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: #include "buf.h"
48: #include "enc.h"
49:
50: #define HTML_MAX_NAMELEN 1000
51: #define HTML_PARSER_BIG_BUFFER_SIZE 1000
52: #define HTML_PARSER_BUFFER_SIZE 100
53:
54: /* #define DEBUG */
55: /* #define DEBUG_PUSH */
56:
57: static int htmlOmittedDefaultValue = 1;
58:
59: xmlChar * htmlDecodeEntities(htmlParserCtxtPtr ctxt, int len,
60: xmlChar end, xmlChar end2, xmlChar end3);
61: static void htmlParseComment(htmlParserCtxtPtr ctxt);
62:
63: /************************************************************************
64: * *
65: * Some factorized error routines *
66: * *
67: ************************************************************************/
68:
69: /**
70: * htmlErrMemory:
71: * @ctxt: an HTML parser context
72: * @extra: extra informations
73: *
74: * Handle a redefinition of attribute error
75: */
76: static void
77: htmlErrMemory(xmlParserCtxtPtr ctxt, const char *extra)
78: {
79: if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
80: (ctxt->instate == XML_PARSER_EOF))
81: return;
82: if (ctxt != NULL) {
83: ctxt->errNo = XML_ERR_NO_MEMORY;
84: ctxt->instate = XML_PARSER_EOF;
85: ctxt->disableSAX = 1;
86: }
87: if (extra)
88: __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER,
89: XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, extra,
90: NULL, NULL, 0, 0,
91: "Memory allocation failed : %s\n", extra);
92: else
93: __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER,
94: XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, NULL,
95: NULL, NULL, 0, 0, "Memory allocation failed\n");
96: }
97:
98: /**
99: * htmlParseErr:
100: * @ctxt: an HTML parser context
101: * @error: the error number
102: * @msg: the error message
103: * @str1: string infor
104: * @str2: string infor
105: *
106: * Handle a fatal parser error, i.e. violating Well-Formedness constraints
107: */
108: static void
109: htmlParseErr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
110: const char *msg, const xmlChar *str1, const xmlChar *str2)
111: {
112: if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
113: (ctxt->instate == XML_PARSER_EOF))
114: return;
115: if (ctxt != NULL)
116: ctxt->errNo = error;
117: __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_HTML, error,
118: XML_ERR_ERROR, NULL, 0,
119: (const char *) str1, (const char *) str2,
120: NULL, 0, 0,
121: msg, str1, str2);
122: if (ctxt != NULL)
123: ctxt->wellFormed = 0;
124: }
125:
126: /**
127: * htmlParseErrInt:
128: * @ctxt: an HTML parser context
129: * @error: the error number
130: * @msg: the error message
131: * @val: integer info
132: *
133: * Handle a fatal parser error, i.e. violating Well-Formedness constraints
134: */
135: static void
136: htmlParseErrInt(xmlParserCtxtPtr ctxt, xmlParserErrors error,
137: const char *msg, int val)
138: {
139: if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
140: (ctxt->instate == XML_PARSER_EOF))
141: return;
142: if (ctxt != NULL)
143: ctxt->errNo = error;
144: __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_HTML, error,
145: XML_ERR_ERROR, NULL, 0, NULL, NULL,
146: NULL, val, 0, msg, val);
147: if (ctxt != NULL)
148: ctxt->wellFormed = 0;
149: }
150:
151: /************************************************************************
152: * *
153: * Parser stacks related functions and macros *
154: * *
155: ************************************************************************/
156:
157: /**
158: * htmlnamePush:
159: * @ctxt: an HTML parser context
160: * @value: the element name
161: *
162: * Pushes a new element name on top of the name stack
163: *
164: * Returns 0 in case of error, the index in the stack otherwise
165: */
166: static int
167: htmlnamePush(htmlParserCtxtPtr ctxt, const xmlChar * value)
168: {
169: if ((ctxt->html < 3) && (xmlStrEqual(value, BAD_CAST "head")))
170: ctxt->html = 3;
171: if ((ctxt->html < 10) && (xmlStrEqual(value, BAD_CAST "body")))
172: ctxt->html = 10;
173: if (ctxt->nameNr >= ctxt->nameMax) {
174: ctxt->nameMax *= 2;
175: ctxt->nameTab = (const xmlChar * *)
176: xmlRealloc((xmlChar * *)ctxt->nameTab,
177: ctxt->nameMax *
178: sizeof(ctxt->nameTab[0]));
179: if (ctxt->nameTab == NULL) {
180: htmlErrMemory(ctxt, NULL);
181: return (0);
182: }
183: }
184: ctxt->nameTab[ctxt->nameNr] = value;
185: ctxt->name = value;
186: return (ctxt->nameNr++);
187: }
188: /**
189: * htmlnamePop:
190: * @ctxt: an HTML parser context
191: *
192: * Pops the top element name from the name stack
193: *
194: * Returns the name just removed
195: */
196: static const xmlChar *
197: htmlnamePop(htmlParserCtxtPtr ctxt)
198: {
199: const xmlChar *ret;
200:
201: if (ctxt->nameNr <= 0)
202: return (NULL);
203: ctxt->nameNr--;
204: if (ctxt->nameNr < 0)
205: return (NULL);
206: if (ctxt->nameNr > 0)
207: ctxt->name = ctxt->nameTab[ctxt->nameNr - 1];
208: else
209: ctxt->name = NULL;
210: ret = ctxt->nameTab[ctxt->nameNr];
211: ctxt->nameTab[ctxt->nameNr] = NULL;
212: return (ret);
213: }
214:
215: /**
216: * htmlNodeInfoPush:
217: * @ctxt: an HTML parser context
218: * @value: the node info
219: *
220: * Pushes a new element name on top of the node info stack
221: *
222: * Returns 0 in case of error, the index in the stack otherwise
223: */
224: static int
225: htmlNodeInfoPush(htmlParserCtxtPtr ctxt, htmlParserNodeInfo *value)
226: {
227: if (ctxt->nodeInfoNr >= ctxt->nodeInfoMax) {
228: if (ctxt->nodeInfoMax == 0)
229: ctxt->nodeInfoMax = 5;
230: ctxt->nodeInfoMax *= 2;
231: ctxt->nodeInfoTab = (htmlParserNodeInfo *)
232: xmlRealloc((htmlParserNodeInfo *)ctxt->nodeInfoTab,
233: ctxt->nodeInfoMax *
234: sizeof(ctxt->nodeInfoTab[0]));
235: if (ctxt->nodeInfoTab == NULL) {
236: htmlErrMemory(ctxt, NULL);
237: return (0);
238: }
239: }
240: ctxt->nodeInfoTab[ctxt->nodeInfoNr] = *value;
241: ctxt->nodeInfo = &ctxt->nodeInfoTab[ctxt->nodeInfoNr];
242: return (ctxt->nodeInfoNr++);
243: }
244:
245: /**
246: * htmlNodeInfoPop:
247: * @ctxt: an HTML parser context
248: *
249: * Pops the top element name from the node info stack
250: *
251: * Returns 0 in case of error, the pointer to NodeInfo otherwise
252: */
253: static htmlParserNodeInfo *
254: htmlNodeInfoPop(htmlParserCtxtPtr ctxt)
255: {
256: if (ctxt->nodeInfoNr <= 0)
257: return (NULL);
258: ctxt->nodeInfoNr--;
259: if (ctxt->nodeInfoNr < 0)
260: return (NULL);
261: if (ctxt->nodeInfoNr > 0)
262: ctxt->nodeInfo = &ctxt->nodeInfoTab[ctxt->nodeInfoNr - 1];
263: else
264: ctxt->nodeInfo = NULL;
265: return &ctxt->nodeInfoTab[ctxt->nodeInfoNr];
266: }
267:
268: /*
269: * Macros for accessing the content. Those should be used only by the parser,
270: * and not exported.
271: *
272: * Dirty macros, i.e. one need to make assumption on the context to use them
273: *
274: * CUR_PTR return the current pointer to the xmlChar to be parsed.
275: * CUR returns the current xmlChar value, i.e. a 8 bit value if compiled
276: * in ISO-Latin or UTF-8, and the current 16 bit value if compiled
277: * in UNICODE mode. This should be used internally by the parser
278: * only to compare to ASCII values otherwise it would break when
279: * running with UTF-8 encoding.
280: * NXT(n) returns the n'th next xmlChar. Same as CUR is should be used only
281: * to compare on ASCII based substring.
282: * UPP(n) returns the n'th next xmlChar converted to uppercase. Same as CUR
283: * it should be used only to compare on ASCII based substring.
284: * SKIP(n) Skip n xmlChar, and must also be used only to skip ASCII defined
285: * strings without newlines within the parser.
286: *
287: * Clean macros, not dependent of an ASCII context, expect UTF-8 encoding
288: *
289: * CURRENT Returns the current char value, with the full decoding of
290: * UTF-8 if we are using this mode. It returns an int.
291: * NEXT Skip to the next character, this does the proper decoding
292: * in UTF-8 mode. It also pop-up unfinished entities on the fly.
293: * NEXTL(l) Skip the current unicode character of l xmlChars long.
294: * COPY(to) copy one char to *to, increment CUR_PTR and to accordingly
295: */
296:
297: #define UPPER (toupper(*ctxt->input->cur))
298:
299: #define SKIP(val) ctxt->nbChars += (val),ctxt->input->cur += (val),ctxt->input->col+=(val)
300:
301: #define NXT(val) ctxt->input->cur[(val)]
302:
303: #define UPP(val) (toupper(ctxt->input->cur[(val)]))
304:
305: #define CUR_PTR ctxt->input->cur
306:
307: #define SHRINK if ((ctxt->input->cur - ctxt->input->base > 2 * INPUT_CHUNK) && \
308: (ctxt->input->end - ctxt->input->cur < 2 * INPUT_CHUNK)) \
309: xmlParserInputShrink(ctxt->input)
310:
311: #define GROW if ((ctxt->progressive == 0) && \
312: (ctxt->input->end - ctxt->input->cur < INPUT_CHUNK)) \
313: xmlParserInputGrow(ctxt->input, INPUT_CHUNK)
314:
315: #define CURRENT ((int) (*ctxt->input->cur))
316:
317: #define SKIP_BLANKS htmlSkipBlankChars(ctxt)
318:
319: /* Inported from XML */
320:
321: /* #define CUR (ctxt->token ? ctxt->token : (int) (*ctxt->input->cur)) */
322: #define CUR ((int) (*ctxt->input->cur))
323: #define NEXT xmlNextChar(ctxt)
324:
325: #define RAW (ctxt->token ? -1 : (*ctxt->input->cur))
326:
327:
328: #define NEXTL(l) do { \
329: if (*(ctxt->input->cur) == '\n') { \
330: ctxt->input->line++; ctxt->input->col = 1; \
331: } else ctxt->input->col++; \
332: ctxt->token = 0; ctxt->input->cur += l; ctxt->nbChars++; \
333: } while (0)
334:
335: /************
336: \
337: if (*ctxt->input->cur == '%') xmlParserHandlePEReference(ctxt); \
338: if (*ctxt->input->cur == '&') xmlParserHandleReference(ctxt);
339: ************/
340:
341: #define CUR_CHAR(l) htmlCurrentChar(ctxt, &l)
342: #define CUR_SCHAR(s, l) xmlStringCurrentChar(ctxt, s, &l)
343:
344: #define COPY_BUF(l,b,i,v) \
345: if (l == 1) b[i++] = (xmlChar) v; \
346: else i += xmlCopyChar(l,&b[i],v)
347:
348: /**
349: * htmlFindEncoding:
350: * @the HTML parser context
351: *
352: * Ty to find and encoding in the current data available in the input
353: * buffer this is needed to try to switch to the proper encoding when
354: * one face a character error.
355: * That's an heuristic, since it's operating outside of parsing it could
356: * try to use a meta which had been commented out, that's the reason it
357: * should only be used in case of error, not as a default.
358: *
359: * Returns an encoding string or NULL if not found, the string need to
360: * be freed
361: */
362: static xmlChar *
363: htmlFindEncoding(xmlParserCtxtPtr ctxt) {
364: const xmlChar *start, *cur, *end;
365:
366: if ((ctxt == NULL) || (ctxt->input == NULL) ||
367: (ctxt->input->encoding != NULL) || (ctxt->input->buf == NULL) ||
368: (ctxt->input->buf->encoder != NULL))
369: return(NULL);
370: if ((ctxt->input->cur == NULL) || (ctxt->input->end == NULL))
371: return(NULL);
372:
373: start = ctxt->input->cur;
374: end = ctxt->input->end;
375: /* we also expect the input buffer to be zero terminated */
376: if (*end != 0)
377: return(NULL);
378:
379: cur = xmlStrcasestr(start, BAD_CAST "HTTP-EQUIV");
380: if (cur == NULL)
381: return(NULL);
382: cur = xmlStrcasestr(cur, BAD_CAST "CONTENT");
383: if (cur == NULL)
384: return(NULL);
385: cur = xmlStrcasestr(cur, BAD_CAST "CHARSET=");
386: if (cur == NULL)
387: return(NULL);
388: cur += 8;
389: start = cur;
390: while (((*cur >= 'A') && (*cur <= 'Z')) ||
391: ((*cur >= 'a') && (*cur <= 'z')) ||
392: ((*cur >= '0') && (*cur <= '9')) ||
393: (*cur == '-') || (*cur == '_') || (*cur == ':') || (*cur == '/'))
394: cur++;
395: if (cur == start)
396: return(NULL);
397: return(xmlStrndup(start, cur - start));
398: }
399:
400: /**
401: * htmlCurrentChar:
402: * @ctxt: the HTML parser context
403: * @len: pointer to the length of the char read
404: *
405: * The current char value, if using UTF-8 this may actually span multiple
406: * bytes in the input buffer. Implement the end of line normalization:
407: * 2.11 End-of-Line Handling
408: * If the encoding is unspecified, in the case we find an ISO-Latin-1
409: * char, then the encoding converter is plugged in automatically.
410: *
411: * Returns the current char value and its length
412: */
413:
414: static int
415: htmlCurrentChar(xmlParserCtxtPtr ctxt, int *len) {
416: if (ctxt->instate == XML_PARSER_EOF)
417: return(0);
418:
419: if (ctxt->token != 0) {
420: *len = 0;
421: return(ctxt->token);
422: }
423: if (ctxt->charset == XML_CHAR_ENCODING_UTF8) {
424: /*
425: * We are supposed to handle UTF8, check it's valid
426: * From rfc2044: encoding of the Unicode values on UTF-8:
427: *
428: * UCS-4 range (hex.) UTF-8 octet sequence (binary)
429: * 0000 0000-0000 007F 0xxxxxxx
430: * 0000 0080-0000 07FF 110xxxxx 10xxxxxx
431: * 0000 0800-0000 FFFF 1110xxxx 10xxxxxx 10xxxxxx
432: *
433: * Check for the 0x110000 limit too
434: */
435: const unsigned char *cur = ctxt->input->cur;
436: unsigned char c;
437: unsigned int val;
438:
439: c = *cur;
440: if (c & 0x80) {
441: if (cur[1] == 0) {
442: xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
443: cur = ctxt->input->cur;
444: }
445: if ((cur[1] & 0xc0) != 0x80)
446: goto encoding_error;
447: if ((c & 0xe0) == 0xe0) {
448:
449: if (cur[2] == 0) {
450: xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
451: cur = ctxt->input->cur;
452: }
453: if ((cur[2] & 0xc0) != 0x80)
454: goto encoding_error;
455: if ((c & 0xf0) == 0xf0) {
456: if (cur[3] == 0) {
457: xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
458: cur = ctxt->input->cur;
459: }
460: if (((c & 0xf8) != 0xf0) ||
461: ((cur[3] & 0xc0) != 0x80))
462: goto encoding_error;
463: /* 4-byte code */
464: *len = 4;
465: val = (cur[0] & 0x7) << 18;
466: val |= (cur[1] & 0x3f) << 12;
467: val |= (cur[2] & 0x3f) << 6;
468: val |= cur[3] & 0x3f;
469: } else {
470: /* 3-byte code */
471: *len = 3;
472: val = (cur[0] & 0xf) << 12;
473: val |= (cur[1] & 0x3f) << 6;
474: val |= cur[2] & 0x3f;
475: }
476: } else {
477: /* 2-byte code */
478: *len = 2;
479: val = (cur[0] & 0x1f) << 6;
480: val |= cur[1] & 0x3f;
481: }
482: if (!IS_CHAR(val)) {
483: htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
484: "Char 0x%X out of allowed range\n", val);
485: }
486: return(val);
487: } else {
488: if ((*ctxt->input->cur == 0) &&
489: (ctxt->input->cur < ctxt->input->end)) {
490: htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
491: "Char 0x%X out of allowed range\n", 0);
492: *len = 1;
493: return(' ');
494: }
495: /* 1-byte code */
496: *len = 1;
497: return((int) *ctxt->input->cur);
498: }
499: }
500: /*
501: * Assume it's a fixed length encoding (1) with
502: * a compatible encoding for the ASCII set, since
503: * XML constructs only use < 128 chars
504: */
505: *len = 1;
506: if ((int) *ctxt->input->cur < 0x80)
507: return((int) *ctxt->input->cur);
508:
509: /*
510: * Humm this is bad, do an automatic flow conversion
511: */
512: {
513: xmlChar * guess;
514: xmlCharEncodingHandlerPtr handler;
515:
516: guess = htmlFindEncoding(ctxt);
517: if (guess == NULL) {
518: xmlSwitchEncoding(ctxt, XML_CHAR_ENCODING_8859_1);
519: } else {
520: if (ctxt->input->encoding != NULL)
521: xmlFree((xmlChar *) ctxt->input->encoding);
522: ctxt->input->encoding = guess;
523: handler = xmlFindCharEncodingHandler((const char *) guess);
524: if (handler != NULL) {
525: xmlSwitchToEncoding(ctxt, handler);
526: } else {
527: htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
528: "Unsupported encoding %s", guess, NULL);
529: }
530: }
531: ctxt->charset = XML_CHAR_ENCODING_UTF8;
532: }
533:
534: return(xmlCurrentChar(ctxt, len));
535:
536: encoding_error:
537: /*
538: * If we detect an UTF8 error that probably mean that the
539: * input encoding didn't get properly advertized in the
540: * declaration header. Report the error and switch the encoding
541: * to ISO-Latin-1 (if you don't like this policy, just declare the
542: * encoding !)
543: */
544: {
545: char buffer[150];
546:
547: if (ctxt->input->end - ctxt->input->cur >= 4) {
548: snprintf(buffer, 149, "Bytes: 0x%02X 0x%02X 0x%02X 0x%02X\n",
549: ctxt->input->cur[0], ctxt->input->cur[1],
550: ctxt->input->cur[2], ctxt->input->cur[3]);
551: } else {
552: snprintf(buffer, 149, "Bytes: 0x%02X\n", ctxt->input->cur[0]);
553: }
554: htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
555: "Input is not proper UTF-8, indicate encoding !\n",
556: BAD_CAST buffer, NULL);
557: }
558:
559: ctxt->charset = XML_CHAR_ENCODING_8859_1;
560: *len = 1;
561: return((int) *ctxt->input->cur);
562: }
563:
564: /**
565: * htmlSkipBlankChars:
566: * @ctxt: the HTML parser context
567: *
568: * skip all blanks character found at that point in the input streams.
569: *
570: * Returns the number of space chars skipped
571: */
572:
573: static int
574: htmlSkipBlankChars(xmlParserCtxtPtr ctxt) {
575: int res = 0;
576:
577: while (IS_BLANK_CH(*(ctxt->input->cur))) {
578: if ((*ctxt->input->cur == 0) &&
579: (xmlParserInputGrow(ctxt->input, INPUT_CHUNK) <= 0)) {
580: xmlPopInput(ctxt);
581: } else {
582: if (*(ctxt->input->cur) == '\n') {
583: ctxt->input->line++; ctxt->input->col = 1;
584: } else ctxt->input->col++;
585: ctxt->input->cur++;
586: ctxt->nbChars++;
587: if (*ctxt->input->cur == 0)
588: xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
589: }
590: res++;
591: }
592: return(res);
593: }
594:
595:
596:
597: /************************************************************************
598: * *
599: * The list of HTML elements and their properties *
600: * *
601: ************************************************************************/
602:
603: /*
604: * Start Tag: 1 means the start tag can be ommited
605: * End Tag: 1 means the end tag can be ommited
606: * 2 means it's forbidden (empty elements)
607: * 3 means the tag is stylistic and should be closed easily
608: * Depr: this element is deprecated
609: * DTD: 1 means that this element is valid only in the Loose DTD
610: * 2 means that this element is valid only in the Frameset DTD
611: *
612: * Name,Start Tag,End Tag,Save End,Empty,Deprecated,DTD,inline,Description
613: , subElements , impliedsubelt , Attributes, userdata
614: */
615:
616: /* Definitions and a couple of vars for HTML Elements */
617:
618: #define FONTSTYLE "tt", "i", "b", "u", "s", "strike", "big", "small"
619: #define NB_FONTSTYLE 8
620: #define PHRASE "em", "strong", "dfn", "code", "samp", "kbd", "var", "cite", "abbr", "acronym"
621: #define NB_PHRASE 10
622: #define SPECIAL "a", "img", "applet", "embed", "object", "font", "basefont", "br", "script", "map", "q", "sub", "sup", "span", "bdo", "iframe"
623: #define NB_SPECIAL 16
624: #define INLINE FONTSTYLE, PHRASE, SPECIAL, FORMCTRL
625: #define NB_INLINE NB_PCDATA + NB_FONTSTYLE + NB_PHRASE + NB_SPECIAL + NB_FORMCTRL
626: #define BLOCK HEADING, LIST, "pre", "p", "dl", "div", "center", "noscript", "noframes", "blockquote", "form", "isindex", "hr", "table", "fieldset", "address"
627: #define NB_BLOCK NB_HEADING + NB_LIST + 14
628: #define FORMCTRL "input", "select", "textarea", "label", "button"
629: #define NB_FORMCTRL 5
630: #define PCDATA
631: #define NB_PCDATA 0
632: #define HEADING "h1", "h2", "h3", "h4", "h5", "h6"
633: #define NB_HEADING 6
634: #define LIST "ul", "ol", "dir", "menu"
635: #define NB_LIST 4
636: #define MODIFIER
637: #define NB_MODIFIER 0
638: #define FLOW BLOCK,INLINE
639: #define NB_FLOW NB_BLOCK + NB_INLINE
640: #define EMPTY NULL
641:
642:
643: static const char* const html_flow[] = { FLOW, NULL } ;
644: static const char* const html_inline[] = { INLINE, NULL } ;
645:
646: /* placeholders: elts with content but no subelements */
647: static const char* const html_pcdata[] = { NULL } ;
648: #define html_cdata html_pcdata
649:
650:
651: /* ... and for HTML Attributes */
652:
653: #define COREATTRS "id", "class", "style", "title"
654: #define NB_COREATTRS 4
655: #define I18N "lang", "dir"
656: #define NB_I18N 2
657: #define EVENTS "onclick", "ondblclick", "onmousedown", "onmouseup", "onmouseover", "onmouseout", "onkeypress", "onkeydown", "onkeyup"
658: #define NB_EVENTS 9
659: #define ATTRS COREATTRS,I18N,EVENTS
660: #define NB_ATTRS NB_NB_COREATTRS + NB_I18N + NB_EVENTS
661: #define CELLHALIGN "align", "char", "charoff"
662: #define NB_CELLHALIGN 3
663: #define CELLVALIGN "valign"
664: #define NB_CELLVALIGN 1
665:
666: static const char* const html_attrs[] = { ATTRS, NULL } ;
667: static const char* const core_i18n_attrs[] = { COREATTRS, I18N, NULL } ;
668: static const char* const core_attrs[] = { COREATTRS, NULL } ;
669: static const char* const i18n_attrs[] = { I18N, NULL } ;
670:
671:
672: /* Other declarations that should go inline ... */
673: static const char* const a_attrs[] = { ATTRS, "charset", "type", "name",
674: "href", "hreflang", "rel", "rev", "accesskey", "shape", "coords",
675: "tabindex", "onfocus", "onblur", NULL } ;
676: static const char* const target_attr[] = { "target", NULL } ;
677: static const char* const rows_cols_attr[] = { "rows", "cols", NULL } ;
678: static const char* const alt_attr[] = { "alt", NULL } ;
679: static const char* const src_alt_attrs[] = { "src", "alt", NULL } ;
680: static const char* const href_attrs[] = { "href", NULL } ;
681: static const char* const clear_attrs[] = { "clear", NULL } ;
682: static const char* const inline_p[] = { INLINE, "p", NULL } ;
683:
684: static const char* const flow_param[] = { FLOW, "param", NULL } ;
685: static const char* const applet_attrs[] = { COREATTRS , "codebase",
686: "archive", "alt", "name", "height", "width", "align",
687: "hspace", "vspace", NULL } ;
688: static const char* const area_attrs[] = { "shape", "coords", "href", "nohref",
689: "tabindex", "accesskey", "onfocus", "onblur", NULL } ;
690: static const char* const basefont_attrs[] =
691: { "id", "size", "color", "face", NULL } ;
692: static const char* const quote_attrs[] = { ATTRS, "cite", NULL } ;
693: static const char* const body_contents[] = { FLOW, "ins", "del", NULL } ;
694: static const char* const body_attrs[] = { ATTRS, "onload", "onunload", NULL } ;
695: static const char* const body_depr[] = { "background", "bgcolor", "text",
696: "link", "vlink", "alink", NULL } ;
697: static const char* const button_attrs[] = { ATTRS, "name", "value", "type",
698: "disabled", "tabindex", "accesskey", "onfocus", "onblur", NULL } ;
699:
700:
701: static const char* const col_attrs[] = { ATTRS, "span", "width", CELLHALIGN, CELLVALIGN, NULL } ;
702: static const char* const col_elt[] = { "col", NULL } ;
703: static const char* const edit_attrs[] = { ATTRS, "datetime", "cite", NULL } ;
704: static const char* const compact_attrs[] = { ATTRS, "compact", NULL } ;
705: static const char* const dl_contents[] = { "dt", "dd", NULL } ;
706: static const char* const compact_attr[] = { "compact", NULL } ;
707: static const char* const label_attr[] = { "label", NULL } ;
708: static const char* const fieldset_contents[] = { FLOW, "legend" } ;
709: static const char* const font_attrs[] = { COREATTRS, I18N, "size", "color", "face" , NULL } ;
710: static const char* const form_contents[] = { HEADING, LIST, INLINE, "pre", "p", "div", "center", "noscript", "noframes", "blockquote", "isindex", "hr", "table", "fieldset", "address", NULL } ;
711: static const char* const form_attrs[] = { ATTRS, "method", "enctype", "accept", "name", "onsubmit", "onreset", "accept-charset", NULL } ;
712: static const char* const frame_attrs[] = { COREATTRS, "longdesc", "name", "src", "frameborder", "marginwidth", "marginheight", "noresize", "scrolling" , NULL } ;
713: static const char* const frameset_attrs[] = { COREATTRS, "rows", "cols", "onload", "onunload", NULL } ;
714: static const char* const frameset_contents[] = { "frameset", "frame", "noframes", NULL } ;
715: static const char* const head_attrs[] = { I18N, "profile", NULL } ;
716: static const char* const head_contents[] = { "title", "isindex", "base", "script", "style", "meta", "link", "object", NULL } ;
717: static const char* const hr_depr[] = { "align", "noshade", "size", "width", NULL } ;
718: static const char* const version_attr[] = { "version", NULL } ;
719: static const char* const html_content[] = { "head", "body", "frameset", NULL } ;
720: static const char* const iframe_attrs[] = { COREATTRS, "longdesc", "name", "src", "frameborder", "marginwidth", "marginheight", "scrolling", "align", "height", "width", NULL } ;
721: static const char* const img_attrs[] = { ATTRS, "longdesc", "name", "height", "width", "usemap", "ismap", NULL } ;
722: 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 } ;
723: 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 } ;
724: static const char* const prompt_attrs[] = { COREATTRS, I18N, "prompt", NULL } ;
725: static const char* const label_attrs[] = { ATTRS, "for", "accesskey", "onfocus", "onblur", NULL } ;
726: static const char* const legend_attrs[] = { ATTRS, "accesskey", NULL } ;
727: static const char* const align_attr[] = { "align", NULL } ;
728: static const char* const link_attrs[] = { ATTRS, "charset", "href", "hreflang", "type", "rel", "rev", "media", NULL } ;
729: static const char* const map_contents[] = { BLOCK, "area", NULL } ;
730: static const char* const name_attr[] = { "name", NULL } ;
731: static const char* const action_attr[] = { "action", NULL } ;
732: static const char* const blockli_elt[] = { BLOCK, "li", NULL } ;
733: static const char* const meta_attrs[] = { I18N, "http-equiv", "name", "scheme", "charset", NULL } ;
734: static const char* const content_attr[] = { "content", NULL } ;
735: static const char* const type_attr[] = { "type", NULL } ;
736: static const char* const noframes_content[] = { "body", FLOW MODIFIER, NULL } ;
737: static const char* const object_contents[] = { FLOW, "param", NULL } ;
738: static const char* const object_attrs[] = { ATTRS, "declare", "classid", "codebase", "data", "type", "codetype", "archive", "standby", "height", "width", "usemap", "name", "tabindex", NULL } ;
739: static const char* const object_depr[] = { "align", "border", "hspace", "vspace", NULL } ;
740: static const char* const ol_attrs[] = { "type", "compact", "start", NULL} ;
741: static const char* const option_elt[] = { "option", NULL } ;
742: static const char* const optgroup_attrs[] = { ATTRS, "disabled", NULL } ;
743: static const char* const option_attrs[] = { ATTRS, "disabled", "label", "selected", "value", NULL } ;
744: static const char* const param_attrs[] = { "id", "value", "valuetype", "type", NULL } ;
745: static const char* const width_attr[] = { "width", NULL } ;
746: static const char* const pre_content[] = { PHRASE, "tt", "i", "b", "u", "s", "strike", "a", "br", "script", "map", "q", "span", "bdo", "iframe", NULL } ;
747: static const char* const script_attrs[] = { "charset", "src", "defer", "event", "for", NULL } ;
748: static const char* const language_attr[] = { "language", NULL } ;
749: static const char* const select_content[] = { "optgroup", "option", NULL } ;
750: static const char* const select_attrs[] = { ATTRS, "name", "size", "multiple", "disabled", "tabindex", "onfocus", "onblur", "onchange", NULL } ;
751: static const char* const style_attrs[] = { I18N, "media", "title", NULL } ;
752: static const char* const table_attrs[] = { ATTRS, "summary", "width", "border", "frame", "rules", "cellspacing", "cellpadding", "datapagesize", NULL } ;
753: static const char* const table_depr[] = { "align", "bgcolor", NULL } ;
754: static const char* const table_contents[] = { "caption", "col", "colgroup", "thead", "tfoot", "tbody", "tr", NULL} ;
755: static const char* const tr_elt[] = { "tr", NULL } ;
756: static const char* const talign_attrs[] = { ATTRS, CELLHALIGN, CELLVALIGN, NULL} ;
757: static const char* const th_td_depr[] = { "nowrap", "bgcolor", "width", "height", NULL } ;
758: static const char* const th_td_attr[] = { ATTRS, "abbr", "axis", "headers", "scope", "rowspan", "colspan", CELLHALIGN, CELLVALIGN, NULL } ;
759: static const char* const textarea_attrs[] = { ATTRS, "name", "disabled", "readonly", "tabindex", "accesskey", "onfocus", "onblur", "onselect", "onchange", NULL } ;
760: static const char* const tr_contents[] = { "th", "td", NULL } ;
761: static const char* const bgcolor_attr[] = { "bgcolor", NULL } ;
762: static const char* const li_elt[] = { "li", NULL } ;
763: static const char* const ul_depr[] = { "type", "compact", NULL} ;
764: static const char* const dir_attr[] = { "dir", NULL} ;
765:
766: #define DECL (const char**)
767:
768: static const htmlElemDesc
769: html40ElementTable[] = {
770: { "a", 0, 0, 0, 0, 0, 0, 1, "anchor ",
771: DECL html_inline , NULL , DECL a_attrs , DECL target_attr, NULL
772: },
773: { "abbr", 0, 0, 0, 0, 0, 0, 1, "abbreviated form",
774: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
775: },
776: { "acronym", 0, 0, 0, 0, 0, 0, 1, "",
777: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
778: },
779: { "address", 0, 0, 0, 0, 0, 0, 0, "information on author ",
780: DECL inline_p , NULL , DECL html_attrs, NULL, NULL
781: },
782: { "applet", 0, 0, 0, 0, 1, 1, 2, "java applet ",
783: DECL flow_param , NULL , NULL , DECL applet_attrs, NULL
784: },
785: { "area", 0, 2, 2, 1, 0, 0, 0, "client-side image map area ",
786: EMPTY , NULL , DECL area_attrs , DECL target_attr, DECL alt_attr
787: },
788: { "b", 0, 3, 0, 0, 0, 0, 1, "bold text style",
789: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
790: },
791: { "base", 0, 2, 2, 1, 0, 0, 0, "document base uri ",
792: EMPTY , NULL , NULL , DECL target_attr, DECL href_attrs
793: },
794: { "basefont", 0, 2, 2, 1, 1, 1, 1, "base font size " ,
795: EMPTY , NULL , NULL, DECL basefont_attrs, NULL
796: },
797: { "bdo", 0, 0, 0, 0, 0, 0, 1, "i18n bidi over-ride ",
798: DECL html_inline , NULL , DECL core_i18n_attrs, NULL, DECL dir_attr
799: },
800: { "big", 0, 3, 0, 0, 0, 0, 1, "large text style",
801: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
802: },
803: { "blockquote", 0, 0, 0, 0, 0, 0, 0, "long quotation ",
804: DECL html_flow , NULL , DECL quote_attrs , NULL, NULL
805: },
806: { "body", 1, 1, 0, 0, 0, 0, 0, "document body ",
807: DECL body_contents , "div" , DECL body_attrs, DECL body_depr, NULL
808: },
809: { "br", 0, 2, 2, 1, 0, 0, 1, "forced line break ",
810: EMPTY , NULL , DECL core_attrs, DECL clear_attrs , NULL
811: },
812: { "button", 0, 0, 0, 0, 0, 0, 2, "push button ",
813: DECL html_flow MODIFIER , NULL , DECL button_attrs, NULL, NULL
814: },
815: { "caption", 0, 0, 0, 0, 0, 0, 0, "table caption ",
816: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
817: },
818: { "center", 0, 3, 0, 0, 1, 1, 0, "shorthand for div align=center ",
819: DECL html_flow , NULL , NULL, DECL html_attrs, NULL
820: },
821: { "cite", 0, 0, 0, 0, 0, 0, 1, "citation",
822: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
823: },
824: { "code", 0, 0, 0, 0, 0, 0, 1, "computer code fragment",
825: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
826: },
827: { "col", 0, 2, 2, 1, 0, 0, 0, "table column ",
828: EMPTY , NULL , DECL col_attrs , NULL, NULL
829: },
830: { "colgroup", 0, 1, 0, 0, 0, 0, 0, "table column group ",
831: DECL col_elt , "col" , DECL col_attrs , NULL, NULL
832: },
833: { "dd", 0, 1, 0, 0, 0, 0, 0, "definition description ",
834: DECL html_flow , NULL , DECL html_attrs, NULL, NULL
835: },
836: { "del", 0, 0, 0, 0, 0, 0, 2, "deleted text ",
837: DECL html_flow , NULL , DECL edit_attrs , NULL, NULL
838: },
839: { "dfn", 0, 0, 0, 0, 0, 0, 1, "instance definition",
840: DECL html_inline , NULL , DECL html_attrs, NULL, NULL
841: },
842: { "dir", 0, 0, 0, 0, 1, 1, 0, "directory list",
843: DECL blockli_elt, "li" , NULL, DECL compact_attrs, NULL
844: },
845: { "div", 0, 0, 0, 0, 0, 0, 0, "generic language/style container",
846: DECL html_flow, NULL, DECL html_attrs, DECL align_attr, NULL
847: },
848: { "dl", 0, 0, 0, 0, 0, 0, 0, "definition list ",
849: DECL dl_contents , "dd" , DECL html_attrs, DECL compact_attr, NULL
850: },
851: { "dt", 0, 1, 0, 0, 0, 0, 0, "definition term ",
852: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
853: },
854: { "em", 0, 3, 0, 0, 0, 0, 1, "emphasis",
855: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
856: },
857: { "embed", 0, 1, 0, 0, 1, 1, 1, "generic embedded object ",
858: EMPTY, NULL, DECL embed_attrs, NULL, NULL
859: },
860: { "fieldset", 0, 0, 0, 0, 0, 0, 0, "form control group ",
861: DECL fieldset_contents , NULL, DECL html_attrs, NULL, NULL
862: },
863: { "font", 0, 3, 0, 0, 1, 1, 1, "local change to font ",
864: DECL html_inline, NULL, NULL, DECL font_attrs, NULL
865: },
866: { "form", 0, 0, 0, 0, 0, 0, 0, "interactive form ",
867: DECL form_contents, "fieldset", DECL form_attrs , DECL target_attr, DECL action_attr
868: },
869: { "frame", 0, 2, 2, 1, 0, 2, 0, "subwindow " ,
870: EMPTY, NULL, NULL, DECL frame_attrs, NULL
871: },
872: { "frameset", 0, 0, 0, 0, 0, 2, 0, "window subdivision" ,
873: DECL frameset_contents, "noframes" , NULL , DECL frameset_attrs, NULL
874: },
875: { "h1", 0, 0, 0, 0, 0, 0, 0, "heading ",
876: DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
877: },
878: { "h2", 0, 0, 0, 0, 0, 0, 0, "heading ",
879: DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
880: },
881: { "h3", 0, 0, 0, 0, 0, 0, 0, "heading ",
882: DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
883: },
884: { "h4", 0, 0, 0, 0, 0, 0, 0, "heading ",
885: DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
886: },
887: { "h5", 0, 0, 0, 0, 0, 0, 0, "heading ",
888: DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
889: },
890: { "h6", 0, 0, 0, 0, 0, 0, 0, "heading ",
891: DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
892: },
893: { "head", 1, 1, 0, 0, 0, 0, 0, "document head ",
894: DECL head_contents, NULL, DECL head_attrs, NULL, NULL
895: },
896: { "hr", 0, 2, 2, 1, 0, 0, 0, "horizontal rule " ,
897: EMPTY, NULL, DECL html_attrs, DECL hr_depr, NULL
898: },
899: { "html", 1, 1, 0, 0, 0, 0, 0, "document root element ",
900: DECL html_content , NULL , DECL i18n_attrs, DECL version_attr, NULL
901: },
902: { "i", 0, 3, 0, 0, 0, 0, 1, "italic text style",
903: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
904: },
905: { "iframe", 0, 0, 0, 0, 0, 1, 2, "inline subwindow ",
906: DECL html_flow, NULL, NULL, DECL iframe_attrs, NULL
907: },
908: { "img", 0, 2, 2, 1, 0, 0, 1, "embedded image ",
909: EMPTY, NULL, DECL img_attrs, DECL align_attr, DECL src_alt_attrs
910: },
911: { "input", 0, 2, 2, 1, 0, 0, 1, "form control ",
912: EMPTY, NULL, DECL input_attrs , DECL align_attr, NULL
913: },
914: { "ins", 0, 0, 0, 0, 0, 0, 2, "inserted text",
915: DECL html_flow, NULL, DECL edit_attrs, NULL, NULL
916: },
917: { "isindex", 0, 2, 2, 1, 1, 1, 0, "single line prompt ",
918: EMPTY, NULL, NULL, DECL prompt_attrs, NULL
919: },
920: { "kbd", 0, 0, 0, 0, 0, 0, 1, "text to be entered by the user",
921: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
922: },
923: { "label", 0, 0, 0, 0, 0, 0, 1, "form field label text ",
924: DECL html_inline MODIFIER, NULL, DECL label_attrs , NULL, NULL
925: },
926: { "legend", 0, 0, 0, 0, 0, 0, 0, "fieldset legend ",
927: DECL html_inline, NULL, DECL legend_attrs , DECL align_attr, NULL
928: },
929: { "li", 0, 1, 1, 0, 0, 0, 0, "list item ",
930: DECL html_flow, NULL, DECL html_attrs, NULL, NULL
931: },
932: { "link", 0, 2, 2, 1, 0, 0, 0, "a media-independent link ",
933: EMPTY, NULL, DECL link_attrs, DECL target_attr, NULL
934: },
935: { "map", 0, 0, 0, 0, 0, 0, 2, "client-side image map ",
936: DECL map_contents , NULL, DECL html_attrs , NULL, DECL name_attr
937: },
938: { "menu", 0, 0, 0, 0, 1, 1, 0, "menu list ",
939: DECL blockli_elt , NULL, NULL, DECL compact_attrs, NULL
940: },
941: { "meta", 0, 2, 2, 1, 0, 0, 0, "generic metainformation ",
942: EMPTY, NULL, DECL meta_attrs , NULL , DECL content_attr
943: },
944: { "noframes", 0, 0, 0, 0, 0, 2, 0, "alternate content container for non frame-based rendering ",
945: DECL noframes_content, "body" , DECL html_attrs, NULL, NULL
946: },
947: { "noscript", 0, 0, 0, 0, 0, 0, 0, "alternate content container for non script-based rendering ",
948: DECL html_flow, "div", DECL html_attrs, NULL, NULL
949: },
950: { "object", 0, 0, 0, 0, 0, 0, 2, "generic embedded object ",
951: DECL object_contents , "div" , DECL object_attrs, DECL object_depr, NULL
952: },
953: { "ol", 0, 0, 0, 0, 0, 0, 0, "ordered list ",
954: DECL li_elt , "li" , DECL html_attrs, DECL ol_attrs, NULL
955: },
956: { "optgroup", 0, 0, 0, 0, 0, 0, 0, "option group ",
957: DECL option_elt , "option", DECL optgroup_attrs, NULL, DECL label_attr
958: },
959: { "option", 0, 1, 0, 0, 0, 0, 0, "selectable choice " ,
960: DECL html_pcdata, NULL, DECL option_attrs, NULL, NULL
961: },
962: { "p", 0, 1, 0, 0, 0, 0, 0, "paragraph ",
963: DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
964: },
965: { "param", 0, 2, 2, 1, 0, 0, 0, "named property value ",
966: EMPTY, NULL, DECL param_attrs, NULL, DECL name_attr
967: },
968: { "pre", 0, 0, 0, 0, 0, 0, 0, "preformatted text ",
969: DECL pre_content, NULL, DECL html_attrs, DECL width_attr, NULL
970: },
971: { "q", 0, 0, 0, 0, 0, 0, 1, "short inline quotation ",
972: DECL html_inline, NULL, DECL quote_attrs, NULL, NULL
973: },
974: { "s", 0, 3, 0, 0, 1, 1, 1, "strike-through text style",
975: DECL html_inline, NULL, NULL, DECL html_attrs, NULL
976: },
977: { "samp", 0, 0, 0, 0, 0, 0, 1, "sample program output, scripts, etc.",
978: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
979: },
980: { "script", 0, 0, 0, 0, 0, 0, 2, "script statements ",
981: DECL html_cdata, NULL, DECL script_attrs, DECL language_attr, DECL type_attr
982: },
983: { "select", 0, 0, 0, 0, 0, 0, 1, "option selector ",
984: DECL select_content, NULL, DECL select_attrs, NULL, NULL
985: },
986: { "small", 0, 3, 0, 0, 0, 0, 1, "small text style",
987: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
988: },
989: { "span", 0, 0, 0, 0, 0, 0, 1, "generic language/style container ",
990: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
991: },
992: { "strike", 0, 3, 0, 0, 1, 1, 1, "strike-through text",
993: DECL html_inline, NULL, NULL, DECL html_attrs, NULL
994: },
995: { "strong", 0, 3, 0, 0, 0, 0, 1, "strong emphasis",
996: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
997: },
998: { "style", 0, 0, 0, 0, 0, 0, 0, "style info ",
999: DECL html_cdata, NULL, DECL style_attrs, NULL, DECL type_attr
1000: },
1001: { "sub", 0, 3, 0, 0, 0, 0, 1, "subscript",
1002: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
1003: },
1004: { "sup", 0, 3, 0, 0, 0, 0, 1, "superscript ",
1005: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
1006: },
1007: { "table", 0, 0, 0, 0, 0, 0, 0, "",
1008: DECL table_contents , "tr" , DECL table_attrs , DECL table_depr, NULL
1009: },
1010: { "tbody", 1, 0, 0, 0, 0, 0, 0, "table body ",
1011: DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL
1012: },
1013: { "td", 0, 0, 0, 0, 0, 0, 0, "table data cell",
1014: DECL html_flow, NULL, DECL th_td_attr, DECL th_td_depr, NULL
1015: },
1016: { "textarea", 0, 0, 0, 0, 0, 0, 1, "multi-line text field ",
1017: DECL html_pcdata, NULL, DECL textarea_attrs, NULL, DECL rows_cols_attr
1018: },
1019: { "tfoot", 0, 1, 0, 0, 0, 0, 0, "table footer ",
1020: DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL
1021: },
1022: { "th", 0, 1, 0, 0, 0, 0, 0, "table header cell",
1023: DECL html_flow, NULL, DECL th_td_attr, DECL th_td_depr, NULL
1024: },
1025: { "thead", 0, 1, 0, 0, 0, 0, 0, "table header ",
1026: DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL
1027: },
1028: { "title", 0, 0, 0, 0, 0, 0, 0, "document title ",
1029: DECL html_pcdata, NULL, DECL i18n_attrs, NULL, NULL
1030: },
1031: { "tr", 0, 0, 0, 0, 0, 0, 0, "table row ",
1032: DECL tr_contents , "td" , DECL talign_attrs, DECL bgcolor_attr, NULL
1033: },
1034: { "tt", 0, 3, 0, 0, 0, 0, 1, "teletype or monospaced text style",
1035: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
1036: },
1037: { "u", 0, 3, 0, 0, 1, 1, 1, "underlined text style",
1038: DECL html_inline, NULL, NULL, DECL html_attrs, NULL
1039: },
1040: { "ul", 0, 0, 0, 0, 0, 0, 0, "unordered list ",
1041: DECL li_elt , "li" , DECL html_attrs, DECL ul_depr, NULL
1042: },
1043: { "var", 0, 0, 0, 0, 0, 0, 1, "instance of a variable or program argument",
1044: DECL html_inline, NULL, DECL html_attrs, NULL, NULL
1045: }
1046: };
1047:
1048: /*
1049: * start tags that imply the end of current element
1050: */
1051: static const char * const htmlStartClose[] = {
1052: "form", "form", "p", "hr", "h1", "h2", "h3", "h4", "h5", "h6",
1053: "dl", "ul", "ol", "menu", "dir", "address", "pre",
1054: "listing", "xmp", "head", NULL,
1055: "head", "p", NULL,
1056: "title", "p", NULL,
1057: "body", "head", "style", "link", "title", "p", NULL,
1058: "frameset", "head", "style", "link", "title", "p", NULL,
1059: "li", "p", "h1", "h2", "h3", "h4", "h5", "h6", "dl", "address",
1060: "pre", "listing", "xmp", "head", "li", NULL,
1061: "hr", "p", "head", NULL,
1062: "h1", "p", "head", NULL,
1063: "h2", "p", "head", NULL,
1064: "h3", "p", "head", NULL,
1065: "h4", "p", "head", NULL,
1066: "h5", "p", "head", NULL,
1067: "h6", "p", "head", NULL,
1068: "dir", "p", "head", NULL,
1069: "address", "p", "head", "ul", NULL,
1070: "pre", "p", "head", "ul", NULL,
1071: "listing", "p", "head", NULL,
1072: "xmp", "p", "head", NULL,
1073: "blockquote", "p", "head", NULL,
1074: "dl", "p", "dt", "menu", "dir", "address", "pre", "listing",
1075: "xmp", "head", NULL,
1076: "dt", "p", "menu", "dir", "address", "pre", "listing", "xmp",
1077: "head", "dd", NULL,
1078: "dd", "p", "menu", "dir", "address", "pre", "listing", "xmp",
1079: "head", "dt", NULL,
1080: "ul", "p", "head", "ol", "menu", "dir", "address", "pre",
1081: "listing", "xmp", NULL,
1082: "ol", "p", "head", "ul", NULL,
1083: "menu", "p", "head", "ul", NULL,
1084: "p", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6", FONTSTYLE, NULL,
1085: "div", "p", "head", NULL,
1086: "noscript", "p", NULL,
1087: "center", "font", "b", "i", "p", "head", NULL,
1088: "a", "a", "head", NULL,
1089: "caption", "p", NULL,
1090: "colgroup", "caption", "colgroup", "col", "p", NULL,
1091: "col", "caption", "col", "p", NULL,
1092: "table", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6", "pre",
1093: "listing", "xmp", "a", NULL,
1094: "th", "th", "td", "p", "span", "font", "a", "b", "i", "u", NULL,
1095: "td", "th", "td", "p", "span", "font", "a", "b", "i", "u", NULL,
1096: "tr", "th", "td", "tr", "caption", "col", "colgroup", "p", NULL,
1097: "thead", "caption", "col", "colgroup", NULL,
1098: "tfoot", "th", "td", "tr", "caption", "col", "colgroup", "thead",
1099: "tbody", "p", NULL,
1100: "tbody", "th", "td", "tr", "caption", "col", "colgroup", "thead",
1101: "tfoot", "tbody", "p", NULL,
1102: "optgroup", "option", NULL,
1103: "option", "option", NULL,
1104: "fieldset", "legend", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6",
1105: "pre", "listing", "xmp", "a", NULL,
1106: /* most tags in in FONTSTYLE, PHRASE and SPECIAL should close <head> */
1107: "tt", "head", NULL,
1108: "i", "head", NULL,
1109: "b", "head", NULL,
1110: "u", "head", NULL,
1111: "s", "head", NULL,
1112: "strike", "head", NULL,
1113: "big", "head", NULL,
1114: "small", "head", NULL,
1115:
1116: "em", "head", NULL,
1117: "strong", "head", NULL,
1118: "dfn", "head", NULL,
1119: "code", "head", NULL,
1120: "samp", "head", NULL,
1121: "kbd", "head", NULL,
1122: "var", "head", NULL,
1123: "cite", "head", NULL,
1124: "abbr", "head", NULL,
1125: "acronym", "head", NULL,
1126:
1127: /* "a" */
1128: "img", "head", NULL,
1129: /* "applet" */
1130: /* "embed" */
1131: /* "object" */
1132: "font", "head", NULL,
1133: /* "basefont" */
1134: "br", "head", NULL,
1135: /* "script" */
1136: "map", "head", NULL,
1137: "q", "head", NULL,
1138: "sub", "head", NULL,
1139: "sup", "head", NULL,
1140: "span", "head", NULL,
1141: "bdo", "head", NULL,
1142: "iframe", "head", NULL,
1143: NULL
1144: };
1145:
1146: /*
1147: * The list of HTML elements which are supposed not to have
1148: * CDATA content and where a p element will be implied
1149: *
1150: * TODO: extend that list by reading the HTML SGML DTD on
1151: * implied paragraph
1152: */
1153: static const char *const htmlNoContentElements[] = {
1154: "html",
1155: "head",
1156: NULL
1157: };
1158:
1159: /*
1160: * The list of HTML attributes which are of content %Script;
1161: * NOTE: when adding ones, check htmlIsScriptAttribute() since
1162: * it assumes the name starts with 'on'
1163: */
1164: static const char *const htmlScriptAttributes[] = {
1165: "onclick",
1166: "ondblclick",
1167: "onmousedown",
1168: "onmouseup",
1169: "onmouseover",
1170: "onmousemove",
1171: "onmouseout",
1172: "onkeypress",
1173: "onkeydown",
1174: "onkeyup",
1175: "onload",
1176: "onunload",
1177: "onfocus",
1178: "onblur",
1179: "onsubmit",
1180: "onrest",
1181: "onchange",
1182: "onselect"
1183: };
1184:
1185: /*
1186: * This table is used by the htmlparser to know what to do with
1187: * broken html pages. By assigning different priorities to different
1188: * elements the parser can decide how to handle extra endtags.
1189: * Endtags are only allowed to close elements with lower or equal
1190: * priority.
1191: */
1192:
1193: typedef struct {
1194: const char *name;
1195: int priority;
1196: } elementPriority;
1197:
1198: static const elementPriority htmlEndPriority[] = {
1199: {"div", 150},
1200: {"td", 160},
1201: {"th", 160},
1202: {"tr", 170},
1203: {"thead", 180},
1204: {"tbody", 180},
1205: {"tfoot", 180},
1206: {"table", 190},
1207: {"head", 200},
1208: {"body", 200},
1209: {"html", 220},
1210: {NULL, 100} /* Default priority */
1211: };
1212:
1213: static const char** htmlStartCloseIndex[100];
1214: static int htmlStartCloseIndexinitialized = 0;
1215:
1216: /************************************************************************
1217: * *
1218: * functions to handle HTML specific data *
1219: * *
1220: ************************************************************************/
1221:
1222: /**
1223: * htmlInitAutoClose:
1224: *
1225: * Initialize the htmlStartCloseIndex for fast lookup of closing tags names.
1226: * This is not reentrant. Call xmlInitParser() once before processing in
1227: * case of use in multithreaded programs.
1228: */
1229: void
1230: htmlInitAutoClose(void) {
1231: int indx, i = 0;
1232:
1233: if (htmlStartCloseIndexinitialized) return;
1234:
1235: for (indx = 0;indx < 100;indx ++) htmlStartCloseIndex[indx] = NULL;
1236: indx = 0;
1237: while ((htmlStartClose[i] != NULL) && (indx < 100 - 1)) {
1238: htmlStartCloseIndex[indx++] = (const char**) &htmlStartClose[i];
1239: while (htmlStartClose[i] != NULL) i++;
1240: i++;
1241: }
1242: htmlStartCloseIndexinitialized = 1;
1243: }
1244:
1245: /**
1246: * htmlTagLookup:
1247: * @tag: The tag name in lowercase
1248: *
1249: * Lookup the HTML tag in the ElementTable
1250: *
1251: * Returns the related htmlElemDescPtr or NULL if not found.
1252: */
1253: const htmlElemDesc *
1254: htmlTagLookup(const xmlChar *tag) {
1255: unsigned int i;
1256:
1257: for (i = 0; i < (sizeof(html40ElementTable) /
1258: sizeof(html40ElementTable[0]));i++) {
1259: if (!xmlStrcasecmp(tag, BAD_CAST html40ElementTable[i].name))
1260: return((htmlElemDescPtr) &html40ElementTable[i]);
1261: }
1262: return(NULL);
1263: }
1264:
1265: /**
1266: * htmlGetEndPriority:
1267: * @name: The name of the element to look up the priority for.
1268: *
1269: * Return value: The "endtag" priority.
1270: **/
1271: static int
1272: htmlGetEndPriority (const xmlChar *name) {
1273: int i = 0;
1274:
1275: while ((htmlEndPriority[i].name != NULL) &&
1276: (!xmlStrEqual((const xmlChar *)htmlEndPriority[i].name, name)))
1277: i++;
1278:
1279: return(htmlEndPriority[i].priority);
1280: }
1281:
1282:
1283: /**
1284: * htmlCheckAutoClose:
1285: * @newtag: The new tag name
1286: * @oldtag: The old tag name
1287: *
1288: * Checks whether the new tag is one of the registered valid tags for
1289: * closing old.
1290: * Initialize the htmlStartCloseIndex for fast lookup of closing tags names.
1291: *
1292: * Returns 0 if no, 1 if yes.
1293: */
1294: static int
1295: htmlCheckAutoClose(const xmlChar * newtag, const xmlChar * oldtag)
1296: {
1297: int i, indx;
1298: const char **closed = NULL;
1299:
1300: if (htmlStartCloseIndexinitialized == 0)
1301: htmlInitAutoClose();
1302:
1303: /* inefficient, but not a big deal */
1304: for (indx = 0; indx < 100; indx++) {
1305: closed = htmlStartCloseIndex[indx];
1306: if (closed == NULL)
1307: return (0);
1308: if (xmlStrEqual(BAD_CAST * closed, newtag))
1309: break;
1310: }
1311:
1312: i = closed - htmlStartClose;
1313: i++;
1314: while (htmlStartClose[i] != NULL) {
1315: if (xmlStrEqual(BAD_CAST htmlStartClose[i], oldtag)) {
1316: return (1);
1317: }
1318: i++;
1319: }
1320: return (0);
1321: }
1322:
1323: /**
1324: * htmlAutoCloseOnClose:
1325: * @ctxt: an HTML parser context
1326: * @newtag: The new tag name
1327: * @force: force the tag closure
1328: *
1329: * The HTML DTD allows an ending tag to implicitly close other tags.
1330: */
1331: static void
1332: htmlAutoCloseOnClose(htmlParserCtxtPtr ctxt, const xmlChar * newtag)
1333: {
1334: const htmlElemDesc *info;
1335: int i, priority;
1336:
1337: priority = htmlGetEndPriority(newtag);
1338:
1339: for (i = (ctxt->nameNr - 1); i >= 0; i--) {
1340:
1341: if (xmlStrEqual(newtag, ctxt->nameTab[i]))
1342: break;
1343: /*
1344: * A missplaced endtag can only close elements with lower
1345: * or equal priority, so if we find an element with higher
1346: * priority before we find an element with
1347: * matching name, we just ignore this endtag
1348: */
1349: if (htmlGetEndPriority(ctxt->nameTab[i]) > priority)
1350: return;
1351: }
1352: if (i < 0)
1353: return;
1354:
1355: while (!xmlStrEqual(newtag, ctxt->name)) {
1356: info = htmlTagLookup(ctxt->name);
1357: if ((info != NULL) && (info->endTag == 3)) {
1358: htmlParseErr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
1359: "Opening and ending tag mismatch: %s and %s\n",
1360: newtag, ctxt->name);
1361: }
1362: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
1363: ctxt->sax->endElement(ctxt->userData, ctxt->name);
1364: htmlnamePop(ctxt);
1365: }
1366: }
1367:
1368: /**
1369: * htmlAutoCloseOnEnd:
1370: * @ctxt: an HTML parser context
1371: *
1372: * Close all remaining tags at the end of the stream
1373: */
1374: static void
1375: htmlAutoCloseOnEnd(htmlParserCtxtPtr ctxt)
1376: {
1377: int i;
1378:
1379: if (ctxt->nameNr == 0)
1380: return;
1381: for (i = (ctxt->nameNr - 1); i >= 0; i--) {
1382: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
1383: ctxt->sax->endElement(ctxt->userData, ctxt->name);
1384: htmlnamePop(ctxt);
1385: }
1386: }
1387:
1388: /**
1389: * htmlAutoClose:
1390: * @ctxt: an HTML parser context
1391: * @newtag: The new tag name or NULL
1392: *
1393: * The HTML DTD allows a tag to implicitly close other tags.
1394: * The list is kept in htmlStartClose array. This function is
1395: * called when a new tag has been detected and generates the
1396: * appropriates closes if possible/needed.
1397: * If newtag is NULL this mean we are at the end of the resource
1398: * and we should check
1399: */
1400: static void
1401: htmlAutoClose(htmlParserCtxtPtr ctxt, const xmlChar * newtag)
1402: {
1403: while ((newtag != NULL) && (ctxt->name != NULL) &&
1404: (htmlCheckAutoClose(newtag, ctxt->name))) {
1405: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
1406: ctxt->sax->endElement(ctxt->userData, ctxt->name);
1407: htmlnamePop(ctxt);
1408: }
1409: if (newtag == NULL) {
1410: htmlAutoCloseOnEnd(ctxt);
1411: return;
1412: }
1413: while ((newtag == NULL) && (ctxt->name != NULL) &&
1414: ((xmlStrEqual(ctxt->name, BAD_CAST "head")) ||
1415: (xmlStrEqual(ctxt->name, BAD_CAST "body")) ||
1416: (xmlStrEqual(ctxt->name, BAD_CAST "html")))) {
1417: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
1418: ctxt->sax->endElement(ctxt->userData, ctxt->name);
1419: htmlnamePop(ctxt);
1420: }
1421: }
1422:
1423: /**
1424: * htmlAutoCloseTag:
1425: * @doc: the HTML document
1426: * @name: The tag name
1427: * @elem: the HTML element
1428: *
1429: * The HTML DTD allows a tag to implicitly close other tags.
1430: * The list is kept in htmlStartClose array. This function checks
1431: * if the element or one of it's children would autoclose the
1432: * given tag.
1433: *
1434: * Returns 1 if autoclose, 0 otherwise
1435: */
1436: int
1437: htmlAutoCloseTag(htmlDocPtr doc, const xmlChar *name, htmlNodePtr elem) {
1438: htmlNodePtr child;
1439:
1440: if (elem == NULL) return(1);
1441: if (xmlStrEqual(name, elem->name)) return(0);
1442: if (htmlCheckAutoClose(elem->name, name)) return(1);
1443: child = elem->children;
1444: while (child != NULL) {
1445: if (htmlAutoCloseTag(doc, name, child)) return(1);
1446: child = child->next;
1447: }
1448: return(0);
1449: }
1450:
1451: /**
1452: * htmlIsAutoClosed:
1453: * @doc: the HTML document
1454: * @elem: the HTML element
1455: *
1456: * The HTML DTD allows a tag to implicitly close other tags.
1457: * The list is kept in htmlStartClose array. This function checks
1458: * if a tag is autoclosed by one of it's child
1459: *
1460: * Returns 1 if autoclosed, 0 otherwise
1461: */
1462: int
1463: htmlIsAutoClosed(htmlDocPtr doc, htmlNodePtr elem) {
1464: htmlNodePtr child;
1465:
1466: if (elem == NULL) return(1);
1467: child = elem->children;
1468: while (child != NULL) {
1469: if (htmlAutoCloseTag(doc, elem->name, child)) return(1);
1470: child = child->next;
1471: }
1472: return(0);
1473: }
1474:
1475: /**
1476: * htmlCheckImplied:
1477: * @ctxt: an HTML parser context
1478: * @newtag: The new tag name
1479: *
1480: * The HTML DTD allows a tag to exists only implicitly
1481: * called when a new tag has been detected and generates the
1482: * appropriates implicit tags if missing
1483: */
1484: static void
1485: htmlCheckImplied(htmlParserCtxtPtr ctxt, const xmlChar *newtag) {
1486: int i;
1487:
1488: if (ctxt->options & HTML_PARSE_NOIMPLIED)
1489: return;
1490: if (!htmlOmittedDefaultValue)
1491: return;
1492: if (xmlStrEqual(newtag, BAD_CAST"html"))
1493: return;
1494: if (ctxt->nameNr <= 0) {
1495: htmlnamePush(ctxt, BAD_CAST"html");
1496: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
1497: ctxt->sax->startElement(ctxt->userData, BAD_CAST"html", NULL);
1498: }
1499: if ((xmlStrEqual(newtag, BAD_CAST"body")) || (xmlStrEqual(newtag, BAD_CAST"head")))
1500: return;
1501: if ((ctxt->nameNr <= 1) &&
1502: ((xmlStrEqual(newtag, BAD_CAST"script")) ||
1503: (xmlStrEqual(newtag, BAD_CAST"style")) ||
1504: (xmlStrEqual(newtag, BAD_CAST"meta")) ||
1505: (xmlStrEqual(newtag, BAD_CAST"link")) ||
1506: (xmlStrEqual(newtag, BAD_CAST"title")) ||
1507: (xmlStrEqual(newtag, BAD_CAST"base")))) {
1508: if (ctxt->html >= 3) {
1509: /* we already saw or generated an <head> before */
1510: return;
1511: }
1512: /*
1513: * dropped OBJECT ... i you put it first BODY will be
1514: * assumed !
1515: */
1516: htmlnamePush(ctxt, BAD_CAST"head");
1517: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
1518: ctxt->sax->startElement(ctxt->userData, BAD_CAST"head", NULL);
1519: } else if ((!xmlStrEqual(newtag, BAD_CAST"noframes")) &&
1520: (!xmlStrEqual(newtag, BAD_CAST"frame")) &&
1521: (!xmlStrEqual(newtag, BAD_CAST"frameset"))) {
1522: if (ctxt->html >= 10) {
1523: /* we already saw or generated a <body> before */
1524: return;
1525: }
1526: for (i = 0;i < ctxt->nameNr;i++) {
1527: if (xmlStrEqual(ctxt->nameTab[i], BAD_CAST"body")) {
1528: return;
1529: }
1530: if (xmlStrEqual(ctxt->nameTab[i], BAD_CAST"head")) {
1531: return;
1532: }
1533: }
1534:
1535: htmlnamePush(ctxt, BAD_CAST"body");
1536: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
1537: ctxt->sax->startElement(ctxt->userData, BAD_CAST"body", NULL);
1538: }
1539: }
1540:
1541: /**
1542: * htmlCheckParagraph
1543: * @ctxt: an HTML parser context
1544: *
1545: * Check whether a p element need to be implied before inserting
1546: * characters in the current element.
1547: *
1548: * Returns 1 if a paragraph has been inserted, 0 if not and -1
1549: * in case of error.
1550: */
1551:
1552: static int
1553: htmlCheckParagraph(htmlParserCtxtPtr ctxt) {
1554: const xmlChar *tag;
1555: int i;
1556:
1557: if (ctxt == NULL)
1558: return(-1);
1559: tag = ctxt->name;
1560: if (tag == NULL) {
1561: htmlAutoClose(ctxt, BAD_CAST"p");
1562: htmlCheckImplied(ctxt, BAD_CAST"p");
1563: htmlnamePush(ctxt, BAD_CAST"p");
1564: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
1565: ctxt->sax->startElement(ctxt->userData, BAD_CAST"p", NULL);
1566: return(1);
1567: }
1568: if (!htmlOmittedDefaultValue)
1569: return(0);
1570: for (i = 0; htmlNoContentElements[i] != NULL; i++) {
1571: if (xmlStrEqual(tag, BAD_CAST htmlNoContentElements[i])) {
1572: htmlAutoClose(ctxt, BAD_CAST"p");
1573: htmlCheckImplied(ctxt, BAD_CAST"p");
1574: htmlnamePush(ctxt, BAD_CAST"p");
1575: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
1576: ctxt->sax->startElement(ctxt->userData, BAD_CAST"p", NULL);
1577: return(1);
1578: }
1579: }
1580: return(0);
1581: }
1582:
1583: /**
1584: * htmlIsScriptAttribute:
1585: * @name: an attribute name
1586: *
1587: * Check if an attribute is of content type Script
1588: *
1589: * Returns 1 is the attribute is a script 0 otherwise
1590: */
1591: int
1592: htmlIsScriptAttribute(const xmlChar *name) {
1593: unsigned int i;
1594:
1595: if (name == NULL)
1596: return(0);
1597: /*
1598: * all script attributes start with 'on'
1599: */
1600: if ((name[0] != 'o') || (name[1] != 'n'))
1601: return(0);
1602: for (i = 0;
1603: i < sizeof(htmlScriptAttributes)/sizeof(htmlScriptAttributes[0]);
1604: i++) {
1605: if (xmlStrEqual(name, (const xmlChar *) htmlScriptAttributes[i]))
1606: return(1);
1607: }
1608: return(0);
1609: }
1610:
1611: /************************************************************************
1612: * *
1613: * The list of HTML predefined entities *
1614: * *
1615: ************************************************************************/
1616:
1617:
1618: static const htmlEntityDesc html40EntitiesTable[] = {
1619: /*
1620: * the 4 absolute ones, plus apostrophe.
1621: */
1622: { 34, "quot", "quotation mark = APL quote, U+0022 ISOnum" },
1623: { 38, "amp", "ampersand, U+0026 ISOnum" },
1624: { 39, "apos", "single quote" },
1625: { 60, "lt", "less-than sign, U+003C ISOnum" },
1626: { 62, "gt", "greater-than sign, U+003E ISOnum" },
1627:
1628: /*
1629: * A bunch still in the 128-255 range
1630: * Replacing them depend really on the charset used.
1631: */
1632: { 160, "nbsp", "no-break space = non-breaking space, U+00A0 ISOnum" },
1633: { 161, "iexcl","inverted exclamation mark, U+00A1 ISOnum" },
1634: { 162, "cent", "cent sign, U+00A2 ISOnum" },
1635: { 163, "pound","pound sign, U+00A3 ISOnum" },
1636: { 164, "curren","currency sign, U+00A4 ISOnum" },
1637: { 165, "yen", "yen sign = yuan sign, U+00A5 ISOnum" },
1638: { 166, "brvbar","broken bar = broken vertical bar, U+00A6 ISOnum" },
1639: { 167, "sect", "section sign, U+00A7 ISOnum" },
1640: { 168, "uml", "diaeresis = spacing diaeresis, U+00A8 ISOdia" },
1641: { 169, "copy", "copyright sign, U+00A9 ISOnum" },
1642: { 170, "ordf", "feminine ordinal indicator, U+00AA ISOnum" },
1643: { 171, "laquo","left-pointing double angle quotation mark = left pointing guillemet, U+00AB ISOnum" },
1644: { 172, "not", "not sign, U+00AC ISOnum" },
1645: { 173, "shy", "soft hyphen = discretionary hyphen, U+00AD ISOnum" },
1646: { 174, "reg", "registered sign = registered trade mark sign, U+00AE ISOnum" },
1647: { 175, "macr", "macron = spacing macron = overline = APL overbar, U+00AF ISOdia" },
1648: { 176, "deg", "degree sign, U+00B0 ISOnum" },
1649: { 177, "plusmn","plus-minus sign = plus-or-minus sign, U+00B1 ISOnum" },
1650: { 178, "sup2", "superscript two = superscript digit two = squared, U+00B2 ISOnum" },
1651: { 179, "sup3", "superscript three = superscript digit three = cubed, U+00B3 ISOnum" },
1652: { 180, "acute","acute accent = spacing acute, U+00B4 ISOdia" },
1653: { 181, "micro","micro sign, U+00B5 ISOnum" },
1654: { 182, "para", "pilcrow sign = paragraph sign, U+00B6 ISOnum" },
1655: { 183, "middot","middle dot = Georgian comma Greek middle dot, U+00B7 ISOnum" },
1656: { 184, "cedil","cedilla = spacing cedilla, U+00B8 ISOdia" },
1657: { 185, "sup1", "superscript one = superscript digit one, U+00B9 ISOnum" },
1658: { 186, "ordm", "masculine ordinal indicator, U+00BA ISOnum" },
1659: { 187, "raquo","right-pointing double angle quotation mark right pointing guillemet, U+00BB ISOnum" },
1660: { 188, "frac14","vulgar fraction one quarter = fraction one quarter, U+00BC ISOnum" },
1661: { 189, "frac12","vulgar fraction one half = fraction one half, U+00BD ISOnum" },
1662: { 190, "frac34","vulgar fraction three quarters = fraction three quarters, U+00BE ISOnum" },
1663: { 191, "iquest","inverted question mark = turned question mark, U+00BF ISOnum" },
1664: { 192, "Agrave","latin capital letter A with grave = latin capital letter A grave, U+00C0 ISOlat1" },
1665: { 193, "Aacute","latin capital letter A with acute, U+00C1 ISOlat1" },
1666: { 194, "Acirc","latin capital letter A with circumflex, U+00C2 ISOlat1" },
1667: { 195, "Atilde","latin capital letter A with tilde, U+00C3 ISOlat1" },
1668: { 196, "Auml", "latin capital letter A with diaeresis, U+00C4 ISOlat1" },
1669: { 197, "Aring","latin capital letter A with ring above = latin capital letter A ring, U+00C5 ISOlat1" },
1670: { 198, "AElig","latin capital letter AE = latin capital ligature AE, U+00C6 ISOlat1" },
1671: { 199, "Ccedil","latin capital letter C with cedilla, U+00C7 ISOlat1" },
1672: { 200, "Egrave","latin capital letter E with grave, U+00C8 ISOlat1" },
1673: { 201, "Eacute","latin capital letter E with acute, U+00C9 ISOlat1" },
1674: { 202, "Ecirc","latin capital letter E with circumflex, U+00CA ISOlat1" },
1675: { 203, "Euml", "latin capital letter E with diaeresis, U+00CB ISOlat1" },
1676: { 204, "Igrave","latin capital letter I with grave, U+00CC ISOlat1" },
1677: { 205, "Iacute","latin capital letter I with acute, U+00CD ISOlat1" },
1678: { 206, "Icirc","latin capital letter I with circumflex, U+00CE ISOlat1" },
1679: { 207, "Iuml", "latin capital letter I with diaeresis, U+00CF ISOlat1" },
1680: { 208, "ETH", "latin capital letter ETH, U+00D0 ISOlat1" },
1681: { 209, "Ntilde","latin capital letter N with tilde, U+00D1 ISOlat1" },
1682: { 210, "Ograve","latin capital letter O with grave, U+00D2 ISOlat1" },
1683: { 211, "Oacute","latin capital letter O with acute, U+00D3 ISOlat1" },
1684: { 212, "Ocirc","latin capital letter O with circumflex, U+00D4 ISOlat1" },
1685: { 213, "Otilde","latin capital letter O with tilde, U+00D5 ISOlat1" },
1686: { 214, "Ouml", "latin capital letter O with diaeresis, U+00D6 ISOlat1" },
1687: { 215, "times","multiplication sign, U+00D7 ISOnum" },
1688: { 216, "Oslash","latin capital letter O with stroke latin capital letter O slash, U+00D8 ISOlat1" },
1689: { 217, "Ugrave","latin capital letter U with grave, U+00D9 ISOlat1" },
1690: { 218, "Uacute","latin capital letter U with acute, U+00DA ISOlat1" },
1691: { 219, "Ucirc","latin capital letter U with circumflex, U+00DB ISOlat1" },
1692: { 220, "Uuml", "latin capital letter U with diaeresis, U+00DC ISOlat1" },
1693: { 221, "Yacute","latin capital letter Y with acute, U+00DD ISOlat1" },
1694: { 222, "THORN","latin capital letter THORN, U+00DE ISOlat1" },
1695: { 223, "szlig","latin small letter sharp s = ess-zed, U+00DF ISOlat1" },
1696: { 224, "agrave","latin small letter a with grave = latin small letter a grave, U+00E0 ISOlat1" },
1697: { 225, "aacute","latin small letter a with acute, U+00E1 ISOlat1" },
1698: { 226, "acirc","latin small letter a with circumflex, U+00E2 ISOlat1" },
1699: { 227, "atilde","latin small letter a with tilde, U+00E3 ISOlat1" },
1700: { 228, "auml", "latin small letter a with diaeresis, U+00E4 ISOlat1" },
1701: { 229, "aring","latin small letter a with ring above = latin small letter a ring, U+00E5 ISOlat1" },
1702: { 230, "aelig","latin small letter ae = latin small ligature ae, U+00E6 ISOlat1" },
1703: { 231, "ccedil","latin small letter c with cedilla, U+00E7 ISOlat1" },
1704: { 232, "egrave","latin small letter e with grave, U+00E8 ISOlat1" },
1705: { 233, "eacute","latin small letter e with acute, U+00E9 ISOlat1" },
1706: { 234, "ecirc","latin small letter e with circumflex, U+00EA ISOlat1" },
1707: { 235, "euml", "latin small letter e with diaeresis, U+00EB ISOlat1" },
1708: { 236, "igrave","latin small letter i with grave, U+00EC ISOlat1" },
1709: { 237, "iacute","latin small letter i with acute, U+00ED ISOlat1" },
1710: { 238, "icirc","latin small letter i with circumflex, U+00EE ISOlat1" },
1711: { 239, "iuml", "latin small letter i with diaeresis, U+00EF ISOlat1" },
1712: { 240, "eth", "latin small letter eth, U+00F0 ISOlat1" },
1713: { 241, "ntilde","latin small letter n with tilde, U+00F1 ISOlat1" },
1714: { 242, "ograve","latin small letter o with grave, U+00F2 ISOlat1" },
1715: { 243, "oacute","latin small letter o with acute, U+00F3 ISOlat1" },
1716: { 244, "ocirc","latin small letter o with circumflex, U+00F4 ISOlat1" },
1717: { 245, "otilde","latin small letter o with tilde, U+00F5 ISOlat1" },
1718: { 246, "ouml", "latin small letter o with diaeresis, U+00F6 ISOlat1" },
1719: { 247, "divide","division sign, U+00F7 ISOnum" },
1720: { 248, "oslash","latin small letter o with stroke, = latin small letter o slash, U+00F8 ISOlat1" },
1721: { 249, "ugrave","latin small letter u with grave, U+00F9 ISOlat1" },
1722: { 250, "uacute","latin small letter u with acute, U+00FA ISOlat1" },
1723: { 251, "ucirc","latin small letter u with circumflex, U+00FB ISOlat1" },
1724: { 252, "uuml", "latin small letter u with diaeresis, U+00FC ISOlat1" },
1725: { 253, "yacute","latin small letter y with acute, U+00FD ISOlat1" },
1726: { 254, "thorn","latin small letter thorn with, U+00FE ISOlat1" },
1727: { 255, "yuml", "latin small letter y with diaeresis, U+00FF ISOlat1" },
1728:
1729: { 338, "OElig","latin capital ligature OE, U+0152 ISOlat2" },
1730: { 339, "oelig","latin small ligature oe, U+0153 ISOlat2" },
1731: { 352, "Scaron","latin capital letter S with caron, U+0160 ISOlat2" },
1732: { 353, "scaron","latin small letter s with caron, U+0161 ISOlat2" },
1733: { 376, "Yuml", "latin capital letter Y with diaeresis, U+0178 ISOlat2" },
1734:
1735: /*
1736: * Anything below should really be kept as entities references
1737: */
1738: { 402, "fnof", "latin small f with hook = function = florin, U+0192 ISOtech" },
1739:
1740: { 710, "circ", "modifier letter circumflex accent, U+02C6 ISOpub" },
1741: { 732, "tilde","small tilde, U+02DC ISOdia" },
1742:
1743: { 913, "Alpha","greek capital letter alpha, U+0391" },
1744: { 914, "Beta", "greek capital letter beta, U+0392" },
1745: { 915, "Gamma","greek capital letter gamma, U+0393 ISOgrk3" },
1746: { 916, "Delta","greek capital letter delta, U+0394 ISOgrk3" },
1747: { 917, "Epsilon","greek capital letter epsilon, U+0395" },
1748: { 918, "Zeta", "greek capital letter zeta, U+0396" },
1749: { 919, "Eta", "greek capital letter eta, U+0397" },
1750: { 920, "Theta","greek capital letter theta, U+0398 ISOgrk3" },
1751: { 921, "Iota", "greek capital letter iota, U+0399" },
1752: { 922, "Kappa","greek capital letter kappa, U+039A" },
1753: { 923, "Lambda", "greek capital letter lambda, U+039B ISOgrk3" },
1754: { 924, "Mu", "greek capital letter mu, U+039C" },
1755: { 925, "Nu", "greek capital letter nu, U+039D" },
1756: { 926, "Xi", "greek capital letter xi, U+039E ISOgrk3" },
1757: { 927, "Omicron","greek capital letter omicron, U+039F" },
1758: { 928, "Pi", "greek capital letter pi, U+03A0 ISOgrk3" },
1759: { 929, "Rho", "greek capital letter rho, U+03A1" },
1760: { 931, "Sigma","greek capital letter sigma, U+03A3 ISOgrk3" },
1761: { 932, "Tau", "greek capital letter tau, U+03A4" },
1762: { 933, "Upsilon","greek capital letter upsilon, U+03A5 ISOgrk3" },
1763: { 934, "Phi", "greek capital letter phi, U+03A6 ISOgrk3" },
1764: { 935, "Chi", "greek capital letter chi, U+03A7" },
1765: { 936, "Psi", "greek capital letter psi, U+03A8 ISOgrk3" },
1766: { 937, "Omega","greek capital letter omega, U+03A9 ISOgrk3" },
1767:
1768: { 945, "alpha","greek small letter alpha, U+03B1 ISOgrk3" },
1769: { 946, "beta", "greek small letter beta, U+03B2 ISOgrk3" },
1770: { 947, "gamma","greek small letter gamma, U+03B3 ISOgrk3" },
1771: { 948, "delta","greek small letter delta, U+03B4 ISOgrk3" },
1772: { 949, "epsilon","greek small letter epsilon, U+03B5 ISOgrk3" },
1773: { 950, "zeta", "greek small letter zeta, U+03B6 ISOgrk3" },
1774: { 951, "eta", "greek small letter eta, U+03B7 ISOgrk3" },
1775: { 952, "theta","greek small letter theta, U+03B8 ISOgrk3" },
1776: { 953, "iota", "greek small letter iota, U+03B9 ISOgrk3" },
1777: { 954, "kappa","greek small letter kappa, U+03BA ISOgrk3" },
1778: { 955, "lambda","greek small letter lambda, U+03BB ISOgrk3" },
1779: { 956, "mu", "greek small letter mu, U+03BC ISOgrk3" },
1780: { 957, "nu", "greek small letter nu, U+03BD ISOgrk3" },
1781: { 958, "xi", "greek small letter xi, U+03BE ISOgrk3" },
1782: { 959, "omicron","greek small letter omicron, U+03BF NEW" },
1783: { 960, "pi", "greek small letter pi, U+03C0 ISOgrk3" },
1784: { 961, "rho", "greek small letter rho, U+03C1 ISOgrk3" },
1785: { 962, "sigmaf","greek small letter final sigma, U+03C2 ISOgrk3" },
1786: { 963, "sigma","greek small letter sigma, U+03C3 ISOgrk3" },
1787: { 964, "tau", "greek small letter tau, U+03C4 ISOgrk3" },
1788: { 965, "upsilon","greek small letter upsilon, U+03C5 ISOgrk3" },
1789: { 966, "phi", "greek small letter phi, U+03C6 ISOgrk3" },
1790: { 967, "chi", "greek small letter chi, U+03C7 ISOgrk3" },
1791: { 968, "psi", "greek small letter psi, U+03C8 ISOgrk3" },
1792: { 969, "omega","greek small letter omega, U+03C9 ISOgrk3" },
1793: { 977, "thetasym","greek small letter theta symbol, U+03D1 NEW" },
1794: { 978, "upsih","greek upsilon with hook symbol, U+03D2 NEW" },
1795: { 982, "piv", "greek pi symbol, U+03D6 ISOgrk3" },
1796:
1797: { 8194, "ensp", "en space, U+2002 ISOpub" },
1798: { 8195, "emsp", "em space, U+2003 ISOpub" },
1799: { 8201, "thinsp","thin space, U+2009 ISOpub" },
1800: { 8204, "zwnj", "zero width non-joiner, U+200C NEW RFC 2070" },
1801: { 8205, "zwj", "zero width joiner, U+200D NEW RFC 2070" },
1802: { 8206, "lrm", "left-to-right mark, U+200E NEW RFC 2070" },
1803: { 8207, "rlm", "right-to-left mark, U+200F NEW RFC 2070" },
1804: { 8211, "ndash","en dash, U+2013 ISOpub" },
1805: { 8212, "mdash","em dash, U+2014 ISOpub" },
1806: { 8216, "lsquo","left single quotation mark, U+2018 ISOnum" },
1807: { 8217, "rsquo","right single quotation mark, U+2019 ISOnum" },
1808: { 8218, "sbquo","single low-9 quotation mark, U+201A NEW" },
1809: { 8220, "ldquo","left double quotation mark, U+201C ISOnum" },
1810: { 8221, "rdquo","right double quotation mark, U+201D ISOnum" },
1811: { 8222, "bdquo","double low-9 quotation mark, U+201E NEW" },
1812: { 8224, "dagger","dagger, U+2020 ISOpub" },
1813: { 8225, "Dagger","double dagger, U+2021 ISOpub" },
1814:
1815: { 8226, "bull", "bullet = black small circle, U+2022 ISOpub" },
1816: { 8230, "hellip","horizontal ellipsis = three dot leader, U+2026 ISOpub" },
1817:
1818: { 8240, "permil","per mille sign, U+2030 ISOtech" },
1819:
1820: { 8242, "prime","prime = minutes = feet, U+2032 ISOtech" },
1821: { 8243, "Prime","double prime = seconds = inches, U+2033 ISOtech" },
1822:
1823: { 8249, "lsaquo","single left-pointing angle quotation mark, U+2039 ISO proposed" },
1824: { 8250, "rsaquo","single right-pointing angle quotation mark, U+203A ISO proposed" },
1825:
1826: { 8254, "oline","overline = spacing overscore, U+203E NEW" },
1827: { 8260, "frasl","fraction slash, U+2044 NEW" },
1828:
1829: { 8364, "euro", "euro sign, U+20AC NEW" },
1830:
1831: { 8465, "image","blackletter capital I = imaginary part, U+2111 ISOamso" },
1832: { 8472, "weierp","script capital P = power set = Weierstrass p, U+2118 ISOamso" },
1833: { 8476, "real", "blackletter capital R = real part symbol, U+211C ISOamso" },
1834: { 8482, "trade","trade mark sign, U+2122 ISOnum" },
1835: { 8501, "alefsym","alef symbol = first transfinite cardinal, U+2135 NEW" },
1836: { 8592, "larr", "leftwards arrow, U+2190 ISOnum" },
1837: { 8593, "uarr", "upwards arrow, U+2191 ISOnum" },
1838: { 8594, "rarr", "rightwards arrow, U+2192 ISOnum" },
1839: { 8595, "darr", "downwards arrow, U+2193 ISOnum" },
1840: { 8596, "harr", "left right arrow, U+2194 ISOamsa" },
1841: { 8629, "crarr","downwards arrow with corner leftwards = carriage return, U+21B5 NEW" },
1842: { 8656, "lArr", "leftwards double arrow, U+21D0 ISOtech" },
1843: { 8657, "uArr", "upwards double arrow, U+21D1 ISOamsa" },
1844: { 8658, "rArr", "rightwards double arrow, U+21D2 ISOtech" },
1845: { 8659, "dArr", "downwards double arrow, U+21D3 ISOamsa" },
1846: { 8660, "hArr", "left right double arrow, U+21D4 ISOamsa" },
1847:
1848: { 8704, "forall","for all, U+2200 ISOtech" },
1849: { 8706, "part", "partial differential, U+2202 ISOtech" },
1850: { 8707, "exist","there exists, U+2203 ISOtech" },
1851: { 8709, "empty","empty set = null set = diameter, U+2205 ISOamso" },
1852: { 8711, "nabla","nabla = backward difference, U+2207 ISOtech" },
1853: { 8712, "isin", "element of, U+2208 ISOtech" },
1854: { 8713, "notin","not an element of, U+2209 ISOtech" },
1855: { 8715, "ni", "contains as member, U+220B ISOtech" },
1856: { 8719, "prod", "n-ary product = product sign, U+220F ISOamsb" },
1857: { 8721, "sum", "n-ary summation, U+2211 ISOamsb" },
1858: { 8722, "minus","minus sign, U+2212 ISOtech" },
1859: { 8727, "lowast","asterisk operator, U+2217 ISOtech" },
1860: { 8730, "radic","square root = radical sign, U+221A ISOtech" },
1861: { 8733, "prop", "proportional to, U+221D ISOtech" },
1862: { 8734, "infin","infinity, U+221E ISOtech" },
1863: { 8736, "ang", "angle, U+2220 ISOamso" },
1864: { 8743, "and", "logical and = wedge, U+2227 ISOtech" },
1865: { 8744, "or", "logical or = vee, U+2228 ISOtech" },
1866: { 8745, "cap", "intersection = cap, U+2229 ISOtech" },
1867: { 8746, "cup", "union = cup, U+222A ISOtech" },
1868: { 8747, "int", "integral, U+222B ISOtech" },
1869: { 8756, "there4","therefore, U+2234 ISOtech" },
1870: { 8764, "sim", "tilde operator = varies with = similar to, U+223C ISOtech" },
1871: { 8773, "cong", "approximately equal to, U+2245 ISOtech" },
1872: { 8776, "asymp","almost equal to = asymptotic to, U+2248 ISOamsr" },
1873: { 8800, "ne", "not equal to, U+2260 ISOtech" },
1874: { 8801, "equiv","identical to, U+2261 ISOtech" },
1875: { 8804, "le", "less-than or equal to, U+2264 ISOtech" },
1876: { 8805, "ge", "greater-than or equal to, U+2265 ISOtech" },
1877: { 8834, "sub", "subset of, U+2282 ISOtech" },
1878: { 8835, "sup", "superset of, U+2283 ISOtech" },
1879: { 8836, "nsub", "not a subset of, U+2284 ISOamsn" },
1880: { 8838, "sube", "subset of or equal to, U+2286 ISOtech" },
1881: { 8839, "supe", "superset of or equal to, U+2287 ISOtech" },
1882: { 8853, "oplus","circled plus = direct sum, U+2295 ISOamsb" },
1883: { 8855, "otimes","circled times = vector product, U+2297 ISOamsb" },
1884: { 8869, "perp", "up tack = orthogonal to = perpendicular, U+22A5 ISOtech" },
1885: { 8901, "sdot", "dot operator, U+22C5 ISOamsb" },
1886: { 8968, "lceil","left ceiling = apl upstile, U+2308 ISOamsc" },
1887: { 8969, "rceil","right ceiling, U+2309 ISOamsc" },
1888: { 8970, "lfloor","left floor = apl downstile, U+230A ISOamsc" },
1889: { 8971, "rfloor","right floor, U+230B ISOamsc" },
1890: { 9001, "lang", "left-pointing angle bracket = bra, U+2329 ISOtech" },
1891: { 9002, "rang", "right-pointing angle bracket = ket, U+232A ISOtech" },
1892: { 9674, "loz", "lozenge, U+25CA ISOpub" },
1893:
1894: { 9824, "spades","black spade suit, U+2660 ISOpub" },
1895: { 9827, "clubs","black club suit = shamrock, U+2663 ISOpub" },
1896: { 9829, "hearts","black heart suit = valentine, U+2665 ISOpub" },
1897: { 9830, "diams","black diamond suit, U+2666 ISOpub" },
1898:
1899: };
1900:
1901: /************************************************************************
1902: * *
1903: * Commodity functions to handle entities *
1904: * *
1905: ************************************************************************/
1906:
1907: /*
1908: * Macro used to grow the current buffer.
1909: */
1910: #define growBuffer(buffer) { \
1911: xmlChar *tmp; \
1912: buffer##_size *= 2; \
1913: tmp = (xmlChar *) xmlRealloc(buffer, buffer##_size * sizeof(xmlChar)); \
1914: if (tmp == NULL) { \
1915: htmlErrMemory(ctxt, "growing buffer\n"); \
1916: xmlFree(buffer); \
1917: return(NULL); \
1918: } \
1919: buffer = tmp; \
1920: }
1921:
1922: /**
1923: * htmlEntityLookup:
1924: * @name: the entity name
1925: *
1926: * Lookup the given entity in EntitiesTable
1927: *
1928: * TODO: the linear scan is really ugly, an hash table is really needed.
1929: *
1930: * Returns the associated htmlEntityDescPtr if found, NULL otherwise.
1931: */
1932: const htmlEntityDesc *
1933: htmlEntityLookup(const xmlChar *name) {
1934: unsigned int i;
1935:
1936: for (i = 0;i < (sizeof(html40EntitiesTable)/
1937: sizeof(html40EntitiesTable[0]));i++) {
1938: if (xmlStrEqual(name, BAD_CAST html40EntitiesTable[i].name)) {
1939: return((htmlEntityDescPtr) &html40EntitiesTable[i]);
1940: }
1941: }
1942: return(NULL);
1943: }
1944:
1945: /**
1946: * htmlEntityValueLookup:
1947: * @value: the entity's unicode value
1948: *
1949: * Lookup the given entity in EntitiesTable
1950: *
1951: * TODO: the linear scan is really ugly, an hash table is really needed.
1952: *
1953: * Returns the associated htmlEntityDescPtr if found, NULL otherwise.
1954: */
1955: const htmlEntityDesc *
1956: htmlEntityValueLookup(unsigned int value) {
1957: unsigned int i;
1958:
1959: for (i = 0;i < (sizeof(html40EntitiesTable)/
1960: sizeof(html40EntitiesTable[0]));i++) {
1961: if (html40EntitiesTable[i].value >= value) {
1962: if (html40EntitiesTable[i].value > value)
1963: break;
1964: return((htmlEntityDescPtr) &html40EntitiesTable[i]);
1965: }
1966: }
1967: return(NULL);
1968: }
1969:
1970: /**
1971: * UTF8ToHtml:
1972: * @out: a pointer to an array of bytes to store the result
1973: * @outlen: the length of @out
1974: * @in: a pointer to an array of UTF-8 chars
1975: * @inlen: the length of @in
1976: *
1977: * Take a block of UTF-8 chars in and try to convert it to an ASCII
1978: * plus HTML entities block of chars out.
1979: *
1980: * Returns 0 if success, -2 if the transcoding fails, or -1 otherwise
1981: * The value of @inlen after return is the number of octets consumed
1982: * as the return value is positive, else unpredictable.
1983: * The value of @outlen after return is the number of octets consumed.
1984: */
1985: int
1986: UTF8ToHtml(unsigned char* out, int *outlen,
1987: const unsigned char* in, int *inlen) {
1988: const unsigned char* processed = in;
1989: const unsigned char* outend;
1990: const unsigned char* outstart = out;
1991: const unsigned char* instart = in;
1992: const unsigned char* inend;
1993: unsigned int c, d;
1994: int trailing;
1995:
1996: if ((out == NULL) || (outlen == NULL) || (inlen == NULL)) return(-1);
1997: if (in == NULL) {
1998: /*
1999: * initialization nothing to do
2000: */
2001: *outlen = 0;
2002: *inlen = 0;
2003: return(0);
2004: }
2005: inend = in + (*inlen);
2006: outend = out + (*outlen);
2007: while (in < inend) {
2008: d = *in++;
2009: if (d < 0x80) { c= d; trailing= 0; }
2010: else if (d < 0xC0) {
2011: /* trailing byte in leading position */
2012: *outlen = out - outstart;
2013: *inlen = processed - instart;
2014: return(-2);
2015: } else if (d < 0xE0) { c= d & 0x1F; trailing= 1; }
2016: else if (d < 0xF0) { c= d & 0x0F; trailing= 2; }
2017: else if (d < 0xF8) { c= d & 0x07; trailing= 3; }
2018: else {
2019: /* no chance for this in Ascii */
2020: *outlen = out - outstart;
2021: *inlen = processed - instart;
2022: return(-2);
2023: }
2024:
2025: if (inend - in < trailing) {
2026: break;
2027: }
2028:
2029: for ( ; trailing; trailing--) {
2030: if ((in >= inend) || (((d= *in++) & 0xC0) != 0x80))
2031: break;
2032: c <<= 6;
2033: c |= d & 0x3F;
2034: }
2035:
2036: /* assertion: c is a single UTF-4 value */
2037: if (c < 0x80) {
2038: if (out + 1 >= outend)
2039: break;
2040: *out++ = c;
2041: } else {
2042: int len;
2043: const htmlEntityDesc * ent;
2044: const char *cp;
2045: char nbuf[16];
2046:
2047: /*
2048: * Try to lookup a predefined HTML entity for it
2049: */
2050:
2051: ent = htmlEntityValueLookup(c);
2052: if (ent == NULL) {
2053: snprintf(nbuf, sizeof(nbuf), "#%u", c);
2054: cp = nbuf;
2055: }
2056: else
2057: cp = ent->name;
2058: len = strlen(cp);
2059: if (out + 2 + len >= outend)
2060: break;
2061: *out++ = '&';
2062: memcpy(out, cp, len);
2063: out += len;
2064: *out++ = ';';
2065: }
2066: processed = in;
2067: }
2068: *outlen = out - outstart;
2069: *inlen = processed - instart;
2070: return(0);
2071: }
2072:
2073: /**
2074: * htmlEncodeEntities:
2075: * @out: a pointer to an array of bytes to store the result
2076: * @outlen: the length of @out
2077: * @in: a pointer to an array of UTF-8 chars
2078: * @inlen: the length of @in
2079: * @quoteChar: the quote character to escape (' or ") or zero.
2080: *
2081: * Take a block of UTF-8 chars in and try to convert it to an ASCII
2082: * plus HTML entities block of chars out.
2083: *
2084: * Returns 0 if success, -2 if the transcoding fails, or -1 otherwise
2085: * The value of @inlen after return is the number of octets consumed
2086: * as the return value is positive, else unpredictable.
2087: * The value of @outlen after return is the number of octets consumed.
2088: */
2089: int
2090: htmlEncodeEntities(unsigned char* out, int *outlen,
2091: const unsigned char* in, int *inlen, int quoteChar) {
2092: const unsigned char* processed = in;
2093: const unsigned char* outend;
2094: const unsigned char* outstart = out;
2095: const unsigned char* instart = in;
2096: const unsigned char* inend;
2097: unsigned int c, d;
2098: int trailing;
2099:
2100: if ((out == NULL) || (outlen == NULL) || (inlen == NULL) || (in == NULL))
2101: return(-1);
2102: outend = out + (*outlen);
2103: inend = in + (*inlen);
2104: while (in < inend) {
2105: d = *in++;
2106: if (d < 0x80) { c= d; trailing= 0; }
2107: else if (d < 0xC0) {
2108: /* trailing byte in leading position */
2109: *outlen = out - outstart;
2110: *inlen = processed - instart;
2111: return(-2);
2112: } else if (d < 0xE0) { c= d & 0x1F; trailing= 1; }
2113: else if (d < 0xF0) { c= d & 0x0F; trailing= 2; }
2114: else if (d < 0xF8) { c= d & 0x07; trailing= 3; }
2115: else {
2116: /* no chance for this in Ascii */
2117: *outlen = out - outstart;
2118: *inlen = processed - instart;
2119: return(-2);
2120: }
2121:
2122: if (inend - in < trailing)
2123: break;
2124:
2125: while (trailing--) {
2126: if (((d= *in++) & 0xC0) != 0x80) {
2127: *outlen = out - outstart;
2128: *inlen = processed - instart;
2129: return(-2);
2130: }
2131: c <<= 6;
2132: c |= d & 0x3F;
2133: }
2134:
2135: /* assertion: c is a single UTF-4 value */
2136: if ((c < 0x80) && (c != (unsigned int) quoteChar) &&
2137: (c != '&') && (c != '<') && (c != '>')) {
2138: if (out >= outend)
2139: break;
2140: *out++ = c;
2141: } else {
2142: const htmlEntityDesc * ent;
2143: const char *cp;
2144: char nbuf[16];
2145: int len;
2146:
2147: /*
2148: * Try to lookup a predefined HTML entity for it
2149: */
2150: ent = htmlEntityValueLookup(c);
2151: if (ent == NULL) {
2152: snprintf(nbuf, sizeof(nbuf), "#%u", c);
2153: cp = nbuf;
2154: }
2155: else
2156: cp = ent->name;
2157: len = strlen(cp);
2158: if (out + 2 + len > outend)
2159: break;
2160: *out++ = '&';
2161: memcpy(out, cp, len);
2162: out += len;
2163: *out++ = ';';
2164: }
2165: processed = in;
2166: }
2167: *outlen = out - outstart;
2168: *inlen = processed - instart;
2169: return(0);
2170: }
2171:
2172: /************************************************************************
2173: * *
2174: * Commodity functions to handle streams *
2175: * *
2176: ************************************************************************/
2177:
2178: /**
2179: * htmlNewInputStream:
2180: * @ctxt: an HTML parser context
2181: *
2182: * Create a new input stream structure
2183: * Returns the new input stream or NULL
2184: */
2185: static htmlParserInputPtr
2186: htmlNewInputStream(htmlParserCtxtPtr ctxt) {
2187: htmlParserInputPtr input;
2188:
2189: input = (xmlParserInputPtr) xmlMalloc(sizeof(htmlParserInput));
2190: if (input == NULL) {
2191: htmlErrMemory(ctxt, "couldn't allocate a new input stream\n");
2192: return(NULL);
2193: }
2194: memset(input, 0, sizeof(htmlParserInput));
2195: input->filename = NULL;
2196: input->directory = NULL;
2197: input->base = NULL;
2198: input->cur = NULL;
2199: input->buf = NULL;
2200: input->line = 1;
2201: input->col = 1;
2202: input->buf = NULL;
2203: input->free = NULL;
2204: input->version = NULL;
2205: input->consumed = 0;
2206: input->length = 0;
2207: return(input);
2208: }
2209:
2210:
2211: /************************************************************************
2212: * *
2213: * Commodity functions, cleanup needed ? *
2214: * *
2215: ************************************************************************/
2216: /*
2217: * all tags allowing pc data from the html 4.01 loose dtd
2218: * NOTE: it might be more apropriate to integrate this information
2219: * into the html40ElementTable array but I don't want to risk any
2220: * binary incomptibility
2221: */
2222: static const char *allowPCData[] = {
2223: "a", "abbr", "acronym", "address", "applet", "b", "bdo", "big",
2224: "blockquote", "body", "button", "caption", "center", "cite", "code",
2225: "dd", "del", "dfn", "div", "dt", "em", "font", "form", "h1", "h2",
2226: "h3", "h4", "h5", "h6", "i", "iframe", "ins", "kbd", "label", "legend",
2227: "li", "noframes", "noscript", "object", "p", "pre", "q", "s", "samp",
2228: "small", "span", "strike", "strong", "td", "th", "tt", "u", "var"
2229: };
2230:
2231: /**
2232: * areBlanks:
2233: * @ctxt: an HTML parser context
2234: * @str: a xmlChar *
2235: * @len: the size of @str
2236: *
2237: * Is this a sequence of blank chars that one can ignore ?
2238: *
2239: * Returns 1 if ignorable 0 otherwise.
2240: */
2241:
2242: static int areBlanks(htmlParserCtxtPtr ctxt, const xmlChar *str, int len) {
2243: unsigned int i;
2244: int j;
2245: xmlNodePtr lastChild;
2246: xmlDtdPtr dtd;
2247:
2248: for (j = 0;j < len;j++)
2249: if (!(IS_BLANK_CH(str[j]))) return(0);
2250:
2251: if (CUR == 0) return(1);
2252: if (CUR != '<') return(0);
2253: if (ctxt->name == NULL)
2254: return(1);
2255: if (xmlStrEqual(ctxt->name, BAD_CAST"html"))
2256: return(1);
2257: if (xmlStrEqual(ctxt->name, BAD_CAST"head"))
2258: return(1);
2259:
2260: /* Only strip CDATA children of the body tag for strict HTML DTDs */
2261: if (xmlStrEqual(ctxt->name, BAD_CAST "body") && ctxt->myDoc != NULL) {
2262: dtd = xmlGetIntSubset(ctxt->myDoc);
2263: if (dtd != NULL && dtd->ExternalID != NULL) {
2264: if (!xmlStrcasecmp(dtd->ExternalID, BAD_CAST "-//W3C//DTD HTML 4.01//EN") ||
2265: !xmlStrcasecmp(dtd->ExternalID, BAD_CAST "-//W3C//DTD HTML 4//EN"))
2266: return(1);
2267: }
2268: }
2269:
2270: if (ctxt->node == NULL) return(0);
2271: lastChild = xmlGetLastChild(ctxt->node);
2272: while ((lastChild) && (lastChild->type == XML_COMMENT_NODE))
2273: lastChild = lastChild->prev;
2274: if (lastChild == NULL) {
2275: if ((ctxt->node->type != XML_ELEMENT_NODE) &&
2276: (ctxt->node->content != NULL)) return(0);
2277: /* keep ws in constructs like ...<b> </b>...
2278: for all tags "b" allowing PCDATA */
2279: for ( i = 0; i < sizeof(allowPCData)/sizeof(allowPCData[0]); i++ ) {
2280: if ( xmlStrEqual(ctxt->name, BAD_CAST allowPCData[i]) ) {
2281: return(0);
2282: }
2283: }
2284: } else if (xmlNodeIsText(lastChild)) {
2285: return(0);
2286: } else {
2287: /* keep ws in constructs like <p><b>xy</b> <i>z</i><p>
2288: for all tags "p" allowing PCDATA */
2289: for ( i = 0; i < sizeof(allowPCData)/sizeof(allowPCData[0]); i++ ) {
2290: if ( xmlStrEqual(lastChild->name, BAD_CAST allowPCData[i]) ) {
2291: return(0);
2292: }
2293: }
2294: }
2295: return(1);
2296: }
2297:
2298: /**
2299: * htmlNewDocNoDtD:
2300: * @URI: URI for the dtd, or NULL
2301: * @ExternalID: the external ID of the DTD, or NULL
2302: *
2303: * Creates a new HTML document without a DTD node if @URI and @ExternalID
2304: * are NULL
2305: *
2306: * Returns a new document, do not initialize the DTD if not provided
2307: */
2308: htmlDocPtr
2309: htmlNewDocNoDtD(const xmlChar *URI, const xmlChar *ExternalID) {
2310: xmlDocPtr cur;
2311:
2312: /*
2313: * Allocate a new document and fill the fields.
2314: */
2315: cur = (xmlDocPtr) xmlMalloc(sizeof(xmlDoc));
2316: if (cur == NULL) {
2317: htmlErrMemory(NULL, "HTML document creation failed\n");
2318: return(NULL);
2319: }
2320: memset(cur, 0, sizeof(xmlDoc));
2321:
2322: cur->type = XML_HTML_DOCUMENT_NODE;
2323: cur->version = NULL;
2324: cur->intSubset = NULL;
2325: cur->doc = cur;
2326: cur->name = NULL;
2327: cur->children = NULL;
2328: cur->extSubset = NULL;
2329: cur->oldNs = NULL;
2330: cur->encoding = NULL;
2331: cur->standalone = 1;
2332: cur->compression = 0;
2333: cur->ids = NULL;
2334: cur->refs = NULL;
2335: cur->_private = NULL;
2336: cur->charset = XML_CHAR_ENCODING_UTF8;
2337: cur->properties = XML_DOC_HTML | XML_DOC_USERBUILT;
2338: if ((ExternalID != NULL) ||
2339: (URI != NULL))
2340: xmlCreateIntSubset(cur, BAD_CAST "html", ExternalID, URI);
2341: return(cur);
2342: }
2343:
2344: /**
2345: * htmlNewDoc:
2346: * @URI: URI for the dtd, or NULL
2347: * @ExternalID: the external ID of the DTD, or NULL
2348: *
2349: * Creates a new HTML document
2350: *
2351: * Returns a new document
2352: */
2353: htmlDocPtr
2354: htmlNewDoc(const xmlChar *URI, const xmlChar *ExternalID) {
2355: if ((URI == NULL) && (ExternalID == NULL))
2356: return(htmlNewDocNoDtD(
2357: BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd",
2358: BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN"));
2359:
2360: return(htmlNewDocNoDtD(URI, ExternalID));
2361: }
2362:
2363:
2364: /************************************************************************
2365: * *
2366: * The parser itself *
2367: * Relates to http://www.w3.org/TR/html40 *
2368: * *
2369: ************************************************************************/
2370:
2371: /************************************************************************
2372: * *
2373: * The parser itself *
2374: * *
2375: ************************************************************************/
2376:
2377: static const xmlChar * htmlParseNameComplex(xmlParserCtxtPtr ctxt);
2378:
2379: /**
2380: * htmlParseHTMLName:
2381: * @ctxt: an HTML parser context
2382: *
2383: * parse an HTML tag or attribute name, note that we convert it to lowercase
2384: * since HTML names are not case-sensitive.
2385: *
2386: * Returns the Tag Name parsed or NULL
2387: */
2388:
2389: static const xmlChar *
2390: htmlParseHTMLName(htmlParserCtxtPtr ctxt) {
2391: int i = 0;
2392: xmlChar loc[HTML_PARSER_BUFFER_SIZE];
2393:
2394: if (!IS_ASCII_LETTER(CUR) && (CUR != '_') &&
2395: (CUR != ':') && (CUR != '.')) return(NULL);
2396:
2397: while ((i < HTML_PARSER_BUFFER_SIZE) &&
2398: ((IS_ASCII_LETTER(CUR)) || (IS_ASCII_DIGIT(CUR)) ||
2399: (CUR == ':') || (CUR == '-') || (CUR == '_') ||
2400: (CUR == '.'))) {
2401: if ((CUR >= 'A') && (CUR <= 'Z')) loc[i] = CUR + 0x20;
2402: else loc[i] = CUR;
2403: i++;
2404:
2405: NEXT;
2406: }
2407:
2408: return(xmlDictLookup(ctxt->dict, loc, i));
2409: }
2410:
2411:
2412: /**
2413: * htmlParseHTMLName_nonInvasive:
2414: * @ctxt: an HTML parser context
2415: *
2416: * parse an HTML tag or attribute name, note that we convert it to lowercase
2417: * since HTML names are not case-sensitive, this doesn't consume the data
2418: * from the stream, it's a look-ahead
2419: *
2420: * Returns the Tag Name parsed or NULL
2421: */
2422:
2423: static const xmlChar *
2424: htmlParseHTMLName_nonInvasive(htmlParserCtxtPtr ctxt) {
2425: int i = 0;
2426: xmlChar loc[HTML_PARSER_BUFFER_SIZE];
2427:
2428: if (!IS_ASCII_LETTER(NXT(1)) && (NXT(1) != '_') &&
2429: (NXT(1) != ':')) return(NULL);
2430:
2431: while ((i < HTML_PARSER_BUFFER_SIZE) &&
2432: ((IS_ASCII_LETTER(NXT(1+i))) || (IS_ASCII_DIGIT(NXT(1+i))) ||
2433: (NXT(1+i) == ':') || (NXT(1+i) == '-') || (NXT(1+i) == '_'))) {
2434: if ((NXT(1+i) >= 'A') && (NXT(1+i) <= 'Z')) loc[i] = NXT(1+i) + 0x20;
2435: else loc[i] = NXT(1+i);
2436: i++;
2437: }
2438:
2439: return(xmlDictLookup(ctxt->dict, loc, i));
2440: }
2441:
2442:
2443: /**
2444: * htmlParseName:
2445: * @ctxt: an HTML parser context
2446: *
2447: * parse an HTML name, this routine is case sensitive.
2448: *
2449: * Returns the Name parsed or NULL
2450: */
2451:
2452: static const xmlChar *
2453: htmlParseName(htmlParserCtxtPtr ctxt) {
2454: const xmlChar *in;
2455: const xmlChar *ret;
2456: int count = 0;
2457:
2458: GROW;
2459:
2460: /*
2461: * Accelerator for simple ASCII names
2462: */
2463: in = ctxt->input->cur;
2464: if (((*in >= 0x61) && (*in <= 0x7A)) ||
2465: ((*in >= 0x41) && (*in <= 0x5A)) ||
2466: (*in == '_') || (*in == ':')) {
2467: in++;
2468: while (((*in >= 0x61) && (*in <= 0x7A)) ||
2469: ((*in >= 0x41) && (*in <= 0x5A)) ||
2470: ((*in >= 0x30) && (*in <= 0x39)) ||
2471: (*in == '_') || (*in == '-') ||
2472: (*in == ':') || (*in == '.'))
2473: in++;
2474: if ((*in > 0) && (*in < 0x80)) {
2475: count = in - ctxt->input->cur;
2476: ret = xmlDictLookup(ctxt->dict, ctxt->input->cur, count);
2477: ctxt->input->cur = in;
2478: ctxt->nbChars += count;
2479: ctxt->input->col += count;
2480: return(ret);
2481: }
2482: }
2483: return(htmlParseNameComplex(ctxt));
2484: }
2485:
2486: static const xmlChar *
2487: htmlParseNameComplex(xmlParserCtxtPtr ctxt) {
2488: int len = 0, l;
2489: int c;
2490: int count = 0;
2491:
2492: /*
2493: * Handler for more complex cases
2494: */
2495: GROW;
2496: c = CUR_CHAR(l);
2497: if ((c == ' ') || (c == '>') || (c == '/') || /* accelerators */
2498: (!IS_LETTER(c) && (c != '_') &&
2499: (c != ':'))) {
2500: return(NULL);
2501: }
2502:
2503: while ((c != ' ') && (c != '>') && (c != '/') && /* test bigname.xml */
2504: ((IS_LETTER(c)) || (IS_DIGIT(c)) ||
2505: (c == '.') || (c == '-') ||
2506: (c == '_') || (c == ':') ||
2507: (IS_COMBINING(c)) ||
2508: (IS_EXTENDER(c)))) {
2509: if (count++ > 100) {
2510: count = 0;
2511: GROW;
2512: }
2513: len += l;
2514: NEXTL(l);
2515: c = CUR_CHAR(l);
2516: }
2517: return(xmlDictLookup(ctxt->dict, ctxt->input->cur - len, len));
2518: }
2519:
2520:
2521: /**
2522: * htmlParseHTMLAttribute:
2523: * @ctxt: an HTML parser context
2524: * @stop: a char stop value
2525: *
2526: * parse an HTML attribute value till the stop (quote), if
2527: * stop is 0 then it stops at the first space
2528: *
2529: * Returns the attribute parsed or NULL
2530: */
2531:
2532: static xmlChar *
2533: htmlParseHTMLAttribute(htmlParserCtxtPtr ctxt, const xmlChar stop) {
2534: xmlChar *buffer = NULL;
2535: int buffer_size = 0;
2536: xmlChar *out = NULL;
2537: const xmlChar *name = NULL;
2538: const xmlChar *cur = NULL;
2539: const htmlEntityDesc * ent;
2540:
2541: /*
2542: * allocate a translation buffer.
2543: */
2544: buffer_size = HTML_PARSER_BUFFER_SIZE;
2545: buffer = (xmlChar *) xmlMallocAtomic(buffer_size * sizeof(xmlChar));
2546: if (buffer == NULL) {
2547: htmlErrMemory(ctxt, "buffer allocation failed\n");
2548: return(NULL);
2549: }
2550: out = buffer;
2551:
2552: /*
2553: * Ok loop until we reach one of the ending chars
2554: */
2555: while ((CUR != 0) && (CUR != stop)) {
2556: if ((stop == 0) && (CUR == '>')) break;
2557: if ((stop == 0) && (IS_BLANK_CH(CUR))) break;
2558: if (CUR == '&') {
2559: if (NXT(1) == '#') {
2560: unsigned int c;
2561: int bits;
2562:
2563: c = htmlParseCharRef(ctxt);
2564: if (c < 0x80)
2565: { *out++ = c; bits= -6; }
2566: else if (c < 0x800)
2567: { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; }
2568: else if (c < 0x10000)
2569: { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; }
2570: else
2571: { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; }
2572:
2573: for ( ; bits >= 0; bits-= 6) {
2574: *out++ = ((c >> bits) & 0x3F) | 0x80;
2575: }
2576:
2577: if (out - buffer > buffer_size - 100) {
2578: int indx = out - buffer;
2579:
2580: growBuffer(buffer);
2581: out = &buffer[indx];
2582: }
2583: } else {
2584: ent = htmlParseEntityRef(ctxt, &name);
2585: if (name == NULL) {
2586: *out++ = '&';
2587: if (out - buffer > buffer_size - 100) {
2588: int indx = out - buffer;
2589:
2590: growBuffer(buffer);
2591: out = &buffer[indx];
2592: }
2593: } else if (ent == NULL) {
2594: *out++ = '&';
2595: cur = name;
2596: while (*cur != 0) {
2597: if (out - buffer > buffer_size - 100) {
2598: int indx = out - buffer;
2599:
2600: growBuffer(buffer);
2601: out = &buffer[indx];
2602: }
2603: *out++ = *cur++;
2604: }
2605: } else {
2606: unsigned int c;
2607: int bits;
2608:
2609: if (out - buffer > buffer_size - 100) {
2610: int indx = out - buffer;
2611:
2612: growBuffer(buffer);
2613: out = &buffer[indx];
2614: }
2615: c = ent->value;
2616: if (c < 0x80)
2617: { *out++ = c; bits= -6; }
2618: else if (c < 0x800)
2619: { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; }
2620: else if (c < 0x10000)
2621: { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; }
2622: else
2623: { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; }
2624:
2625: for ( ; bits >= 0; bits-= 6) {
2626: *out++ = ((c >> bits) & 0x3F) | 0x80;
2627: }
2628: }
2629: }
2630: } else {
2631: unsigned int c;
2632: int bits, l;
2633:
2634: if (out - buffer > buffer_size - 100) {
2635: int indx = out - buffer;
2636:
2637: growBuffer(buffer);
2638: out = &buffer[indx];
2639: }
2640: c = CUR_CHAR(l);
2641: if (c < 0x80)
2642: { *out++ = c; bits= -6; }
2643: else if (c < 0x800)
2644: { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; }
2645: else if (c < 0x10000)
2646: { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; }
2647: else
2648: { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; }
2649:
2650: for ( ; bits >= 0; bits-= 6) {
2651: *out++ = ((c >> bits) & 0x3F) | 0x80;
2652: }
2653: NEXT;
2654: }
2655: }
2656: *out = 0;
2657: return(buffer);
2658: }
2659:
2660: /**
2661: * htmlParseEntityRef:
2662: * @ctxt: an HTML parser context
2663: * @str: location to store the entity name
2664: *
2665: * parse an HTML ENTITY references
2666: *
2667: * [68] EntityRef ::= '&' Name ';'
2668: *
2669: * Returns the associated htmlEntityDescPtr if found, or NULL otherwise,
2670: * if non-NULL *str will have to be freed by the caller.
2671: */
2672: const htmlEntityDesc *
2673: htmlParseEntityRef(htmlParserCtxtPtr ctxt, const xmlChar **str) {
2674: const xmlChar *name;
2675: const htmlEntityDesc * ent = NULL;
2676:
2677: if (str != NULL) *str = NULL;
2678: if ((ctxt == NULL) || (ctxt->input == NULL)) return(NULL);
2679:
2680: if (CUR == '&') {
2681: NEXT;
2682: name = htmlParseName(ctxt);
2683: if (name == NULL) {
2684: htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
2685: "htmlParseEntityRef: no name\n", NULL, NULL);
2686: } else {
2687: GROW;
2688: if (CUR == ';') {
2689: if (str != NULL)
2690: *str = name;
2691:
2692: /*
2693: * Lookup the entity in the table.
2694: */
2695: ent = htmlEntityLookup(name);
2696: if (ent != NULL) /* OK that's ugly !!! */
2697: NEXT;
2698: } else {
2699: htmlParseErr(ctxt, XML_ERR_ENTITYREF_SEMICOL_MISSING,
2700: "htmlParseEntityRef: expecting ';'\n",
2701: NULL, NULL);
2702: if (str != NULL)
2703: *str = name;
2704: }
2705: }
2706: }
2707: return(ent);
2708: }
2709:
2710: /**
2711: * htmlParseAttValue:
2712: * @ctxt: an HTML parser context
2713: *
2714: * parse a value for an attribute
2715: * Note: the parser won't do substitution of entities here, this
2716: * will be handled later in xmlStringGetNodeList, unless it was
2717: * asked for ctxt->replaceEntities != 0
2718: *
2719: * Returns the AttValue parsed or NULL.
2720: */
2721:
2722: static xmlChar *
2723: htmlParseAttValue(htmlParserCtxtPtr ctxt) {
2724: xmlChar *ret = NULL;
2725:
2726: if (CUR == '"') {
2727: NEXT;
2728: ret = htmlParseHTMLAttribute(ctxt, '"');
2729: if (CUR != '"') {
2730: htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
2731: "AttValue: \" expected\n", NULL, NULL);
2732: } else
2733: NEXT;
2734: } else if (CUR == '\'') {
2735: NEXT;
2736: ret = htmlParseHTMLAttribute(ctxt, '\'');
2737: if (CUR != '\'') {
2738: htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
2739: "AttValue: ' expected\n", NULL, NULL);
2740: } else
2741: NEXT;
2742: } else {
2743: /*
2744: * That's an HTMLism, the attribute value may not be quoted
2745: */
2746: ret = htmlParseHTMLAttribute(ctxt, 0);
2747: if (ret == NULL) {
2748: htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_WITHOUT_VALUE,
2749: "AttValue: no value found\n", NULL, NULL);
2750: }
2751: }
2752: return(ret);
2753: }
2754:
2755: /**
2756: * htmlParseSystemLiteral:
2757: * @ctxt: an HTML parser context
2758: *
2759: * parse an HTML Literal
2760: *
2761: * [11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'")
2762: *
2763: * Returns the SystemLiteral parsed or NULL
2764: */
2765:
2766: static xmlChar *
2767: htmlParseSystemLiteral(htmlParserCtxtPtr ctxt) {
2768: const xmlChar *q;
2769: xmlChar *ret = NULL;
2770:
2771: if (CUR == '"') {
2772: NEXT;
2773: q = CUR_PTR;
2774: while ((IS_CHAR_CH(CUR)) && (CUR != '"'))
2775: NEXT;
2776: if (!IS_CHAR_CH(CUR)) {
2777: htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED,
2778: "Unfinished SystemLiteral\n", NULL, NULL);
2779: } else {
2780: ret = xmlStrndup(q, CUR_PTR - q);
2781: NEXT;
2782: }
2783: } else if (CUR == '\'') {
2784: NEXT;
2785: q = CUR_PTR;
2786: while ((IS_CHAR_CH(CUR)) && (CUR != '\''))
2787: NEXT;
2788: if (!IS_CHAR_CH(CUR)) {
2789: htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED,
2790: "Unfinished SystemLiteral\n", NULL, NULL);
2791: } else {
2792: ret = xmlStrndup(q, CUR_PTR - q);
2793: NEXT;
2794: }
2795: } else {
2796: htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_STARTED,
2797: " or ' expected\n", NULL, NULL);
2798: }
2799:
2800: return(ret);
2801: }
2802:
2803: /**
2804: * htmlParsePubidLiteral:
2805: * @ctxt: an HTML parser context
2806: *
2807: * parse an HTML public literal
2808: *
2809: * [12] PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'"
2810: *
2811: * Returns the PubidLiteral parsed or NULL.
2812: */
2813:
2814: static xmlChar *
2815: htmlParsePubidLiteral(htmlParserCtxtPtr ctxt) {
2816: const xmlChar *q;
2817: xmlChar *ret = NULL;
2818: /*
2819: * Name ::= (Letter | '_') (NameChar)*
2820: */
2821: if (CUR == '"') {
2822: NEXT;
2823: q = CUR_PTR;
2824: while (IS_PUBIDCHAR_CH(CUR)) NEXT;
2825: if (CUR != '"') {
2826: htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED,
2827: "Unfinished PubidLiteral\n", NULL, NULL);
2828: } else {
2829: ret = xmlStrndup(q, CUR_PTR - q);
2830: NEXT;
2831: }
2832: } else if (CUR == '\'') {
2833: NEXT;
2834: q = CUR_PTR;
2835: while ((IS_PUBIDCHAR_CH(CUR)) && (CUR != '\''))
2836: NEXT;
2837: if (CUR != '\'') {
2838: htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED,
2839: "Unfinished PubidLiteral\n", NULL, NULL);
2840: } else {
2841: ret = xmlStrndup(q, CUR_PTR - q);
2842: NEXT;
2843: }
2844: } else {
2845: htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_STARTED,
2846: "PubidLiteral \" or ' expected\n", NULL, NULL);
2847: }
2848:
2849: return(ret);
2850: }
2851:
2852: /**
2853: * htmlParseScript:
2854: * @ctxt: an HTML parser context
2855: *
2856: * parse the content of an HTML SCRIPT or STYLE element
2857: * http://www.w3.org/TR/html4/sgml/dtd.html#Script
2858: * http://www.w3.org/TR/html4/sgml/dtd.html#StyleSheet
2859: * http://www.w3.org/TR/html4/types.html#type-script
2860: * http://www.w3.org/TR/html4/types.html#h-6.15
2861: * http://www.w3.org/TR/html4/appendix/notes.html#h-B.3.2.1
2862: *
2863: * Script data ( %Script; in the DTD) can be the content of the SCRIPT
2864: * element and the value of intrinsic event attributes. User agents must
2865: * not evaluate script data as HTML markup but instead must pass it on as
2866: * data to a script engine.
2867: * NOTES:
2868: * - The content is passed like CDATA
2869: * - the attributes for style and scripting "onXXX" are also described
2870: * as CDATA but SGML allows entities references in attributes so their
2871: * processing is identical as other attributes
2872: */
2873: static void
2874: htmlParseScript(htmlParserCtxtPtr ctxt) {
2875: xmlChar buf[HTML_PARSER_BIG_BUFFER_SIZE + 5];
2876: int nbchar = 0;
2877: int cur,l;
2878:
2879: SHRINK;
2880: cur = CUR_CHAR(l);
2881: while (IS_CHAR_CH(cur)) {
2882: if ((cur == '<') && (NXT(1) == '/')) {
2883: /*
2884: * One should break here, the specification is clear:
2885: * Authors should therefore escape "</" within the content.
2886: * Escape mechanisms are specific to each scripting or
2887: * style sheet language.
2888: *
2889: * In recovery mode, only break if end tag match the
2890: * current tag, effectively ignoring all tags inside the
2891: * script/style block and treating the entire block as
2892: * CDATA.
2893: */
2894: if (ctxt->recovery) {
2895: if (xmlStrncasecmp(ctxt->name, ctxt->input->cur+2,
2896: xmlStrlen(ctxt->name)) == 0)
2897: {
2898: break; /* while */
2899: } else {
2900: htmlParseErr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
2901: "Element %s embeds close tag\n",
2902: ctxt->name, NULL);
2903: }
2904: } else {
2905: if (((NXT(2) >= 'A') && (NXT(2) <= 'Z')) ||
2906: ((NXT(2) >= 'a') && (NXT(2) <= 'z')))
2907: {
2908: break; /* while */
2909: }
2910: }
2911: }
2912: COPY_BUF(l,buf,nbchar,cur);
2913: if (nbchar >= HTML_PARSER_BIG_BUFFER_SIZE) {
2914: if (ctxt->sax->cdataBlock!= NULL) {
2915: /*
2916: * Insert as CDATA, which is the same as HTML_PRESERVE_NODE
2917: */
2918: ctxt->sax->cdataBlock(ctxt->userData, buf, nbchar);
2919: } else if (ctxt->sax->characters != NULL) {
2920: ctxt->sax->characters(ctxt->userData, buf, nbchar);
2921: }
2922: nbchar = 0;
2923: }
2924: GROW;
2925: NEXTL(l);
2926: cur = CUR_CHAR(l);
2927: }
2928:
2929: if ((!(IS_CHAR_CH(cur))) && (!((cur == 0) && (ctxt->progressive)))) {
2930: htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
2931: "Invalid char in CDATA 0x%X\n", cur);
2932: if (ctxt->input->cur < ctxt->input->end) {
2933: NEXT;
2934: }
2935: }
2936:
2937: if ((nbchar != 0) && (ctxt->sax != NULL) && (!ctxt->disableSAX)) {
2938: if (ctxt->sax->cdataBlock!= NULL) {
2939: /*
2940: * Insert as CDATA, which is the same as HTML_PRESERVE_NODE
2941: */
2942: ctxt->sax->cdataBlock(ctxt->userData, buf, nbchar);
2943: } else if (ctxt->sax->characters != NULL) {
2944: ctxt->sax->characters(ctxt->userData, buf, nbchar);
2945: }
2946: }
2947: }
2948:
2949:
2950: /**
2951: * htmlParseCharData:
2952: * @ctxt: an HTML parser context
2953: *
2954: * parse a CharData section.
2955: * if we are within a CDATA section ']]>' marks an end of section.
2956: *
2957: * [14] CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*)
2958: */
2959:
2960: static void
2961: htmlParseCharData(htmlParserCtxtPtr ctxt) {
2962: xmlChar buf[HTML_PARSER_BIG_BUFFER_SIZE + 5];
2963: int nbchar = 0;
2964: int cur, l;
2965: int chunk = 0;
2966:
2967: SHRINK;
2968: cur = CUR_CHAR(l);
2969: while (((cur != '<') || (ctxt->token == '<')) &&
2970: ((cur != '&') || (ctxt->token == '&')) &&
2971: (cur != 0)) {
2972: if (!(IS_CHAR(cur))) {
2973: htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
2974: "Invalid char in CDATA 0x%X\n", cur);
2975: } else {
2976: COPY_BUF(l,buf,nbchar,cur);
2977: }
2978: if (nbchar >= HTML_PARSER_BIG_BUFFER_SIZE) {
2979: /*
2980: * Ok the segment is to be consumed as chars.
2981: */
2982: if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
2983: if (areBlanks(ctxt, buf, nbchar)) {
2984: if (ctxt->keepBlanks) {
2985: if (ctxt->sax->characters != NULL)
2986: ctxt->sax->characters(ctxt->userData, buf, nbchar);
2987: } else {
2988: if (ctxt->sax->ignorableWhitespace != NULL)
2989: ctxt->sax->ignorableWhitespace(ctxt->userData,
2990: buf, nbchar);
2991: }
2992: } else {
2993: htmlCheckParagraph(ctxt);
2994: if (ctxt->sax->characters != NULL)
2995: ctxt->sax->characters(ctxt->userData, buf, nbchar);
2996: }
2997: }
2998: nbchar = 0;
2999: }
3000: NEXTL(l);
3001: chunk++;
3002: if (chunk > HTML_PARSER_BUFFER_SIZE) {
3003: chunk = 0;
3004: SHRINK;
3005: GROW;
3006: }
3007: cur = CUR_CHAR(l);
3008: if (cur == 0) {
3009: SHRINK;
3010: GROW;
3011: cur = CUR_CHAR(l);
3012: }
3013: }
3014: if (nbchar != 0) {
3015: buf[nbchar] = 0;
3016:
3017: /*
3018: * Ok the segment is to be consumed as chars.
3019: */
3020: if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
3021: if (areBlanks(ctxt, buf, nbchar)) {
3022: if (ctxt->keepBlanks) {
3023: if (ctxt->sax->characters != NULL)
3024: ctxt->sax->characters(ctxt->userData, buf, nbchar);
3025: } else {
3026: if (ctxt->sax->ignorableWhitespace != NULL)
3027: ctxt->sax->ignorableWhitespace(ctxt->userData,
3028: buf, nbchar);
3029: }
3030: } else {
3031: htmlCheckParagraph(ctxt);
3032: if (ctxt->sax->characters != NULL)
3033: ctxt->sax->characters(ctxt->userData, buf, nbchar);
3034: }
3035: }
3036: } else {
3037: /*
3038: * Loop detection
3039: */
3040: if (cur == 0)
3041: ctxt->instate = XML_PARSER_EOF;
3042: }
3043: }
3044:
3045: /**
3046: * htmlParseExternalID:
3047: * @ctxt: an HTML parser context
3048: * @publicID: a xmlChar** receiving PubidLiteral
3049: *
3050: * Parse an External ID or a Public ID
3051: *
3052: * [75] ExternalID ::= 'SYSTEM' S SystemLiteral
3053: * | 'PUBLIC' S PubidLiteral S SystemLiteral
3054: *
3055: * [83] PublicID ::= 'PUBLIC' S PubidLiteral
3056: *
3057: * Returns the function returns SystemLiteral and in the second
3058: * case publicID receives PubidLiteral, is strict is off
3059: * it is possible to return NULL and have publicID set.
3060: */
3061:
3062: static xmlChar *
3063: htmlParseExternalID(htmlParserCtxtPtr ctxt, xmlChar **publicID) {
3064: xmlChar *URI = NULL;
3065:
3066: if ((UPPER == 'S') && (UPP(1) == 'Y') &&
3067: (UPP(2) == 'S') && (UPP(3) == 'T') &&
3068: (UPP(4) == 'E') && (UPP(5) == 'M')) {
3069: SKIP(6);
3070: if (!IS_BLANK_CH(CUR)) {
3071: htmlParseErr(ctxt, XML_ERR_SPACE_REQUIRED,
3072: "Space required after 'SYSTEM'\n", NULL, NULL);
3073: }
3074: SKIP_BLANKS;
3075: URI = htmlParseSystemLiteral(ctxt);
3076: if (URI == NULL) {
3077: htmlParseErr(ctxt, XML_ERR_URI_REQUIRED,
3078: "htmlParseExternalID: SYSTEM, no URI\n", NULL, NULL);
3079: }
3080: } else if ((UPPER == 'P') && (UPP(1) == 'U') &&
3081: (UPP(2) == 'B') && (UPP(3) == 'L') &&
3082: (UPP(4) == 'I') && (UPP(5) == 'C')) {
3083: SKIP(6);
3084: if (!IS_BLANK_CH(CUR)) {
3085: htmlParseErr(ctxt, XML_ERR_SPACE_REQUIRED,
3086: "Space required after 'PUBLIC'\n", NULL, NULL);
3087: }
3088: SKIP_BLANKS;
3089: *publicID = htmlParsePubidLiteral(ctxt);
3090: if (*publicID == NULL) {
3091: htmlParseErr(ctxt, XML_ERR_PUBID_REQUIRED,
3092: "htmlParseExternalID: PUBLIC, no Public Identifier\n",
3093: NULL, NULL);
3094: }
3095: SKIP_BLANKS;
3096: if ((CUR == '"') || (CUR == '\'')) {
3097: URI = htmlParseSystemLiteral(ctxt);
3098: }
3099: }
3100: return(URI);
3101: }
3102:
3103: /**
3104: * xmlParsePI:
3105: * @ctxt: an XML parser context
3106: *
3107: * parse an XML Processing Instruction.
3108: *
3109: * [16] PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'
3110: */
3111: static void
3112: htmlParsePI(htmlParserCtxtPtr ctxt) {
3113: xmlChar *buf = NULL;
3114: int len = 0;
3115: int size = HTML_PARSER_BUFFER_SIZE;
3116: int cur, l;
3117: const xmlChar *target;
3118: xmlParserInputState state;
3119: int count = 0;
3120:
3121: if ((RAW == '<') && (NXT(1) == '?')) {
3122: state = ctxt->instate;
3123: ctxt->instate = XML_PARSER_PI;
3124: /*
3125: * this is a Processing Instruction.
3126: */
3127: SKIP(2);
3128: SHRINK;
3129:
3130: /*
3131: * Parse the target name and check for special support like
3132: * namespace.
3133: */
3134: target = htmlParseName(ctxt);
3135: if (target != NULL) {
3136: if (RAW == '>') {
3137: SKIP(1);
3138:
3139: /*
3140: * SAX: PI detected.
3141: */
3142: if ((ctxt->sax) && (!ctxt->disableSAX) &&
3143: (ctxt->sax->processingInstruction != NULL))
3144: ctxt->sax->processingInstruction(ctxt->userData,
3145: target, NULL);
3146: ctxt->instate = state;
3147: return;
3148: }
3149: buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar));
3150: if (buf == NULL) {
3151: htmlErrMemory(ctxt, NULL);
3152: ctxt->instate = state;
3153: return;
3154: }
3155: cur = CUR;
3156: if (!IS_BLANK(cur)) {
3157: htmlParseErr(ctxt, XML_ERR_SPACE_REQUIRED,
3158: "ParsePI: PI %s space expected\n", target, NULL);
3159: }
3160: SKIP_BLANKS;
3161: cur = CUR_CHAR(l);
3162: while (IS_CHAR(cur) && (cur != '>')) {
3163: if (len + 5 >= size) {
3164: xmlChar *tmp;
3165:
3166: size *= 2;
3167: tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar));
3168: if (tmp == NULL) {
3169: htmlErrMemory(ctxt, NULL);
3170: xmlFree(buf);
3171: ctxt->instate = state;
3172: return;
3173: }
3174: buf = tmp;
3175: }
3176: count++;
3177: if (count > 50) {
3178: GROW;
3179: count = 0;
3180: }
3181: COPY_BUF(l,buf,len,cur);
3182: NEXTL(l);
3183: cur = CUR_CHAR(l);
3184: if (cur == 0) {
3185: SHRINK;
3186: GROW;
3187: cur = CUR_CHAR(l);
3188: }
3189: }
3190: buf[len] = 0;
3191: if (cur != '>') {
3192: htmlParseErr(ctxt, XML_ERR_PI_NOT_FINISHED,
3193: "ParsePI: PI %s never end ...\n", target, NULL);
3194: } else {
3195: SKIP(1);
3196:
3197: /*
3198: * SAX: PI detected.
3199: */
3200: if ((ctxt->sax) && (!ctxt->disableSAX) &&
3201: (ctxt->sax->processingInstruction != NULL))
3202: ctxt->sax->processingInstruction(ctxt->userData,
3203: target, buf);
3204: }
3205: xmlFree(buf);
3206: } else {
3207: htmlParseErr(ctxt, XML_ERR_PI_NOT_STARTED,
3208: "PI is not started correctly", NULL, NULL);
3209: }
3210: ctxt->instate = state;
3211: }
3212: }
3213:
3214: /**
3215: * htmlParseComment:
3216: * @ctxt: an HTML parser context
3217: *
3218: * Parse an XML (SGML) comment <!-- .... -->
3219: *
3220: * [15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
3221: */
3222: static void
3223: htmlParseComment(htmlParserCtxtPtr ctxt) {
3224: xmlChar *buf = NULL;
3225: int len;
3226: int size = HTML_PARSER_BUFFER_SIZE;
3227: int q, ql;
3228: int r, rl;
3229: int cur, l;
3230: xmlParserInputState state;
3231:
3232: /*
3233: * Check that there is a comment right here.
3234: */
3235: if ((RAW != '<') || (NXT(1) != '!') ||
3236: (NXT(2) != '-') || (NXT(3) != '-')) return;
3237:
3238: state = ctxt->instate;
3239: ctxt->instate = XML_PARSER_COMMENT;
3240: SHRINK;
3241: SKIP(4);
3242: buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar));
3243: if (buf == NULL) {
3244: htmlErrMemory(ctxt, "buffer allocation failed\n");
3245: ctxt->instate = state;
3246: return;
3247: }
3248: q = CUR_CHAR(ql);
3249: NEXTL(ql);
3250: r = CUR_CHAR(rl);
3251: NEXTL(rl);
3252: cur = CUR_CHAR(l);
3253: len = 0;
3254: while (IS_CHAR(cur) &&
3255: ((cur != '>') ||
3256: (r != '-') || (q != '-'))) {
3257: if (len + 5 >= size) {
3258: xmlChar *tmp;
3259:
3260: size *= 2;
3261: tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar));
3262: if (tmp == NULL) {
3263: xmlFree(buf);
3264: htmlErrMemory(ctxt, "growing buffer failed\n");
3265: ctxt->instate = state;
3266: return;
3267: }
3268: buf = tmp;
3269: }
3270: COPY_BUF(ql,buf,len,q);
3271: q = r;
3272: ql = rl;
3273: r = cur;
3274: rl = l;
3275: NEXTL(l);
3276: cur = CUR_CHAR(l);
3277: if (cur == 0) {
3278: SHRINK;
3279: GROW;
3280: cur = CUR_CHAR(l);
3281: }
3282: }
3283: buf[len] = 0;
3284: if (!IS_CHAR(cur)) {
3285: htmlParseErr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
3286: "Comment not terminated \n<!--%.50s\n", buf, NULL);
3287: xmlFree(buf);
3288: } else {
3289: NEXT;
3290: if ((ctxt->sax != NULL) && (ctxt->sax->comment != NULL) &&
3291: (!ctxt->disableSAX))
3292: ctxt->sax->comment(ctxt->userData, buf);
3293: xmlFree(buf);
3294: }
3295: ctxt->instate = state;
3296: }
3297:
3298: /**
3299: * htmlParseCharRef:
3300: * @ctxt: an HTML parser context
3301: *
3302: * parse Reference declarations
3303: *
3304: * [66] CharRef ::= '&#' [0-9]+ ';' |
3305: * '&#x' [0-9a-fA-F]+ ';'
3306: *
3307: * Returns the value parsed (as an int)
3308: */
3309: int
3310: htmlParseCharRef(htmlParserCtxtPtr ctxt) {
3311: int val = 0;
3312:
3313: if ((ctxt == NULL) || (ctxt->input == NULL)) {
3314: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
3315: "htmlParseCharRef: context error\n",
3316: NULL, NULL);
3317: return(0);
3318: }
3319: if ((CUR == '&') && (NXT(1) == '#') &&
3320: ((NXT(2) == 'x') || NXT(2) == 'X')) {
3321: SKIP(3);
3322: while (CUR != ';') {
3323: if ((CUR >= '0') && (CUR <= '9'))
3324: val = val * 16 + (CUR - '0');
3325: else if ((CUR >= 'a') && (CUR <= 'f'))
3326: val = val * 16 + (CUR - 'a') + 10;
3327: else if ((CUR >= 'A') && (CUR <= 'F'))
3328: val = val * 16 + (CUR - 'A') + 10;
3329: else {
3330: htmlParseErr(ctxt, XML_ERR_INVALID_HEX_CHARREF,
3331: "htmlParseCharRef: missing semicolon\n",
3332: NULL, NULL);
3333: break;
3334: }
3335: NEXT;
3336: }
3337: if (CUR == ';')
3338: NEXT;
3339: } else if ((CUR == '&') && (NXT(1) == '#')) {
3340: SKIP(2);
3341: while (CUR != ';') {
3342: if ((CUR >= '0') && (CUR <= '9'))
3343: val = val * 10 + (CUR - '0');
3344: else {
3345: htmlParseErr(ctxt, XML_ERR_INVALID_DEC_CHARREF,
3346: "htmlParseCharRef: missing semicolon\n",
3347: NULL, NULL);
3348: break;
3349: }
3350: NEXT;
3351: }
3352: if (CUR == ';')
3353: NEXT;
3354: } else {
3355: htmlParseErr(ctxt, XML_ERR_INVALID_CHARREF,
3356: "htmlParseCharRef: invalid value\n", NULL, NULL);
3357: }
3358: /*
3359: * Check the value IS_CHAR ...
3360: */
3361: if (IS_CHAR(val)) {
3362: return(val);
3363: } else {
3364: htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
3365: "htmlParseCharRef: invalid xmlChar value %d\n",
3366: val);
3367: }
3368: return(0);
3369: }
3370:
3371:
3372: /**
3373: * htmlParseDocTypeDecl:
3374: * @ctxt: an HTML parser context
3375: *
3376: * parse a DOCTYPE declaration
3377: *
3378: * [28] doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S?
3379: * ('[' (markupdecl | PEReference | S)* ']' S?)? '>'
3380: */
3381:
3382: static void
3383: htmlParseDocTypeDecl(htmlParserCtxtPtr ctxt) {
3384: const xmlChar *name;
3385: xmlChar *ExternalID = NULL;
3386: xmlChar *URI = NULL;
3387:
3388: /*
3389: * We know that '<!DOCTYPE' has been detected.
3390: */
3391: SKIP(9);
3392:
3393: SKIP_BLANKS;
3394:
3395: /*
3396: * Parse the DOCTYPE name.
3397: */
3398: name = htmlParseName(ctxt);
3399: if (name == NULL) {
3400: htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
3401: "htmlParseDocTypeDecl : no DOCTYPE name !\n",
3402: NULL, NULL);
3403: }
3404: /*
3405: * Check that upper(name) == "HTML" !!!!!!!!!!!!!
3406: */
3407:
3408: SKIP_BLANKS;
3409:
3410: /*
3411: * Check for SystemID and ExternalID
3412: */
3413: URI = htmlParseExternalID(ctxt, &ExternalID);
3414: SKIP_BLANKS;
3415:
3416: /*
3417: * We should be at the end of the DOCTYPE declaration.
3418: */
3419: if (CUR != '>') {
3420: htmlParseErr(ctxt, XML_ERR_DOCTYPE_NOT_FINISHED,
3421: "DOCTYPE improperly terminated\n", NULL, NULL);
3422: /* We shouldn't try to resynchronize ... */
3423: }
3424: NEXT;
3425:
3426: /*
3427: * Create or update the document accordingly to the DOCTYPE
3428: */
3429: if ((ctxt->sax != NULL) && (ctxt->sax->internalSubset != NULL) &&
3430: (!ctxt->disableSAX))
3431: ctxt->sax->internalSubset(ctxt->userData, name, ExternalID, URI);
3432:
3433: /*
3434: * Cleanup, since we don't use all those identifiers
3435: */
3436: if (URI != NULL) xmlFree(URI);
3437: if (ExternalID != NULL) xmlFree(ExternalID);
3438: }
3439:
3440: /**
3441: * htmlParseAttribute:
3442: * @ctxt: an HTML parser context
3443: * @value: a xmlChar ** used to store the value of the attribute
3444: *
3445: * parse an attribute
3446: *
3447: * [41] Attribute ::= Name Eq AttValue
3448: *
3449: * [25] Eq ::= S? '=' S?
3450: *
3451: * With namespace:
3452: *
3453: * [NS 11] Attribute ::= QName Eq AttValue
3454: *
3455: * Also the case QName == xmlns:??? is handled independently as a namespace
3456: * definition.
3457: *
3458: * Returns the attribute name, and the value in *value.
3459: */
3460:
3461: static const xmlChar *
3462: htmlParseAttribute(htmlParserCtxtPtr ctxt, xmlChar **value) {
3463: const xmlChar *name;
3464: xmlChar *val = NULL;
3465:
3466: *value = NULL;
3467: name = htmlParseHTMLName(ctxt);
3468: if (name == NULL) {
3469: htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
3470: "error parsing attribute name\n", NULL, NULL);
3471: return(NULL);
3472: }
3473:
3474: /*
3475: * read the value
3476: */
3477: SKIP_BLANKS;
3478: if (CUR == '=') {
3479: NEXT;
3480: SKIP_BLANKS;
3481: val = htmlParseAttValue(ctxt);
3482: }
3483:
3484: *value = val;
3485: return(name);
3486: }
3487:
3488: /**
3489: * htmlCheckEncodingDirect:
3490: * @ctxt: an HTML parser context
3491: * @attvalue: the attribute value
3492: *
3493: * Checks an attribute value to detect
3494: * the encoding
3495: * If a new encoding is detected the parser is switched to decode
3496: * it and pass UTF8
3497: */
3498: static void
3499: htmlCheckEncodingDirect(htmlParserCtxtPtr ctxt, const xmlChar *encoding) {
3500:
3501: if ((ctxt == NULL) || (encoding == NULL) ||
3502: (ctxt->options & HTML_PARSE_IGNORE_ENC))
3503: return;
3504:
3505: /* do not change encoding */
3506: if (ctxt->input->encoding != NULL)
3507: return;
3508:
3509: if (encoding != NULL) {
3510: xmlCharEncoding enc;
3511: xmlCharEncodingHandlerPtr handler;
3512:
3513: while ((*encoding == ' ') || (*encoding == '\t')) encoding++;
3514:
3515: if (ctxt->input->encoding != NULL)
3516: xmlFree((xmlChar *) ctxt->input->encoding);
3517: ctxt->input->encoding = xmlStrdup(encoding);
3518:
3519: enc = xmlParseCharEncoding((const char *) encoding);
3520: /*
3521: * registered set of known encodings
3522: */
3523: if (enc != XML_CHAR_ENCODING_ERROR) {
3524: if (((enc == XML_CHAR_ENCODING_UTF16LE) ||
3525: (enc == XML_CHAR_ENCODING_UTF16BE) ||
3526: (enc == XML_CHAR_ENCODING_UCS4LE) ||
3527: (enc == XML_CHAR_ENCODING_UCS4BE)) &&
3528: (ctxt->input->buf != NULL) &&
3529: (ctxt->input->buf->encoder == NULL)) {
3530: htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
3531: "htmlCheckEncoding: wrong encoding meta\n",
3532: NULL, NULL);
3533: } else {
3534: xmlSwitchEncoding(ctxt, enc);
3535: }
3536: ctxt->charset = XML_CHAR_ENCODING_UTF8;
3537: } else {
3538: /*
3539: * fallback for unknown encodings
3540: */
3541: handler = xmlFindCharEncodingHandler((const char *) encoding);
3542: if (handler != NULL) {
3543: xmlSwitchToEncoding(ctxt, handler);
3544: ctxt->charset = XML_CHAR_ENCODING_UTF8;
3545: } else {
3546: htmlParseErr(ctxt, XML_ERR_UNSUPPORTED_ENCODING,
3547: "htmlCheckEncoding: unknown encoding %s\n",
3548: encoding, NULL);
3549: }
3550: }
3551:
3552: if ((ctxt->input->buf != NULL) &&
3553: (ctxt->input->buf->encoder != NULL) &&
3554: (ctxt->input->buf->raw != NULL) &&
3555: (ctxt->input->buf->buffer != NULL)) {
3556: int nbchars;
3557: int processed;
3558:
3559: /*
3560: * convert as much as possible to the parser reading buffer.
3561: */
3562: processed = ctxt->input->cur - ctxt->input->base;
3563: xmlBufShrink(ctxt->input->buf->buffer, processed);
3564: nbchars = xmlCharEncInput(ctxt->input->buf, 1);
3565: if (nbchars < 0) {
3566: htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
3567: "htmlCheckEncoding: encoder error\n",
3568: NULL, NULL);
3569: }
3570: xmlBufResetInput(ctxt->input->buf->buffer, ctxt->input);
3571: }
3572: }
3573: }
3574:
3575: /**
3576: * htmlCheckEncoding:
3577: * @ctxt: an HTML parser context
3578: * @attvalue: the attribute value
3579: *
3580: * Checks an http-equiv attribute from a Meta tag to detect
3581: * the encoding
3582: * If a new encoding is detected the parser is switched to decode
3583: * it and pass UTF8
3584: */
3585: static void
3586: htmlCheckEncoding(htmlParserCtxtPtr ctxt, const xmlChar *attvalue) {
3587: const xmlChar *encoding;
3588:
3589: if (!attvalue)
3590: return;
3591:
3592: encoding = xmlStrcasestr(attvalue, BAD_CAST"charset");
3593: if (encoding != NULL) {
3594: encoding += 7;
3595: }
3596: /*
3597: * skip blank
3598: */
3599: if (encoding && IS_BLANK_CH(*encoding))
3600: encoding = xmlStrcasestr(attvalue, BAD_CAST"=");
3601: if (encoding && *encoding == '=') {
3602: encoding ++;
3603: htmlCheckEncodingDirect(ctxt, encoding);
3604: }
3605: }
3606:
3607: /**
3608: * htmlCheckMeta:
3609: * @ctxt: an HTML parser context
3610: * @atts: the attributes values
3611: *
3612: * Checks an attributes from a Meta tag
3613: */
3614: static void
3615: htmlCheckMeta(htmlParserCtxtPtr ctxt, const xmlChar **atts) {
3616: int i;
3617: const xmlChar *att, *value;
3618: int http = 0;
3619: const xmlChar *content = NULL;
3620:
3621: if ((ctxt == NULL) || (atts == NULL))
3622: return;
3623:
3624: i = 0;
3625: att = atts[i++];
3626: while (att != NULL) {
3627: value = atts[i++];
3628: if ((value != NULL) && (!xmlStrcasecmp(att, BAD_CAST"http-equiv"))
3629: && (!xmlStrcasecmp(value, BAD_CAST"Content-Type")))
3630: http = 1;
3631: else if ((value != NULL) && (!xmlStrcasecmp(att, BAD_CAST"charset")))
3632: htmlCheckEncodingDirect(ctxt, value);
3633: else if ((value != NULL) && (!xmlStrcasecmp(att, BAD_CAST"content")))
3634: content = value;
3635: att = atts[i++];
3636: }
3637: if ((http) && (content != NULL))
3638: htmlCheckEncoding(ctxt, content);
3639:
3640: }
3641:
3642: /**
3643: * htmlParseStartTag:
3644: * @ctxt: an HTML parser context
3645: *
3646: * parse a start of tag either for rule element or
3647: * EmptyElement. In both case we don't parse the tag closing chars.
3648: *
3649: * [40] STag ::= '<' Name (S Attribute)* S? '>'
3650: *
3651: * [44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>'
3652: *
3653: * With namespace:
3654: *
3655: * [NS 8] STag ::= '<' QName (S Attribute)* S? '>'
3656: *
3657: * [NS 10] EmptyElement ::= '<' QName (S Attribute)* S? '/>'
3658: *
3659: * Returns 0 in case of success, -1 in case of error and 1 if discarded
3660: */
3661:
3662: static int
3663: htmlParseStartTag(htmlParserCtxtPtr ctxt) {
3664: const xmlChar *name;
3665: const xmlChar *attname;
3666: xmlChar *attvalue;
3667: const xmlChar **atts;
3668: int nbatts = 0;
3669: int maxatts;
3670: int meta = 0;
3671: int i;
3672: int discardtag = 0;
3673:
3674: if (ctxt->instate == XML_PARSER_EOF)
3675: return(-1);
3676: if ((ctxt == NULL) || (ctxt->input == NULL)) {
3677: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
3678: "htmlParseStartTag: context error\n", NULL, NULL);
3679: return -1;
3680: }
3681: if (CUR != '<') return -1;
3682: NEXT;
3683:
3684: atts = ctxt->atts;
3685: maxatts = ctxt->maxatts;
3686:
3687: GROW;
3688: name = htmlParseHTMLName(ctxt);
3689: if (name == NULL) {
3690: htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
3691: "htmlParseStartTag: invalid element name\n",
3692: NULL, NULL);
3693: /* Dump the bogus tag like browsers do */
3694: while ((IS_CHAR_CH(CUR)) && (CUR != '>') &&
3695: (ctxt->instate != XML_PARSER_EOF))
3696: NEXT;
3697: return -1;
3698: }
3699: if (xmlStrEqual(name, BAD_CAST"meta"))
3700: meta = 1;
3701:
3702: /*
3703: * Check for auto-closure of HTML elements.
3704: */
3705: htmlAutoClose(ctxt, name);
3706:
3707: /*
3708: * Check for implied HTML elements.
3709: */
3710: htmlCheckImplied(ctxt, name);
3711:
3712: /*
3713: * Avoid html at any level > 0, head at any level != 1
3714: * or any attempt to recurse body
3715: */
3716: if ((ctxt->nameNr > 0) && (xmlStrEqual(name, BAD_CAST"html"))) {
3717: htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
3718: "htmlParseStartTag: misplaced <html> tag\n",
3719: name, NULL);
3720: discardtag = 1;
3721: ctxt->depth++;
3722: }
3723: if ((ctxt->nameNr != 1) &&
3724: (xmlStrEqual(name, BAD_CAST"head"))) {
3725: htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
3726: "htmlParseStartTag: misplaced <head> tag\n",
3727: name, NULL);
3728: discardtag = 1;
3729: ctxt->depth++;
3730: }
3731: if (xmlStrEqual(name, BAD_CAST"body")) {
3732: int indx;
3733: for (indx = 0;indx < ctxt->nameNr;indx++) {
3734: if (xmlStrEqual(ctxt->nameTab[indx], BAD_CAST"body")) {
3735: htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
3736: "htmlParseStartTag: misplaced <body> tag\n",
3737: name, NULL);
3738: discardtag = 1;
3739: ctxt->depth++;
3740: }
3741: }
3742: }
3743:
3744: /*
3745: * Now parse the attributes, it ends up with the ending
3746: *
3747: * (S Attribute)* S?
3748: */
3749: SKIP_BLANKS;
3750: while ((IS_CHAR_CH(CUR)) &&
3751: (CUR != '>') &&
3752: ((CUR != '/') || (NXT(1) != '>'))) {
3753: long cons = ctxt->nbChars;
3754:
3755: GROW;
3756: attname = htmlParseAttribute(ctxt, &attvalue);
3757: if (attname != NULL) {
3758:
3759: /*
3760: * Well formedness requires at most one declaration of an attribute
3761: */
3762: for (i = 0; i < nbatts;i += 2) {
3763: if (xmlStrEqual(atts[i], attname)) {
3764: htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_REDEFINED,
3765: "Attribute %s redefined\n", attname, NULL);
3766: if (attvalue != NULL)
3767: xmlFree(attvalue);
3768: goto failed;
3769: }
3770: }
3771:
3772: /*
3773: * Add the pair to atts
3774: */
3775: if (atts == NULL) {
3776: maxatts = 22; /* allow for 10 attrs by default */
3777: atts = (const xmlChar **)
3778: xmlMalloc(maxatts * sizeof(xmlChar *));
3779: if (atts == NULL) {
3780: htmlErrMemory(ctxt, NULL);
3781: if (attvalue != NULL)
3782: xmlFree(attvalue);
3783: goto failed;
3784: }
3785: ctxt->atts = atts;
3786: ctxt->maxatts = maxatts;
3787: } else if (nbatts + 4 > maxatts) {
3788: const xmlChar **n;
3789:
3790: maxatts *= 2;
3791: n = (const xmlChar **) xmlRealloc((void *) atts,
3792: maxatts * sizeof(const xmlChar *));
3793: if (n == NULL) {
3794: htmlErrMemory(ctxt, NULL);
3795: if (attvalue != NULL)
3796: xmlFree(attvalue);
3797: goto failed;
3798: }
3799: atts = n;
3800: ctxt->atts = atts;
3801: ctxt->maxatts = maxatts;
3802: }
3803: atts[nbatts++] = attname;
3804: atts[nbatts++] = attvalue;
3805: atts[nbatts] = NULL;
3806: atts[nbatts + 1] = NULL;
3807: }
3808: else {
3809: if (attvalue != NULL)
3810: xmlFree(attvalue);
3811: /* Dump the bogus attribute string up to the next blank or
3812: * the end of the tag. */
3813: while ((IS_CHAR_CH(CUR)) &&
3814: !(IS_BLANK_CH(CUR)) && (CUR != '>') &&
3815: ((CUR != '/') || (NXT(1) != '>')))
3816: NEXT;
3817: }
3818:
3819: failed:
3820: SKIP_BLANKS;
3821: if (cons == ctxt->nbChars) {
3822: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
3823: "htmlParseStartTag: problem parsing attributes\n",
3824: NULL, NULL);
3825: break;
3826: }
3827: }
3828:
3829: /*
3830: * Handle specific association to the META tag
3831: */
3832: if (meta && (nbatts != 0))
3833: htmlCheckMeta(ctxt, atts);
3834:
3835: /*
3836: * SAX: Start of Element !
3837: */
3838: if (!discardtag) {
3839: htmlnamePush(ctxt, name);
3840: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL)) {
3841: if (nbatts != 0)
3842: ctxt->sax->startElement(ctxt->userData, name, atts);
3843: else
3844: ctxt->sax->startElement(ctxt->userData, name, NULL);
3845: }
3846: }
3847:
3848: if (atts != NULL) {
3849: for (i = 1;i < nbatts;i += 2) {
3850: if (atts[i] != NULL)
3851: xmlFree((xmlChar *) atts[i]);
3852: }
3853: }
3854:
3855: return(discardtag);
3856: }
3857:
3858: /**
3859: * htmlParseEndTag:
3860: * @ctxt: an HTML parser context
3861: *
3862: * parse an end of tag
3863: *
3864: * [42] ETag ::= '</' Name S? '>'
3865: *
3866: * With namespace
3867: *
3868: * [NS 9] ETag ::= '</' QName S? '>'
3869: *
3870: * Returns 1 if the current level should be closed.
3871: */
3872:
3873: static int
3874: htmlParseEndTag(htmlParserCtxtPtr ctxt)
3875: {
3876: const xmlChar *name;
3877: const xmlChar *oldname;
3878: int i, ret;
3879:
3880: if ((CUR != '<') || (NXT(1) != '/')) {
3881: htmlParseErr(ctxt, XML_ERR_LTSLASH_REQUIRED,
3882: "htmlParseEndTag: '</' not found\n", NULL, NULL);
3883: return (0);
3884: }
3885: SKIP(2);
3886:
3887: name = htmlParseHTMLName(ctxt);
3888: if (name == NULL)
3889: return (0);
3890: /*
3891: * We should definitely be at the ending "S? '>'" part
3892: */
3893: SKIP_BLANKS;
3894: if ((!IS_CHAR_CH(CUR)) || (CUR != '>')) {
3895: htmlParseErr(ctxt, XML_ERR_GT_REQUIRED,
3896: "End tag : expected '>'\n", NULL, NULL);
3897: if (ctxt->recovery) {
3898: /*
3899: * We're not at the ending > !!
3900: * Error, unless in recover mode where we search forwards
3901: * until we find a >
3902: */
3903: while (CUR != '\0' && CUR != '>') NEXT;
3904: NEXT;
3905: }
3906: } else
3907: NEXT;
3908:
3909: /*
3910: * if we ignored misplaced tags in htmlParseStartTag don't pop them
3911: * out now.
3912: */
3913: if ((ctxt->depth > 0) &&
3914: (xmlStrEqual(name, BAD_CAST "html") ||
3915: xmlStrEqual(name, BAD_CAST "body") ||
3916: xmlStrEqual(name, BAD_CAST "head"))) {
3917: ctxt->depth--;
3918: return (0);
3919: }
3920:
3921: /*
3922: * If the name read is not one of the element in the parsing stack
3923: * then return, it's just an error.
3924: */
3925: for (i = (ctxt->nameNr - 1); i >= 0; i--) {
3926: if (xmlStrEqual(name, ctxt->nameTab[i]))
3927: break;
3928: }
3929: if (i < 0) {
3930: htmlParseErr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
3931: "Unexpected end tag : %s\n", name, NULL);
3932: return (0);
3933: }
3934:
3935:
3936: /*
3937: * Check for auto-closure of HTML elements.
3938: */
3939:
3940: htmlAutoCloseOnClose(ctxt, name);
3941:
3942: /*
3943: * Well formedness constraints, opening and closing must match.
3944: * With the exception that the autoclose may have popped stuff out
3945: * of the stack.
3946: */
3947: if (!xmlStrEqual(name, ctxt->name)) {
3948: if ((ctxt->name != NULL) && (!xmlStrEqual(ctxt->name, name))) {
3949: htmlParseErr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
3950: "Opening and ending tag mismatch: %s and %s\n",
3951: name, ctxt->name);
3952: }
3953: }
3954:
3955: /*
3956: * SAX: End of Tag
3957: */
3958: oldname = ctxt->name;
3959: if ((oldname != NULL) && (xmlStrEqual(oldname, name))) {
3960: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
3961: ctxt->sax->endElement(ctxt->userData, name);
3962: htmlNodeInfoPop(ctxt);
3963: htmlnamePop(ctxt);
3964: ret = 1;
3965: } else {
3966: ret = 0;
3967: }
3968:
3969: return (ret);
3970: }
3971:
3972:
3973: /**
3974: * htmlParseReference:
3975: * @ctxt: an HTML parser context
3976: *
3977: * parse and handle entity references in content,
3978: * this will end-up in a call to character() since this is either a
3979: * CharRef, or a predefined entity.
3980: */
3981: static void
3982: htmlParseReference(htmlParserCtxtPtr ctxt) {
3983: const htmlEntityDesc * ent;
3984: xmlChar out[6];
3985: const xmlChar *name;
3986: if (CUR != '&') return;
3987:
3988: if (NXT(1) == '#') {
3989: unsigned int c;
3990: int bits, i = 0;
3991:
3992: c = htmlParseCharRef(ctxt);
3993: if (c == 0)
3994: return;
3995:
3996: if (c < 0x80) { out[i++]= c; bits= -6; }
3997: else if (c < 0x800) { out[i++]=((c >> 6) & 0x1F) | 0xC0; bits= 0; }
3998: else if (c < 0x10000) { out[i++]=((c >> 12) & 0x0F) | 0xE0; bits= 6; }
3999: else { out[i++]=((c >> 18) & 0x07) | 0xF0; bits= 12; }
4000:
4001: for ( ; bits >= 0; bits-= 6) {
4002: out[i++]= ((c >> bits) & 0x3F) | 0x80;
4003: }
4004: out[i] = 0;
4005:
4006: htmlCheckParagraph(ctxt);
4007: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
4008: ctxt->sax->characters(ctxt->userData, out, i);
4009: } else {
4010: ent = htmlParseEntityRef(ctxt, &name);
4011: if (name == NULL) {
4012: htmlCheckParagraph(ctxt);
4013: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
4014: ctxt->sax->characters(ctxt->userData, BAD_CAST "&", 1);
4015: return;
4016: }
4017: if ((ent == NULL) || !(ent->value > 0)) {
4018: htmlCheckParagraph(ctxt);
4019: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL)) {
4020: ctxt->sax->characters(ctxt->userData, BAD_CAST "&", 1);
4021: ctxt->sax->characters(ctxt->userData, name, xmlStrlen(name));
4022: /* ctxt->sax->characters(ctxt->userData, BAD_CAST ";", 1); */
4023: }
4024: } else {
4025: unsigned int c;
4026: int bits, i = 0;
4027:
4028: c = ent->value;
4029: if (c < 0x80)
4030: { out[i++]= c; bits= -6; }
4031: else if (c < 0x800)
4032: { out[i++]=((c >> 6) & 0x1F) | 0xC0; bits= 0; }
4033: else if (c < 0x10000)
4034: { out[i++]=((c >> 12) & 0x0F) | 0xE0; bits= 6; }
4035: else
4036: { out[i++]=((c >> 18) & 0x07) | 0xF0; bits= 12; }
4037:
4038: for ( ; bits >= 0; bits-= 6) {
4039: out[i++]= ((c >> bits) & 0x3F) | 0x80;
4040: }
4041: out[i] = 0;
4042:
4043: htmlCheckParagraph(ctxt);
4044: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
4045: ctxt->sax->characters(ctxt->userData, out, i);
4046: }
4047: }
4048: }
4049:
4050: /**
4051: * htmlParseContent:
4052: * @ctxt: an HTML parser context
4053: *
4054: * Parse a content: comment, sub-element, reference or text.
4055: * Kept for compatibility with old code
4056: */
4057:
4058: static void
4059: htmlParseContent(htmlParserCtxtPtr ctxt) {
4060: xmlChar *currentNode;
4061: int depth;
4062: const xmlChar *name;
4063:
4064: currentNode = xmlStrdup(ctxt->name);
4065: depth = ctxt->nameNr;
4066: while (1) {
4067: long cons = ctxt->nbChars;
4068:
4069: GROW;
4070:
4071: if (ctxt->instate == XML_PARSER_EOF)
4072: break;
4073:
4074: /*
4075: * Our tag or one of it's parent or children is ending.
4076: */
4077: if ((CUR == '<') && (NXT(1) == '/')) {
4078: if (htmlParseEndTag(ctxt) &&
4079: ((currentNode != NULL) || (ctxt->nameNr == 0))) {
4080: if (currentNode != NULL)
4081: xmlFree(currentNode);
4082: return;
4083: }
4084: continue; /* while */
4085: }
4086:
4087: else if ((CUR == '<') &&
4088: ((IS_ASCII_LETTER(NXT(1))) ||
4089: (NXT(1) == '_') || (NXT(1) == ':'))) {
4090: name = htmlParseHTMLName_nonInvasive(ctxt);
4091: if (name == NULL) {
4092: htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
4093: "htmlParseStartTag: invalid element name\n",
4094: NULL, NULL);
4095: /* Dump the bogus tag like browsers do */
4096: while ((IS_CHAR_CH(CUR)) && (CUR != '>'))
4097: NEXT;
4098:
4099: if (currentNode != NULL)
4100: xmlFree(currentNode);
4101: return;
4102: }
4103:
4104: if (ctxt->name != NULL) {
4105: if (htmlCheckAutoClose(name, ctxt->name) == 1) {
4106: htmlAutoClose(ctxt, name);
4107: continue;
4108: }
4109: }
4110: }
4111:
4112: /*
4113: * Has this node been popped out during parsing of
4114: * the next element
4115: */
4116: if ((ctxt->nameNr > 0) && (depth >= ctxt->nameNr) &&
4117: (!xmlStrEqual(currentNode, ctxt->name)))
4118: {
4119: if (currentNode != NULL) xmlFree(currentNode);
4120: return;
4121: }
4122:
4123: if ((CUR != 0) && ((xmlStrEqual(currentNode, BAD_CAST"script")) ||
4124: (xmlStrEqual(currentNode, BAD_CAST"style")))) {
4125: /*
4126: * Handle SCRIPT/STYLE separately
4127: */
4128: htmlParseScript(ctxt);
4129: } else {
4130: /*
4131: * Sometimes DOCTYPE arrives in the middle of the document
4132: */
4133: if ((CUR == '<') && (NXT(1) == '!') &&
4134: (UPP(2) == 'D') && (UPP(3) == 'O') &&
4135: (UPP(4) == 'C') && (UPP(5) == 'T') &&
4136: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
4137: (UPP(8) == 'E')) {
4138: htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
4139: "Misplaced DOCTYPE declaration\n",
4140: BAD_CAST "DOCTYPE" , NULL);
4141: htmlParseDocTypeDecl(ctxt);
4142: }
4143:
4144: /*
4145: * First case : a comment
4146: */
4147: if ((CUR == '<') && (NXT(1) == '!') &&
4148: (NXT(2) == '-') && (NXT(3) == '-')) {
4149: htmlParseComment(ctxt);
4150: }
4151:
4152: /*
4153: * Second case : a Processing Instruction.
4154: */
4155: else if ((CUR == '<') && (NXT(1) == '?')) {
4156: htmlParsePI(ctxt);
4157: }
4158:
4159: /*
4160: * Third case : a sub-element.
4161: */
4162: else if (CUR == '<') {
4163: htmlParseElement(ctxt);
4164: }
4165:
4166: /*
4167: * Fourth case : a reference. If if has not been resolved,
4168: * parsing returns it's Name, create the node
4169: */
4170: else if (CUR == '&') {
4171: htmlParseReference(ctxt);
4172: }
4173:
4174: /*
4175: * Fifth case : end of the resource
4176: */
4177: else if (CUR == 0) {
4178: htmlAutoCloseOnEnd(ctxt);
4179: break;
4180: }
4181:
4182: /*
4183: * Last case, text. Note that References are handled directly.
4184: */
4185: else {
4186: htmlParseCharData(ctxt);
4187: }
4188:
4189: if (cons == ctxt->nbChars) {
4190: if (ctxt->node != NULL) {
4191: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
4192: "detected an error in element content\n",
4193: NULL, NULL);
4194: }
4195: break;
4196: }
4197: }
4198: GROW;
4199: }
4200: if (currentNode != NULL) xmlFree(currentNode);
4201: }
4202:
4203: /**
4204: * htmlParseElement:
4205: * @ctxt: an HTML parser context
4206: *
4207: * parse an HTML element, this is highly recursive
4208: * this is kept for compatibility with previous code versions
4209: *
4210: * [39] element ::= EmptyElemTag | STag content ETag
4211: *
4212: * [41] Attribute ::= Name Eq AttValue
4213: */
4214:
4215: void
4216: htmlParseElement(htmlParserCtxtPtr ctxt) {
4217: const xmlChar *name;
4218: xmlChar *currentNode = NULL;
4219: const htmlElemDesc * info;
4220: htmlParserNodeInfo node_info;
4221: int failed;
4222: int depth;
4223: const xmlChar *oldptr;
4224:
4225: if ((ctxt == NULL) || (ctxt->input == NULL)) {
4226: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
4227: "htmlParseElement: context error\n", NULL, NULL);
4228: return;
4229: }
4230:
4231: if (ctxt->instate == XML_PARSER_EOF)
4232: return;
4233:
4234: /* Capture start position */
4235: if (ctxt->record_info) {
4236: node_info.begin_pos = ctxt->input->consumed +
4237: (CUR_PTR - ctxt->input->base);
4238: node_info.begin_line = ctxt->input->line;
4239: }
4240:
4241: failed = htmlParseStartTag(ctxt);
4242: name = ctxt->name;
4243: if ((failed == -1) || (name == NULL)) {
4244: if (CUR == '>')
4245: NEXT;
4246: return;
4247: }
4248:
4249: /*
4250: * Lookup the info for that element.
4251: */
4252: info = htmlTagLookup(name);
4253: if (info == NULL) {
4254: htmlParseErr(ctxt, XML_HTML_UNKNOWN_TAG,
4255: "Tag %s invalid\n", name, NULL);
4256: }
4257:
4258: /*
4259: * Check for an Empty Element labeled the XML/SGML way
4260: */
4261: if ((CUR == '/') && (NXT(1) == '>')) {
4262: SKIP(2);
4263: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
4264: ctxt->sax->endElement(ctxt->userData, name);
4265: htmlnamePop(ctxt);
4266: return;
4267: }
4268:
4269: if (CUR == '>') {
4270: NEXT;
4271: } else {
4272: htmlParseErr(ctxt, XML_ERR_GT_REQUIRED,
4273: "Couldn't find end of Start Tag %s\n", name, NULL);
4274:
4275: /*
4276: * end of parsing of this node.
4277: */
4278: if (xmlStrEqual(name, ctxt->name)) {
4279: nodePop(ctxt);
4280: htmlnamePop(ctxt);
4281: }
4282:
4283: /*
4284: * Capture end position and add node
4285: */
4286: if (ctxt->record_info) {
4287: node_info.end_pos = ctxt->input->consumed +
4288: (CUR_PTR - ctxt->input->base);
4289: node_info.end_line = ctxt->input->line;
4290: node_info.node = ctxt->node;
4291: xmlParserAddNodeInfo(ctxt, &node_info);
4292: }
4293: return;
4294: }
4295:
4296: /*
4297: * Check for an Empty Element from DTD definition
4298: */
4299: if ((info != NULL) && (info->empty)) {
4300: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
4301: ctxt->sax->endElement(ctxt->userData, name);
4302: htmlnamePop(ctxt);
4303: return;
4304: }
4305:
4306: /*
4307: * Parse the content of the element:
4308: */
4309: currentNode = xmlStrdup(ctxt->name);
4310: depth = ctxt->nameNr;
4311: while (IS_CHAR_CH(CUR)) {
4312: oldptr = ctxt->input->cur;
4313: htmlParseContent(ctxt);
4314: if (oldptr==ctxt->input->cur) break;
4315: if (ctxt->nameNr < depth) break;
4316: }
4317:
4318: /*
4319: * Capture end position and add node
4320: */
4321: if ( currentNode != NULL && ctxt->record_info ) {
4322: node_info.end_pos = ctxt->input->consumed +
4323: (CUR_PTR - ctxt->input->base);
4324: node_info.end_line = ctxt->input->line;
4325: node_info.node = ctxt->node;
4326: xmlParserAddNodeInfo(ctxt, &node_info);
4327: }
4328: if (!IS_CHAR_CH(CUR)) {
4329: htmlAutoCloseOnEnd(ctxt);
4330: }
4331:
4332: if (currentNode != NULL)
4333: xmlFree(currentNode);
4334: }
4335:
4336: static void
4337: htmlParserFinishElementParsing(htmlParserCtxtPtr ctxt) {
4338: /*
4339: * Capture end position and add node
4340: */
4341: if ( ctxt->node != NULL && ctxt->record_info ) {
4342: ctxt->nodeInfo->end_pos = ctxt->input->consumed +
4343: (CUR_PTR - ctxt->input->base);
4344: ctxt->nodeInfo->end_line = ctxt->input->line;
4345: ctxt->nodeInfo->node = ctxt->node;
4346: xmlParserAddNodeInfo(ctxt, ctxt->nodeInfo);
4347: htmlNodeInfoPop(ctxt);
4348: }
4349: if (!IS_CHAR_CH(CUR)) {
4350: htmlAutoCloseOnEnd(ctxt);
4351: }
4352: }
4353:
4354: /**
4355: * htmlParseElementInternal:
4356: * @ctxt: an HTML parser context
4357: *
4358: * parse an HTML element, new version, non recursive
4359: *
4360: * [39] element ::= EmptyElemTag | STag content ETag
4361: *
4362: * [41] Attribute ::= Name Eq AttValue
4363: */
4364:
4365: static void
4366: htmlParseElementInternal(htmlParserCtxtPtr ctxt) {
4367: const xmlChar *name;
4368: const htmlElemDesc * info;
4369: htmlParserNodeInfo node_info;
4370: int failed;
4371:
4372: if ((ctxt == NULL) || (ctxt->input == NULL)) {
4373: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
4374: "htmlParseElementInternal: context error\n", NULL, NULL);
4375: return;
4376: }
4377:
4378: if (ctxt->instate == XML_PARSER_EOF)
4379: return;
4380:
4381: /* Capture start position */
4382: if (ctxt->record_info) {
4383: node_info.begin_pos = ctxt->input->consumed +
4384: (CUR_PTR - ctxt->input->base);
4385: node_info.begin_line = ctxt->input->line;
4386: }
4387:
4388: failed = htmlParseStartTag(ctxt);
4389: name = ctxt->name;
4390: if ((failed == -1) || (name == NULL)) {
4391: if (CUR == '>')
4392: NEXT;
4393: return;
4394: }
4395:
4396: /*
4397: * Lookup the info for that element.
4398: */
4399: info = htmlTagLookup(name);
4400: if (info == NULL) {
4401: htmlParseErr(ctxt, XML_HTML_UNKNOWN_TAG,
4402: "Tag %s invalid\n", name, NULL);
4403: }
4404:
4405: /*
4406: * Check for an Empty Element labeled the XML/SGML way
4407: */
4408: if ((CUR == '/') && (NXT(1) == '>')) {
4409: SKIP(2);
4410: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
4411: ctxt->sax->endElement(ctxt->userData, name);
4412: htmlnamePop(ctxt);
4413: return;
4414: }
4415:
4416: if (CUR == '>') {
4417: NEXT;
4418: } else {
4419: htmlParseErr(ctxt, XML_ERR_GT_REQUIRED,
4420: "Couldn't find end of Start Tag %s\n", name, NULL);
4421:
4422: /*
4423: * end of parsing of this node.
4424: */
4425: if (xmlStrEqual(name, ctxt->name)) {
4426: nodePop(ctxt);
4427: htmlnamePop(ctxt);
4428: }
4429:
4430: if (ctxt->record_info)
4431: htmlNodeInfoPush(ctxt, &node_info);
4432: htmlParserFinishElementParsing(ctxt);
4433: return;
4434: }
4435:
4436: /*
4437: * Check for an Empty Element from DTD definition
4438: */
4439: if ((info != NULL) && (info->empty)) {
4440: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
4441: ctxt->sax->endElement(ctxt->userData, name);
4442: htmlnamePop(ctxt);
4443: return;
4444: }
4445:
4446: if (ctxt->record_info)
4447: htmlNodeInfoPush(ctxt, &node_info);
4448: }
4449:
4450: /**
4451: * htmlParseContentInternal:
4452: * @ctxt: an HTML parser context
4453: *
4454: * Parse a content: comment, sub-element, reference or text.
4455: * New version for non recursive htmlParseElementInternal
4456: */
4457:
4458: static void
4459: htmlParseContentInternal(htmlParserCtxtPtr ctxt) {
4460: xmlChar *currentNode;
4461: int depth;
4462: const xmlChar *name;
4463:
4464: currentNode = xmlStrdup(ctxt->name);
4465: depth = ctxt->nameNr;
4466: while (1) {
4467: long cons = ctxt->nbChars;
4468:
4469: GROW;
4470:
4471: if (ctxt->instate == XML_PARSER_EOF)
4472: break;
4473:
4474: /*
4475: * Our tag or one of it's parent or children is ending.
4476: */
4477: if ((CUR == '<') && (NXT(1) == '/')) {
4478: if (htmlParseEndTag(ctxt) &&
4479: ((currentNode != NULL) || (ctxt->nameNr == 0))) {
4480: if (currentNode != NULL)
4481: xmlFree(currentNode);
4482:
4483: currentNode = xmlStrdup(ctxt->name);
4484: depth = ctxt->nameNr;
4485: }
4486: continue; /* while */
4487: }
4488:
4489: else if ((CUR == '<') &&
4490: ((IS_ASCII_LETTER(NXT(1))) ||
4491: (NXT(1) == '_') || (NXT(1) == ':'))) {
4492: name = htmlParseHTMLName_nonInvasive(ctxt);
4493: if (name == NULL) {
4494: htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
4495: "htmlParseStartTag: invalid element name\n",
4496: NULL, NULL);
4497: /* Dump the bogus tag like browsers do */
4498: while ((IS_CHAR_CH(CUR)) && (CUR != '>'))
4499: NEXT;
4500:
4501: htmlParserFinishElementParsing(ctxt);
4502: if (currentNode != NULL)
4503: xmlFree(currentNode);
4504:
4505: currentNode = xmlStrdup(ctxt->name);
4506: depth = ctxt->nameNr;
4507: continue;
4508: }
4509:
4510: if (ctxt->name != NULL) {
4511: if (htmlCheckAutoClose(name, ctxt->name) == 1) {
4512: htmlAutoClose(ctxt, name);
4513: continue;
4514: }
4515: }
4516: }
4517:
4518: /*
4519: * Has this node been popped out during parsing of
4520: * the next element
4521: */
4522: if ((ctxt->nameNr > 0) && (depth >= ctxt->nameNr) &&
4523: (!xmlStrEqual(currentNode, ctxt->name)))
4524: {
4525: htmlParserFinishElementParsing(ctxt);
4526: if (currentNode != NULL) xmlFree(currentNode);
4527:
4528: currentNode = xmlStrdup(ctxt->name);
4529: depth = ctxt->nameNr;
4530: continue;
4531: }
4532:
4533: if ((CUR != 0) && ((xmlStrEqual(currentNode, BAD_CAST"script")) ||
4534: (xmlStrEqual(currentNode, BAD_CAST"style")))) {
4535: /*
4536: * Handle SCRIPT/STYLE separately
4537: */
4538: htmlParseScript(ctxt);
4539: } else {
4540: /*
4541: * Sometimes DOCTYPE arrives in the middle of the document
4542: */
4543: if ((CUR == '<') && (NXT(1) == '!') &&
4544: (UPP(2) == 'D') && (UPP(3) == 'O') &&
4545: (UPP(4) == 'C') && (UPP(5) == 'T') &&
4546: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
4547: (UPP(8) == 'E')) {
4548: htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
4549: "Misplaced DOCTYPE declaration\n",
4550: BAD_CAST "DOCTYPE" , NULL);
4551: htmlParseDocTypeDecl(ctxt);
4552: }
4553:
4554: /*
4555: * First case : a comment
4556: */
4557: if ((CUR == '<') && (NXT(1) == '!') &&
4558: (NXT(2) == '-') && (NXT(3) == '-')) {
4559: htmlParseComment(ctxt);
4560: }
4561:
4562: /*
4563: * Second case : a Processing Instruction.
4564: */
4565: else if ((CUR == '<') && (NXT(1) == '?')) {
4566: htmlParsePI(ctxt);
4567: }
4568:
4569: /*
4570: * Third case : a sub-element.
4571: */
4572: else if (CUR == '<') {
4573: htmlParseElementInternal(ctxt);
4574: if (currentNode != NULL) xmlFree(currentNode);
4575:
4576: currentNode = xmlStrdup(ctxt->name);
4577: depth = ctxt->nameNr;
4578: }
4579:
4580: /*
4581: * Fourth case : a reference. If if has not been resolved,
4582: * parsing returns it's Name, create the node
4583: */
4584: else if (CUR == '&') {
4585: htmlParseReference(ctxt);
4586: }
4587:
4588: /*
4589: * Fifth case : end of the resource
4590: */
4591: else if (CUR == 0) {
4592: htmlAutoCloseOnEnd(ctxt);
4593: break;
4594: }
4595:
4596: /*
4597: * Last case, text. Note that References are handled directly.
4598: */
4599: else {
4600: htmlParseCharData(ctxt);
4601: }
4602:
4603: if (cons == ctxt->nbChars) {
4604: if (ctxt->node != NULL) {
4605: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
4606: "detected an error in element content\n",
4607: NULL, NULL);
4608: }
4609: break;
4610: }
4611: }
4612: GROW;
4613: }
4614: if (currentNode != NULL) xmlFree(currentNode);
4615: }
4616:
4617: /**
4618: * htmlParseContent:
4619: * @ctxt: an HTML parser context
4620: *
4621: * Parse a content: comment, sub-element, reference or text.
4622: * This is the entry point when called from parser.c
4623: */
4624:
4625: void
4626: __htmlParseContent(void *ctxt) {
4627: if (ctxt != NULL)
4628: htmlParseContentInternal((htmlParserCtxtPtr) ctxt);
4629: }
4630:
4631: /**
4632: * htmlParseDocument:
4633: * @ctxt: an HTML parser context
4634: *
4635: * parse an HTML document (and build a tree if using the standard SAX
4636: * interface).
4637: *
4638: * Returns 0, -1 in case of error. the parser context is augmented
4639: * as a result of the parsing.
4640: */
4641:
4642: int
4643: htmlParseDocument(htmlParserCtxtPtr ctxt) {
4644: xmlChar start[4];
4645: xmlCharEncoding enc;
4646: xmlDtdPtr dtd;
4647:
4648: xmlInitParser();
4649:
4650: htmlDefaultSAXHandlerInit();
4651:
4652: if ((ctxt == NULL) || (ctxt->input == NULL)) {
4653: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
4654: "htmlParseDocument: context error\n", NULL, NULL);
4655: return(XML_ERR_INTERNAL_ERROR);
4656: }
4657: ctxt->html = 1;
4658: ctxt->linenumbers = 1;
4659: GROW;
4660: /*
4661: * SAX: beginning of the document processing.
4662: */
4663: if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
4664: ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator);
4665:
4666: if ((ctxt->encoding == (const xmlChar *)XML_CHAR_ENCODING_NONE) &&
4667: ((ctxt->input->end - ctxt->input->cur) >= 4)) {
4668: /*
4669: * Get the 4 first bytes and decode the charset
4670: * if enc != XML_CHAR_ENCODING_NONE
4671: * plug some encoding conversion routines.
4672: */
4673: start[0] = RAW;
4674: start[1] = NXT(1);
4675: start[2] = NXT(2);
4676: start[3] = NXT(3);
4677: enc = xmlDetectCharEncoding(&start[0], 4);
4678: if (enc != XML_CHAR_ENCODING_NONE) {
4679: xmlSwitchEncoding(ctxt, enc);
4680: }
4681: }
4682:
4683: /*
4684: * Wipe out everything which is before the first '<'
4685: */
4686: SKIP_BLANKS;
4687: if (CUR == 0) {
4688: htmlParseErr(ctxt, XML_ERR_DOCUMENT_EMPTY,
4689: "Document is empty\n", NULL, NULL);
4690: }
4691:
4692: if ((ctxt->sax) && (ctxt->sax->startDocument) && (!ctxt->disableSAX))
4693: ctxt->sax->startDocument(ctxt->userData);
4694:
4695:
4696: /*
4697: * Parse possible comments and PIs before any content
4698: */
4699: while (((CUR == '<') && (NXT(1) == '!') &&
4700: (NXT(2) == '-') && (NXT(3) == '-')) ||
4701: ((CUR == '<') && (NXT(1) == '?'))) {
4702: htmlParseComment(ctxt);
4703: htmlParsePI(ctxt);
4704: SKIP_BLANKS;
4705: }
4706:
4707:
4708: /*
4709: * Then possibly doc type declaration(s) and more Misc
4710: * (doctypedecl Misc*)?
4711: */
4712: if ((CUR == '<') && (NXT(1) == '!') &&
4713: (UPP(2) == 'D') && (UPP(3) == 'O') &&
4714: (UPP(4) == 'C') && (UPP(5) == 'T') &&
4715: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
4716: (UPP(8) == 'E')) {
4717: htmlParseDocTypeDecl(ctxt);
4718: }
4719: SKIP_BLANKS;
4720:
4721: /*
4722: * Parse possible comments and PIs before any content
4723: */
4724: while (((CUR == '<') && (NXT(1) == '!') &&
4725: (NXT(2) == '-') && (NXT(3) == '-')) ||
4726: ((CUR == '<') && (NXT(1) == '?'))) {
4727: htmlParseComment(ctxt);
4728: htmlParsePI(ctxt);
4729: SKIP_BLANKS;
4730: }
4731:
4732: /*
4733: * Time to start parsing the tree itself
4734: */
4735: htmlParseContentInternal(ctxt);
4736:
4737: /*
4738: * autoclose
4739: */
4740: if (CUR == 0)
4741: htmlAutoCloseOnEnd(ctxt);
4742:
4743:
4744: /*
4745: * SAX: end of the document processing.
4746: */
4747: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
4748: ctxt->sax->endDocument(ctxt->userData);
4749:
4750: if ((!(ctxt->options & HTML_PARSE_NODEFDTD)) && (ctxt->myDoc != NULL)) {
4751: dtd = xmlGetIntSubset(ctxt->myDoc);
4752: if (dtd == NULL)
4753: ctxt->myDoc->intSubset =
4754: xmlCreateIntSubset(ctxt->myDoc, BAD_CAST "html",
4755: BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN",
4756: BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd");
4757: }
4758: if (! ctxt->wellFormed) return(-1);
4759: return(0);
4760: }
4761:
4762:
4763: /************************************************************************
4764: * *
4765: * Parser contexts handling *
4766: * *
4767: ************************************************************************/
4768:
4769: /**
4770: * htmlInitParserCtxt:
4771: * @ctxt: an HTML parser context
4772: *
4773: * Initialize a parser context
4774: *
4775: * Returns 0 in case of success and -1 in case of error
4776: */
4777:
4778: static int
4779: htmlInitParserCtxt(htmlParserCtxtPtr ctxt)
4780: {
4781: htmlSAXHandler *sax;
4782:
4783: if (ctxt == NULL) return(-1);
4784: memset(ctxt, 0, sizeof(htmlParserCtxt));
4785:
4786: ctxt->dict = xmlDictCreate();
4787: if (ctxt->dict == NULL) {
4788: htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
4789: return(-1);
4790: }
4791: sax = (htmlSAXHandler *) xmlMalloc(sizeof(htmlSAXHandler));
4792: if (sax == NULL) {
4793: htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
4794: return(-1);
4795: }
4796: else
4797: memset(sax, 0, sizeof(htmlSAXHandler));
4798:
4799: /* Allocate the Input stack */
4800: ctxt->inputTab = (htmlParserInputPtr *)
4801: xmlMalloc(5 * sizeof(htmlParserInputPtr));
4802: if (ctxt->inputTab == NULL) {
4803: htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
4804: ctxt->inputNr = 0;
4805: ctxt->inputMax = 0;
4806: ctxt->input = NULL;
4807: return(-1);
4808: }
4809: ctxt->inputNr = 0;
4810: ctxt->inputMax = 5;
4811: ctxt->input = NULL;
4812: ctxt->version = NULL;
4813: ctxt->encoding = NULL;
4814: ctxt->standalone = -1;
4815: ctxt->instate = XML_PARSER_START;
4816:
4817: /* Allocate the Node stack */
4818: ctxt->nodeTab = (htmlNodePtr *) xmlMalloc(10 * sizeof(htmlNodePtr));
4819: if (ctxt->nodeTab == NULL) {
4820: htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
4821: ctxt->nodeNr = 0;
4822: ctxt->nodeMax = 0;
4823: ctxt->node = NULL;
4824: ctxt->inputNr = 0;
4825: ctxt->inputMax = 0;
4826: ctxt->input = NULL;
4827: return(-1);
4828: }
4829: ctxt->nodeNr = 0;
4830: ctxt->nodeMax = 10;
4831: ctxt->node = NULL;
4832:
4833: /* Allocate the Name stack */
4834: ctxt->nameTab = (const xmlChar **) xmlMalloc(10 * sizeof(xmlChar *));
4835: if (ctxt->nameTab == NULL) {
4836: htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
4837: ctxt->nameNr = 0;
4838: ctxt->nameMax = 0;
4839: ctxt->name = NULL;
4840: ctxt->nodeNr = 0;
4841: ctxt->nodeMax = 0;
4842: ctxt->node = NULL;
4843: ctxt->inputNr = 0;
4844: ctxt->inputMax = 0;
4845: ctxt->input = NULL;
4846: return(-1);
4847: }
4848: ctxt->nameNr = 0;
4849: ctxt->nameMax = 10;
4850: ctxt->name = NULL;
4851:
4852: ctxt->nodeInfoTab = NULL;
4853: ctxt->nodeInfoNr = 0;
4854: ctxt->nodeInfoMax = 0;
4855:
4856: if (sax == NULL) ctxt->sax = (xmlSAXHandlerPtr) &htmlDefaultSAXHandler;
4857: else {
4858: ctxt->sax = sax;
4859: memcpy(sax, &htmlDefaultSAXHandler, sizeof(xmlSAXHandlerV1));
4860: }
4861: ctxt->userData = ctxt;
4862: ctxt->myDoc = NULL;
4863: ctxt->wellFormed = 1;
4864: ctxt->replaceEntities = 0;
4865: ctxt->linenumbers = xmlLineNumbersDefaultValue;
4866: ctxt->html = 1;
4867: ctxt->vctxt.finishDtd = XML_CTXT_FINISH_DTD_0;
4868: ctxt->vctxt.userData = ctxt;
4869: ctxt->vctxt.error = xmlParserValidityError;
4870: ctxt->vctxt.warning = xmlParserValidityWarning;
4871: ctxt->record_info = 0;
4872: ctxt->validate = 0;
4873: ctxt->nbChars = 0;
4874: ctxt->checkIndex = 0;
4875: ctxt->catalogs = NULL;
4876: xmlInitNodeInfoSeq(&ctxt->node_seq);
4877: return(0);
4878: }
4879:
4880: /**
4881: * htmlFreeParserCtxt:
4882: * @ctxt: an HTML parser context
4883: *
4884: * Free all the memory used by a parser context. However the parsed
4885: * document in ctxt->myDoc is not freed.
4886: */
4887:
4888: void
4889: htmlFreeParserCtxt(htmlParserCtxtPtr ctxt)
4890: {
4891: xmlFreeParserCtxt(ctxt);
4892: }
4893:
4894: /**
4895: * htmlNewParserCtxt:
4896: *
4897: * Allocate and initialize a new parser context.
4898: *
4899: * Returns the htmlParserCtxtPtr or NULL in case of allocation error
4900: */
4901:
4902: htmlParserCtxtPtr
4903: htmlNewParserCtxt(void)
4904: {
4905: xmlParserCtxtPtr ctxt;
4906:
4907: ctxt = (xmlParserCtxtPtr) xmlMalloc(sizeof(xmlParserCtxt));
4908: if (ctxt == NULL) {
4909: htmlErrMemory(NULL, "NewParserCtxt: out of memory\n");
4910: return(NULL);
4911: }
4912: memset(ctxt, 0, sizeof(xmlParserCtxt));
4913: if (htmlInitParserCtxt(ctxt) < 0) {
4914: htmlFreeParserCtxt(ctxt);
4915: return(NULL);
4916: }
4917: return(ctxt);
4918: }
4919:
4920: /**
4921: * htmlCreateMemoryParserCtxt:
4922: * @buffer: a pointer to a char array
4923: * @size: the size of the array
4924: *
4925: * Create a parser context for an HTML in-memory document.
4926: *
4927: * Returns the new parser context or NULL
4928: */
4929: htmlParserCtxtPtr
4930: htmlCreateMemoryParserCtxt(const char *buffer, int size) {
4931: xmlParserCtxtPtr ctxt;
4932: xmlParserInputPtr input;
4933: xmlParserInputBufferPtr buf;
4934:
4935: if (buffer == NULL)
4936: return(NULL);
4937: if (size <= 0)
4938: return(NULL);
4939:
4940: ctxt = htmlNewParserCtxt();
4941: if (ctxt == NULL)
4942: return(NULL);
4943:
4944: buf = xmlParserInputBufferCreateMem(buffer, size, XML_CHAR_ENCODING_NONE);
4945: if (buf == NULL) return(NULL);
4946:
4947: input = xmlNewInputStream(ctxt);
4948: if (input == NULL) {
4949: xmlFreeParserCtxt(ctxt);
4950: return(NULL);
4951: }
4952:
4953: input->filename = NULL;
4954: input->buf = buf;
4955: xmlBufResetInput(buf->buffer, input);
4956:
4957: inputPush(ctxt, input);
4958: return(ctxt);
4959: }
4960:
4961: /**
4962: * htmlCreateDocParserCtxt:
4963: * @cur: a pointer to an array of xmlChar
4964: * @encoding: a free form C string describing the HTML document encoding, or NULL
4965: *
4966: * Create a parser context for an HTML document.
4967: *
4968: * TODO: check the need to add encoding handling there
4969: *
4970: * Returns the new parser context or NULL
4971: */
4972: static htmlParserCtxtPtr
4973: htmlCreateDocParserCtxt(const xmlChar *cur, const char *encoding) {
4974: int len;
4975: htmlParserCtxtPtr ctxt;
4976:
4977: if (cur == NULL)
4978: return(NULL);
4979: len = xmlStrlen(cur);
4980: ctxt = htmlCreateMemoryParserCtxt((char *)cur, len);
4981: if (ctxt == NULL)
4982: return(NULL);
4983:
4984: if (encoding != NULL) {
4985: xmlCharEncoding enc;
4986: xmlCharEncodingHandlerPtr handler;
4987:
4988: if (ctxt->input->encoding != NULL)
4989: xmlFree((xmlChar *) ctxt->input->encoding);
4990: ctxt->input->encoding = xmlStrdup((const xmlChar *) encoding);
4991:
4992: enc = xmlParseCharEncoding(encoding);
4993: /*
4994: * registered set of known encodings
4995: */
4996: if (enc != XML_CHAR_ENCODING_ERROR) {
4997: xmlSwitchEncoding(ctxt, enc);
4998: if (ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) {
4999: htmlParseErr(ctxt, XML_ERR_UNSUPPORTED_ENCODING,
5000: "Unsupported encoding %s\n",
5001: (const xmlChar *) encoding, NULL);
5002: }
5003: } else {
5004: /*
5005: * fallback for unknown encodings
5006: */
5007: handler = xmlFindCharEncodingHandler((const char *) encoding);
5008: if (handler != NULL) {
5009: xmlSwitchToEncoding(ctxt, handler);
5010: } else {
5011: htmlParseErr(ctxt, XML_ERR_UNSUPPORTED_ENCODING,
5012: "Unsupported encoding %s\n",
5013: (const xmlChar *) encoding, NULL);
5014: }
5015: }
5016: }
5017: return(ctxt);
5018: }
5019:
5020: #ifdef LIBXML_PUSH_ENABLED
5021: /************************************************************************
5022: * *
5023: * Progressive parsing interfaces *
5024: * *
5025: ************************************************************************/
5026:
5027: /**
5028: * htmlParseLookupSequence:
5029: * @ctxt: an HTML parser context
5030: * @first: the first char to lookup
5031: * @next: the next char to lookup or zero
5032: * @third: the next char to lookup or zero
5033: * @comment: flag to force checking inside comments
5034: *
5035: * Try to find if a sequence (first, next, third) or just (first next) or
5036: * (first) is available in the input stream.
5037: * This function has a side effect of (possibly) incrementing ctxt->checkIndex
5038: * to avoid rescanning sequences of bytes, it DOES change the state of the
5039: * parser, do not use liberally.
5040: * This is basically similar to xmlParseLookupSequence()
5041: *
5042: * Returns the index to the current parsing point if the full sequence
5043: * is available, -1 otherwise.
5044: */
5045: static int
5046: htmlParseLookupSequence(htmlParserCtxtPtr ctxt, xmlChar first,
5047: xmlChar next, xmlChar third, int iscomment,
5048: int ignoreattrval)
5049: {
5050: int base, len;
5051: htmlParserInputPtr in;
5052: const xmlChar *buf;
5053: int incomment = 0;
5054: int invalue = 0;
5055: char valdellim = 0x0;
5056:
5057: in = ctxt->input;
5058: if (in == NULL)
5059: return (-1);
5060:
5061: base = in->cur - in->base;
5062: if (base < 0)
5063: return (-1);
5064:
5065: if (ctxt->checkIndex > base)
5066: base = ctxt->checkIndex;
5067:
5068: if (in->buf == NULL) {
5069: buf = in->base;
5070: len = in->length;
5071: } else {
5072: buf = xmlBufContent(in->buf->buffer);
5073: len = xmlBufUse(in->buf->buffer);
5074: }
5075:
5076: /* take into account the sequence length */
5077: if (third)
5078: len -= 2;
5079: else if (next)
5080: len--;
5081: for (; base < len; base++) {
5082: if ((!incomment) && (base + 4 < len) && (!iscomment)) {
5083: if ((buf[base] == '<') && (buf[base + 1] == '!') &&
5084: (buf[base + 2] == '-') && (buf[base + 3] == '-')) {
5085: incomment = 1;
5086: /* do not increment past <! - some people use <!--> */
5087: base += 2;
5088: }
5089: }
5090: if (ignoreattrval) {
5091: if (buf[base] == '"' || buf[base] == '\'') {
5092: if (invalue) {
5093: if (buf[base] == valdellim) {
5094: invalue = 0;
5095: continue;
5096: }
5097: } else {
5098: valdellim = buf[base];
5099: invalue = 1;
5100: continue;
5101: }
5102: } else if (invalue) {
5103: continue;
5104: }
5105: }
5106: if (incomment) {
5107: if (base + 3 > len)
5108: return (-1);
5109: if ((buf[base] == '-') && (buf[base + 1] == '-') &&
5110: (buf[base + 2] == '>')) {
5111: incomment = 0;
5112: base += 2;
5113: }
5114: continue;
5115: }
5116: if (buf[base] == first) {
5117: if (third != 0) {
5118: if ((buf[base + 1] != next) || (buf[base + 2] != third))
5119: continue;
5120: } else if (next != 0) {
5121: if (buf[base + 1] != next)
5122: continue;
5123: }
5124: ctxt->checkIndex = 0;
5125: #ifdef DEBUG_PUSH
5126: if (next == 0)
5127: xmlGenericError(xmlGenericErrorContext,
5128: "HPP: lookup '%c' found at %d\n",
5129: first, base);
5130: else if (third == 0)
5131: xmlGenericError(xmlGenericErrorContext,
5132: "HPP: lookup '%c%c' found at %d\n",
5133: first, next, base);
5134: else
5135: xmlGenericError(xmlGenericErrorContext,
5136: "HPP: lookup '%c%c%c' found at %d\n",
5137: first, next, third, base);
5138: #endif
5139: return (base - (in->cur - in->base));
5140: }
5141: }
5142: if ((!incomment) && (!invalue))
5143: ctxt->checkIndex = base;
5144: #ifdef DEBUG_PUSH
5145: if (next == 0)
5146: xmlGenericError(xmlGenericErrorContext,
5147: "HPP: lookup '%c' failed\n", first);
5148: else if (third == 0)
5149: xmlGenericError(xmlGenericErrorContext,
5150: "HPP: lookup '%c%c' failed\n", first, next);
5151: else
5152: xmlGenericError(xmlGenericErrorContext,
5153: "HPP: lookup '%c%c%c' failed\n", first, next,
5154: third);
5155: #endif
5156: return (-1);
5157: }
5158:
5159: /**
5160: * htmlParseLookupChars:
5161: * @ctxt: an HTML parser context
5162: * @stop: Array of chars, which stop the lookup.
5163: * @stopLen: Length of stop-Array
5164: *
5165: * Try to find if any char of the stop-Array is available in the input
5166: * stream.
5167: * This function has a side effect of (possibly) incrementing ctxt->checkIndex
5168: * to avoid rescanning sequences of bytes, it DOES change the state of the
5169: * parser, do not use liberally.
5170: *
5171: * Returns the index to the current parsing point if a stopChar
5172: * is available, -1 otherwise.
5173: */
5174: static int
5175: htmlParseLookupChars(htmlParserCtxtPtr ctxt, const xmlChar * stop,
5176: int stopLen)
5177: {
5178: int base, len;
5179: htmlParserInputPtr in;
5180: const xmlChar *buf;
5181: int incomment = 0;
5182: int i;
5183:
5184: in = ctxt->input;
5185: if (in == NULL)
5186: return (-1);
5187:
5188: base = in->cur - in->base;
5189: if (base < 0)
5190: return (-1);
5191:
5192: if (ctxt->checkIndex > base)
5193: base = ctxt->checkIndex;
5194:
5195: if (in->buf == NULL) {
5196: buf = in->base;
5197: len = in->length;
5198: } else {
5199: buf = xmlBufContent(in->buf->buffer);
5200: len = xmlBufUse(in->buf->buffer);
5201: }
5202:
5203: for (; base < len; base++) {
5204: if (!incomment && (base + 4 < len)) {
5205: if ((buf[base] == '<') && (buf[base + 1] == '!') &&
5206: (buf[base + 2] == '-') && (buf[base + 3] == '-')) {
5207: incomment = 1;
5208: /* do not increment past <! - some people use <!--> */
5209: base += 2;
5210: }
5211: }
5212: if (incomment) {
5213: if (base + 3 > len)
5214: return (-1);
5215: if ((buf[base] == '-') && (buf[base + 1] == '-') &&
5216: (buf[base + 2] == '>')) {
5217: incomment = 0;
5218: base += 2;
5219: }
5220: continue;
5221: }
5222: for (i = 0; i < stopLen; ++i) {
5223: if (buf[base] == stop[i]) {
5224: ctxt->checkIndex = 0;
5225: return (base - (in->cur - in->base));
5226: }
5227: }
5228: }
5229: ctxt->checkIndex = base;
5230: return (-1);
5231: }
5232:
5233: /**
5234: * htmlParseTryOrFinish:
5235: * @ctxt: an HTML parser context
5236: * @terminate: last chunk indicator
5237: *
5238: * Try to progress on parsing
5239: *
5240: * Returns zero if no parsing was possible
5241: */
5242: static int
5243: htmlParseTryOrFinish(htmlParserCtxtPtr ctxt, int terminate) {
5244: int ret = 0;
5245: htmlParserInputPtr in;
5246: int avail = 0;
5247: xmlChar cur, next;
5248:
5249: htmlParserNodeInfo node_info;
5250:
5251: #ifdef DEBUG_PUSH
5252: switch (ctxt->instate) {
5253: case XML_PARSER_EOF:
5254: xmlGenericError(xmlGenericErrorContext,
5255: "HPP: try EOF\n"); break;
5256: case XML_PARSER_START:
5257: xmlGenericError(xmlGenericErrorContext,
5258: "HPP: try START\n"); break;
5259: case XML_PARSER_MISC:
5260: xmlGenericError(xmlGenericErrorContext,
5261: "HPP: try MISC\n");break;
5262: case XML_PARSER_COMMENT:
5263: xmlGenericError(xmlGenericErrorContext,
5264: "HPP: try COMMENT\n");break;
5265: case XML_PARSER_PROLOG:
5266: xmlGenericError(xmlGenericErrorContext,
5267: "HPP: try PROLOG\n");break;
5268: case XML_PARSER_START_TAG:
5269: xmlGenericError(xmlGenericErrorContext,
5270: "HPP: try START_TAG\n");break;
5271: case XML_PARSER_CONTENT:
5272: xmlGenericError(xmlGenericErrorContext,
5273: "HPP: try CONTENT\n");break;
5274: case XML_PARSER_CDATA_SECTION:
5275: xmlGenericError(xmlGenericErrorContext,
5276: "HPP: try CDATA_SECTION\n");break;
5277: case XML_PARSER_END_TAG:
5278: xmlGenericError(xmlGenericErrorContext,
5279: "HPP: try END_TAG\n");break;
5280: case XML_PARSER_ENTITY_DECL:
5281: xmlGenericError(xmlGenericErrorContext,
5282: "HPP: try ENTITY_DECL\n");break;
5283: case XML_PARSER_ENTITY_VALUE:
5284: xmlGenericError(xmlGenericErrorContext,
5285: "HPP: try ENTITY_VALUE\n");break;
5286: case XML_PARSER_ATTRIBUTE_VALUE:
5287: xmlGenericError(xmlGenericErrorContext,
5288: "HPP: try ATTRIBUTE_VALUE\n");break;
5289: case XML_PARSER_DTD:
5290: xmlGenericError(xmlGenericErrorContext,
5291: "HPP: try DTD\n");break;
5292: case XML_PARSER_EPILOG:
5293: xmlGenericError(xmlGenericErrorContext,
5294: "HPP: try EPILOG\n");break;
5295: case XML_PARSER_PI:
5296: xmlGenericError(xmlGenericErrorContext,
5297: "HPP: try PI\n");break;
5298: case XML_PARSER_SYSTEM_LITERAL:
5299: xmlGenericError(xmlGenericErrorContext,
5300: "HPP: try SYSTEM_LITERAL\n");break;
5301: }
5302: #endif
5303:
5304: while (1) {
5305:
5306: in = ctxt->input;
5307: if (in == NULL) break;
5308: if (in->buf == NULL)
5309: avail = in->length - (in->cur - in->base);
5310: else
5311: avail = xmlBufUse(in->buf->buffer) - (in->cur - in->base);
5312: if ((avail == 0) && (terminate)) {
5313: htmlAutoCloseOnEnd(ctxt);
5314: if ((ctxt->nameNr == 0) && (ctxt->instate != XML_PARSER_EOF)) {
5315: /*
5316: * SAX: end of the document processing.
5317: */
5318: ctxt->instate = XML_PARSER_EOF;
5319: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
5320: ctxt->sax->endDocument(ctxt->userData);
5321: }
5322: }
5323: if (avail < 1)
5324: goto done;
5325: cur = in->cur[0];
5326: if (cur == 0) {
5327: SKIP(1);
5328: continue;
5329: }
5330:
5331: switch (ctxt->instate) {
5332: case XML_PARSER_EOF:
5333: /*
5334: * Document parsing is done !
5335: */
5336: goto done;
5337: case XML_PARSER_START:
5338: /*
5339: * Very first chars read from the document flow.
5340: */
5341: cur = in->cur[0];
5342: if (IS_BLANK_CH(cur)) {
5343: SKIP_BLANKS;
5344: if (in->buf == NULL)
5345: avail = in->length - (in->cur - in->base);
5346: else
5347: avail = xmlBufUse(in->buf->buffer) - (in->cur - in->base);
5348: }
5349: if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
5350: ctxt->sax->setDocumentLocator(ctxt->userData,
5351: &xmlDefaultSAXLocator);
5352: if ((ctxt->sax) && (ctxt->sax->startDocument) &&
5353: (!ctxt->disableSAX))
5354: ctxt->sax->startDocument(ctxt->userData);
5355:
5356: cur = in->cur[0];
5357: next = in->cur[1];
5358: if ((cur == '<') && (next == '!') &&
5359: (UPP(2) == 'D') && (UPP(3) == 'O') &&
5360: (UPP(4) == 'C') && (UPP(5) == 'T') &&
5361: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
5362: (UPP(8) == 'E')) {
5363: if ((!terminate) &&
5364: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5365: goto done;
5366: #ifdef DEBUG_PUSH
5367: xmlGenericError(xmlGenericErrorContext,
5368: "HPP: Parsing internal subset\n");
5369: #endif
5370: htmlParseDocTypeDecl(ctxt);
5371: ctxt->instate = XML_PARSER_PROLOG;
5372: #ifdef DEBUG_PUSH
5373: xmlGenericError(xmlGenericErrorContext,
5374: "HPP: entering PROLOG\n");
5375: #endif
5376: } else {
5377: ctxt->instate = XML_PARSER_MISC;
5378: #ifdef DEBUG_PUSH
5379: xmlGenericError(xmlGenericErrorContext,
5380: "HPP: entering MISC\n");
5381: #endif
5382: }
5383: break;
5384: case XML_PARSER_MISC:
5385: SKIP_BLANKS;
5386: if (in->buf == NULL)
5387: avail = in->length - (in->cur - in->base);
5388: else
5389: avail = xmlBufUse(in->buf->buffer) - (in->cur - in->base);
5390: /*
5391: * no chars in buffer
5392: */
5393: if (avail < 1)
5394: goto done;
5395: /*
5396: * not enouth chars in buffer
5397: */
5398: if (avail < 2) {
5399: if (!terminate)
5400: goto done;
5401: else
5402: next = ' ';
5403: } else {
5404: next = in->cur[1];
5405: }
5406: cur = in->cur[0];
5407: if ((cur == '<') && (next == '!') &&
5408: (in->cur[2] == '-') && (in->cur[3] == '-')) {
5409: if ((!terminate) &&
5410: (htmlParseLookupSequence(ctxt, '-', '-', '>', 1, 1) < 0))
5411: goto done;
5412: #ifdef DEBUG_PUSH
5413: xmlGenericError(xmlGenericErrorContext,
5414: "HPP: Parsing Comment\n");
5415: #endif
5416: htmlParseComment(ctxt);
5417: ctxt->instate = XML_PARSER_MISC;
5418: } else if ((cur == '<') && (next == '?')) {
5419: if ((!terminate) &&
5420: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5421: goto done;
5422: #ifdef DEBUG_PUSH
5423: xmlGenericError(xmlGenericErrorContext,
5424: "HPP: Parsing PI\n");
5425: #endif
5426: htmlParsePI(ctxt);
5427: ctxt->instate = XML_PARSER_MISC;
5428: } else if ((cur == '<') && (next == '!') &&
5429: (UPP(2) == 'D') && (UPP(3) == 'O') &&
5430: (UPP(4) == 'C') && (UPP(5) == 'T') &&
5431: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
5432: (UPP(8) == 'E')) {
5433: if ((!terminate) &&
5434: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5435: goto done;
5436: #ifdef DEBUG_PUSH
5437: xmlGenericError(xmlGenericErrorContext,
5438: "HPP: Parsing internal subset\n");
5439: #endif
5440: htmlParseDocTypeDecl(ctxt);
5441: ctxt->instate = XML_PARSER_PROLOG;
5442: #ifdef DEBUG_PUSH
5443: xmlGenericError(xmlGenericErrorContext,
5444: "HPP: entering PROLOG\n");
5445: #endif
5446: } else if ((cur == '<') && (next == '!') &&
5447: (avail < 9)) {
5448: goto done;
5449: } else {
5450: ctxt->instate = XML_PARSER_START_TAG;
5451: #ifdef DEBUG_PUSH
5452: xmlGenericError(xmlGenericErrorContext,
5453: "HPP: entering START_TAG\n");
5454: #endif
5455: }
5456: break;
5457: case XML_PARSER_PROLOG:
5458: SKIP_BLANKS;
5459: if (in->buf == NULL)
5460: avail = in->length - (in->cur - in->base);
5461: else
5462: avail = xmlBufUse(in->buf->buffer) - (in->cur - in->base);
5463: if (avail < 2)
5464: goto done;
5465: cur = in->cur[0];
5466: next = in->cur[1];
5467: if ((cur == '<') && (next == '!') &&
5468: (in->cur[2] == '-') && (in->cur[3] == '-')) {
5469: if ((!terminate) &&
5470: (htmlParseLookupSequence(ctxt, '-', '-', '>', 1, 1) < 0))
5471: goto done;
5472: #ifdef DEBUG_PUSH
5473: xmlGenericError(xmlGenericErrorContext,
5474: "HPP: Parsing Comment\n");
5475: #endif
5476: htmlParseComment(ctxt);
5477: ctxt->instate = XML_PARSER_PROLOG;
5478: } else if ((cur == '<') && (next == '?')) {
5479: if ((!terminate) &&
5480: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5481: goto done;
5482: #ifdef DEBUG_PUSH
5483: xmlGenericError(xmlGenericErrorContext,
5484: "HPP: Parsing PI\n");
5485: #endif
5486: htmlParsePI(ctxt);
5487: ctxt->instate = XML_PARSER_PROLOG;
5488: } else if ((cur == '<') && (next == '!') &&
5489: (avail < 4)) {
5490: goto done;
5491: } else {
5492: ctxt->instate = XML_PARSER_START_TAG;
5493: #ifdef DEBUG_PUSH
5494: xmlGenericError(xmlGenericErrorContext,
5495: "HPP: entering START_TAG\n");
5496: #endif
5497: }
5498: break;
5499: case XML_PARSER_EPILOG:
5500: if (in->buf == NULL)
5501: avail = in->length - (in->cur - in->base);
5502: else
5503: avail = xmlBufUse(in->buf->buffer) - (in->cur - in->base);
5504: if (avail < 1)
5505: goto done;
5506: cur = in->cur[0];
5507: if (IS_BLANK_CH(cur)) {
5508: htmlParseCharData(ctxt);
5509: goto done;
5510: }
5511: if (avail < 2)
5512: goto done;
5513: next = in->cur[1];
5514: if ((cur == '<') && (next == '!') &&
5515: (in->cur[2] == '-') && (in->cur[3] == '-')) {
5516: if ((!terminate) &&
5517: (htmlParseLookupSequence(ctxt, '-', '-', '>', 1, 1) < 0))
5518: goto done;
5519: #ifdef DEBUG_PUSH
5520: xmlGenericError(xmlGenericErrorContext,
5521: "HPP: Parsing Comment\n");
5522: #endif
5523: htmlParseComment(ctxt);
5524: ctxt->instate = XML_PARSER_EPILOG;
5525: } else if ((cur == '<') && (next == '?')) {
5526: if ((!terminate) &&
5527: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5528: goto done;
5529: #ifdef DEBUG_PUSH
5530: xmlGenericError(xmlGenericErrorContext,
5531: "HPP: Parsing PI\n");
5532: #endif
5533: htmlParsePI(ctxt);
5534: ctxt->instate = XML_PARSER_EPILOG;
5535: } else if ((cur == '<') && (next == '!') &&
5536: (avail < 4)) {
5537: goto done;
5538: } else {
5539: ctxt->errNo = XML_ERR_DOCUMENT_END;
5540: ctxt->wellFormed = 0;
5541: ctxt->instate = XML_PARSER_EOF;
5542: #ifdef DEBUG_PUSH
5543: xmlGenericError(xmlGenericErrorContext,
5544: "HPP: entering EOF\n");
5545: #endif
5546: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
5547: ctxt->sax->endDocument(ctxt->userData);
5548: goto done;
5549: }
5550: break;
5551: case XML_PARSER_START_TAG: {
5552: const xmlChar *name;
5553: int failed;
5554: const htmlElemDesc * info;
5555:
5556: /*
5557: * no chars in buffer
5558: */
5559: if (avail < 1)
5560: goto done;
5561: /*
5562: * not enouth chars in buffer
5563: */
5564: if (avail < 2) {
5565: if (!terminate)
5566: goto done;
5567: else
5568: next = ' ';
5569: } else {
5570: next = in->cur[1];
5571: }
5572: cur = in->cur[0];
5573: if (cur != '<') {
5574: ctxt->instate = XML_PARSER_CONTENT;
5575: #ifdef DEBUG_PUSH
5576: xmlGenericError(xmlGenericErrorContext,
5577: "HPP: entering CONTENT\n");
5578: #endif
5579: break;
5580: }
5581: if (next == '/') {
5582: ctxt->instate = XML_PARSER_END_TAG;
5583: ctxt->checkIndex = 0;
5584: #ifdef DEBUG_PUSH
5585: xmlGenericError(xmlGenericErrorContext,
5586: "HPP: entering END_TAG\n");
5587: #endif
5588: break;
5589: }
5590: if ((!terminate) &&
5591: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5592: goto done;
5593:
5594: /* Capture start position */
5595: if (ctxt->record_info) {
5596: node_info.begin_pos = ctxt->input->consumed +
5597: (CUR_PTR - ctxt->input->base);
5598: node_info.begin_line = ctxt->input->line;
5599: }
5600:
5601:
5602: failed = htmlParseStartTag(ctxt);
5603: name = ctxt->name;
5604: if ((failed == -1) ||
5605: (name == NULL)) {
5606: if (CUR == '>')
5607: NEXT;
5608: break;
5609: }
5610:
5611: /*
5612: * Lookup the info for that element.
5613: */
5614: info = htmlTagLookup(name);
5615: if (info == NULL) {
5616: htmlParseErr(ctxt, XML_HTML_UNKNOWN_TAG,
5617: "Tag %s invalid\n", name, NULL);
5618: }
5619:
5620: /*
5621: * Check for an Empty Element labeled the XML/SGML way
5622: */
5623: if ((CUR == '/') && (NXT(1) == '>')) {
5624: SKIP(2);
5625: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
5626: ctxt->sax->endElement(ctxt->userData, name);
5627: htmlnamePop(ctxt);
5628: ctxt->instate = XML_PARSER_CONTENT;
5629: #ifdef DEBUG_PUSH
5630: xmlGenericError(xmlGenericErrorContext,
5631: "HPP: entering CONTENT\n");
5632: #endif
5633: break;
5634: }
5635:
5636: if (CUR == '>') {
5637: NEXT;
5638: } else {
5639: htmlParseErr(ctxt, XML_ERR_GT_REQUIRED,
5640: "Couldn't find end of Start Tag %s\n",
5641: name, NULL);
5642:
5643: /*
5644: * end of parsing of this node.
5645: */
5646: if (xmlStrEqual(name, ctxt->name)) {
5647: nodePop(ctxt);
5648: htmlnamePop(ctxt);
5649: }
5650:
5651: if (ctxt->record_info)
5652: htmlNodeInfoPush(ctxt, &node_info);
5653:
5654: ctxt->instate = XML_PARSER_CONTENT;
5655: #ifdef DEBUG_PUSH
5656: xmlGenericError(xmlGenericErrorContext,
5657: "HPP: entering CONTENT\n");
5658: #endif
5659: break;
5660: }
5661:
5662: /*
5663: * Check for an Empty Element from DTD definition
5664: */
5665: if ((info != NULL) && (info->empty)) {
5666: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
5667: ctxt->sax->endElement(ctxt->userData, name);
5668: htmlnamePop(ctxt);
5669: }
5670:
5671: if (ctxt->record_info)
5672: htmlNodeInfoPush(ctxt, &node_info);
5673:
5674: ctxt->instate = XML_PARSER_CONTENT;
5675: #ifdef DEBUG_PUSH
5676: xmlGenericError(xmlGenericErrorContext,
5677: "HPP: entering CONTENT\n");
5678: #endif
5679: break;
5680: }
5681: case XML_PARSER_CONTENT: {
5682: long cons;
5683: /*
5684: * Handle preparsed entities and charRef
5685: */
5686: if (ctxt->token != 0) {
5687: xmlChar chr[2] = { 0 , 0 } ;
5688:
5689: chr[0] = (xmlChar) ctxt->token;
5690: htmlCheckParagraph(ctxt);
5691: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
5692: ctxt->sax->characters(ctxt->userData, chr, 1);
5693: ctxt->token = 0;
5694: ctxt->checkIndex = 0;
5695: }
5696: if ((avail == 1) && (terminate)) {
5697: cur = in->cur[0];
5698: if ((cur != '<') && (cur != '&')) {
5699: if (ctxt->sax != NULL) {
5700: if (IS_BLANK_CH(cur)) {
5701: if (ctxt->keepBlanks) {
5702: if (ctxt->sax->characters != NULL)
5703: ctxt->sax->characters(
5704: ctxt->userData, &cur, 1);
5705: } else {
5706: if (ctxt->sax->ignorableWhitespace != NULL)
5707: ctxt->sax->ignorableWhitespace(
5708: ctxt->userData, &cur, 1);
5709: }
5710: } else {
5711: htmlCheckParagraph(ctxt);
5712: if (ctxt->sax->characters != NULL)
5713: ctxt->sax->characters(
5714: ctxt->userData, &cur, 1);
5715: }
5716: }
5717: ctxt->token = 0;
5718: ctxt->checkIndex = 0;
5719: in->cur++;
5720: break;
5721: }
5722: }
5723: if (avail < 2)
5724: goto done;
5725: cur = in->cur[0];
5726: next = in->cur[1];
5727: cons = ctxt->nbChars;
5728: if ((xmlStrEqual(ctxt->name, BAD_CAST"script")) ||
5729: (xmlStrEqual(ctxt->name, BAD_CAST"style"))) {
5730: /*
5731: * Handle SCRIPT/STYLE separately
5732: */
5733: if (!terminate) {
5734: int idx;
5735: xmlChar val;
5736:
5737: idx = htmlParseLookupSequence(ctxt, '<', '/', 0, 0, 0);
5738: if (idx < 0)
5739: goto done;
5740: val = in->cur[idx + 2];
5741: if (val == 0) /* bad cut of input */
5742: goto done;
5743: }
5744: htmlParseScript(ctxt);
5745: if ((cur == '<') && (next == '/')) {
5746: ctxt->instate = XML_PARSER_END_TAG;
5747: ctxt->checkIndex = 0;
5748: #ifdef DEBUG_PUSH
5749: xmlGenericError(xmlGenericErrorContext,
5750: "HPP: entering END_TAG\n");
5751: #endif
5752: break;
5753: }
5754: } else {
5755: /*
5756: * Sometimes DOCTYPE arrives in the middle of the document
5757: */
5758: if ((cur == '<') && (next == '!') &&
5759: (UPP(2) == 'D') && (UPP(3) == 'O') &&
5760: (UPP(4) == 'C') && (UPP(5) == 'T') &&
5761: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
5762: (UPP(8) == 'E')) {
5763: if ((!terminate) &&
5764: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5765: goto done;
5766: htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
5767: "Misplaced DOCTYPE declaration\n",
5768: BAD_CAST "DOCTYPE" , NULL);
5769: htmlParseDocTypeDecl(ctxt);
5770: } else if ((cur == '<') && (next == '!') &&
5771: (in->cur[2] == '-') && (in->cur[3] == '-')) {
5772: if ((!terminate) &&
5773: (htmlParseLookupSequence(
5774: ctxt, '-', '-', '>', 1, 1) < 0))
5775: goto done;
5776: #ifdef DEBUG_PUSH
5777: xmlGenericError(xmlGenericErrorContext,
5778: "HPP: Parsing Comment\n");
5779: #endif
5780: htmlParseComment(ctxt);
5781: ctxt->instate = XML_PARSER_CONTENT;
5782: } else if ((cur == '<') && (next == '?')) {
5783: if ((!terminate) &&
5784: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5785: goto done;
5786: #ifdef DEBUG_PUSH
5787: xmlGenericError(xmlGenericErrorContext,
5788: "HPP: Parsing PI\n");
5789: #endif
5790: htmlParsePI(ctxt);
5791: ctxt->instate = XML_PARSER_CONTENT;
5792: } else if ((cur == '<') && (next == '!') && (avail < 4)) {
5793: goto done;
5794: } else if ((cur == '<') && (next == '/')) {
5795: ctxt->instate = XML_PARSER_END_TAG;
5796: ctxt->checkIndex = 0;
5797: #ifdef DEBUG_PUSH
5798: xmlGenericError(xmlGenericErrorContext,
5799: "HPP: entering END_TAG\n");
5800: #endif
5801: break;
5802: } else if (cur == '<') {
5803: ctxt->instate = XML_PARSER_START_TAG;
5804: ctxt->checkIndex = 0;
5805: #ifdef DEBUG_PUSH
5806: xmlGenericError(xmlGenericErrorContext,
5807: "HPP: entering START_TAG\n");
5808: #endif
5809: break;
5810: } else if (cur == '&') {
5811: if ((!terminate) &&
5812: (htmlParseLookupChars(ctxt,
5813: BAD_CAST "; >/", 4) < 0))
5814: goto done;
5815: #ifdef DEBUG_PUSH
5816: xmlGenericError(xmlGenericErrorContext,
5817: "HPP: Parsing Reference\n");
5818: #endif
5819: /* TODO: check generation of subtrees if noent !!! */
5820: htmlParseReference(ctxt);
5821: } else {
5822: /*
5823: * check that the text sequence is complete
5824: * before handing out the data to the parser
5825: * to avoid problems with erroneous end of
5826: * data detection.
5827: */
5828: if ((!terminate) &&
5829: (htmlParseLookupChars(ctxt, BAD_CAST "<&", 2) < 0))
5830: goto done;
5831: ctxt->checkIndex = 0;
5832: #ifdef DEBUG_PUSH
5833: xmlGenericError(xmlGenericErrorContext,
5834: "HPP: Parsing char data\n");
5835: #endif
5836: htmlParseCharData(ctxt);
5837: }
5838: }
5839: if (cons == ctxt->nbChars) {
5840: if (ctxt->node != NULL) {
5841: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5842: "detected an error in element content\n",
5843: NULL, NULL);
5844: }
5845: NEXT;
5846: break;
5847: }
5848:
5849: break;
5850: }
5851: case XML_PARSER_END_TAG:
5852: if (avail < 2)
5853: goto done;
5854: if ((!terminate) &&
5855: (htmlParseLookupSequence(ctxt, '>', 0, 0, 0, 1) < 0))
5856: goto done;
5857: htmlParseEndTag(ctxt);
5858: if (ctxt->nameNr == 0) {
5859: ctxt->instate = XML_PARSER_EPILOG;
5860: } else {
5861: ctxt->instate = XML_PARSER_CONTENT;
5862: }
5863: ctxt->checkIndex = 0;
5864: #ifdef DEBUG_PUSH
5865: xmlGenericError(xmlGenericErrorContext,
5866: "HPP: entering CONTENT\n");
5867: #endif
5868: break;
5869: case XML_PARSER_CDATA_SECTION:
5870: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5871: "HPP: internal error, state == CDATA\n",
5872: NULL, NULL);
5873: ctxt->instate = XML_PARSER_CONTENT;
5874: ctxt->checkIndex = 0;
5875: #ifdef DEBUG_PUSH
5876: xmlGenericError(xmlGenericErrorContext,
5877: "HPP: entering CONTENT\n");
5878: #endif
5879: break;
5880: case XML_PARSER_DTD:
5881: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5882: "HPP: internal error, state == DTD\n",
5883: NULL, NULL);
5884: ctxt->instate = XML_PARSER_CONTENT;
5885: ctxt->checkIndex = 0;
5886: #ifdef DEBUG_PUSH
5887: xmlGenericError(xmlGenericErrorContext,
5888: "HPP: entering CONTENT\n");
5889: #endif
5890: break;
5891: case XML_PARSER_COMMENT:
5892: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5893: "HPP: internal error, state == COMMENT\n",
5894: NULL, NULL);
5895: ctxt->instate = XML_PARSER_CONTENT;
5896: ctxt->checkIndex = 0;
5897: #ifdef DEBUG_PUSH
5898: xmlGenericError(xmlGenericErrorContext,
5899: "HPP: entering CONTENT\n");
5900: #endif
5901: break;
5902: case XML_PARSER_PI:
5903: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5904: "HPP: internal error, state == PI\n",
5905: NULL, NULL);
5906: ctxt->instate = XML_PARSER_CONTENT;
5907: ctxt->checkIndex = 0;
5908: #ifdef DEBUG_PUSH
5909: xmlGenericError(xmlGenericErrorContext,
5910: "HPP: entering CONTENT\n");
5911: #endif
5912: break;
5913: case XML_PARSER_ENTITY_DECL:
5914: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5915: "HPP: internal error, state == ENTITY_DECL\n",
5916: NULL, NULL);
5917: ctxt->instate = XML_PARSER_CONTENT;
5918: ctxt->checkIndex = 0;
5919: #ifdef DEBUG_PUSH
5920: xmlGenericError(xmlGenericErrorContext,
5921: "HPP: entering CONTENT\n");
5922: #endif
5923: break;
5924: case XML_PARSER_ENTITY_VALUE:
5925: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5926: "HPP: internal error, state == ENTITY_VALUE\n",
5927: NULL, NULL);
5928: ctxt->instate = XML_PARSER_CONTENT;
5929: ctxt->checkIndex = 0;
5930: #ifdef DEBUG_PUSH
5931: xmlGenericError(xmlGenericErrorContext,
5932: "HPP: entering DTD\n");
5933: #endif
5934: break;
5935: case XML_PARSER_ATTRIBUTE_VALUE:
5936: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5937: "HPP: internal error, state == ATTRIBUTE_VALUE\n",
5938: NULL, NULL);
5939: ctxt->instate = XML_PARSER_START_TAG;
5940: ctxt->checkIndex = 0;
5941: #ifdef DEBUG_PUSH
5942: xmlGenericError(xmlGenericErrorContext,
5943: "HPP: entering START_TAG\n");
5944: #endif
5945: break;
5946: case XML_PARSER_SYSTEM_LITERAL:
5947: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5948: "HPP: internal error, state == XML_PARSER_SYSTEM_LITERAL\n",
5949: NULL, NULL);
5950: ctxt->instate = XML_PARSER_CONTENT;
5951: ctxt->checkIndex = 0;
5952: #ifdef DEBUG_PUSH
5953: xmlGenericError(xmlGenericErrorContext,
5954: "HPP: entering CONTENT\n");
5955: #endif
5956: break;
5957: case XML_PARSER_IGNORE:
5958: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5959: "HPP: internal error, state == XML_PARSER_IGNORE\n",
5960: NULL, NULL);
5961: ctxt->instate = XML_PARSER_CONTENT;
5962: ctxt->checkIndex = 0;
5963: #ifdef DEBUG_PUSH
5964: xmlGenericError(xmlGenericErrorContext,
5965: "HPP: entering CONTENT\n");
5966: #endif
5967: break;
5968: case XML_PARSER_PUBLIC_LITERAL:
5969: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
5970: "HPP: internal error, state == XML_PARSER_LITERAL\n",
5971: NULL, NULL);
5972: ctxt->instate = XML_PARSER_CONTENT;
5973: ctxt->checkIndex = 0;
5974: #ifdef DEBUG_PUSH
5975: xmlGenericError(xmlGenericErrorContext,
5976: "HPP: entering CONTENT\n");
5977: #endif
5978: break;
5979:
5980: }
5981: }
5982: done:
5983: if ((avail == 0) && (terminate)) {
5984: htmlAutoCloseOnEnd(ctxt);
5985: if ((ctxt->nameNr == 0) && (ctxt->instate != XML_PARSER_EOF)) {
5986: /*
5987: * SAX: end of the document processing.
5988: */
5989: ctxt->instate = XML_PARSER_EOF;
5990: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
5991: ctxt->sax->endDocument(ctxt->userData);
5992: }
5993: }
5994: if ((ctxt->myDoc != NULL) &&
5995: ((terminate) || (ctxt->instate == XML_PARSER_EOF) ||
5996: (ctxt->instate == XML_PARSER_EPILOG))) {
5997: xmlDtdPtr dtd;
5998: dtd = xmlGetIntSubset(ctxt->myDoc);
5999: if (dtd == NULL)
6000: ctxt->myDoc->intSubset =
6001: xmlCreateIntSubset(ctxt->myDoc, BAD_CAST "html",
6002: BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN",
6003: BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd");
6004: }
6005: #ifdef DEBUG_PUSH
6006: xmlGenericError(xmlGenericErrorContext, "HPP: done %d\n", ret);
6007: #endif
6008: return(ret);
6009: }
6010:
6011: /**
6012: * htmlParseChunk:
6013: * @ctxt: an HTML parser context
6014: * @chunk: an char array
6015: * @size: the size in byte of the chunk
6016: * @terminate: last chunk indicator
6017: *
6018: * Parse a Chunk of memory
6019: *
6020: * Returns zero if no error, the xmlParserErrors otherwise.
6021: */
6022: int
6023: htmlParseChunk(htmlParserCtxtPtr ctxt, const char *chunk, int size,
6024: int terminate) {
6025: if ((ctxt == NULL) || (ctxt->input == NULL)) {
6026: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
6027: "htmlParseChunk: context error\n", NULL, NULL);
6028: return(XML_ERR_INTERNAL_ERROR);
6029: }
6030: if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) &&
6031: (ctxt->input->buf != NULL) && (ctxt->instate != XML_PARSER_EOF)) {
6032: size_t base = xmlBufGetInputBase(ctxt->input->buf->buffer, ctxt->input);
6033: size_t cur = ctxt->input->cur - ctxt->input->base;
6034: int res;
6035:
6036: res = xmlParserInputBufferPush(ctxt->input->buf, size, chunk);
6037: if (res < 0) {
6038: ctxt->errNo = XML_PARSER_EOF;
6039: ctxt->disableSAX = 1;
6040: return (XML_PARSER_EOF);
6041: }
6042: xmlBufSetInputBaseCur(ctxt->input->buf->buffer, ctxt->input, base, cur);
6043: #ifdef DEBUG_PUSH
6044: xmlGenericError(xmlGenericErrorContext, "HPP: pushed %d\n", size);
6045: #endif
6046:
6047: #if 0
6048: if ((terminate) || (ctxt->input->buf->buffer->use > 80))
6049: htmlParseTryOrFinish(ctxt, terminate);
6050: #endif
6051: } else if (ctxt->instate != XML_PARSER_EOF) {
6052: if ((ctxt->input != NULL) && ctxt->input->buf != NULL) {
6053: xmlParserInputBufferPtr in = ctxt->input->buf;
6054: if ((in->encoder != NULL) && (in->buffer != NULL) &&
6055: (in->raw != NULL)) {
6056: int nbchars;
6057: size_t base = xmlBufGetInputBase(in->buffer, ctxt->input);
6058: size_t current = ctxt->input->cur - ctxt->input->base;
6059:
6060: nbchars = xmlCharEncInput(in, terminate);
6061: if (nbchars < 0) {
6062: htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
6063: "encoder error\n", NULL, NULL);
6064: return(XML_ERR_INVALID_ENCODING);
6065: }
6066: xmlBufSetInputBaseCur(in->buffer, ctxt->input, base, current);
6067: }
6068: }
6069: }
6070: htmlParseTryOrFinish(ctxt, terminate);
6071: if (terminate) {
6072: if ((ctxt->instate != XML_PARSER_EOF) &&
6073: (ctxt->instate != XML_PARSER_EPILOG) &&
6074: (ctxt->instate != XML_PARSER_MISC)) {
6075: ctxt->errNo = XML_ERR_DOCUMENT_END;
6076: ctxt->wellFormed = 0;
6077: }
6078: if (ctxt->instate != XML_PARSER_EOF) {
6079: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
6080: ctxt->sax->endDocument(ctxt->userData);
6081: }
6082: ctxt->instate = XML_PARSER_EOF;
6083: }
6084: return((xmlParserErrors) ctxt->errNo);
6085: }
6086:
6087: /************************************************************************
6088: * *
6089: * User entry points *
6090: * *
6091: ************************************************************************/
6092:
6093: /**
6094: * htmlCreatePushParserCtxt:
6095: * @sax: a SAX handler
6096: * @user_data: The user data returned on SAX callbacks
6097: * @chunk: a pointer to an array of chars
6098: * @size: number of chars in the array
6099: * @filename: an optional file name or URI
6100: * @enc: an optional encoding
6101: *
6102: * Create a parser context for using the HTML parser in push mode
6103: * The value of @filename is used for fetching external entities
6104: * and error/warning reports.
6105: *
6106: * Returns the new parser context or NULL
6107: */
6108: htmlParserCtxtPtr
6109: htmlCreatePushParserCtxt(htmlSAXHandlerPtr sax, void *user_data,
6110: const char *chunk, int size, const char *filename,
6111: xmlCharEncoding enc) {
6112: htmlParserCtxtPtr ctxt;
6113: htmlParserInputPtr inputStream;
6114: xmlParserInputBufferPtr buf;
6115:
6116: xmlInitParser();
6117:
6118: buf = xmlAllocParserInputBuffer(enc);
6119: if (buf == NULL) return(NULL);
6120:
6121: ctxt = htmlNewParserCtxt();
6122: if (ctxt == NULL) {
6123: xmlFreeParserInputBuffer(buf);
6124: return(NULL);
6125: }
6126: if(enc==XML_CHAR_ENCODING_UTF8 || buf->encoder)
6127: ctxt->charset=XML_CHAR_ENCODING_UTF8;
6128: if (sax != NULL) {
6129: if (ctxt->sax != (xmlSAXHandlerPtr) &htmlDefaultSAXHandler)
6130: xmlFree(ctxt->sax);
6131: ctxt->sax = (htmlSAXHandlerPtr) xmlMalloc(sizeof(htmlSAXHandler));
6132: if (ctxt->sax == NULL) {
6133: xmlFree(buf);
6134: xmlFree(ctxt);
6135: return(NULL);
6136: }
6137: memcpy(ctxt->sax, sax, sizeof(htmlSAXHandler));
6138: if (user_data != NULL)
6139: ctxt->userData = user_data;
6140: }
6141: if (filename == NULL) {
6142: ctxt->directory = NULL;
6143: } else {
6144: ctxt->directory = xmlParserGetDirectory(filename);
6145: }
6146:
6147: inputStream = htmlNewInputStream(ctxt);
6148: if (inputStream == NULL) {
6149: xmlFreeParserCtxt(ctxt);
6150: xmlFree(buf);
6151: return(NULL);
6152: }
6153:
6154: if (filename == NULL)
6155: inputStream->filename = NULL;
6156: else
6157: inputStream->filename = (char *)
6158: xmlCanonicPath((const xmlChar *) filename);
6159: inputStream->buf = buf;
6160: xmlBufResetInput(buf->buffer, inputStream);
6161:
6162: inputPush(ctxt, inputStream);
6163:
6164: if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) &&
6165: (ctxt->input->buf != NULL)) {
6166: size_t base = xmlBufGetInputBase(ctxt->input->buf->buffer, ctxt->input);
6167: size_t cur = ctxt->input->cur - ctxt->input->base;
6168:
6169: xmlParserInputBufferPush(ctxt->input->buf, size, chunk);
6170:
6171: xmlBufSetInputBaseCur(ctxt->input->buf->buffer, ctxt->input, base, cur);
6172: #ifdef DEBUG_PUSH
6173: xmlGenericError(xmlGenericErrorContext, "HPP: pushed %d\n", size);
6174: #endif
6175: }
6176: ctxt->progressive = 1;
6177:
6178: return(ctxt);
6179: }
6180: #endif /* LIBXML_PUSH_ENABLED */
6181:
6182: /**
6183: * htmlSAXParseDoc:
6184: * @cur: a pointer to an array of xmlChar
6185: * @encoding: a free form C string describing the HTML document encoding, or NULL
6186: * @sax: the SAX handler block
6187: * @userData: if using SAX, this pointer will be provided on callbacks.
6188: *
6189: * Parse an HTML in-memory document. If sax is not NULL, use the SAX callbacks
6190: * to handle parse events. If sax is NULL, fallback to the default DOM
6191: * behavior and return a tree.
6192: *
6193: * Returns the resulting document tree unless SAX is NULL or the document is
6194: * not well formed.
6195: */
6196:
6197: htmlDocPtr
6198: htmlSAXParseDoc(xmlChar *cur, const char *encoding, htmlSAXHandlerPtr sax, void *userData) {
6199: htmlDocPtr ret;
6200: htmlParserCtxtPtr ctxt;
6201:
6202: xmlInitParser();
6203:
6204: if (cur == NULL) return(NULL);
6205:
6206:
6207: ctxt = htmlCreateDocParserCtxt(cur, encoding);
6208: if (ctxt == NULL) return(NULL);
6209: if (sax != NULL) {
6210: if (ctxt->sax != NULL) xmlFree (ctxt->sax);
6211: ctxt->sax = sax;
6212: ctxt->userData = userData;
6213: }
6214:
6215: htmlParseDocument(ctxt);
6216: ret = ctxt->myDoc;
6217: if (sax != NULL) {
6218: ctxt->sax = NULL;
6219: ctxt->userData = NULL;
6220: }
6221: htmlFreeParserCtxt(ctxt);
6222:
6223: return(ret);
6224: }
6225:
6226: /**
6227: * htmlParseDoc:
6228: * @cur: a pointer to an array of xmlChar
6229: * @encoding: a free form C string describing the HTML document encoding, or NULL
6230: *
6231: * parse an HTML in-memory document and build a tree.
6232: *
6233: * Returns the resulting document tree
6234: */
6235:
6236: htmlDocPtr
6237: htmlParseDoc(xmlChar *cur, const char *encoding) {
6238: return(htmlSAXParseDoc(cur, encoding, NULL, NULL));
6239: }
6240:
6241:
6242: /**
6243: * htmlCreateFileParserCtxt:
6244: * @filename: the filename
6245: * @encoding: a free form C string describing the HTML document encoding, or NULL
6246: *
6247: * Create a parser context for a file content.
6248: * Automatic support for ZLIB/Compress compressed document is provided
6249: * by default if found at compile-time.
6250: *
6251: * Returns the new parser context or NULL
6252: */
6253: htmlParserCtxtPtr
6254: htmlCreateFileParserCtxt(const char *filename, const char *encoding)
6255: {
6256: htmlParserCtxtPtr ctxt;
6257: htmlParserInputPtr inputStream;
6258: char *canonicFilename;
6259: /* htmlCharEncoding enc; */
6260: xmlChar *content, *content_line = (xmlChar *) "charset=";
6261:
6262: if (filename == NULL)
6263: return(NULL);
6264:
6265: ctxt = htmlNewParserCtxt();
6266: if (ctxt == NULL) {
6267: return(NULL);
6268: }
6269: canonicFilename = (char *) xmlCanonicPath((const xmlChar *) filename);
6270: if (canonicFilename == NULL) {
6271: #ifdef LIBXML_SAX1_ENABLED
6272: if (xmlDefaultSAXHandler.error != NULL) {
6273: xmlDefaultSAXHandler.error(NULL, "out of memory\n");
6274: }
6275: #endif
6276: xmlFreeParserCtxt(ctxt);
6277: return(NULL);
6278: }
6279:
6280: inputStream = xmlLoadExternalEntity(canonicFilename, NULL, ctxt);
6281: xmlFree(canonicFilename);
6282: if (inputStream == NULL) {
6283: xmlFreeParserCtxt(ctxt);
6284: return(NULL);
6285: }
6286:
6287: inputPush(ctxt, inputStream);
6288:
6289: /* set encoding */
6290: if (encoding) {
6291: content = xmlMallocAtomic (xmlStrlen(content_line) + strlen(encoding) + 1);
6292: if (content) {
6293: strcpy ((char *)content, (char *)content_line);
6294: strcat ((char *)content, (char *)encoding);
6295: htmlCheckEncoding (ctxt, content);
6296: xmlFree (content);
6297: }
6298: }
6299:
6300: return(ctxt);
6301: }
6302:
6303: /**
6304: * htmlSAXParseFile:
6305: * @filename: the filename
6306: * @encoding: a free form C string describing the HTML document encoding, or NULL
6307: * @sax: the SAX handler block
6308: * @userData: if using SAX, this pointer will be provided on callbacks.
6309: *
6310: * parse an HTML file and build a tree. Automatic support for ZLIB/Compress
6311: * compressed document is provided by default if found at compile-time.
6312: * It use the given SAX function block to handle the parsing callback.
6313: * If sax is NULL, fallback to the default DOM tree building routines.
6314: *
6315: * Returns the resulting document tree unless SAX is NULL or the document is
6316: * not well formed.
6317: */
6318:
6319: htmlDocPtr
6320: htmlSAXParseFile(const char *filename, const char *encoding, htmlSAXHandlerPtr sax,
6321: void *userData) {
6322: htmlDocPtr ret;
6323: htmlParserCtxtPtr ctxt;
6324: htmlSAXHandlerPtr oldsax = NULL;
6325:
6326: xmlInitParser();
6327:
6328: ctxt = htmlCreateFileParserCtxt(filename, encoding);
6329: if (ctxt == NULL) return(NULL);
6330: if (sax != NULL) {
6331: oldsax = ctxt->sax;
6332: ctxt->sax = sax;
6333: ctxt->userData = userData;
6334: }
6335:
6336: htmlParseDocument(ctxt);
6337:
6338: ret = ctxt->myDoc;
6339: if (sax != NULL) {
6340: ctxt->sax = oldsax;
6341: ctxt->userData = NULL;
6342: }
6343: htmlFreeParserCtxt(ctxt);
6344:
6345: return(ret);
6346: }
6347:
6348: /**
6349: * htmlParseFile:
6350: * @filename: the filename
6351: * @encoding: a free form C string describing the HTML document encoding, or NULL
6352: *
6353: * parse an HTML file and build a tree. Automatic support for ZLIB/Compress
6354: * compressed document is provided by default if found at compile-time.
6355: *
6356: * Returns the resulting document tree
6357: */
6358:
6359: htmlDocPtr
6360: htmlParseFile(const char *filename, const char *encoding) {
6361: return(htmlSAXParseFile(filename, encoding, NULL, NULL));
6362: }
6363:
6364: /**
6365: * htmlHandleOmittedElem:
6366: * @val: int 0 or 1
6367: *
6368: * Set and return the previous value for handling HTML omitted tags.
6369: *
6370: * Returns the last value for 0 for no handling, 1 for auto insertion.
6371: */
6372:
6373: int
6374: htmlHandleOmittedElem(int val) {
6375: int old = htmlOmittedDefaultValue;
6376:
6377: htmlOmittedDefaultValue = val;
6378: return(old);
6379: }
6380:
6381: /**
6382: * htmlElementAllowedHere:
6383: * @parent: HTML parent element
6384: * @elt: HTML element
6385: *
6386: * Checks whether an HTML element may be a direct child of a parent element.
6387: * Note - doesn't check for deprecated elements
6388: *
6389: * Returns 1 if allowed; 0 otherwise.
6390: */
6391: int
6392: htmlElementAllowedHere(const htmlElemDesc* parent, const xmlChar* elt) {
6393: const char** p ;
6394:
6395: if ( ! elt || ! parent || ! parent->subelts )
6396: return 0 ;
6397:
6398: for ( p = parent->subelts; *p; ++p )
6399: if ( !xmlStrcmp((const xmlChar *)*p, elt) )
6400: return 1 ;
6401:
6402: return 0 ;
6403: }
6404: /**
6405: * htmlElementStatusHere:
6406: * @parent: HTML parent element
6407: * @elt: HTML element
6408: *
6409: * Checks whether an HTML element may be a direct child of a parent element.
6410: * and if so whether it is valid or deprecated.
6411: *
6412: * Returns one of HTML_VALID, HTML_DEPRECATED, HTML_INVALID
6413: */
6414: htmlStatus
6415: htmlElementStatusHere(const htmlElemDesc* parent, const htmlElemDesc* elt) {
6416: if ( ! parent || ! elt )
6417: return HTML_INVALID ;
6418: if ( ! htmlElementAllowedHere(parent, (const xmlChar*) elt->name ) )
6419: return HTML_INVALID ;
6420:
6421: return ( elt->dtd == 0 ) ? HTML_VALID : HTML_DEPRECATED ;
6422: }
6423: /**
6424: * htmlAttrAllowed:
6425: * @elt: HTML element
6426: * @attr: HTML attribute
6427: * @legacy: whether to allow deprecated attributes
6428: *
6429: * Checks whether an attribute is valid for an element
6430: * Has full knowledge of Required and Deprecated attributes
6431: *
6432: * Returns one of HTML_REQUIRED, HTML_VALID, HTML_DEPRECATED, HTML_INVALID
6433: */
6434: htmlStatus
6435: htmlAttrAllowed(const htmlElemDesc* elt, const xmlChar* attr, int legacy) {
6436: const char** p ;
6437:
6438: if ( !elt || ! attr )
6439: return HTML_INVALID ;
6440:
6441: if ( elt->attrs_req )
6442: for ( p = elt->attrs_req; *p; ++p)
6443: if ( !xmlStrcmp((const xmlChar*)*p, attr) )
6444: return HTML_REQUIRED ;
6445:
6446: if ( elt->attrs_opt )
6447: for ( p = elt->attrs_opt; *p; ++p)
6448: if ( !xmlStrcmp((const xmlChar*)*p, attr) )
6449: return HTML_VALID ;
6450:
6451: if ( legacy && elt->attrs_depr )
6452: for ( p = elt->attrs_depr; *p; ++p)
6453: if ( !xmlStrcmp((const xmlChar*)*p, attr) )
6454: return HTML_DEPRECATED ;
6455:
6456: return HTML_INVALID ;
6457: }
6458: /**
6459: * htmlNodeStatus:
6460: * @node: an htmlNodePtr in a tree
6461: * @legacy: whether to allow deprecated elements (YES is faster here
6462: * for Element nodes)
6463: *
6464: * Checks whether the tree node is valid. Experimental (the author
6465: * only uses the HTML enhancements in a SAX parser)
6466: *
6467: * Return: for Element nodes, a return from htmlElementAllowedHere (if
6468: * legacy allowed) or htmlElementStatusHere (otherwise).
6469: * for Attribute nodes, a return from htmlAttrAllowed
6470: * for other nodes, HTML_NA (no checks performed)
6471: */
6472: htmlStatus
6473: htmlNodeStatus(const htmlNodePtr node, int legacy) {
6474: if ( ! node )
6475: return HTML_INVALID ;
6476:
6477: switch ( node->type ) {
6478: case XML_ELEMENT_NODE:
6479: return legacy
6480: ? ( htmlElementAllowedHere (
6481: htmlTagLookup(node->parent->name) , node->name
6482: ) ? HTML_VALID : HTML_INVALID )
6483: : htmlElementStatusHere(
6484: htmlTagLookup(node->parent->name) ,
6485: htmlTagLookup(node->name) )
6486: ;
6487: case XML_ATTRIBUTE_NODE:
6488: return htmlAttrAllowed(
6489: htmlTagLookup(node->parent->name) , node->name, legacy) ;
6490: default: return HTML_NA ;
6491: }
6492: }
6493: /************************************************************************
6494: * *
6495: * New set (2.6.0) of simpler and more flexible APIs *
6496: * *
6497: ************************************************************************/
6498: /**
6499: * DICT_FREE:
6500: * @str: a string
6501: *
6502: * Free a string if it is not owned by the "dict" dictionnary in the
6503: * current scope
6504: */
6505: #define DICT_FREE(str) \
6506: if ((str) && ((!dict) || \
6507: (xmlDictOwns(dict, (const xmlChar *)(str)) == 0))) \
6508: xmlFree((char *)(str));
6509:
6510: /**
6511: * htmlCtxtReset:
6512: * @ctxt: an HTML parser context
6513: *
6514: * Reset a parser context
6515: */
6516: void
6517: htmlCtxtReset(htmlParserCtxtPtr ctxt)
6518: {
6519: xmlParserInputPtr input;
6520: xmlDictPtr dict;
6521:
6522: if (ctxt == NULL)
6523: return;
6524:
6525: xmlInitParser();
6526: dict = ctxt->dict;
6527:
6528: while ((input = inputPop(ctxt)) != NULL) { /* Non consuming */
6529: xmlFreeInputStream(input);
6530: }
6531: ctxt->inputNr = 0;
6532: ctxt->input = NULL;
6533:
6534: ctxt->spaceNr = 0;
6535: if (ctxt->spaceTab != NULL) {
6536: ctxt->spaceTab[0] = -1;
6537: ctxt->space = &ctxt->spaceTab[0];
6538: } else {
6539: ctxt->space = NULL;
6540: }
6541:
6542:
6543: ctxt->nodeNr = 0;
6544: ctxt->node = NULL;
6545:
6546: ctxt->nameNr = 0;
6547: ctxt->name = NULL;
6548:
6549: DICT_FREE(ctxt->version);
6550: ctxt->version = NULL;
6551: DICT_FREE(ctxt->encoding);
6552: ctxt->encoding = NULL;
6553: DICT_FREE(ctxt->directory);
6554: ctxt->directory = NULL;
6555: DICT_FREE(ctxt->extSubURI);
6556: ctxt->extSubURI = NULL;
6557: DICT_FREE(ctxt->extSubSystem);
6558: ctxt->extSubSystem = NULL;
6559: if (ctxt->myDoc != NULL)
6560: xmlFreeDoc(ctxt->myDoc);
6561: ctxt->myDoc = NULL;
6562:
6563: ctxt->standalone = -1;
6564: ctxt->hasExternalSubset = 0;
6565: ctxt->hasPErefs = 0;
6566: ctxt->html = 1;
6567: ctxt->external = 0;
6568: ctxt->instate = XML_PARSER_START;
6569: ctxt->token = 0;
6570:
6571: ctxt->wellFormed = 1;
6572: ctxt->nsWellFormed = 1;
6573: ctxt->disableSAX = 0;
6574: ctxt->valid = 1;
6575: ctxt->vctxt.userData = ctxt;
6576: ctxt->vctxt.error = xmlParserValidityError;
6577: ctxt->vctxt.warning = xmlParserValidityWarning;
6578: ctxt->record_info = 0;
6579: ctxt->nbChars = 0;
6580: ctxt->checkIndex = 0;
6581: ctxt->inSubset = 0;
6582: ctxt->errNo = XML_ERR_OK;
6583: ctxt->depth = 0;
6584: ctxt->charset = XML_CHAR_ENCODING_NONE;
6585: ctxt->catalogs = NULL;
6586: xmlInitNodeInfoSeq(&ctxt->node_seq);
6587:
6588: if (ctxt->attsDefault != NULL) {
6589: xmlHashFree(ctxt->attsDefault, (xmlHashDeallocator) xmlFree);
6590: ctxt->attsDefault = NULL;
6591: }
6592: if (ctxt->attsSpecial != NULL) {
6593: xmlHashFree(ctxt->attsSpecial, NULL);
6594: ctxt->attsSpecial = NULL;
6595: }
6596: }
6597:
6598: /**
6599: * htmlCtxtUseOptions:
6600: * @ctxt: an HTML parser context
6601: * @options: a combination of htmlParserOption(s)
6602: *
6603: * Applies the options to the parser context
6604: *
6605: * Returns 0 in case of success, the set of unknown or unimplemented options
6606: * in case of error.
6607: */
6608: int
6609: htmlCtxtUseOptions(htmlParserCtxtPtr ctxt, int options)
6610: {
6611: if (ctxt == NULL)
6612: return(-1);
6613:
6614: if (options & HTML_PARSE_NOWARNING) {
6615: ctxt->sax->warning = NULL;
6616: ctxt->vctxt.warning = NULL;
6617: options -= XML_PARSE_NOWARNING;
6618: ctxt->options |= XML_PARSE_NOWARNING;
6619: }
6620: if (options & HTML_PARSE_NOERROR) {
6621: ctxt->sax->error = NULL;
6622: ctxt->vctxt.error = NULL;
6623: ctxt->sax->fatalError = NULL;
6624: options -= XML_PARSE_NOERROR;
6625: ctxt->options |= XML_PARSE_NOERROR;
6626: }
6627: if (options & HTML_PARSE_PEDANTIC) {
6628: ctxt->pedantic = 1;
6629: options -= XML_PARSE_PEDANTIC;
6630: ctxt->options |= XML_PARSE_PEDANTIC;
6631: } else
6632: ctxt->pedantic = 0;
6633: if (options & XML_PARSE_NOBLANKS) {
6634: ctxt->keepBlanks = 0;
6635: ctxt->sax->ignorableWhitespace = xmlSAX2IgnorableWhitespace;
6636: options -= XML_PARSE_NOBLANKS;
6637: ctxt->options |= XML_PARSE_NOBLANKS;
6638: } else
6639: ctxt->keepBlanks = 1;
6640: if (options & HTML_PARSE_RECOVER) {
6641: ctxt->recovery = 1;
6642: options -= HTML_PARSE_RECOVER;
6643: } else
6644: ctxt->recovery = 0;
6645: if (options & HTML_PARSE_COMPACT) {
6646: ctxt->options |= HTML_PARSE_COMPACT;
6647: options -= HTML_PARSE_COMPACT;
6648: }
6649: if (options & XML_PARSE_HUGE) {
6650: ctxt->options |= XML_PARSE_HUGE;
6651: options -= XML_PARSE_HUGE;
6652: }
6653: if (options & HTML_PARSE_NODEFDTD) {
6654: ctxt->options |= HTML_PARSE_NODEFDTD;
6655: options -= HTML_PARSE_NODEFDTD;
6656: }
6657: if (options & HTML_PARSE_IGNORE_ENC) {
6658: ctxt->options |= HTML_PARSE_IGNORE_ENC;
6659: options -= HTML_PARSE_IGNORE_ENC;
6660: }
6661: if (options & HTML_PARSE_NOIMPLIED) {
6662: ctxt->options |= HTML_PARSE_NOIMPLIED;
6663: options -= HTML_PARSE_NOIMPLIED;
6664: }
6665: ctxt->dictNames = 0;
6666: return (options);
6667: }
6668:
6669: /**
6670: * htmlDoRead:
6671: * @ctxt: an HTML parser context
6672: * @URL: the base URL to use for the document
6673: * @encoding: the document encoding, or NULL
6674: * @options: a combination of htmlParserOption(s)
6675: * @reuse: keep the context for reuse
6676: *
6677: * Common front-end for the htmlRead functions
6678: *
6679: * Returns the resulting document tree or NULL
6680: */
6681: static htmlDocPtr
6682: htmlDoRead(htmlParserCtxtPtr ctxt, const char *URL, const char *encoding,
6683: int options, int reuse)
6684: {
6685: htmlDocPtr ret;
6686:
6687: htmlCtxtUseOptions(ctxt, options);
6688: ctxt->html = 1;
6689: if (encoding != NULL) {
6690: xmlCharEncodingHandlerPtr hdlr;
6691:
6692: hdlr = xmlFindCharEncodingHandler(encoding);
6693: if (hdlr != NULL) {
6694: xmlSwitchToEncoding(ctxt, hdlr);
6695: if (ctxt->input->encoding != NULL)
6696: xmlFree((xmlChar *) ctxt->input->encoding);
6697: ctxt->input->encoding = xmlStrdup((xmlChar *)encoding);
6698: }
6699: }
6700: if ((URL != NULL) && (ctxt->input != NULL) &&
6701: (ctxt->input->filename == NULL))
6702: ctxt->input->filename = (char *) xmlStrdup((const xmlChar *) URL);
6703: htmlParseDocument(ctxt);
6704: ret = ctxt->myDoc;
6705: ctxt->myDoc = NULL;
6706: if (!reuse) {
6707: if ((ctxt->dictNames) &&
6708: (ret != NULL) &&
6709: (ret->dict == ctxt->dict))
6710: ctxt->dict = NULL;
6711: xmlFreeParserCtxt(ctxt);
6712: }
6713: return (ret);
6714: }
6715:
6716: /**
6717: * htmlReadDoc:
6718: * @cur: a pointer to a zero terminated string
6719: * @URL: the base URL to use for the document
6720: * @encoding: the document encoding, or NULL
6721: * @options: a combination of htmlParserOption(s)
6722: *
6723: * parse an XML in-memory document and build a tree.
6724: *
6725: * Returns the resulting document tree
6726: */
6727: htmlDocPtr
6728: htmlReadDoc(const xmlChar * cur, const char *URL, const char *encoding, int options)
6729: {
6730: htmlParserCtxtPtr ctxt;
6731:
6732: if (cur == NULL)
6733: return (NULL);
6734:
6735: xmlInitParser();
6736: ctxt = htmlCreateDocParserCtxt(cur, NULL);
6737: if (ctxt == NULL)
6738: return (NULL);
6739: return (htmlDoRead(ctxt, URL, encoding, options, 0));
6740: }
6741:
6742: /**
6743: * htmlReadFile:
6744: * @filename: a file or URL
6745: * @encoding: the document encoding, or NULL
6746: * @options: a combination of htmlParserOption(s)
6747: *
6748: * parse an XML file from the filesystem or the network.
6749: *
6750: * Returns the resulting document tree
6751: */
6752: htmlDocPtr
6753: htmlReadFile(const char *filename, const char *encoding, int options)
6754: {
6755: htmlParserCtxtPtr ctxt;
6756:
6757: xmlInitParser();
6758: ctxt = htmlCreateFileParserCtxt(filename, encoding);
6759: if (ctxt == NULL)
6760: return (NULL);
6761: return (htmlDoRead(ctxt, NULL, NULL, options, 0));
6762: }
6763:
6764: /**
6765: * htmlReadMemory:
6766: * @buffer: a pointer to a char array
6767: * @size: the size of the array
6768: * @URL: the base URL to use for the document
6769: * @encoding: the document encoding, or NULL
6770: * @options: a combination of htmlParserOption(s)
6771: *
6772: * parse an XML in-memory document and build a tree.
6773: *
6774: * Returns the resulting document tree
6775: */
6776: htmlDocPtr
6777: htmlReadMemory(const char *buffer, int size, const char *URL, const char *encoding, int options)
6778: {
6779: htmlParserCtxtPtr ctxt;
6780:
6781: xmlInitParser();
6782: ctxt = xmlCreateMemoryParserCtxt(buffer, size);
6783: if (ctxt == NULL)
6784: return (NULL);
6785: htmlDefaultSAXHandlerInit();
6786: if (ctxt->sax != NULL)
6787: memcpy(ctxt->sax, &htmlDefaultSAXHandler, sizeof(xmlSAXHandlerV1));
6788: return (htmlDoRead(ctxt, URL, encoding, options, 0));
6789: }
6790:
6791: /**
6792: * htmlReadFd:
6793: * @fd: an open file descriptor
6794: * @URL: the base URL to use for the document
6795: * @encoding: the document encoding, or NULL
6796: * @options: a combination of htmlParserOption(s)
6797: *
6798: * parse an XML from a file descriptor and build a tree.
6799: *
6800: * Returns the resulting document tree
6801: */
6802: htmlDocPtr
6803: htmlReadFd(int fd, const char *URL, const char *encoding, int options)
6804: {
6805: htmlParserCtxtPtr ctxt;
6806: xmlParserInputBufferPtr input;
6807: xmlParserInputPtr stream;
6808:
6809: if (fd < 0)
6810: return (NULL);
6811:
6812: xmlInitParser();
6813: input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE);
6814: if (input == NULL)
6815: return (NULL);
6816: ctxt = xmlNewParserCtxt();
6817: if (ctxt == NULL) {
6818: xmlFreeParserInputBuffer(input);
6819: return (NULL);
6820: }
6821: stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
6822: if (stream == NULL) {
6823: xmlFreeParserInputBuffer(input);
6824: xmlFreeParserCtxt(ctxt);
6825: return (NULL);
6826: }
6827: inputPush(ctxt, stream);
6828: return (htmlDoRead(ctxt, URL, encoding, options, 0));
6829: }
6830:
6831: /**
6832: * htmlReadIO:
6833: * @ioread: an I/O read function
6834: * @ioclose: an I/O close function
6835: * @ioctx: an I/O handler
6836: * @URL: the base URL to use for the document
6837: * @encoding: the document encoding, or NULL
6838: * @options: a combination of htmlParserOption(s)
6839: *
6840: * parse an HTML document from I/O functions and source and build a tree.
6841: *
6842: * Returns the resulting document tree
6843: */
6844: htmlDocPtr
6845: htmlReadIO(xmlInputReadCallback ioread, xmlInputCloseCallback ioclose,
6846: void *ioctx, const char *URL, const char *encoding, int options)
6847: {
6848: htmlParserCtxtPtr ctxt;
6849: xmlParserInputBufferPtr input;
6850: xmlParserInputPtr stream;
6851:
6852: if (ioread == NULL)
6853: return (NULL);
6854: xmlInitParser();
6855:
6856: input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
6857: XML_CHAR_ENCODING_NONE);
6858: if (input == NULL) {
6859: if (ioclose != NULL)
6860: ioclose(ioctx);
6861: return (NULL);
6862: }
6863: ctxt = htmlNewParserCtxt();
6864: if (ctxt == NULL) {
6865: xmlFreeParserInputBuffer(input);
6866: return (NULL);
6867: }
6868: stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
6869: if (stream == NULL) {
6870: xmlFreeParserInputBuffer(input);
6871: xmlFreeParserCtxt(ctxt);
6872: return (NULL);
6873: }
6874: inputPush(ctxt, stream);
6875: return (htmlDoRead(ctxt, URL, encoding, options, 0));
6876: }
6877:
6878: /**
6879: * htmlCtxtReadDoc:
6880: * @ctxt: an HTML parser context
6881: * @cur: a pointer to a zero terminated string
6882: * @URL: the base URL to use for the document
6883: * @encoding: the document encoding, or NULL
6884: * @options: a combination of htmlParserOption(s)
6885: *
6886: * parse an XML in-memory document and build a tree.
6887: * This reuses the existing @ctxt parser context
6888: *
6889: * Returns the resulting document tree
6890: */
6891: htmlDocPtr
6892: htmlCtxtReadDoc(htmlParserCtxtPtr ctxt, const xmlChar * cur,
6893: const char *URL, const char *encoding, int options)
6894: {
6895: xmlParserInputPtr stream;
6896:
6897: if (cur == NULL)
6898: return (NULL);
6899: if (ctxt == NULL)
6900: return (NULL);
6901:
6902: htmlCtxtReset(ctxt);
6903:
6904: stream = xmlNewStringInputStream(ctxt, cur);
6905: if (stream == NULL) {
6906: return (NULL);
6907: }
6908: inputPush(ctxt, stream);
6909: return (htmlDoRead(ctxt, URL, encoding, options, 1));
6910: }
6911:
6912: /**
6913: * htmlCtxtReadFile:
6914: * @ctxt: an HTML parser context
6915: * @filename: a file or URL
6916: * @encoding: the document encoding, or NULL
6917: * @options: a combination of htmlParserOption(s)
6918: *
6919: * parse an XML file from the filesystem or the network.
6920: * This reuses the existing @ctxt parser context
6921: *
6922: * Returns the resulting document tree
6923: */
6924: htmlDocPtr
6925: htmlCtxtReadFile(htmlParserCtxtPtr ctxt, const char *filename,
6926: const char *encoding, int options)
6927: {
6928: xmlParserInputPtr stream;
6929:
6930: if (filename == NULL)
6931: return (NULL);
6932: if (ctxt == NULL)
6933: return (NULL);
6934:
6935: htmlCtxtReset(ctxt);
6936:
6937: stream = xmlLoadExternalEntity(filename, NULL, ctxt);
6938: if (stream == NULL) {
6939: return (NULL);
6940: }
6941: inputPush(ctxt, stream);
6942: return (htmlDoRead(ctxt, NULL, encoding, options, 1));
6943: }
6944:
6945: /**
6946: * htmlCtxtReadMemory:
6947: * @ctxt: an HTML parser context
6948: * @buffer: a pointer to a char array
6949: * @size: the size of the array
6950: * @URL: the base URL to use for the document
6951: * @encoding: the document encoding, or NULL
6952: * @options: a combination of htmlParserOption(s)
6953: *
6954: * parse an XML in-memory document and build a tree.
6955: * This reuses the existing @ctxt parser context
6956: *
6957: * Returns the resulting document tree
6958: */
6959: htmlDocPtr
6960: htmlCtxtReadMemory(htmlParserCtxtPtr ctxt, const char *buffer, int size,
6961: const char *URL, const char *encoding, int options)
6962: {
6963: xmlParserInputBufferPtr input;
6964: xmlParserInputPtr stream;
6965:
6966: if (ctxt == NULL)
6967: return (NULL);
6968: if (buffer == NULL)
6969: return (NULL);
6970:
6971: htmlCtxtReset(ctxt);
6972:
6973: input = xmlParserInputBufferCreateMem(buffer, size, XML_CHAR_ENCODING_NONE);
6974: if (input == NULL) {
6975: return(NULL);
6976: }
6977:
6978: stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
6979: if (stream == NULL) {
6980: xmlFreeParserInputBuffer(input);
6981: return(NULL);
6982: }
6983:
6984: inputPush(ctxt, stream);
6985: return (htmlDoRead(ctxt, URL, encoding, options, 1));
6986: }
6987:
6988: /**
6989: * htmlCtxtReadFd:
6990: * @ctxt: an HTML parser context
6991: * @fd: an open file descriptor
6992: * @URL: the base URL to use for the document
6993: * @encoding: the document encoding, or NULL
6994: * @options: a combination of htmlParserOption(s)
6995: *
6996: * parse an XML from a file descriptor and build a tree.
6997: * This reuses the existing @ctxt parser context
6998: *
6999: * Returns the resulting document tree
7000: */
7001: htmlDocPtr
7002: htmlCtxtReadFd(htmlParserCtxtPtr ctxt, int fd,
7003: const char *URL, const char *encoding, int options)
7004: {
7005: xmlParserInputBufferPtr input;
7006: xmlParserInputPtr stream;
7007:
7008: if (fd < 0)
7009: return (NULL);
7010: if (ctxt == NULL)
7011: return (NULL);
7012:
7013: htmlCtxtReset(ctxt);
7014:
7015:
7016: input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE);
7017: if (input == NULL)
7018: return (NULL);
7019: stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
7020: if (stream == NULL) {
7021: xmlFreeParserInputBuffer(input);
7022: return (NULL);
7023: }
7024: inputPush(ctxt, stream);
7025: return (htmlDoRead(ctxt, URL, encoding, options, 1));
7026: }
7027:
7028: /**
7029: * htmlCtxtReadIO:
7030: * @ctxt: an HTML parser context
7031: * @ioread: an I/O read function
7032: * @ioclose: an I/O close function
7033: * @ioctx: an I/O handler
7034: * @URL: the base URL to use for the document
7035: * @encoding: the document encoding, or NULL
7036: * @options: a combination of htmlParserOption(s)
7037: *
7038: * parse an HTML document from I/O functions and source and build a tree.
7039: * This reuses the existing @ctxt parser context
7040: *
7041: * Returns the resulting document tree
7042: */
7043: htmlDocPtr
7044: htmlCtxtReadIO(htmlParserCtxtPtr ctxt, xmlInputReadCallback ioread,
7045: xmlInputCloseCallback ioclose, void *ioctx,
7046: const char *URL,
7047: const char *encoding, int options)
7048: {
7049: xmlParserInputBufferPtr input;
7050: xmlParserInputPtr stream;
7051:
7052: if (ioread == NULL)
7053: return (NULL);
7054: if (ctxt == NULL)
7055: return (NULL);
7056:
7057: htmlCtxtReset(ctxt);
7058:
7059: input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
7060: XML_CHAR_ENCODING_NONE);
7061: if (input == NULL) {
7062: if (ioclose != NULL)
7063: ioclose(ioctx);
7064: return (NULL);
7065: }
7066: stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
7067: if (stream == NULL) {
7068: xmlFreeParserInputBuffer(input);
7069: return (NULL);
7070: }
7071: inputPush(ctxt, stream);
7072: return (htmlDoRead(ctxt, URL, encoding, options, 1));
7073: }
7074:
7075: #define bottom_HTMLparser
7076: #include "elfgcchack.h"
7077: #endif /* LIBXML_HTML_ENABLED */
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to HTMLparser.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / libxml2