Annotation of XML/HTMLparser.c, revision 1.27
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
10: #define HAVE_FCNTL_H
11: #include <io.h>
12: #else
1.13 daniel 13: #include "config.h"
1.1 daniel 14: #endif
1.13 daniel 15:
1.1 daniel 16: #include <stdio.h>
1.13 daniel 17: #include <string.h> /* for memset() only */
18: #ifdef HAVE_CTYPE_H
1.1 daniel 19: #include <ctype.h>
1.13 daniel 20: #endif
21: #ifdef HAVE_STDLIB_H
1.1 daniel 22: #include <stdlib.h>
1.13 daniel 23: #endif
24: #ifdef HAVE_SYS_STAT_H
1.1 daniel 25: #include <sys/stat.h>
1.13 daniel 26: #endif
1.1 daniel 27: #ifdef HAVE_FCNTL_H
28: #include <fcntl.h>
29: #endif
30: #ifdef HAVE_UNISTD_H
31: #include <unistd.h>
32: #endif
33: #ifdef HAVE_ZLIB_H
34: #include <zlib.h>
35: #endif
36:
1.11 daniel 37: #include "xmlmemory.h"
1.1 daniel 38: #include "tree.h"
39: #include "HTMLparser.h"
40: #include "entities.h"
41: #include "encoding.h"
42: #include "valid.h"
43: #include "parserInternals.h"
1.5 daniel 44: #include "xmlIO.h"
45:
46: #define HTML_MAX_NAMELEN 1000
47: #define INPUT_CHUNK 50
1.1 daniel 48:
49: /* #define DEBUG */
50:
51: /************************************************************************
52: * *
53: * Parser stacks related functions and macros *
54: * *
55: ************************************************************************/
56:
57: /*
58: * Generic function for accessing stacks in the Parser Context
59: */
60:
61: #define PUSH_AND_POP(type, name) \
62: int html##name##Push(htmlParserCtxtPtr ctxt, type value) { \
63: if (ctxt->name##Nr >= ctxt->name##Max) { \
64: ctxt->name##Max *= 2; \
1.11 daniel 65: ctxt->name##Tab = (void *) xmlRealloc(ctxt->name##Tab, \
1.1 daniel 66: ctxt->name##Max * sizeof(ctxt->name##Tab[0])); \
67: if (ctxt->name##Tab == NULL) { \
68: fprintf(stderr, "realloc failed !\n"); \
69: exit(1); \
70: } \
71: } \
72: ctxt->name##Tab[ctxt->name##Nr] = value; \
73: ctxt->name = value; \
74: return(ctxt->name##Nr++); \
75: } \
76: type html##name##Pop(htmlParserCtxtPtr ctxt) { \
77: type ret; \
1.18 daniel 78: if (ctxt->name##Nr < 0) return(0); \
1.1 daniel 79: ctxt->name##Nr--; \
1.18 daniel 80: if (ctxt->name##Nr < 0) return(0); \
1.1 daniel 81: if (ctxt->name##Nr > 0) \
82: ctxt->name = ctxt->name##Tab[ctxt->name##Nr - 1]; \
83: else \
84: ctxt->name = NULL; \
85: ret = ctxt->name##Tab[ctxt->name##Nr]; \
86: ctxt->name##Tab[ctxt->name##Nr] = 0; \
87: return(ret); \
88: } \
89:
90: PUSH_AND_POP(xmlNodePtr, node)
1.15 daniel 91: PUSH_AND_POP(xmlChar*, name)
1.1 daniel 92:
93: /*
94: * Macros for accessing the content. Those should be used only by the parser,
95: * and not exported.
96: *
97: * Dirty macros, i.e. one need to make assumption on the context to use them
98: *
1.14 daniel 99: * CUR_PTR return the current pointer to the xmlChar to be parsed.
100: * CUR returns the current xmlChar value, i.e. a 8 bit value if compiled
1.1 daniel 101: * in ISO-Latin or UTF-8, and the current 16 bit value if compiled
102: * in UNICODE mode. This should be used internally by the parser
103: * only to compare to ASCII values otherwise it would break when
104: * running with UTF-8 encoding.
1.14 daniel 105: * NXT(n) returns the n'th next xmlChar. Same as CUR is should be used only
1.1 daniel 106: * to compare on ASCII based substring.
1.14 daniel 107: * UPP(n) returns the n'th next xmlChar converted to uppercase. Same as CUR
1.1 daniel 108: * it should be used only to compare on ASCII based substring.
1.14 daniel 109: * SKIP(n) Skip n xmlChar, and must also be used only to skip ASCII defined
1.1 daniel 110: * strings within the parser.
111: *
112: * Clean macros, not dependent of an ASCII context, expect UTF-8 encoding
113: *
114: * CURRENT Returns the current char value, with the full decoding of
115: * UTF-8 if we are using this mode. It returns an int.
116: * NEXT Skip to the next character, this does the proper decoding
117: * in UTF-8 mode. It also pop-up unfinished entities on the fly.
118: * COPY(to) copy one char to *to, increment CUR_PTR and to accordingly
119: */
120:
121: #define CUR (*ctxt->input->cur)
122: #define UPPER (toupper(*ctxt->input->cur))
1.26 daniel 123: #define SKIP(val) ctxt->nbChars += (val),ctxt->input->cur += (val)
1.1 daniel 124: #define NXT(val) ctxt->input->cur[(val)]
125: #define UPP(val) (toupper(ctxt->input->cur[(val)]))
126: #define CUR_PTR ctxt->input->cur
1.5 daniel 127: #define SHRINK xmlParserInputShrink(ctxt->input)
128: #define GROW xmlParserInputGrow(ctxt->input, INPUT_CHUNK)
1.1 daniel 129:
130: #define SKIP_BLANKS \
131: while (IS_BLANK(*(ctxt->input->cur))) NEXT
132:
133: #ifndef USE_UTF_8
134: #define CURRENT (*ctxt->input->cur)
1.5 daniel 135: #define NEXT { \
136: if ((*ctxt->input->cur == 0) && \
137: (xmlParserInputGrow(ctxt->input, INPUT_CHUNK) <= 0)) { \
138: xmlPopInput(ctxt); \
139: } else { \
140: if (*(ctxt->input->cur) == '\n') { \
141: ctxt->input->line++; ctxt->input->col = 1; \
142: } else ctxt->input->col++; \
143: ctxt->input->cur++; \
1.26 daniel 144: ctxt->nbChars++; \
1.5 daniel 145: if (*ctxt->input->cur == 0) \
146: xmlParserInputGrow(ctxt->input, INPUT_CHUNK); \
147: }}
148:
149: /****************************************
1.1 daniel 150: #define NEXT ((*ctxt->input->cur) ? \
151: (((*(ctxt->input->cur) == '\n') ? \
152: (ctxt->input->line++, ctxt->input->col = 1) : \
1.5 daniel 153: (ctxt->input->col++)), \
154: (ctxt->input->cur++), \
155: ((*ctxt->input->cur) ? \
156: (xmlParserInputGrow(ctxt->input, 100), \
157: ctxt->input->cur): \
158: (ctxt->input->cur))) : \
159: ((xmlParserInputGrow(ctxt->input, 100) > 0) ? \
160: ctxt->input->cur: \
161: (xmlPopInput(ctxt), ctxt->input->cur)))
162: ****************************************/
1.1 daniel 163: #else
164: #endif
165:
166:
1.5 daniel 167:
1.1 daniel 168: /************************************************************************
169: * *
170: * The list of HTML elements and their properties *
171: * *
172: ************************************************************************/
173:
174: /*
175: * Start Tag: 1 means the start tag can be ommited
176: * End Tag: 1 means the end tag can be ommited
177: * 2 means it's forbidden (empty elements)
178: * Depr: this element is deprecated
179: * DTD: 1 means that this element is valid only in the Loose DTD
180: * 2 means that this element is valid only in the Frameset DTD
181: *
182: * Name,Start Tag,End Tag, Empty, Depr., DTD, Description
183: */
184: htmlElemDesc html40ElementTable[] = {
1.26 daniel 185: { "a", 0, 0, 0, 0, 0, "anchor " },
186: { "abbr", 0, 0, 0, 0, 0, "abbreviated form" },
187: { "acronym", 0, 0, 0, 0, 0, "" },
188: { "address", 0, 0, 0, 0, 0, "information on author " },
189: { "applet", 0, 0, 0, 1, 1, "java applet " },
190: { "area", 0, 2, 1, 0, 0, "client-side image map area " },
191: { "b", 0, 0, 0, 0, 0, "bold text style" },
192: { "base", 0, 2, 1, 0, 0, "document base uri " },
193: { "basefont", 0, 2, 1, 1, 1, "base font size " },
194: { "bdo", 0, 0, 0, 0, 0, "i18n bidi over-ride " },
195: { "big", 0, 0, 0, 0, 0, "large text style" },
196: { "blockquote", 0, 0, 0, 0, 0, "long quotation " },
197: { "body", 1, 1, 0, 0, 0, "document body " },
198: { "br", 0, 2, 1, 0, 0, "forced line break " },
199: { "button", 0, 0, 0, 0, 0, "push button " },
200: { "caption", 0, 0, 0, 0, 0, "table caption " },
201: { "center", 0, 0, 0, 1, 1, "shorthand for div align=center " },
202: { "cite", 0, 0, 0, 0, 0, "citation" },
203: { "code", 0, 0, 0, 0, 0, "computer code fragment" },
204: { "col", 0, 2, 1, 0, 0, "table column " },
205: { "colgroup", 0, 1, 0, 0, 0, "table column group " },
206: { "dd", 0, 1, 0, 0, 0, "definition description " },
207: { "del", 0, 0, 0, 0, 0, "deleted text " },
208: { "dfn", 0, 0, 0, 0, 0, "instance definition" },
209: { "dir", 0, 0, 0, 1, 1, "directory list" },
210: { "div", 0, 0, 0, 0, 0, "generic language/style container"},
211: { "dl", 0, 0, 0, 0, 0, "definition list " },
212: { "dt", 0, 1, 0, 0, 0, "definition term " },
213: { "em", 0, 0, 0, 0, 0, "emphasis" },
214: { "fieldset", 0, 0, 0, 0, 0, "form control group " },
215: { "font", 0, 0, 0, 1, 1, "local change to font " },
216: { "form", 0, 0, 0, 0, 0, "interactive form " },
217: { "frame", 0, 2, 1, 0, 2, "subwindow " },
218: { "frameset", 0, 0, 0, 0, 2, "window subdivision" },
219: { "h1", 0, 0, 0, 0, 0, "heading " },
220: { "h2", 0, 0, 0, 0, 0, "heading " },
221: { "h3", 0, 0, 0, 0, 0, "heading " },
222: { "h4", 0, 0, 0, 0, 0, "heading " },
223: { "h5", 0, 0, 0, 0, 0, "heading " },
224: { "h6", 0, 0, 0, 0, 0, "heading " },
225: { "head", 1, 1, 0, 0, 0, "document head " },
226: { "hr", 0, 2, 1, 0, 0, "horizontal rule " },
227: { "html", 1, 1, 0, 0, 0, "document root element " },
228: { "i", 0, 0, 0, 0, 0, "italic text style" },
229: { "iframe", 0, 0, 0, 0, 1, "inline subwindow " },
230: { "img", 0, 2, 1, 0, 0, "embedded image " },
231: { "input", 0, 2, 1, 0, 0, "form control " },
232: { "ins", 0, 0, 0, 0, 0, "inserted text" },
233: { "isindex", 0, 2, 1, 1, 1, "single line prompt " },
234: { "kbd", 0, 0, 0, 0, 0, "text to be entered by the user" },
235: { "label", 0, 0, 0, 0, 0, "form field label text " },
236: { "legend", 0, 0, 0, 0, 0, "fieldset legend " },
237: { "li", 0, 1, 0, 0, 0, "list item " },
238: { "link", 0, 2, 1, 0, 0, "a media-independent link " },
239: { "map", 0, 0, 0, 0, 0, "client-side image map " },
240: { "menu", 0, 0, 0, 1, 1, "menu list " },
241: { "meta", 0, 2, 1, 0, 0, "generic metainformation " },
242: { "noframes", 0, 0, 0, 0, 2, "alternate content container for non frame-based rendering " },
243: { "noscript", 0, 0, 0, 0, 0, "alternate content container for non script-based rendering " },
244: { "object", 0, 0, 0, 0, 0, "generic embedded object " },
245: { "ol", 0, 0, 0, 0, 0, "ordered list " },
246: { "optgroup", 0, 0, 0, 0, 0, "option group " },
247: { "option", 0, 1, 0, 0, 0, "selectable choice " },
248: { "p", 0, 1, 0, 0, 0, "paragraph " },
249: { "param", 0, 2, 1, 0, 0, "named property value " },
250: { "pre", 0, 0, 0, 0, 0, "preformatted text " },
251: { "q", 0, 0, 0, 0, 0, "short inline quotation " },
252: { "s", 0, 0, 0, 1, 1, "strike-through text style" },
253: { "samp", 0, 0, 0, 0, 0, "sample program output, scripts, etc." },
254: { "script", 0, 0, 0, 0, 0, "script statements " },
255: { "select", 0, 0, 0, 0, 0, "option selector " },
256: { "small", 0, 0, 0, 0, 0, "small text style" },
257: { "span", 0, 0, 0, 0, 0, "generic language/style container " },
258: { "strike", 0, 0, 0, 1, 1, "strike-through text" },
259: { "strong", 0, 0, 0, 0, 0, "strong emphasis" },
260: { "style", 0, 0, 0, 0, 0, "style info " },
261: { "sub", 0, 0, 0, 0, 0, "subscript" },
262: { "sup", 0, 0, 0, 0, 0, "superscript " },
263: { "table", 0, 0, 0, 0, 0, " " },
264: { "tbody", 1, 1, 0, 0, 0, "table body " },
265: { "td", 0, 1, 0, 0, 0, "table data cell" },
266: { "textarea", 0, 0, 0, 0, 0, "multi-line text field " },
267: { "tfoot", 0, 1, 0, 0, 0, "table footer " },
268: { "th", 0, 1, 0, 0, 0, "table header cell" },
269: { "thead", 0, 1, 0, 0, 0, "table header " },
270: { "title", 0, 0, 0, 0, 0, "document title " },
271: { "tr", 0, 1, 0, 0, 0, "table row " },
272: { "tt", 0, 0, 0, 0, 0, "teletype or monospaced text style" },
273: { "u", 0, 0, 0, 1, 1, "underlined text style" },
274: { "ul", 0, 0, 0, 0, 0, "unordered list " },
275: { "var", 0, 0, 0, 0, 0, "instance of a variable or program argument" },
1.1 daniel 276: };
277:
278: /*
279: * start tags that imply the end of a current element
280: * any tag of each line implies the end of the current element if the type of
281: * that element is in the same line
282: */
1.8 daniel 283: char *htmlEquEnd[] = {
1.26 daniel 284: "dt", "dd", "li", "option", NULL,
285: "h1", "h2", "h3", "h4", "h5", "h6", NULL,
286: "ol", "menu", "dir", "address", "pre", "listing", "xmp", NULL,
1.1 daniel 287: NULL
288: };
289: /*
290: * acording the HTML DTD, HR should be added to the 2nd line above, as it
291: * is not allowed within a H1, H2, H3, etc. But we should tolerate that case
292: * because many documents contain rules in headings...
293: */
294:
295: /*
296: * start tags that imply the end of current element
297: */
1.8 daniel 298: char *htmlStartClose[] = {
1.26 daniel 299: "form", "form", "p", "hr", "h1", "h2", "h3", "h4", "h5", "h6",
300: "dl", "ul", "ol", "menu", "dir", "address", "pre",
301: "listing", "xmp", "head", NULL,
302: "head", "p", NULL,
303: "title", "p", NULL,
304: "body", "head", "style", "link", "title", "p", NULL,
305: "li", "p", "h1", "h2", "h3", "h4", "h5", "h6", "dl", "address",
306: "pre", "listing", "xmp", "head", "li", NULL,
307: "hr", "p", "head", NULL,
308: "h1", "p", "head", NULL,
309: "h2", "p", "head", NULL,
310: "h3", "p", "head", NULL,
311: "h4", "p", "head", NULL,
312: "h5", "p", "head", NULL,
313: "h6", "p", "head", NULL,
314: "dir", "p", "head", NULL,
315: "address", "p", "head", "ul", NULL,
316: "pre", "p", "head", "ul", NULL,
317: "listing", "p", "head", NULL,
318: "xmp", "p", "head", NULL,
319: "blockquote", "p", "head", NULL,
320: "dl", "p", "dt", "menu", "dir", "address", "pre", "listing",
321: "xmp", "head", NULL,
322: "dt", "p", "menu", "dir", "address", "pre", "listing", "xmp",
323: "head", "dd", NULL,
324: "dd", "p", "menu", "dir", "address", "pre", "listing", "xmp",
325: "head", "dt", NULL,
326: "ul", "p", "head", "ol", "menu", "dir", "address", "pre",
327: "listing", "xmp", NULL,
328: "ol", "p", "head", "ul", NULL,
329: "menu", "p", "head", "ul", NULL,
330: "p", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6", NULL,
331: "div", "p", "head", NULL,
332: "noscript", "p", "head", NULL,
333: "center", "font", "b", "i", "p", "head", NULL,
334: "a", "a", NULL,
335: "caption", "p", NULL,
336: "colgroup", "caption", "colgroup", "col", "p", NULL,
337: "col", "caption", "col", "p", NULL,
338: "table", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6", "pre",
339: "listing", "xmp", "a", NULL,
340: "th", "th", "td", NULL,
341: "td", "th", "td", "p", NULL,
342: "tr", "th", "td", "tr", "caption", "col", "colgroup", "p", NULL,
343: "thead", "caption", "col", "colgroup", NULL,
344: "tfoot", "th", "td", "tr", "caption", "col", "colgroup", "thead",
345: "tbody", "p", NULL,
346: "tbody", "th", "td", "tr", "caption", "col", "colgroup", "thead",
347: "tfoot", "tbody", "p", NULL,
348: "optgroup", "option", NULL,
349: "fieldset", "legend", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6",
350: "pre", "listing", "xmp", "a", NULL,
1.1 daniel 351: NULL
352: };
353:
1.8 daniel 354: static char** htmlStartCloseIndex[100];
1.1 daniel 355: static int htmlStartCloseIndexinitialized = 0;
356:
357: /************************************************************************
358: * *
359: * functions to handle HTML specific data *
360: * *
361: ************************************************************************/
362:
363: /**
364: * htmlInitAutoClose:
365: *
366: * Initialize the htmlStartCloseIndex for fast lookup of closing tags names.
367: *
368: */
369: void
370: htmlInitAutoClose(void) {
371: int index, i = 0;
372:
373: if (htmlStartCloseIndexinitialized) return;
374:
375: for (index = 0;index < 100;index ++) htmlStartCloseIndex[index] = NULL;
376: index = 0;
377: while ((htmlStartClose[i] != NULL) && (index < 100 - 1)) {
378: htmlStartCloseIndex[index++] = &htmlStartClose[i];
379: while (htmlStartClose[i] != NULL) i++;
380: i++;
381: }
382: }
383:
384: /**
385: * htmlTagLookup:
386: * @tag: The tag name
387: *
388: * Lookup the HTML tag in the ElementTable
389: *
390: * Returns the related htmlElemDescPtr or NULL if not found.
391: */
392: htmlElemDescPtr
1.14 daniel 393: htmlTagLookup(const xmlChar *tag) {
1.1 daniel 394: int i = 0;
395:
396: for (i = 0; i < (sizeof(html40ElementTable) /
397: sizeof(html40ElementTable[0]));i++) {
1.8 daniel 398: if (!xmlStrcmp(tag, BAD_CAST html40ElementTable[i].name))
1.1 daniel 399: return(&html40ElementTable[i]);
400: }
401: return(NULL);
402: }
403:
404: /**
405: * htmlCheckAutoClose:
406: * @new: The new tag name
407: * @old: The old tag name
408: *
409: * Checks wether the new tag is one of the registered valid tags for closing old.
410: * Initialize the htmlStartCloseIndex for fast lookup of closing tags names.
411: *
412: * Returns 0 if no, 1 if yes.
413: */
414: int
1.14 daniel 415: htmlCheckAutoClose(const xmlChar *new, const xmlChar *old) {
1.1 daniel 416: int i, index;
1.8 daniel 417: char **close;
1.1 daniel 418:
419: if (htmlStartCloseIndexinitialized == 0) htmlInitAutoClose();
420:
421: /* inefficient, but not a big deal */
422: for (index = 0; index < 100;index++) {
423: close = htmlStartCloseIndex[index];
424: if (close == NULL) return(0);
1.8 daniel 425: if (!xmlStrcmp(BAD_CAST *close, new)) break;
1.1 daniel 426: }
427:
428: i = close - htmlStartClose;
429: i++;
430: while (htmlStartClose[i] != NULL) {
1.8 daniel 431: if (!xmlStrcmp(BAD_CAST htmlStartClose[i], old)) {
1.1 daniel 432: return(1);
433: }
434: i++;
435: }
436: return(0);
437: }
438:
439: /**
440: * htmlAutoClose:
441: * @ctxt: an HTML parser context
442: * @new: The new tag name
443: *
444: * The HTmL DtD allows a tag to implicitely close other tags.
445: * The list is kept in htmlStartClose array. This function is
446: * called when a new tag has been detected and generates the
447: * appropriates closes if possible/needed.
448: */
449: void
1.14 daniel 450: htmlAutoClose(htmlParserCtxtPtr ctxt, const xmlChar *new) {
1.15 daniel 451: xmlChar *oldname;
452: while ((ctxt->name != NULL) &&
453: (htmlCheckAutoClose(new, ctxt->name))) {
1.1 daniel 454: #ifdef DEBUG
1.18 daniel 455: fprintf(stderr,"htmlAutoClose: %s closes %s\n", new, ctxt->name);
1.1 daniel 456: #endif
457: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
1.15 daniel 458: ctxt->sax->endElement(ctxt->userData, ctxt->name);
1.24 daniel 459: oldname = htmlnamePop(ctxt);
1.18 daniel 460: if (oldname != NULL) {
461: #ifdef DEBUG
462: fprintf(stderr,"htmlAutoClose: popped %s\n", oldname);
463: #endif
1.17 daniel 464: xmlFree(oldname);
1.18 daniel 465: }
1.1 daniel 466: }
467: }
468:
469: /**
470: * htmlAutoCloseOnClose:
471: * @ctxt: an HTML parser context
472: * @new: The new tag name
473: *
474: * The HTmL DtD allows an ending tag to implicitely close other tags.
475: */
476: void
1.14 daniel 477: htmlAutoCloseOnClose(htmlParserCtxtPtr ctxt, const xmlChar *new) {
1.1 daniel 478: htmlElemDescPtr info;
1.15 daniel 479: xmlChar *oldname;
1.18 daniel 480: int i;
1.1 daniel 481:
1.18 daniel 482: #ifdef DEBUG
483: fprintf(stderr,"Close of %s stack: %d elements\n", new, ctxt->nameNr);
484: for (i = 0;i < ctxt->nameNr;i++)
485: fprintf(stderr,"%d : %s\n", i, ctxt->nameTab[i]);
486: #endif
487:
488: for (i = (ctxt->nameNr - 1);i >= 0;i--) {
489: if (!xmlStrcmp(new, ctxt->nameTab[i])) break;
490: }
491: if (i < 0) return;
492:
493: while (xmlStrcmp(new, ctxt->name)) {
1.15 daniel 494: info = htmlTagLookup(ctxt->name);
1.1 daniel 495: if ((info == NULL) || (info->endTag == 1)) {
496: #ifdef DEBUG
1.18 daniel 497: fprintf(stderr,"htmlAutoCloseOnClose: %s closes %s\n", new, ctxt->name);
498: #endif
499: } else {
500: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
501: ctxt->sax->error(ctxt->userData,
502: "Opening and ending tag mismatch: %s and %s\n",
503: new, ctxt->name);
504: ctxt->wellFormed = 0;
505: }
506: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
507: ctxt->sax->endElement(ctxt->userData, ctxt->name);
1.24 daniel 508: oldname = htmlnamePop(ctxt);
1.18 daniel 509: if (oldname != NULL) {
510: #ifdef DEBUG
511: fprintf(stderr,"htmlAutoCloseOnClose: popped %s\n", oldname);
1.1 daniel 512: #endif
1.18 daniel 513: xmlFree(oldname);
514: }
1.1 daniel 515: }
516: }
517:
518: /************************************************************************
519: * *
520: * The list of HTML predefined entities *
521: * *
522: ************************************************************************/
523:
524:
525: htmlEntityDesc html40EntitiesTable[] = {
526: /*
527: * the 4 absolute ones,
528: */
529: { 34, "quot", "quotation mark = APL quote, U+0022 ISOnum" },
530: { 38, "amp", "ampersand, U+0026 ISOnum" },
1.4 daniel 531: { 39, "apos", "single quote" },
1.1 daniel 532: { 60, "lt", "less-than sign, U+003C ISOnum" },
533: { 62, "gt", "greater-than sign, U+003E ISOnum" },
534:
535: /*
536: * A bunch still in the 128-255 range
537: * Replacing them depend really on the charset used.
538: */
539: { 160, "nbsp", "no-break space = non-breaking space, U+00A0 ISOnum" },
540: { 161, "iexcl","inverted exclamation mark, U+00A1 ISOnum" },
541: { 162, "cent", "cent sign, U+00A2 ISOnum" },
542: { 163, "pound","pound sign, U+00A3 ISOnum" },
543: { 164, "curren","currency sign, U+00A4 ISOnum" },
544: { 165, "yen", "yen sign = yuan sign, U+00A5 ISOnum" },
545: { 166, "brvbar","broken bar = broken vertical bar, U+00A6 ISOnum" },
546: { 167, "sect", "section sign, U+00A7 ISOnum" },
547: { 168, "uml", "diaeresis = spacing diaeresis, U+00A8 ISOdia" },
548: { 169, "copy", "copyright sign, U+00A9 ISOnum" },
549: { 170, "ordf", "feminine ordinal indicator, U+00AA ISOnum" },
550: { 171, "laquo","left-pointing double angle quotation mark = left pointing guillemet, U+00AB ISOnum" },
551: { 172, "not", "not sign, U+00AC ISOnum" },
552: { 173, "shy", "soft hyphen = discretionary hyphen, U+00AD ISOnum" },
553: { 174, "reg", "registered sign = registered trade mark sign, U+00AE ISOnum" },
554: { 175, "macr", "macron = spacing macron = overline = APL overbar, U+00AF ISOdia" },
555: { 176, "deg", "degree sign, U+00B0 ISOnum" },
556: { 177, "plusmn","plus-minus sign = plus-or-minus sign, U+00B1 ISOnum" },
557: { 178, "sup2", "superscript two = superscript digit two = squared, U+00B2 ISOnum" },
558: { 179, "sup3", "superscript three = superscript digit three = cubed, U+00B3 ISOnum" },
559: { 180, "acute","acute accent = spacing acute, U+00B4 ISOdia" },
560: { 181, "micro","micro sign, U+00B5 ISOnum" },
561: { 182, "para", "pilcrow sign = paragraph sign, U+00B6 ISOnum" },
1.7 daniel 562: { 183, "middot","middle dot = Georgian comma Greek middle dot, U+00B7 ISOnum" },
1.1 daniel 563: { 184, "cedil","cedilla = spacing cedilla, U+00B8 ISOdia" },
564: { 185, "sup1", "superscript one = superscript digit one, U+00B9 ISOnum" },
565: { 186, "ordm", "masculine ordinal indicator, U+00BA ISOnum" },
1.7 daniel 566: { 187, "raquo","right-pointing double angle quotation mark right pointing guillemet, U+00BB ISOnum" },
1.1 daniel 567: { 188, "frac14","vulgar fraction one quarter = fraction one quarter, U+00BC ISOnum" },
568: { 189, "frac12","vulgar fraction one half = fraction one half, U+00BD ISOnum" },
569: { 190, "frac34","vulgar fraction three quarters = fraction three quarters, U+00BE ISOnum" },
570: { 191, "iquest","inverted question mark = turned question mark, U+00BF ISOnum" },
571: { 192, "Agrave","latin capital letter A with grave = latin capital letter A grave, U+00C0 ISOlat1" },
572: { 193, "Aacute","latin capital letter A with acute, U+00C1 ISOlat1" },
573: { 194, "Acirc","latin capital letter A with circumflex, U+00C2 ISOlat1" },
574: { 195, "Atilde","latin capital letter A with tilde, U+00C3 ISOlat1" },
575: { 196, "Auml", "latin capital letter A with diaeresis, U+00C4 ISOlat1" },
576: { 197, "Aring","latin capital letter A with ring above = latin capital letter A ring, U+00C5 ISOlat1" },
577: { 198, "AElig","latin capital letter AE = latin capital ligature AE, U+00C6 ISOlat1" },
578: { 199, "Ccedil","latin capital letter C with cedilla, U+00C7 ISOlat1" },
579: { 200, "Egrave","latin capital letter E with grave, U+00C8 ISOlat1" },
580: { 201, "Eacute","latin capital letter E with acute, U+00C9 ISOlat1" },
581: { 202, "Ecirc","latin capital letter E with circumflex, U+00CA ISOlat1" },
582: { 203, "Euml", "latin capital letter E with diaeresis, U+00CB ISOlat1" },
583: { 204, "Igrave","latin capital letter I with grave, U+00CC ISOlat1" },
584: { 205, "Iacute","latin capital letter I with acute, U+00CD ISOlat1" },
585: { 206, "Icirc","latin capital letter I with circumflex, U+00CE ISOlat1" },
586: { 207, "Iuml", "latin capital letter I with diaeresis, U+00CF ISOlat1" },
587: { 208, "ETH", "latin capital letter ETH, U+00D0 ISOlat1" },
588: { 209, "Ntilde","latin capital letter N with tilde, U+00D1 ISOlat1" },
589: { 210, "Ograve","latin capital letter O with grave, U+00D2 ISOlat1" },
590: { 211, "Oacute","latin capital letter O with acute, U+00D3 ISOlat1" },
591: { 212, "Ocirc","latin capital letter O with circumflex, U+00D4 ISOlat1" },
592: { 213, "Otilde","latin capital letter O with tilde, U+00D5 ISOlat1" },
593: { 214, "Ouml", "latin capital letter O with diaeresis, U+00D6 ISOlat1" },
594: { 215, "times","multiplication sign, U+00D7 ISOnum" },
1.7 daniel 595: { 216, "Oslash","latin capital letter O with stroke latin capital letter O slash, U+00D8 ISOlat1" },
1.1 daniel 596: { 217, "Ugrave","latin capital letter U with grave, U+00D9 ISOlat1" },
597: { 218, "Uacute","latin capital letter U with acute, U+00DA ISOlat1" },
598: { 219, "Ucirc","latin capital letter U with circumflex, U+00DB ISOlat1" },
599: { 220, "Uuml", "latin capital letter U with diaeresis, U+00DC ISOlat1" },
600: { 221, "Yacute","latin capital letter Y with acute, U+00DD ISOlat1" },
601: { 222, "THORN","latin capital letter THORN, U+00DE ISOlat1" },
602: { 223, "szlig","latin small letter sharp s = ess-zed, U+00DF ISOlat1" },
603: { 224, "agrave","latin small letter a with grave = latin small letter a grave, U+00E0 ISOlat1" },
604: { 225, "aacute","latin small letter a with acute, U+00E1 ISOlat1" },
605: { 226, "acirc","latin small letter a with circumflex, U+00E2 ISOlat1" },
606: { 227, "atilde","latin small letter a with tilde, U+00E3 ISOlat1" },
607: { 228, "auml", "latin small letter a with diaeresis, U+00E4 ISOlat1" },
608: { 229, "aring","latin small letter a with ring above = latin small letter a ring, U+00E5 ISOlat1" },
609: { 230, "aelig","latin small letter ae = latin small ligature ae, U+00E6 ISOlat1" },
610: { 231, "ccedil","latin small letter c with cedilla, U+00E7 ISOlat1" },
611: { 232, "egrave","latin small letter e with grave, U+00E8 ISOlat1" },
612: { 233, "eacute","latin small letter e with acute, U+00E9 ISOlat1" },
613: { 234, "ecirc","latin small letter e with circumflex, U+00EA ISOlat1" },
614: { 235, "euml", "latin small letter e with diaeresis, U+00EB ISOlat1" },
615: { 236, "igrave","latin small letter i with grave, U+00EC ISOlat1" },
616: { 237, "iacute","latin small letter i with acute, U+00ED ISOlat1" },
617: { 238, "icirc","latin small letter i with circumflex, U+00EE ISOlat1" },
618: { 239, "iuml", "latin small letter i with diaeresis, U+00EF ISOlat1" },
619: { 240, "eth", "latin small letter eth, U+00F0 ISOlat1" },
620: { 241, "ntilde","latin small letter n with tilde, U+00F1 ISOlat1" },
621: { 242, "ograve","latin small letter o with grave, U+00F2 ISOlat1" },
622: { 243, "oacute","latin small letter o with acute, U+00F3 ISOlat1" },
623: { 244, "ocirc","latin small letter o with circumflex, U+00F4 ISOlat1" },
624: { 245, "otilde","latin small letter o with tilde, U+00F5 ISOlat1" },
625: { 246, "ouml", "latin small letter o with diaeresis, U+00F6 ISOlat1" },
626: { 247, "divide","division sign, U+00F7 ISOnum" },
627: { 248, "oslash","latin small letter o with stroke, = latin small letter o slash, U+00F8 ISOlat1" },
628: { 249, "ugrave","latin small letter u with grave, U+00F9 ISOlat1" },
629: { 250, "uacute","latin small letter u with acute, U+00FA ISOlat1" },
630: { 251, "ucirc","latin small letter u with circumflex, U+00FB ISOlat1" },
631: { 252, "uuml", "latin small letter u with diaeresis, U+00FC ISOlat1" },
632: { 253, "yacute","latin small letter y with acute, U+00FD ISOlat1" },
633: { 254, "thorn","latin small letter thorn with, U+00FE ISOlat1" },
634: { 255, "yuml", "latin small letter y with diaeresis, U+00FF ISOlat1" },
635:
636: /*
637: * Anything below should really be kept as entities references
638: */
639: { 402, "fnof", "latin small f with hook = function = florin, U+0192 ISOtech" },
640:
641: { 913, "Alpha","greek capital letter alpha, U+0391" },
642: { 914, "Beta", "greek capital letter beta, U+0392" },
643: { 915, "Gamma","greek capital letter gamma, U+0393 ISOgrk3" },
644: { 916, "Delta","greek capital letter delta, U+0394 ISOgrk3" },
645: { 917, "Epsilon","greek capital letter epsilon, U+0395" },
646: { 918, "Zeta", "greek capital letter zeta, U+0396" },
647: { 919, "Eta", "greek capital letter eta, U+0397" },
648: { 920, "Theta","greek capital letter theta, U+0398 ISOgrk3" },
649: { 921, "Iota", "greek capital letter iota, U+0399" },
650: { 922, "Kappa","greek capital letter kappa, U+039A" },
651: { 923, "Lambda""greek capital letter lambda, U+039B ISOgrk3" },
652: { 924, "Mu", "greek capital letter mu, U+039C" },
653: { 925, "Nu", "greek capital letter nu, U+039D" },
654: { 926, "Xi", "greek capital letter xi, U+039E ISOgrk3" },
655: { 927, "Omicron","greek capital letter omicron, U+039F" },
656: { 928, "Pi", "greek capital letter pi, U+03A0 ISOgrk3" },
657: { 929, "Rho", "greek capital letter rho, U+03A1" },
658: { 931, "Sigma","greek capital letter sigma, U+03A3 ISOgrk3" },
659: { 932, "Tau", "greek capital letter tau, U+03A4" },
660: { 933, "Upsilon","greek capital letter upsilon, U+03A5 ISOgrk3" },
661: { 934, "Phi", "greek capital letter phi, U+03A6 ISOgrk3" },
662: { 935, "Chi", "greek capital letter chi, U+03A7" },
663: { 936, "Psi", "greek capital letter psi, U+03A8 ISOgrk3" },
664: { 937, "Omega","greek capital letter omega, U+03A9 ISOgrk3" },
665:
666: { 945, "alpha","greek small letter alpha, U+03B1 ISOgrk3" },
667: { 946, "beta", "greek small letter beta, U+03B2 ISOgrk3" },
668: { 947, "gamma","greek small letter gamma, U+03B3 ISOgrk3" },
669: { 948, "delta","greek small letter delta, U+03B4 ISOgrk3" },
670: { 949, "epsilon","greek small letter epsilon, U+03B5 ISOgrk3" },
671: { 950, "zeta", "greek small letter zeta, U+03B6 ISOgrk3" },
672: { 951, "eta", "greek small letter eta, U+03B7 ISOgrk3" },
673: { 952, "theta","greek small letter theta, U+03B8 ISOgrk3" },
674: { 953, "iota", "greek small letter iota, U+03B9 ISOgrk3" },
675: { 954, "kappa","greek small letter kappa, U+03BA ISOgrk3" },
676: { 955, "lambda","greek small letter lambda, U+03BB ISOgrk3" },
677: { 956, "mu", "greek small letter mu, U+03BC ISOgrk3" },
678: { 957, "nu", "greek small letter nu, U+03BD ISOgrk3" },
679: { 958, "xi", "greek small letter xi, U+03BE ISOgrk3" },
680: { 959, "omicron","greek small letter omicron, U+03BF NEW" },
681: { 960, "pi", "greek small letter pi, U+03C0 ISOgrk3" },
682: { 961, "rho", "greek small letter rho, U+03C1 ISOgrk3" },
683: { 962, "sigmaf","greek small letter final sigma, U+03C2 ISOgrk3" },
684: { 963, "sigma","greek small letter sigma, U+03C3 ISOgrk3" },
685: { 964, "tau", "greek small letter tau, U+03C4 ISOgrk3" },
686: { 965, "upsilon","greek small letter upsilon, U+03C5 ISOgrk3" },
687: { 966, "phi", "greek small letter phi, U+03C6 ISOgrk3" },
688: { 967, "chi", "greek small letter chi, U+03C7 ISOgrk3" },
689: { 968, "psi", "greek small letter psi, U+03C8 ISOgrk3" },
690: { 969, "omega","greek small letter omega, U+03C9 ISOgrk3" },
691: { 977, "thetasym","greek small letter theta symbol, U+03D1 NEW" },
692: { 978, "upsih","greek upsilon with hook symbol, U+03D2 NEW" },
693: { 982, "piv", "greek pi symbol, U+03D6 ISOgrk3" },
694:
695: { 8226, "bull", "bullet = black small circle, U+2022 ISOpub" },
696: { 8230, "hellip","horizontal ellipsis = three dot leader, U+2026 ISOpub" },
697: { 8242, "prime","prime = minutes = feet, U+2032 ISOtech" },
698: { 8243, "Prime","double prime = seconds = inches, U+2033 ISOtech" },
699: { 8254, "oline","overline = spacing overscore, U+203E NEW" },
700: { 8260, "frasl","fraction slash, U+2044 NEW" },
701:
1.7 daniel 702: { 8472, "weierp","script capital P = power set = Weierstrass p, U+2118 ISOamso" },
1.1 daniel 703: { 8465, "image","blackletter capital I = imaginary part, U+2111 ISOamso" },
704: { 8476, "real", "blackletter capital R = real part symbol, U+211C ISOamso" },
705: { 8482, "trade","trade mark sign, U+2122 ISOnum" },
706: { 8501, "alefsym","alef symbol = first transfinite cardinal, U+2135 NEW" },
707: { 8592, "larr", "leftwards arrow, U+2190 ISOnum" },
708: { 8593, "uarr", "upwards arrow, U+2191 ISOnum" },
709: { 8594, "rarr", "rightwards arrow, U+2192 ISOnum" },
710: { 8595, "darr", "downwards arrow, U+2193 ISOnum" },
711: { 8596, "harr", "left right arrow, U+2194 ISOamsa" },
712: { 8629, "crarr","downwards arrow with corner leftwards = carriage return, U+21B5 NEW" },
713: { 8656, "lArr", "leftwards double arrow, U+21D0 ISOtech" },
714: { 8657, "uArr", "upwards double arrow, U+21D1 ISOamsa" },
715: { 8658, "rArr", "rightwards double arrow, U+21D2 ISOtech" },
716: { 8659, "dArr", "downwards double arrow, U+21D3 ISOamsa" },
717: { 8660, "hArr", "left right double arrow, U+21D4 ISOamsa" },
718:
719:
720: { 8704, "forall","for all, U+2200 ISOtech" },
721: { 8706, "part", "partial differential, U+2202 ISOtech" },
722: { 8707, "exist","there exists, U+2203 ISOtech" },
723: { 8709, "empty","empty set = null set = diameter, U+2205 ISOamso" },
724: { 8711, "nabla","nabla = backward difference, U+2207 ISOtech" },
725: { 8712, "isin", "element of, U+2208 ISOtech" },
726: { 8713, "notin","not an element of, U+2209 ISOtech" },
727: { 8715, "ni", "contains as member, U+220B ISOtech" },
728: { 8719, "prod", "n-ary product = product sign, U+220F ISOamsb" },
729: { 8721, "sum", "n-ary sumation, U+2211 ISOamsb" },
730: { 8722, "minus","minus sign, U+2212 ISOtech" },
731: { 8727, "lowast","asterisk operator, U+2217 ISOtech" },
732: { 8730, "radic","square root = radical sign, U+221A ISOtech" },
733: { 8733, "prop", "proportional to, U+221D ISOtech" },
734: { 8734, "infin","infinity, U+221E ISOtech" },
735: { 8736, "ang", "angle, U+2220 ISOamso" },
736: { 8743, "and", "logical and = wedge, U+2227 ISOtech" },
737: { 8744, "or", "logical or = vee, U+2228 ISOtech" },
738: { 8745, "cap", "intersection = cap, U+2229 ISOtech" },
739: { 8746, "cup", "union = cup, U+222A ISOtech" },
740: { 8747, "int", "integral, U+222B ISOtech" },
741: { 8756, "there4","therefore, U+2234 ISOtech" },
742: { 8764, "sim", "tilde operator = varies with = similar to, U+223C ISOtech" },
743: { 8773, "cong", "approximately equal to, U+2245 ISOtech" },
744: { 8776, "asymp","almost equal to = asymptotic to, U+2248 ISOamsr" },
745: { 8800, "ne", "not equal to, U+2260 ISOtech" },
746: { 8801, "equiv","identical to, U+2261 ISOtech" },
747: { 8804, "le", "less-than or equal to, U+2264 ISOtech" },
748: { 8805, "ge", "greater-than or equal to, U+2265 ISOtech" },
749: { 8834, "sub", "subset of, U+2282 ISOtech" },
750: { 8835, "sup", "superset of, U+2283 ISOtech" },
751: { 8836, "nsub", "not a subset of, U+2284 ISOamsn" },
752: { 8838, "sube", "subset of or equal to, U+2286 ISOtech" },
753: { 8839, "supe", "superset of or equal to, U+2287 ISOtech" },
754: { 8853, "oplus","circled plus = direct sum, U+2295 ISOamsb" },
755: { 8855, "otimes","circled times = vector product, U+2297 ISOamsb" },
756: { 8869, "perp", "up tack = orthogonal to = perpendicular, U+22A5 ISOtech" },
757: { 8901, "sdot", "dot operator, U+22C5 ISOamsb" },
758: { 8968, "lceil","left ceiling = apl upstile, U+2308 ISOamsc" },
759: { 8969, "rceil","right ceiling, U+2309 ISOamsc" },
760: { 8970, "lfloor","left floor = apl downstile, U+230A ISOamsc" },
761: { 8971, "rfloor","right floor, U+230B ISOamsc" },
762: { 9001, "lang", "left-pointing angle bracket = bra, U+2329 ISOtech" },
763: { 9002, "rang", "right-pointing angle bracket = ket, U+232A ISOtech" },
764: { 9674, "loz", "lozenge, U+25CA ISOpub" },
765:
766: { 9824, "spades","black spade suit, U+2660 ISOpub" },
767: { 9827, "clubs","black club suit = shamrock, U+2663 ISOpub" },
768: { 9829, "hearts","black heart suit = valentine, U+2665 ISOpub" },
769: { 9830, "diams","black diamond suit, U+2666 ISOpub" },
770:
771: { 338, "OElig","latin capital ligature OE, U+0152 ISOlat2" },
772: { 339, "oelig","latin small ligature oe, U+0153 ISOlat2" },
773: { 352, "Scaron","latin capital letter S with caron, U+0160 ISOlat2" },
774: { 353, "scaron","latin small letter s with caron, U+0161 ISOlat2" },
775: { 376, "Yuml", "latin capital letter Y with diaeresis, U+0178 ISOlat2" },
776: { 710, "circ", "modifier letter circumflex accent, U+02C6 ISOpub" },
777: { 732, "tilde","small tilde, U+02DC ISOdia" },
778:
779: { 8194, "ensp", "en space, U+2002 ISOpub" },
780: { 8195, "emsp", "em space, U+2003 ISOpub" },
781: { 8201, "thinsp","thin space, U+2009 ISOpub" },
782: { 8204, "zwnj", "zero width non-joiner, U+200C NEW RFC 2070" },
783: { 8205, "zwj", "zero width joiner, U+200D NEW RFC 2070" },
784: { 8206, "lrm", "left-to-right mark, U+200E NEW RFC 2070" },
785: { 8207, "rlm", "right-to-left mark, U+200F NEW RFC 2070" },
786: { 8211, "ndash","en dash, U+2013 ISOpub" },
787: { 8212, "mdash","em dash, U+2014 ISOpub" },
788: { 8216, "lsquo","left single quotation mark, U+2018 ISOnum" },
789: { 8217, "rsquo","right single quotation mark, U+2019 ISOnum" },
790: { 8218, "sbquo","single low-9 quotation mark, U+201A NEW" },
791: { 8220, "ldquo","left double quotation mark, U+201C ISOnum" },
792: { 8221, "rdquo","right double quotation mark, U+201D ISOnum" },
793: { 8222, "bdquo","double low-9 quotation mark, U+201E NEW" },
794: { 8224, "dagger","dagger, U+2020 ISOpub" },
795: { 8225, "Dagger","double dagger, U+2021 ISOpub" },
796: { 8240, "permil","per mille sign, U+2030 ISOtech" },
797: { 8249, "lsaquo","single left-pointing angle quotation mark, U+2039 ISO proposed" },
1.7 daniel 798: { 8250, "rsaquo","single right-pointing angle quotation mark, U+203A ISO proposed" },
1.1 daniel 799: { 8364, "euro", "euro sign, U+20AC NEW" }
800: };
801:
802: /************************************************************************
803: * *
804: * Commodity functions to handle entities *
805: * *
806: ************************************************************************/
807:
808: /*
809: * Macro used to grow the current buffer.
810: */
811: #define growBuffer(buffer) { \
812: buffer##_size *= 2; \
1.14 daniel 813: buffer = (xmlChar *) xmlRealloc(buffer, buffer##_size * sizeof(xmlChar)); \
1.1 daniel 814: if (buffer == NULL) { \
815: perror("realloc failed"); \
816: exit(1); \
817: } \
818: }
819:
820: /**
821: * htmlEntityLookup:
822: * @name: the entity name
823: *
824: * Lookup the given entity in EntitiesTable
825: *
826: * TODO: the linear scan is really ugly, an hash table is really needed.
827: *
828: * Returns the associated htmlEntityDescPtr if found, NULL otherwise.
829: */
830: htmlEntityDescPtr
1.14 daniel 831: htmlEntityLookup(const xmlChar *name) {
1.1 daniel 832: int i;
833:
834: for (i = 0;i < (sizeof(html40EntitiesTable)/
835: sizeof(html40EntitiesTable[0]));i++) {
1.8 daniel 836: if (!xmlStrcmp(name, BAD_CAST html40EntitiesTable[i].name)) {
1.1 daniel 837: #ifdef DEBUG
1.18 daniel 838: fprintf(stderr,"Found entity %s\n", name);
1.1 daniel 839: #endif
840: return(&html40EntitiesTable[i]);
841: }
842: }
843: return(NULL);
844: }
845:
846:
847: /**
848: * htmlDecodeEntities:
849: * @ctxt: the parser context
850: * @len: the len to decode (in bytes !), -1 for no size limit
1.14 daniel 851: * @end: an end marker xmlChar, 0 if none
852: * @end2: an end marker xmlChar, 0 if none
853: * @end3: an end marker xmlChar, 0 if none
1.1 daniel 854: *
855: * Subtitute the HTML entities by their value
856: *
1.19 daniel 857: * DEPRECATED !!!!
1.1 daniel 858: *
859: * Returns A newly allocated string with the substitution done. The caller
860: * must deallocate it !
861: */
1.14 daniel 862: xmlChar *
1.1 daniel 863: htmlDecodeEntities(htmlParserCtxtPtr ctxt, int len,
1.14 daniel 864: xmlChar end, xmlChar end2, xmlChar end3) {
865: xmlChar *buffer = NULL;
1.1 daniel 866: int buffer_size = 0;
1.14 daniel 867: xmlChar *out = NULL;
868: xmlChar *name = NULL;
1.1 daniel 869:
1.14 daniel 870: xmlChar *cur = NULL;
1.1 daniel 871: htmlEntityDescPtr ent;
1.5 daniel 872: int nbchars = 0;
1.1 daniel 873: unsigned int max = (unsigned int) len;
874:
875: /*
876: * allocate a translation buffer.
877: */
878: buffer_size = 1000;
1.14 daniel 879: buffer = (xmlChar *) xmlMalloc(buffer_size * sizeof(xmlChar));
1.1 daniel 880: if (buffer == NULL) {
881: perror("htmlDecodeEntities: malloc failed");
882: return(NULL);
883: }
884: out = buffer;
885:
886: /*
887: * Ok loop until we reach one of the ending char or a size limit.
888: */
1.5 daniel 889: while ((nbchars < max) && (CUR != end) &&
1.1 daniel 890: (CUR != end2) && (CUR != end3)) {
891:
892: if (CUR == '&') {
893: if (NXT(1) == '#') {
894: int val = htmlParseCharRef(ctxt);
1.8 daniel 895: /* invalid for UTF-8 variable encoding !!!!! */
1.1 daniel 896: *out++ = val;
1.5 daniel 897: nbchars += 3; /* !!!! */
1.1 daniel 898: } else {
899: ent = htmlParseEntityRef(ctxt, &name);
900: if (name != NULL) {
901: if ((ent == NULL) || (ent->value <= 0) ||
902: (ent->value >= 255)) {
903: *out++ = '&';
904: cur = name;
905: while (*cur != 0) {
906: if (out - buffer > buffer_size - 100) {
907: int index = out - buffer;
908:
909: growBuffer(buffer);
910: out = &buffer[index];
911: }
912: *out++ = *cur++;
913: }
914: *out++ = ';';
915: } else {
1.8 daniel 916: /* invalid for UTF-8 variable encoding !!!!! */
1.14 daniel 917: *out++ = (xmlChar)ent->value;
1.1 daniel 918: if (out - buffer > buffer_size - 100) {
919: int index = out - buffer;
920:
921: growBuffer(buffer);
922: out = &buffer[index];
923: }
924: }
1.5 daniel 925: nbchars += 2 + xmlStrlen(name);
1.11 daniel 926: xmlFree(name);
1.1 daniel 927: }
928: }
929: } else {
1.8 daniel 930: /* invalid for UTF-8 , use COPY(out); !!!!! */
1.1 daniel 931: *out++ = CUR;
1.5 daniel 932: nbchars++;
1.1 daniel 933: if (out - buffer > buffer_size - 100) {
934: int index = out - buffer;
935:
936: growBuffer(buffer);
937: out = &buffer[index];
938: }
939: NEXT;
940: }
941: }
942: *out++ = 0;
943: return(buffer);
944: }
945:
946:
947: /************************************************************************
948: * *
949: * Commodity functions to handle encodings *
950: * *
951: ************************************************************************/
952:
953: /**
954: * htmlSwitchEncoding:
955: * @ctxt: the parser context
956: * @len: the len of @cur
957: *
958: * change the input functions when discovering the character encoding
959: * of a given entity.
960: *
961: */
962: void
963: htmlSwitchEncoding(htmlParserCtxtPtr ctxt, xmlCharEncoding enc)
964: {
965: switch (enc) {
966: case XML_CHAR_ENCODING_ERROR:
967: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
968: ctxt->sax->error(ctxt->userData, "encoding unknown\n");
969: ctxt->wellFormed = 0;
970: break;
971: case XML_CHAR_ENCODING_NONE:
972: /* let's assume it's UTF-8 without the XML decl */
973: return;
974: case XML_CHAR_ENCODING_UTF8:
975: /* default encoding, no conversion should be needed */
976: return;
977: case XML_CHAR_ENCODING_UTF16LE:
978: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
979: ctxt->sax->error(ctxt->userData,
980: "char encoding UTF16 little endian not supported\n");
981: break;
982: case XML_CHAR_ENCODING_UTF16BE:
983: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
984: ctxt->sax->error(ctxt->userData,
985: "char encoding UTF16 big endian not supported\n");
986: break;
987: case XML_CHAR_ENCODING_UCS4LE:
988: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
989: ctxt->sax->error(ctxt->userData,
990: "char encoding USC4 little endian not supported\n");
991: break;
992: case XML_CHAR_ENCODING_UCS4BE:
993: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
994: ctxt->sax->error(ctxt->userData,
995: "char encoding USC4 big endian not supported\n");
996: break;
997: case XML_CHAR_ENCODING_EBCDIC:
998: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
999: ctxt->sax->error(ctxt->userData,
1000: "char encoding EBCDIC not supported\n");
1001: break;
1002: case XML_CHAR_ENCODING_UCS4_2143:
1003: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1004: ctxt->sax->error(ctxt->userData,
1005: "char encoding UCS4 2143 not supported\n");
1006: break;
1007: case XML_CHAR_ENCODING_UCS4_3412:
1008: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1009: ctxt->sax->error(ctxt->userData,
1010: "char encoding UCS4 3412 not supported\n");
1011: break;
1012: case XML_CHAR_ENCODING_UCS2:
1013: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1014: ctxt->sax->error(ctxt->userData,
1015: "char encoding UCS2 not supported\n");
1016: break;
1017: case XML_CHAR_ENCODING_8859_1:
1018: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1019: ctxt->sax->error(ctxt->userData,
1020: "char encoding ISO_8859_1 ISO Latin 1 not supported\n");
1021: break;
1022: case XML_CHAR_ENCODING_8859_2:
1023: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1024: ctxt->sax->error(ctxt->userData,
1025: "char encoding ISO_8859_2 ISO Latin 2 not supported\n");
1026: break;
1027: case XML_CHAR_ENCODING_8859_3:
1028: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1029: ctxt->sax->error(ctxt->userData,
1030: "char encoding ISO_8859_3 not supported\n");
1031: break;
1032: case XML_CHAR_ENCODING_8859_4:
1033: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1034: ctxt->sax->error(ctxt->userData,
1035: "char encoding ISO_8859_4 not supported\n");
1036: break;
1037: case XML_CHAR_ENCODING_8859_5:
1038: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1039: ctxt->sax->error(ctxt->userData,
1040: "char encoding ISO_8859_5 not supported\n");
1041: break;
1042: case XML_CHAR_ENCODING_8859_6:
1043: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1044: ctxt->sax->error(ctxt->userData,
1045: "char encoding ISO_8859_6 not supported\n");
1046: break;
1047: case XML_CHAR_ENCODING_8859_7:
1048: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1049: ctxt->sax->error(ctxt->userData,
1050: "char encoding ISO_8859_7 not supported\n");
1051: break;
1052: case XML_CHAR_ENCODING_8859_8:
1053: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1054: ctxt->sax->error(ctxt->userData,
1055: "char encoding ISO_8859_8 not supported\n");
1056: break;
1057: case XML_CHAR_ENCODING_8859_9:
1058: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1059: ctxt->sax->error(ctxt->userData,
1060: "char encoding ISO_8859_9 not supported\n");
1061: break;
1062: case XML_CHAR_ENCODING_2022_JP:
1063: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1064: ctxt->sax->error(ctxt->userData,
1065: "char encoding ISO-2022-JPnot supported\n");
1066: break;
1067: case XML_CHAR_ENCODING_SHIFT_JIS:
1068: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1069: ctxt->sax->error(ctxt->userData,
1070: "char encoding Shift_JISnot supported\n");
1071: break;
1072: case XML_CHAR_ENCODING_EUC_JP:
1073: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1074: ctxt->sax->error(ctxt->userData,
1075: "char encoding EUC-JPnot supported\n");
1076: break;
1077: }
1078: }
1079:
1080:
1081: /************************************************************************
1082: * *
1083: * Commodity functions, cleanup needed ? *
1084: * *
1085: ************************************************************************/
1086:
1087: /**
1088: * areBlanks:
1089: * @ctxt: an HTML parser context
1.14 daniel 1090: * @str: a xmlChar *
1.1 daniel 1091: * @len: the size of @str
1092: *
1093: * Is this a sequence of blank chars that one can ignore ?
1094: *
1095: * Returns 1 if ignorable 0 otherwise.
1096: */
1097:
1.14 daniel 1098: static int areBlanks(htmlParserCtxtPtr ctxt, const xmlChar *str, int len) {
1.1 daniel 1099: int i;
1100: xmlNodePtr lastChild;
1101:
1102: for (i = 0;i < len;i++)
1103: if (!(IS_BLANK(str[i]))) return(0);
1104:
1105: if (CUR != '<') return(0);
1106: if (ctxt->node == NULL) return(0);
1107: lastChild = xmlGetLastChild(ctxt->node);
1108: if (lastChild == NULL) {
1109: if (ctxt->node->content != NULL) return(0);
1110: } else if (xmlNodeIsText(lastChild))
1111: return(0);
1112: return(1);
1113: }
1114:
1115: /**
1116: * htmlHandleEntity:
1117: * @ctxt: an HTML parser context
1118: * @entity: an XML entity pointer.
1119: *
1120: * Default handling of an HTML entity, call the parser with the
1121: * substitution string
1122: */
1123:
1124: void
1125: htmlHandleEntity(htmlParserCtxtPtr ctxt, xmlEntityPtr entity) {
1126: int len;
1127:
1128: if (entity->content == NULL) {
1129: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1130: ctxt->sax->error(ctxt->userData, "htmlHandleEntity %s: content == NULL\n",
1131: entity->name);
1132: ctxt->wellFormed = 0;
1133: return;
1134: }
1135: len = xmlStrlen(entity->content);
1136:
1137: /*
1138: * Just handle the content as a set of chars.
1139: */
1140: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
1141: ctxt->sax->characters(ctxt->userData, entity->content, len);
1142:
1143: }
1144:
1145: /**
1146: * htmlNewDoc:
1147: * @URI: URI for the dtd, or NULL
1148: * @ExternalID: the external ID of the DTD, or NULL
1149: *
1150: * Returns a new document
1151: */
1152: htmlDocPtr
1.14 daniel 1153: htmlNewDoc(const xmlChar *URI, const xmlChar *ExternalID) {
1.1 daniel 1154: xmlDocPtr cur;
1155:
1156: /*
1157: * Allocate a new document and fill the fields.
1158: */
1.11 daniel 1159: cur = (xmlDocPtr) xmlMalloc(sizeof(xmlDoc));
1.1 daniel 1160: if (cur == NULL) {
1161: fprintf(stderr, "xmlNewDoc : malloc failed\n");
1162: return(NULL);
1163: }
1.10 daniel 1164: memset(cur, 0, sizeof(xmlDoc));
1.1 daniel 1165:
1.20 daniel 1166: cur->type = XML_HTML_DOCUMENT_NODE;
1.1 daniel 1167: cur->version = NULL;
1168: cur->intSubset = NULL;
1.8 daniel 1169: xmlCreateIntSubset(cur, BAD_CAST "HTML", ExternalID, URI);
1.1 daniel 1170: cur->name = NULL;
1171: cur->root = NULL;
1172: cur->extSubset = NULL;
1173: cur->oldNs = NULL;
1174: cur->encoding = NULL;
1175: cur->standalone = 1;
1176: cur->compression = 0;
1.12 daniel 1177: cur->ids = NULL;
1178: cur->refs = NULL;
1.1 daniel 1179: #ifndef XML_WITHOUT_CORBA
1180: cur->_private = NULL;
1181: cur->vepv = NULL;
1182: #endif
1183: return(cur);
1184: }
1185:
1186:
1187: /************************************************************************
1188: * *
1189: * The parser itself *
1190: * Relates to http://www.w3.org/TR/html40 *
1191: * *
1192: ************************************************************************/
1193:
1194: /************************************************************************
1195: * *
1196: * The parser itself *
1197: * *
1198: ************************************************************************/
1199:
1200: /**
1201: * htmlParseHTMLName:
1202: * @ctxt: an HTML parser context
1203: *
1.26 daniel 1204: * parse an HTML tag or attribute name, note that we convert it to lowercase
1.1 daniel 1205: * since HTML names are not case-sensitive.
1206: *
1207: * Returns the Tag Name parsed or NULL
1208: */
1209:
1.14 daniel 1210: xmlChar *
1.1 daniel 1211: htmlParseHTMLName(htmlParserCtxtPtr ctxt) {
1.14 daniel 1212: xmlChar *ret = NULL;
1.1 daniel 1213: int i = 0;
1.14 daniel 1214: xmlChar loc[100];
1.1 daniel 1215:
1216: if (!IS_LETTER(CUR) && (CUR != '_') &&
1217: (CUR != ':')) return(NULL);
1218:
1219: while ((i < 100) && ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)))) {
1.26 daniel 1220: if ((CUR >= 'A') && (CUR <= 'Z')) loc[i] = CUR + 0x20;
1.1 daniel 1221: else loc[i] = CUR;
1222: i++;
1223:
1224: NEXT;
1225: }
1226:
1227: ret = xmlStrndup(loc, i);
1228:
1229: return(ret);
1230: }
1231:
1232: /**
1233: * htmlParseName:
1234: * @ctxt: an HTML parser context
1235: *
1236: * parse an HTML name, this routine is case sensistive.
1237: *
1238: * Returns the Name parsed or NULL
1239: */
1240:
1.14 daniel 1241: xmlChar *
1.1 daniel 1242: htmlParseName(htmlParserCtxtPtr ctxt) {
1.14 daniel 1243: xmlChar buf[HTML_MAX_NAMELEN];
1.5 daniel 1244: int len = 0;
1.1 daniel 1245:
1.5 daniel 1246: GROW;
1247: if (!IS_LETTER(CUR) && (CUR != '_')) {
1248: return(NULL);
1249: }
1.1 daniel 1250:
1251: while ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) ||
1252: (CUR == '.') || (CUR == '-') ||
1253: (CUR == '_') || (CUR == ':') ||
1254: (IS_COMBINING(CUR)) ||
1.5 daniel 1255: (IS_EXTENDER(CUR))) {
1256: buf[len++] = CUR;
1.1 daniel 1257: NEXT;
1.5 daniel 1258: if (len >= HTML_MAX_NAMELEN) {
1259: fprintf(stderr,
1260: "htmlParseName: reached HTML_MAX_NAMELEN limit\n");
1261: while ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) ||
1262: (CUR == '.') || (CUR == '-') ||
1263: (CUR == '_') || (CUR == ':') ||
1264: (IS_COMBINING(CUR)) ||
1265: (IS_EXTENDER(CUR)))
1266: NEXT;
1267: break;
1268: }
1269: }
1270: return(xmlStrndup(buf, len));
1.1 daniel 1271: }
1272:
1273: /**
1274: * htmlParseHTMLAttribute:
1275: * @ctxt: an HTML parser context
1.19 daniel 1276: * @stop: a char stop value
1.1 daniel 1277: *
1.19 daniel 1278: * parse an HTML attribute value till the stop (quote), if
1279: * stop is 0 then it stops at the first space
1.1 daniel 1280: *
1.19 daniel 1281: * Returns the attribute parsed or NULL
1.1 daniel 1282: */
1283:
1.14 daniel 1284: xmlChar *
1.19 daniel 1285: htmlParseHTMLAttribute(htmlParserCtxtPtr ctxt, const xmlChar stop) {
1.14 daniel 1286: xmlChar buf[HTML_MAX_NAMELEN];
1.5 daniel 1287: int len = 0;
1.1 daniel 1288:
1.5 daniel 1289: GROW;
1.19 daniel 1290: while ((CUR != 0) && (CUR != stop) && (CUR != '>')) {
1291: if ((stop == 0) && (IS_BLANK(CUR))) break;
1.5 daniel 1292: buf[len++] = CUR;
1.1 daniel 1293: NEXT;
1.5 daniel 1294: if (len >= HTML_MAX_NAMELEN) {
1295: fprintf(stderr,
1296: "htmlParseHTMLAttribute: reached HTML_MAX_NAMELEN limit\n");
1297: while ((!IS_BLANK(CUR)) && (CUR != '<') &&
1.19 daniel 1298: (CUR != '>') &&
1.5 daniel 1299: (CUR != '\'') && (CUR != '"'))
1300: NEXT;
1301: break;
1302: }
1303: }
1304: return(xmlStrndup(buf, len));
1.1 daniel 1305: }
1306:
1307: /**
1308: * htmlParseNmtoken:
1309: * @ctxt: an HTML parser context
1310: *
1311: * parse an HTML Nmtoken.
1312: *
1313: * Returns the Nmtoken parsed or NULL
1314: */
1315:
1.14 daniel 1316: xmlChar *
1.1 daniel 1317: htmlParseNmtoken(htmlParserCtxtPtr ctxt) {
1.14 daniel 1318: xmlChar buf[HTML_MAX_NAMELEN];
1.5 daniel 1319: int len = 0;
1.1 daniel 1320:
1.5 daniel 1321: GROW;
1.1 daniel 1322: while ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) ||
1323: (CUR == '.') || (CUR == '-') ||
1324: (CUR == '_') || (CUR == ':') ||
1325: (IS_COMBINING(CUR)) ||
1.5 daniel 1326: (IS_EXTENDER(CUR))) {
1327: buf[len++] = CUR;
1.1 daniel 1328: NEXT;
1.5 daniel 1329: if (len >= HTML_MAX_NAMELEN) {
1330: fprintf(stderr,
1331: "htmlParseNmtoken: reached HTML_MAX_NAMELEN limit\n");
1332: while ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) ||
1333: (CUR == '.') || (CUR == '-') ||
1334: (CUR == '_') || (CUR == ':') ||
1335: (IS_COMBINING(CUR)) ||
1336: (IS_EXTENDER(CUR)))
1337: NEXT;
1338: break;
1339: }
1340: }
1341: return(xmlStrndup(buf, len));
1.1 daniel 1342: }
1343:
1344: /**
1345: * htmlParseEntityRef:
1346: * @ctxt: an HTML parser context
1347: * @str: location to store the entity name
1348: *
1349: * parse an HTML ENTITY references
1350: *
1351: * [68] EntityRef ::= '&' Name ';'
1352: *
1353: * Returns the associated htmlEntityDescPtr if found, or NULL otherwise,
1354: * if non-NULL *str will have to be freed by the caller.
1355: */
1356: htmlEntityDescPtr
1.14 daniel 1357: htmlParseEntityRef(htmlParserCtxtPtr ctxt, xmlChar **str) {
1358: xmlChar *name;
1.1 daniel 1359: htmlEntityDescPtr ent = NULL;
1360: *str = NULL;
1361:
1362: if (CUR == '&') {
1363: NEXT;
1364: name = htmlParseName(ctxt);
1365: if (name == NULL) {
1366: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1367: ctxt->sax->error(ctxt->userData, "htmlParseEntityRef: no name\n");
1368: ctxt->wellFormed = 0;
1369: } else {
1.5 daniel 1370: GROW;
1.1 daniel 1371: if (CUR == ';') {
1372: NEXT;
1373: *str = name;
1374:
1375: /*
1376: * Lookup the entity in the table.
1377: */
1378: ent = htmlEntityLookup(name);
1379: } else {
1380: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1381: ctxt->sax->error(ctxt->userData,
1382: "htmlParseEntityRef: expecting ';'\n");
1383: ctxt->wellFormed = 0;
1384: if (ctxt->sax->characters != NULL) {
1.8 daniel 1385: ctxt->sax->characters(ctxt->userData, BAD_CAST "&", 1);
1.1 daniel 1386: ctxt->sax->characters(ctxt->userData, name, xmlStrlen(name));
1387: }
1.11 daniel 1388: xmlFree(name);
1.1 daniel 1389: }
1390: }
1391: }
1392: return(ent);
1393: }
1394:
1395: /**
1396: * htmlParseAttValue:
1397: * @ctxt: an HTML parser context
1398: *
1399: * parse a value for an attribute
1400: * Note: the parser won't do substitution of entities here, this
1401: * will be handled later in xmlStringGetNodeList, unless it was
1402: * asked for ctxt->replaceEntities != 0
1403: *
1404: * Returns the AttValue parsed or NULL.
1405: */
1406:
1.14 daniel 1407: xmlChar *
1.1 daniel 1408: htmlParseAttValue(htmlParserCtxtPtr ctxt) {
1.14 daniel 1409: xmlChar *ret = NULL;
1.1 daniel 1410:
1411: if (CUR == '"') {
1412: NEXT;
1.19 daniel 1413: ret = htmlParseHTMLAttribute(ctxt, '"');
1.1 daniel 1414: if (CUR != '"') {
1415: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1416: ctxt->sax->error(ctxt->userData, "AttValue: ' expected\n");
1417: ctxt->wellFormed = 0;
1418: } else
1419: NEXT;
1420: } else if (CUR == '\'') {
1421: NEXT;
1.19 daniel 1422: ret = htmlParseHTMLAttribute(ctxt, '\'');
1.1 daniel 1423: if (CUR != '\'') {
1424: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1425: ctxt->sax->error(ctxt->userData, "AttValue: ' expected\n");
1426: ctxt->wellFormed = 0;
1427: } else
1428: NEXT;
1429: } else {
1430: /*
1431: * That's an HTMLism, the attribute value may not be quoted
1432: */
1.19 daniel 1433: ret = htmlParseHTMLAttribute(ctxt, 0);
1.1 daniel 1434: if (ret == NULL) {
1435: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1436: ctxt->sax->error(ctxt->userData, "AttValue: no value found\n");
1437: ctxt->wellFormed = 0;
1438: }
1439: }
1440: return(ret);
1441: }
1442:
1443: /**
1444: * htmlParseSystemLiteral:
1445: * @ctxt: an HTML parser context
1446: *
1447: * parse an HTML Literal
1448: *
1449: * [11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'")
1450: *
1451: * Returns the SystemLiteral parsed or NULL
1452: */
1453:
1.14 daniel 1454: xmlChar *
1.1 daniel 1455: htmlParseSystemLiteral(htmlParserCtxtPtr ctxt) {
1.14 daniel 1456: const xmlChar *q;
1457: xmlChar *ret = NULL;
1.1 daniel 1458:
1459: if (CUR == '"') {
1460: NEXT;
1461: q = CUR_PTR;
1462: while ((IS_CHAR(CUR)) && (CUR != '"'))
1463: NEXT;
1464: if (!IS_CHAR(CUR)) {
1465: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1466: ctxt->sax->error(ctxt->userData, "Unfinished SystemLiteral\n");
1467: ctxt->wellFormed = 0;
1468: } else {
1469: ret = xmlStrndup(q, CUR_PTR - q);
1470: NEXT;
1471: }
1472: } else if (CUR == '\'') {
1473: NEXT;
1474: q = CUR_PTR;
1475: while ((IS_CHAR(CUR)) && (CUR != '\''))
1476: NEXT;
1477: if (!IS_CHAR(CUR)) {
1478: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1479: ctxt->sax->error(ctxt->userData, "Unfinished SystemLiteral\n");
1480: ctxt->wellFormed = 0;
1481: } else {
1482: ret = xmlStrndup(q, CUR_PTR - q);
1483: NEXT;
1484: }
1485: } else {
1486: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1487: ctxt->sax->error(ctxt->userData, "SystemLiteral \" or ' expected\n");
1488: ctxt->wellFormed = 0;
1489: }
1490:
1491: return(ret);
1492: }
1493:
1494: /**
1495: * htmlParsePubidLiteral:
1496: * @ctxt: an HTML parser context
1497: *
1498: * parse an HTML public literal
1499: *
1500: * [12] PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'"
1501: *
1502: * Returns the PubidLiteral parsed or NULL.
1503: */
1504:
1.14 daniel 1505: xmlChar *
1.1 daniel 1506: htmlParsePubidLiteral(htmlParserCtxtPtr ctxt) {
1.14 daniel 1507: const xmlChar *q;
1508: xmlChar *ret = NULL;
1.1 daniel 1509: /*
1510: * Name ::= (Letter | '_') (NameChar)*
1511: */
1512: if (CUR == '"') {
1513: NEXT;
1514: q = CUR_PTR;
1515: while (IS_PUBIDCHAR(CUR)) NEXT;
1516: if (CUR != '"') {
1517: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1518: ctxt->sax->error(ctxt->userData, "Unfinished PubidLiteral\n");
1519: ctxt->wellFormed = 0;
1520: } else {
1521: ret = xmlStrndup(q, CUR_PTR - q);
1522: NEXT;
1523: }
1524: } else if (CUR == '\'') {
1525: NEXT;
1526: q = CUR_PTR;
1527: while ((IS_LETTER(CUR)) && (CUR != '\''))
1528: NEXT;
1529: if (!IS_LETTER(CUR)) {
1530: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1531: ctxt->sax->error(ctxt->userData, "Unfinished PubidLiteral\n");
1532: ctxt->wellFormed = 0;
1533: } else {
1534: ret = xmlStrndup(q, CUR_PTR - q);
1535: NEXT;
1536: }
1537: } else {
1538: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1539: ctxt->sax->error(ctxt->userData, "SystemLiteral \" or ' expected\n");
1540: ctxt->wellFormed = 0;
1541: }
1542:
1543: return(ret);
1544: }
1545:
1546: /**
1547: * htmlParseCharData:
1548: * @ctxt: an HTML parser context
1549: * @cdata: int indicating whether we are within a CDATA section
1550: *
1551: * parse a CharData section.
1552: * if we are within a CDATA section ']]>' marks an end of section.
1553: *
1554: * [14] CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*)
1555: */
1556:
1557: void
1558: htmlParseCharData(htmlParserCtxtPtr ctxt, int cdata) {
1.25 daniel 1559: xmlChar *buf = NULL;
1560: int len = 0;
1561: int size = 100;
1562: xmlChar q;
1563:
1564: buf = (xmlChar *) xmlMalloc(size * sizeof(xmlChar));
1565: if (buf == NULL) {
1566: fprintf(stderr, "malloc of %d byte failed\n", size);
1567: return;
1568: }
1.1 daniel 1569:
1.25 daniel 1570: q = CUR;
1571: while ((IS_CHAR(q)) && (q != '<') &&
1572: (q != '&')) {
1573: if ((q == ']') && (NXT(1) == ']') &&
1.1 daniel 1574: (NXT(2) == '>')) {
1575: if (cdata) break;
1576: else {
1577: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1578: ctxt->sax->error(ctxt->userData,
1579: "Sequence ']]>' not allowed in content\n");
1580: ctxt->wellFormed = 0;
1581: }
1582: }
1.25 daniel 1583: if (len + 1 >= size) {
1584: size *= 2;
1585: buf = xmlRealloc(buf, size * sizeof(xmlChar));
1586: if (buf == NULL) {
1587: fprintf(stderr, "realloc of %d byte failed\n", size);
1588: return;
1589: }
1590: }
1591: buf[len++] = q;
1.1 daniel 1592: NEXT;
1.25 daniel 1593: q = CUR;
1594: }
1595: if (len == 0) {
1596: xmlFree(buf);
1597: return;
1.1 daniel 1598: }
1599:
1600: /*
1.25 daniel 1601: * Ok the buffer is to be consumed as chars.
1.1 daniel 1602: */
1603: if (ctxt->sax != NULL) {
1.25 daniel 1604: if (areBlanks(ctxt, buf, len)) {
1.1 daniel 1605: if (ctxt->sax->ignorableWhitespace != NULL)
1.25 daniel 1606: ctxt->sax->ignorableWhitespace(ctxt->userData, buf, len);
1.1 daniel 1607: } else {
1608: if (ctxt->sax->characters != NULL)
1.25 daniel 1609: ctxt->sax->characters(ctxt->userData, buf, len);
1.1 daniel 1610: }
1611: }
1.25 daniel 1612: xmlFree(buf);
1.1 daniel 1613: }
1614:
1615: /**
1616: * htmlParseExternalID:
1617: * @ctxt: an HTML parser context
1.14 daniel 1618: * @publicID: a xmlChar** receiving PubidLiteral
1.1 daniel 1619: * @strict: indicate whether we should restrict parsing to only
1620: * production [75], see NOTE below
1621: *
1622: * Parse an External ID or a Public ID
1623: *
1624: * NOTE: Productions [75] and [83] interract badly since [75] can generate
1625: * 'PUBLIC' S PubidLiteral S SystemLiteral
1626: *
1627: * [75] ExternalID ::= 'SYSTEM' S SystemLiteral
1628: * | 'PUBLIC' S PubidLiteral S SystemLiteral
1629: *
1630: * [83] PublicID ::= 'PUBLIC' S PubidLiteral
1631: *
1632: * Returns the function returns SystemLiteral and in the second
1633: * case publicID receives PubidLiteral, is strict is off
1634: * it is possible to return NULL and have publicID set.
1635: */
1636:
1.14 daniel 1637: xmlChar *
1638: htmlParseExternalID(htmlParserCtxtPtr ctxt, xmlChar **publicID, int strict) {
1639: xmlChar *URI = NULL;
1.1 daniel 1640:
1641: if ((UPPER == 'S') && (UPP(1) == 'Y') &&
1642: (UPP(2) == 'S') && (UPP(3) == 'T') &&
1643: (UPP(4) == 'E') && (UPP(5) == 'M')) {
1644: SKIP(6);
1645: if (!IS_BLANK(CUR)) {
1646: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1647: ctxt->sax->error(ctxt->userData,
1648: "Space required after 'SYSTEM'\n");
1649: ctxt->wellFormed = 0;
1650: }
1651: SKIP_BLANKS;
1652: URI = htmlParseSystemLiteral(ctxt);
1653: if (URI == NULL) {
1654: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1655: ctxt->sax->error(ctxt->userData,
1656: "htmlParseExternalID: SYSTEM, no URI\n");
1657: ctxt->wellFormed = 0;
1658: }
1659: } else if ((UPPER == 'P') && (UPP(1) == 'U') &&
1660: (UPP(2) == 'B') && (UPP(3) == 'L') &&
1661: (UPP(4) == 'I') && (UPP(5) == 'C')) {
1662: SKIP(6);
1663: if (!IS_BLANK(CUR)) {
1664: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1665: ctxt->sax->error(ctxt->userData,
1666: "Space required after 'PUBLIC'\n");
1667: ctxt->wellFormed = 0;
1668: }
1669: SKIP_BLANKS;
1670: *publicID = htmlParsePubidLiteral(ctxt);
1671: if (*publicID == NULL) {
1672: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1673: ctxt->sax->error(ctxt->userData,
1674: "htmlParseExternalID: PUBLIC, no Public Identifier\n");
1675: ctxt->wellFormed = 0;
1676: }
1.5 daniel 1677: SKIP_BLANKS;
1678: if ((CUR == '"') || (CUR == '\'')) {
1679: URI = htmlParseSystemLiteral(ctxt);
1.1 daniel 1680: }
1681: }
1682: return(URI);
1683: }
1684:
1685: /**
1686: * htmlParseComment:
1687: * @ctxt: an HTML parser context
1688: * @create: should we create a node, or just skip the content
1689: *
1690: * Parse an XML (SGML) comment <!-- .... -->
1691: *
1692: * [15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
1693: */
1694: void
1695: htmlParseComment(htmlParserCtxtPtr ctxt, int create) {
1.25 daniel 1696: xmlChar *buf = NULL;
1697: int len = 0;
1698: int size = 100;
1699: register xmlChar s, r, q;
1.1 daniel 1700:
1701: /*
1702: * Check that there is a comment right here.
1703: */
1704: if ((CUR != '<') || (NXT(1) != '!') ||
1705: (NXT(2) != '-') || (NXT(3) != '-')) return;
1706:
1.25 daniel 1707: buf = (xmlChar *) xmlMalloc(size * sizeof(xmlChar));
1708: if (buf == NULL) {
1709: fprintf(stderr, "malloc of %d byte failed\n", size);
1710: return;
1711: }
1712: q = r = '-'; /* 0 or '-' to cover our ass against <!--> and <!---> ? !!! */
1.1 daniel 1713: SKIP(4);
1.25 daniel 1714: s = CUR;
1715:
1716: while (IS_CHAR(s) &&
1717: ((s != '>') || (r != '-') || (q != '-'))) {
1718: if (len + 1 >= size) {
1719: size *= 2;
1720: buf = xmlRealloc(buf, size * sizeof(xmlChar));
1721: if (buf == NULL) {
1722: fprintf(stderr, "realloc of %d byte failed\n", size);
1723: return;
1724: }
1725: }
1726: buf[len++] = s;
1727: NEXT;
1728: q = r;
1729: r = s;
1730: s = CUR;
1.1 daniel 1731: }
1.25 daniel 1732: buf[len - 2] = 0;
1733: if (!IS_CHAR(s)) {
1.1 daniel 1734: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1.25 daniel 1735: ctxt->sax->error(ctxt->userData, "Comment not terminated \n<!--%.50s\n", buf);
1.1 daniel 1736: ctxt->wellFormed = 0;
1737: } else {
1738: NEXT;
1739: if (create) {
1.24 daniel 1740: if ((ctxt->sax != NULL) && (ctxt->sax->comment != NULL)) {
1.25 daniel 1741: ctxt->sax->comment(ctxt->userData, buf);
1.24 daniel 1742: }
1.1 daniel 1743: }
1744: }
1.25 daniel 1745: xmlFree(buf);
1.1 daniel 1746: }
1747:
1748: /**
1749: * htmlParseCharRef:
1750: * @ctxt: an HTML parser context
1751: *
1752: * parse Reference declarations
1753: *
1754: * [66] CharRef ::= '&#' [0-9]+ ';' |
1755: * '&#x' [0-9a-fA-F]+ ';'
1756: *
1757: * Returns the value parsed (as an int)
1758: */
1759: int
1760: htmlParseCharRef(htmlParserCtxtPtr ctxt) {
1761: int val = 0;
1762:
1763: if ((CUR == '&') && (NXT(1) == '#') &&
1764: (NXT(2) == 'x')) {
1765: SKIP(3);
1766: while (CUR != ';') {
1767: if ((CUR >= '0') && (CUR <= '9'))
1768: val = val * 16 + (CUR - '0');
1769: else if ((CUR >= 'a') && (CUR <= 'f'))
1770: val = val * 16 + (CUR - 'a') + 10;
1771: else if ((CUR >= 'A') && (CUR <= 'F'))
1772: val = val * 16 + (CUR - 'A') + 10;
1773: else {
1774: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1775: ctxt->sax->error(ctxt->userData,
1776: "htmlParseCharRef: invalid hexadecimal value\n");
1777: ctxt->wellFormed = 0;
1778: val = 0;
1779: break;
1780: }
1781: NEXT;
1782: }
1783: if (CUR == ';')
1784: NEXT;
1785: } else if ((CUR == '&') && (NXT(1) == '#')) {
1786: SKIP(2);
1787: while (CUR != ';') {
1788: if ((CUR >= '0') && (CUR <= '9'))
1789: val = val * 10 + (CUR - '0');
1790: else {
1791: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1792: ctxt->sax->error(ctxt->userData,
1793: "htmlParseCharRef: invalid decimal value\n");
1794: ctxt->wellFormed = 0;
1795: val = 0;
1796: break;
1797: }
1798: NEXT;
1799: }
1800: if (CUR == ';')
1801: NEXT;
1802: } else {
1803: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1804: ctxt->sax->error(ctxt->userData, "htmlParseCharRef: invalid value\n");
1805: ctxt->wellFormed = 0;
1806: }
1807: /*
1808: * Check the value IS_CHAR ...
1809: */
1810: if (IS_CHAR(val)) {
1811: return(val);
1812: } else {
1813: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1.14 daniel 1814: ctxt->sax->error(ctxt->userData, "htmlParseCharRef: invalid xmlChar value %d\n",
1.1 daniel 1815: val);
1816: ctxt->wellFormed = 0;
1817: }
1818: return(0);
1819: }
1820:
1821:
1822: /**
1823: * htmlParseDocTypeDecl :
1824: * @ctxt: an HTML parser context
1825: *
1826: * parse a DOCTYPE declaration
1827: *
1828: * [28] doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S?
1829: * ('[' (markupdecl | PEReference | S)* ']' S?)? '>'
1830: */
1831:
1832: void
1833: htmlParseDocTypeDecl(htmlParserCtxtPtr ctxt) {
1.14 daniel 1834: xmlChar *name;
1835: xmlChar *ExternalID = NULL;
1836: xmlChar *URI = NULL;
1.1 daniel 1837:
1838: /*
1839: * We know that '<!DOCTYPE' has been detected.
1840: */
1841: SKIP(9);
1842:
1843: SKIP_BLANKS;
1844:
1845: /*
1846: * Parse the DOCTYPE name.
1847: */
1848: name = htmlParseName(ctxt);
1849: if (name == NULL) {
1850: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1851: ctxt->sax->error(ctxt->userData, "htmlParseDocTypeDecl : no DOCTYPE name !\n");
1852: ctxt->wellFormed = 0;
1853: }
1854: /*
1855: * Check that upper(name) == "HTML" !!!!!!!!!!!!!
1856: */
1857:
1858: SKIP_BLANKS;
1859:
1860: /*
1861: * Check for SystemID and ExternalID
1862: */
1.5 daniel 1863: URI = htmlParseExternalID(ctxt, &ExternalID, 0);
1.1 daniel 1864: SKIP_BLANKS;
1865:
1866: /*
1867: * We should be at the end of the DOCTYPE declaration.
1868: */
1869: if (CUR != '>') {
1870: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1871: ctxt->sax->error(ctxt->userData, "DOCTYPE unproperly terminated\n");
1872: ctxt->wellFormed = 0;
1873: /* We shouldn't try to resynchronize ... */
1874: } else {
1875: }
1876: NEXT;
1877:
1878: /*
1879: * Create the document accordingly to the DOCTYPE
1880: */
1881: ctxt->myDoc = htmlNewDoc(URI, ExternalID);
1882:
1883: /*
1884: * Cleanup, since we don't use all those identifiers
1885: */
1.11 daniel 1886: if (URI != NULL) xmlFree(URI);
1887: if (ExternalID != NULL) xmlFree(ExternalID);
1888: if (name != NULL) xmlFree(name);
1.1 daniel 1889: }
1890:
1891: /**
1892: * htmlParseAttribute:
1893: * @ctxt: an HTML parser context
1.14 daniel 1894: * @value: a xmlChar ** used to store the value of the attribute
1.1 daniel 1895: *
1896: * parse an attribute
1897: *
1898: * [41] Attribute ::= Name Eq AttValue
1899: *
1900: * [25] Eq ::= S? '=' S?
1901: *
1902: * With namespace:
1903: *
1904: * [NS 11] Attribute ::= QName Eq AttValue
1905: *
1906: * Also the case QName == xmlns:??? is handled independently as a namespace
1907: * definition.
1908: *
1909: * Returns the attribute name, and the value in *value.
1910: */
1911:
1.14 daniel 1912: xmlChar *
1913: htmlParseAttribute(htmlParserCtxtPtr ctxt, xmlChar **value) {
1914: xmlChar *name, *val;
1.1 daniel 1915:
1916: *value = NULL;
1917: name = htmlParseName(ctxt);
1918: if (name == NULL) {
1919: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1920: ctxt->sax->error(ctxt->userData, "error parsing attribute name\n");
1921: ctxt->wellFormed = 0;
1922: return(NULL);
1923: }
1924:
1925: /*
1926: * read the value
1927: */
1928: SKIP_BLANKS;
1929: if (CUR == '=') {
1930: NEXT;
1931: SKIP_BLANKS;
1932: val = htmlParseAttValue(ctxt);
1933: } else {
1.27 ! daniel 1934: /* TODO : some attribute must have values, some may not */
1.1 daniel 1935: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1936: ctxt->sax->error(ctxt->userData,
1937: "Specification mandate value for attribute %s\n", name);
1938: ctxt->wellFormed = 0;
1939: return(NULL);
1940: }
1941:
1942: *value = val;
1943: return(name);
1944: }
1945:
1946: /**
1947: * htmlParseStartTag:
1948: * @ctxt: an HTML parser context
1949: *
1950: * parse a start of tag either for rule element or
1951: * EmptyElement. In both case we don't parse the tag closing chars.
1952: *
1953: * [40] STag ::= '<' Name (S Attribute)* S? '>'
1954: *
1955: * [44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>'
1956: *
1957: * With namespace:
1958: *
1959: * [NS 8] STag ::= '<' QName (S Attribute)* S? '>'
1960: *
1961: * [NS 10] EmptyElement ::= '<' QName (S Attribute)* S? '/>'
1962: *
1963: */
1964:
1.18 daniel 1965: void
1.1 daniel 1966: htmlParseStartTag(htmlParserCtxtPtr ctxt) {
1.14 daniel 1967: xmlChar *name;
1968: xmlChar *attname;
1969: xmlChar *attvalue;
1970: const xmlChar **atts = NULL;
1.1 daniel 1971: int nbatts = 0;
1972: int maxatts = 0;
1973: int i;
1974:
1.18 daniel 1975: if (CUR != '<') return;
1.1 daniel 1976: NEXT;
1977:
1.19 daniel 1978: GROW;
1.1 daniel 1979: name = htmlParseHTMLName(ctxt);
1980: if (name == NULL) {
1981: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1982: ctxt->sax->error(ctxt->userData,
1983: "htmlParseStartTag: invalid element name\n");
1984: ctxt->wellFormed = 0;
1.18 daniel 1985: return;
1.1 daniel 1986: }
1987:
1988: /*
1989: * Check for auto-closure of HTML elements.
1990: */
1991: htmlAutoClose(ctxt, name);
1992:
1993: /*
1994: * Now parse the attributes, it ends up with the ending
1995: *
1996: * (S Attribute)* S?
1997: */
1998: SKIP_BLANKS;
1999: while ((IS_CHAR(CUR)) &&
2000: (CUR != '>') &&
2001: ((CUR != '/') || (NXT(1) != '>'))) {
1.26 daniel 2002: long cons = ctxt->nbChars;
1.1 daniel 2003:
1.19 daniel 2004: GROW;
1.1 daniel 2005: attname = htmlParseAttribute(ctxt, &attvalue);
2006: if ((attname != NULL) && (attvalue != NULL)) {
2007: /*
2008: * Well formedness requires at most one declaration of an attribute
2009: */
2010: for (i = 0; i < nbatts;i += 2) {
2011: if (!xmlStrcmp(atts[i], attname)) {
2012: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1.19 daniel 2013: ctxt->sax->error(ctxt->userData,
2014: "Attribute %s redefined\n",
2015: attname);
1.1 daniel 2016: ctxt->wellFormed = 0;
1.11 daniel 2017: xmlFree(attname);
2018: xmlFree(attvalue);
1.19 daniel 2019: goto failed;
1.1 daniel 2020: }
2021: }
2022:
2023: /*
2024: * Add the pair to atts
2025: */
2026: if (atts == NULL) {
2027: maxatts = 10;
1.14 daniel 2028: atts = (const xmlChar **) xmlMalloc(maxatts * sizeof(xmlChar *));
1.1 daniel 2029: if (atts == NULL) {
2030: fprintf(stderr, "malloc of %ld byte failed\n",
1.14 daniel 2031: maxatts * (long)sizeof(xmlChar *));
1.18 daniel 2032: if (name != NULL) xmlFree(name);
2033: return;
1.1 daniel 2034: }
1.23 daniel 2035: } else if (nbatts + 4 > maxatts) {
1.1 daniel 2036: maxatts *= 2;
1.14 daniel 2037: atts = (const xmlChar **) xmlRealloc(atts, maxatts * sizeof(xmlChar *));
1.1 daniel 2038: if (atts == NULL) {
2039: fprintf(stderr, "realloc of %ld byte failed\n",
1.14 daniel 2040: maxatts * (long)sizeof(xmlChar *));
1.18 daniel 2041: if (name != NULL) xmlFree(name);
2042: return;
1.1 daniel 2043: }
2044: }
2045: atts[nbatts++] = attname;
2046: atts[nbatts++] = attvalue;
2047: atts[nbatts] = NULL;
2048: atts[nbatts + 1] = NULL;
2049: }
2050:
1.19 daniel 2051: failed:
1.1 daniel 2052: SKIP_BLANKS;
1.26 daniel 2053: if (cons == ctxt->nbChars) {
1.1 daniel 2054: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2055: ctxt->sax->error(ctxt->userData,
2056: "htmlParseStartTag: problem parsing attributes\n");
2057: ctxt->wellFormed = 0;
2058: break;
2059: }
2060: }
2061:
2062: /*
2063: * SAX: Start of Element !
2064: */
1.15 daniel 2065: htmlnamePush(ctxt, xmlStrdup(name));
1.18 daniel 2066: #ifdef DEBUG
2067: fprintf(stderr,"Start of element %s: pushed %s\n", name, ctxt->name);
2068: #endif
1.1 daniel 2069: if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
2070: ctxt->sax->startElement(ctxt->userData, name, atts);
2071:
2072: if (atts != NULL) {
1.14 daniel 2073: for (i = 0;i < nbatts;i++) xmlFree((xmlChar *) atts[i]);
1.11 daniel 2074: xmlFree(atts);
1.1 daniel 2075: }
1.18 daniel 2076: if (name != NULL) xmlFree(name);
1.1 daniel 2077: }
2078:
2079: /**
2080: * htmlParseEndTag:
2081: * @ctxt: an HTML parser context
2082: *
2083: * parse an end of tag
2084: *
2085: * [42] ETag ::= '</' Name S? '>'
2086: *
2087: * With namespace
2088: *
2089: * [NS 9] ETag ::= '</' QName S? '>'
2090: */
2091:
2092: void
1.18 daniel 2093: htmlParseEndTag(htmlParserCtxtPtr ctxt) {
1.14 daniel 2094: xmlChar *name;
1.15 daniel 2095: xmlChar *oldname;
1.1 daniel 2096: int i;
2097:
2098: if ((CUR != '<') || (NXT(1) != '/')) {
2099: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2100: ctxt->sax->error(ctxt->userData, "htmlParseEndTag: '</' not found\n");
2101: ctxt->wellFormed = 0;
2102: return;
2103: }
2104: SKIP(2);
2105:
2106: name = htmlParseHTMLName(ctxt);
1.24 daniel 2107: if (name == NULL) return;
1.1 daniel 2108:
2109: /*
2110: * We should definitely be at the ending "S? '>'" part
2111: */
2112: SKIP_BLANKS;
2113: if ((!IS_CHAR(CUR)) || (CUR != '>')) {
2114: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2115: ctxt->sax->error(ctxt->userData, "End tag : expected '>'\n");
2116: ctxt->wellFormed = 0;
2117: } else
2118: NEXT;
2119:
2120: /*
1.18 daniel 2121: * If the name read is not one of the element in the parsing stack
2122: * then return, it's just an error.
1.1 daniel 2123: */
1.18 daniel 2124: for (i = (ctxt->nameNr - 1);i >= 0;i--) {
2125: if (!xmlStrcmp(name, ctxt->nameTab[i])) break;
1.1 daniel 2126: }
2127: if (i < 0) {
2128: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
1.18 daniel 2129: ctxt->sax->error(ctxt->userData,
2130: "Unexpected end tag : %s\n", name);
1.11 daniel 2131: xmlFree(name);
1.1 daniel 2132: ctxt->wellFormed = 0;
2133: return;
2134: }
2135:
1.18 daniel 2136:
1.1 daniel 2137: /*
2138: * Check for auto-closure of HTML elements.
2139: */
1.18 daniel 2140:
1.1 daniel 2141: htmlAutoCloseOnClose(ctxt, name);
2142:
2143: /*
2144: * Well formedness constraints, opening and closing must match.
2145: * With the exception that the autoclose may have popped stuff out
2146: * of the stack.
2147: */
1.18 daniel 2148: if (xmlStrcmp(name, ctxt->name)) {
2149: #ifdef DEBUG
2150: fprintf(stderr,"End of tag %s: expecting %s\n", name, ctxt->name);
2151: #endif
1.15 daniel 2152: if ((ctxt->name != NULL) &&
2153: (xmlStrcmp(ctxt->name, name))) {
1.1 daniel 2154: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2155: ctxt->sax->error(ctxt->userData,
2156: "Opening and ending tag mismatch: %s and %s\n",
1.15 daniel 2157: name, ctxt->name);
1.1 daniel 2158: ctxt->wellFormed = 0;
2159: }
2160: }
2161:
2162: /*
2163: * SAX: End of Tag
2164: */
1.15 daniel 2165: oldname = ctxt->name;
1.24 daniel 2166: if ((oldname != NULL) && (!xmlStrcmp(oldname, name))) {
1.18 daniel 2167: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
2168: ctxt->sax->endElement(ctxt->userData, name);
1.24 daniel 2169: oldname = htmlnamePop(ctxt);
1.18 daniel 2170: if (oldname != NULL) {
2171: #ifdef DEBUG
2172: fprintf(stderr,"End of tag %s: popping out %s\n", name, oldname);
2173: #endif
2174: xmlFree(oldname);
2175: #ifdef DEBUG
2176: } else {
2177: fprintf(stderr,"End of tag %s: stack empty !!!\n", name);
2178: #endif
2179: }
2180: }
1.1 daniel 2181:
2182: if (name != NULL)
1.11 daniel 2183: xmlFree(name);
1.1 daniel 2184:
2185: return;
2186: }
2187:
2188:
2189: /**
2190: * htmlParseReference:
2191: * @ctxt: an HTML parser context
2192: *
2193: * parse and handle entity references in content,
2194: * this will end-up in a call to character() since this is either a
2195: * CharRef, or a predefined entity.
2196: */
2197: void
2198: htmlParseReference(htmlParserCtxtPtr ctxt) {
2199: htmlEntityDescPtr ent;
1.14 daniel 2200: xmlChar out[2];
2201: xmlChar *name;
1.1 daniel 2202: int val;
2203: if (CUR != '&') return;
2204:
2205: if (NXT(1) == '#') {
2206: val = htmlParseCharRef(ctxt);
1.8 daniel 2207: /* invalid for UTF-8 variable encoding !!!!! */
1.1 daniel 2208: out[0] = val;
2209: out[1] = 0;
2210: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
2211: ctxt->sax->characters(ctxt->userData, out, 1);
2212: } else {
2213: ent = htmlParseEntityRef(ctxt, &name);
2214: if (name == NULL) return; /* Shall we output & anyway ? */
2215: if ((ent == NULL) || (ent->value <= 0) || (ent->value >= 255)) {
2216: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL)) {
1.8 daniel 2217: ctxt->sax->characters(ctxt->userData, BAD_CAST "&", 1);
1.1 daniel 2218: ctxt->sax->characters(ctxt->userData, name, xmlStrlen(name));
1.8 daniel 2219: ctxt->sax->characters(ctxt->userData, BAD_CAST ";", 1);
1.1 daniel 2220: }
2221: } else {
1.8 daniel 2222: /* invalid for UTF-8 variable encoding !!!!! */
1.1 daniel 2223: out[0] = ent->value;
2224: out[1] = 0;
2225: if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
2226: ctxt->sax->characters(ctxt->userData, out, 1);
2227: }
1.11 daniel 2228: xmlFree(name);
1.1 daniel 2229: }
2230: }
2231:
2232: /**
2233: * htmlParseContent:
2234: * @ctxt: an HTML parser context
2235: * @name: the node name
2236: *
2237: * Parse a content: comment, sub-element, reference or text.
2238: *
2239: */
2240:
2241: void
1.18 daniel 2242: htmlParseContent(htmlParserCtxtPtr ctxt) {
1.15 daniel 2243: xmlChar *currentNode;
1.18 daniel 2244: int depth;
1.1 daniel 2245:
1.26 daniel 2246: currentNode = xmlStrdup(ctxt->name);
1.18 daniel 2247: depth = ctxt->nameNr;
2248: while (1) {
1.26 daniel 2249: long cons = ctxt->nbChars;
1.1 daniel 2250:
1.18 daniel 2251: GROW;
2252: /*
2253: * Our tag or one of it's parent or children is ending.
2254: */
2255: if ((CUR == '<') && (NXT(1) == '/')) {
2256: htmlParseEndTag(ctxt);
1.26 daniel 2257: if (currentNode != NULL) xmlFree(currentNode);
1.18 daniel 2258: return;
2259: }
2260:
2261: /*
2262: * Has this node been popped out during parsing of
2263: * the next element
2264: */
1.26 daniel 2265: if ((xmlStrcmp(currentNode, ctxt->name)) &&
2266: (depth >= ctxt->nameNr)) {
2267: if (currentNode != NULL) xmlFree(currentNode);
2268: return;
2269: }
1.18 daniel 2270:
1.1 daniel 2271: /*
2272: * First case : a comment
2273: */
2274: if ((CUR == '<') && (NXT(1) == '!') &&
2275: (NXT(2) == '-') && (NXT(3) == '-')) {
2276: htmlParseComment(ctxt, 1);
2277: }
2278:
2279: /*
2280: * Second case : a sub-element.
2281: */
2282: else if (CUR == '<') {
2283: htmlParseElement(ctxt);
2284: }
2285:
2286: /*
2287: * Third case : a reference. If if has not been resolved,
2288: * parsing returns it's Name, create the node
2289: */
2290: else if (CUR == '&') {
2291: htmlParseReference(ctxt);
2292: }
2293:
2294: /*
2295: * Last case, text. Note that References are handled directly.
2296: */
2297: else {
2298: htmlParseCharData(ctxt, 0);
2299: }
2300:
1.26 daniel 2301: if (cons == ctxt->nbChars) {
1.22 daniel 2302: if (ctxt->node != NULL) {
2303: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2304: ctxt->sax->error(ctxt->userData,
2305: "detected an error in element content\n");
2306: ctxt->wellFormed = 0;
2307: }
1.1 daniel 2308: break;
2309: }
1.17 daniel 2310:
1.5 daniel 2311: GROW;
1.1 daniel 2312: }
1.26 daniel 2313: if (currentNode != NULL) xmlFree(currentNode);
1.1 daniel 2314: }
2315:
2316: /**
2317: * htmlParseElement:
2318: * @ctxt: an HTML parser context
2319: *
2320: * parse an HTML element, this is highly recursive
2321: *
2322: * [39] element ::= EmptyElemTag | STag content ETag
2323: *
2324: * [41] Attribute ::= Name Eq AttValue
2325: */
2326:
2327: void
2328: htmlParseElement(htmlParserCtxtPtr ctxt) {
1.14 daniel 2329: const xmlChar *openTag = CUR_PTR;
1.18 daniel 2330: xmlChar *oldname;
1.14 daniel 2331: xmlChar *name;
1.16 daniel 2332: xmlChar *currentNode = NULL;
1.1 daniel 2333: htmlElemDescPtr info;
1.10 daniel 2334: htmlParserNodeInfo node_info;
1.18 daniel 2335: int depth = ctxt->nameNr;
1.1 daniel 2336:
2337: /* Capture start position */
1.10 daniel 2338: if (ctxt->record_info) {
2339: node_info.begin_pos = ctxt->input->consumed +
2340: (CUR_PTR - ctxt->input->base);
2341: node_info.begin_line = ctxt->input->line;
2342: }
1.1 daniel 2343:
1.26 daniel 2344: oldname = xmlStrdup(ctxt->name);
1.18 daniel 2345: htmlParseStartTag(ctxt);
2346: name = ctxt->name;
1.19 daniel 2347: #ifdef DEBUG
2348: if (oldname == NULL)
2349: fprintf(stderr, "Start of element %s\n", name);
2350: else if (name == NULL)
2351: fprintf(stderr, "Start of element failed, was %s\n", oldname);
2352: else
2353: fprintf(stderr, "Start of element %s, was %s\n", name, oldname);
2354: #endif
1.26 daniel 2355: if (((depth == ctxt->nameNr) && (!xmlStrcmp(oldname, ctxt->name))) ||
1.18 daniel 2356: (name == NULL)) {
1.19 daniel 2357: if (CUR == '>')
2358: NEXT;
1.26 daniel 2359: if (oldname != NULL)
2360: xmlFree(oldname);
1.1 daniel 2361: return;
2362: }
1.26 daniel 2363: if (oldname != NULL)
2364: xmlFree(oldname);
1.1 daniel 2365:
2366: /*
2367: * Lookup the info for that element.
2368: */
2369: info = htmlTagLookup(name);
2370: if (info == NULL) {
2371: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2372: ctxt->sax->error(ctxt->userData, "Tag %s invalid\n",
2373: name);
2374: ctxt->wellFormed = 0;
2375: } else if (info->depr) {
2376: /***************************
2377: if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL))
2378: ctxt->sax->warning(ctxt->userData, "Tag %s is deprecated\n",
2379: name);
2380: ***************************/
2381: }
2382:
2383: /*
2384: * Check for an Empty Element labelled the XML/SGML way
2385: */
2386: if ((CUR == '/') && (NXT(1) == '>')) {
2387: SKIP(2);
2388: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
2389: ctxt->sax->endElement(ctxt->userData, name);
1.24 daniel 2390: oldname = htmlnamePop(ctxt);
1.18 daniel 2391: #ifdef DEBUG
2392: fprintf(stderr,"End of tag the XML way: popping out %s\n", oldname);
2393: #endif
1.17 daniel 2394: if (oldname != NULL)
2395: xmlFree(oldname);
1.1 daniel 2396: return;
2397: }
2398:
1.5 daniel 2399: if (CUR == '>') {
2400: NEXT;
2401: } else {
1.1 daniel 2402: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2403: ctxt->sax->error(ctxt->userData, "Couldn't find end of Start Tag\n%.30s\n",
2404: openTag);
2405: ctxt->wellFormed = 0;
2406:
2407: /*
2408: * end of parsing of this node.
2409: */
1.18 daniel 2410: if (!xmlStrcmp(name, ctxt->name)) {
2411: nodePop(ctxt);
1.24 daniel 2412: oldname = htmlnamePop(ctxt);
1.18 daniel 2413: #ifdef DEBUG
2414: fprintf(stderr,"End of start tag problem: popping out %s\n", oldname);
2415: #endif
2416: if (oldname != NULL)
2417: xmlFree(oldname);
2418: }
1.10 daniel 2419:
2420: /*
2421: * Capture end position and add node
2422: */
2423: if ( currentNode != NULL && ctxt->record_info ) {
2424: node_info.end_pos = ctxt->input->consumed +
2425: (CUR_PTR - ctxt->input->base);
2426: node_info.end_line = ctxt->input->line;
1.15 daniel 2427: node_info.node = ctxt->node;
1.10 daniel 2428: xmlParserAddNodeInfo(ctxt, &node_info);
2429: }
1.1 daniel 2430: return;
2431: }
2432:
2433: /*
2434: * Check for an Empty Element from DTD definition
2435: */
2436: if ((info != NULL) && (info->empty)) {
2437: if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
2438: ctxt->sax->endElement(ctxt->userData, name);
1.24 daniel 2439: oldname = htmlnamePop(ctxt);
1.18 daniel 2440: #ifdef DEBUG
2441: fprintf(stderr,"End of empty tag %s : popping out %s\n", name, oldname);
2442: #endif
1.17 daniel 2443: if (oldname != NULL)
2444: xmlFree(oldname);
1.1 daniel 2445: return;
2446: }
2447:
2448: /*
2449: * Parse the content of the element:
2450: */
1.26 daniel 2451: currentNode = xmlStrdup(ctxt->name);
1.18 daniel 2452: depth = ctxt->nameNr;
2453: while (IS_CHAR(CUR)) {
2454: htmlParseContent(ctxt);
2455: if (ctxt->nameNr < depth) break;
2456: }
1.1 daniel 2457:
2458: if (!IS_CHAR(CUR)) {
2459: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2460: ctxt->sax->error(ctxt->userData,
1.18 daniel 2461: "Premature end of data in tag %s\n", currentNode);
1.1 daniel 2462: ctxt->wellFormed = 0;
2463:
2464: /*
2465: * end of parsing of this node.
2466: */
2467: nodePop(ctxt);
1.24 daniel 2468: oldname = htmlnamePop(ctxt);
1.18 daniel 2469: #ifdef DEBUG
2470: fprintf(stderr,"Premature end of tag %s : popping out %s\n", name, oldname);
2471: #endif
1.17 daniel 2472: if (oldname != NULL)
2473: xmlFree(oldname);
1.26 daniel 2474: if (currentNode != NULL)
2475: xmlFree(currentNode);
1.1 daniel 2476: return;
2477: }
1.10 daniel 2478:
2479: /*
2480: * Capture end position and add node
2481: */
2482: if ( currentNode != NULL && ctxt->record_info ) {
2483: node_info.end_pos = ctxt->input->consumed +
2484: (CUR_PTR - ctxt->input->base);
2485: node_info.end_line = ctxt->input->line;
1.15 daniel 2486: node_info.node = ctxt->node;
1.10 daniel 2487: xmlParserAddNodeInfo(ctxt, &node_info);
2488: }
1.26 daniel 2489: if (currentNode != NULL)
2490: xmlFree(currentNode);
1.1 daniel 2491: }
2492:
2493: /**
2494: * htmlParseDocument :
2495: * @ctxt: an HTML parser context
2496: *
2497: * parse an HTML document (and build a tree if using the standard SAX
2498: * interface).
2499: *
2500: * Returns 0, -1 in case of error. the parser context is augmented
2501: * as a result of the parsing.
2502: */
2503:
2504: int
2505: htmlParseDocument(htmlParserCtxtPtr ctxt) {
2506: htmlDefaultSAXHandlerInit();
2507: ctxt->html = 1;
2508:
1.5 daniel 2509: GROW;
1.1 daniel 2510: /*
1.9 daniel 2511: * SAX: beginning of the document processing.
1.1 daniel 2512: */
2513: if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
2514: ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator);
2515:
2516: /*
2517: * Wipe out everything which is before the first '<'
2518: */
1.22 daniel 2519: SKIP_BLANKS;
1.1 daniel 2520: if (CUR == 0) {
2521: if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
2522: ctxt->sax->error(ctxt->userData, "Document is empty\n");
2523: ctxt->wellFormed = 0;
2524: }
2525:
1.22 daniel 2526: /*
2527: * Parse possible comments before any content
2528: */
2529: while ((CUR == '<') && (NXT(1) == '!') &&
2530: (NXT(2) == '-') && (NXT(3) == '-')) {
2531: ctxt->myDoc = htmlNewDoc(NULL, NULL);
2532: htmlParseComment(ctxt, 1);
2533: SKIP_BLANKS;
2534: }
2535:
1.1 daniel 2536:
2537: /*
2538: * Then possibly doc type declaration(s) and more Misc
2539: * (doctypedecl Misc*)?
2540: */
2541: if ((CUR == '<') && (NXT(1) == '!') &&
2542: (UPP(2) == 'D') && (UPP(3) == 'O') &&
2543: (UPP(4) == 'C') && (UPP(5) == 'T') &&
2544: (UPP(6) == 'Y') && (UPP(7) == 'P') &&
2545: (UPP(8) == 'E')) {
2546: htmlParseDocTypeDecl(ctxt);
2547: }
2548: SKIP_BLANKS;
2549:
2550: /*
2551: * Create the document if not done already.
2552: */
2553: if (ctxt->myDoc == NULL) {
2554: ctxt->myDoc = htmlNewDoc(NULL, NULL);
2555: }
2556:
2557: /*
2558: * Time to start parsing the tree itself
2559: */
1.22 daniel 2560: htmlParseContent(ctxt);
1.1 daniel 2561:
2562: /*
2563: * SAX: end of the document processing.
2564: */
2565: if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
2566: ctxt->sax->endDocument(ctxt->userData);
2567: if (! ctxt->wellFormed) return(-1);
2568: return(0);
2569: }
2570:
2571:
2572: /********************************************************************************
2573: * *
2574: * Parser contexts handling *
2575: * *
2576: ********************************************************************************/
2577:
2578: /**
2579: * xmlInitParserCtxt:
2580: * @ctxt: an HTML parser context
2581: *
2582: * Initialize a parser context
2583: */
2584:
2585: void
2586: htmlInitParserCtxt(htmlParserCtxtPtr ctxt)
2587: {
2588: htmlSAXHandler *sax;
2589:
1.21 daniel 2590: if (ctxt == NULL) return;
2591: memset(ctxt, 0, sizeof(htmlParserCtxt));
2592:
1.11 daniel 2593: sax = (htmlSAXHandler *) xmlMalloc(sizeof(htmlSAXHandler));
1.1 daniel 2594: if (sax == NULL) {
2595: fprintf(stderr, "htmlInitParserCtxt: out of memory\n");
2596: }
1.19 daniel 2597: memset(sax, 0, sizeof(htmlSAXHandler));
1.1 daniel 2598:
2599: /* Allocate the Input stack */
1.19 daniel 2600: ctxt->inputTab = (htmlParserInputPtr *)
2601: xmlMalloc(5 * sizeof(htmlParserInputPtr));
2602: if (ctxt->inputTab == NULL) {
2603: fprintf(stderr, "htmlInitParserCtxt: out of memory\n");
2604: }
1.1 daniel 2605: ctxt->inputNr = 0;
2606: ctxt->inputMax = 5;
2607: ctxt->input = NULL;
2608: ctxt->version = NULL;
2609: ctxt->encoding = NULL;
2610: ctxt->standalone = -1;
2611:
2612: /* Allocate the Node stack */
1.11 daniel 2613: ctxt->nodeTab = (htmlNodePtr *) xmlMalloc(10 * sizeof(htmlNodePtr));
1.1 daniel 2614: ctxt->nodeNr = 0;
2615: ctxt->nodeMax = 10;
2616: ctxt->node = NULL;
2617:
1.15 daniel 2618: /* Allocate the Name stack */
2619: ctxt->nameTab = (xmlChar **) xmlMalloc(10 * sizeof(xmlChar *));
2620: ctxt->nameNr = 0;
2621: ctxt->nameMax = 10;
2622: ctxt->name = NULL;
2623:
1.1 daniel 2624: if (sax == NULL) ctxt->sax = &htmlDefaultSAXHandler;
2625: else {
2626: ctxt->sax = sax;
2627: memcpy(sax, &htmlDefaultSAXHandler, sizeof(htmlSAXHandler));
2628: }
2629: ctxt->userData = ctxt;
2630: ctxt->myDoc = NULL;
2631: ctxt->wellFormed = 1;
2632: ctxt->replaceEntities = 0;
2633: ctxt->html = 1;
2634: ctxt->record_info = 0;
1.21 daniel 2635: ctxt->validate = 0;
1.26 daniel 2636: ctxt->nbChars = 0;
1.1 daniel 2637: xmlInitNodeInfoSeq(&ctxt->node_seq);
2638: }
2639:
2640: /**
2641: * htmlFreeParserCtxt:
2642: * @ctxt: an HTML parser context
2643: *
2644: * Free all the memory used by a parser context. However the parsed
2645: * document in ctxt->myDoc is not freed.
2646: */
2647:
2648: void
2649: htmlFreeParserCtxt(htmlParserCtxtPtr ctxt)
2650: {
2651: htmlParserInputPtr input;
1.15 daniel 2652: xmlChar *oldname;
1.1 daniel 2653:
2654: if (ctxt == NULL) return;
2655:
2656: while ((input = inputPop(ctxt)) != NULL) {
2657: xmlFreeInputStream(input);
2658: }
2659:
1.11 daniel 2660: if (ctxt->nodeTab != NULL) xmlFree(ctxt->nodeTab);
1.24 daniel 2661: while ((oldname = htmlnamePop(ctxt)) != NULL) {
2662: xmlFree(oldname);
1.15 daniel 2663: }
2664: if (ctxt->nameTab != NULL) xmlFree(ctxt->nameTab);
1.11 daniel 2665: if (ctxt->inputTab != NULL) xmlFree(ctxt->inputTab);
2666: if (ctxt->version != NULL) xmlFree((char *) ctxt->version);
1.1 daniel 2667: if ((ctxt->sax != NULL) && (ctxt->sax != &htmlDefaultSAXHandler))
1.11 daniel 2668: xmlFree(ctxt->sax);
2669: xmlFree(ctxt);
1.1 daniel 2670: }
2671:
2672: /**
2673: * htmlCreateDocParserCtxt :
1.14 daniel 2674: * @cur: a pointer to an array of xmlChar
1.1 daniel 2675: * @encoding: a free form C string describing the HTML document encoding, or NULL
2676: *
2677: * Create a parser context for an HTML document.
2678: *
2679: * Returns the new parser context or NULL
2680: */
2681: htmlParserCtxtPtr
1.14 daniel 2682: htmlCreateDocParserCtxt(xmlChar *cur, const char *encoding) {
1.1 daniel 2683: htmlParserCtxtPtr ctxt;
2684: htmlParserInputPtr input;
2685: /* htmlCharEncoding enc; */
2686:
1.11 daniel 2687: ctxt = (htmlParserCtxtPtr) xmlMalloc(sizeof(htmlParserCtxt));
1.1 daniel 2688: if (ctxt == NULL) {
2689: perror("malloc");
2690: return(NULL);
2691: }
2692: htmlInitParserCtxt(ctxt);
1.11 daniel 2693: input = (htmlParserInputPtr) xmlMalloc(sizeof(htmlParserInput));
1.1 daniel 2694: if (input == NULL) {
2695: perror("malloc");
1.11 daniel 2696: xmlFree(ctxt);
1.1 daniel 2697: return(NULL);
2698: }
1.19 daniel 2699: memset(input, 0, sizeof(htmlParserInput));
1.1 daniel 2700:
2701: input->line = 1;
2702: input->col = 1;
2703: input->base = cur;
2704: input->cur = cur;
2705:
2706: inputPush(ctxt, input);
2707: return(ctxt);
2708: }
2709:
2710: /********************************************************************************
2711: * *
2712: * User entry points *
2713: * *
2714: ********************************************************************************/
2715:
2716: /**
2717: * htmlSAXParseDoc :
1.14 daniel 2718: * @cur: a pointer to an array of xmlChar
1.1 daniel 2719: * @encoding: a free form C string describing the HTML document encoding, or NULL
2720: * @sax: the SAX handler block
2721: * @userData: if using SAX, this pointer will be provided on callbacks.
2722: *
2723: * parse an HTML in-memory document and build a tree.
2724: * It use the given SAX function block to handle the parsing callback.
2725: * If sax is NULL, fallback to the default DOM tree building routines.
2726: *
2727: * Returns the resulting document tree
2728: */
2729:
2730: htmlDocPtr
1.14 daniel 2731: htmlSAXParseDoc(xmlChar *cur, const char *encoding, htmlSAXHandlerPtr sax, void *userData) {
1.1 daniel 2732: htmlDocPtr ret;
2733: htmlParserCtxtPtr ctxt;
2734:
2735: if (cur == NULL) return(NULL);
2736:
2737:
2738: ctxt = htmlCreateDocParserCtxt(cur, encoding);
2739: if (ctxt == NULL) return(NULL);
2740: if (sax != NULL) {
2741: ctxt->sax = sax;
2742: ctxt->userData = userData;
2743: }
2744:
2745: htmlParseDocument(ctxt);
2746: ret = ctxt->myDoc;
2747: if (sax != NULL) {
2748: ctxt->sax = NULL;
2749: ctxt->userData = NULL;
2750: }
2751: htmlFreeParserCtxt(ctxt);
2752:
2753: return(ret);
2754: }
2755:
2756: /**
2757: * htmlParseDoc :
1.14 daniel 2758: * @cur: a pointer to an array of xmlChar
1.1 daniel 2759: * @encoding: a free form C string describing the HTML document encoding, or NULL
2760: *
2761: * parse an HTML in-memory document and build a tree.
2762: *
2763: * Returns the resulting document tree
2764: */
2765:
2766: htmlDocPtr
1.14 daniel 2767: htmlParseDoc(xmlChar *cur, const char *encoding) {
1.1 daniel 2768: return(htmlSAXParseDoc(cur, encoding, NULL, NULL));
2769: }
2770:
2771:
2772: /**
2773: * htmlCreateFileParserCtxt :
2774: * @filename: the filename
2775: * @encoding: a free form C string describing the HTML document encoding, or NULL
2776: *
2777: * Create a parser context for a file content.
2778: * Automatic support for ZLIB/Compress compressed document is provided
2779: * by default if found at compile-time.
2780: *
2781: * Returns the new parser context or NULL
2782: */
2783: htmlParserCtxtPtr
2784: htmlCreateFileParserCtxt(const char *filename, const char *encoding)
2785: {
2786: htmlParserCtxtPtr ctxt;
2787: htmlParserInputPtr inputStream;
1.5 daniel 2788: xmlParserInputBufferPtr buf;
1.1 daniel 2789: /* htmlCharEncoding enc; */
2790:
1.5 daniel 2791: buf = xmlParserInputBufferCreateFilename(filename, XML_CHAR_ENCODING_NONE);
2792: if (buf == NULL) return(NULL);
1.1 daniel 2793:
1.11 daniel 2794: ctxt = (htmlParserCtxtPtr) xmlMalloc(sizeof(htmlParserCtxt));
1.1 daniel 2795: if (ctxt == NULL) {
2796: perror("malloc");
2797: return(NULL);
2798: }
1.19 daniel 2799: memset(ctxt, 0, sizeof(htmlParserCtxt));
1.1 daniel 2800: htmlInitParserCtxt(ctxt);
1.11 daniel 2801: inputStream = (htmlParserInputPtr) xmlMalloc(sizeof(htmlParserInput));
1.1 daniel 2802: if (inputStream == NULL) {
2803: perror("malloc");
1.11 daniel 2804: xmlFree(ctxt);
1.1 daniel 2805: return(NULL);
2806: }
1.19 daniel 2807: memset(inputStream, 0, sizeof(htmlParserInput));
1.1 daniel 2808:
1.11 daniel 2809: inputStream->filename = xmlMemStrdup(filename);
1.1 daniel 2810: inputStream->line = 1;
2811: inputStream->col = 1;
1.5 daniel 2812: inputStream->buf = buf;
1.21 daniel 2813: inputStream->directory = NULL;
1.1 daniel 2814:
1.5 daniel 2815: inputStream->base = inputStream->buf->buffer->content;
2816: inputStream->cur = inputStream->buf->buffer->content;
2817: inputStream->free = NULL;
1.1 daniel 2818:
2819: inputPush(ctxt, inputStream);
2820: return(ctxt);
2821: }
2822:
2823: /**
2824: * htmlSAXParseFile :
2825: * @filename: the filename
2826: * @encoding: a free form C string describing the HTML document encoding, or NULL
2827: * @sax: the SAX handler block
2828: * @userData: if using SAX, this pointer will be provided on callbacks.
2829: *
2830: * parse an HTML file and build a tree. Automatic support for ZLIB/Compress
2831: * compressed document is provided by default if found at compile-time.
2832: * It use the given SAX function block to handle the parsing callback.
2833: * If sax is NULL, fallback to the default DOM tree building routines.
2834: *
2835: * Returns the resulting document tree
2836: */
2837:
2838: htmlDocPtr
2839: htmlSAXParseFile(const char *filename, const char *encoding, htmlSAXHandlerPtr sax,
2840: void *userData) {
2841: htmlDocPtr ret;
2842: htmlParserCtxtPtr ctxt;
2843:
2844: ctxt = htmlCreateFileParserCtxt(filename, encoding);
2845: if (ctxt == NULL) return(NULL);
2846: if (sax != NULL) {
2847: ctxt->sax = sax;
2848: ctxt->userData = userData;
2849: }
2850:
2851: htmlParseDocument(ctxt);
2852:
2853: ret = ctxt->myDoc;
2854: if (sax != NULL) {
2855: ctxt->sax = NULL;
2856: ctxt->userData = NULL;
2857: }
2858: htmlFreeParserCtxt(ctxt);
2859:
2860: return(ret);
2861: }
2862:
2863: /**
2864: * htmlParseFile :
2865: * @filename: the filename
2866: * @encoding: a free form C string describing the HTML document encoding, or NULL
2867: *
2868: * parse an HTML file and build a tree. Automatic support for ZLIB/Compress
2869: * compressed document is provided by default if found at compile-time.
2870: *
2871: * Returns the resulting document tree
2872: */
2873:
2874: htmlDocPtr
2875: htmlParseFile(const char *filename, const char *encoding) {
2876: return(htmlSAXParseFile(filename, encoding, NULL, NULL));
2877: }
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