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