Annotation of XML/HTMLparser.c, revision 1.58
1.1 daniel 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@w3.org
7: */
8:
9: #ifdef WIN32
1.29 daniel 10: #include "win32config.h"
1.1 daniel 11: #else
1.13 daniel 12: #include "config.h"
1.1 daniel 13: #endif
1.13 daniel 14:
1.39 daniel 15: #include "xmlversion.h"
16: #ifdef LIBXML_HTML_ENABLED
17:
1.1 daniel 18: #include <stdio.h>
1.50 veillard 19: #include <string.h>
1.13 daniel 20: #ifdef HAVE_CTYPE_H
1.1 daniel 21: #include <ctype.h>
1.13 daniel 22: #endif
23: #ifdef HAVE_STDLIB_H
1.1 daniel 24: #include <stdlib.h>
1.13 daniel 25: #endif
26: #ifdef HAVE_SYS_STAT_H
1.1 daniel 27: #include <sys/stat.h>
1.13 daniel 28: #endif
1.1 daniel 29: #ifdef HAVE_FCNTL_H
30: #include <fcntl.h>
31: #endif
32: #ifdef HAVE_UNISTD_H
33: #include <unistd.h>
34: #endif
35: #ifdef HAVE_ZLIB_H
36: #include <zlib.h>
37: #endif
38:
1.39 daniel 39: #include <libxml/xmlmemory.h>
40: #include <libxml/tree.h>
41: #include <libxml/HTMLparser.h>
42: #include <libxml/entities.h>
43: #include <libxml/encoding.h>
1.50 veillard 44: #include <libxml/parser.h>
1.39 daniel 45: #include <libxml/valid.h>
46: #include <libxml/parserInternals.h>
47: #include <libxml/xmlIO.h>
1.31 daniel 48: #include "xml-error.h"
1.5 daniel 49:
50: #define HTML_MAX_NAMELEN 1000
51: #define INPUT_CHUNK 50
1.53 veillard 52: #define HTML_PARSER_BIG_BUFFER_SIZE 1000
1.31 daniel 53: #define HTML_PARSER_BUFFER_SIZE 100
1.1 daniel 54:
55: /* #define DEBUG */
1.31 daniel 56: /* #define DEBUG_PUSH */
1.1 daniel 57:
58: /************************************************************************
59: * *
60: * Parser stacks related functions and macros *
61: * *
62: ************************************************************************/
63:
64: /*
65: * Generic function for accessing stacks in the Parser Context
66: */
67:
1.30 daniel 68: #define PUSH_AND_POP(scope, type, name) \
69: scope int html##name##Push(htmlParserCtxtPtr ctxt, type value) { \
1.1 daniel 70: if (ctxt->name##Nr >= ctxt->name##Max) { \
71: ctxt->name##Max *= 2; \
1.50 veillard 72: ctxt->name##Tab = (type *) xmlRealloc(ctxt->name##Tab, \
1.1 daniel 73: ctxt->name##Max * sizeof(ctxt->name##Tab[0])); \
74: if (ctxt->name##Tab == NULL) { \
75: fprintf(stderr, "realloc failed !\n"); \
1.33 daniel 76: return(0); \
1.1 daniel 77: } \
78: } \
79: ctxt->name##Tab[ctxt->name##Nr] = value; \
80: ctxt->name = value; \
81: return(ctxt->name##Nr++); \
82: } \
1.30 daniel 83: scope type html##name##Pop(htmlParserCtxtPtr ctxt) { \
1.1 daniel 84: type ret; \
1.18 daniel 85: if (ctxt->name##Nr < 0) return(0); \
1.1 daniel 86: ctxt->name##Nr--; \
1.18 daniel 87: if (ctxt->name##Nr < 0) return(0); \
1.1 daniel 88: if (ctxt->name##Nr > 0) \
89: ctxt->name = ctxt->name##Tab[ctxt->name##Nr - 1]; \
90: else \
91: ctxt->name = NULL; \
92: ret = ctxt->name##Tab[ctxt->name##Nr]; \
93: ctxt->name##Tab[ctxt->name##Nr] = 0; \
94: return(ret); \
95: } \
96:
1.30 daniel 97: PUSH_AND_POP(extern, xmlNodePtr, node)
98: PUSH_AND_POP(extern, xmlChar*, name)
1.1 daniel 99:
100: /*
101: * Macros for accessing the content. Those should be used only by the parser,
102: * and not exported.
103: *
104: * Dirty macros, i.e. one need to make assumption on the context to use them
105: *
1.14 daniel 106: * CUR_PTR return the current pointer to the xmlChar to be parsed.
107: * CUR returns the current xmlChar value, i.e. a 8 bit value if compiled
1.1 daniel 108: * in ISO-Latin or UTF-8, and the current 16 bit value if compiled
109: * in UNICODE mode. This should be used internally by the parser
110: * only to compare to ASCII values otherwise it would break when
111: * running with UTF-8 encoding.
1.14 daniel 112: * NXT(n) returns the n'th next xmlChar. Same as CUR is should be used only
1.1 daniel 113: * to compare on ASCII based substring.
1.14 daniel 114: * UPP(n) returns the n'th next xmlChar converted to uppercase. Same as CUR
1.1 daniel 115: * it should be used only to compare on ASCII based substring.
1.14 daniel 116: * SKIP(n) Skip n xmlChar, and must also be used only to skip ASCII defined
1.1 daniel 117: * strings within the parser.
118: *
119: * Clean macros, not dependent of an ASCII context, expect UTF-8 encoding
120: *
121: * CURRENT Returns the current char value, with the full decoding of
122: * UTF-8 if we are using this mode. It returns an int.
123: * NEXT Skip to the next character, this does the proper decoding
124: * in UTF-8 mode. It also pop-up unfinished entities on the fly.
125: * COPY(to) copy one char to *to, increment CUR_PTR and to accordingly
126: */
127:
128: #define UPPER (toupper(*ctxt->input->cur))
1.36 daniel 129:
1.26 daniel 130: #define SKIP(val) ctxt->nbChars += (val),ctxt->input->cur += (val)
1.36 daniel 131:
1.1 daniel 132: #define NXT(val) ctxt->input->cur[(val)]
1.36 daniel 133:
1.1 daniel 134: #define UPP(val) (toupper(ctxt->input->cur[(val)]))
1.36 daniel 135:
1.1 daniel 136: #define CUR_PTR ctxt->input->cur
1.36 daniel 137:
1.5 daniel 138: #define SHRINK xmlParserInputShrink(ctxt->input)
1.36 daniel 139:
1.5 daniel 140: #define GROW xmlParserInputGrow(ctxt->input, INPUT_CHUNK)
1.1 daniel 141:
1.36 daniel 142: #define CURRENT ((int) (*ctxt->input->cur))
1.1 daniel 143:
1.53 veillard 144: #define SKIP_BLANKS htmlSkipBlankChars(ctxt);
145:
146: #if 0
147: #define CUR ((int) (*ctxt->input->cur))
1.36 daniel 148: #define NEXT htmlNextChar(ctxt);
1.53 veillard 149: #else
150: /* Inported from XML */
151:
152: /* #define CUR (ctxt->token ? ctxt->token : (int) (*ctxt->input->cur)) */
153: #define CUR ((int) (*ctxt->input->cur))
154: #define NEXT xmlNextChar(ctxt);ctxt->nbChars++;
155:
156: #define RAW (ctxt->token ? -1 : (*ctxt->input->cur))
157: #define NXT(val) ctxt->input->cur[(val)]
158: #define CUR_PTR ctxt->input->cur
159:
160:
161: #define NEXTL(l) \
162: if (*(ctxt->input->cur) == '\n') { \
163: ctxt->input->line++; ctxt->input->col = 1; \
164: } else ctxt->input->col++; \
165: ctxt->token = 0; ctxt->input->cur += l; ctxt->nbChars++;
166:
167: /************
168: \
169: if (*ctxt->input->cur == '%') xmlParserHandlePEReference(ctxt); \
170: if (*ctxt->input->cur == '&') xmlParserHandleReference(ctxt);
171: ************/
172:
173: #define CUR_CHAR(l) htmlCurrentChar(ctxt, &l);
174: #define CUR_SCHAR(s, l) xmlStringCurrentChar(ctxt, s, &l);
175:
176: #define COPY_BUF(l,b,i,v) \
177: if (l == 1) b[i++] = (xmlChar) v; \
178: else i += xmlCopyChar(l,&b[i],v);
179: #endif
180:
181: /**
182: * htmlCurrentChar:
183: * @ctxt: the HTML parser context
184: * @len: pointer to the length of the char read
185: *
186: * The current char value, if using UTF-8 this may actaully span multiple
187: * bytes in the input buffer. Implement the end of line normalization:
188: * 2.11 End-of-Line Handling
189: * If the encoding is unspecified, in the case we find an ISO-Latin-1
190: * char, then the encoding converter is plugged in automatically.
191: *
192: * Returns the current char value and its lenght
193: */
194:
195: int
196: htmlCurrentChar(xmlParserCtxtPtr ctxt, int *len) {
197: if (ctxt->instate == XML_PARSER_EOF)
198: return(0);
1.35 daniel 199:
1.53 veillard 200: if (ctxt->token != 0) {
201: *len = 0;
202: return(ctxt->token);
203: }
204: if (ctxt->charset == XML_CHAR_ENCODING_UTF8) {
205: /*
206: * We are supposed to handle UTF8, check it's valid
207: * From rfc2044: encoding of the Unicode values on UTF-8:
208: *
209: * UCS-4 range (hex.) UTF-8 octet sequence (binary)
210: * 0000 0000-0000 007F 0xxxxxxx
211: * 0000 0080-0000 07FF 110xxxxx 10xxxxxx
212: * 0000 0800-0000 FFFF 1110xxxx 10xxxxxx 10xxxxxx
213: *
214: * Check for the 0x110000 limit too
215: */
216: const unsigned char *cur = ctxt->input->cur;
217: unsigned char c;
218: unsigned int val;
219:
220: c = *cur;
221: if (c & 0x80) {
222: if (cur[1] == 0)
223: xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
224: if ((cur[1] & 0xc0) != 0x80)
225: goto encoding_error;
226: if ((c & 0xe0) == 0xe0) {
227:
228: if (cur[2] == 0)
229: xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
230: if ((cur[2] & 0xc0) != 0x80)
231: goto encoding_error;
232: if ((c & 0xf0) == 0xf0) {
233: if (cur[3] == 0)
234: xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
235: if (((c & 0xf8) != 0xf0) ||
236: ((cur[3] & 0xc0) != 0x80))
237: goto encoding_error;
238: /* 4-byte code */
239: *len = 4;
240: val = (cur[0] & 0x7) << 18;
241: val |= (cur[1] & 0x3f) << 12;
242: val |= (cur[2] & 0x3f) << 6;
243: val |= cur[3] & 0x3f;
244: } else {
245: /* 3-byte code */
246: *len = 3;
247: val = (cur[0] & 0xf) << 12;
248: val |= (cur[1] & 0x3f) << 6;
249: val |= cur[2] & 0x3f;
250: }
251: } else {
252: /* 2-byte code */
253: *len = 2;
254: val = (cur[0] & 0x1f) << 6;
255: val |= cur[1] & 0x3f;
256: }
257: if (!IS_CHAR(val)) {
258: if ((ctxt->sax != NULL) &&
259: (ctxt->sax->error != NULL))
260: ctxt->sax->error(ctxt->userData,
261: "Char 0x%X out of allowed range\n", val);
262: ctxt->errNo = XML_ERR_INVALID_ENCODING;
263: ctxt->wellFormed = 0;
264: ctxt->disableSAX = 1;
265: }
266: return(val);
267: } else {
268: /* 1-byte code */
269: *len = 1;
270: return((int) *ctxt->input->cur);
271: }
272: }
273: /*
274: * Assume it's a fixed lenght encoding (1) with
275: * a compatibke encoding for the ASCII set, since
276: * XML constructs only use < 128 chars
277: */
278: *len = 1;
279: if ((int) *ctxt->input->cur < 0x80)
280: return((int) *ctxt->input->cur);
281:
282: /*
283: * Humm this is bad, do an automatic flow conversion
284: */
285: xmlSwitchEncoding(ctxt, XML_CHAR_ENCODING_8859_1);
286: ctxt->charset = XML_CHAR_ENCODING_UTF8;
287: return(xmlCurrentChar(ctxt, len));
288:
289: encoding_error:
290: /*
291: * If we detect an UTF8 error that probably mean that the
292: * input encoding didn't get properly advertized in the
293: * declaration header. Report the error and switch the encoding
294: * to ISO-Latin-1 (if you don't like this policy, just declare the
295: * encoding !)
296: */
297: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) {
298: ctxt->sax->error(ctxt->userData,
299: "Input is not proper UTF-8, indicate encoding !\n");
300: ctxt->sax->error(ctxt->userData, "Bytes: 0x%02X 0x%02X 0x%02X 0x%02X\n",
301: ctxt->input->cur[0], ctxt->input->cur[1],
302: ctxt->input->cur[2], ctxt->input->cur[3]);
303: }
304: ctxt->errNo = XML_ERR_INVALID_ENCODING;
305:
306: ctxt->charset = XML_CHAR_ENCODING_8859_1;
307: *len = 1;
308: return((int) *ctxt->input->cur);
309: }
1.35 daniel 310:
311: /**
312: * htmlNextChar:
313: * @ctxt: the HTML parser context
314: *
315: * Skip to the next char input char.
316: */
317:
318: void
319: htmlNextChar(htmlParserCtxtPtr ctxt) {
1.44 daniel 320: if (ctxt->instate == XML_PARSER_EOF)
321: return;
1.35 daniel 322: if ((*ctxt->input->cur == 0) &&
323: (xmlParserInputGrow(ctxt->input, INPUT_CHUNK) <= 0)) {
324: xmlPopInput(ctxt);
325: } else {
326: if (*(ctxt->input->cur) == '\n') {
327: ctxt->input->line++; ctxt->input->col = 1;
328: } else ctxt->input->col++;
329: ctxt->input->cur++;
330: ctxt->nbChars++;
331: if (*ctxt->input->cur == 0)
332: xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
333: }
334: }
1.5 daniel 335:
1.36 daniel 336: /**
337: * htmlSkipBlankChars:
338: * @ctxt: the HTML parser context
339: *
340: * skip all blanks character found at that point in the input streams.
341: *
342: * Returns the number of space chars skipped
343: */
344:
345: int
346: htmlSkipBlankChars(xmlParserCtxtPtr ctxt) {
347: int res = 0;
348:
349: while (IS_BLANK(*(ctxt->input->cur))) {
350: if ((*ctxt->input->cur == 0) &&
351: (xmlParserInputGrow(ctxt->input, INPUT_CHUNK) <= 0)) {
352: xmlPopInput(ctxt);
353: } else {
354: if (*(ctxt->input->cur) == '\n') {
355: ctxt->input->line++; ctxt->input->col = 1;
356: } else ctxt->input->col++;
357: ctxt->input->cur++;
358: ctxt->nbChars++;
359: if (*ctxt->input->cur == 0)
360: xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
361: }
362: res++;
363: }
364: return(res);
365: }
1.1 daniel 366:
367:
1.5 daniel 368:
1.1 daniel 369: /************************************************************************
370: * *
371: * The list of HTML elements and their properties *
372: * *
373: ************************************************************************/
374:
375: /*
376: * Start Tag: 1 means the start tag can be ommited
377: * End Tag: 1 means the end tag can be ommited
378: * 2 means it's forbidden (empty elements)
379: * Depr: this element is deprecated
380: * DTD: 1 means that this element is valid only in the Loose DTD
381: * 2 means that this element is valid only in the Frameset DTD
382: *
383: * Name,Start Tag,End Tag, Empty, Depr., DTD, Description
384: */
385: htmlElemDesc html40ElementTable[] = {
1.26 daniel 386: { "a", 0, 0, 0, 0, 0, "anchor " },
387: { "abbr", 0, 0, 0, 0, 0, "abbreviated form" },
388: { "acronym", 0, 0, 0, 0, 0, "" },
389: { "address", 0, 0, 0, 0, 0, "information on author " },
390: { "applet", 0, 0, 0, 1, 1, "java applet " },
391: { "area", 0, 2, 1, 0, 0, "client-side image map area " },
392: { "b", 0, 0, 0, 0, 0, "bold text style" },
393: { "base", 0, 2, 1, 0, 0, "document base uri " },
394: { "basefont", 0, 2, 1, 1, 1, "base font size " },
395: { "bdo", 0, 0, 0, 0, 0, "i18n bidi over-ride " },
396: { "big", 0, 0, 0, 0, 0, "large text style" },
397: { "blockquote", 0, 0, 0, 0, 0, "long quotation " },
398: { "body", 1, 1, 0, 0, 0, "document body " },
399: { "br", 0, 2, 1, 0, 0, "forced line break " },
400: { "button", 0, 0, 0, 0, 0, "push button " },
401: { "caption", 0, 0, 0, 0, 0, "table caption " },
402: { "center", 0, 0, 0, 1, 1, "shorthand for div align=center " },
403: { "cite", 0, 0, 0, 0, 0, "citation" },
404: { "code", 0, 0, 0, 0, 0, "computer code fragment" },
405: { "col", 0, 2, 1, 0, 0, "table column " },
406: { "colgroup", 0, 1, 0, 0, 0, "table column group " },
407: { "dd", 0, 1, 0, 0, 0, "definition description " },
408: { "del", 0, 0, 0, 0, 0, "deleted text " },
409: { "dfn", 0, 0, 0, 0, 0, "instance definition" },
410: { "dir", 0, 0, 0, 1, 1, "directory list" },
411: { "div", 0, 0, 0, 0, 0, "generic language/style container"},
412: { "dl", 0, 0, 0, 0, 0, "definition list " },
413: { "dt", 0, 1, 0, 0, 0, "definition term " },
414: { "em", 0, 0, 0, 0, 0, "emphasis" },
415: { "fieldset", 0, 0, 0, 0, 0, "form control group " },
416: { "font", 0, 0, 0, 1, 1, "local change to font " },
417: { "form", 0, 0, 0, 0, 0, "interactive form " },
418: { "frame", 0, 2, 1, 0, 2, "subwindow " },
419: { "frameset", 0, 0, 0, 0, 2, "window subdivision" },
420: { "h1", 0, 0, 0, 0, 0, "heading " },
421: { "h2", 0, 0, 0, 0, 0, "heading " },
422: { "h3", 0, 0, 0, 0, 0, "heading " },
423: { "h4", 0, 0, 0, 0, 0, "heading " },
424: { "h5", 0, 0, 0, 0, 0, "heading " },
425: { "h6", 0, 0, 0, 0, 0, "heading " },
426: { "head", 1, 1, 0, 0, 0, "document head " },
427: { "hr", 0, 2, 1, 0, 0, "horizontal rule " },
428: { "html", 1, 1, 0, 0, 0, "document root element " },
429: { "i", 0, 0, 0, 0, 0, "italic text style" },
430: { "iframe", 0, 0, 0, 0, 1, "inline subwindow " },
431: { "img", 0, 2, 1, 0, 0, "embedded image " },
432: { "input", 0, 2, 1, 0, 0, "form control " },
433: { "ins", 0, 0, 0, 0, 0, "inserted text" },
434: { "isindex", 0, 2, 1, 1, 1, "single line prompt " },
435: { "kbd", 0, 0, 0, 0, 0, "text to be entered by the user" },
436: { "label", 0, 0, 0, 0, 0, "form field label text " },
437: { "legend", 0, 0, 0, 0, 0, "fieldset legend " },
438: { "li", 0, 1, 0, 0, 0, "list item " },
439: { "link", 0, 2, 1, 0, 0, "a media-independent link " },
440: { "map", 0, 0, 0, 0, 0, "client-side image map " },
441: { "menu", 0, 0, 0, 1, 1, "menu list " },
442: { "meta", 0, 2, 1, 0, 0, "generic metainformation " },
443: { "noframes", 0, 0, 0, 0, 2, "alternate content container for non frame-based rendering " },
444: { "noscript", 0, 0, 0, 0, 0, "alternate content container for non script-based rendering " },
445: { "object", 0, 0, 0, 0, 0, "generic embedded object " },
446: { "ol", 0, 0, 0, 0, 0, "ordered list " },
447: { "optgroup", 0, 0, 0, 0, 0, "option group " },
448: { "option", 0, 1, 0, 0, 0, "selectable choice " },
449: { "p", 0, 1, 0, 0, 0, "paragraph " },
450: { "param", 0, 2, 1, 0, 0, "named property value " },
451: { "pre", 0, 0, 0, 0, 0, "preformatted text " },
452: { "q", 0, 0, 0, 0, 0, "short inline quotation " },
453: { "s", 0, 0, 0, 1, 1, "strike-through text style" },
454: { "samp", 0, 0, 0, 0, 0, "sample program output, scripts, etc." },
455: { "script", 0, 0, 0, 0, 0, "script statements " },
456: { "select", 0, 0, 0, 0, 0, "option selector " },
457: { "small", 0, 0, 0, 0, 0, "small text style" },
458: { "span", 0, 0, 0, 0, 0, "generic language/style container " },
459: { "strike", 0, 0, 0, 1, 1, "strike-through text" },
460: { "strong", 0, 0, 0, 0, 0, "strong emphasis" },
461: { "style", 0, 0, 0, 0, 0, "style info " },
462: { "sub", 0, 0, 0, 0, 0, "subscript" },
463: { "sup", 0, 0, 0, 0, 0, "superscript " },
464: { "table", 0, 0, 0, 0, 0, " " },
465: { "tbody", 1, 1, 0, 0, 0, "table body " },
466: { "td", 0, 1, 0, 0, 0, "table data cell" },
467: { "textarea", 0, 0, 0, 0, 0, "multi-line text field " },
468: { "tfoot", 0, 1, 0, 0, 0, "table footer " },
469: { "th", 0, 1, 0, 0, 0, "table header cell" },
470: { "thead", 0, 1, 0, 0, 0, "table header " },
471: { "title", 0, 0, 0, 0, 0, "document title " },
472: { "tr", 0, 1, 0, 0, 0, "table row " },
473: { "tt", 0, 0, 0, 0, 0, "teletype or monospaced text style" },
474: { "u", 0, 0, 0, 1, 1, "underlined text style" },
475: { "ul", 0, 0, 0, 0, 0, "unordered list " },
476: { "var", 0, 0, 0, 0, 0, "instance of a variable or program argument" },
1.1 daniel 477: };
478:
479: /*
480: * start tags that imply the end of a current element
481: * any tag of each line implies the end of the current element if the type of
482: * that element is in the same line
483: */
1.8 daniel 484: char *htmlEquEnd[] = {
1.26 daniel 485: "dt", "dd", "li", "option", NULL,
486: "h1", "h2", "h3", "h4", "h5", "h6", NULL,
487: "ol", "menu", "dir", "address", "pre", "listing", "xmp", NULL,
1.1 daniel 488: NULL
489: };
490: /*
491: * acording the HTML DTD, HR should be added to the 2nd line above, as it
492: * is not allowed within a H1, H2, H3, etc. But we should tolerate that case
493: * because many documents contain rules in headings...
494: */
495:
496: /*
497: * start tags that imply the end of current element
498: */
1.8 daniel 499: char *htmlStartClose[] = {
1.26 daniel 500: "form", "form", "p", "hr", "h1", "h2", "h3", "h4", "h5", "h6",
501: "dl", "ul", "ol", "menu", "dir", "address", "pre",
502: "listing", "xmp", "head", NULL,
503: "head", "p", NULL,
504: "title", "p", NULL,
505: "body", "head", "style", "link", "title", "p", NULL,
506: "li", "p", "h1", "h2", "h3", "h4", "h5", "h6", "dl", "address",
507: "pre", "listing", "xmp", "head", "li", NULL,
508: "hr", "p", "head", NULL,
509: "h1", "p", "head", NULL,
510: "h2", "p", "head", NULL,
511: "h3", "p", "head", NULL,
512: "h4", "p", "head", NULL,
513: "h5", "p", "head", NULL,
514: "h6", "p", "head", NULL,
515: "dir", "p", "head", NULL,
516: "address", "p", "head", "ul", NULL,
517: "pre", "p", "head", "ul", NULL,
518: "listing", "p", "head", NULL,
519: "xmp", "p", "head", NULL,
520: "blockquote", "p", "head", NULL,
521: "dl", "p", "dt", "menu", "dir", "address", "pre", "listing",
522: "xmp", "head", NULL,
523: "dt", "p", "menu", "dir", "address", "pre", "listing", "xmp",
524: "head", "dd", NULL,
525: "dd", "p", "menu", "dir", "address", "pre", "listing", "xmp",
526: "head", "dt", NULL,
527: "ul", "p", "head", "ol", "menu", "dir", "address", "pre",
528: "listing", "xmp", NULL,
529: "ol", "p", "head", "ul", NULL,
530: "menu", "p", "head", "ul", NULL,
531: "p", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6", NULL,
532: "div", "p", "head", NULL,
533: "noscript", "p", "head", NULL,
534: "center", "font", "b", "i", "p", "head", NULL,
535: "a", "a", NULL,
536: "caption", "p", NULL,
537: "colgroup", "caption", "colgroup", "col", "p", NULL,
538: "col", "caption", "col", "p", NULL,
539: "table", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6", "pre",
540: "listing", "xmp", "a", NULL,
541: "th", "th", "td", NULL,
542: "td", "th", "td", "p", NULL,
543: "tr", "th", "td", "tr", "caption", "col", "colgroup", "p", NULL,
544: "thead", "caption", "col", "colgroup", NULL,
545: "tfoot", "th", "td", "tr", "caption", "col", "colgroup", "thead",
546: "tbody", "p", NULL,
547: "tbody", "th", "td", "tr", "caption", "col", "colgroup", "thead",
548: "tfoot", "tbody", "p", NULL,
549: "optgroup", "option", NULL,
550: "fieldset", "legend", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6",
551: "pre", "listing", "xmp", "a", NULL,
1.1 daniel 552: NULL
553: };
554:
1.43 daniel 555:
1.8 daniel 556: static char** htmlStartCloseIndex[100];
1.1 daniel 557: static int htmlStartCloseIndexinitialized = 0;
558:
559: /************************************************************************
560: * *
561: * functions to handle HTML specific data *
562: * *
563: ************************************************************************/
564:
565: /**
566: * htmlInitAutoClose:
567: *
568: * Initialize the htmlStartCloseIndex for fast lookup of closing tags names.
569: *
570: */
571: void
572: htmlInitAutoClose(void) {
573: int index, i = 0;
574:
575: if (htmlStartCloseIndexinitialized) return;
576:
577: for (index = 0;index < 100;index ++) htmlStartCloseIndex[index] = NULL;
578: index = 0;
579: while ((htmlStartClose[i] != NULL) && (index < 100 - 1)) {
580: htmlStartCloseIndex[index++] = &htmlStartClose[i];
581: while (htmlStartClose[i] != NULL) i++;
582: i++;
583: }
584: }
585:
586: /**
587: * htmlTagLookup:
588: * @tag: The tag name
589: *
590: * Lookup the HTML tag in the ElementTable
591: *
592: * Returns the related htmlElemDescPtr or NULL if not found.
593: */
594: htmlElemDescPtr
1.14 daniel 595: htmlTagLookup(const xmlChar *tag) {
1.1 daniel 596: int i = 0;
597:
598: for (i = 0; i < (sizeof(html40ElementTable) /
599: sizeof(html40ElementTable[0]));i++) {
1.8 daniel 600: if (!xmlStrcmp(tag, BAD_CAST html40ElementTable[i].name))
1.1 daniel 601: return(&html40ElementTable[i]);
602: }
603: return(NULL);
604: }
605:
606: /**
607: * htmlCheckAutoClose:
1.50 veillard 608: * @newtag: The new tag name
609: * @oldtag: The old tag name
1.1 daniel 610: *
611: * Checks wether the new tag is one of the registered valid tags for closing old.
612: * Initialize the htmlStartCloseIndex for fast lookup of closing tags names.
613: *
614: * Returns 0 if no, 1 if yes.
615: */
616: int
1.50 veillard 617: htmlCheckAutoClose(const xmlChar *newtag, const xmlChar *oldtag) {
1.1 daniel 618: int i, index;
1.8 daniel 619: char **close;
1.1 daniel 620:
621: if (htmlStartCloseIndexinitialized == 0) htmlInitAutoClose();
622:
623: /* inefficient, but not a big deal */
624: for (index = 0; index < 100;index++) {
625: close = htmlStartCloseIndex[index];
626: if (close == NULL) return(0);
1.50 veillard 627: if (!xmlStrcmp(BAD_CAST *close, newtag)) break;
1.1 daniel 628: }
629:
630: i = close - htmlStartClose;
631: i++;
632: while (htmlStartClose[i] != NULL) {
1.50 veillard 633: if (!xmlStrcmp(BAD_CAST htmlStartClose[i], oldtag)) {
1.1 daniel 634: return(1);
635: }
636: i++;
637: }
638: return(0);
639: }
640:
641: /**
1.50 veillard 642: * htmlAutoCloseOnClose:
643: * @ctxt: an HTML parser context
644: * @newtag: The new tag name
645: *
646: * The HTmL DtD allows an ending tag to implicitely close other tags.
647: */
648: void
649: htmlAutoCloseOnClose(htmlParserCtxtPtr ctxt, const xmlChar *newtag) {
650: htmlElemDescPtr info;
651: xmlChar *oldname;
652: int i;
653:
654: #ifdef DEBUG
655: fprintf(stderr,"Close of %s stack: %d elements\n", newtag, ctxt->nameNr);
656: for (i = 0;i < ctxt->nameNr;i++)
657: fprintf(stderr,"%d : %s\n", i, ctxt->nameTab[i]);
658: #endif
659:
660: for (i = (ctxt->nameNr - 1);i >= 0;i--) {
661: if (!xmlStrcmp(newtag, ctxt->nameTab[i])) break;
662: }
663: if (i < 0) return;
664:
665: while (xmlStrcmp(newtag, ctxt->name)) {
666: info = htmlTagLookup(ctxt->name);
667: if ((info == NULL) || (info->endTag == 1)) {
668: #ifdef DEBUG
669: fprintf(stderr,"htmlAutoCloseOnClose: %s closes %s\n", newtag, ctxt->name);
670: #endif
671: } else {
672: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
673: ctxt->sax->error(ctxt->userData,
674: "Opening and ending tag mismatch: %s and %s\n",
675: newtag, ctxt->name);
676: ctxt->wellFormed = 0;
677: }
678: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
679: ctxt->sax->endElement(ctxt->userData, ctxt->name);
680: oldname = htmlnamePop(ctxt);
681: if (oldname != NULL) {
682: #ifdef DEBUG
683: fprintf(stderr,"htmlAutoCloseOnClose: popped %s\n", oldname);
684: #endif
685: xmlFree(oldname);
686: }
687: }
688: }
689:
690: /**
1.1 daniel 691: * htmlAutoClose:
692: * @ctxt: an HTML parser context
1.50 veillard 693: * @newtag: The new tag name or NULL
1.1 daniel 694: *
695: * The HTmL DtD allows a tag to implicitely close other tags.
696: * The list is kept in htmlStartClose array. This function is
697: * called when a new tag has been detected and generates the
698: * appropriates closes if possible/needed.
1.50 veillard 699: * If newtag is NULL this mean we are at the end of the resource
1.47 daniel 700: * and we should check
1.1 daniel 701: */
702: void
1.50 veillard 703: htmlAutoClose(htmlParserCtxtPtr ctxt, const xmlChar *newtag) {
1.15 daniel 704: xmlChar *oldname;
1.50 veillard 705: while ((newtag != NULL) && (ctxt->name != NULL) &&
706: (htmlCheckAutoClose(newtag, ctxt->name))) {
1.1 daniel 707: #ifdef DEBUG
1.50 veillard 708: fprintf(stderr,"htmlAutoClose: %s closes %s\n", newtag, ctxt->name);
1.1 daniel 709: #endif
710: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
1.15 daniel 711: ctxt->sax->endElement(ctxt->userData, ctxt->name);
1.24 daniel 712: oldname = htmlnamePop(ctxt);
1.18 daniel 713: if (oldname != NULL) {
714: #ifdef DEBUG
715: fprintf(stderr,"htmlAutoClose: popped %s\n", oldname);
716: #endif
1.17 daniel 717: xmlFree(oldname);
1.18 daniel 718: }
1.1 daniel 719: }
1.50 veillard 720: if (newtag == NULL) {
1.49 daniel 721: htmlAutoCloseOnClose(ctxt, BAD_CAST"head");
722: htmlAutoCloseOnClose(ctxt, BAD_CAST"body");
723: htmlAutoCloseOnClose(ctxt, BAD_CAST"html");
724: }
1.50 veillard 725: while ((newtag == NULL) && (ctxt->name != NULL) &&
1.47 daniel 726: ((!xmlStrcmp(ctxt->name, BAD_CAST"head")) ||
727: (!xmlStrcmp(ctxt->name, BAD_CAST"body")) ||
728: (!xmlStrcmp(ctxt->name, BAD_CAST"html")))) {
729: #ifdef DEBUG
730: fprintf(stderr,"htmlAutoClose: EOF closes %s\n", ctxt->name);
731: #endif
732: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
733: ctxt->sax->endElement(ctxt->userData, ctxt->name);
734: oldname = htmlnamePop(ctxt);
735: if (oldname != NULL) {
736: #ifdef DEBUG
737: fprintf(stderr,"htmlAutoClose: popped %s\n", oldname);
738: #endif
739: xmlFree(oldname);
740: }
741: }
742:
1.1 daniel 743: }
744:
745: /**
1.28 daniel 746: * htmlAutoCloseTag:
747: * @doc: the HTML document
748: * @name: The tag name
749: * @elem: the HTML element
750: *
751: * The HTmL DtD allows a tag to implicitely close other tags.
752: * The list is kept in htmlStartClose array. This function checks
753: * if the element or one of it's children would autoclose the
754: * given tag.
755: *
756: * Returns 1 if autoclose, 0 otherwise
757: */
758: int
759: htmlAutoCloseTag(htmlDocPtr doc, const xmlChar *name, htmlNodePtr elem) {
760: htmlNodePtr child;
761:
762: if (elem == NULL) return(1);
763: if (!xmlStrcmp(name, elem->name)) return(0);
764: if (htmlCheckAutoClose(elem->name, name)) return(1);
1.37 daniel 765: child = elem->children;
1.28 daniel 766: while (child != NULL) {
767: if (htmlAutoCloseTag(doc, name, child)) return(1);
768: child = child->next;
769: }
770: return(0);
771: }
772:
773: /**
774: * htmlIsAutoClosed:
775: * @doc: the HTML document
776: * @elem: the HTML element
777: *
778: * The HTmL DtD allows a tag to implicitely close other tags.
779: * The list is kept in htmlStartClose array. This function checks
780: * if a tag is autoclosed by one of it's child
781: *
782: * Returns 1 if autoclosed, 0 otherwise
783: */
784: int
785: htmlIsAutoClosed(htmlDocPtr doc, htmlNodePtr elem) {
786: htmlNodePtr child;
787:
788: if (elem == NULL) return(1);
1.37 daniel 789: child = elem->children;
1.28 daniel 790: while (child != NULL) {
791: if (htmlAutoCloseTag(doc, elem->name, child)) return(1);
792: child = child->next;
793: }
794: return(0);
795: }
796:
797: /**
1.43 daniel 798: * htmlCheckImplied:
799: * @ctxt: an HTML parser context
1.50 veillard 800: * @newtag: The new tag name
1.43 daniel 801: *
802: * The HTmL DtD allows a tag to exists only implicitely
803: * called when a new tag has been detected and generates the
804: * appropriates implicit tags if missing
805: */
806: void
1.50 veillard 807: htmlCheckImplied(htmlParserCtxtPtr ctxt, const xmlChar *newtag) {
808: if (!xmlStrcmp(newtag, BAD_CAST"html"))
1.43 daniel 809: return;
810: if (ctxt->nameNr <= 0) {
811: #ifdef DEBUG
812: fprintf(stderr,"Implied element html: pushed html\n");
813: #endif
814: htmlnamePush(ctxt, xmlStrdup(BAD_CAST"html"));
815: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
816: ctxt->sax->startElement(ctxt->userData, BAD_CAST"html", NULL);
817: }
1.50 veillard 818: if ((!xmlStrcmp(newtag, BAD_CAST"body")) || (!xmlStrcmp(newtag, BAD_CAST"head")))
1.43 daniel 819: return;
820: if (ctxt->nameNr <= 1) {
1.50 veillard 821: if ((!xmlStrcmp(newtag, BAD_CAST"script")) ||
822: (!xmlStrcmp(newtag, BAD_CAST"style")) ||
823: (!xmlStrcmp(newtag, BAD_CAST"meta")) ||
824: (!xmlStrcmp(newtag, BAD_CAST"link")) ||
825: (!xmlStrcmp(newtag, BAD_CAST"title")) ||
826: (!xmlStrcmp(newtag, BAD_CAST"base"))) {
1.43 daniel 827: /*
828: * dropped OBJECT ... i you put it first BODY will be
829: * assumed !
830: */
831: #ifdef DEBUG
832: fprintf(stderr,"Implied element head: pushed head\n");
833: #endif
834: htmlnamePush(ctxt, xmlStrdup(BAD_CAST"head"));
835: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
836: ctxt->sax->startElement(ctxt->userData, BAD_CAST"head", NULL);
837: } else {
838: #ifdef DEBUG
839: fprintf(stderr,"Implied element body: pushed body\n");
840: #endif
841: htmlnamePush(ctxt, xmlStrdup(BAD_CAST"body"));
842: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
843: ctxt->sax->startElement(ctxt->userData, BAD_CAST"body", NULL);
844: }
845: }
846: }
847:
1.1 daniel 848: /************************************************************************
849: * *
850: * The list of HTML predefined entities *
851: * *
852: ************************************************************************/
853:
854:
855: htmlEntityDesc html40EntitiesTable[] = {
856: /*
857: * the 4 absolute ones,
858: */
859: { 34, "quot", "quotation mark = APL quote, U+0022 ISOnum" },
860: { 38, "amp", "ampersand, U+0026 ISOnum" },
861: { 60, "lt", "less-than sign, U+003C ISOnum" },
862: { 62, "gt", "greater-than sign, U+003E ISOnum" },
863:
864: /*
865: * A bunch still in the 128-255 range
866: * Replacing them depend really on the charset used.
867: */
1.28 daniel 868: { 39, "apos", "single quote" },
1.1 daniel 869: { 160, "nbsp", "no-break space = non-breaking space, U+00A0 ISOnum" },
870: { 161, "iexcl","inverted exclamation mark, U+00A1 ISOnum" },
871: { 162, "cent", "cent sign, U+00A2 ISOnum" },
872: { 163, "pound","pound sign, U+00A3 ISOnum" },
873: { 164, "curren","currency sign, U+00A4 ISOnum" },
874: { 165, "yen", "yen sign = yuan sign, U+00A5 ISOnum" },
875: { 166, "brvbar","broken bar = broken vertical bar, U+00A6 ISOnum" },
876: { 167, "sect", "section sign, U+00A7 ISOnum" },
877: { 168, "uml", "diaeresis = spacing diaeresis, U+00A8 ISOdia" },
878: { 169, "copy", "copyright sign, U+00A9 ISOnum" },
879: { 170, "ordf", "feminine ordinal indicator, U+00AA ISOnum" },
880: { 171, "laquo","left-pointing double angle quotation mark = left pointing guillemet, U+00AB ISOnum" },
881: { 172, "not", "not sign, U+00AC ISOnum" },
882: { 173, "shy", "soft hyphen = discretionary hyphen, U+00AD ISOnum" },
883: { 174, "reg", "registered sign = registered trade mark sign, U+00AE ISOnum" },
884: { 175, "macr", "macron = spacing macron = overline = APL overbar, U+00AF ISOdia" },
885: { 176, "deg", "degree sign, U+00B0 ISOnum" },
886: { 177, "plusmn","plus-minus sign = plus-or-minus sign, U+00B1 ISOnum" },
887: { 178, "sup2", "superscript two = superscript digit two = squared, U+00B2 ISOnum" },
888: { 179, "sup3", "superscript three = superscript digit three = cubed, U+00B3 ISOnum" },
889: { 180, "acute","acute accent = spacing acute, U+00B4 ISOdia" },
890: { 181, "micro","micro sign, U+00B5 ISOnum" },
891: { 182, "para", "pilcrow sign = paragraph sign, U+00B6 ISOnum" },
1.7 daniel 892: { 183, "middot","middle dot = Georgian comma Greek middle dot, U+00B7 ISOnum" },
1.1 daniel 893: { 184, "cedil","cedilla = spacing cedilla, U+00B8 ISOdia" },
894: { 185, "sup1", "superscript one = superscript digit one, U+00B9 ISOnum" },
895: { 186, "ordm", "masculine ordinal indicator, U+00BA ISOnum" },
1.7 daniel 896: { 187, "raquo","right-pointing double angle quotation mark right pointing guillemet, U+00BB ISOnum" },
1.1 daniel 897: { 188, "frac14","vulgar fraction one quarter = fraction one quarter, U+00BC ISOnum" },
898: { 189, "frac12","vulgar fraction one half = fraction one half, U+00BD ISOnum" },
899: { 190, "frac34","vulgar fraction three quarters = fraction three quarters, U+00BE ISOnum" },
900: { 191, "iquest","inverted question mark = turned question mark, U+00BF ISOnum" },
901: { 192, "Agrave","latin capital letter A with grave = latin capital letter A grave, U+00C0 ISOlat1" },
902: { 193, "Aacute","latin capital letter A with acute, U+00C1 ISOlat1" },
903: { 194, "Acirc","latin capital letter A with circumflex, U+00C2 ISOlat1" },
904: { 195, "Atilde","latin capital letter A with tilde, U+00C3 ISOlat1" },
905: { 196, "Auml", "latin capital letter A with diaeresis, U+00C4 ISOlat1" },
906: { 197, "Aring","latin capital letter A with ring above = latin capital letter A ring, U+00C5 ISOlat1" },
907: { 198, "AElig","latin capital letter AE = latin capital ligature AE, U+00C6 ISOlat1" },
908: { 199, "Ccedil","latin capital letter C with cedilla, U+00C7 ISOlat1" },
909: { 200, "Egrave","latin capital letter E with grave, U+00C8 ISOlat1" },
910: { 201, "Eacute","latin capital letter E with acute, U+00C9 ISOlat1" },
911: { 202, "Ecirc","latin capital letter E with circumflex, U+00CA ISOlat1" },
912: { 203, "Euml", "latin capital letter E with diaeresis, U+00CB ISOlat1" },
913: { 204, "Igrave","latin capital letter I with grave, U+00CC ISOlat1" },
914: { 205, "Iacute","latin capital letter I with acute, U+00CD ISOlat1" },
915: { 206, "Icirc","latin capital letter I with circumflex, U+00CE ISOlat1" },
916: { 207, "Iuml", "latin capital letter I with diaeresis, U+00CF ISOlat1" },
917: { 208, "ETH", "latin capital letter ETH, U+00D0 ISOlat1" },
918: { 209, "Ntilde","latin capital letter N with tilde, U+00D1 ISOlat1" },
919: { 210, "Ograve","latin capital letter O with grave, U+00D2 ISOlat1" },
920: { 211, "Oacute","latin capital letter O with acute, U+00D3 ISOlat1" },
921: { 212, "Ocirc","latin capital letter O with circumflex, U+00D4 ISOlat1" },
922: { 213, "Otilde","latin capital letter O with tilde, U+00D5 ISOlat1" },
923: { 214, "Ouml", "latin capital letter O with diaeresis, U+00D6 ISOlat1" },
924: { 215, "times","multiplication sign, U+00D7 ISOnum" },
1.7 daniel 925: { 216, "Oslash","latin capital letter O with stroke latin capital letter O slash, U+00D8 ISOlat1" },
1.1 daniel 926: { 217, "Ugrave","latin capital letter U with grave, U+00D9 ISOlat1" },
927: { 218, "Uacute","latin capital letter U with acute, U+00DA ISOlat1" },
928: { 219, "Ucirc","latin capital letter U with circumflex, U+00DB ISOlat1" },
929: { 220, "Uuml", "latin capital letter U with diaeresis, U+00DC ISOlat1" },
930: { 221, "Yacute","latin capital letter Y with acute, U+00DD ISOlat1" },
931: { 222, "THORN","latin capital letter THORN, U+00DE ISOlat1" },
932: { 223, "szlig","latin small letter sharp s = ess-zed, U+00DF ISOlat1" },
933: { 224, "agrave","latin small letter a with grave = latin small letter a grave, U+00E0 ISOlat1" },
934: { 225, "aacute","latin small letter a with acute, U+00E1 ISOlat1" },
935: { 226, "acirc","latin small letter a with circumflex, U+00E2 ISOlat1" },
936: { 227, "atilde","latin small letter a with tilde, U+00E3 ISOlat1" },
937: { 228, "auml", "latin small letter a with diaeresis, U+00E4 ISOlat1" },
938: { 229, "aring","latin small letter a with ring above = latin small letter a ring, U+00E5 ISOlat1" },
939: { 230, "aelig","latin small letter ae = latin small ligature ae, U+00E6 ISOlat1" },
940: { 231, "ccedil","latin small letter c with cedilla, U+00E7 ISOlat1" },
941: { 232, "egrave","latin small letter e with grave, U+00E8 ISOlat1" },
942: { 233, "eacute","latin small letter e with acute, U+00E9 ISOlat1" },
943: { 234, "ecirc","latin small letter e with circumflex, U+00EA ISOlat1" },
944: { 235, "euml", "latin small letter e with diaeresis, U+00EB ISOlat1" },
945: { 236, "igrave","latin small letter i with grave, U+00EC ISOlat1" },
946: { 237, "iacute","latin small letter i with acute, U+00ED ISOlat1" },
947: { 238, "icirc","latin small letter i with circumflex, U+00EE ISOlat1" },
948: { 239, "iuml", "latin small letter i with diaeresis, U+00EF ISOlat1" },
949: { 240, "eth", "latin small letter eth, U+00F0 ISOlat1" },
950: { 241, "ntilde","latin small letter n with tilde, U+00F1 ISOlat1" },
951: { 242, "ograve","latin small letter o with grave, U+00F2 ISOlat1" },
952: { 243, "oacute","latin small letter o with acute, U+00F3 ISOlat1" },
953: { 244, "ocirc","latin small letter o with circumflex, U+00F4 ISOlat1" },
954: { 245, "otilde","latin small letter o with tilde, U+00F5 ISOlat1" },
955: { 246, "ouml", "latin small letter o with diaeresis, U+00F6 ISOlat1" },
956: { 247, "divide","division sign, U+00F7 ISOnum" },
957: { 248, "oslash","latin small letter o with stroke, = latin small letter o slash, U+00F8 ISOlat1" },
958: { 249, "ugrave","latin small letter u with grave, U+00F9 ISOlat1" },
959: { 250, "uacute","latin small letter u with acute, U+00FA ISOlat1" },
960: { 251, "ucirc","latin small letter u with circumflex, U+00FB ISOlat1" },
961: { 252, "uuml", "latin small letter u with diaeresis, U+00FC ISOlat1" },
962: { 253, "yacute","latin small letter y with acute, U+00FD ISOlat1" },
963: { 254, "thorn","latin small letter thorn with, U+00FE ISOlat1" },
964: { 255, "yuml", "latin small letter y with diaeresis, U+00FF ISOlat1" },
965:
966: /*
967: * Anything below should really be kept as entities references
968: */
969: { 402, "fnof", "latin small f with hook = function = florin, U+0192 ISOtech" },
970:
971: { 913, "Alpha","greek capital letter alpha, U+0391" },
972: { 914, "Beta", "greek capital letter beta, U+0392" },
973: { 915, "Gamma","greek capital letter gamma, U+0393 ISOgrk3" },
974: { 916, "Delta","greek capital letter delta, U+0394 ISOgrk3" },
975: { 917, "Epsilon","greek capital letter epsilon, U+0395" },
976: { 918, "Zeta", "greek capital letter zeta, U+0396" },
977: { 919, "Eta", "greek capital letter eta, U+0397" },
978: { 920, "Theta","greek capital letter theta, U+0398 ISOgrk3" },
979: { 921, "Iota", "greek capital letter iota, U+0399" },
980: { 922, "Kappa","greek capital letter kappa, U+039A" },
981: { 923, "Lambda""greek capital letter lambda, U+039B ISOgrk3" },
982: { 924, "Mu", "greek capital letter mu, U+039C" },
983: { 925, "Nu", "greek capital letter nu, U+039D" },
984: { 926, "Xi", "greek capital letter xi, U+039E ISOgrk3" },
985: { 927, "Omicron","greek capital letter omicron, U+039F" },
986: { 928, "Pi", "greek capital letter pi, U+03A0 ISOgrk3" },
987: { 929, "Rho", "greek capital letter rho, U+03A1" },
988: { 931, "Sigma","greek capital letter sigma, U+03A3 ISOgrk3" },
989: { 932, "Tau", "greek capital letter tau, U+03A4" },
990: { 933, "Upsilon","greek capital letter upsilon, U+03A5 ISOgrk3" },
991: { 934, "Phi", "greek capital letter phi, U+03A6 ISOgrk3" },
992: { 935, "Chi", "greek capital letter chi, U+03A7" },
993: { 936, "Psi", "greek capital letter psi, U+03A8 ISOgrk3" },
994: { 937, "Omega","greek capital letter omega, U+03A9 ISOgrk3" },
995:
996: { 945, "alpha","greek small letter alpha, U+03B1 ISOgrk3" },
997: { 946, "beta", "greek small letter beta, U+03B2 ISOgrk3" },
998: { 947, "gamma","greek small letter gamma, U+03B3 ISOgrk3" },
999: { 948, "delta","greek small letter delta, U+03B4 ISOgrk3" },
1000: { 949, "epsilon","greek small letter epsilon, U+03B5 ISOgrk3" },
1001: { 950, "zeta", "greek small letter zeta, U+03B6 ISOgrk3" },
1002: { 951, "eta", "greek small letter eta, U+03B7 ISOgrk3" },
1003: { 952, "theta","greek small letter theta, U+03B8 ISOgrk3" },
1004: { 953, "iota", "greek small letter iota, U+03B9 ISOgrk3" },
1005: { 954, "kappa","greek small letter kappa, U+03BA ISOgrk3" },
1006: { 955, "lambda","greek small letter lambda, U+03BB ISOgrk3" },
1007: { 956, "mu", "greek small letter mu, U+03BC ISOgrk3" },
1008: { 957, "nu", "greek small letter nu, U+03BD ISOgrk3" },
1009: { 958, "xi", "greek small letter xi, U+03BE ISOgrk3" },
1010: { 959, "omicron","greek small letter omicron, U+03BF NEW" },
1011: { 960, "pi", "greek small letter pi, U+03C0 ISOgrk3" },
1012: { 961, "rho", "greek small letter rho, U+03C1 ISOgrk3" },
1013: { 962, "sigmaf","greek small letter final sigma, U+03C2 ISOgrk3" },
1014: { 963, "sigma","greek small letter sigma, U+03C3 ISOgrk3" },
1015: { 964, "tau", "greek small letter tau, U+03C4 ISOgrk3" },
1016: { 965, "upsilon","greek small letter upsilon, U+03C5 ISOgrk3" },
1017: { 966, "phi", "greek small letter phi, U+03C6 ISOgrk3" },
1018: { 967, "chi", "greek small letter chi, U+03C7 ISOgrk3" },
1019: { 968, "psi", "greek small letter psi, U+03C8 ISOgrk3" },
1020: { 969, "omega","greek small letter omega, U+03C9 ISOgrk3" },
1021: { 977, "thetasym","greek small letter theta symbol, U+03D1 NEW" },
1022: { 978, "upsih","greek upsilon with hook symbol, U+03D2 NEW" },
1023: { 982, "piv", "greek pi symbol, U+03D6 ISOgrk3" },
1024:
1025: { 8226, "bull", "bullet = black small circle, U+2022 ISOpub" },
1026: { 8230, "hellip","horizontal ellipsis = three dot leader, U+2026 ISOpub" },
1027: { 8242, "prime","prime = minutes = feet, U+2032 ISOtech" },
1028: { 8243, "Prime","double prime = seconds = inches, U+2033 ISOtech" },
1029: { 8254, "oline","overline = spacing overscore, U+203E NEW" },
1030: { 8260, "frasl","fraction slash, U+2044 NEW" },
1031:
1.7 daniel 1032: { 8472, "weierp","script capital P = power set = Weierstrass p, U+2118 ISOamso" },
1.1 daniel 1033: { 8465, "image","blackletter capital I = imaginary part, U+2111 ISOamso" },
1034: { 8476, "real", "blackletter capital R = real part symbol, U+211C ISOamso" },
1035: { 8482, "trade","trade mark sign, U+2122 ISOnum" },
1036: { 8501, "alefsym","alef symbol = first transfinite cardinal, U+2135 NEW" },
1037: { 8592, "larr", "leftwards arrow, U+2190 ISOnum" },
1038: { 8593, "uarr", "upwards arrow, U+2191 ISOnum" },
1039: { 8594, "rarr", "rightwards arrow, U+2192 ISOnum" },
1040: { 8595, "darr", "downwards arrow, U+2193 ISOnum" },
1041: { 8596, "harr", "left right arrow, U+2194 ISOamsa" },
1042: { 8629, "crarr","downwards arrow with corner leftwards = carriage return, U+21B5 NEW" },
1043: { 8656, "lArr", "leftwards double arrow, U+21D0 ISOtech" },
1044: { 8657, "uArr", "upwards double arrow, U+21D1 ISOamsa" },
1045: { 8658, "rArr", "rightwards double arrow, U+21D2 ISOtech" },
1046: { 8659, "dArr", "downwards double arrow, U+21D3 ISOamsa" },
1047: { 8660, "hArr", "left right double arrow, U+21D4 ISOamsa" },
1048:
1049:
1050: { 8704, "forall","for all, U+2200 ISOtech" },
1051: { 8706, "part", "partial differential, U+2202 ISOtech" },
1052: { 8707, "exist","there exists, U+2203 ISOtech" },
1053: { 8709, "empty","empty set = null set = diameter, U+2205 ISOamso" },
1054: { 8711, "nabla","nabla = backward difference, U+2207 ISOtech" },
1055: { 8712, "isin", "element of, U+2208 ISOtech" },
1056: { 8713, "notin","not an element of, U+2209 ISOtech" },
1057: { 8715, "ni", "contains as member, U+220B ISOtech" },
1058: { 8719, "prod", "n-ary product = product sign, U+220F ISOamsb" },
1059: { 8721, "sum", "n-ary sumation, U+2211 ISOamsb" },
1060: { 8722, "minus","minus sign, U+2212 ISOtech" },
1061: { 8727, "lowast","asterisk operator, U+2217 ISOtech" },
1062: { 8730, "radic","square root = radical sign, U+221A ISOtech" },
1063: { 8733, "prop", "proportional to, U+221D ISOtech" },
1064: { 8734, "infin","infinity, U+221E ISOtech" },
1065: { 8736, "ang", "angle, U+2220 ISOamso" },
1066: { 8743, "and", "logical and = wedge, U+2227 ISOtech" },
1067: { 8744, "or", "logical or = vee, U+2228 ISOtech" },
1068: { 8745, "cap", "intersection = cap, U+2229 ISOtech" },
1069: { 8746, "cup", "union = cup, U+222A ISOtech" },
1070: { 8747, "int", "integral, U+222B ISOtech" },
1071: { 8756, "there4","therefore, U+2234 ISOtech" },
1072: { 8764, "sim", "tilde operator = varies with = similar to, U+223C ISOtech" },
1073: { 8773, "cong", "approximately equal to, U+2245 ISOtech" },
1074: { 8776, "asymp","almost equal to = asymptotic to, U+2248 ISOamsr" },
1075: { 8800, "ne", "not equal to, U+2260 ISOtech" },
1076: { 8801, "equiv","identical to, U+2261 ISOtech" },
1077: { 8804, "le", "less-than or equal to, U+2264 ISOtech" },
1078: { 8805, "ge", "greater-than or equal to, U+2265 ISOtech" },
1079: { 8834, "sub", "subset of, U+2282 ISOtech" },
1080: { 8835, "sup", "superset of, U+2283 ISOtech" },
1081: { 8836, "nsub", "not a subset of, U+2284 ISOamsn" },
1082: { 8838, "sube", "subset of or equal to, U+2286 ISOtech" },
1083: { 8839, "supe", "superset of or equal to, U+2287 ISOtech" },
1084: { 8853, "oplus","circled plus = direct sum, U+2295 ISOamsb" },
1085: { 8855, "otimes","circled times = vector product, U+2297 ISOamsb" },
1086: { 8869, "perp", "up tack = orthogonal to = perpendicular, U+22A5 ISOtech" },
1087: { 8901, "sdot", "dot operator, U+22C5 ISOamsb" },
1088: { 8968, "lceil","left ceiling = apl upstile, U+2308 ISOamsc" },
1089: { 8969, "rceil","right ceiling, U+2309 ISOamsc" },
1090: { 8970, "lfloor","left floor = apl downstile, U+230A ISOamsc" },
1091: { 8971, "rfloor","right floor, U+230B ISOamsc" },
1092: { 9001, "lang", "left-pointing angle bracket = bra, U+2329 ISOtech" },
1093: { 9002, "rang", "right-pointing angle bracket = ket, U+232A ISOtech" },
1094: { 9674, "loz", "lozenge, U+25CA ISOpub" },
1095:
1096: { 9824, "spades","black spade suit, U+2660 ISOpub" },
1097: { 9827, "clubs","black club suit = shamrock, U+2663 ISOpub" },
1098: { 9829, "hearts","black heart suit = valentine, U+2665 ISOpub" },
1099: { 9830, "diams","black diamond suit, U+2666 ISOpub" },
1100:
1101: { 338, "OElig","latin capital ligature OE, U+0152 ISOlat2" },
1102: { 339, "oelig","latin small ligature oe, U+0153 ISOlat2" },
1103: { 352, "Scaron","latin capital letter S with caron, U+0160 ISOlat2" },
1104: { 353, "scaron","latin small letter s with caron, U+0161 ISOlat2" },
1105: { 376, "Yuml", "latin capital letter Y with diaeresis, U+0178 ISOlat2" },
1106: { 710, "circ", "modifier letter circumflex accent, U+02C6 ISOpub" },
1107: { 732, "tilde","small tilde, U+02DC ISOdia" },
1108:
1109: { 8194, "ensp", "en space, U+2002 ISOpub" },
1110: { 8195, "emsp", "em space, U+2003 ISOpub" },
1111: { 8201, "thinsp","thin space, U+2009 ISOpub" },
1112: { 8204, "zwnj", "zero width non-joiner, U+200C NEW RFC 2070" },
1113: { 8205, "zwj", "zero width joiner, U+200D NEW RFC 2070" },
1114: { 8206, "lrm", "left-to-right mark, U+200E NEW RFC 2070" },
1115: { 8207, "rlm", "right-to-left mark, U+200F NEW RFC 2070" },
1116: { 8211, "ndash","en dash, U+2013 ISOpub" },
1117: { 8212, "mdash","em dash, U+2014 ISOpub" },
1118: { 8216, "lsquo","left single quotation mark, U+2018 ISOnum" },
1119: { 8217, "rsquo","right single quotation mark, U+2019 ISOnum" },
1120: { 8218, "sbquo","single low-9 quotation mark, U+201A NEW" },
1121: { 8220, "ldquo","left double quotation mark, U+201C ISOnum" },
1122: { 8221, "rdquo","right double quotation mark, U+201D ISOnum" },
1123: { 8222, "bdquo","double low-9 quotation mark, U+201E NEW" },
1124: { 8224, "dagger","dagger, U+2020 ISOpub" },
1125: { 8225, "Dagger","double dagger, U+2021 ISOpub" },
1126: { 8240, "permil","per mille sign, U+2030 ISOtech" },
1127: { 8249, "lsaquo","single left-pointing angle quotation mark, U+2039 ISO proposed" },
1.7 daniel 1128: { 8250, "rsaquo","single right-pointing angle quotation mark, U+203A ISO proposed" },
1.1 daniel 1129: { 8364, "euro", "euro sign, U+20AC NEW" }
1130: };
1131:
1132: /************************************************************************
1133: * *
1134: * Commodity functions to handle entities *
1135: * *
1136: ************************************************************************/
1137:
1138: /*
1139: * Macro used to grow the current buffer.
1140: */
1141: #define growBuffer(buffer) { \
1142: buffer##_size *= 2; \
1.14 daniel 1143: buffer = (xmlChar *) xmlRealloc(buffer, buffer##_size * sizeof(xmlChar)); \
1.1 daniel 1144: if (buffer == NULL) { \
1145: perror("realloc failed"); \
1.33 daniel 1146: return(NULL); \
1.1 daniel 1147: } \
1148: }
1149:
1150: /**
1151: * htmlEntityLookup:
1152: * @name: the entity name
1153: *
1154: * Lookup the given entity in EntitiesTable
1155: *
1156: * TODO: the linear scan is really ugly, an hash table is really needed.
1157: *
1158: * Returns the associated htmlEntityDescPtr if found, NULL otherwise.
1159: */
1160: htmlEntityDescPtr
1.14 daniel 1161: htmlEntityLookup(const xmlChar *name) {
1.1 daniel 1162: int i;
1163:
1164: for (i = 0;i < (sizeof(html40EntitiesTable)/
1165: sizeof(html40EntitiesTable[0]));i++) {
1.8 daniel 1166: if (!xmlStrcmp(name, BAD_CAST html40EntitiesTable[i].name)) {
1.1 daniel 1167: #ifdef DEBUG
1.18 daniel 1168: fprintf(stderr,"Found entity %s\n", name);
1.1 daniel 1169: #endif
1170: return(&html40EntitiesTable[i]);
1171: }
1172: }
1173: return(NULL);
1174: }
1175:
1.53 veillard 1176: /**
1177: * UTF8ToHtml:
1178: * @out: a pointer to an array of bytes to store the result
1179: * @outlen: the length of @out
1180: * @in: a pointer to an array of UTF-8 chars
1181: * @inlen: the length of @in
1182: *
1183: * Take a block of UTF-8 chars in and try to convert it to an ASCII
1184: * plus HTML entities block of chars out.
1185: *
1186: * Returns 0 if success, -2 if the transcoding fails, or -1 otherwise
1187: * The value of @inlen after return is the number of octets consumed
1188: * as the return value is positive, else unpredictiable.
1189: * The value of @outlen after return is the number of octets consumed.
1190: */
1191: int
1192: UTF8ToHtml(unsigned char* out, int *outlen,
1193: const unsigned char* in, int *inlen) {
1194: const unsigned char* processed = in;
1195: const unsigned char* outend;
1196: const unsigned char* outstart = out;
1197: const unsigned char* instart = in;
1198: const unsigned char* inend;
1199: unsigned int c, d;
1200: int trailing;
1201:
1202: if (in == NULL) {
1203: /*
1204: * initialization nothing to do
1205: */
1206: *outlen = 0;
1207: *inlen = 0;
1208: return(0);
1209: }
1210: inend = in + (*inlen);
1211: outend = out + (*outlen);
1212: while (in < inend) {
1213: d = *in++;
1214: if (d < 0x80) { c= d; trailing= 0; }
1215: else if (d < 0xC0) {
1216: /* trailing byte in leading position */
1217: *outlen = out - outstart;
1218: *inlen = processed - instart;
1219: return(-2);
1220: } else if (d < 0xE0) { c= d & 0x1F; trailing= 1; }
1221: else if (d < 0xF0) { c= d & 0x0F; trailing= 2; }
1222: else if (d < 0xF8) { c= d & 0x07; trailing= 3; }
1223: else {
1224: /* no chance for this in Ascii */
1225: *outlen = out - outstart;
1226: *inlen = processed - instart;
1227: return(-2);
1228: }
1229:
1230: if (inend - in < trailing) {
1231: break;
1232: }
1233:
1234: for ( ; trailing; trailing--) {
1235: if ((in >= inend) || (((d= *in++) & 0xC0) != 0x80))
1236: break;
1237: c <<= 6;
1238: c |= d & 0x3F;
1239: }
1240:
1241: /* assertion: c is a single UTF-4 value */
1242: if (c < 0x80) {
1243: if (out >= outend)
1244: break;
1245: *out++ = c;
1246: } else {
1247: int i, j, len;
1248: /*
1249: * Try to lookup a predefined HTML entity for it
1250: */
1251:
1252: for (i = 0;i < (sizeof(html40EntitiesTable)/
1253: sizeof(html40EntitiesTable[0]));i++) {
1254: if (html40EntitiesTable[i].value == c) {
1255: #ifdef DEBUG
1256: fprintf(stderr,"Found entity %s\n", name);
1257: #endif
1258: goto found_ent;
1259: }
1260: if (html40EntitiesTable[i].value > c)
1261: break;
1262: }
1263:
1264: /* no chance for this in Ascii */
1265: *outlen = out - outstart;
1266: *inlen = processed - instart;
1267: return(-2);
1268: found_ent:
1269: len = strlen(html40EntitiesTable[i].name);
1270: if (out + 2 + len >= outend)
1271: break;
1272: *out++ = '&';
1273: for (j = 0;j < len;j++)
1274: *out++ = html40EntitiesTable[i].name[j];
1275: *out++ = ';';
1276: }
1277: processed = in;
1278: }
1279: *outlen = out - outstart;
1280: *inlen = processed - instart;
1281: return(0);
1282: }
1283:
1.1 daniel 1284:
1285: /**
1286: * htmlDecodeEntities:
1287: * @ctxt: the parser context
1288: * @len: the len to decode (in bytes !), -1 for no size limit
1.14 daniel 1289: * @end: an end marker xmlChar, 0 if none
1290: * @end2: an end marker xmlChar, 0 if none
1291: * @end3: an end marker xmlChar, 0 if none
1.1 daniel 1292: *
1293: * Subtitute the HTML entities by their value
1294: *
1.19 daniel 1295: * DEPRECATED !!!!
1.1 daniel 1296: *
1297: * Returns A newly allocated string with the substitution done. The caller
1298: * must deallocate it !
1299: */
1.14 daniel 1300: xmlChar *
1.1 daniel 1301: htmlDecodeEntities(htmlParserCtxtPtr ctxt, int len,
1.14 daniel 1302: xmlChar end, xmlChar end2, xmlChar end3) {
1.53 veillard 1303: xmlChar *name = NULL;
1.14 daniel 1304: xmlChar *buffer = NULL;
1.53 veillard 1305: unsigned int buffer_size = 0;
1306: unsigned int nbchars = 0;
1.1 daniel 1307: htmlEntityDescPtr ent;
1308: unsigned int max = (unsigned int) len;
1.53 veillard 1309: int c,l;
1310:
1311: if (ctxt->depth > 40) {
1312: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1313: ctxt->sax->error(ctxt->userData,
1314: "Detected entity reference loop\n");
1315: ctxt->wellFormed = 0;
1316: ctxt->disableSAX = 1;
1317: ctxt->errNo = XML_ERR_ENTITY_LOOP;
1318: return(NULL);
1319: }
1.1 daniel 1320:
1321: /*
1322: * allocate a translation buffer.
1323: */
1.31 daniel 1324: buffer_size = HTML_PARSER_BIG_BUFFER_SIZE;
1.14 daniel 1325: buffer = (xmlChar *) xmlMalloc(buffer_size * sizeof(xmlChar));
1.1 daniel 1326: if (buffer == NULL) {
1.53 veillard 1327: perror("xmlDecodeEntities: malloc failed");
1.1 daniel 1328: return(NULL);
1329: }
1330:
1331: /*
1332: * Ok loop until we reach one of the ending char or a size limit.
1333: */
1.53 veillard 1334: c = CUR_CHAR(l);
1335: while ((nbchars < max) && (c != end) &&
1336: (c != end2) && (c != end3)) {
1337:
1338: if (c == 0) break;
1339: if (((c == '&') && (ctxt->token != '&')) && (NXT(1) == '#')) {
1340: int val = htmlParseCharRef(ctxt);
1341: COPY_BUF(0,buffer,nbchars,val);
1342: NEXTL(l);
1343: } else if ((c == '&') && (ctxt->token != '&')) {
1344: ent = htmlParseEntityRef(ctxt, &name);
1345: if (name != NULL) {
1346: if (ent != NULL) {
1347: int val = ent->value;
1348: COPY_BUF(0,buffer,nbchars,val);
1349: NEXTL(l);
1350: } else {
1351: const xmlChar *cur = name;
1.1 daniel 1352:
1.53 veillard 1353: buffer[nbchars++] = '&';
1354: if (nbchars > buffer_size - HTML_PARSER_BUFFER_SIZE) {
1355: growBuffer(buffer);
1356: }
1357: while (*cur != 0) {
1358: buffer[nbchars++] = *cur++;
1.1 daniel 1359: }
1.53 veillard 1360: buffer[nbchars++] = ';';
1.1 daniel 1361: }
1362: }
1363: } else {
1.53 veillard 1364: COPY_BUF(l,buffer,nbchars,c);
1365: NEXTL(l);
1366: if (nbchars > buffer_size - HTML_PARSER_BUFFER_SIZE) {
1367: growBuffer(buffer);
1.1 daniel 1368: }
1369: }
1.53 veillard 1370: c = CUR_CHAR(l);
1.1 daniel 1371: }
1.53 veillard 1372: buffer[nbchars++] = 0;
1.1 daniel 1373: return(buffer);
1374: }
1375:
1.31 daniel 1376: /************************************************************************
1377: * *
1378: * Commodity functions to handle streams *
1379: * *
1380: ************************************************************************/
1381:
1382: /**
1383: * htmlFreeInputStream:
1384: * @input: an htmlParserInputPtr
1385: *
1386: * Free up an input stream.
1387: */
1388: void
1389: htmlFreeInputStream(htmlParserInputPtr input) {
1390: if (input == NULL) return;
1391:
1392: if (input->filename != NULL) xmlFree((char *) input->filename);
1393: if (input->directory != NULL) xmlFree((char *) input->directory);
1394: if ((input->free != NULL) && (input->base != NULL))
1395: input->free((xmlChar *) input->base);
1396: if (input->buf != NULL)
1397: xmlFreeParserInputBuffer(input->buf);
1398: memset(input, -1, sizeof(htmlParserInput));
1399: xmlFree(input);
1400: }
1401:
1402: /**
1403: * htmlNewInputStream:
1404: * @ctxt: an HTML parser context
1405: *
1406: * Create a new input stream structure
1407: * Returns the new input stream or NULL
1408: */
1409: htmlParserInputPtr
1410: htmlNewInputStream(htmlParserCtxtPtr ctxt) {
1411: htmlParserInputPtr input;
1412:
1413: input = (xmlParserInputPtr) xmlMalloc(sizeof(htmlParserInput));
1414: if (input == NULL) {
1415: ctxt->errNo = XML_ERR_NO_MEMORY;
1416: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1417: ctxt->sax->error(ctxt->userData,
1418: "malloc: couldn't allocate a new input stream\n");
1419: ctxt->errNo = XML_ERR_NO_MEMORY;
1420: return(NULL);
1421: }
1.51 veillard 1422: memset(input, 0, sizeof(htmlParserInput));
1.31 daniel 1423: input->filename = NULL;
1424: input->directory = NULL;
1425: input->base = NULL;
1426: input->cur = NULL;
1427: input->buf = NULL;
1428: input->line = 1;
1429: input->col = 1;
1430: input->buf = NULL;
1431: input->free = NULL;
1.51 veillard 1432: input->version = NULL;
1.31 daniel 1433: input->consumed = 0;
1434: input->length = 0;
1435: return(input);
1436: }
1437:
1.1 daniel 1438:
1439: /************************************************************************
1440: * *
1441: * Commodity functions, cleanup needed ? *
1442: * *
1443: ************************************************************************/
1444:
1445: /**
1446: * areBlanks:
1447: * @ctxt: an HTML parser context
1.14 daniel 1448: * @str: a xmlChar *
1.1 daniel 1449: * @len: the size of @str
1450: *
1451: * Is this a sequence of blank chars that one can ignore ?
1452: *
1453: * Returns 1 if ignorable 0 otherwise.
1454: */
1455:
1.14 daniel 1456: static int areBlanks(htmlParserCtxtPtr ctxt, const xmlChar *str, int len) {
1.1 daniel 1457: int i;
1458: xmlNodePtr lastChild;
1459:
1460: for (i = 0;i < len;i++)
1461: if (!(IS_BLANK(str[i]))) return(0);
1462:
1.48 daniel 1463: if (CUR == 0) return(1);
1.1 daniel 1464: if (CUR != '<') return(0);
1465: if (ctxt->node == NULL) return(0);
1466: lastChild = xmlGetLastChild(ctxt->node);
1467: if (lastChild == NULL) {
1468: if (ctxt->node->content != NULL) return(0);
1469: } else if (xmlNodeIsText(lastChild))
1470: return(0);
1471: return(1);
1472: }
1473:
1474: /**
1475: * htmlHandleEntity:
1476: * @ctxt: an HTML parser context
1477: * @entity: an XML entity pointer.
1478: *
1479: * Default handling of an HTML entity, call the parser with the
1480: * substitution string
1481: */
1482:
1483: void
1484: htmlHandleEntity(htmlParserCtxtPtr ctxt, xmlEntityPtr entity) {
1485: int len;
1486:
1487: if (entity->content == NULL) {
1488: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1489: ctxt->sax->error(ctxt->userData, "htmlHandleEntity %s: content == NULL\n",
1490: entity->name);
1491: ctxt->wellFormed = 0;
1492: return;
1493: }
1494: len = xmlStrlen(entity->content);
1495:
1496: /*
1497: * Just handle the content as a set of chars.
1498: */
1499: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
1500: ctxt->sax->characters(ctxt->userData, entity->content, len);
1501:
1502: }
1503:
1504: /**
1505: * htmlNewDoc:
1506: * @URI: URI for the dtd, or NULL
1507: * @ExternalID: the external ID of the DTD, or NULL
1508: *
1509: * Returns a new document
1510: */
1511: htmlDocPtr
1.14 daniel 1512: htmlNewDoc(const xmlChar *URI, const xmlChar *ExternalID) {
1.1 daniel 1513: xmlDocPtr cur;
1514:
1515: /*
1516: * Allocate a new document and fill the fields.
1517: */
1.11 daniel 1518: cur = (xmlDocPtr) xmlMalloc(sizeof(xmlDoc));
1.1 daniel 1519: if (cur == NULL) {
1520: fprintf(stderr, "xmlNewDoc : malloc failed\n");
1521: return(NULL);
1522: }
1.10 daniel 1523: memset(cur, 0, sizeof(xmlDoc));
1.1 daniel 1524:
1.20 daniel 1525: cur->type = XML_HTML_DOCUMENT_NODE;
1.1 daniel 1526: cur->version = NULL;
1527: cur->intSubset = NULL;
1.28 daniel 1528: if ((ExternalID == NULL) &&
1529: (URI == NULL))
1530: xmlCreateIntSubset(cur, BAD_CAST "HTML",
1531: BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN",
1532: BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd");
1533: else
1534: xmlCreateIntSubset(cur, BAD_CAST "HTML", ExternalID, URI);
1.41 daniel 1535: cur->doc = cur;
1.1 daniel 1536: cur->name = NULL;
1.37 daniel 1537: cur->children = NULL;
1.1 daniel 1538: cur->extSubset = NULL;
1539: cur->oldNs = NULL;
1540: cur->encoding = NULL;
1541: cur->standalone = 1;
1542: cur->compression = 0;
1.12 daniel 1543: cur->ids = NULL;
1544: cur->refs = NULL;
1.1 daniel 1545: #ifndef XML_WITHOUT_CORBA
1546: cur->_private = NULL;
1547: #endif
1548: return(cur);
1549: }
1550:
1551:
1552: /************************************************************************
1553: * *
1554: * The parser itself *
1555: * Relates to http://www.w3.org/TR/html40 *
1556: * *
1557: ************************************************************************/
1558:
1559: /************************************************************************
1560: * *
1561: * The parser itself *
1562: * *
1563: ************************************************************************/
1564:
1565: /**
1566: * htmlParseHTMLName:
1567: * @ctxt: an HTML parser context
1568: *
1.26 daniel 1569: * parse an HTML tag or attribute name, note that we convert it to lowercase
1.1 daniel 1570: * since HTML names are not case-sensitive.
1571: *
1572: * Returns the Tag Name parsed or NULL
1573: */
1574:
1.14 daniel 1575: xmlChar *
1.1 daniel 1576: htmlParseHTMLName(htmlParserCtxtPtr ctxt) {
1.14 daniel 1577: xmlChar *ret = NULL;
1.1 daniel 1578: int i = 0;
1.31 daniel 1579: xmlChar loc[HTML_PARSER_BUFFER_SIZE];
1.1 daniel 1580:
1581: if (!IS_LETTER(CUR) && (CUR != '_') &&
1582: (CUR != ':')) return(NULL);
1583:
1.31 daniel 1584: while ((i < HTML_PARSER_BUFFER_SIZE) &&
1.45 daniel 1585: ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) ||
1586: (CUR == ':') || (CUR == '_'))) {
1.26 daniel 1587: if ((CUR >= 'A') && (CUR <= 'Z')) loc[i] = CUR + 0x20;
1.1 daniel 1588: else loc[i] = CUR;
1589: i++;
1590:
1591: NEXT;
1592: }
1593:
1594: ret = xmlStrndup(loc, i);
1595:
1596: return(ret);
1597: }
1598:
1599: /**
1600: * htmlParseName:
1601: * @ctxt: an HTML parser context
1602: *
1603: * parse an HTML name, this routine is case sensistive.
1604: *
1605: * Returns the Name parsed or NULL
1606: */
1607:
1.14 daniel 1608: xmlChar *
1.1 daniel 1609: htmlParseName(htmlParserCtxtPtr ctxt) {
1.14 daniel 1610: xmlChar buf[HTML_MAX_NAMELEN];
1.5 daniel 1611: int len = 0;
1.1 daniel 1612:
1.5 daniel 1613: GROW;
1614: if (!IS_LETTER(CUR) && (CUR != '_')) {
1615: return(NULL);
1616: }
1.1 daniel 1617:
1618: while ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) ||
1619: (CUR == '.') || (CUR == '-') ||
1620: (CUR == '_') || (CUR == ':') ||
1621: (IS_COMBINING(CUR)) ||
1.5 daniel 1622: (IS_EXTENDER(CUR))) {
1623: buf[len++] = CUR;
1.1 daniel 1624: NEXT;
1.5 daniel 1625: if (len >= HTML_MAX_NAMELEN) {
1626: fprintf(stderr,
1627: "htmlParseName: reached HTML_MAX_NAMELEN limit\n");
1628: while ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) ||
1629: (CUR == '.') || (CUR == '-') ||
1630: (CUR == '_') || (CUR == ':') ||
1631: (IS_COMBINING(CUR)) ||
1632: (IS_EXTENDER(CUR)))
1633: NEXT;
1634: break;
1635: }
1636: }
1637: return(xmlStrndup(buf, len));
1.1 daniel 1638: }
1639:
1640: /**
1641: * htmlParseHTMLAttribute:
1642: * @ctxt: an HTML parser context
1.19 daniel 1643: * @stop: a char stop value
1.1 daniel 1644: *
1.19 daniel 1645: * parse an HTML attribute value till the stop (quote), if
1646: * stop is 0 then it stops at the first space
1.1 daniel 1647: *
1.19 daniel 1648: * Returns the attribute parsed or NULL
1.1 daniel 1649: */
1650:
1.14 daniel 1651: xmlChar *
1.19 daniel 1652: htmlParseHTMLAttribute(htmlParserCtxtPtr ctxt, const xmlChar stop) {
1.32 daniel 1653: #if 0
1.14 daniel 1654: xmlChar buf[HTML_MAX_NAMELEN];
1.5 daniel 1655: int len = 0;
1.1 daniel 1656:
1.5 daniel 1657: GROW;
1.19 daniel 1658: while ((CUR != 0) && (CUR != stop) && (CUR != '>')) {
1659: if ((stop == 0) && (IS_BLANK(CUR))) break;
1.5 daniel 1660: buf[len++] = CUR;
1.1 daniel 1661: NEXT;
1.5 daniel 1662: if (len >= HTML_MAX_NAMELEN) {
1663: fprintf(stderr,
1664: "htmlParseHTMLAttribute: reached HTML_MAX_NAMELEN limit\n");
1665: while ((!IS_BLANK(CUR)) && (CUR != '<') &&
1.19 daniel 1666: (CUR != '>') &&
1.5 daniel 1667: (CUR != '\'') && (CUR != '"'))
1668: NEXT;
1669: break;
1670: }
1671: }
1672: return(xmlStrndup(buf, len));
1.32 daniel 1673: #else
1674: xmlChar *buffer = NULL;
1675: int buffer_size = 0;
1676: xmlChar *out = NULL;
1677: xmlChar *name = NULL;
1678:
1679: xmlChar *cur = NULL;
1680: htmlEntityDescPtr ent;
1681:
1682: /*
1683: * allocate a translation buffer.
1684: */
1685: buffer_size = HTML_PARSER_BIG_BUFFER_SIZE;
1686: buffer = (xmlChar *) xmlMalloc(buffer_size * sizeof(xmlChar));
1687: if (buffer == NULL) {
1688: perror("htmlParseHTMLAttribute: malloc failed");
1689: return(NULL);
1690: }
1691: out = buffer;
1692:
1693: /*
1694: * Ok loop until we reach one of the ending chars
1695: */
1696: while ((CUR != 0) && (CUR != stop) && (CUR != '>')) {
1697: if ((stop == 0) && (IS_BLANK(CUR))) break;
1698: if (CUR == '&') {
1699: if (NXT(1) == '#') {
1.52 veillard 1700: unsigned int c;
1701: int bits;
1702:
1703: c = htmlParseCharRef(ctxt);
1704: if (c < 0x80)
1705: { *out++ = c; bits= -6; }
1706: else if (c < 0x800)
1707: { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; }
1708: else if (c < 0x10000)
1709: { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; }
1710: else
1711: { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; }
1712:
1713: for ( ; bits >= 0; bits-= 6) {
1714: *out++ = ((c >> bits) & 0x3F) | 0x80;
1715: }
1.32 daniel 1716: } else {
1717: ent = htmlParseEntityRef(ctxt, &name);
1718: if (name == NULL) {
1719: *out++ = '&';
1720: if (out - buffer > buffer_size - 100) {
1721: int index = out - buffer;
1722:
1723: growBuffer(buffer);
1724: out = &buffer[index];
1725: }
1.52 veillard 1726: } else if (ent == NULL) {
1.32 daniel 1727: *out++ = '&';
1728: cur = name;
1729: while (*cur != 0) {
1730: if (out - buffer > buffer_size - 100) {
1731: int index = out - buffer;
1732:
1733: growBuffer(buffer);
1734: out = &buffer[index];
1735: }
1736: *out++ = *cur++;
1737: }
1738: xmlFree(name);
1739: } else {
1.52 veillard 1740: unsigned int c;
1741: int bits;
1742:
1.32 daniel 1743: if (out - buffer > buffer_size - 100) {
1744: int index = out - buffer;
1745:
1746: growBuffer(buffer);
1747: out = &buffer[index];
1748: }
1.52 veillard 1749: c = (xmlChar)ent->value;
1750: if (c < 0x80)
1751: { *out++ = c; bits= -6; }
1752: else if (c < 0x800)
1753: { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; }
1754: else if (c < 0x10000)
1755: { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; }
1756: else
1757: { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; }
1758:
1759: for ( ; bits >= 0; bits-= 6) {
1760: *out++ = ((c >> bits) & 0x3F) | 0x80;
1761: }
1.32 daniel 1762: xmlFree(name);
1763: }
1764: }
1765: } else {
1.52 veillard 1766: unsigned int c;
1767: int bits;
1768:
1.32 daniel 1769: if (out - buffer > buffer_size - 100) {
1.52 veillard 1770: int index = out - buffer;
1771:
1772: growBuffer(buffer);
1773: out = &buffer[index];
1774: }
1775: c = CUR;
1776: if (c < 0x80)
1777: { *out++ = c; bits= -6; }
1778: else if (c < 0x800)
1779: { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; }
1780: else if (c < 0x10000)
1781: { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; }
1782: else
1783: { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; }
1784:
1785: for ( ; bits >= 0; bits-= 6) {
1786: *out++ = ((c >> bits) & 0x3F) | 0x80;
1.32 daniel 1787: }
1788: NEXT;
1789: }
1790: }
1791: *out++ = 0;
1792: return(buffer);
1793: #endif
1.1 daniel 1794: }
1795:
1796: /**
1797: * htmlParseNmtoken:
1798: * @ctxt: an HTML parser context
1799: *
1800: * parse an HTML Nmtoken.
1801: *
1802: * Returns the Nmtoken parsed or NULL
1803: */
1804:
1.14 daniel 1805: xmlChar *
1.1 daniel 1806: htmlParseNmtoken(htmlParserCtxtPtr ctxt) {
1.14 daniel 1807: xmlChar buf[HTML_MAX_NAMELEN];
1.5 daniel 1808: int len = 0;
1.1 daniel 1809:
1.5 daniel 1810: GROW;
1.1 daniel 1811: while ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) ||
1812: (CUR == '.') || (CUR == '-') ||
1813: (CUR == '_') || (CUR == ':') ||
1814: (IS_COMBINING(CUR)) ||
1.5 daniel 1815: (IS_EXTENDER(CUR))) {
1816: buf[len++] = CUR;
1.1 daniel 1817: NEXT;
1.5 daniel 1818: if (len >= HTML_MAX_NAMELEN) {
1819: fprintf(stderr,
1820: "htmlParseNmtoken: reached HTML_MAX_NAMELEN limit\n");
1821: while ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) ||
1822: (CUR == '.') || (CUR == '-') ||
1823: (CUR == '_') || (CUR == ':') ||
1824: (IS_COMBINING(CUR)) ||
1825: (IS_EXTENDER(CUR)))
1826: NEXT;
1827: break;
1828: }
1829: }
1830: return(xmlStrndup(buf, len));
1.1 daniel 1831: }
1832:
1833: /**
1834: * htmlParseEntityRef:
1835: * @ctxt: an HTML parser context
1836: * @str: location to store the entity name
1837: *
1838: * parse an HTML ENTITY references
1839: *
1840: * [68] EntityRef ::= '&' Name ';'
1841: *
1842: * Returns the associated htmlEntityDescPtr if found, or NULL otherwise,
1843: * if non-NULL *str will have to be freed by the caller.
1844: */
1845: htmlEntityDescPtr
1.14 daniel 1846: htmlParseEntityRef(htmlParserCtxtPtr ctxt, xmlChar **str) {
1847: xmlChar *name;
1.1 daniel 1848: htmlEntityDescPtr ent = NULL;
1849: *str = NULL;
1850:
1851: if (CUR == '&') {
1852: NEXT;
1853: name = htmlParseName(ctxt);
1854: if (name == NULL) {
1855: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1856: ctxt->sax->error(ctxt->userData, "htmlParseEntityRef: no name\n");
1857: ctxt->wellFormed = 0;
1858: } else {
1.5 daniel 1859: GROW;
1.1 daniel 1860: if (CUR == ';') {
1861: *str = name;
1862:
1863: /*
1864: * Lookup the entity in the table.
1865: */
1866: ent = htmlEntityLookup(name);
1.32 daniel 1867: if (ent != NULL) /* OK that's ugly !!! */
1868: NEXT;
1.1 daniel 1869: } else {
1870: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1871: ctxt->sax->error(ctxt->userData,
1872: "htmlParseEntityRef: expecting ';'\n");
1.32 daniel 1873: *str = name;
1.1 daniel 1874: }
1875: }
1876: }
1877: return(ent);
1878: }
1879:
1880: /**
1881: * htmlParseAttValue:
1882: * @ctxt: an HTML parser context
1883: *
1884: * parse a value for an attribute
1885: * Note: the parser won't do substitution of entities here, this
1886: * will be handled later in xmlStringGetNodeList, unless it was
1887: * asked for ctxt->replaceEntities != 0
1888: *
1889: * Returns the AttValue parsed or NULL.
1890: */
1891:
1.14 daniel 1892: xmlChar *
1.1 daniel 1893: htmlParseAttValue(htmlParserCtxtPtr ctxt) {
1.14 daniel 1894: xmlChar *ret = NULL;
1.1 daniel 1895:
1896: if (CUR == '"') {
1897: NEXT;
1.19 daniel 1898: ret = htmlParseHTMLAttribute(ctxt, '"');
1.1 daniel 1899: if (CUR != '"') {
1900: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1901: ctxt->sax->error(ctxt->userData, "AttValue: ' expected\n");
1902: ctxt->wellFormed = 0;
1903: } else
1904: NEXT;
1905: } else if (CUR == '\'') {
1906: NEXT;
1.19 daniel 1907: ret = htmlParseHTMLAttribute(ctxt, '\'');
1.1 daniel 1908: if (CUR != '\'') {
1909: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1910: ctxt->sax->error(ctxt->userData, "AttValue: ' expected\n");
1911: ctxt->wellFormed = 0;
1912: } else
1913: NEXT;
1914: } else {
1915: /*
1916: * That's an HTMLism, the attribute value may not be quoted
1917: */
1.19 daniel 1918: ret = htmlParseHTMLAttribute(ctxt, 0);
1.1 daniel 1919: if (ret == NULL) {
1920: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1921: ctxt->sax->error(ctxt->userData, "AttValue: no value found\n");
1922: ctxt->wellFormed = 0;
1923: }
1924: }
1925: return(ret);
1926: }
1927:
1928: /**
1929: * htmlParseSystemLiteral:
1930: * @ctxt: an HTML parser context
1931: *
1932: * parse an HTML Literal
1933: *
1934: * [11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'")
1935: *
1936: * Returns the SystemLiteral parsed or NULL
1937: */
1938:
1.14 daniel 1939: xmlChar *
1.1 daniel 1940: htmlParseSystemLiteral(htmlParserCtxtPtr ctxt) {
1.14 daniel 1941: const xmlChar *q;
1942: xmlChar *ret = NULL;
1.1 daniel 1943:
1944: if (CUR == '"') {
1945: NEXT;
1946: q = CUR_PTR;
1947: while ((IS_CHAR(CUR)) && (CUR != '"'))
1948: NEXT;
1949: if (!IS_CHAR(CUR)) {
1950: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1951: ctxt->sax->error(ctxt->userData, "Unfinished SystemLiteral\n");
1952: ctxt->wellFormed = 0;
1953: } else {
1954: ret = xmlStrndup(q, CUR_PTR - q);
1955: NEXT;
1956: }
1957: } else if (CUR == '\'') {
1958: NEXT;
1959: q = CUR_PTR;
1960: while ((IS_CHAR(CUR)) && (CUR != '\''))
1961: NEXT;
1962: if (!IS_CHAR(CUR)) {
1963: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1964: ctxt->sax->error(ctxt->userData, "Unfinished SystemLiteral\n");
1965: ctxt->wellFormed = 0;
1966: } else {
1967: ret = xmlStrndup(q, CUR_PTR - q);
1968: NEXT;
1969: }
1970: } else {
1971: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1.38 daniel 1972: ctxt->sax->error(ctxt->userData,
1973: "SystemLiteral \" or ' expected\n");
1.1 daniel 1974: ctxt->wellFormed = 0;
1975: }
1976:
1977: return(ret);
1978: }
1979:
1980: /**
1981: * htmlParsePubidLiteral:
1982: * @ctxt: an HTML parser context
1983: *
1984: * parse an HTML public literal
1985: *
1986: * [12] PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'"
1987: *
1988: * Returns the PubidLiteral parsed or NULL.
1989: */
1990:
1.14 daniel 1991: xmlChar *
1.1 daniel 1992: htmlParsePubidLiteral(htmlParserCtxtPtr ctxt) {
1.14 daniel 1993: const xmlChar *q;
1994: xmlChar *ret = NULL;
1.1 daniel 1995: /*
1996: * Name ::= (Letter | '_') (NameChar)*
1997: */
1998: if (CUR == '"') {
1999: NEXT;
2000: q = CUR_PTR;
2001: while (IS_PUBIDCHAR(CUR)) NEXT;
2002: if (CUR != '"') {
2003: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2004: ctxt->sax->error(ctxt->userData, "Unfinished PubidLiteral\n");
2005: ctxt->wellFormed = 0;
2006: } else {
2007: ret = xmlStrndup(q, CUR_PTR - q);
2008: NEXT;
2009: }
2010: } else if (CUR == '\'') {
2011: NEXT;
2012: q = CUR_PTR;
2013: while ((IS_LETTER(CUR)) && (CUR != '\''))
2014: NEXT;
2015: if (!IS_LETTER(CUR)) {
2016: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2017: ctxt->sax->error(ctxt->userData, "Unfinished PubidLiteral\n");
2018: ctxt->wellFormed = 0;
2019: } else {
2020: ret = xmlStrndup(q, CUR_PTR - q);
2021: NEXT;
2022: }
2023: } else {
2024: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2025: ctxt->sax->error(ctxt->userData, "SystemLiteral \" or ' expected\n");
2026: ctxt->wellFormed = 0;
2027: }
2028:
2029: return(ret);
2030: }
2031:
2032: /**
2033: * htmlParseCharData:
2034: * @ctxt: an HTML parser context
2035: * @cdata: int indicating whether we are within a CDATA section
2036: *
2037: * parse a CharData section.
2038: * if we are within a CDATA section ']]>' marks an end of section.
2039: *
2040: * [14] CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*)
2041: */
2042:
2043: void
2044: htmlParseCharData(htmlParserCtxtPtr ctxt, int cdata) {
1.53 veillard 2045: xmlChar buf[HTML_PARSER_BIG_BUFFER_SIZE + 5];
2046: int nbchar = 0;
2047: int cur, l;
2048:
2049: SHRINK;
2050: cur = CUR_CHAR(l);
2051: while (((cur != '<') || (ctxt->token == '<')) &&
2052: ((cur != '&') || (ctxt->token == '&')) &&
2053: (IS_CHAR(cur))) {
2054: COPY_BUF(l,buf,nbchar,cur);
2055: if (nbchar >= HTML_PARSER_BIG_BUFFER_SIZE) {
2056: /*
2057: * Ok the segment is to be consumed as chars.
2058: */
2059: if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
2060: if (areBlanks(ctxt, buf, nbchar)) {
2061: if (ctxt->sax->ignorableWhitespace != NULL)
2062: ctxt->sax->ignorableWhitespace(ctxt->userData,
2063: buf, nbchar);
2064: } else {
2065: if (ctxt->sax->characters != NULL)
2066: ctxt->sax->characters(ctxt->userData, buf, nbchar);
2067: }
1.1 daniel 2068: }
1.53 veillard 2069: nbchar = 0;
1.1 daniel 2070: }
1.53 veillard 2071: NEXTL(l);
2072: cur = CUR_CHAR(l);
2073: }
2074: if (nbchar != 0) {
2075: /*
2076: * Ok the segment is to be consumed as chars.
2077: */
2078: if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
2079: if (areBlanks(ctxt, buf, nbchar)) {
2080: if (ctxt->sax->ignorableWhitespace != NULL)
2081: ctxt->sax->ignorableWhitespace(ctxt->userData, buf, nbchar);
2082: } else {
2083: if (ctxt->sax->characters != NULL)
2084: ctxt->sax->characters(ctxt->userData, buf, nbchar);
1.25 daniel 2085: }
2086: }
1.1 daniel 2087: }
2088: }
2089:
2090: /**
2091: * htmlParseExternalID:
2092: * @ctxt: an HTML parser context
1.14 daniel 2093: * @publicID: a xmlChar** receiving PubidLiteral
1.1 daniel 2094: * @strict: indicate whether we should restrict parsing to only
2095: * production [75], see NOTE below
2096: *
2097: * Parse an External ID or a Public ID
2098: *
2099: * NOTE: Productions [75] and [83] interract badly since [75] can generate
2100: * 'PUBLIC' S PubidLiteral S SystemLiteral
2101: *
2102: * [75] ExternalID ::= 'SYSTEM' S SystemLiteral
2103: * | 'PUBLIC' S PubidLiteral S SystemLiteral
2104: *
2105: * [83] PublicID ::= 'PUBLIC' S PubidLiteral
2106: *
2107: * Returns the function returns SystemLiteral and in the second
2108: * case publicID receives PubidLiteral, is strict is off
2109: * it is possible to return NULL and have publicID set.
2110: */
2111:
1.14 daniel 2112: xmlChar *
2113: htmlParseExternalID(htmlParserCtxtPtr ctxt, xmlChar **publicID, int strict) {
2114: xmlChar *URI = NULL;
1.1 daniel 2115:
2116: if ((UPPER == 'S') && (UPP(1) == 'Y') &&
2117: (UPP(2) == 'S') && (UPP(3) == 'T') &&
2118: (UPP(4) == 'E') && (UPP(5) == 'M')) {
2119: SKIP(6);
2120: if (!IS_BLANK(CUR)) {
2121: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2122: ctxt->sax->error(ctxt->userData,
2123: "Space required after 'SYSTEM'\n");
2124: ctxt->wellFormed = 0;
2125: }
2126: SKIP_BLANKS;
2127: URI = htmlParseSystemLiteral(ctxt);
2128: if (URI == NULL) {
2129: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2130: ctxt->sax->error(ctxt->userData,
2131: "htmlParseExternalID: SYSTEM, no URI\n");
2132: ctxt->wellFormed = 0;
2133: }
2134: } else if ((UPPER == 'P') && (UPP(1) == 'U') &&
2135: (UPP(2) == 'B') && (UPP(3) == 'L') &&
2136: (UPP(4) == 'I') && (UPP(5) == 'C')) {
2137: SKIP(6);
2138: if (!IS_BLANK(CUR)) {
2139: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2140: ctxt->sax->error(ctxt->userData,
2141: "Space required after 'PUBLIC'\n");
2142: ctxt->wellFormed = 0;
2143: }
2144: SKIP_BLANKS;
2145: *publicID = htmlParsePubidLiteral(ctxt);
2146: if (*publicID == NULL) {
2147: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2148: ctxt->sax->error(ctxt->userData,
2149: "htmlParseExternalID: PUBLIC, no Public Identifier\n");
2150: ctxt->wellFormed = 0;
2151: }
1.5 daniel 2152: SKIP_BLANKS;
2153: if ((CUR == '"') || (CUR == '\'')) {
2154: URI = htmlParseSystemLiteral(ctxt);
1.1 daniel 2155: }
2156: }
2157: return(URI);
2158: }
2159:
2160: /**
2161: * htmlParseComment:
2162: * @ctxt: an HTML parser context
2163: *
2164: * Parse an XML (SGML) comment <!-- .... -->
2165: *
2166: * [15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
2167: */
2168: void
1.31 daniel 2169: htmlParseComment(htmlParserCtxtPtr ctxt) {
1.25 daniel 2170: xmlChar *buf = NULL;
1.56 veillard 2171: int len;
1.31 daniel 2172: int size = HTML_PARSER_BUFFER_SIZE;
1.56 veillard 2173: int q, ql;
2174: int r, rl;
2175: int cur, l;
2176: xmlParserInputState state;
1.1 daniel 2177:
2178: /*
2179: * Check that there is a comment right here.
2180: */
1.56 veillard 2181: if ((RAW != '<') || (NXT(1) != '!') ||
1.1 daniel 2182: (NXT(2) != '-') || (NXT(3) != '-')) return;
2183:
1.56 veillard 2184: state = ctxt->instate;
2185: ctxt->instate = XML_PARSER_COMMENT;
2186: SHRINK;
2187: SKIP(4);
1.25 daniel 2188: buf = (xmlChar *) xmlMalloc(size * sizeof(xmlChar));
2189: if (buf == NULL) {
2190: fprintf(stderr, "malloc of %d byte failed\n", size);
1.56 veillard 2191: ctxt->instate = state;
1.25 daniel 2192: return;
2193: }
1.56 veillard 2194: q = CUR_CHAR(ql);
2195: NEXTL(ql);
2196: r = CUR_CHAR(rl);
2197: NEXTL(rl);
2198: cur = CUR_CHAR(l);
2199: len = 0;
2200: while (IS_CHAR(cur) &&
2201: ((cur != '>') ||
2202: (r != '-') || (q != '-'))) {
2203: if (len + 5 >= size) {
1.25 daniel 2204: size *= 2;
1.50 veillard 2205: buf = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar));
1.25 daniel 2206: if (buf == NULL) {
2207: fprintf(stderr, "realloc of %d byte failed\n", size);
1.56 veillard 2208: ctxt->instate = state;
1.25 daniel 2209: return;
2210: }
2211: }
1.56 veillard 2212: COPY_BUF(ql,buf,len,q);
1.25 daniel 2213: q = r;
1.56 veillard 2214: ql = rl;
2215: r = cur;
2216: rl = l;
2217: NEXTL(l);
2218: cur = CUR_CHAR(l);
2219: if (cur == 0) {
2220: SHRINK;
2221: GROW;
2222: cur = CUR_CHAR(l);
2223: }
1.1 daniel 2224: }
1.56 veillard 2225: buf[len] = 0;
2226: if (!IS_CHAR(cur)) {
1.1 daniel 2227: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1.56 veillard 2228: ctxt->sax->error(ctxt->userData,
2229: "Comment not terminated \n<!--%.50s\n", buf);
2230: ctxt->errNo = XML_ERR_COMMENT_NOT_FINISHED;
1.1 daniel 2231: ctxt->wellFormed = 0;
1.56 veillard 2232: xmlFree(buf);
1.1 daniel 2233: } else {
2234: NEXT;
1.56 veillard 2235: if ((ctxt->sax != NULL) && (ctxt->sax->comment != NULL) &&
2236: (!ctxt->disableSAX))
1.31 daniel 2237: ctxt->sax->comment(ctxt->userData, buf);
1.56 veillard 2238: xmlFree(buf);
1.1 daniel 2239: }
1.56 veillard 2240: ctxt->instate = state;
1.1 daniel 2241: }
2242:
2243: /**
2244: * htmlParseCharRef:
2245: * @ctxt: an HTML parser context
2246: *
2247: * parse Reference declarations
2248: *
2249: * [66] CharRef ::= '&#' [0-9]+ ';' |
2250: * '&#x' [0-9a-fA-F]+ ';'
2251: *
2252: * Returns the value parsed (as an int)
2253: */
2254: int
2255: htmlParseCharRef(htmlParserCtxtPtr ctxt) {
2256: int val = 0;
2257:
2258: if ((CUR == '&') && (NXT(1) == '#') &&
2259: (NXT(2) == 'x')) {
2260: SKIP(3);
2261: while (CUR != ';') {
2262: if ((CUR >= '0') && (CUR <= '9'))
2263: val = val * 16 + (CUR - '0');
2264: else if ((CUR >= 'a') && (CUR <= 'f'))
2265: val = val * 16 + (CUR - 'a') + 10;
2266: else if ((CUR >= 'A') && (CUR <= 'F'))
2267: val = val * 16 + (CUR - 'A') + 10;
2268: else {
2269: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2270: ctxt->sax->error(ctxt->userData,
2271: "htmlParseCharRef: invalid hexadecimal value\n");
2272: ctxt->wellFormed = 0;
2273: val = 0;
2274: break;
2275: }
2276: NEXT;
2277: }
2278: if (CUR == ';')
2279: NEXT;
2280: } else if ((CUR == '&') && (NXT(1) == '#')) {
2281: SKIP(2);
2282: while (CUR != ';') {
2283: if ((CUR >= '0') && (CUR <= '9'))
2284: val = val * 10 + (CUR - '0');
2285: else {
2286: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2287: ctxt->sax->error(ctxt->userData,
2288: "htmlParseCharRef: invalid decimal value\n");
2289: ctxt->wellFormed = 0;
2290: val = 0;
2291: break;
2292: }
2293: NEXT;
2294: }
2295: if (CUR == ';')
2296: NEXT;
2297: } else {
2298: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2299: ctxt->sax->error(ctxt->userData, "htmlParseCharRef: invalid value\n");
2300: ctxt->wellFormed = 0;
2301: }
2302: /*
2303: * Check the value IS_CHAR ...
2304: */
2305: if (IS_CHAR(val)) {
2306: return(val);
2307: } else {
2308: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1.14 daniel 2309: ctxt->sax->error(ctxt->userData, "htmlParseCharRef: invalid xmlChar value %d\n",
1.1 daniel 2310: val);
2311: ctxt->wellFormed = 0;
2312: }
2313: return(0);
2314: }
2315:
2316:
2317: /**
2318: * htmlParseDocTypeDecl :
2319: * @ctxt: an HTML parser context
2320: *
2321: * parse a DOCTYPE declaration
2322: *
2323: * [28] doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S?
2324: * ('[' (markupdecl | PEReference | S)* ']' S?)? '>'
2325: */
2326:
2327: void
2328: htmlParseDocTypeDecl(htmlParserCtxtPtr ctxt) {
1.14 daniel 2329: xmlChar *name;
2330: xmlChar *ExternalID = NULL;
2331: xmlChar *URI = NULL;
1.1 daniel 2332:
2333: /*
2334: * We know that '<!DOCTYPE' has been detected.
2335: */
2336: SKIP(9);
2337:
2338: SKIP_BLANKS;
2339:
2340: /*
2341: * Parse the DOCTYPE name.
2342: */
2343: name = htmlParseName(ctxt);
2344: if (name == NULL) {
2345: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2346: ctxt->sax->error(ctxt->userData, "htmlParseDocTypeDecl : no DOCTYPE name !\n");
2347: ctxt->wellFormed = 0;
2348: }
2349: /*
2350: * Check that upper(name) == "HTML" !!!!!!!!!!!!!
2351: */
2352:
2353: SKIP_BLANKS;
2354:
2355: /*
2356: * Check for SystemID and ExternalID
2357: */
1.5 daniel 2358: URI = htmlParseExternalID(ctxt, &ExternalID, 0);
1.1 daniel 2359: SKIP_BLANKS;
2360:
2361: /*
2362: * We should be at the end of the DOCTYPE declaration.
2363: */
2364: if (CUR != '>') {
2365: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2366: ctxt->sax->error(ctxt->userData, "DOCTYPE unproperly terminated\n");
2367: ctxt->wellFormed = 0;
2368: /* We shouldn't try to resynchronize ... */
2369: }
2370: NEXT;
2371:
2372: /*
1.46 daniel 2373: * Create or update the document accordingly to the DOCTYPE
1.1 daniel 2374: */
1.46 daniel 2375: if ((ctxt->sax != NULL) && (ctxt->sax->internalSubset != NULL) &&
2376: (!ctxt->disableSAX))
2377: ctxt->sax->internalSubset(ctxt->userData, name, ExternalID, URI);
1.1 daniel 2378:
2379: /*
2380: * Cleanup, since we don't use all those identifiers
2381: */
1.11 daniel 2382: if (URI != NULL) xmlFree(URI);
2383: if (ExternalID != NULL) xmlFree(ExternalID);
2384: if (name != NULL) xmlFree(name);
1.1 daniel 2385: }
2386:
2387: /**
2388: * htmlParseAttribute:
2389: * @ctxt: an HTML parser context
1.14 daniel 2390: * @value: a xmlChar ** used to store the value of the attribute
1.1 daniel 2391: *
2392: * parse an attribute
2393: *
2394: * [41] Attribute ::= Name Eq AttValue
2395: *
2396: * [25] Eq ::= S? '=' S?
2397: *
2398: * With namespace:
2399: *
2400: * [NS 11] Attribute ::= QName Eq AttValue
2401: *
2402: * Also the case QName == xmlns:??? is handled independently as a namespace
2403: * definition.
2404: *
2405: * Returns the attribute name, and the value in *value.
2406: */
2407:
1.14 daniel 2408: xmlChar *
2409: htmlParseAttribute(htmlParserCtxtPtr ctxt, xmlChar **value) {
1.31 daniel 2410: xmlChar *name, *val = NULL;
1.1 daniel 2411:
2412: *value = NULL;
2413: name = htmlParseName(ctxt);
2414: if (name == NULL) {
2415: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2416: ctxt->sax->error(ctxt->userData, "error parsing attribute name\n");
2417: ctxt->wellFormed = 0;
2418: return(NULL);
2419: }
2420:
2421: /*
2422: * read the value
2423: */
2424: SKIP_BLANKS;
2425: if (CUR == '=') {
2426: NEXT;
2427: SKIP_BLANKS;
2428: val = htmlParseAttValue(ctxt);
1.42 daniel 2429: /******
1.1 daniel 2430: } else {
1.42 daniel 2431: * TODO : some attribute must have values, some may not
1.1 daniel 2432: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1.31 daniel 2433: ctxt->sax->warning(ctxt->userData,
1.42 daniel 2434: "No value for attribute %s\n", name); */
1.1 daniel 2435: }
2436:
2437: *value = val;
2438: return(name);
2439: }
2440:
2441: /**
1.47 daniel 2442: * htmlCheckEncoding:
2443: * @ctxt: an HTML parser context
2444: * @attvalue: the attribute value
2445: *
2446: * Checks an http-equiv attribute from a Meta tag to detect
2447: * the encoding
2448: * If a new encoding is detected the parser is switched to decode
2449: * it and pass UTF8
2450: */
2451: void
2452: htmlCheckEncoding(htmlParserCtxtPtr ctxt, const xmlChar *attvalue) {
2453: const xmlChar *encoding;
2454:
2455: if ((ctxt == NULL) || (attvalue == NULL))
2456: return;
2457:
2458: encoding = xmlStrstr(attvalue, BAD_CAST"charset=");
2459: if (encoding == NULL)
2460: encoding = xmlStrstr(attvalue, BAD_CAST"Charset=");
2461: if (encoding == NULL)
2462: encoding = xmlStrstr(attvalue, BAD_CAST"CHARSET=");
2463: if (encoding != NULL) {
2464: encoding += 8;
2465: } else {
2466: encoding = xmlStrstr(attvalue, BAD_CAST"charset =");
2467: if (encoding == NULL)
2468: encoding = xmlStrstr(attvalue, BAD_CAST"Charset =");
2469: if (encoding == NULL)
2470: encoding = xmlStrstr(attvalue, BAD_CAST"CHARSET =");
2471: if (encoding != NULL)
2472: encoding += 9;
2473: }
2474: if (encoding != NULL) {
2475: xmlCharEncoding enc;
2476: xmlCharEncodingHandlerPtr handler;
2477:
2478: while ((*encoding == ' ') || (*encoding == '\t')) encoding++;
2479:
2480: if (ctxt->input->encoding != NULL)
2481: xmlFree((xmlChar *) ctxt->input->encoding);
2482: ctxt->input->encoding = xmlStrdup(encoding);
2483:
2484: enc = xmlParseCharEncoding((const char *) encoding);
2485: /*
2486: * registered set of known encodings
2487: */
2488: if (enc != XML_CHAR_ENCODING_ERROR) {
2489: xmlSwitchEncoding(ctxt, enc);
1.53 veillard 2490: ctxt->charset = XML_CHAR_ENCODING_UTF8;
1.47 daniel 2491: } else {
2492: /*
2493: * fallback for unknown encodings
2494: */
2495: handler = xmlFindCharEncodingHandler((const char *) encoding);
2496: if (handler != NULL) {
2497: xmlSwitchToEncoding(ctxt, handler);
1.54 veillard 2498: ctxt->charset = XML_CHAR_ENCODING_UTF8;
1.47 daniel 2499: } else {
2500: ctxt->errNo = XML_ERR_UNSUPPORTED_ENCODING;
2501: }
2502: }
1.54 veillard 2503:
2504: if ((ctxt->input->buf != NULL) &&
2505: (ctxt->input->buf->encoder != NULL) &&
2506: (ctxt->input->buf->raw != NULL) &&
2507: (ctxt->input->buf->buffer != NULL)) {
2508: int nbchars;
1.56 veillard 2509: int processed;
1.54 veillard 2510:
2511: /*
2512: * convert as much as possible to the parser reading buffer.
2513: */
1.56 veillard 2514: processed = ctxt->input->cur - ctxt->input->base;
2515: xmlBufferShrink(ctxt->input->buf->buffer, processed);
1.54 veillard 2516: nbchars = xmlCharEncInFunc(ctxt->input->buf->encoder,
2517: ctxt->input->buf->buffer,
2518: ctxt->input->buf->raw);
2519: if (nbchars < 0) {
2520: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2521: ctxt->sax->error(ctxt->userData,
2522: "htmlCheckEncoding: encoder error\n");
2523: ctxt->errNo = XML_ERR_INVALID_ENCODING;
2524: }
1.56 veillard 2525: ctxt->input->base =
2526: ctxt->input->cur = ctxt->input->buf->buffer->content;
1.54 veillard 2527: }
1.47 daniel 2528: }
2529: }
2530:
2531: /**
2532: * htmlCheckMeta:
2533: * @ctxt: an HTML parser context
2534: * @atts: the attributes values
2535: *
2536: * Checks an attributes from a Meta tag
2537: */
2538: void
2539: htmlCheckMeta(htmlParserCtxtPtr ctxt, const xmlChar **atts) {
2540: int i;
2541: const xmlChar *att, *value;
2542: int http = 0;
2543: const xmlChar *content = NULL;
2544:
2545: if ((ctxt == NULL) || (atts == NULL))
2546: return;
2547:
2548: i = 0;
2549: att = atts[i++];
2550: while (att != NULL) {
2551: value = atts[i++];
2552: if ((value != NULL) &&
2553: ((!xmlStrcmp(att, BAD_CAST"http-equiv")) ||
2554: (!xmlStrcmp(att, BAD_CAST"Http-Equiv")) ||
2555: (!xmlStrcmp(att, BAD_CAST"HTTP-EQUIV"))) &&
2556: ((!xmlStrcmp(value, BAD_CAST"Content-Type")) ||
2557: (!xmlStrcmp(value, BAD_CAST"content-type")) ||
2558: (!xmlStrcmp(value, BAD_CAST"CONTENT-TYPE"))))
2559: http = 1;
2560: else if ((value != NULL) &&
2561: ((!xmlStrcmp(att, BAD_CAST"content")) ||
2562: (!xmlStrcmp(att, BAD_CAST"Content")) ||
2563: (!xmlStrcmp(att, BAD_CAST"CONTENT"))))
2564: content = value;
2565: att = atts[i++];
2566: }
2567: if ((http) && (content != NULL))
2568: htmlCheckEncoding(ctxt, content);
2569:
2570: }
2571:
2572: /**
1.1 daniel 2573: * htmlParseStartTag:
2574: * @ctxt: an HTML parser context
2575: *
2576: * parse a start of tag either for rule element or
2577: * EmptyElement. In both case we don't parse the tag closing chars.
2578: *
2579: * [40] STag ::= '<' Name (S Attribute)* S? '>'
2580: *
2581: * [44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>'
2582: *
2583: * With namespace:
2584: *
2585: * [NS 8] STag ::= '<' QName (S Attribute)* S? '>'
2586: *
2587: * [NS 10] EmptyElement ::= '<' QName (S Attribute)* S? '/>'
2588: *
2589: */
2590:
1.18 daniel 2591: void
1.1 daniel 2592: htmlParseStartTag(htmlParserCtxtPtr ctxt) {
1.14 daniel 2593: xmlChar *name;
2594: xmlChar *attname;
2595: xmlChar *attvalue;
2596: const xmlChar **atts = NULL;
1.1 daniel 2597: int nbatts = 0;
2598: int maxatts = 0;
1.47 daniel 2599: int meta = 0;
1.1 daniel 2600: int i;
2601:
1.18 daniel 2602: if (CUR != '<') return;
1.1 daniel 2603: NEXT;
2604:
1.19 daniel 2605: GROW;
1.1 daniel 2606: name = htmlParseHTMLName(ctxt);
2607: if (name == NULL) {
2608: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2609: ctxt->sax->error(ctxt->userData,
2610: "htmlParseStartTag: invalid element name\n");
2611: ctxt->wellFormed = 0;
1.18 daniel 2612: return;
1.1 daniel 2613: }
1.47 daniel 2614: if (!xmlStrcmp(name, BAD_CAST"meta"))
2615: meta = 1;
1.1 daniel 2616:
2617: /*
2618: * Check for auto-closure of HTML elements.
2619: */
2620: htmlAutoClose(ctxt, name);
1.43 daniel 2621:
2622: /*
2623: * Check for implied HTML elements.
2624: */
2625: htmlCheckImplied(ctxt, name);
1.1 daniel 2626:
2627: /*
2628: * Now parse the attributes, it ends up with the ending
2629: *
2630: * (S Attribute)* S?
2631: */
2632: SKIP_BLANKS;
2633: while ((IS_CHAR(CUR)) &&
2634: (CUR != '>') &&
2635: ((CUR != '/') || (NXT(1) != '>'))) {
1.26 daniel 2636: long cons = ctxt->nbChars;
1.1 daniel 2637:
1.19 daniel 2638: GROW;
1.1 daniel 2639: attname = htmlParseAttribute(ctxt, &attvalue);
1.31 daniel 2640: if (attname != NULL) {
1.47 daniel 2641:
1.1 daniel 2642: /*
2643: * Well formedness requires at most one declaration of an attribute
2644: */
2645: for (i = 0; i < nbatts;i += 2) {
2646: if (!xmlStrcmp(atts[i], attname)) {
2647: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1.19 daniel 2648: ctxt->sax->error(ctxt->userData,
2649: "Attribute %s redefined\n",
2650: attname);
1.1 daniel 2651: ctxt->wellFormed = 0;
1.11 daniel 2652: xmlFree(attname);
1.31 daniel 2653: if (attvalue != NULL)
2654: xmlFree(attvalue);
1.19 daniel 2655: goto failed;
1.1 daniel 2656: }
2657: }
2658:
2659: /*
2660: * Add the pair to atts
2661: */
2662: if (atts == NULL) {
2663: maxatts = 10;
1.14 daniel 2664: atts = (const xmlChar **) xmlMalloc(maxatts * sizeof(xmlChar *));
1.1 daniel 2665: if (atts == NULL) {
2666: fprintf(stderr, "malloc of %ld byte failed\n",
1.14 daniel 2667: maxatts * (long)sizeof(xmlChar *));
1.18 daniel 2668: if (name != NULL) xmlFree(name);
2669: return;
1.1 daniel 2670: }
1.23 daniel 2671: } else if (nbatts + 4 > maxatts) {
1.1 daniel 2672: maxatts *= 2;
1.14 daniel 2673: atts = (const xmlChar **) xmlRealloc(atts, maxatts * sizeof(xmlChar *));
1.1 daniel 2674: if (atts == NULL) {
2675: fprintf(stderr, "realloc of %ld byte failed\n",
1.14 daniel 2676: maxatts * (long)sizeof(xmlChar *));
1.18 daniel 2677: if (name != NULL) xmlFree(name);
2678: return;
1.1 daniel 2679: }
2680: }
2681: atts[nbatts++] = attname;
2682: atts[nbatts++] = attvalue;
2683: atts[nbatts] = NULL;
2684: atts[nbatts + 1] = NULL;
2685: }
2686:
1.19 daniel 2687: failed:
1.1 daniel 2688: SKIP_BLANKS;
1.26 daniel 2689: if (cons == ctxt->nbChars) {
1.1 daniel 2690: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2691: ctxt->sax->error(ctxt->userData,
2692: "htmlParseStartTag: problem parsing attributes\n");
2693: ctxt->wellFormed = 0;
2694: break;
2695: }
2696: }
2697:
2698: /*
1.47 daniel 2699: * Handle specific association to the META tag
2700: */
2701: if (meta)
2702: htmlCheckMeta(ctxt, atts);
2703:
2704: /*
1.1 daniel 2705: * SAX: Start of Element !
2706: */
1.15 daniel 2707: htmlnamePush(ctxt, xmlStrdup(name));
1.18 daniel 2708: #ifdef DEBUG
2709: fprintf(stderr,"Start of element %s: pushed %s\n", name, ctxt->name);
2710: #endif
1.1 daniel 2711: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
2712: ctxt->sax->startElement(ctxt->userData, name, atts);
2713:
2714: if (atts != NULL) {
1.31 daniel 2715: for (i = 0;i < nbatts;i++) {
2716: if (atts[i] != NULL)
2717: xmlFree((xmlChar *) atts[i]);
2718: }
1.45 daniel 2719: xmlFree((void *) atts);
1.1 daniel 2720: }
1.18 daniel 2721: if (name != NULL) xmlFree(name);
1.1 daniel 2722: }
2723:
2724: /**
2725: * htmlParseEndTag:
2726: * @ctxt: an HTML parser context
2727: *
2728: * parse an end of tag
2729: *
2730: * [42] ETag ::= '</' Name S? '>'
2731: *
2732: * With namespace
2733: *
2734: * [NS 9] ETag ::= '</' QName S? '>'
2735: */
2736:
2737: void
1.18 daniel 2738: htmlParseEndTag(htmlParserCtxtPtr ctxt) {
1.14 daniel 2739: xmlChar *name;
1.15 daniel 2740: xmlChar *oldname;
1.1 daniel 2741: int i;
2742:
2743: if ((CUR != '<') || (NXT(1) != '/')) {
2744: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2745: ctxt->sax->error(ctxt->userData, "htmlParseEndTag: '</' not found\n");
2746: ctxt->wellFormed = 0;
2747: return;
2748: }
2749: SKIP(2);
2750:
2751: name = htmlParseHTMLName(ctxt);
1.24 daniel 2752: if (name == NULL) return;
1.1 daniel 2753:
2754: /*
2755: * We should definitely be at the ending "S? '>'" part
2756: */
2757: SKIP_BLANKS;
2758: if ((!IS_CHAR(CUR)) || (CUR != '>')) {
2759: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2760: ctxt->sax->error(ctxt->userData, "End tag : expected '>'\n");
2761: ctxt->wellFormed = 0;
2762: } else
2763: NEXT;
2764:
2765: /*
1.18 daniel 2766: * If the name read is not one of the element in the parsing stack
2767: * then return, it's just an error.
1.1 daniel 2768: */
1.18 daniel 2769: for (i = (ctxt->nameNr - 1);i >= 0;i--) {
2770: if (!xmlStrcmp(name, ctxt->nameTab[i])) break;
1.1 daniel 2771: }
2772: if (i < 0) {
2773: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1.18 daniel 2774: ctxt->sax->error(ctxt->userData,
2775: "Unexpected end tag : %s\n", name);
1.11 daniel 2776: xmlFree(name);
1.1 daniel 2777: ctxt->wellFormed = 0;
2778: return;
2779: }
2780:
1.18 daniel 2781:
1.1 daniel 2782: /*
2783: * Check for auto-closure of HTML elements.
2784: */
1.18 daniel 2785:
1.1 daniel 2786: htmlAutoCloseOnClose(ctxt, name);
2787:
2788: /*
2789: * Well formedness constraints, opening and closing must match.
2790: * With the exception that the autoclose may have popped stuff out
2791: * of the stack.
2792: */
1.18 daniel 2793: if (xmlStrcmp(name, ctxt->name)) {
2794: #ifdef DEBUG
2795: fprintf(stderr,"End of tag %s: expecting %s\n", name, ctxt->name);
2796: #endif
1.15 daniel 2797: if ((ctxt->name != NULL) &&
2798: (xmlStrcmp(ctxt->name, name))) {
1.1 daniel 2799: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2800: ctxt->sax->error(ctxt->userData,
2801: "Opening and ending tag mismatch: %s and %s\n",
1.15 daniel 2802: name, ctxt->name);
1.1 daniel 2803: ctxt->wellFormed = 0;
2804: }
2805: }
2806:
2807: /*
2808: * SAX: End of Tag
2809: */
1.15 daniel 2810: oldname = ctxt->name;
1.24 daniel 2811: if ((oldname != NULL) && (!xmlStrcmp(oldname, name))) {
1.18 daniel 2812: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
2813: ctxt->sax->endElement(ctxt->userData, name);
1.24 daniel 2814: oldname = htmlnamePop(ctxt);
1.18 daniel 2815: if (oldname != NULL) {
2816: #ifdef DEBUG
2817: fprintf(stderr,"End of tag %s: popping out %s\n", name, oldname);
2818: #endif
2819: xmlFree(oldname);
2820: #ifdef DEBUG
2821: } else {
2822: fprintf(stderr,"End of tag %s: stack empty !!!\n", name);
2823: #endif
2824: }
2825: }
1.1 daniel 2826:
2827: if (name != NULL)
1.11 daniel 2828: xmlFree(name);
1.1 daniel 2829:
2830: return;
2831: }
2832:
2833:
2834: /**
2835: * htmlParseReference:
2836: * @ctxt: an HTML parser context
2837: *
2838: * parse and handle entity references in content,
2839: * this will end-up in a call to character() since this is either a
2840: * CharRef, or a predefined entity.
2841: */
2842: void
2843: htmlParseReference(htmlParserCtxtPtr ctxt) {
2844: htmlEntityDescPtr ent;
1.52 veillard 2845: xmlChar out[6];
1.14 daniel 2846: xmlChar *name;
1.1 daniel 2847: if (CUR != '&') return;
2848:
2849: if (NXT(1) == '#') {
1.52 veillard 2850: unsigned int c;
2851: int bits, i = 0;
2852:
2853: c = htmlParseCharRef(ctxt);
2854: if (c < 0x80) { out[i++]= c; bits= -6; }
2855: else if (c < 0x800) { out[i++]=((c >> 6) & 0x1F) | 0xC0; bits= 0; }
2856: else if (c < 0x10000) { out[i++]=((c >> 12) & 0x0F) | 0xE0; bits= 6; }
2857: else { out[i++]=((c >> 18) & 0x07) | 0xF0; bits= 12; }
2858:
2859: for ( ; bits >= 0; bits-= 6) {
2860: out[i++]= ((c >> bits) & 0x3F) | 0x80;
2861: }
2862: out[i] = 0;
2863:
1.1 daniel 2864: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
1.52 veillard 2865: ctxt->sax->characters(ctxt->userData, out, i);
1.1 daniel 2866: } else {
2867: ent = htmlParseEntityRef(ctxt, &name);
1.32 daniel 2868: if (name == NULL) {
1.58 ! veillard 2869: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
! 2870: ctxt->sax->characters(ctxt->userData, BAD_CAST "&", 1);
1.32 daniel 2871: return;
2872: }
1.52 veillard 2873: if ((ent == NULL) || (ent->value <= 0)) {
1.1 daniel 2874: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL)) {
1.8 daniel 2875: ctxt->sax->characters(ctxt->userData, BAD_CAST "&", 1);
1.1 daniel 2876: ctxt->sax->characters(ctxt->userData, name, xmlStrlen(name));
1.32 daniel 2877: /* ctxt->sax->characters(ctxt->userData, BAD_CAST ";", 1); */
1.1 daniel 2878: }
2879: } else {
1.52 veillard 2880: unsigned int c;
2881: int bits, i = 0;
2882:
2883: c = ent->value;
2884: if (c < 0x80)
2885: { out[i++]= c; bits= -6; }
2886: else if (c < 0x800)
2887: { out[i++]=((c >> 6) & 0x1F) | 0xC0; bits= 0; }
2888: else if (c < 0x10000)
2889: { out[i++]=((c >> 12) & 0x0F) | 0xE0; bits= 6; }
2890: else
2891: { out[i++]=((c >> 18) & 0x07) | 0xF0; bits= 12; }
2892:
2893: for ( ; bits >= 0; bits-= 6) {
2894: out[i++]= ((c >> bits) & 0x3F) | 0x80;
2895: }
2896: out[i] = 0;
2897:
1.1 daniel 2898: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
1.52 veillard 2899: ctxt->sax->characters(ctxt->userData, out, i);
1.1 daniel 2900: }
1.11 daniel 2901: xmlFree(name);
1.1 daniel 2902: }
2903: }
2904:
2905: /**
2906: * htmlParseContent:
2907: * @ctxt: an HTML parser context
2908: * @name: the node name
2909: *
2910: * Parse a content: comment, sub-element, reference or text.
2911: *
2912: */
2913:
2914: void
1.18 daniel 2915: htmlParseContent(htmlParserCtxtPtr ctxt) {
1.15 daniel 2916: xmlChar *currentNode;
1.18 daniel 2917: int depth;
1.1 daniel 2918:
1.26 daniel 2919: currentNode = xmlStrdup(ctxt->name);
1.18 daniel 2920: depth = ctxt->nameNr;
2921: while (1) {
1.26 daniel 2922: long cons = ctxt->nbChars;
1.1 daniel 2923:
1.18 daniel 2924: GROW;
2925: /*
2926: * Our tag or one of it's parent or children is ending.
2927: */
2928: if ((CUR == '<') && (NXT(1) == '/')) {
2929: htmlParseEndTag(ctxt);
1.26 daniel 2930: if (currentNode != NULL) xmlFree(currentNode);
1.18 daniel 2931: return;
2932: }
2933:
2934: /*
2935: * Has this node been popped out during parsing of
2936: * the next element
2937: */
1.26 daniel 2938: if ((xmlStrcmp(currentNode, ctxt->name)) &&
2939: (depth >= ctxt->nameNr)) {
2940: if (currentNode != NULL) xmlFree(currentNode);
2941: return;
2942: }
1.18 daniel 2943:
1.1 daniel 2944: /*
2945: * First case : a comment
2946: */
2947: if ((CUR == '<') && (NXT(1) == '!') &&
2948: (NXT(2) == '-') && (NXT(3) == '-')) {
1.31 daniel 2949: htmlParseComment(ctxt);
1.1 daniel 2950: }
2951:
2952: /*
2953: * Second case : a sub-element.
2954: */
2955: else if (CUR == '<') {
2956: htmlParseElement(ctxt);
2957: }
2958:
2959: /*
2960: * Third case : a reference. If if has not been resolved,
2961: * parsing returns it's Name, create the node
2962: */
2963: else if (CUR == '&') {
2964: htmlParseReference(ctxt);
2965: }
2966:
2967: /*
1.47 daniel 2968: * Fourth : end of the resource
2969: */
2970: else if (CUR == 0) {
2971: htmlAutoClose(ctxt, NULL);
2972: }
2973:
2974: /*
1.1 daniel 2975: * Last case, text. Note that References are handled directly.
2976: */
2977: else {
2978: htmlParseCharData(ctxt, 0);
2979: }
2980:
1.26 daniel 2981: if (cons == ctxt->nbChars) {
1.22 daniel 2982: if (ctxt->node != NULL) {
2983: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2984: ctxt->sax->error(ctxt->userData,
2985: "detected an error in element content\n");
2986: ctxt->wellFormed = 0;
2987: }
1.1 daniel 2988: break;
2989: }
1.17 daniel 2990:
1.5 daniel 2991: GROW;
1.1 daniel 2992: }
1.26 daniel 2993: if (currentNode != NULL) xmlFree(currentNode);
1.1 daniel 2994: }
2995:
2996: /**
2997: * htmlParseElement:
2998: * @ctxt: an HTML parser context
2999: *
3000: * parse an HTML element, this is highly recursive
3001: *
3002: * [39] element ::= EmptyElemTag | STag content ETag
3003: *
3004: * [41] Attribute ::= Name Eq AttValue
3005: */
3006:
3007: void
3008: htmlParseElement(htmlParserCtxtPtr ctxt) {
1.14 daniel 3009: xmlChar *name;
1.16 daniel 3010: xmlChar *currentNode = NULL;
1.1 daniel 3011: htmlElemDescPtr info;
1.10 daniel 3012: htmlParserNodeInfo node_info;
1.31 daniel 3013: xmlChar *oldname;
1.18 daniel 3014: int depth = ctxt->nameNr;
1.1 daniel 3015:
3016: /* Capture start position */
1.10 daniel 3017: if (ctxt->record_info) {
3018: node_info.begin_pos = ctxt->input->consumed +
3019: (CUR_PTR - ctxt->input->base);
3020: node_info.begin_line = ctxt->input->line;
3021: }
1.1 daniel 3022:
1.26 daniel 3023: oldname = xmlStrdup(ctxt->name);
1.18 daniel 3024: htmlParseStartTag(ctxt);
3025: name = ctxt->name;
1.19 daniel 3026: #ifdef DEBUG
3027: if (oldname == NULL)
3028: fprintf(stderr, "Start of element %s\n", name);
3029: else if (name == NULL)
3030: fprintf(stderr, "Start of element failed, was %s\n", oldname);
3031: else
3032: fprintf(stderr, "Start of element %s, was %s\n", name, oldname);
3033: #endif
1.26 daniel 3034: if (((depth == ctxt->nameNr) && (!xmlStrcmp(oldname, ctxt->name))) ||
1.18 daniel 3035: (name == NULL)) {
1.19 daniel 3036: if (CUR == '>')
3037: NEXT;
1.26 daniel 3038: if (oldname != NULL)
3039: xmlFree(oldname);
1.1 daniel 3040: return;
3041: }
1.26 daniel 3042: if (oldname != NULL)
3043: xmlFree(oldname);
1.1 daniel 3044:
3045: /*
3046: * Lookup the info for that element.
3047: */
3048: info = htmlTagLookup(name);
3049: if (info == NULL) {
3050: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
3051: ctxt->sax->error(ctxt->userData, "Tag %s invalid\n",
3052: name);
3053: ctxt->wellFormed = 0;
3054: } else if (info->depr) {
3055: /***************************
3056: if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL))
3057: ctxt->sax->warning(ctxt->userData, "Tag %s is deprecated\n",
3058: name);
3059: ***************************/
3060: }
3061:
3062: /*
3063: * Check for an Empty Element labelled the XML/SGML way
3064: */
3065: if ((CUR == '/') && (NXT(1) == '>')) {
3066: SKIP(2);
3067: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
3068: ctxt->sax->endElement(ctxt->userData, name);
1.24 daniel 3069: oldname = htmlnamePop(ctxt);
1.18 daniel 3070: #ifdef DEBUG
3071: fprintf(stderr,"End of tag the XML way: popping out %s\n", oldname);
3072: #endif
1.17 daniel 3073: if (oldname != NULL)
3074: xmlFree(oldname);
1.1 daniel 3075: return;
3076: }
3077:
1.5 daniel 3078: if (CUR == '>') {
3079: NEXT;
3080: } else {
1.1 daniel 3081: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1.56 veillard 3082: ctxt->sax->error(ctxt->userData,
3083: "Couldn't find end of Start Tag %s\n",
3084: name);
1.1 daniel 3085: ctxt->wellFormed = 0;
3086:
3087: /*
3088: * end of parsing of this node.
3089: */
1.18 daniel 3090: if (!xmlStrcmp(name, ctxt->name)) {
3091: nodePop(ctxt);
1.24 daniel 3092: oldname = htmlnamePop(ctxt);
1.18 daniel 3093: #ifdef DEBUG
3094: fprintf(stderr,"End of start tag problem: popping out %s\n", oldname);
3095: #endif
3096: if (oldname != NULL)
3097: xmlFree(oldname);
3098: }
1.10 daniel 3099:
3100: /*
3101: * Capture end position and add node
3102: */
3103: if ( currentNode != NULL && ctxt->record_info ) {
3104: node_info.end_pos = ctxt->input->consumed +
3105: (CUR_PTR - ctxt->input->base);
3106: node_info.end_line = ctxt->input->line;
1.15 daniel 3107: node_info.node = ctxt->node;
1.10 daniel 3108: xmlParserAddNodeInfo(ctxt, &node_info);
3109: }
1.1 daniel 3110: return;
3111: }
3112:
3113: /*
3114: * Check for an Empty Element from DTD definition
3115: */
3116: if ((info != NULL) && (info->empty)) {
3117: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
3118: ctxt->sax->endElement(ctxt->userData, name);
1.24 daniel 3119: oldname = htmlnamePop(ctxt);
1.18 daniel 3120: #ifdef DEBUG
3121: fprintf(stderr,"End of empty tag %s : popping out %s\n", name, oldname);
3122: #endif
1.17 daniel 3123: if (oldname != NULL)
3124: xmlFree(oldname);
1.1 daniel 3125: return;
3126: }
3127:
3128: /*
3129: * Parse the content of the element:
3130: */
1.26 daniel 3131: currentNode = xmlStrdup(ctxt->name);
1.18 daniel 3132: depth = ctxt->nameNr;
3133: while (IS_CHAR(CUR)) {
3134: htmlParseContent(ctxt);
3135: if (ctxt->nameNr < depth) break;
3136: }
1.1 daniel 3137:
3138: if (!IS_CHAR(CUR)) {
1.49 daniel 3139: /************
1.1 daniel 3140: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
3141: ctxt->sax->error(ctxt->userData,
1.18 daniel 3142: "Premature end of data in tag %s\n", currentNode);
1.1 daniel 3143: ctxt->wellFormed = 0;
1.49 daniel 3144: *************/
1.1 daniel 3145:
3146: /*
3147: * end of parsing of this node.
3148: */
3149: nodePop(ctxt);
1.24 daniel 3150: oldname = htmlnamePop(ctxt);
1.18 daniel 3151: #ifdef DEBUG
3152: fprintf(stderr,"Premature end of tag %s : popping out %s\n", name, oldname);
3153: #endif
1.17 daniel 3154: if (oldname != NULL)
3155: xmlFree(oldname);
1.26 daniel 3156: if (currentNode != NULL)
3157: xmlFree(currentNode);
1.1 daniel 3158: return;
3159: }
1.10 daniel 3160:
3161: /*
3162: * Capture end position and add node
3163: */
3164: if ( currentNode != NULL && ctxt->record_info ) {
3165: node_info.end_pos = ctxt->input->consumed +
3166: (CUR_PTR - ctxt->input->base);
3167: node_info.end_line = ctxt->input->line;
1.15 daniel 3168: node_info.node = ctxt->node;
1.10 daniel 3169: xmlParserAddNodeInfo(ctxt, &node_info);
3170: }
1.26 daniel 3171: if (currentNode != NULL)
3172: xmlFree(currentNode);
1.1 daniel 3173: }
3174:
3175: /**
3176: * htmlParseDocument :
3177: * @ctxt: an HTML parser context
3178: *
3179: * parse an HTML document (and build a tree if using the standard SAX
3180: * interface).
3181: *
3182: * Returns 0, -1 in case of error. the parser context is augmented
3183: * as a result of the parsing.
3184: */
3185:
3186: int
3187: htmlParseDocument(htmlParserCtxtPtr ctxt) {
3188: htmlDefaultSAXHandlerInit();
3189: ctxt->html = 1;
3190:
1.5 daniel 3191: GROW;
1.1 daniel 3192: /*
1.9 daniel 3193: * SAX: beginning of the document processing.
1.1 daniel 3194: */
3195: if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
3196: ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator);
3197:
3198: /*
3199: * Wipe out everything which is before the first '<'
3200: */
1.22 daniel 3201: SKIP_BLANKS;
1.1 daniel 3202: if (CUR == 0) {
3203: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
3204: ctxt->sax->error(ctxt->userData, "Document is empty\n");
3205: ctxt->wellFormed = 0;
3206: }
3207:
1.40 daniel 3208: if ((ctxt->sax) && (ctxt->sax->startDocument) && (!ctxt->disableSAX))
3209: ctxt->sax->startDocument(ctxt->userData);
3210:
3211:
1.22 daniel 3212: /*
3213: * Parse possible comments before any content
3214: */
3215: while ((CUR == '<') && (NXT(1) == '!') &&
3216: (NXT(2) == '-') && (NXT(3) == '-')) {
1.31 daniel 3217: htmlParseComment(ctxt);
1.22 daniel 3218: SKIP_BLANKS;
3219: }
3220:
1.1 daniel 3221:
3222: /*
3223: * Then possibly doc type declaration(s) and more Misc
3224: * (doctypedecl Misc*)?
3225: */
3226: if ((CUR == '<') && (NXT(1) == '!') &&
3227: (UPP(2) == 'D') && (UPP(3) == 'O') &&
3228: (UPP(4) == 'C') && (UPP(5) == 'T') &&
3229: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
3230: (UPP(8) == 'E')) {
3231: htmlParseDocTypeDecl(ctxt);
3232: }
3233: SKIP_BLANKS;
3234:
3235: /*
1.55 veillard 3236: * Parse possible comments before any content
3237: */
3238: while ((CUR == '<') && (NXT(1) == '!') &&
3239: (NXT(2) == '-') && (NXT(3) == '-')) {
3240: htmlParseComment(ctxt);
3241: SKIP_BLANKS;
3242: }
3243:
3244: /*
1.1 daniel 3245: * Time to start parsing the tree itself
3246: */
1.22 daniel 3247: htmlParseContent(ctxt);
1.1 daniel 3248:
3249: /*
1.47 daniel 3250: * autoclose
3251: */
3252: if (CUR == 0)
3253: htmlAutoClose(ctxt, NULL);
3254:
3255:
3256: /*
1.1 daniel 3257: * SAX: end of the document processing.
3258: */
3259: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
3260: ctxt->sax->endDocument(ctxt->userData);
3261: if (! ctxt->wellFormed) return(-1);
3262: return(0);
3263: }
3264:
3265:
1.30 daniel 3266: /************************************************************************
3267: * *
3268: * Parser contexts handling *
3269: * *
3270: ************************************************************************/
1.1 daniel 3271:
3272: /**
3273: * xmlInitParserCtxt:
3274: * @ctxt: an HTML parser context
3275: *
3276: * Initialize a parser context
3277: */
3278:
3279: void
3280: htmlInitParserCtxt(htmlParserCtxtPtr ctxt)
3281: {
3282: htmlSAXHandler *sax;
3283:
1.21 daniel 3284: if (ctxt == NULL) return;
3285: memset(ctxt, 0, sizeof(htmlParserCtxt));
3286:
1.11 daniel 3287: sax = (htmlSAXHandler *) xmlMalloc(sizeof(htmlSAXHandler));
1.1 daniel 3288: if (sax == NULL) {
3289: fprintf(stderr, "htmlInitParserCtxt: out of memory\n");
3290: }
1.19 daniel 3291: memset(sax, 0, sizeof(htmlSAXHandler));
1.1 daniel 3292:
3293: /* Allocate the Input stack */
1.19 daniel 3294: ctxt->inputTab = (htmlParserInputPtr *)
3295: xmlMalloc(5 * sizeof(htmlParserInputPtr));
3296: if (ctxt->inputTab == NULL) {
3297: fprintf(stderr, "htmlInitParserCtxt: out of memory\n");
3298: }
1.1 daniel 3299: ctxt->inputNr = 0;
3300: ctxt->inputMax = 5;
3301: ctxt->input = NULL;
3302: ctxt->version = NULL;
3303: ctxt->encoding = NULL;
3304: ctxt->standalone = -1;
1.30 daniel 3305: ctxt->instate = XML_PARSER_START;
1.1 daniel 3306:
3307: /* Allocate the Node stack */
1.11 daniel 3308: ctxt->nodeTab = (htmlNodePtr *) xmlMalloc(10 * sizeof(htmlNodePtr));
1.1 daniel 3309: ctxt->nodeNr = 0;
3310: ctxt->nodeMax = 10;
3311: ctxt->node = NULL;
3312:
1.15 daniel 3313: /* Allocate the Name stack */
3314: ctxt->nameTab = (xmlChar **) xmlMalloc(10 * sizeof(xmlChar *));
3315: ctxt->nameNr = 0;
3316: ctxt->nameMax = 10;
3317: ctxt->name = NULL;
3318:
1.1 daniel 3319: if (sax == NULL) ctxt->sax = &htmlDefaultSAXHandler;
3320: else {
3321: ctxt->sax = sax;
3322: memcpy(sax, &htmlDefaultSAXHandler, sizeof(htmlSAXHandler));
3323: }
3324: ctxt->userData = ctxt;
3325: ctxt->myDoc = NULL;
3326: ctxt->wellFormed = 1;
3327: ctxt->replaceEntities = 0;
3328: ctxt->html = 1;
3329: ctxt->record_info = 0;
1.21 daniel 3330: ctxt->validate = 0;
1.26 daniel 3331: ctxt->nbChars = 0;
1.30 daniel 3332: ctxt->checkIndex = 0;
1.1 daniel 3333: xmlInitNodeInfoSeq(&ctxt->node_seq);
3334: }
3335:
3336: /**
3337: * htmlFreeParserCtxt:
3338: * @ctxt: an HTML parser context
3339: *
3340: * Free all the memory used by a parser context. However the parsed
3341: * document in ctxt->myDoc is not freed.
3342: */
3343:
3344: void
3345: htmlFreeParserCtxt(htmlParserCtxtPtr ctxt)
3346: {
1.47 daniel 3347: xmlFreeParserCtxt(ctxt);
1.1 daniel 3348: }
3349:
3350: /**
3351: * htmlCreateDocParserCtxt :
1.14 daniel 3352: * @cur: a pointer to an array of xmlChar
1.1 daniel 3353: * @encoding: a free form C string describing the HTML document encoding, or NULL
3354: *
3355: * Create a parser context for an HTML document.
3356: *
3357: * Returns the new parser context or NULL
3358: */
3359: htmlParserCtxtPtr
1.14 daniel 3360: htmlCreateDocParserCtxt(xmlChar *cur, const char *encoding) {
1.1 daniel 3361: htmlParserCtxtPtr ctxt;
3362: htmlParserInputPtr input;
3363: /* htmlCharEncoding enc; */
3364:
1.11 daniel 3365: ctxt = (htmlParserCtxtPtr) xmlMalloc(sizeof(htmlParserCtxt));
1.1 daniel 3366: if (ctxt == NULL) {
3367: perror("malloc");
3368: return(NULL);
3369: }
3370: htmlInitParserCtxt(ctxt);
1.11 daniel 3371: input = (htmlParserInputPtr) xmlMalloc(sizeof(htmlParserInput));
1.1 daniel 3372: if (input == NULL) {
3373: perror("malloc");
1.11 daniel 3374: xmlFree(ctxt);
1.1 daniel 3375: return(NULL);
3376: }
1.19 daniel 3377: memset(input, 0, sizeof(htmlParserInput));
1.1 daniel 3378:
3379: input->line = 1;
3380: input->col = 1;
3381: input->base = cur;
3382: input->cur = cur;
3383:
3384: inputPush(ctxt, input);
3385: return(ctxt);
3386: }
3387:
1.31 daniel 3388: /************************************************************************
3389: * *
3390: * Progressive parsing interfaces *
3391: * *
3392: ************************************************************************/
3393:
3394: /**
3395: * htmlParseLookupSequence:
3396: * @ctxt: an HTML parser context
3397: * @first: the first char to lookup
3398: * @next: the next char to lookup or zero
3399: * @third: the next char to lookup or zero
3400: *
3401: * Try to find if a sequence (first, next, third) or just (first next) or
3402: * (first) is available in the input stream.
3403: * This function has a side effect of (possibly) incrementing ctxt->checkIndex
3404: * to avoid rescanning sequences of bytes, it DOES change the state of the
3405: * parser, do not use liberally.
3406: * This is basically similar to xmlParseLookupSequence()
3407: *
3408: * Returns the index to the current parsing point if the full sequence
3409: * is available, -1 otherwise.
3410: */
3411: int
3412: htmlParseLookupSequence(htmlParserCtxtPtr ctxt, xmlChar first,
3413: xmlChar next, xmlChar third) {
3414: int base, len;
3415: htmlParserInputPtr in;
3416: const xmlChar *buf;
3417:
3418: in = ctxt->input;
3419: if (in == NULL) return(-1);
3420: base = in->cur - in->base;
3421: if (base < 0) return(-1);
3422: if (ctxt->checkIndex > base)
3423: base = ctxt->checkIndex;
3424: if (in->buf == NULL) {
3425: buf = in->base;
3426: len = in->length;
3427: } else {
3428: buf = in->buf->buffer->content;
3429: len = in->buf->buffer->use;
3430: }
3431: /* take into account the sequence length */
3432: if (third) len -= 2;
3433: else if (next) len --;
3434: for (;base < len;base++) {
3435: if (buf[base] == first) {
3436: if (third != 0) {
3437: if ((buf[base + 1] != next) ||
3438: (buf[base + 2] != third)) continue;
3439: } else if (next != 0) {
3440: if (buf[base + 1] != next) continue;
3441: }
3442: ctxt->checkIndex = 0;
3443: #ifdef DEBUG_PUSH
3444: if (next == 0)
3445: fprintf(stderr, "HPP: lookup '%c' found at %d\n",
3446: first, base);
3447: else if (third == 0)
3448: fprintf(stderr, "HPP: lookup '%c%c' found at %d\n",
3449: first, next, base);
3450: else
3451: fprintf(stderr, "HPP: lookup '%c%c%c' found at %d\n",
3452: first, next, third, base);
3453: #endif
3454: return(base - (in->cur - in->base));
3455: }
3456: }
3457: ctxt->checkIndex = base;
3458: #ifdef DEBUG_PUSH
3459: if (next == 0)
3460: fprintf(stderr, "HPP: lookup '%c' failed\n", first);
3461: else if (third == 0)
3462: fprintf(stderr, "HPP: lookup '%c%c' failed\n", first, next);
3463: else
3464: fprintf(stderr, "HPP: lookup '%c%c%c' failed\n", first, next, third);
3465: #endif
3466: return(-1);
3467: }
3468:
3469: /**
1.32 daniel 3470: * htmlParseTryOrFinish:
1.31 daniel 3471: * @ctxt: an HTML parser context
1.32 daniel 3472: * @terminate: last chunk indicator
1.31 daniel 3473: *
3474: * Try to progress on parsing
3475: *
3476: * Returns zero if no parsing was possible
3477: */
3478: int
1.32 daniel 3479: htmlParseTryOrFinish(htmlParserCtxtPtr ctxt, int terminate) {
1.31 daniel 3480: int ret = 0;
3481: htmlParserInputPtr in;
1.47 daniel 3482: int avail = 0;
1.31 daniel 3483: xmlChar cur, next;
3484:
3485: #ifdef DEBUG_PUSH
3486: switch (ctxt->instate) {
3487: case XML_PARSER_EOF:
3488: fprintf(stderr, "HPP: try EOF\n"); break;
3489: case XML_PARSER_START:
3490: fprintf(stderr, "HPP: try START\n"); break;
3491: case XML_PARSER_MISC:
3492: fprintf(stderr, "HPP: try MISC\n");break;
3493: case XML_PARSER_COMMENT:
3494: fprintf(stderr, "HPP: try COMMENT\n");break;
3495: case XML_PARSER_PROLOG:
3496: fprintf(stderr, "HPP: try PROLOG\n");break;
3497: case XML_PARSER_START_TAG:
3498: fprintf(stderr, "HPP: try START_TAG\n");break;
3499: case XML_PARSER_CONTENT:
3500: fprintf(stderr, "HPP: try CONTENT\n");break;
3501: case XML_PARSER_CDATA_SECTION:
3502: fprintf(stderr, "HPP: try CDATA_SECTION\n");break;
3503: case XML_PARSER_END_TAG:
3504: fprintf(stderr, "HPP: try END_TAG\n");break;
3505: case XML_PARSER_ENTITY_DECL:
3506: fprintf(stderr, "HPP: try ENTITY_DECL\n");break;
3507: case XML_PARSER_ENTITY_VALUE:
3508: fprintf(stderr, "HPP: try ENTITY_VALUE\n");break;
3509: case XML_PARSER_ATTRIBUTE_VALUE:
3510: fprintf(stderr, "HPP: try ATTRIBUTE_VALUE\n");break;
3511: case XML_PARSER_DTD:
3512: fprintf(stderr, "HPP: try DTD\n");break;
3513: case XML_PARSER_EPILOG:
3514: fprintf(stderr, "HPP: try EPILOG\n");break;
3515: case XML_PARSER_PI:
3516: fprintf(stderr, "HPP: try PI\n");break;
3517: }
3518: #endif
3519:
3520: while (1) {
3521:
3522: in = ctxt->input;
3523: if (in == NULL) break;
3524: if (in->buf == NULL)
3525: avail = in->length - (in->cur - in->base);
3526: else
3527: avail = in->buf->buffer->use - (in->cur - in->base);
1.47 daniel 3528: if ((avail == 0) && (terminate)) {
3529: htmlAutoClose(ctxt, NULL);
1.54 veillard 3530: if ((ctxt->nameNr == 0) && (ctxt->instate != XML_PARSER_EOF)) {
3531: /*
3532: * SAX: end of the document processing.
3533: */
1.47 daniel 3534: ctxt->instate = XML_PARSER_EOF;
1.54 veillard 3535: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
3536: ctxt->sax->endDocument(ctxt->userData);
3537: }
1.47 daniel 3538: }
1.31 daniel 3539: if (avail < 1)
3540: goto done;
3541: switch (ctxt->instate) {
3542: case XML_PARSER_EOF:
3543: /*
3544: * Document parsing is done !
3545: */
3546: goto done;
3547: case XML_PARSER_START:
3548: /*
3549: * Very first chars read from the document flow.
3550: */
3551: cur = in->cur[0];
3552: if (IS_BLANK(cur)) {
3553: SKIP_BLANKS;
3554: if (in->buf == NULL)
3555: avail = in->length - (in->cur - in->base);
3556: else
3557: avail = in->buf->buffer->use - (in->cur - in->base);
3558: }
3559: if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
3560: ctxt->sax->setDocumentLocator(ctxt->userData,
3561: &xmlDefaultSAXLocator);
1.46 daniel 3562: if ((ctxt->sax) && (ctxt->sax->startDocument) &&
3563: (!ctxt->disableSAX))
3564: ctxt->sax->startDocument(ctxt->userData);
3565:
1.31 daniel 3566: cur = in->cur[0];
3567: next = in->cur[1];
3568: if ((cur == '<') && (next == '!') &&
3569: (UPP(2) == 'D') && (UPP(3) == 'O') &&
3570: (UPP(4) == 'C') && (UPP(5) == 'T') &&
3571: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
3572: (UPP(8) == 'E')) {
1.32 daniel 3573: if ((!terminate) &&
3574: (htmlParseLookupSequence(ctxt, '>', 0, 0) < 0))
1.31 daniel 3575: goto done;
3576: #ifdef DEBUG_PUSH
3577: fprintf(stderr, "HPP: Parsing internal subset\n");
3578: #endif
3579: htmlParseDocTypeDecl(ctxt);
3580: ctxt->instate = XML_PARSER_PROLOG;
3581: #ifdef DEBUG_PUSH
3582: fprintf(stderr, "HPP: entering PROLOG\n");
3583: #endif
3584: } else {
3585: ctxt->instate = XML_PARSER_MISC;
3586: }
3587: #ifdef DEBUG_PUSH
3588: fprintf(stderr, "HPP: entering MISC\n");
3589: #endif
3590: break;
3591: case XML_PARSER_MISC:
3592: SKIP_BLANKS;
3593: if (in->buf == NULL)
3594: avail = in->length - (in->cur - in->base);
3595: else
3596: avail = in->buf->buffer->use - (in->cur - in->base);
3597: if (avail < 2)
3598: goto done;
3599: cur = in->cur[0];
3600: next = in->cur[1];
3601: if ((cur == '<') && (next == '!') &&
3602: (in->cur[2] == '-') && (in->cur[3] == '-')) {
1.32 daniel 3603: if ((!terminate) &&
3604: (htmlParseLookupSequence(ctxt, '-', '-', '>') < 0))
1.31 daniel 3605: goto done;
3606: #ifdef DEBUG_PUSH
3607: fprintf(stderr, "HPP: Parsing Comment\n");
3608: #endif
3609: htmlParseComment(ctxt);
3610: ctxt->instate = XML_PARSER_MISC;
3611: } else if ((cur == '<') && (next == '!') &&
3612: (UPP(2) == 'D') && (UPP(3) == 'O') &&
3613: (UPP(4) == 'C') && (UPP(5) == 'T') &&
3614: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
3615: (UPP(8) == 'E')) {
1.32 daniel 3616: if ((!terminate) &&
3617: (htmlParseLookupSequence(ctxt, '>', 0, 0) < 0))
1.31 daniel 3618: goto done;
3619: #ifdef DEBUG_PUSH
3620: fprintf(stderr, "HPP: Parsing internal subset\n");
3621: #endif
3622: htmlParseDocTypeDecl(ctxt);
3623: ctxt->instate = XML_PARSER_PROLOG;
3624: #ifdef DEBUG_PUSH
3625: fprintf(stderr, "HPP: entering PROLOG\n");
3626: #endif
3627: } else if ((cur == '<') && (next == '!') &&
3628: (avail < 9)) {
3629: goto done;
3630: } else {
3631: ctxt->instate = XML_PARSER_START_TAG;
3632: #ifdef DEBUG_PUSH
3633: fprintf(stderr, "HPP: entering START_TAG\n");
3634: #endif
3635: }
3636: break;
3637: case XML_PARSER_PROLOG:
3638: SKIP_BLANKS;
3639: if (in->buf == NULL)
3640: avail = in->length - (in->cur - in->base);
3641: else
3642: avail = in->buf->buffer->use - (in->cur - in->base);
3643: if (avail < 2)
3644: goto done;
3645: cur = in->cur[0];
3646: next = in->cur[1];
3647: if ((cur == '<') && (next == '!') &&
3648: (in->cur[2] == '-') && (in->cur[3] == '-')) {
1.32 daniel 3649: if ((!terminate) &&
3650: (htmlParseLookupSequence(ctxt, '-', '-', '>') < 0))
1.31 daniel 3651: goto done;
3652: #ifdef DEBUG_PUSH
3653: fprintf(stderr, "HPP: Parsing Comment\n");
3654: #endif
3655: htmlParseComment(ctxt);
3656: ctxt->instate = XML_PARSER_PROLOG;
3657: } else if ((cur == '<') && (next == '!') &&
3658: (avail < 4)) {
3659: goto done;
3660: } else {
3661: ctxt->instate = XML_PARSER_START_TAG;
3662: #ifdef DEBUG_PUSH
3663: fprintf(stderr, "HPP: entering START_TAG\n");
3664: #endif
3665: }
3666: break;
3667: case XML_PARSER_EPILOG:
3668: if (in->buf == NULL)
3669: avail = in->length - (in->cur - in->base);
3670: else
3671: avail = in->buf->buffer->use - (in->cur - in->base);
1.55 veillard 3672: if (avail < 1)
3673: goto done;
3674: cur = in->cur[0];
3675: if (IS_BLANK(cur)) {
3676: htmlParseCharData(ctxt, 0);
3677: goto done;
3678: }
1.31 daniel 3679: if (avail < 2)
3680: goto done;
3681: next = in->cur[1];
3682: if ((cur == '<') && (next == '!') &&
3683: (in->cur[2] == '-') && (in->cur[3] == '-')) {
1.32 daniel 3684: if ((!terminate) &&
3685: (htmlParseLookupSequence(ctxt, '-', '-', '>') < 0))
1.31 daniel 3686: goto done;
3687: #ifdef DEBUG_PUSH
3688: fprintf(stderr, "HPP: Parsing Comment\n");
3689: #endif
3690: htmlParseComment(ctxt);
3691: ctxt->instate = XML_PARSER_EPILOG;
3692: } else if ((cur == '<') && (next == '!') &&
3693: (avail < 4)) {
3694: goto done;
3695: } else {
3696: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
3697: ctxt->sax->error(ctxt->userData,
3698: "Extra content at the end of the document\n");
3699: ctxt->wellFormed = 0;
3700: ctxt->errNo = XML_ERR_DOCUMENT_END;
3701: ctxt->instate = XML_PARSER_EOF;
3702: #ifdef DEBUG_PUSH
3703: fprintf(stderr, "HPP: entering EOF\n");
3704: #endif
3705: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
3706: ctxt->sax->endDocument(ctxt->userData);
3707: goto done;
3708: }
3709: break;
3710: case XML_PARSER_START_TAG: {
3711: xmlChar *name, *oldname;
3712: int depth = ctxt->nameNr;
3713: htmlElemDescPtr info;
3714:
3715: if (avail < 2)
3716: goto done;
3717: cur = in->cur[0];
3718: if (cur != '<') {
3719: ctxt->instate = XML_PARSER_CONTENT;
3720: #ifdef DEBUG_PUSH
3721: fprintf(stderr, "HPP: entering CONTENT\n");
3722: #endif
3723: break;
3724: }
1.32 daniel 3725: if ((!terminate) &&
3726: (htmlParseLookupSequence(ctxt, '>', 0, 0) < 0))
1.31 daniel 3727: goto done;
3728:
3729: oldname = xmlStrdup(ctxt->name);
3730: htmlParseStartTag(ctxt);
3731: name = ctxt->name;
3732: #ifdef DEBUG
3733: if (oldname == NULL)
3734: fprintf(stderr, "Start of element %s\n", name);
3735: else if (name == NULL)
3736: fprintf(stderr, "Start of element failed, was %s\n",
3737: oldname);
3738: else
3739: fprintf(stderr, "Start of element %s, was %s\n",
3740: name, oldname);
3741: #endif
3742: if (((depth == ctxt->nameNr) &&
3743: (!xmlStrcmp(oldname, ctxt->name))) ||
3744: (name == NULL)) {
3745: if (CUR == '>')
3746: NEXT;
3747: if (oldname != NULL)
3748: xmlFree(oldname);
3749: break;
3750: }
3751: if (oldname != NULL)
3752: xmlFree(oldname);
3753:
3754: /*
3755: * Lookup the info for that element.
3756: */
3757: info = htmlTagLookup(name);
3758: if (info == NULL) {
3759: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
3760: ctxt->sax->error(ctxt->userData, "Tag %s invalid\n",
3761: name);
3762: ctxt->wellFormed = 0;
3763: } else if (info->depr) {
3764: /***************************
3765: if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL))
3766: ctxt->sax->warning(ctxt->userData,
3767: "Tag %s is deprecated\n",
3768: name);
3769: ***************************/
3770: }
3771:
3772: /*
3773: * Check for an Empty Element labelled the XML/SGML way
3774: */
3775: if ((CUR == '/') && (NXT(1) == '>')) {
3776: SKIP(2);
3777: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
3778: ctxt->sax->endElement(ctxt->userData, name);
3779: oldname = htmlnamePop(ctxt);
3780: #ifdef DEBUG
3781: fprintf(stderr,"End of tag the XML way: popping out %s\n",
3782: oldname);
3783: #endif
3784: if (oldname != NULL)
3785: xmlFree(oldname);
3786: ctxt->instate = XML_PARSER_CONTENT;
3787: #ifdef DEBUG_PUSH
3788: fprintf(stderr, "HPP: entering CONTENT\n");
3789: #endif
3790: break;
3791: }
3792:
3793: if (CUR == '>') {
3794: NEXT;
3795: } else {
3796: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
3797: ctxt->sax->error(ctxt->userData,
3798: "Couldn't find end of Start Tag %s\n",
3799: name);
3800: ctxt->wellFormed = 0;
3801:
3802: /*
3803: * end of parsing of this node.
3804: */
3805: if (!xmlStrcmp(name, ctxt->name)) {
3806: nodePop(ctxt);
3807: oldname = htmlnamePop(ctxt);
3808: #ifdef DEBUG
3809: fprintf(stderr,
3810: "End of start tag problem: popping out %s\n", oldname);
3811: #endif
3812: if (oldname != NULL)
3813: xmlFree(oldname);
3814: }
3815:
3816: ctxt->instate = XML_PARSER_CONTENT;
3817: #ifdef DEBUG_PUSH
3818: fprintf(stderr, "HPP: entering CONTENT\n");
3819: #endif
3820: break;
3821: }
3822:
3823: /*
3824: * Check for an Empty Element from DTD definition
3825: */
3826: if ((info != NULL) && (info->empty)) {
3827: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
3828: ctxt->sax->endElement(ctxt->userData, name);
3829: oldname = htmlnamePop(ctxt);
3830: #ifdef DEBUG
3831: fprintf(stderr,"End of empty tag %s : popping out %s\n", name, oldname);
3832: #endif
3833: if (oldname != NULL)
3834: xmlFree(oldname);
3835: }
3836: ctxt->instate = XML_PARSER_CONTENT;
3837: #ifdef DEBUG_PUSH
3838: fprintf(stderr, "HPP: entering CONTENT\n");
3839: #endif
3840: break;
3841: }
1.56 veillard 3842: case XML_PARSER_CONTENT: {
3843: long cons;
1.31 daniel 3844: /*
3845: * Handle preparsed entities and charRef
3846: */
3847: if (ctxt->token != 0) {
1.47 daniel 3848: xmlChar chr[2] = { 0 , 0 } ;
1.31 daniel 3849:
1.47 daniel 3850: chr[0] = (xmlChar) ctxt->token;
1.31 daniel 3851: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
1.47 daniel 3852: ctxt->sax->characters(ctxt->userData, chr, 1);
1.31 daniel 3853: ctxt->token = 0;
3854: ctxt->checkIndex = 0;
3855: }
1.47 daniel 3856: if ((avail == 1) && (terminate)) {
3857: cur = in->cur[0];
3858: if ((cur != '<') && (cur != '&')) {
1.48 daniel 3859: if (ctxt->sax != NULL) {
3860: if (IS_BLANK(cur)) {
3861: if (ctxt->sax->ignorableWhitespace != NULL)
3862: ctxt->sax->ignorableWhitespace(
3863: ctxt->userData, &cur, 1);
3864: } else {
3865: if (ctxt->sax->characters != NULL)
3866: ctxt->sax->characters(
3867: ctxt->userData, &cur, 1);
3868: }
3869: }
1.47 daniel 3870: ctxt->token = 0;
3871: ctxt->checkIndex = 0;
3872: NEXT;
3873: }
3874: break;
3875: }
1.31 daniel 3876: if (avail < 2)
3877: goto done;
3878: cur = in->cur[0];
3879: next = in->cur[1];
1.56 veillard 3880: cons = ctxt->nbChars;
1.31 daniel 3881: if ((cur == '<') && (next == '!') &&
3882: (in->cur[2] == '-') && (in->cur[3] == '-')) {
1.32 daniel 3883: if ((!terminate) &&
3884: (htmlParseLookupSequence(ctxt, '-', '-', '>') < 0))
1.31 daniel 3885: goto done;
3886: #ifdef DEBUG_PUSH
3887: fprintf(stderr, "HPP: Parsing Comment\n");
3888: #endif
3889: htmlParseComment(ctxt);
3890: ctxt->instate = XML_PARSER_CONTENT;
3891: } else if ((cur == '<') && (next == '!') && (avail < 4)) {
3892: goto done;
3893: } else if ((cur == '<') && (next == '/')) {
3894: ctxt->instate = XML_PARSER_END_TAG;
3895: ctxt->checkIndex = 0;
3896: #ifdef DEBUG_PUSH
3897: fprintf(stderr, "HPP: entering END_TAG\n");
3898: #endif
3899: break;
3900: } else if (cur == '<') {
3901: ctxt->instate = XML_PARSER_START_TAG;
3902: ctxt->checkIndex = 0;
3903: #ifdef DEBUG_PUSH
3904: fprintf(stderr, "HPP: entering START_TAG\n");
3905: #endif
3906: break;
3907: } else if (cur == '&') {
1.32 daniel 3908: if ((!terminate) &&
3909: (htmlParseLookupSequence(ctxt, ';', 0, 0) < 0))
1.31 daniel 3910: goto done;
3911: #ifdef DEBUG_PUSH
3912: fprintf(stderr, "HPP: Parsing Reference\n");
3913: #endif
3914: /* TODO: check generation of subtrees if noent !!! */
3915: htmlParseReference(ctxt);
3916: } else {
3917: /* TODO Avoid the extra copy, handle directly !!!!!! */
3918: /*
3919: * Goal of the following test is :
3920: * - minimize calls to the SAX 'character' callback
3921: * when they are mergeable
3922: */
3923: if ((ctxt->inputNr == 1) &&
3924: (avail < HTML_PARSER_BIG_BUFFER_SIZE)) {
1.32 daniel 3925: if ((!terminate) &&
3926: (htmlParseLookupSequence(ctxt, '<', 0, 0) < 0))
1.31 daniel 3927: goto done;
3928: }
3929: ctxt->checkIndex = 0;
3930: #ifdef DEBUG_PUSH
3931: fprintf(stderr, "HPP: Parsing char data\n");
3932: #endif
3933: htmlParseCharData(ctxt, 0);
3934: }
1.56 veillard 3935: if (cons == ctxt->nbChars) {
3936: if (ctxt->node != NULL) {
3937: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
3938: ctxt->sax->error(ctxt->userData,
3939: "detected an error in element content\n");
3940: ctxt->wellFormed = 0;
3941: NEXT;
3942: }
3943: break;
3944: }
3945:
1.31 daniel 3946: break;
1.56 veillard 3947: }
1.31 daniel 3948: case XML_PARSER_END_TAG:
3949: if (avail < 2)
3950: goto done;
1.32 daniel 3951: if ((!terminate) &&
3952: (htmlParseLookupSequence(ctxt, '>', 0, 0) < 0))
1.31 daniel 3953: goto done;
3954: htmlParseEndTag(ctxt);
3955: if (ctxt->nameNr == 0) {
3956: ctxt->instate = XML_PARSER_EPILOG;
3957: } else {
3958: ctxt->instate = XML_PARSER_CONTENT;
3959: }
3960: ctxt->checkIndex = 0;
3961: #ifdef DEBUG_PUSH
3962: fprintf(stderr, "HPP: entering CONTENT\n");
3963: #endif
3964: break;
3965: case XML_PARSER_CDATA_SECTION:
3966: fprintf(stderr, "HPP: internal error, state == CDATA\n");
3967: ctxt->instate = XML_PARSER_CONTENT;
3968: ctxt->checkIndex = 0;
3969: #ifdef DEBUG_PUSH
3970: fprintf(stderr, "HPP: entering CONTENT\n");
3971: #endif
3972: break;
3973: case XML_PARSER_DTD:
3974: fprintf(stderr, "HPP: internal error, state == DTD\n");
3975: ctxt->instate = XML_PARSER_CONTENT;
3976: ctxt->checkIndex = 0;
3977: #ifdef DEBUG_PUSH
3978: fprintf(stderr, "HPP: entering CONTENT\n");
3979: #endif
3980: break;
3981: case XML_PARSER_COMMENT:
3982: fprintf(stderr, "HPP: internal error, state == COMMENT\n");
3983: ctxt->instate = XML_PARSER_CONTENT;
3984: ctxt->checkIndex = 0;
3985: #ifdef DEBUG_PUSH
3986: fprintf(stderr, "HPP: entering CONTENT\n");
3987: #endif
3988: break;
3989: case XML_PARSER_PI:
3990: fprintf(stderr, "HPP: internal error, state == PI\n");
3991: ctxt->instate = XML_PARSER_CONTENT;
3992: ctxt->checkIndex = 0;
3993: #ifdef DEBUG_PUSH
3994: fprintf(stderr, "HPP: entering CONTENT\n");
3995: #endif
3996: break;
3997: case XML_PARSER_ENTITY_DECL:
3998: fprintf(stderr, "HPP: internal error, state == ENTITY_DECL\n");
3999: ctxt->instate = XML_PARSER_CONTENT;
4000: ctxt->checkIndex = 0;
4001: #ifdef DEBUG_PUSH
4002: fprintf(stderr, "HPP: entering CONTENT\n");
4003: #endif
4004: break;
4005: case XML_PARSER_ENTITY_VALUE:
4006: fprintf(stderr, "HPP: internal error, state == ENTITY_VALUE\n");
4007: ctxt->instate = XML_PARSER_CONTENT;
4008: ctxt->checkIndex = 0;
4009: #ifdef DEBUG_PUSH
4010: fprintf(stderr, "HPP: entering DTD\n");
4011: #endif
4012: break;
4013: case XML_PARSER_ATTRIBUTE_VALUE:
4014: fprintf(stderr, "HPP: internal error, state == ATTRIBUTE_VALUE\n");
4015: ctxt->instate = XML_PARSER_START_TAG;
4016: ctxt->checkIndex = 0;
4017: #ifdef DEBUG_PUSH
4018: fprintf(stderr, "HPP: entering START_TAG\n");
1.53 veillard 4019: #endif
4020: break;
4021: case XML_PARSER_SYSTEM_LITERAL:
4022: fprintf(stderr, "HPP: internal error, state == XML_PARSER_SYSTEM_LITERAL\n");
4023: ctxt->instate = XML_PARSER_CONTENT;
4024: ctxt->checkIndex = 0;
4025: #ifdef DEBUG_PUSH
4026: fprintf(stderr, "HPP: entering CONTENT\n");
1.31 daniel 4027: #endif
4028: break;
4029: }
4030: }
4031: done:
1.47 daniel 4032: if ((avail == 0) && (terminate)) {
4033: htmlAutoClose(ctxt, NULL);
1.54 veillard 4034: if ((ctxt->nameNr == 0) && (ctxt->instate != XML_PARSER_EOF)) {
4035: /*
4036: * SAX: end of the document processing.
4037: */
1.47 daniel 4038: ctxt->instate = XML_PARSER_EOF;
1.54 veillard 4039: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
4040: ctxt->sax->endDocument(ctxt->userData);
4041: }
1.47 daniel 4042: }
1.31 daniel 4043: #ifdef DEBUG_PUSH
4044: fprintf(stderr, "HPP: done %d\n", ret);
4045: #endif
4046: return(ret);
4047: }
4048:
4049: /**
1.32 daniel 4050: * htmlParseTry:
4051: * @ctxt: an HTML parser context
4052: *
4053: * Try to progress on parsing
4054: *
4055: * Returns zero if no parsing was possible
4056: */
4057: int
4058: htmlParseTry(htmlParserCtxtPtr ctxt) {
4059: return(htmlParseTryOrFinish(ctxt, 0));
4060: }
4061:
4062: /**
1.31 daniel 4063: * htmlParseChunk:
4064: * @ctxt: an XML parser context
4065: * @chunk: an char array
4066: * @size: the size in byte of the chunk
4067: * @terminate: last chunk indicator
4068: *
4069: * Parse a Chunk of memory
4070: *
4071: * Returns zero if no error, the xmlParserErrors otherwise.
4072: */
4073: int
4074: htmlParseChunk(htmlParserCtxtPtr ctxt, const char *chunk, int size,
4075: int terminate) {
4076: if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) &&
4077: (ctxt->input->buf != NULL) && (ctxt->instate != XML_PARSER_EOF)) {
4078: int base = ctxt->input->base - ctxt->input->buf->buffer->content;
4079: int cur = ctxt->input->cur - ctxt->input->base;
4080:
4081: xmlParserInputBufferPush(ctxt->input->buf, size, chunk);
4082: ctxt->input->base = ctxt->input->buf->buffer->content + base;
4083: ctxt->input->cur = ctxt->input->base + cur;
4084: #ifdef DEBUG_PUSH
4085: fprintf(stderr, "HPP: pushed %d\n", size);
4086: #endif
4087:
1.34 daniel 4088: if ((terminate) || (ctxt->input->buf->buffer->use > 80))
4089: htmlParseTryOrFinish(ctxt, terminate);
1.31 daniel 4090: } else if (ctxt->instate != XML_PARSER_EOF)
1.32 daniel 4091: htmlParseTryOrFinish(ctxt, terminate);
1.31 daniel 4092: if (terminate) {
4093: if ((ctxt->instate != XML_PARSER_EOF) &&
4094: (ctxt->instate != XML_PARSER_EPILOG) &&
4095: (ctxt->instate != XML_PARSER_MISC)) {
4096: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
4097: ctxt->sax->error(ctxt->userData,
4098: "Extra content at the end of the document\n");
4099: ctxt->wellFormed = 0;
4100: ctxt->errNo = XML_ERR_DOCUMENT_END;
4101: }
4102: if (ctxt->instate != XML_PARSER_EOF) {
4103: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
4104: ctxt->sax->endDocument(ctxt->userData);
4105: }
4106: ctxt->instate = XML_PARSER_EOF;
4107: }
4108: return((xmlParserErrors) ctxt->errNo);
4109: }
4110:
4111: /************************************************************************
4112: * *
4113: * User entry points *
4114: * *
4115: ************************************************************************/
4116:
4117: /**
4118: * htmlCreatePushParserCtxt :
4119: * @sax: a SAX handler
4120: * @user_data: The user data returned on SAX callbacks
4121: * @chunk: a pointer to an array of chars
4122: * @size: number of chars in the array
4123: * @filename: an optional file name or URI
4124: * @enc: an optional encoding
4125: *
4126: * Create a parser context for using the HTML parser in push mode
4127: * To allow content encoding detection, @size should be >= 4
4128: * The value of @filename is used for fetching external entities
4129: * and error/warning reports.
4130: *
4131: * Returns the new parser context or NULL
4132: */
4133: htmlParserCtxtPtr
4134: htmlCreatePushParserCtxt(htmlSAXHandlerPtr sax, void *user_data,
4135: const char *chunk, int size, const char *filename,
4136: xmlCharEncoding enc) {
4137: htmlParserCtxtPtr ctxt;
4138: htmlParserInputPtr inputStream;
4139: xmlParserInputBufferPtr buf;
4140:
4141: buf = xmlAllocParserInputBuffer(enc);
4142: if (buf == NULL) return(NULL);
4143:
4144: ctxt = (htmlParserCtxtPtr) xmlMalloc(sizeof(htmlParserCtxt));
4145: if (ctxt == NULL) {
4146: xmlFree(buf);
4147: return(NULL);
4148: }
4149: memset(ctxt, 0, sizeof(htmlParserCtxt));
4150: htmlInitParserCtxt(ctxt);
4151: if (sax != NULL) {
4152: if (ctxt->sax != &htmlDefaultSAXHandler)
4153: xmlFree(ctxt->sax);
4154: ctxt->sax = (htmlSAXHandlerPtr) xmlMalloc(sizeof(htmlSAXHandler));
4155: if (ctxt->sax == NULL) {
4156: xmlFree(buf);
4157: xmlFree(ctxt);
4158: return(NULL);
4159: }
4160: memcpy(ctxt->sax, sax, sizeof(htmlSAXHandler));
4161: if (user_data != NULL)
4162: ctxt->userData = user_data;
4163: }
4164: if (filename == NULL) {
4165: ctxt->directory = NULL;
4166: } else {
4167: ctxt->directory = xmlParserGetDirectory(filename);
4168: }
4169:
4170: inputStream = htmlNewInputStream(ctxt);
4171: if (inputStream == NULL) {
4172: xmlFreeParserCtxt(ctxt);
4173: return(NULL);
4174: }
4175:
4176: if (filename == NULL)
4177: inputStream->filename = NULL;
4178: else
4179: inputStream->filename = xmlMemStrdup(filename);
4180: inputStream->buf = buf;
4181: inputStream->base = inputStream->buf->buffer->content;
4182: inputStream->cur = inputStream->buf->buffer->content;
4183:
4184: inputPush(ctxt, inputStream);
4185:
4186: if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) &&
4187: (ctxt->input->buf != NULL)) {
4188: xmlParserInputBufferPush(ctxt->input->buf, size, chunk);
4189: #ifdef DEBUG_PUSH
4190: fprintf(stderr, "HPP: pushed %d\n", size);
4191: #endif
4192: }
4193:
4194: return(ctxt);
4195: }
1.1 daniel 4196:
4197: /**
4198: * htmlSAXParseDoc :
1.14 daniel 4199: * @cur: a pointer to an array of xmlChar
1.1 daniel 4200: * @encoding: a free form C string describing the HTML document encoding, or NULL
4201: * @sax: the SAX handler block
4202: * @userData: if using SAX, this pointer will be provided on callbacks.
4203: *
4204: * parse an HTML in-memory document and build a tree.
4205: * It use the given SAX function block to handle the parsing callback.
4206: * If sax is NULL, fallback to the default DOM tree building routines.
4207: *
4208: * Returns the resulting document tree
4209: */
4210:
4211: htmlDocPtr
1.14 daniel 4212: htmlSAXParseDoc(xmlChar *cur, const char *encoding, htmlSAXHandlerPtr sax, void *userData) {
1.1 daniel 4213: htmlDocPtr ret;
4214: htmlParserCtxtPtr ctxt;
4215:
4216: if (cur == NULL) return(NULL);
4217:
4218:
4219: ctxt = htmlCreateDocParserCtxt(cur, encoding);
4220: if (ctxt == NULL) return(NULL);
4221: if (sax != NULL) {
4222: ctxt->sax = sax;
4223: ctxt->userData = userData;
4224: }
4225:
4226: htmlParseDocument(ctxt);
4227: ret = ctxt->myDoc;
4228: if (sax != NULL) {
4229: ctxt->sax = NULL;
4230: ctxt->userData = NULL;
4231: }
4232: htmlFreeParserCtxt(ctxt);
4233:
4234: return(ret);
4235: }
4236:
4237: /**
4238: * htmlParseDoc :
1.14 daniel 4239: * @cur: a pointer to an array of xmlChar
1.1 daniel 4240: * @encoding: a free form C string describing the HTML document encoding, or NULL
4241: *
4242: * parse an HTML in-memory document and build a tree.
4243: *
4244: * Returns the resulting document tree
4245: */
4246:
4247: htmlDocPtr
1.14 daniel 4248: htmlParseDoc(xmlChar *cur, const char *encoding) {
1.1 daniel 4249: return(htmlSAXParseDoc(cur, encoding, NULL, NULL));
4250: }
4251:
4252:
4253: /**
4254: * htmlCreateFileParserCtxt :
4255: * @filename: the filename
4256: * @encoding: a free form C string describing the HTML document encoding, or NULL
4257: *
4258: * Create a parser context for a file content.
4259: * Automatic support for ZLIB/Compress compressed document is provided
4260: * by default if found at compile-time.
4261: *
4262: * Returns the new parser context or NULL
4263: */
4264: htmlParserCtxtPtr
4265: htmlCreateFileParserCtxt(const char *filename, const char *encoding)
4266: {
4267: htmlParserCtxtPtr ctxt;
4268: htmlParserInputPtr inputStream;
1.5 daniel 4269: xmlParserInputBufferPtr buf;
1.1 daniel 4270: /* htmlCharEncoding enc; */
4271:
1.5 daniel 4272: buf = xmlParserInputBufferCreateFilename(filename, XML_CHAR_ENCODING_NONE);
4273: if (buf == NULL) return(NULL);
1.1 daniel 4274:
1.11 daniel 4275: ctxt = (htmlParserCtxtPtr) xmlMalloc(sizeof(htmlParserCtxt));
1.1 daniel 4276: if (ctxt == NULL) {
4277: perror("malloc");
4278: return(NULL);
4279: }
1.19 daniel 4280: memset(ctxt, 0, sizeof(htmlParserCtxt));
1.1 daniel 4281: htmlInitParserCtxt(ctxt);
1.11 daniel 4282: inputStream = (htmlParserInputPtr) xmlMalloc(sizeof(htmlParserInput));
1.1 daniel 4283: if (inputStream == NULL) {
4284: perror("malloc");
1.11 daniel 4285: xmlFree(ctxt);
1.1 daniel 4286: return(NULL);
4287: }
1.19 daniel 4288: memset(inputStream, 0, sizeof(htmlParserInput));
1.1 daniel 4289:
1.11 daniel 4290: inputStream->filename = xmlMemStrdup(filename);
1.1 daniel 4291: inputStream->line = 1;
4292: inputStream->col = 1;
1.5 daniel 4293: inputStream->buf = buf;
1.21 daniel 4294: inputStream->directory = NULL;
1.1 daniel 4295:
1.5 daniel 4296: inputStream->base = inputStream->buf->buffer->content;
4297: inputStream->cur = inputStream->buf->buffer->content;
4298: inputStream->free = NULL;
1.1 daniel 4299:
4300: inputPush(ctxt, inputStream);
4301: return(ctxt);
4302: }
4303:
4304: /**
4305: * htmlSAXParseFile :
4306: * @filename: the filename
4307: * @encoding: a free form C string describing the HTML document encoding, or NULL
4308: * @sax: the SAX handler block
4309: * @userData: if using SAX, this pointer will be provided on callbacks.
4310: *
4311: * parse an HTML file and build a tree. Automatic support for ZLIB/Compress
4312: * compressed document is provided by default if found at compile-time.
4313: * It use the given SAX function block to handle the parsing callback.
4314: * If sax is NULL, fallback to the default DOM tree building routines.
4315: *
4316: * Returns the resulting document tree
4317: */
4318:
4319: htmlDocPtr
4320: htmlSAXParseFile(const char *filename, const char *encoding, htmlSAXHandlerPtr sax,
4321: void *userData) {
4322: htmlDocPtr ret;
4323: htmlParserCtxtPtr ctxt;
1.57 veillard 4324: htmlSAXHandlerPtr oldsax = NULL;
1.1 daniel 4325:
4326: ctxt = htmlCreateFileParserCtxt(filename, encoding);
4327: if (ctxt == NULL) return(NULL);
4328: if (sax != NULL) {
1.55 veillard 4329: oldsax = ctxt->sax;
1.1 daniel 4330: ctxt->sax = sax;
4331: ctxt->userData = userData;
4332: }
4333:
4334: htmlParseDocument(ctxt);
4335:
4336: ret = ctxt->myDoc;
4337: if (sax != NULL) {
1.55 veillard 4338: ctxt->sax = oldsax;
1.1 daniel 4339: ctxt->userData = NULL;
4340: }
4341: htmlFreeParserCtxt(ctxt);
4342:
4343: return(ret);
4344: }
4345:
4346: /**
4347: * htmlParseFile :
4348: * @filename: the filename
4349: * @encoding: a free form C string describing the HTML document encoding, or NULL
4350: *
4351: * parse an HTML file and build a tree. Automatic support for ZLIB/Compress
4352: * compressed document is provided by default if found at compile-time.
4353: *
4354: * Returns the resulting document tree
4355: */
4356:
4357: htmlDocPtr
4358: htmlParseFile(const char *filename, const char *encoding) {
4359: return(htmlSAXParseFile(filename, encoding, NULL, NULL));
4360: }
1.39 daniel 4361:
4362: #endif /* LIBXML_HTML_ENABLED */
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