
3954: if (c < 0x80)
3955: { out[i++]= c; bits= -6; }
3956: else if (c < 0x800)
3957: { out[i++]=((c >> 6) & 0x1F) | 0xC0; bits= 0; }
3958: else if (c < 0x10000)
3959: { out[i++]=((c >> 12) & 0x0F) | 0xE0; bits= 6; }
3960: else
3961: { out[i++]=((c >> 18) & 0x07) | 0xF0; bits= 12; }
3962:
3963: for ( ; bits >= 0; bits-= 6) {
3964: out[i++]= ((c >> bits) & 0x3F) | 0x80;
3965: }
3966: out[i] = 0;
3967:
3968: htmlCheckParagraph(ctxt);
3969: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
3970: ctxt->sax->characters(ctxt->userData, out, i);
3971: }
3972: }
3973: }
3974:
3975: /**
3976: * htmlParseContent:
3977: * @ctxt: an HTML parser context
3978: *
3979: * Parse a content: comment, sub-element, reference or text.
3980: * Kept for compatibility with old code
3981: */
3982:
3983: static void
3984: htmlParseContent(htmlParserCtxtPtr ctxt) {
3985: xmlChar *currentNode;
3986: int depth;
3987: const xmlChar *name;
3988:
3989: currentNode = xmlStrdup(ctxt->name);
3990: depth = ctxt->nameNr;
3991: while (1) {
3992: long cons = ctxt->nbChars;
3993:
3994: GROW;
3995:
3996: if (ctxt->instate == XML_PARSER_EOF)
3997: break;
3998:
3999: /*
4000: * Our tag or one of it's parent or children is ending.
4001: */
4002: if ((CUR == '<') && (NXT(1) == '/')) {
4003: if (htmlParseEndTag(ctxt) &&
4004: ((currentNode != NULL) || (ctxt->nameNr == 0))) {
4005: if (currentNode != NULL)
4006: xmlFree(currentNode);
4007: return;
4008: }
4009: continue; /* while */
4010: }
4011:
4012: else if ((CUR == '<') &&
4013: ((IS_ASCII_LETTER(NXT(1))) ||
4014: (NXT(1) == '_') || (NXT(1) == ':'))) {
4015: name = htmlParseHTMLName_nonInvasive(ctxt);
4016: if (name == NULL) {
4017: htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
4018: "htmlParseStartTag: invalid element name\n",
4019: NULL, NULL);
4020: /* Dump the bogus tag like browsers do */
4021: while ((IS_CHAR_CH(CUR)) && (CUR != '>'))
4022: NEXT;
4023:
4024: if (currentNode != NULL)
4025: xmlFree(currentNode);
4026: return;
4027: }
4028:
4029: if (ctxt->name != NULL) {
4030: if (htmlCheckAutoClose(name, ctxt->name) == 1) {
4031: htmlAutoClose(ctxt, name);
4032: continue;
4033: }
4034: }
4035: }
4036:
4037: /*
4038: * Has this node been popped out during parsing of
4039: * the next element
4040: */
4041: if ((ctxt->nameNr > 0) && (depth >= ctxt->nameNr) &&
4042: (!xmlStrEqual(currentNode, ctxt->name)))
4043: {
4044: if (currentNode != NULL) xmlFree(currentNode);
4045: return;
4046: }
4047:
4048: if ((CUR != 0) && ((xmlStrEqual(currentNode, BAD_CAST"script")) ||
4049: (xmlStrEqual(currentNode, BAD_CAST"style")))) {
4050: /*
4051: * Handle SCRIPT/STYLE separately
4052: */
4053: htmlParseScript(ctxt);
4054: } else {
4055: /*
4056: * Sometimes DOCTYPE arrives in the middle of the document
4057: */
4058: if ((CUR == '<') && (NXT(1) == '!') &&
4059: (UPP(2) == 'D') && (UPP(3) == 'O') &&
4060: (UPP(4) == 'C') && (UPP(5) == 'T') &&
4061: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
4062: (UPP(8) == 'E')) {
4063: htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
4064: "Misplaced DOCTYPE declaration\n",
4065: BAD_CAST "DOCTYPE" , NULL);
4066: htmlParseDocTypeDecl(ctxt);
4067: }
4068:
4069: /*
4070: * First case : a comment
4071: */
4072: if ((CUR == '<') && (NXT(1) == '!') &&
4073: (NXT(2) == '-') && (NXT(3) == '-')) {
4074: htmlParseComment(ctxt);
4075: }
4076:
4077: /*
4078: * Second case : a Processing Instruction.
4079: */
4080: else if ((CUR == '<') && (NXT(1) == '?')) {
4081: htmlParsePI(ctxt);
4082: }
4083:
4084: /*
4085: * Third case : a sub-element.
4086: */
4087: else if (CUR == '<') {
4088: htmlParseElement(ctxt);
4089: }
4090:
4091: /*
4092: * Fourth case : a reference. If if has not been resolved,
4093: * parsing returns it's Name, create the node
4094: */
4095: else if (CUR == '&') {
4096: htmlParseReference(ctxt);
4097: }
4098:
4099: /*
4100: * Fifth case : end of the resource
4101: */
4102: else if (CUR == 0) {
4103: htmlAutoCloseOnEnd(ctxt);
4104: break;
4105: }
4106:
4107: /*
4108: * Last case, text. Note that References are handled directly.
4109: */
4110: else {
4111: htmlParseCharData(ctxt);
4112: }
4113:
4114: if (cons == ctxt->nbChars) {
4115: if (ctxt->node != NULL) {
4116: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
4117: "detected an error in element content\n",
4118: NULL, NULL);
4119: }
4120: break;
4121: }
4122: }
4123: GROW;
4124: }
4125: if (currentNode != NULL) xmlFree(currentNode);
4126: }
4127:
4128: /**
4129: * htmlParseElement:
4130: * @ctxt: an HTML parser context
4131: *
4132: * parse an HTML element, this is highly recursive
4133: * this is kept for compatibility with previous code versions
4134: *
4135: * [39] element ::= EmptyElemTag | STag content ETag
4136: *
4137: * [41] Attribute ::= Name Eq AttValue
4138: */
4139:
4140: void
4141: htmlParseElement(htmlParserCtxtPtr ctxt) {
4142: const xmlChar *name;
4143: xmlChar *currentNode = NULL;
4144: const htmlElemDesc * info;
4145: htmlParserNodeInfo node_info;
4146: int failed;
4147: int depth;
4148: const xmlChar *oldptr;
4149:
4150: if ((ctxt == NULL) || (ctxt->input == NULL)) {
4151: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
4152: "htmlParseElement: context error\n", NULL, NULL);
4153: return;
4154: }
4155:
4156: if (ctxt->instate == XML_PARSER_EOF)
4157: return;
4158:
4159: /* Capture start position */
4160: if (ctxt->record_info) {
4161: node_info.begin_pos = ctxt->input->consumed +
4162: (CUR_PTR - ctxt->input->base);
4163: node_info.begin_line = ctxt->input->line;
4164: }
4165:
4166: failed = htmlParseStartTag(ctxt);
4167: name = ctxt->name;
4168: if ((failed == -1) || (name == NULL)) {
4169: if (CUR == '>')
4170: NEXT;
4171: return;
4172: }
4173:
4174: /*
4175: * Lookup the info for that element.
4176: */
4177: info = htmlTagLookup(name);
4178: if (info == NULL) {
4179: htmlParseErr(ctxt, XML_HTML_UNKNOWN_TAG,
4180: "Tag %s invalid\n", name, NULL);
4181: }
4182:
4183: /*
4184: * Check for an Empty Element labeled the XML/SGML way
4185: */
4186: if ((CUR == '/') && (NXT(1) == '>')) {
4187: SKIP(2);
4188: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
4189: ctxt->sax->endElement(ctxt->userData, name);
4190: htmlnamePop(ctxt);
4191: return;
4192: }
4193:
4194: if (CUR == '>') {
4195: NEXT;
4196: } else {
4197: htmlParseErr(ctxt, XML_ERR_GT_REQUIRED,
4198: "Couldn't find end of Start Tag %s\n", name, NULL);
4199:
4200: /*
4201: * end of parsing of this node.
4202: */
4203: if (xmlStrEqual(name, ctxt->name)) {
4204: nodePop(ctxt);
4205: htmlnamePop(ctxt);
4206: }
4207:
4208: /*
4209: * Capture end position and add node
4210: */
4211: if (ctxt->record_info) {
4212: node_info.end_pos = ctxt->input->consumed +
4213: (CUR_PTR - ctxt->input->base);
4214: node_info.end_line = ctxt->input->line;
4215: node_info.node = ctxt->node;
4216: xmlParserAddNodeInfo(ctxt, &node_info);
4217: }
4218: return;
4219: }
4220:
4221: /*
4222: * Check for an Empty Element from DTD definition
4223: */
4224: if ((info != NULL) && (info->empty)) {
4225: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
4226: ctxt->sax->endElement(ctxt->userData, name);
4227: htmlnamePop(ctxt);
4228: return;
4229: }
4230:
4231: /*
4232: * Parse the content of the element:
4233: */
4234: currentNode = xmlStrdup(ctxt->name);
4235: depth = ctxt->nameNr;
4236: while (IS_CHAR_CH(CUR)) {
4237: oldptr = ctxt->input->cur;
4238: htmlParseContent(ctxt);
4239: if (oldptr==ctxt->input->cur) break;
4240: if (ctxt->nameNr < depth) break;
4241: }
4242:
4243: /*
4244: * Capture end position and add node
4245: */
4246: if ( currentNode != NULL && ctxt->record_info ) {
4247: node_info.end_pos = ctxt->input->consumed +
4248: (CUR_PTR - ctxt->input->base);
4249: node_info.end_line = ctxt->input->line;
4250: node_info.node = ctxt->node;
4251: xmlParserAddNodeInfo(ctxt, &node_info);
4252: }
4253: if (!IS_CHAR_CH(CUR)) {
4254: htmlAutoCloseOnEnd(ctxt);
4255: }
4256:
4257: if (currentNode != NULL)
4258: xmlFree(currentNode);
4259: }
4260:
4261: static void
4262: htmlParserFinishElementParsing(htmlParserCtxtPtr ctxt) {
4263: /*
4264: * Capture end position and add node
4265: */
4266: if ( ctxt->node != NULL && ctxt->record_info ) {
4267: ctxt->nodeInfo->end_pos = ctxt->input->consumed +
4268: (CUR_PTR - ctxt->input->base);
4269: ctxt->nodeInfo->end_line = ctxt->input->line;
4270: ctxt->nodeInfo->node = ctxt->node;
4271: xmlParserAddNodeInfo(ctxt, ctxt->nodeInfo);
4272: htmlNodeInfoPop(ctxt);
4273: }
4274: if (!IS_CHAR_CH(CUR)) {
4275: htmlAutoCloseOnEnd(ctxt);
4276: }
4277: }
4278:
4279: /**
4280: * htmlParseElementInternal:
4281: * @ctxt: an HTML parser context
4282: *
4283: * parse an HTML element, new version, non recursive
4284: *
4285: * [39] element ::= EmptyElemTag | STag content ETag
4286: *
4287: * [41] Attribute ::= Name Eq AttValue
4288: */
4289:
4290: static void
4291: htmlParseElementInternal(htmlParserCtxtPtr ctxt) {
4292: const xmlChar *name;
4293: const htmlElemDesc * info;
4294: htmlParserNodeInfo node_info;
4295: int failed;
4296:
4297: if ((ctxt == NULL) || (ctxt->input == NULL)) {
4298: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
4299: "htmlParseElementInternal: context error\n", NULL, NULL);
4300: return;
4301: }
4302:
4303: if (ctxt->instate == XML_PARSER_EOF)
4304: return;
4305:
4306: /* Capture start position */
4307: if (ctxt->record_info) {
4308: node_info.begin_pos = ctxt->input->consumed +
4309: (CUR_PTR - ctxt->input->base);
4310: node_info.begin_line = ctxt->input->line;
4311: }
4312:
4313: failed = htmlParseStartTag(ctxt);
4314: name = ctxt->name;
4315: if ((failed == -1) || (name == NULL)) {
4316: if (CUR == '>')
4317: NEXT;
4318: return;
4319: }
4320:
4321: /*
4322: * Lookup the info for that element.
4323: */
4324: info = htmlTagLookup(name);
4325: if (info == NULL) {
4326: htmlParseErr(ctxt, XML_HTML_UNKNOWN_TAG,
4327: "Tag %s invalid\n", name, NULL);
4328: }
4329:
4330: /*
4331: * Check for an Empty Element labeled the XML/SGML way
4332: */
4333: if ((CUR == '/') && (NXT(1) == '>')) {
4334: SKIP(2);
4335: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
4336: ctxt->sax->endElement(ctxt->userData, name);
4337: htmlnamePop(ctxt);
4338: return;
4339: }
4340:
4341: if (CUR == '>') {
4342: NEXT;
4343: } else {
4344: htmlParseErr(ctxt, XML_ERR_GT_REQUIRED,
4345: "Couldn't find end of Start Tag %s\n", name, NULL);
4346:
4347: /*
4348: * end of parsing of this node.
4349: */
4350: if (xmlStrEqual(name, ctxt->name)) {
4351: nodePop(ctxt);
4352: htmlnamePop(ctxt);
4353: }
4354:
4355: if (ctxt->record_info)
4356: htmlNodeInfoPush(ctxt, &node_info);
4357: htmlParserFinishElementParsing(ctxt);
4358: return;
4359: }
4360:
4361: /*
4362: * Check for an Empty Element from DTD definition
4363: */
4364: if ((info != NULL) && (info->empty)) {
4365: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
4366: ctxt->sax->endElement(ctxt->userData, name);
4367: htmlnamePop(ctxt);
4368: return;
4369: }
4370:
4371: if (ctxt->record_info)
4372: htmlNodeInfoPush(ctxt, &node_info);
4373: }
4374:
4375: /**
4376: * htmlParseContentInternal:
4377: * @ctxt: an HTML parser context
4378: *
4379: * Parse a content: comment, sub-element, reference or text.
4380: * New version for non recursive htmlParseElementInternal
4381: */
4382:
4383: static void
4384: htmlParseContentInternal(htmlParserCtxtPtr ctxt) {
4385: xmlChar *currentNode;
4386: int depth;
4387: const xmlChar *name;
4388:
4389: currentNode = xmlStrdup(ctxt->name);
4390: depth = ctxt->nameNr;
4391: while (1) {
4392: long cons = ctxt->nbChars;
4393:
4394: GROW;
4395:
4396: if (ctxt->instate == XML_PARSER_EOF)
4397: break;
4398:
4399: /*
4400: * Our tag or one of it's parent or children is ending.
4401: */
4402: if ((CUR == '<') && (NXT(1) == '/')) {
4403: if (htmlParseEndTag(ctxt) &&
4404: ((currentNode != NULL) || (ctxt->nameNr == 0))) {
4405: if (currentNode != NULL)
4406: xmlFree(currentNode);
4407:
4408: currentNode = xmlStrdup(ctxt->name);
4409: depth = ctxt->nameNr;
4410: }
4411: continue; /* while */
4412: }
4413:
4414: else if ((CUR == '<') &&
4415: ((IS_ASCII_LETTER(NXT(1))) ||
4416: (NXT(1) == '_') || (NXT(1) == ':'))) {
4417: name = htmlParseHTMLName_nonInvasive(ctxt);
4418: if (name == NULL) {
4419: htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
4420: "htmlParseStartTag: invalid element name\n",
4421: NULL, NULL);
4422: /* Dump the bogus tag like browsers do */
4423: while ((IS_CHAR_CH(CUR)) && (CUR != '>'))
4424: NEXT;
4425:
4426: htmlParserFinishElementParsing(ctxt);
4427: if (currentNode != NULL)
4428: xmlFree(currentNode);
4429:
4430: currentNode = xmlStrdup(ctxt->name);
4431: depth = ctxt->nameNr;
4432: continue;
4433: }
4434:
4435: if (ctxt->name != NULL) {
4436: if (htmlCheckAutoClose(name, ctxt->name) == 1) {
4437: htmlAutoClose(ctxt, name);
4438: continue;
4439: }
4440: }
4441: }
4442:
4443: /*
4444: * Has this node been popped out during parsing of
4445: * the next element
4446: */
4447: if ((ctxt->nameNr > 0) && (depth >= ctxt->nameNr) &&
4448: (!xmlStrEqual(currentNode, ctxt->name)))
4449: {
4450: htmlParserFinishElementParsing(ctxt);
4451: if (currentNode != NULL) xmlFree(currentNode);
4452:
4453: currentNode = xmlStrdup(ctxt->name);
4454: depth = ctxt->nameNr;
4455: continue;
4456: }
4457:
4458: if ((CUR != 0) && ((xmlStrEqual(currentNode, BAD_CAST"script")) ||
4459: (xmlStrEqual(currentNode, BAD_CAST"style")))) {
4460: /*
4461: * Handle SCRIPT/STYLE separately
4462: */
4463: htmlParseScript(ctxt);
4464: } else {
4465: /*
4466: * Sometimes DOCTYPE arrives in the middle of the document
4467: */
4468: if ((CUR == '<') && (NXT(1) == '!') &&
4469: (UPP(2) == 'D') && (UPP(3) == 'O') &&
4470: (UPP(4) == 'C') && (UPP(5) == 'T') &&
4471: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
4472: (UPP(8) == 'E')) {
4473: htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
4474: "Misplaced DOCTYPE declaration\n",
4475: BAD_CAST "DOCTYPE" , NULL);
4476: htmlParseDocTypeDecl(ctxt);
4477: }
4478:
4479: /*
4480: * First case : a comment
4481: */
4482: if ((CUR == '<') && (NXT(1) == '!') &&
4483: (NXT(2) == '-') && (NXT(3) == '-')) {
4484: htmlParseComment(ctxt);
4485: }
4486:
4487: /*
4488: * Second case : a Processing Instruction.
4489: */
4490: else if ((CUR == '<') && (NXT(1) == '?')) {
4491: htmlParsePI(ctxt);
4492: }
4493:
4494: /*
4495: * Third case : a sub-element.
4496: */
4497: else if (CUR == '<') {
4498: htmlParseElementInternal(ctxt);
4499: if (currentNode != NULL) xmlFree(currentNode);
4500:
4501: currentNode = xmlStrdup(ctxt->name);
4502: depth = ctxt->nameNr;
4503: }
4504:
4505: /*
4506: * Fourth case : a reference. If if has not been resolved,
4507: * parsing returns it's Name, create the node
4508: */
4509: else if (CUR == '&') {
4510: htmlParseReference(ctxt);
4511: }
4512:
4513: /*
4514: * Fifth case : end of the resource
4515: */
4516: else if (CUR == 0) {
4517: htmlAutoCloseOnEnd(ctxt);
4518: break;
4519: }
4520:
4521: /*
4522: * Last case, text. Note that References are handled directly.
4523: */
4524: else {
4525: htmlParseCharData(ctxt);
4526: }
4527:
4528: if (cons == ctxt->nbChars) {
4529: if (ctxt->node != NULL) {
4530: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
4531: "detected an error in element content\n",
4532: NULL, NULL);
4533: }
4534: break;
4535: }
4536: }
4537: GROW;
4538: }
4539: if (currentNode != NULL) xmlFree(currentNode);
4540: }
4541:
4542: /**
4543: * htmlParseContent:
4544: * @ctxt: an HTML parser context
4545: *
4546: * Parse a content: comment, sub-element, reference or text.
4547: * This is the entry point when called from parser.c
4548: */
4549:
4550: void
4551: __htmlParseContent(void *ctxt) {
4552: if (ctxt != NULL)
4553: htmlParseContentInternal((htmlParserCtxtPtr) ctxt);
4554: }
4555:
4556: /**
4557: * htmlParseDocument:
4558: * @ctxt: an HTML parser context
4559: *
4560: * parse an HTML document (and build a tree if using the standard SAX
4561: * interface).
4562: *
4563: * Returns 0, -1 in case of error. the parser context is augmented
4564: * as a result of the parsing.
4565: */
4566:
4567: int
4568: htmlParseDocument(htmlParserCtxtPtr ctxt) {
4569: xmlChar start[4];
4570: xmlCharEncoding enc;
4571: xmlDtdPtr dtd;
4572:
4573: xmlInitParser();
4574:
4575: htmlDefaultSAXHandlerInit();
4576:
4577: if ((ctxt == NULL) || (ctxt->input == NULL)) {
4578: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
4579: "htmlParseDocument: context error\n", NULL, NULL);
4580: return(XML_ERR_INTERNAL_ERROR);
4581: }
4582: ctxt->html = 1;
4583: ctxt->linenumbers = 1;
4584: GROW;
4585: /*
4586: * SAX: beginning of the document processing.
4587: */
4588: if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
4589: ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator);
4590:
4591: if ((ctxt->encoding == (const xmlChar *)XML_CHAR_ENCODING_NONE) &&
4592: ((ctxt->input->end - ctxt->input->cur) >= 4)) {
4593: /*
4594: * Get the 4 first bytes and decode the charset
4595: * if enc != XML_CHAR_ENCODING_NONE
4596: * plug some encoding conversion routines.
4597: */
4598: start[0] = RAW;
4599: start[1] = NXT(1);
4600: start[2] = NXT(2);
4601: start[3] = NXT(3);
4602: enc = xmlDetectCharEncoding(&start[0], 4);
4603: if (enc != XML_CHAR_ENCODING_NONE) {
4604: xmlSwitchEncoding(ctxt, enc);
4605: }
4606: }
4607:
4608: /*
4609: * Wipe out everything which is before the first '<'
4610: */
4611: SKIP_BLANKS;
4612: if (CUR == 0) {
4613: htmlParseErr(ctxt, XML_ERR_DOCUMENT_EMPTY,
4614: "Document is empty\n", NULL, NULL);
4615: }
4616:
4617: if ((ctxt->sax) && (ctxt->sax->startDocument) && (!ctxt->disableSAX))
4618: ctxt->sax->startDocument(ctxt->userData);
4619:
4620:
4621: /*
4622: * Parse possible comments and PIs before any content
4623: */
4624: while (((CUR == '<') && (NXT(1) == '!') &&
4625: (NXT(2) == '-') && (NXT(3) == '-')) ||
4626: ((CUR == '<') && (NXT(1) == '?'))) {
4627: htmlParseComment(ctxt);
4628: htmlParsePI(ctxt);
4629: SKIP_BLANKS;
4630: }
4631:
4632:
4633: /*
4634: * Then possibly doc type declaration(s) and more Misc
4635: * (doctypedecl Misc*)?
4636: */
4637: if ((CUR == '<') && (NXT(1) == '!') &&
4638: (UPP(2) == 'D') && (UPP(3) == 'O') &&
4639: (UPP(4) == 'C') && (UPP(5) == 'T') &&
4640: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
4641: (UPP(8) == 'E')) {
4642: htmlParseDocTypeDecl(ctxt);
4643: }
4644: SKIP_BLANKS;
4645:
4646: /*
4647: * Parse possible comments and PIs before any content
4648: */
4649: while (((CUR == '<') && (NXT(1) == '!') &&
4650: (NXT(2) == '-') && (NXT(3) == '-')) ||
4651: ((CUR == '<') && (NXT(1) == '?'))) {
4652: htmlParseComment(ctxt);
4653: htmlParsePI(ctxt);
4654: SKIP_BLANKS;
4655: }
4656:
4657: /*
4658: * Time to start parsing the tree itself
4659: */
4660: htmlParseContentInternal(ctxt);
4661:
4662: /*
4663: * autoclose
4664: */
4665: if (CUR == 0)
4666: htmlAutoCloseOnEnd(ctxt);
4667:
4668:
4669: /*
4670: * SAX: end of the document processing.
4671: */
4672: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
4673: ctxt->sax->endDocument(ctxt->userData);
4674:
4675: if ((!(ctxt->options & HTML_PARSE_NODEFDTD)) && (ctxt->myDoc != NULL)) {
4676: dtd = xmlGetIntSubset(ctxt->myDoc);
4677: if (dtd == NULL)
4678: ctxt->myDoc->intSubset =
4679: xmlCreateIntSubset(ctxt->myDoc, BAD_CAST "html",
4680: BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN",
4681: BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd");
4682: }
4683: if (! ctxt->wellFormed) return(-1);
4684: return(0);
4685: }
4686:
4687:
4688: /************************************************************************
4689: * *
4690: * Parser contexts handling *
4691: * *
4692: ************************************************************************/
4693:
4694: /**
4695: * htmlInitParserCtxt:
4696: * @ctxt: an HTML parser context
4697: *
4698: * Initialize a parser context
4699: *
4700: * Returns 0 in case of success and -1 in case of error
4701: */
4702:
4703: static int
4704: htmlInitParserCtxt(htmlParserCtxtPtr ctxt)
4705: {
4706: htmlSAXHandler *sax;
4707:
4708: if (ctxt == NULL) return(-1);
4709: memset(ctxt, 0, sizeof(htmlParserCtxt));
4710:
4711: ctxt->dict = xmlDictCreate();
4712: if (ctxt->dict == NULL) {
4713: htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
4714: return(-1);
4715: }
4716: sax = (htmlSAXHandler *) xmlMalloc(sizeof(htmlSAXHandler));
4717: if (sax == NULL) {
4718: htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
4719: return(-1);
4720: }
4721: else
4722: memset(sax, 0, sizeof(htmlSAXHandler));
4723:
4724: /* Allocate the Input stack */
4725: ctxt->inputTab = (htmlParserInputPtr *)
4726: xmlMalloc(5 * sizeof(htmlParserInputPtr));
4727: if (ctxt->inputTab == NULL) {
4728: htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
4729: ctxt->inputNr = 0;
4730: ctxt->inputMax = 0;
4731: ctxt->input = NULL;
4732: return(-1);
4733: }
4734: ctxt->inputNr = 0;
4735: ctxt->inputMax = 5;
4736: ctxt->input = NULL;
4737: ctxt->version = NULL;
4738: ctxt->encoding = NULL;
4739: ctxt->standalone = -1;
4740: ctxt->instate = XML_PARSER_START;
4741:
4742: /* Allocate the Node stack */
4743: ctxt->nodeTab = (htmlNodePtr *) xmlMalloc(10 * sizeof(htmlNodePtr));
4744: if (ctxt->nodeTab == NULL) {
4745: htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
4746: ctxt->nodeNr = 0;
4747: ctxt->nodeMax = 0;
4748: ctxt->node = NULL;
4749: ctxt->inputNr = 0;
4750: ctxt->inputMax = 0;
4751: ctxt->input = NULL;
4752: return(-1);
4753: }
4754: ctxt->nodeNr = 0;
4755: ctxt->nodeMax = 10;
4756: ctxt->node = NULL;
4757:
4758: /* Allocate the Name stack */
4759: ctxt->nameTab = (const xmlChar **) xmlMalloc(10 * sizeof(xmlChar *));
4760: if (ctxt->nameTab == NULL) {
4761: htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
4762: ctxt->nameNr = 0;
4763: ctxt->nameMax = 0;
4764: ctxt->name = NULL;
4765: ctxt->nodeNr = 0;
4766: ctxt->nodeMax = 0;
4767: ctxt->node = NULL;
4768: ctxt->inputNr = 0;
4769: ctxt->inputMax = 0;
4770: ctxt->input = NULL;
4771: return(-1);
4772: }
4773: ctxt->nameNr = 0;
4774: ctxt->nameMax = 10;
4775: ctxt->name = NULL;
4776:
4777: ctxt->nodeInfoTab = NULL;
4778: ctxt->nodeInfoNr = 0;
4779: ctxt->nodeInfoMax = 0;
4780:
4781: if (sax == NULL) ctxt->sax = (xmlSAXHandlerPtr) &htmlDefaultSAXHandler;
4782: else {
4783: ctxt->sax = sax;
4784: memcpy(sax, &htmlDefaultSAXHandler, sizeof(xmlSAXHandlerV1));
4785: }
4786: ctxt->userData = ctxt;
4787: ctxt->myDoc = NULL;
4788: ctxt->wellFormed = 1;
4789: ctxt->replaceEntities = 0;
4790: ctxt->linenumbers = xmlLineNumbersDefaultValue;
4791: ctxt->html = 1;
4792: ctxt->vctxt.finishDtd = XML_CTXT_FINISH_DTD_0;
4793: ctxt->vctxt.userData = ctxt;
4794: ctxt->vctxt.error = xmlParserValidityError;
4795: ctxt->vctxt.warning = xmlParserValidityWarning;
4796: ctxt->record_info = 0;
4797: ctxt->validate = 0;
4798: ctxt->nbChars = 0;
4799: ctxt->checkIndex = 0;
4800: ctxt->catalogs = NULL;
4801: xmlInitNodeInfoSeq(&ctxt->node_seq);
4802: return(0);
4803: }
4804:
4805: /**
4806: * htmlFreeParserCtxt:
4807: * @ctxt: an HTML parser context
4808: *
4809: * Free all the memory used by a parser context. However the parsed
4810: * document in ctxt->myDoc is not freed.
4811: */
4812:
4813: void
4814: htmlFreeParserCtxt(htmlParserCtxtPtr ctxt)
4815: {
4816: xmlFreeParserCtxt(ctxt);
4817: }
4818:
4819: /**
4820: * htmlNewParserCtxt:
4821: *
4822: * Allocate and initialize a new parser context.
4823: *
4824: * Returns the htmlParserCtxtPtr or NULL in case of allocation error
4825: */
4826:
4827: htmlParserCtxtPtr
4828: htmlNewParserCtxt(void)
4829: {
4830: xmlParserCtxtPtr ctxt;
4831:
4832: ctxt = (xmlParserCtxtPtr) xmlMalloc(sizeof(xmlParserCtxt));
4833: if (ctxt == NULL) {
4834: htmlErrMemory(NULL, "NewParserCtxt: out of memory\n");
4835: return(NULL);
4836: }
4837: memset(ctxt, 0, sizeof(xmlParserCtxt));
4838: if (htmlInitParserCtxt(ctxt) < 0) {
4839: htmlFreeParserCtxt(ctxt);
4840: return(NULL);
4841: }
4842: return(ctxt);
4843: }
4844:
4845: /**
4846: * htmlCreateMemoryParserCtxt:
4847: * @buffer: a pointer to a char array
4848: * @size: the size of the array
4849: *
4850: * Create a parser context for an HTML in-memory document.
4851: *
4852: * Returns the new parser context or NULL
4853: */
4854: htmlParserCtxtPtr
4855: htmlCreateMemoryParserCtxt(const char *buffer, int size) {
4856: xmlParserCtxtPtr ctxt;
4857: xmlParserInputPtr input;
4858: xmlParserInputBufferPtr buf;
4859:
4860: if (buffer == NULL)
4861: return(NULL);
4862: if (size <= 0)
4863: return(NULL);
4864:
4865: ctxt = htmlNewParserCtxt();
4866: if (ctxt == NULL)
4867: return(NULL);
4868:
4869: buf = xmlParserInputBufferCreateMem(buffer, size, XML_CHAR_ENCODING_NONE);
4870: if (buf == NULL) return(NULL);
4871:
4872: input = xmlNewInputStream(ctxt);
4873: if (input == NULL) {
4874: xmlFreeParserCtxt(ctxt);
4875: return(NULL);
4876: }
4877:
4878: input->filename = NULL;
4879: input->buf = buf;
4880: input->base = input->buf->buffer->content;
4881: input->cur = input->buf->buffer->content;
4882: input->end = &input->buf->buffer->content[input->buf->buffer->use];
4883:
4884: inputPush(ctxt, input);
4885: return(ctxt);
4886: }
4887:
4888: /**
4889: * htmlCreateDocParserCtxt:
4890: * @cur: a pointer to an array of xmlChar
4891: * @encoding: a free form C string describing the HTML document encoding, or NULL
4892: *
4893: * Create a parser context for an HTML document.
4894: *
4895: * TODO: check the need to add encoding handling there
4896: *
4897: * Returns the new parser context or NULL
4898: */
4899: static htmlParserCtxtPtr
4900: htmlCreateDocParserCtxt(const xmlChar *cur, const char *encoding) {
4901: int len;
4902: htmlParserCtxtPtr ctxt;
4903:
4904: if (cur == NULL)
4905: return(NULL);
4906: len = xmlStrlen(cur);
4907: ctxt = htmlCreateMemoryParserCtxt((char *)cur, len);
4908: if (ctxt == NULL)
4909: return(NULL);
4910:
4911: if (encoding != NULL) {
4912: xmlCharEncoding enc;
4913: xmlCharEncodingHandlerPtr handler;
4914:
4915: if (ctxt->input->encoding != NULL)
4916: xmlFree((xmlChar *) ctxt->input->encoding);
4917: ctxt->input->encoding = xmlStrdup((const xmlChar *) encoding);
4918:
4919: enc = xmlParseCharEncoding(encoding);
4920: /*
4921: * registered set of known encodings
4922: */
4923: if (enc != XML_CHAR_ENCODING_ERROR) {
4924: xmlSwitchEncoding(ctxt, enc);
4925: if (ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) {
4926: htmlParseErr(ctxt, XML_ERR_UNSUPPORTED_ENCODING,
4927: "Unsupported encoding %s\n",
4928: (const xmlChar *) encoding, NULL);
4929: }
4930: } else {
4931: /*
4932: * fallback for unknown encodings
4933: */
4934: handler = xmlFindCharEncodingHandler((const char *) encoding);
4935: if (handler != NULL) {
4936: xmlSwitchToEncoding(ctxt, handler);
4937: } else {
4938: htmlParseErr(ctxt, XML_ERR_UNSUPPORTED_ENCODING,
4939: "Unsupported encoding %s\n",
4940: (const xmlChar *) encoding, NULL);
4941: }
4942: }
4943: }
4944: return(ctxt);
4945: }
4946:
4947: #ifdef LIBXML_PUSH_ENABLED
4948: /************************************************************************
4949: * *
4950: * Progressive parsing interfaces *
4951: * *
4952: ************************************************************************/
4953:
4954: /**
4955: * htmlParseLookupSequence:
4956: * @ctxt: an HTML parser context
4957: * @first: the first char to lookup
4958: * @next: the next char to lookup or zero
4959: * @third: the next char to lookup or zero
4960: * @comment: flag to force checking inside comments
4961: *
4962: * Try to find if a sequence (first, next, third) or just (first next) or
4963: * (first) is available in the input stream.
4964: * This function has a side effect of (possibly) incrementing ctxt->checkIndex
4965: * to avoid rescanning sequences of bytes, it DOES change the state of the
4966: * parser, do not use liberally.
4967: * This is basically similar to xmlParseLookupSequence()
4968: *
4969: * Returns the index to the current parsing point if the full sequence
4970: * is available, -1 otherwise.
4971: */
4972: static int
4973: htmlParseLookupSequence(htmlParserCtxtPtr ctxt, xmlChar first,
4974: xmlChar next, xmlChar third, int iscomment,
4975: int ignoreattrval)
4976: {
4977: int base, len;
4978: htmlParserInputPtr in;
4979: const xmlChar *buf;
4980: int incomment = 0;
4981: int invalue = 0;
4982: char valdellim = 0x0;
4983:
4984: in = ctxt->input;
4985: if (in == NULL)
4986: return (-1);
4987:
4988: base = in->cur - in->base;
4989: if (base < 0)
4990: return (-1);
4991:
4992: if (ctxt->checkIndex > base)
4993: base = ctxt->checkIndex;
4994:
4995: if (in->buf == NULL) {
4996: buf = in->base;
4997: len = in->length;
4998: } else {
4999: buf = in->buf->buffer->content;
5000: len = in->buf->buffer->use;
5001: }
5002:
5003: /* take into account the sequence length */
5004: if (third)
5005: len -= 2;
5006: else if (next)
5007: len--;
5008: for (; base < len; base++) {
5009: if ((!incomment) && (base + 4 < len) && (!iscomment)) {
5010: if ((buf[base] == '<') && (buf[base + 1] == '!') &&
5011: (buf[base + 2] == '-') && (buf[base + 3] == '-')) {
5012: incomment = 1;
5013: /* do not increment past <! - some people use <!--> */
5014: base += 2;
5015: }
5016: }
5017: if (ignoreattrval) {
5018: if (buf[base] == '"' || buf[base] == '\'') {
5019: if (invalue) {
5020: if (buf[base] == valdellim) {
5021: invalue = 0;
5022: continue;
5023: }
5024: } else {
5025: valdellim = buf[base];
5026: invalue = 1;
5027: continue;
5028: }
5029: } else if (invalue) {
5030: continue;
5031: }
5032: }
5033: if (incomment) {
5034: if (base + 3 > len)
5035: return (-1);
5036: if ((buf[base] == '-') && (buf[base + 1] == '-') &&
5037: (buf[base + 2] == '>')) {
5038: incomment = 0;
5039: base += 2;
5040: }
5041: continue;
5042: }
5043: if (buf[base] == first) {
5044: if (third != 0) {
5045: if ((buf[base + 1] != next) || (buf[base + 2] != third))
5046: continue;
5047: } else if (next != 0) {
5048: if (buf[base + 1] != next)
5049: continue;
5050: }
5051: ctxt->checkIndex = 0;
5052: #ifdef DEBUG_PUSH
5053: if (next == 0)
5054: xmlGenericError(xmlGenericErrorContext,
5055: "HPP: lookup '%c' found at %d\n",
5056: first, base);
5057: else if (third == 0)
5058: xmlGenericError(xmlGenericErrorContext,
5059: "HPP: lookup '%c%c' found at %d\n",
5060: first, next, base);
5061: else
5062: xmlGenericError(xmlGenericErrorContext,
5063: "HPP: lookup '%c%c%c' found at %d\n",
5064: first, next, third, base);
5065: #endif
5066: return (base - (in->cur - in->base));
5067: }
5068: }
5069: if ((!incomment) && (!invalue))
5070: ctxt->checkIndex = base;
5071: #ifdef DEBUG_PUSH
5072: if (next == 0)
5073: xmlGenericError(xmlGenericErrorContext,
5074: "HPP: lookup '%c' failed\n", first);
5075: else if (third == 0)
5076: xmlGenericError(xmlGenericErrorContext,
5077: "HPP: lookup '%c%c' failed\n", first, next);
5078: else
5079: xmlGenericError(xmlGenericErrorContext,
5080: "HPP: lookup '%c%c%c' failed\n", first, next,
5081: third);
5082: #endif
5083: return (-1);
5084: }
5085:
5086: /**
5087: * htmlParseLookupChars:
5088: * @ctxt: an HTML parser context
5089: * @stop: Array of chars, which stop the lookup.
5090: * @stopLen: Length of stop-Array
5091: *
5092: * Try to find if any char of the stop-Array is available in the input
5093: * stream.
5094: * This function has a side effect of (possibly) incrementing ctxt->checkIndex
5095: * to avoid rescanning sequences of bytes, it DOES change the state of the
5096: * parser, do not use liberally.
5097: *
5098: * Returns the index to the current parsing point if a stopChar
5099: * is available, -1 otherwise.
5100: */
5101: static int
5102: htmlParseLookupChars(htmlParserCtxtPtr ctxt, const xmlChar * stop,
5103: int stopLen)
5104: {
5105: int base, len;
5106: htmlParserInputPtr in;
5107: const xmlChar *buf;
5108: int incomment = 0;
5109: int i;
5110:
5111: in = ctxt->input;
5112: if (in == NULL)
5113: return (-1);
5114:
5115: base = in->cur - in->base;
5116: if (base < 0)
5117: return (-1);
5118:
5119: if (ctxt->checkIndex > base)
5120: base = ctxt->checkIndex;
5121:
5122: if (in->buf == NULL) {
5123: buf = in->base;
5124: len = in->length;
5125: } else {
5126: buf = in->buf->buffer->content;
5127: len = in->buf->buffer->use;
5128: }
5129:
5130: for (; base < len; base++) {
5131: if (!incomment && (base + 4 < len)) {
5132: if ((buf[base] == '<') && (buf[base + 1] == '!') &&
5133: (buf[base + 2] == '-') && (buf[base + 3] == '-')) {
5134: incomment = 1;
5135: /* do not increment past <! - some people use <!--> */
5136: base += 2;
5137: }
5138: }
5139: if (incomment) {
5140: if (base + 3 > len)
5141: return (-1);
5142: if ((buf[base] == '-') && (buf[base + 1] == '-') &&
5143: (buf[base + 2] == '>')) {
5144: incomment = 0;
5145: base += 2;
5146: }
5147: continue;
5148: }
5149: for (i = 0; i < stopLen; ++i) {
5150: if (buf[base] == stop[i]) {
5151: ctxt->checkIndex = 0;
5152: return (base - (in->cur - in->base));
5153: }
5154: }
5155: }
5156: ctxt->checkIndex = base;
5157: return (-1);
5158: }
5159:
5160: /**
5161: * htmlParseTryOrFinish:
5162: * @ctxt: an HTML parser context
5163: * @terminate: last chunk indicator
5164: *
5165: * Try to progress on parsing
5166: *
5167: * Returns zero if no parsing was possible
5168: */
5169: static int
5170: htmlParseTryOrFinish(htmlParserCtxtPtr ctxt, int terminate) {
5171: int ret = 0;
5172: htmlParserInputPtr in;
5173: int avail = 0;
5174: xmlChar cur, next;
5175:
5176: #ifdef DEBUG_PUSH
5177: switch (ctxt->instate) {
5178: case XML_PARSER_EOF:
5179: xmlGenericError(xmlGenericErrorContext,
5180: "HPP: try EOF\n"); break;
5181: case XML_PARSER_START:
5182: xmlGenericError(xmlGenericErrorContext,
5183: "HPP: try START\n"); break;
5184: case XML_PARSER_MISC:
5185: xmlGenericError(xmlGenericErrorContext,
5186: "HPP: try MISC\n");break;
5187: case XML_PARSER_COMMENT:
5188: xmlGenericError(xmlGenericErrorContext,
5189: "HPP: try COMMENT\n");break;
5190: case XML_PARSER_PROLOG:
5191: xmlGenericError(xmlGenericErrorContext,
5192: "HPP: try PROLOG\n");break;
5193: case XML_PARSER_START_TAG:
5194: xmlGenericError(xmlGenericErrorContext,
5195: "HPP: try START_TAG\n");break;
5196: case XML_PARSER_CONTENT:
5197: xmlGenericError(xmlGenericErrorContext,
5198: "HPP: try CONTENT\n");break;
5199: case XML_PARSER_CDATA_SECTION:
5200: xmlGenericError(xmlGenericErrorContext,
5201: "HPP: try CDATA_SECTION\n");break;
5202: case XML_PARSER_END_TAG:
5203: xmlGenericError(xmlGenericErrorContext,
5204: "HPP: try END_TAG\n");break;
5205: case XML_PARSER_ENTITY_DECL:
5206: xmlGenericError(xmlGenericErrorContext,
5207: "HPP: try ENTITY_DECL\n");break;
5208: case XML_PARSER_ENTITY_VALUE:
5209: xmlGenericError(xmlGenericErrorContext,
5210: "HPP: try ENTITY_VALUE\n");break;
5211: case XML_PARSER_ATTRIBUTE_VALUE:
5212: xmlGenericError(xmlGenericErrorContext,
5213: "HPP: try ATTRIBUTE_VALUE\n");break;
5214: case XML_PARSER_DTD:
5215: xmlGenericError(xmlGenericErrorContext,
5216: "HPP: try DTD\n");break;
5217: case XML_PARSER_EPILOG:
5218: xmlGenericError(xmlGenericErrorContext,
5219: "HPP: try EPILOG\n");break;
5220: case XML_PARSER_PI:
5221: xmlGenericError(xmlGenericErrorContext,
5222: "HPP: try PI\n");break;
5223: case XML_PARSER_SYSTEM_LITERAL:
5224: xmlGenericError(xmlGenericErrorContext,
5225: "HPP: try SYSTEM_LITERAL\n");break;
5226: }
5227: #endif
5228:
5229: while (1) {
5230:
5231: in = ctxt->input;
5232: if (in == NULL) break;
5233: if (in->buf == NULL)
5234: avail = in->length - (in->cur - in->base);
5235: else
5236: avail = in->buf->buffer->use - (in->cur - in->base);
5237: if ((avail == 0) && (terminate)) {
5238: htmlAutoCloseOnEnd(ctxt);
5239: if ((ctxt->nameNr == 0) && (ctxt->instate != XML_PARSER_EOF)) {
5240: /*
5241: * SAX: end of the document processing.
5242: */
5243: ctxt->instate = XML_PARSER_EOF;
5244: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
5245: ctxt->sax->endDocument(ctxt->userData);
5246: }
5247: }
5248: if (avail < 1)
5249: goto done;
5250: cur = in->cur[0];
5251: if (cur == 0) {
5252: SKIP(1);
5253: continue;
5254: }
5255:
5256: switch (ctxt->instate) {
5257: case XML_PARSER_EOF:
5258: /*
5259: * Document parsing is done !
5260: */
5261: goto done;
5262: case XML_PARSER_START:
5263: /*
5264: * Very first chars read from the document flow.
5265: */
5266: cur = in->cur[0];
5267: if (IS_BLANK_CH(cur)) {
5268: SKIP_BLANKS;
5269: if (in->buf == NULL)
5270: avail = in->length - (in->cur - in->base);
5271: else
5272: avail = in->buf->buffer->use - (in->cur - in->base);
5273: }
5274: if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
5275: ctxt->sax->setDocumentLocator(ctxt->userData,
5276: &xmlDefaultSAXLocator);
5277: if ((ctxt->sax) && (ctxt->sax->startDocument) &&
5278: (!ctxt->disableSAX))
5279: ctxt->sax->startDocument(ctxt->userData);
5280:
5281: cur = in->cur[0];
5282: next = in->cur[1];
5283: if ((cur == '<') && (next == '!') &&
5284: (UPP(2) == 'D') && (UPP(3) == 'O') &&
5285: (UPP(4) == 'C') && (UPP(5) == 'T') &&
5286: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
5287: (UPP(8) == 'E')) {
5288: if ((!terminate) &&
5289: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5290: goto done;
5291: #ifdef DEBUG_PUSH
5292: xmlGenericError(xmlGenericErrorContext,
5293: "HPP: Parsing internal subset\n");
5294: #endif
5295: htmlParseDocTypeDecl(ctxt);
5296: ctxt->instate = XML_PARSER_PROLOG;
5297: #ifdef DEBUG_PUSH
5298: xmlGenericError(xmlGenericErrorContext,
5299: "HPP: entering PROLOG\n");
5300: #endif
5301: } else {
5302: ctxt->instate = XML_PARSER_MISC;
5303: #ifdef DEBUG_PUSH
5304: xmlGenericError(xmlGenericErrorContext,
5305: "HPP: entering MISC\n");
5306: #endif
5307: }
5308: break;
5309: case XML_PARSER_MISC:
5310: SKIP_BLANKS;
5311: if (in->buf == NULL)
5312: avail = in->length - (in->cur - in->base);
5313: else
5314: avail = in->buf->buffer->use - (in->cur - in->base);
5315: if (avail < 2)
5316: goto done;
5317: cur = in->cur[0];
5318: next = in->cur[1];
5319: if ((cur == '<') && (next == '!') &&
5320: (in->cur[2] == '-') && (in->cur[3] == '-')) {
5321: if ((!terminate) &&
5322: (htmlParseLookupSequence(ctxt, '-', '-', '>', 1, 1) < 0))
5323: goto done;
5324: #ifdef DEBUG_PUSH
5325: xmlGenericError(xmlGenericErrorContext,
5326: "HPP: Parsing Comment\n");
5327: #endif
5328: htmlParseComment(ctxt);
5329: ctxt->instate = XML_PARSER_MISC;
5330: } else if ((cur == '<') && (next == '?')) {
5331: if ((!terminate) &&
5332: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5333: goto done;
5334: #ifdef DEBUG_PUSH
5335: xmlGenericError(xmlGenericErrorContext,
5336: "HPP: Parsing PI\n");
5337: #endif
5338: htmlParsePI(ctxt);
5339: ctxt->instate = XML_PARSER_MISC;
5340: } else if ((cur == '<') && (next == '!') &&
5341: (UPP(2) == 'D') && (UPP(3) == 'O') &&
5342: (UPP(4) == 'C') && (UPP(5) == 'T') &&
5343: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
5344: (UPP(8) == 'E')) {
5345: if ((!terminate) &&
5346: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5347: goto done;
5348: #ifdef DEBUG_PUSH
5349: xmlGenericError(xmlGenericErrorContext,
5350: "HPP: Parsing internal subset\n");
5351: #endif
5352: htmlParseDocTypeDecl(ctxt);
5353: ctxt->instate = XML_PARSER_PROLOG;
5354: #ifdef DEBUG_PUSH
5355: xmlGenericError(xmlGenericErrorContext,
5356: "HPP: entering PROLOG\n");
5357: #endif
5358: } else if ((cur == '<') && (next == '!') &&
5359: (avail < 9)) {
5360: goto done;
5361: } else {
5362: ctxt->instate = XML_PARSER_START_TAG;
5363: #ifdef DEBUG_PUSH
5364: xmlGenericError(xmlGenericErrorContext,
5365: "HPP: entering START_TAG\n");
5366: #endif
5367: }
5368: break;
5369: case XML_PARSER_PROLOG:
5370: SKIP_BLANKS;
5371: if (in->buf == NULL)
5372: avail = in->length - (in->cur - in->base);
5373: else
5374: avail = in->buf->buffer->use - (in->cur - in->base);
5375: if (avail < 2)
5376: goto done;
5377: cur = in->cur[0];
5378: next = in->cur[1];
5379: if ((cur == '<') && (next == '!') &&
5380: (in->cur[2] == '-') && (in->cur[3] == '-')) {
5381: if ((!terminate) &&
5382: (htmlParseLookupSequence(ctxt, '-', '-', '>', 1, 1) < 0))
5383: goto done;
5384: #ifdef DEBUG_PUSH
5385: xmlGenericError(xmlGenericErrorContext,
5386: "HPP: Parsing Comment\n");
5387: #endif
5388: htmlParseComment(ctxt);
5389: ctxt->instate = XML_PARSER_PROLOG;
5390: } else if ((cur == '<') && (next == '?')) {
5391: if ((!terminate) &&
5392: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5393: goto done;
5394: #ifdef DEBUG_PUSH
5395: xmlGenericError(xmlGenericErrorContext,
5396: "HPP: Parsing PI\n");
5397: #endif
5398: htmlParsePI(ctxt);
5399: ctxt->instate = XML_PARSER_PROLOG;
5400: } else if ((cur == '<') && (next == '!') &&
5401: (avail < 4)) {
5402: goto done;
5403: } else {
5404: ctxt->instate = XML_PARSER_START_TAG;
5405: #ifdef DEBUG_PUSH
5406: xmlGenericError(xmlGenericErrorContext,
5407: "HPP: entering START_TAG\n");
5408: #endif
5409: }
5410: break;
5411: case XML_PARSER_EPILOG:
5412: if (in->buf == NULL)
5413: avail = in->length - (in->cur - in->base);
5414: else
5415: avail = in->buf->buffer->use - (in->cur - in->base);
5416: if (avail < 1)
5417: goto done;
5418: cur = in->cur[0];
5419: if (IS_BLANK_CH(cur)) {
5420: htmlParseCharData(ctxt);
5421: goto done;
5422: }
5423: if (avail < 2)
5424: goto done;
5425: next = in->cur[1];
5426: if ((cur == '<') && (next == '!') &&
5427: (in->cur[2] == '-') && (in->cur[3] == '-')) {
5428: if ((!terminate) &&
5429: (htmlParseLookupSequence(ctxt, '-', '-', '>', 1, 1) < 0))
5430: goto done;
5431: #ifdef DEBUG_PUSH
5432: xmlGenericError(xmlGenericErrorContext,
5433: "HPP: Parsing Comment\n");
5434: #endif
5435: htmlParseComment(ctxt);
5436: ctxt->instate = XML_PARSER_EPILOG;
5437: } else if ((cur == '<') && (next == '?')) {
5438: if ((!terminate) &&
5439: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5440: goto done;
5441: #ifdef DEBUG_PUSH
5442: xmlGenericError(xmlGenericErrorContext,
5443: "HPP: Parsing PI\n");
5444: #endif
5445: htmlParsePI(ctxt);
5446: ctxt->instate = XML_PARSER_EPILOG;
5447: } else if ((cur == '<') && (next == '!') &&
5448: (avail < 4)) {
5449: goto done;
5450: } else {
5451: ctxt->errNo = XML_ERR_DOCUMENT_END;
5452: ctxt->wellFormed = 0;
5453: ctxt->instate = XML_PARSER_EOF;
5454: #ifdef DEBUG_PUSH
5455: xmlGenericError(xmlGenericErrorContext,
5456: "HPP: entering EOF\n");
5457: #endif
5458: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
5459: ctxt->sax->endDocument(ctxt->userData);
5460: goto done;
5461: }
5462: break;
5463: case XML_PARSER_START_TAG: {
5464: const xmlChar *name;
5465: int failed;
5466: const htmlElemDesc * info;
5467:
5468: if (avail < 2)
5469: goto done;
5470: cur = in->cur[0];
5471: if (cur != '<') {
5472: ctxt->instate = XML_PARSER_CONTENT;
5473: #ifdef DEBUG_PUSH
5474: xmlGenericError(xmlGenericErrorContext,
5475: "HPP: entering CONTENT\n");
5476: #endif
5477: break;
5478: }
5479: if (in->cur[1] == '/') {
5480: ctxt->instate = XML_PARSER_END_TAG;
5481: ctxt->checkIndex = 0;
5482: #ifdef DEBUG_PUSH
5483: xmlGenericError(xmlGenericErrorContext,
5484: "HPP: entering END_TAG\n");
5485: #endif
5486: break;
5487: }
5488: if ((!terminate) &&
5489: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5490: goto done;
5491:
5492: failed = htmlParseStartTag(ctxt);
5493: name = ctxt->name;
5494: if ((failed == -1) ||
5495: (name == NULL)) {
5496: if (CUR == '>')
5497: NEXT;
5498: break;
5499: }
5500:
5501: /*
5502: * Lookup the info for that element.
5503: */
5504: info = htmlTagLookup(name);
5505: if (info == NULL) {
5506: htmlParseErr(ctxt, XML_HTML_UNKNOWN_TAG,
5507: "Tag %s invalid\n", name, NULL);
5508: }
5509:
5510: /*
5511: * Check for an Empty Element labeled the XML/SGML way
5512: */
5513: if ((CUR == '/') && (NXT(1) == '>')) {
5514: SKIP(2);
5515: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
5516: ctxt->sax->endElement(ctxt->userData, name);
5517: htmlnamePop(ctxt);
5518: ctxt->instate = XML_PARSER_CONTENT;
5519: #ifdef DEBUG_PUSH
5520: xmlGenericError(xmlGenericErrorContext,
5521: "HPP: entering CONTENT\n");
5522: #endif
5523: break;
5524: }
5525:
5526: if (CUR == '>') {
5527: NEXT;
5528: } else {
5529: htmlParseErr(ctxt, XML_ERR_GT_REQUIRED,
5530: "Couldn't find end of Start Tag %s\n",
5531: name, NULL);
5532:
5533: /*
5534: * end of parsing of this node.
5535: */
5536: if (xmlStrEqual(name, ctxt->name)) {
5537: nodePop(ctxt);
5538: htmlnamePop(ctxt);
5539: }
5540:
5541: ctxt->instate = XML_PARSER_CONTENT;
5542: #ifdef DEBUG_PUSH
5543: xmlGenericError(xmlGenericErrorContext,
5544: "HPP: entering CONTENT\n");
5545: #endif
5546: break;
5547: }
5548:
5549: /*
5550: * Check for an Empty Element from DTD definition
5551: */
5552: if ((info != NULL) && (info->empty)) {
5553: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
5554: ctxt->sax->endElement(ctxt->userData, name);
5555: htmlnamePop(ctxt);
5556: }
5557: ctxt->instate = XML_PARSER_CONTENT;
5558: #ifdef DEBUG_PUSH
5559: xmlGenericError(xmlGenericErrorContext,
5560: "HPP: entering CONTENT\n");
5561: #endif
5562: break;
5563: }
5564: case XML_PARSER_CONTENT: {
5565: long cons;
5566: /*
5567: * Handle preparsed entities and charRef
5568: */
5569: if (ctxt->token != 0) {
5570: xmlChar chr[2] = { 0 , 0 } ;
5571:
5572: chr[0] = (xmlChar) ctxt->token;
5573: htmlCheckParagraph(ctxt);
5574: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
5575: ctxt->sax->characters(ctxt->userData, chr, 1);
5576: ctxt->token = 0;
5577: ctxt->checkIndex = 0;
5578: }
5579: if ((avail == 1) && (terminate)) {
5580: cur = in->cur[0];
5581: if ((cur != '<') && (cur != '&')) {
5582: if (ctxt->sax != NULL) {
5583: if (IS_BLANK_CH(cur)) {
5584: if (ctxt->sax->ignorableWhitespace != NULL)
5585: ctxt->sax->ignorableWhitespace(
5586: ctxt->userData, &cur, 1);
5587: } else {
5588: htmlCheckParagraph(ctxt);
5589: if (ctxt->sax->characters != NULL)
5590: ctxt->sax->characters(
5591: ctxt->userData, &cur, 1);
5592: }
5593: }
5594: ctxt->token = 0;
5595: ctxt->checkIndex = 0;
5596: in->cur++;
5597: break;
5598: }
5599: }
5600: if (avail < 2)
5601: goto done;
5602: cur = in->cur[0];
5603: next = in->cur[1];
5604: cons = ctxt->nbChars;
5605: if ((xmlStrEqual(ctxt->name, BAD_CAST"script")) ||
5606: (xmlStrEqual(ctxt->name, BAD_CAST"style"))) {
5607: /*
5608: * Handle SCRIPT/STYLE separately
5609: */
5610: if (!terminate) {
5611: int idx;
5612: xmlChar val;
5613:
5614: idx = htmlParseLookupSequence(ctxt, '<', '/', 0, 0, 0);
5615: if (idx < 0)
5616: goto done;
5617: val = in->cur[idx + 2];
5618: if (val == 0) /* bad cut of input */
5619: goto done;
5620: }
5621: htmlParseScript(ctxt);
5622: if ((cur == '<') && (next == '/')) {
5623: ctxt->instate = XML_PARSER_END_TAG;
5624: ctxt->checkIndex = 0;
5625: #ifdef DEBUG_PUSH
5626: xmlGenericError(xmlGenericErrorContext,
5627: "HPP: entering END_TAG\n");
5628: #endif
5629: break;
5630: }
5631: } else {
5632: /*
5633: * Sometimes DOCTYPE arrives in the middle of the document
5634: */
5635: if ((cur == '<') && (next == '!') &&
5636: (UPP(2) == 'D') && (UPP(3) == 'O') &&
5637: (UPP(4) == 'C') && (UPP(5) == 'T') &&
5638: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
5639: (UPP(8) == 'E')) {
5640: if ((!terminate) &&
5641: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5642: goto done;
5643: htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
5644: "Misplaced DOCTYPE declaration\n",
5645: BAD_CAST "DOCTYPE" , NULL);
5646: htmlParseDocTypeDecl(ctxt);
5647: } else if ((cur == '<') && (next == '!') &&
5648: (in->cur[2] == '-') && (in->cur[3] == '-')) {
5649: if ((!terminate) &&
5650: (htmlParseLookupSequence(
5651: ctxt, '-', '-', '>', 1, 1) < 0))
5652: goto done;
5653: #ifdef DEBUG_PUSH
5654: xmlGenericError(xmlGenericErrorContext,
5655: "HPP: Parsing Comment\n");
5656: #endif
5657: htmlParseComment(ctxt);
5658: ctxt->instate = XML_PARSER_CONTENT;
5659: } else if ((cur == '<') && (next == '?')) {
5660: if ((!terminate) &&
5661: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5662: goto done;
5663: #ifdef DEBUG_PUSH
5664: xmlGenericError(xmlGenericErrorContext,
5665: "HPP: Parsing PI\n");
5666: #endif
5667: htmlParsePI(ctxt);
5668: ctxt->instate = XML_PARSER_CONTENT;
5669: } else if ((cur == '<') && (next == '!') && (avail < 4)) {
5670: goto done;
5671: } else if ((cur == '<') && (next == '/')) {
5672: ctxt->instate = XML_PARSER_END_TAG;
5673: ctxt->checkIndex = 0;
5674: #ifdef DEBUG_PUSH
5675: xmlGenericError(xmlGenericErrorContext,
5676: "HPP: entering END_TAG\n");
5677: #endif
5678: break;
5679: } else if (cur == '<') {
5680: ctxt->instate = XML_PARSER_START_TAG;
5681: ctxt->checkIndex = 0;
5682: #ifdef DEBUG_PUSH
5683: xmlGenericError(xmlGenericErrorContext,
5684: "HPP: entering START_TAG\n");
5685: #endif
5686: break;
5687: } else if (cur == '&') {
5688: if ((!terminate) &&
5689: (htmlParseLookupChars(ctxt,
5690: BAD_CAST "; >/", 4) < 0))
5691: goto done;
5692: #ifdef DEBUG_PUSH
5693: xmlGenericError(xmlGenericErrorContext,
5694: "HPP: Parsing Reference\n");
5695: #endif
5696: /* TODO: check generation of subtrees if noent !!! */
5697: htmlParseReference(ctxt);
5698: } else {
5699: /*
5700: * check that the text sequence is complete
5701: * before handing out the data to the parser
5702: * to avoid problems with erroneous end of
5703: * data detection.
5704: */
5705: if ((!terminate) &&
5706: (htmlParseLookupChars(ctxt, BAD_CAST "<&", 2) < 0))
5707: goto done;
5708: ctxt->checkIndex = 0;
5709: #ifdef DEBUG_PUSH
5710: xmlGenericError(xmlGenericErrorContext,
5711: "HPP: Parsing char data\n");
5712: #endif
5713: htmlParseCharData(ctxt);
5714: }
5715: }
5716: if (cons == ctxt->nbChars) {
5717: if (ctxt->node != NULL) {
5718: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5719: "detected an error in element content\n",
5720: NULL, NULL);
5721: }
5722: NEXT;
5723: break;
5724: }
5725:
5726: break;
5727: }
5728: case XML_PARSER_END_TAG:
5729: if (avail < 2)
5730: goto done;
5731: if ((!terminate) &&
5732: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5733: goto done;
5734: htmlParseEndTag(ctxt);
5735: if (ctxt->nameNr == 0) {
5736: ctxt->instate = XML_PARSER_EPILOG;
5737: } else {
5738: ctxt->instate = XML_PARSER_CONTENT;
5739: }
5740: ctxt->checkIndex = 0;
5741: #ifdef DEBUG_PUSH
5742: xmlGenericError(xmlGenericErrorContext,
5743: "HPP: entering CONTENT\n");
5744: #endif
5745: break;
5746: case XML_PARSER_CDATA_SECTION:
5747: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5748: "HPP: internal error, state == CDATA\n",
5749: NULL, NULL);
5750: ctxt->instate = XML_PARSER_CONTENT;
5751: ctxt->checkIndex = 0;
5752: #ifdef DEBUG_PUSH
5753: xmlGenericError(xmlGenericErrorContext,
5754: "HPP: entering CONTENT\n");
5755: #endif
5756: break;
5757: case XML_PARSER_DTD:
5758: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5759: "HPP: internal error, state == DTD\n",
5760: NULL, NULL);
5761: ctxt->instate = XML_PARSER_CONTENT;
5762: ctxt->checkIndex = 0;
5763: #ifdef DEBUG_PUSH
5764: xmlGenericError(xmlGenericErrorContext,
5765: "HPP: entering CONTENT\n");
5766: #endif
5767: break;
5768: case XML_PARSER_COMMENT:
5769: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5770: "HPP: internal error, state == COMMENT\n",
5771: NULL, NULL);
5772: ctxt->instate = XML_PARSER_CONTENT;
5773: ctxt->checkIndex = 0;
5774: #ifdef DEBUG_PUSH
5775: xmlGenericError(xmlGenericErrorContext,
5776: "HPP: entering CONTENT\n");
5777: #endif
5778: break;
5779: case XML_PARSER_PI:
5780: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5781: "HPP: internal error, state == PI\n",
5782: NULL, NULL);
5783: ctxt->instate = XML_PARSER_CONTENT;
5784: ctxt->checkIndex = 0;
5785: #ifdef DEBUG_PUSH
5786: xmlGenericError(xmlGenericErrorContext,
5787: "HPP: entering CONTENT\n");
5788: #endif
5789: break;
5790: case XML_PARSER_ENTITY_DECL:
5791: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5792: "HPP: internal error, state == ENTITY_DECL\n",
5793: NULL, NULL);
5794: ctxt->instate = XML_PARSER_CONTENT;
5795: ctxt->checkIndex = 0;
5796: #ifdef DEBUG_PUSH
5797: xmlGenericError(xmlGenericErrorContext,
5798: "HPP: entering CONTENT\n");
5799: #endif
5800: break;
5801: case XML_PARSER_ENTITY_VALUE:
5802: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5803: "HPP: internal error, state == ENTITY_VALUE\n",
5804: NULL, NULL);
5805: ctxt->instate = XML_PARSER_CONTENT;
5806: ctxt->checkIndex = 0;
5807: #ifdef DEBUG_PUSH
5808: xmlGenericError(xmlGenericErrorContext,
5809: "HPP: entering DTD\n");
5810: #endif
5811: break;
5812: case XML_PARSER_ATTRIBUTE_VALUE:
5813: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5814: "HPP: internal error, state == ATTRIBUTE_VALUE\n",
5815: NULL, NULL);
5816: ctxt->instate = XML_PARSER_START_TAG;
5817: ctxt->checkIndex = 0;
5818: #ifdef DEBUG_PUSH
5819: xmlGenericError(xmlGenericErrorContext,
5820: "HPP: entering START_TAG\n");
5821: #endif
5822: break;
5823: case XML_PARSER_SYSTEM_LITERAL:
5824: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5825: "HPP: internal error, state == XML_PARSER_SYSTEM_LITERAL\n",
5826: NULL, NULL);
5827: ctxt->instate = XML_PARSER_CONTENT;
5828: ctxt->checkIndex = 0;
5829: #ifdef DEBUG_PUSH
5830: xmlGenericError(xmlGenericErrorContext,
5831: "HPP: entering CONTENT\n");
5832: #endif
5833: break;
5834: case XML_PARSER_IGNORE:
5835: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5836: "HPP: internal error, state == XML_PARSER_IGNORE\n",
5837: NULL, NULL);
5838: ctxt->instate = XML_PARSER_CONTENT;
5839: ctxt->checkIndex = 0;
5840: #ifdef DEBUG_PUSH
5841: xmlGenericError(xmlGenericErrorContext,
5842: "HPP: entering CONTENT\n");
5843: #endif
5844: break;
5845: case XML_PARSER_PUBLIC_LITERAL:
5846: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5847: "HPP: internal error, state == XML_PARSER_LITERAL\n",
5848: NULL, NULL);
5849: ctxt->instate = XML_PARSER_CONTENT;
5850: ctxt->checkIndex = 0;
5851: #ifdef DEBUG_PUSH
5852: xmlGenericError(xmlGenericErrorContext,
5853: "HPP: entering CONTENT\n");
5854: #endif
5855: break;
5856:
5857: }
5858: }
5859: done:
5860: if ((avail == 0) && (terminate)) {
5861: htmlAutoCloseOnEnd(ctxt);
5862: if ((ctxt->nameNr == 0) && (ctxt->instate != XML_PARSER_EOF)) {
5863: /*
5864: * SAX: end of the document processing.
5865: */
5866: ctxt->instate = XML_PARSER_EOF;
5867: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
5868: ctxt->sax->endDocument(ctxt->userData);
5869: }
5870: }
5871: if ((ctxt->myDoc != NULL) &&
5872: ((terminate) || (ctxt->instate == XML_PARSER_EOF) ||
5873: (ctxt->instate == XML_PARSER_EPILOG))) {
5874: xmlDtdPtr dtd;
5875: dtd = xmlGetIntSubset(ctxt->myDoc);
5876: if (dtd == NULL)
5877: ctxt->myDoc->intSubset =
5878: xmlCreateIntSubset(ctxt->myDoc, BAD_CAST "html",
5879: BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN",
5880: BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd");
5881: }
5882: #ifdef DEBUG_PUSH
5883: xmlGenericError(xmlGenericErrorContext, "HPP: done %d\n", ret);
5884: #endif
5885: return(ret);
5886: }
5887:
5888: /**
5889: * htmlParseChunk:
5890: * @ctxt: an HTML parser context
5891: * @chunk: an char array
5892: * @size: the size in byte of the chunk
5893: * @terminate: last chunk indicator
5894: *
5895: * Parse a Chunk of memory
5896: *
5897: * Returns zero if no error, the xmlParserErrors otherwise.
5898: */
5899: int
5900: htmlParseChunk(htmlParserCtxtPtr ctxt, const char *chunk, int size,
5901: int terminate) {
5902: if ((ctxt == NULL) || (ctxt->input == NULL)) {
5903: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5904: "htmlParseChunk: context error\n", NULL, NULL);
5905: return(XML_ERR_INTERNAL_ERROR);
5906: }
5907: if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) &&
5908: (ctxt->input->buf != NULL) && (ctxt->instate != XML_PARSER_EOF)) {
5909: int base = ctxt->input->base - ctxt->input->buf->buffer->content;
5910: int cur = ctxt->input->cur - ctxt->input->base;
5911: int res;
5912:
5913: res = xmlParserInputBufferPush(ctxt->input->buf, size, chunk);
5914: if (res < 0) {
5915: ctxt->errNo = XML_PARSER_EOF;
5916: ctxt->disableSAX = 1;
5917: return (XML_PARSER_EOF);
5918: }
5919: ctxt->input->base = ctxt->input->buf->buffer->content + base;
5920: ctxt->input->cur = ctxt->input->base + cur;
5921: ctxt->input->end =
5922: &ctxt->input->buf->buffer->content[ctxt->input->buf->buffer->use];
5923: #ifdef DEBUG_PUSH
5924: xmlGenericError(xmlGenericErrorContext, "HPP: pushed %d\n", size);
5925: #endif
5926:
5927: #if 0
5928: if ((terminate) || (ctxt->input->buf->buffer->use > 80))
5929: htmlParseTryOrFinish(ctxt, terminate);
5930: #endif
5931: } else if (ctxt->instate != XML_PARSER_EOF) {
5932: if ((ctxt->input != NULL) && ctxt->input->buf != NULL) {
5933: xmlParserInputBufferPtr in = ctxt->input->buf;
5934: if ((in->encoder != NULL) && (in->buffer != NULL) &&
5935: (in->raw != NULL)) {
5936: int nbchars;
5937:
5938: nbchars = xmlCharEncInFunc(in->encoder, in->buffer, in->raw);
5939: if (nbchars < 0) {
5940: htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
5941: "encoder error\n", NULL, NULL);
5942: return(XML_ERR_INVALID_ENCODING);
5943: }
5944: }
5945: }
5946: }
5947: htmlParseTryOrFinish(ctxt, terminate);
5948: if (terminate) {
5949: if ((ctxt->instate != XML_PARSER_EOF) &&
5950: (ctxt->instate != XML_PARSER_EPILOG) &&
5951: (ctxt->instate != XML_PARSER_MISC)) {
5952: ctxt->errNo = XML_ERR_DOCUMENT_END;
5953: ctxt->wellFormed = 0;
5954: }
5955: if (ctxt->instate != XML_PARSER_EOF) {
5956: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
5957: ctxt->sax->endDocument(ctxt->userData);
5958: }
5959: ctxt->instate = XML_PARSER_EOF;
5960: }
5961: return((xmlParserErrors) ctxt->errNo);
5962: }
5963:
5964: /************************************************************************
5965: * *
5966: * User entry points *
5967: * *
5968: ************************************************************************/
5969:
5970: /**
5971: * htmlCreatePushParserCtxt:
5972: * @sax: a SAX handler
5973: * @user_data: The user data returned on SAX callbacks
5974: * @chunk: a pointer to an array of chars
5975: * @size: number of chars in the array
5976: * @filename: an optional file name or URI
5977: * @enc: an optional encoding
5978: *
5979: * Create a parser context for using the HTML parser in push mode
5980: * The value of @filename is used for fetching external entities
5981: * and error/warning reports.
5982: *
5983: * Returns the new parser context or NULL
5984: */
5985: htmlParserCtxtPtr
5986: htmlCreatePushParserCtxt(htmlSAXHandlerPtr sax, void *user_data,
5987: const char *chunk, int size, const char *filename,
5988: xmlCharEncoding enc) {
5989: htmlParserCtxtPtr ctxt;
5990: htmlParserInputPtr inputStream;
5991: xmlParserInputBufferPtr buf;
5992:
5993: xmlInitParser();
5994:
5995: buf = xmlAllocParserInputBuffer(enc);
5996: if (buf == NULL) return(NULL);
5997:
5998: ctxt = htmlNewParserCtxt();
5999: if (ctxt == NULL) {
6000: xmlFreeParserInputBuffer(buf);
6001: return(NULL);
6002: }
6003: if(enc==XML_CHAR_ENCODING_UTF8 || buf->encoder)
6004: ctxt->charset=XML_CHAR_ENCODING_UTF8;
6005: if (sax != NULL) {
6006: if (ctxt->sax != (xmlSAXHandlerPtr) &htmlDefaultSAXHandler)
6007: xmlFree(ctxt->sax);
6008: ctxt->sax = (htmlSAXHandlerPtr) xmlMalloc(sizeof(htmlSAXHandler));
6009: if (ctxt->sax == NULL) {
6010: xmlFree(buf);
6011: xmlFree(ctxt);
6012: return(NULL);
6013: }
6014: memcpy(ctxt->sax, sax, sizeof(htmlSAXHandler));
6015: if (user_data != NULL)
6016: ctxt->userData = user_data;
6017: }
6018: if (filename == NULL) {
6019: ctxt->directory = NULL;
6020: } else {
6021: ctxt->directory = xmlParserGetDirectory(filename);
6022: }
6023:
6024: inputStream = htmlNewInputStream(ctxt);
6025: if (inputStream == NULL) {
6026: xmlFreeParserCtxt(ctxt);
6027: xmlFree(buf);
6028: return(NULL);
6029: }
6030:
6031: if (filename == NULL)
6032: inputStream->filename = NULL;
6033: else
6034: inputStream->filename = (char *)
6035: xmlCanonicPath((const xmlChar *) filename);
6036: inputStream->buf = buf;
6037: inputStream->base = inputStream->buf->buffer->content;
6038: inputStream->cur = inputStream->buf->buffer->content;
6039: inputStream->end =
6040: &inputStream->buf->buffer->content[inputStream->buf->buffer->use];
6041:
6042: inputPush(ctxt, inputStream);
6043:
6044: if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) &&
6045: (ctxt->input->buf != NULL)) {
6046: int base = ctxt->input->base - ctxt->input->buf->buffer->content;
6047: int cur = ctxt->input->cur - ctxt->input->base;
6048:
6049: xmlParserInputBufferPush(ctxt->input->buf, size, chunk);
6050:
6051: ctxt->input->base = ctxt->input->buf->buffer->content + base;
6052: ctxt->input->cur = ctxt->input->base + cur;
6053: ctxt->input->end =
6054: &ctxt->input->buf->buffer->content[ctxt->input->buf->buffer->use];
6055: #ifdef DEBUG_PUSH
6056: xmlGenericError(xmlGenericErrorContext, "HPP: pushed %d\n", size);
6057: #endif
6058: }
6059: ctxt->progressive = 1;
6060:
6061: return(ctxt);
6062: }
6063: #endif /* LIBXML_PUSH_ENABLED */
6064:
6065: /**
6066: * htmlSAXParseDoc:
6067: * @cur: a pointer to an array of xmlChar
6068: * @encoding: a free form C string describing the HTML document encoding, or NULL
6069: * @sax: the SAX handler block
6070: * @userData: if using SAX, this pointer will be provided on callbacks.
6071: *
6072: * Parse an HTML in-memory document. If sax is not NULL, use the SAX callbacks
6073: * to handle parse events. If sax is NULL, fallback to the default DOM
6074: * behavior and return a tree.
6075: *
6076: * Returns the resulting document tree unless SAX is NULL or the document is
6077: * not well formed.
6078: */
6079:
6080: htmlDocPtr
6081: htmlSAXParseDoc(xmlChar *cur, const char *encoding, htmlSAXHandlerPtr sax, void *userData) {
6082: htmlDocPtr ret;
6083: htmlParserCtxtPtr ctxt;
6084:
6085: xmlInitParser();
6086:
6087: if (cur == NULL) return(NULL);
6088:
6089:
6090: ctxt = htmlCreateDocParserCtxt(cur, encoding);
6091: if (ctxt == NULL) return(NULL);
6092: if (sax != NULL) {
6093: if (ctxt->sax != NULL) xmlFree (ctxt->sax);
6094: ctxt->sax = sax;
6095: ctxt->userData = userData;
6096: }
6097:
6098: htmlParseDocument(ctxt);
6099: ret = ctxt->myDoc;
6100: if (sax != NULL) {
6101: ctxt->sax = NULL;
6102: ctxt->userData = NULL;
6103: }
6104: htmlFreeParserCtxt(ctxt);
6105:
6106: return(ret);
6107: }
6108:
6109: /**
6110: * htmlParseDoc:
6111: * @cur: a pointer to an array of xmlChar
6112: * @encoding: a free form C string describing the HTML document encoding, or NULL
6113: *
6114: * parse an HTML in-memory document and build a tree.
6115: *
6116: * Returns the resulting document tree
6117: */
6118:
6119: htmlDocPtr
6120: htmlParseDoc(xmlChar *cur, const char *encoding) {
6121: return(htmlSAXParseDoc(cur, encoding, NULL, NULL));
6122: }
6123:
6124:
6125: /**
6126: * htmlCreateFileParserCtxt:
6127: * @filename: the filename
6128: * @encoding: a free form C string describing the HTML document encoding, or NULL
6129: *
6130: * Create a parser context for a file content.
6131: * Automatic support for ZLIB/Compress compressed document is provided
6132: * by default if found at compile-time.
6133: *
6134: * Returns the new parser context or NULL
6135: */
6136: htmlParserCtxtPtr
6137: htmlCreateFileParserCtxt(const char *filename, const char *encoding)
6138: {
6139: htmlParserCtxtPtr ctxt;
6140: htmlParserInputPtr inputStream;
6141: char *canonicFilename;
6142: /* htmlCharEncoding enc; */
6143: xmlChar *content, *content_line = (xmlChar *) "charset=";
6144:
6145: if (filename == NULL)
6146: return(NULL);
6147:
6148: ctxt = htmlNewParserCtxt();
6149: if (ctxt == NULL) {
6150: return(NULL);
6151: }
6152: canonicFilename = (char *) xmlCanonicPath((const xmlChar *) filename);
6153: if (canonicFilename == NULL) {
6154: #ifdef LIBXML_SAX1_ENABLED
6155: if (xmlDefaultSAXHandler.error != NULL) {
6156: xmlDefaultSAXHandler.error(NULL, "out of memory\n");
6157: }
6158: #endif
6159: xmlFreeParserCtxt(ctxt);
6160: return(NULL);
6161: }
6162:
6163: inputStream = xmlLoadExternalEntity(canonicFilename, NULL, ctxt);
6164: xmlFree(canonicFilename);
6165: if (inputStream == NULL) {
6166: xmlFreeParserCtxt(ctxt);
6167: return(NULL);
6168: }
6169:
6170: inputPush(ctxt, inputStream);
6171:
6172: /* set encoding */
6173: if (encoding) {
6174: content = xmlMallocAtomic (xmlStrlen(content_line) + strlen(encoding) + 1);
6175: if (content) {
6176: strcpy ((char *)content, (char *)content_line);
6177: strcat ((char *)content, (char *)encoding);
6178: htmlCheckEncoding (ctxt, content);
6179: xmlFree (content);
6180: }
6181: }
6182:
6183: return(ctxt);
6184: }
6185:
6186: /**
6187: * htmlSAXParseFile:
6188: * @filename: the filename
6189: * @encoding: a free form C string describing the HTML document encoding, or NULL
6190: * @sax: the SAX handler block
6191: * @userData: if using SAX, this pointer will be provided on callbacks.
6192: *
6193: * parse an HTML file and build a tree. Automatic support for ZLIB/Compress
6194: * compressed document is provided by default if found at compile-time.
6195: * It use the given SAX function block to handle the parsing callback.
6196: * If sax is NULL, fallback to the default DOM tree building routines.
6197: *
6198: * Returns the resulting document tree unless SAX is NULL or the document is
6199: * not well formed.
6200: */
6201:
6202: htmlDocPtr
6203: htmlSAXParseFile(const char *filename, const char *encoding, htmlSAXHandlerPtr sax,
6204: void *userData) {
6205: htmlDocPtr ret;
6206: htmlParserCtxtPtr ctxt;
6207: htmlSAXHandlerPtr oldsax = NULL;
6208:
6209: xmlInitParser();
6210:
6211: ctxt = htmlCreateFileParserCtxt(filename, encoding);
6212: if (ctxt == NULL) return(NULL);
6213: if (sax != NULL) {
6214: oldsax = ctxt->sax;
6215: ctxt->sax = sax;
6216: ctxt->userData = userData;
6217: }
6218:
6219: htmlParseDocument(ctxt);
6220:
6221: ret = ctxt->myDoc;
6222: if (sax != NULL) {
6223: ctxt->sax = oldsax;
6224: ctxt->userData = NULL;
6225: }
6226: htmlFreeParserCtxt(ctxt);
6227:
6228: return(ret);
6229: }
6230:
6231: /**
6232: * htmlParseFile:
6233: * @filename: the filename
6234: * @encoding: a free form C string describing the HTML document encoding, or NULL
6235: *
6236: * parse an HTML file and build a tree. Automatic support for ZLIB/Compress
6237: * compressed document is provided by default if found at compile-time.
6238: *
6239: * Returns the resulting document tree
6240: */
6241:
6242: htmlDocPtr
6243: htmlParseFile(const char *filename, const char *encoding) {
6244: return(htmlSAXParseFile(filename, encoding, NULL, NULL));
6245: }
6246:
6247: /**
6248: * htmlHandleOmittedElem:
6249: * @val: int 0 or 1
6250: *
6251: * Set and return the previous value for handling HTML omitted tags.
6252: *
6253: * Returns the last value for 0 for no handling, 1 for auto insertion.
6254: */
6255:
6256: int
6257: htmlHandleOmittedElem(int val) {
6258: int old = htmlOmittedDefaultValue;
6259:
6260: htmlOmittedDefaultValue = val;
6261: return(old);
6262: }
6263:
6264: /**
6265: * htmlElementAllowedHere:
6266: * @parent: HTML parent element
6267: * @elt: HTML element
6268: *
6269: * Checks whether an HTML element may be a direct child of a parent element.
6270: * Note - doesn't check for deprecated elements
6271: *
6272: * Returns 1 if allowed; 0 otherwise.
6273: */
6274: int
6275: htmlElementAllowedHere(const htmlElemDesc* parent, const xmlChar* elt) {
6276: const char** p ;
6277:
6278: if ( ! elt || ! parent || ! parent->subelts )
6279: return 0 ;
6280:
6281: for ( p = parent->subelts; *p; ++p )
6282: if ( !xmlStrcmp((const xmlChar *)*p, elt) )
6283: return 1 ;
6284:
6285: return 0 ;
6286: }
6287: /**
6288: * htmlElementStatusHere:
6289: * @parent: HTML parent element
6290: * @elt: HTML element
6291: *
6292: * Checks whether an HTML element may be a direct child of a parent element.
6293: * and if so whether it is valid or deprecated.
6294: *
6295: * Returns one of HTML_VALID, HTML_DEPRECATED, HTML_INVALID
6296: */
6297: htmlStatus
6298: htmlElementStatusHere(const htmlElemDesc* parent, const htmlElemDesc* elt) {
6299: if ( ! parent || ! elt )
6300: return HTML_INVALID ;
6301: if ( ! htmlElementAllowedHere(parent, (const xmlChar*) elt->name ) )
6302: return HTML_INVALID ;
6303:
6304: return ( elt->dtd == 0 ) ? HTML_VALID : HTML_DEPRECATED ;
6305: }
6306: /**
6307: * htmlAttrAllowed:
6308: * @elt: HTML element
6309: * @attr: HTML attribute
6310: * @legacy: whether to allow deprecated attributes
6311: *
6312: * Checks whether an attribute is valid for an element
6313: * Has full knowledge of Required and Deprecated attributes
6314: *
6315: * Returns one of HTML_REQUIRED, HTML_VALID, HTML_DEPRECATED, HTML_INVALID
6316: */
6317: htmlStatus
6318: htmlAttrAllowed(const htmlElemDesc* elt, const xmlChar* attr, int legacy) {
6319: const char** p ;
6320:
6321: if ( !elt || ! attr )
6322: return HTML_INVALID ;
6323:
6324: if ( elt->attrs_req )
6325: for ( p = elt->attrs_req; *p; ++p)
6326: if ( !xmlStrcmp((const xmlChar*)*p, attr) )
6327: return HTML_REQUIRED ;
6328:
6329: if ( elt->attrs_opt )
6330: for ( p = elt->attrs_opt; *p; ++p)
6331: if ( !xmlStrcmp((const xmlChar*)*p, attr) )
6332: return HTML_VALID ;
6333:
6334: if ( legacy && elt->attrs_depr )
6335: for ( p = elt->attrs_depr; *p; ++p)
6336: if ( !xmlStrcmp((const xmlChar*)*p, attr) )
6337: return HTML_DEPRECATED ;
6338:
6339: return HTML_INVALID ;
6340: }
6341: /**
6342: * htmlNodeStatus:
6343: * @node: an htmlNodePtr in a tree
6344: * @legacy: whether to allow deprecated elements (YES is faster here
6345: * for Element nodes)
6346: *
6347: * Checks whether the tree node is valid. Experimental (the author
6348: * only uses the HTML enhancements in a SAX parser)
6349: *
6350: * Return: for Element nodes, a return from htmlElementAllowedHere (if
6351: * legacy allowed) or htmlElementStatusHere (otherwise).
6352: * for Attribute nodes, a return from htmlAttrAllowed
6353: * for other nodes, HTML_NA (no checks performed)
6354: */
6355: htmlStatus
6356: htmlNodeStatus(const htmlNodePtr node, int legacy) {
6357: if ( ! node )
6358: return HTML_INVALID ;
6359:
6360: switch ( node->type ) {
6361: case XML_ELEMENT_NODE:
6362: return legacy
6363: ? ( htmlElementAllowedHere (
6364: htmlTagLookup(node->parent->name) , node->name
6365: ) ? HTML_VALID : HTML_INVALID )
6366: : htmlElementStatusHere(
6367: htmlTagLookup(node->parent->name) ,
6368: htmlTagLookup(node->name) )
6369: ;
6370: case XML_ATTRIBUTE_NODE:
6371: return htmlAttrAllowed(
6372: htmlTagLookup(node->parent->name) , node->name, legacy) ;
6373: default: return HTML_NA ;
6374: }
6375: }
6376: /************************************************************************
6377: * *
6378: * New set (2.6.0) of simpler and more flexible APIs *
6379: * *
6380: ************************************************************************/
6381: /**
6382: * DICT_FREE:
6383: * @str: a string
6384: *
6385: * Free a string if it is not owned by the "dict" dictionnary in the
6386: * current scope
6387: */
6388: #define DICT_FREE(str) \
6389: if ((str) && ((!dict) || \
6390: (xmlDictOwns(dict, (const xmlChar *)(str)) == 0))) \
6391: xmlFree((char *)(str));
6392:
6393: /**
6394: * htmlCtxtReset:
6395: * @ctxt: an HTML parser context
6396: *
6397: * Reset a parser context
6398: */
6399: void
6400: htmlCtxtReset(htmlParserCtxtPtr ctxt)
6401: {
6402: xmlParserInputPtr input;
6403: xmlDictPtr dict;
6404:
6405: if (ctxt == NULL)
6406: return;
6407:
6408: xmlInitParser();
6409: dict = ctxt->dict;
6410:
6411: while ((input = inputPop(ctxt)) != NULL) { /* Non consuming */
6412: xmlFreeInputStream(input);
6413: }
6414: ctxt->inputNr = 0;
6415: ctxt->input = NULL;
6416:
6417: ctxt->spaceNr = 0;
6418: if (ctxt->spaceTab != NULL) {
6419: ctxt->spaceTab[0] = -1;
6420: ctxt->space = &ctxt->spaceTab[0];
6421: } else {
6422: ctxt->space = NULL;
6423: }
6424:
6425:
6426: ctxt->nodeNr = 0;
6427: ctxt->node = NULL;
6428:
6429: ctxt->nameNr = 0;
6430: ctxt->name = NULL;
6431:
6432: DICT_FREE(ctxt->version);
6433: ctxt->version = NULL;
6434: DICT_FREE(ctxt->encoding);
6435: ctxt->encoding = NULL;
6436: DICT_FREE(ctxt->directory);
6437: ctxt->directory = NULL;
6438: DICT_FREE(ctxt->extSubURI);
6439: ctxt->extSubURI = NULL;
6440: DICT_FREE(ctxt->extSubSystem);
6441: ctxt->extSubSystem = NULL;
6442: if (ctxt->myDoc != NULL)
6443: xmlFreeDoc(ctxt->myDoc);
6444: ctxt->myDoc = NULL;
6445:
6446: ctxt->standalone = -1;
6447: ctxt->hasExternalSubset = 0;
6448: ctxt->hasPErefs = 0;
6449: ctxt->html = 1;
6450: ctxt->external = 0;
6451: ctxt->instate = XML_PARSER_START;
6452: ctxt->token = 0;
6453:
6454: ctxt->wellFormed = 1;
6455: ctxt->nsWellFormed = 1;
6456: ctxt->disableSAX = 0;
6457: ctxt->valid = 1;
6458: ctxt->vctxt.userData = ctxt;
6459: ctxt->vctxt.error = xmlParserValidityError;
6460: ctxt->vctxt.warning = xmlParserValidityWarning;
6461: ctxt->record_info = 0;
6462: ctxt->nbChars = 0;
6463: ctxt->checkIndex = 0;
6464: ctxt->inSubset = 0;
6465: ctxt->errNo = XML_ERR_OK;
6466: ctxt->depth = 0;
6467: ctxt->charset = XML_CHAR_ENCODING_NONE;
6468: ctxt->catalogs = NULL;
6469: xmlInitNodeInfoSeq(&ctxt->node_seq);
6470:
6471: if (ctxt->attsDefault != NULL) {
6472: xmlHashFree(ctxt->attsDefault, (xmlHashDeallocator) xmlFree);
6473: ctxt->attsDefault = NULL;
6474: }
6475: if (ctxt->attsSpecial != NULL) {
6476: xmlHashFree(ctxt->attsSpecial, NULL);
6477: ctxt->attsSpecial = NULL;
6478: }
6479: }
6480:
6481: /**
6482: * htmlCtxtUseOptions:
6483: * @ctxt: an HTML parser context
6484: * @options: a combination of htmlParserOption(s)
6485: *
6486: * Applies the options to the parser context
6487: *
6488: * Returns 0 in case of success, the set of unknown or unimplemented options
6489: * in case of error.
6490: */
6491: int
6492: htmlCtxtUseOptions(htmlParserCtxtPtr ctxt, int options)
6493: {
6494: if (ctxt == NULL)
6495: return(-1);
6496:
6497: if (options & HTML_PARSE_NOWARNING) {
6498: ctxt->sax->warning = NULL;
6499: ctxt->vctxt.warning = NULL;
6500: options -= XML_PARSE_NOWARNING;
6501: ctxt->options |= XML_PARSE_NOWARNING;
6502: }
6503: if (options & HTML_PARSE_NOERROR) {
6504: ctxt->sax->error = NULL;
6505: ctxt->vctxt.error = NULL;
6506: ctxt->sax->fatalError = NULL;
6507: options -= XML_PARSE_NOERROR;
6508: ctxt->options |= XML_PARSE_NOERROR;
6509: }
6510: if (options & HTML_PARSE_PEDANTIC) {
6511: ctxt->pedantic = 1;
6512: options -= XML_PARSE_PEDANTIC;
6513: ctxt->options |= XML_PARSE_PEDANTIC;
6514: } else
6515: ctxt->pedantic = 0;
6516: if (options & XML_PARSE_NOBLANKS) {
6517: ctxt->keepBlanks = 0;
6518: ctxt->sax->ignorableWhitespace = xmlSAX2IgnorableWhitespace;
6519: options -= XML_PARSE_NOBLANKS;
6520: ctxt->options |= XML_PARSE_NOBLANKS;
6521: } else
6522: ctxt->keepBlanks = 1;
6523: if (options & HTML_PARSE_RECOVER) {
6524: ctxt->recovery = 1;
6525: options -= HTML_PARSE_RECOVER;
6526: } else
6527: ctxt->recovery = 0;
6528: if (options & HTML_PARSE_COMPACT) {
6529: ctxt->options |= HTML_PARSE_COMPACT;
6530: options -= HTML_PARSE_COMPACT;
6531: }
6532: if (options & XML_PARSE_HUGE) {
6533: ctxt->options |= XML_PARSE_HUGE;
6534: options -= XML_PARSE_HUGE;
6535: }
6536: if (options & HTML_PARSE_NODEFDTD) {
6537: ctxt->options |= HTML_PARSE_NODEFDTD;
6538: options -= HTML_PARSE_NODEFDTD;
6539: }
6540: ctxt->dictNames = 0;
6541: return (options);
6542: }
6543:
6544: /**
6545: * htmlDoRead:
6546: * @ctxt: an HTML parser context
6547: * @URL: the base URL to use for the document
6548: * @encoding: the document encoding, or NULL
6549: * @options: a combination of htmlParserOption(s)
6550: * @reuse: keep the context for reuse
6551: *
6552: * Common front-end for the htmlRead functions
6553: *
6554: * Returns the resulting document tree or NULL
6555: */
6556: static htmlDocPtr
6557: htmlDoRead(htmlParserCtxtPtr ctxt, const char *URL, const char *encoding,
6558: int options, int reuse)
6559: {
6560: htmlDocPtr ret;
6561:
6562: htmlCtxtUseOptions(ctxt, options);
6563: ctxt->html = 1;
6564: if (encoding != NULL) {
6565: xmlCharEncodingHandlerPtr hdlr;
6566:
6567: hdlr = xmlFindCharEncodingHandler(encoding);
6568: if (hdlr != NULL) {
6569: xmlSwitchToEncoding(ctxt, hdlr);
6570: if (ctxt->input->encoding != NULL)
6571: xmlFree((xmlChar *) ctxt->input->encoding);
6572: ctxt->input->encoding = xmlStrdup((xmlChar *)encoding);
6573: }
6574: }
6575: if ((URL != NULL) && (ctxt->input != NULL) &&
6576: (ctxt->input->filename == NULL))
6577: ctxt->input->filename = (char *) xmlStrdup((const xmlChar *) URL);
6578: htmlParseDocument(ctxt);
6579: ret = ctxt->myDoc;
6580: ctxt->myDoc = NULL;
6581: if (!reuse) {
6582: if ((ctxt->dictNames) &&
6583: (ret != NULL) &&
6584: (ret->dict == ctxt->dict))
6585: ctxt->dict = NULL;
6586: xmlFreeParserCtxt(ctxt);
6587: }
6588: return (ret);
6589: }
6590:
6591: /**
6592: * htmlReadDoc:
6593: * @cur: a pointer to a zero terminated string
6594: * @URL: the base URL to use for the document
6595: * @encoding: the document encoding, or NULL
6596: * @options: a combination of htmlParserOption(s)
6597: *
6598: * parse an XML in-memory document and build a tree.
6599: *
6600: * Returns the resulting document tree
6601: */
6602: htmlDocPtr
6603: htmlReadDoc(const xmlChar * cur, const char *URL, const char *encoding, int options)
6604: {
6605: htmlParserCtxtPtr ctxt;
6606:
6607: if (cur == NULL)
6608: return (NULL);
6609:
6610: xmlInitParser();
6611: ctxt = htmlCreateDocParserCtxt(cur, NULL);
6612: if (ctxt == NULL)
6613: return (NULL);
6614: return (htmlDoRead(ctxt, URL, encoding, options, 0));
6615: }
6616:
6617: /**
6618: * htmlReadFile:
6619: * @filename: a file or URL
6620: * @encoding: the document encoding, or NULL
6621: * @options: a combination of htmlParserOption(s)
6622: *
6623: * parse an XML file from the filesystem or the network.
6624: *
6625: * Returns the resulting document tree
6626: */
6627: htmlDocPtr
6628: htmlReadFile(const char *filename, const char *encoding, int options)
6629: {
6630: htmlParserCtxtPtr ctxt;
6631:
6632: xmlInitParser();
6633: ctxt = htmlCreateFileParserCtxt(filename, encoding);
6634: if (ctxt == NULL)
6635: return (NULL);
6636: return (htmlDoRead(ctxt, NULL, NULL, options, 0));
6637: }
6638:
6639: /**
6640: * htmlReadMemory:
6641: * @buffer: a pointer to a char array
6642: * @size: the size of the array
6643: * @URL: the base URL to use for the document
6644: * @encoding: the document encoding, or NULL
6645: * @options: a combination of htmlParserOption(s)
6646: *
6647: * parse an XML in-memory document and build a tree.
6648: *
6649: * Returns the resulting document tree
6650: */
6651: htmlDocPtr
6652: htmlReadMemory(const char *buffer, int size, const char *URL, const char *encoding, int options)
6653: {
6654: htmlParserCtxtPtr ctxt;
6655:
6656: xmlInitParser();
6657: ctxt = xmlCreateMemoryParserCtxt(buffer, size);
6658: if (ctxt == NULL)
6659: return (NULL);
6660: htmlDefaultSAXHandlerInit();
6661: if (ctxt->sax != NULL)
6662: memcpy(ctxt->sax, &htmlDefaultSAXHandler, sizeof(xmlSAXHandlerV1));
6663: return (htmlDoRead(ctxt, URL, encoding, options, 0));
6664: }
6665:
6666: /**
6667: * htmlReadFd:
6668: * @fd: an open file descriptor
6669: * @URL: the base URL to use for the document
6670: * @encoding: the document encoding, or NULL
6671: * @options: a combination of htmlParserOption(s)
6672: *
6673: * parse an XML from a file descriptor and build a tree.
6674: *
6675: * Returns the resulting document tree
6676: */
6677: htmlDocPtr
6678: htmlReadFd(int fd, const char *URL, const char *encoding, int options)
6679: {
6680: htmlParserCtxtPtr ctxt;
6681: xmlParserInputBufferPtr input;
6682: xmlParserInputPtr stream;
6683:
6684: if (fd < 0)
6685: return (NULL);
6686:
6687: xmlInitParser();
6688: input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE);
6689: if (input == NULL)
6690: return (NULL);
6691: ctxt = xmlNewParserCtxt();
6692: if (ctxt == NULL) {
6693: xmlFreeParserInputBuffer(input);
6694: return (NULL);
6695: }
6696: stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
6697: if (stream == NULL) {
6698: xmlFreeParserInputBuffer(input);
6699: xmlFreeParserCtxt(ctxt);
6700: return (NULL);
6701: }
6702: inputPush(ctxt, stream);
6703: return (htmlDoRead(ctxt, URL, encoding, options, 0));
6704: }
6705:
6706: /**
6707: * htmlReadIO:
6708: * @ioread: an I/O read function
6709: * @ioclose: an I/O close function
6710: * @ioctx: an I/O handler
6711: * @URL: the base URL to use for the document
6712: * @encoding: the document encoding, or NULL
6713: * @options: a combination of htmlParserOption(s)
6714: *
6715: * parse an HTML document from I/O functions and source and build a tree.
6716: *
6717: * Returns the resulting document tree
6718: */
6719: htmlDocPtr
6720: htmlReadIO(xmlInputReadCallback ioread, xmlInputCloseCallback ioclose,
6721: void *ioctx, const char *URL, const char *encoding, int options)
6722: {
6723: htmlParserCtxtPtr ctxt;
6724: xmlParserInputBufferPtr input;
6725: xmlParserInputPtr stream;
6726:
6727: if (ioread == NULL)
6728: return (NULL);
6729: xmlInitParser();
6730:
6731: input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
6732: XML_CHAR_ENCODING_NONE);
6733: if (input == NULL)
6734: return (NULL);
6735: ctxt = htmlNewParserCtxt();
6736: if (ctxt == NULL) {
6737: xmlFreeParserInputBuffer(input);
6738: return (NULL);
6739: }
6740: stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
6741: if (stream == NULL) {
6742: xmlFreeParserInputBuffer(input);
6743: xmlFreeParserCtxt(ctxt);
6744: return (NULL);
6745: }
6746: inputPush(ctxt, stream);
6747: return (htmlDoRead(ctxt, URL, encoding, options, 0));
6748: }
6749:
6750: /**
6751: * htmlCtxtReadDoc:
6752: * @ctxt: an HTML parser context
6753: * @cur: a pointer to a zero terminated string
6754: * @URL: the base URL to use for the document
6755: * @encoding: the document encoding, or NULL
6756: * @options: a combination of htmlParserOption(s)
6757: *
6758: * parse an XML in-memory document and build a tree.
6759: * This reuses the existing @ctxt parser context
6760: *
6761: * Returns the resulting document tree
6762: */
6763: htmlDocPtr
6764: htmlCtxtReadDoc(htmlParserCtxtPtr ctxt, const xmlChar * cur,
6765: const char *URL, const char *encoding, int options)
6766: {
6767: xmlParserInputPtr stream;
6768:
6769: if (cur == NULL)
6770: return (NULL);
6771: if (ctxt == NULL)
6772: return (NULL);
6773:
6774: htmlCtxtReset(ctxt);
6775:
6776: stream = xmlNewStringInputStream(ctxt, cur);
6777: if (stream == NULL) {
6778: return (NULL);
6779: }
6780: inputPush(ctxt, stream);
6781: return (htmlDoRead(ctxt, URL, encoding, options, 1));
6782: }
6783:
6784: /**
6785: * htmlCtxtReadFile:
6786: * @ctxt: an HTML parser context
6787: * @filename: a file or URL
6788: * @encoding: the document encoding, or NULL
6789: * @options: a combination of htmlParserOption(s)
6790: *
6791: * parse an XML file from the filesystem or the network.
6792: * This reuses the existing @ctxt parser context
6793: *
6794: * Returns the resulting document tree
6795: */
6796: htmlDocPtr
6797: htmlCtxtReadFile(htmlParserCtxtPtr ctxt, const char *filename,
6798: const char *encoding, int options)
6799: {
6800: xmlParserInputPtr stream;
6801:
6802: if (filename == NULL)
6803: return (NULL);
6804: if (ctxt == NULL)
6805: return (NULL);
6806:
6807: htmlCtxtReset(ctxt);
6808:
6809: stream = xmlLoadExternalEntity(filename, NULL, ctxt);
6810: if (stream == NULL) {
6811: return (NULL);
6812: }
6813: inputPush(ctxt, stream);
6814: return (htmlDoRead(ctxt, NULL, encoding, options, 1));
6815: }
6816:
6817: /**
6818: * htmlCtxtReadMemory:
6819: * @ctxt: an HTML parser context
6820: * @buffer: a pointer to a char array
6821: * @size: the size of the array
6822: * @URL: the base URL to use for the document
6823: * @encoding: the document encoding, or NULL
6824: * @options: a combination of htmlParserOption(s)
6825: *
6826: * parse an XML in-memory document and build a tree.
6827: * This reuses the existing @ctxt parser context
6828: *
6829: * Returns the resulting document tree
6830: */
6831: htmlDocPtr
6832: htmlCtxtReadMemory(htmlParserCtxtPtr ctxt, const char *buffer, int size,
6833: const char *URL, const char *encoding, int options)
6834: {
6835: xmlParserInputBufferPtr input;
6836: xmlParserInputPtr stream;
6837:
6838: if (ctxt == NULL)
6839: return (NULL);
6840: if (buffer == NULL)
6841: return (NULL);
6842:
6843: htmlCtxtReset(ctxt);
6844:
6845: input = xmlParserInputBufferCreateMem(buffer, size, XML_CHAR_ENCODING_NONE);
6846: if (input == NULL) {
6847: return(NULL);
6848: }
6849:
6850: stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
6851: if (stream == NULL) {
6852: xmlFreeParserInputBuffer(input);
6853: return(NULL);
6854: }
6855:
6856: inputPush(ctxt, stream);
6857: return (htmlDoRead(ctxt, URL, encoding, options, 1));
6858: }
6859:
6860: /**
6861: * htmlCtxtReadFd:
6862: * @ctxt: an HTML parser context
6863: * @fd: an open file descriptor
6864: * @URL: the base URL to use for the document
6865: * @encoding: the document encoding, or NULL
6866: * @options: a combination of htmlParserOption(s)
6867: *
6868: * parse an XML from a file descriptor and build a tree.
6869: * This reuses the existing @ctxt parser context
6870: *
6871: * Returns the resulting document tree
6872: */
6873: htmlDocPtr
6874: htmlCtxtReadFd(htmlParserCtxtPtr ctxt, int fd,
6875: const char *URL, const char *encoding, int options)
6876: {
6877: xmlParserInputBufferPtr input;
6878: xmlParserInputPtr stream;
6879:
6880: if (fd < 0)
6881: return (NULL);
6882: if (ctxt == NULL)
6883: return (NULL);
6884:
6885: htmlCtxtReset(ctxt);
6886:
6887:
6888: input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE);
6889: if (input == NULL)
6890: return (NULL);
6891: stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
6892: if (stream == NULL) {
6893: xmlFreeParserInputBuffer(input);
6894: return (NULL);
6895: }
6896: inputPush(ctxt, stream);
6897: return (htmlDoRead(ctxt, URL, encoding, options, 1));
6898: }
6899:
6900: /**
6901: * htmlCtxtReadIO:
6902: * @ctxt: an HTML parser context
6903: * @ioread: an I/O read function
6904: * @ioclose: an I/O close function
6905: * @ioctx: an I/O handler
6906: * @URL: the base URL to use for the document
6907: * @encoding: the document encoding, or NULL
6908: * @options: a combination of htmlParserOption(s)
6909: *
6910: * parse an HTML document from I/O functions and source and build a tree.
6911: * This reuses the existing @ctxt parser context
6912: *
6913: * Returns the resulting document tree
6914: */
6915: htmlDocPtr
6916: htmlCtxtReadIO(htmlParserCtxtPtr ctxt, xmlInputReadCallback ioread,
6917: xmlInputCloseCallback ioclose, void *ioctx,
6918: const char *URL,
6919: const char *encoding, int options)
6920: {
6921: xmlParserInputBufferPtr input;
6922: xmlParserInputPtr stream;
6923:
6924: if (ioread == NULL)
6925: return (NULL);
6926: if (ctxt == NULL)
6927: return (NULL);
6928:
6929: htmlCtxtReset(ctxt);
6930:
6931: input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
6932: XML_CHAR_ENCODING_NONE);
6933: if (input == NULL)
6934: return (NULL);
6935: stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
6936: if (stream == NULL) {
6937: xmlFreeParserInputBuffer(input);
6938: return (NULL);
6939: }
6940: inputPush(ctxt, stream);
6941: return (htmlDoRead(ctxt, URL, encoding, options, 1));
6942: }
6943:
6944: #define bottom_HTMLparser
6945: #include "elfgcchack.h"
6946: #endif /* LIBXML_HTML_ENABLED */
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