/* * HTMLparser.c : an HTML 4.0 non-verifying parser * * See Copyright for the status of this software. * * daniel@veillard.com */ #define IN_LIBXML #include "libxml.h" #ifdef LIBXML_HTML_ENABLED #include #ifdef HAVE_CTYPE_H #include #endif #ifdef HAVE_STDLIB_H #include #endif #ifdef HAVE_SYS_STAT_H #include #endif #ifdef HAVE_FCNTL_H #include #endif #ifdef HAVE_UNISTD_H #include #endif #ifdef LIBXML_ZLIB_ENABLED #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include "buf.h" #include "enc.h" #define HTML_MAX_NAMELEN 1000 #define HTML_PARSER_BIG_BUFFER_SIZE 1000 #define HTML_PARSER_BUFFER_SIZE 100 /* #define DEBUG */ /* #define DEBUG_PUSH */ static int htmlOmittedDefaultValue = 1; xmlChar * htmlDecodeEntities(htmlParserCtxtPtr ctxt, int len, xmlChar end, xmlChar end2, xmlChar end3); static void htmlParseComment(htmlParserCtxtPtr ctxt); /************************************************************************ * * * Some factorized error routines * * * ************************************************************************/ /** * htmlErrMemory: * @ctxt: an HTML parser context * @extra: extra information * * Handle a redefinition of attribute error */ static void htmlErrMemory(xmlParserCtxtPtr ctxt, const char *extra) { if ((ctxt != NULL) && (ctxt->disableSAX != 0) && (ctxt->instate == XML_PARSER_EOF)) return; if (ctxt != NULL) { ctxt->errNo = XML_ERR_NO_MEMORY; ctxt->instate = XML_PARSER_EOF; ctxt->disableSAX = 1; } if (extra) __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, extra, NULL, NULL, 0, 0, "Memory allocation failed : %s\n", extra); else __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, NULL, NULL, NULL, 0, 0, "Memory allocation failed\n"); } /** * htmlParseErr: * @ctxt: an HTML parser context * @error: the error number * @msg: the error message * @str1: string infor * @str2: string infor * * Handle a fatal parser error, i.e. violating Well-Formedness constraints */ static void LIBXML_ATTR_FORMAT(3,0) htmlParseErr(xmlParserCtxtPtr ctxt, xmlParserErrors error, const char *msg, const xmlChar *str1, const xmlChar *str2) { if ((ctxt != NULL) && (ctxt->disableSAX != 0) && (ctxt->instate == XML_PARSER_EOF)) return; if (ctxt != NULL) ctxt->errNo = error; __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_HTML, error, XML_ERR_ERROR, NULL, 0, (const char *) str1, (const char *) str2, NULL, 0, 0, msg, str1, str2); if (ctxt != NULL) ctxt->wellFormed = 0; } /** * htmlParseErrInt: * @ctxt: an HTML parser context * @error: the error number * @msg: the error message * @val: integer info * * Handle a fatal parser error, i.e. violating Well-Formedness constraints */ static void LIBXML_ATTR_FORMAT(3,0) htmlParseErrInt(xmlParserCtxtPtr ctxt, xmlParserErrors error, const char *msg, int val) { if ((ctxt != NULL) && (ctxt->disableSAX != 0) && (ctxt->instate == XML_PARSER_EOF)) return; if (ctxt != NULL) ctxt->errNo = error; __xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_HTML, error, XML_ERR_ERROR, NULL, 0, NULL, NULL, NULL, val, 0, msg, val); if (ctxt != NULL) ctxt->wellFormed = 0; } /************************************************************************ * * * Parser stacks related functions and macros * * * ************************************************************************/ /** * htmlnamePush: * @ctxt: an HTML parser context * @value: the element name * * Pushes a new element name on top of the name stack * * Returns 0 in case of error, the index in the stack otherwise */ static int htmlnamePush(htmlParserCtxtPtr ctxt, const xmlChar * value) { if ((ctxt->html < 3) && (xmlStrEqual(value, BAD_CAST "head"))) ctxt->html = 3; if ((ctxt->html < 10) && (xmlStrEqual(value, BAD_CAST "body"))) ctxt->html = 10; if (ctxt->nameNr >= ctxt->nameMax) { ctxt->nameMax *= 2; ctxt->nameTab = (const xmlChar * *) xmlRealloc((xmlChar * *)ctxt->nameTab, ctxt->nameMax * sizeof(ctxt->nameTab[0])); if (ctxt->nameTab == NULL) { htmlErrMemory(ctxt, NULL); return (0); } } ctxt->nameTab[ctxt->nameNr] = value; ctxt->name = value; return (ctxt->nameNr++); } /** * htmlnamePop: * @ctxt: an HTML parser context * * Pops the top element name from the name stack * * Returns the name just removed */ static const xmlChar * htmlnamePop(htmlParserCtxtPtr ctxt) { const xmlChar *ret; if (ctxt->nameNr <= 0) return (NULL); ctxt->nameNr--; if (ctxt->nameNr < 0) return (NULL); if (ctxt->nameNr > 0) ctxt->name = ctxt->nameTab[ctxt->nameNr - 1]; else ctxt->name = NULL; ret = ctxt->nameTab[ctxt->nameNr]; ctxt->nameTab[ctxt->nameNr] = NULL; return (ret); } /** * htmlNodeInfoPush: * @ctxt: an HTML parser context * @value: the node info * * Pushes a new element name on top of the node info stack * * Returns 0 in case of error, the index in the stack otherwise */ static int htmlNodeInfoPush(htmlParserCtxtPtr ctxt, htmlParserNodeInfo *value) { if (ctxt->nodeInfoNr >= ctxt->nodeInfoMax) { if (ctxt->nodeInfoMax == 0) ctxt->nodeInfoMax = 5; ctxt->nodeInfoMax *= 2; ctxt->nodeInfoTab = (htmlParserNodeInfo *) xmlRealloc((htmlParserNodeInfo *)ctxt->nodeInfoTab, ctxt->nodeInfoMax * sizeof(ctxt->nodeInfoTab[0])); if (ctxt->nodeInfoTab == NULL) { htmlErrMemory(ctxt, NULL); return (0); } } ctxt->nodeInfoTab[ctxt->nodeInfoNr] = *value; ctxt->nodeInfo = &ctxt->nodeInfoTab[ctxt->nodeInfoNr]; return (ctxt->nodeInfoNr++); } /** * htmlNodeInfoPop: * @ctxt: an HTML parser context * * Pops the top element name from the node info stack * * Returns 0 in case of error, the pointer to NodeInfo otherwise */ static htmlParserNodeInfo * htmlNodeInfoPop(htmlParserCtxtPtr ctxt) { if (ctxt->nodeInfoNr <= 0) return (NULL); ctxt->nodeInfoNr--; if (ctxt->nodeInfoNr < 0) return (NULL); if (ctxt->nodeInfoNr > 0) ctxt->nodeInfo = &ctxt->nodeInfoTab[ctxt->nodeInfoNr - 1]; else ctxt->nodeInfo = NULL; return &ctxt->nodeInfoTab[ctxt->nodeInfoNr]; } /* * Macros for accessing the content. Those should be used only by the parser, * and not exported. * * Dirty macros, i.e. one need to make assumption on the context to use them * * CUR_PTR return the current pointer to the xmlChar to be parsed. * CUR returns the current xmlChar value, i.e. a 8 bit value if compiled * in ISO-Latin or UTF-8, and the current 16 bit value if compiled * in UNICODE mode. This should be used internally by the parser * only to compare to ASCII values otherwise it would break when * running with UTF-8 encoding. * NXT(n) returns the n'th next xmlChar. Same as CUR is should be used only * to compare on ASCII based substring. * UPP(n) returns the n'th next xmlChar converted to uppercase. Same as CUR * it should be used only to compare on ASCII based substring. * SKIP(n) Skip n xmlChar, and must also be used only to skip ASCII defined * strings without newlines within the parser. * * Clean macros, not dependent of an ASCII context, expect UTF-8 encoding * * CURRENT Returns the current char value, with the full decoding of * UTF-8 if we are using this mode. It returns an int. * NEXT Skip to the next character, this does the proper decoding * in UTF-8 mode. It also pop-up unfinished entities on the fly. * NEXTL(l) Skip the current unicode character of l xmlChars long. * COPY(to) copy one char to *to, increment CUR_PTR and to accordingly */ #define UPPER (toupper(*ctxt->input->cur)) #define SKIP(val) ctxt->input->cur += (val),ctxt->input->col+=(val) #define NXT(val) ctxt->input->cur[(val)] #define UPP(val) (toupper(ctxt->input->cur[(val)])) #define CUR_PTR ctxt->input->cur #define BASE_PTR ctxt->input->base #define SHRINK if ((ctxt->input->cur - ctxt->input->base > 2 * INPUT_CHUNK) && \ (ctxt->input->end - ctxt->input->cur < 2 * INPUT_CHUNK)) \ xmlParserInputShrink(ctxt->input) #define GROW if ((ctxt->progressive == 0) && \ (ctxt->input->end - ctxt->input->cur < INPUT_CHUNK)) \ xmlParserInputGrow(ctxt->input, INPUT_CHUNK) #define CURRENT ((int) (*ctxt->input->cur)) #define SKIP_BLANKS htmlSkipBlankChars(ctxt) /* Imported from XML */ /* #define CUR (ctxt->token ? ctxt->token : (int) (*ctxt->input->cur)) */ #define CUR ((int) (*ctxt->input->cur)) #define NEXT xmlNextChar(ctxt) #define RAW (ctxt->token ? -1 : (*ctxt->input->cur)) #define NEXTL(l) do { \ if (*(ctxt->input->cur) == '\n') { \ ctxt->input->line++; ctxt->input->col = 1; \ } else ctxt->input->col++; \ ctxt->token = 0; ctxt->input->cur += l; \ } while (0) /************ \ if (*ctxt->input->cur == '%') xmlParserHandlePEReference(ctxt); \ if (*ctxt->input->cur == '&') xmlParserHandleReference(ctxt); ************/ #define CUR_CHAR(l) htmlCurrentChar(ctxt, &l) #define CUR_SCHAR(s, l) xmlStringCurrentChar(ctxt, s, &l) #define COPY_BUF(l,b,i,v) \ if (l == 1) b[i++] = (xmlChar) v; \ else i += xmlCopyChar(l,&b[i],v) /** * htmlFindEncoding: * @the HTML parser context * * Ty to find and encoding in the current data available in the input * buffer this is needed to try to switch to the proper encoding when * one face a character error. * That's an heuristic, since it's operating outside of parsing it could * try to use a meta which had been commented out, that's the reason it * should only be used in case of error, not as a default. * * Returns an encoding string or NULL if not found, the string need to * be freed */ static xmlChar * htmlFindEncoding(xmlParserCtxtPtr ctxt) { const xmlChar *start, *cur, *end; if ((ctxt == NULL) || (ctxt->input == NULL) || (ctxt->input->encoding != NULL) || (ctxt->input->buf == NULL) || (ctxt->input->buf->encoder != NULL)) return(NULL); if ((ctxt->input->cur == NULL) || (ctxt->input->end == NULL)) return(NULL); start = ctxt->input->cur; end = ctxt->input->end; /* we also expect the input buffer to be zero terminated */ if (*end != 0) return(NULL); cur = xmlStrcasestr(start, BAD_CAST "HTTP-EQUIV"); if (cur == NULL) return(NULL); cur = xmlStrcasestr(cur, BAD_CAST "CONTENT"); if (cur == NULL) return(NULL); cur = xmlStrcasestr(cur, BAD_CAST "CHARSET="); if (cur == NULL) return(NULL); cur += 8; start = cur; while (((*cur >= 'A') && (*cur <= 'Z')) || ((*cur >= 'a') && (*cur <= 'z')) || ((*cur >= '0') && (*cur <= '9')) || (*cur == '-') || (*cur == '_') || (*cur == ':') || (*cur == '/')) cur++; if (cur == start) return(NULL); return(xmlStrndup(start, cur - start)); } /** * htmlCurrentChar: * @ctxt: the HTML parser context * @len: pointer to the length of the char read * * The current char value, if using UTF-8 this may actually span multiple * bytes in the input buffer. Implement the end of line normalization: * 2.11 End-of-Line Handling * If the encoding is unspecified, in the case we find an ISO-Latin-1 * char, then the encoding converter is plugged in automatically. * * Returns the current char value and its length */ static int htmlCurrentChar(xmlParserCtxtPtr ctxt, int *len) { const unsigned char *cur; unsigned char c; unsigned int val; if (ctxt->instate == XML_PARSER_EOF) return(0); if (ctxt->token != 0) { *len = 0; return(ctxt->token); } if (ctxt->charset != XML_CHAR_ENCODING_UTF8) { xmlChar * guess; xmlCharEncodingHandlerPtr handler; /* * Assume it's a fixed length encoding (1) with * a compatible encoding for the ASCII set, since * HTML constructs only use < 128 chars */ if ((int) *ctxt->input->cur < 0x80) { *len = 1; if ((*ctxt->input->cur == 0) && (ctxt->input->cur < ctxt->input->end)) { htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR, "Char 0x%X out of allowed range\n", 0); return(' '); } return((int) *ctxt->input->cur); } /* * Humm this is bad, do an automatic flow conversion */ guess = htmlFindEncoding(ctxt); if (guess == NULL) { xmlSwitchEncoding(ctxt, XML_CHAR_ENCODING_8859_1); } else { if (ctxt->input->encoding != NULL) xmlFree((xmlChar *) ctxt->input->encoding); ctxt->input->encoding = guess; handler = xmlFindCharEncodingHandler((const char *) guess); if (handler != NULL) { /* * Don't use UTF-8 encoder which isn't required and * can produce invalid UTF-8. */ if (!xmlStrEqual(BAD_CAST handler->name, BAD_CAST "UTF-8")) xmlSwitchToEncoding(ctxt, handler); } else { htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING, "Unsupported encoding %s", guess, NULL); } } ctxt->charset = XML_CHAR_ENCODING_UTF8; } /* * We are supposed to handle UTF8, check it's valid * From rfc2044: encoding of the Unicode values on UTF-8: * * UCS-4 range (hex.) UTF-8 octet sequence (binary) * 0000 0000-0000 007F 0xxxxxxx * 0000 0080-0000 07FF 110xxxxx 10xxxxxx * 0000 0800-0000 FFFF 1110xxxx 10xxxxxx 10xxxxxx * * Check for the 0x110000 limit too */ cur = ctxt->input->cur; c = *cur; if (c & 0x80) { if ((c & 0x40) == 0) goto encoding_error; if (cur[1] == 0) { xmlParserInputGrow(ctxt->input, INPUT_CHUNK); cur = ctxt->input->cur; } if ((cur[1] & 0xc0) != 0x80) goto encoding_error; if ((c & 0xe0) == 0xe0) { if (cur[2] == 0) { xmlParserInputGrow(ctxt->input, INPUT_CHUNK); cur = ctxt->input->cur; } if ((cur[2] & 0xc0) != 0x80) goto encoding_error; if ((c & 0xf0) == 0xf0) { if (cur[3] == 0) { xmlParserInputGrow(ctxt->input, INPUT_CHUNK); cur = ctxt->input->cur; } if (((c & 0xf8) != 0xf0) || ((cur[3] & 0xc0) != 0x80)) goto encoding_error; /* 4-byte code */ *len = 4; val = (cur[0] & 0x7) << 18; val |= (cur[1] & 0x3f) << 12; val |= (cur[2] & 0x3f) << 6; val |= cur[3] & 0x3f; if (val < 0x10000) goto encoding_error; } else { /* 3-byte code */ *len = 3; val = (cur[0] & 0xf) << 12; val |= (cur[1] & 0x3f) << 6; val |= cur[2] & 0x3f; if (val < 0x800) goto encoding_error; } } else { /* 2-byte code */ *len = 2; val = (cur[0] & 0x1f) << 6; val |= cur[1] & 0x3f; if (val < 0x80) goto encoding_error; } if (!IS_CHAR(val)) { htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR, "Char 0x%X out of allowed range\n", val); } return(val); } else { if ((*ctxt->input->cur == 0) && (ctxt->input->cur < ctxt->input->end)) { htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR, "Char 0x%X out of allowed range\n", 0); *len = 1; return(' '); } /* 1-byte code */ *len = 1; return((int) *ctxt->input->cur); } encoding_error: /* * If we detect an UTF8 error that probably mean that the * input encoding didn't get properly advertised in the * declaration header. Report the error and switch the encoding * to ISO-Latin-1 (if you don't like this policy, just declare the * encoding !) */ { char buffer[150]; if (ctxt->input->end - ctxt->input->cur >= 4) { snprintf(buffer, 149, "Bytes: 0x%02X 0x%02X 0x%02X 0x%02X\n", ctxt->input->cur[0], ctxt->input->cur[1], ctxt->input->cur[2], ctxt->input->cur[3]); } else { snprintf(buffer, 149, "Bytes: 0x%02X\n", ctxt->input->cur[0]); } htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING, "Input is not proper UTF-8, indicate encoding !\n", BAD_CAST buffer, NULL); } /* * Don't switch encodings twice. Note that if there's an encoder, we * shouldn't receive invalid UTF-8 anyway. * * Note that if ctxt->input->buf == NULL, switching encodings is * impossible, see Gitlab issue #34. */ if ((ctxt->input->buf != NULL) && (ctxt->input->buf->encoder == NULL)) xmlSwitchEncoding(ctxt, XML_CHAR_ENCODING_8859_1); *len = 1; return((int) *ctxt->input->cur); } /** * htmlSkipBlankChars: * @ctxt: the HTML parser context * * skip all blanks character found at that point in the input streams. * * Returns the number of space chars skipped */ static int htmlSkipBlankChars(xmlParserCtxtPtr ctxt) { int res = 0; while (IS_BLANK_CH(*(ctxt->input->cur))) { if ((*ctxt->input->cur == 0) && (xmlParserInputGrow(ctxt->input, INPUT_CHUNK) <= 0)) { xmlPopInput(ctxt); } else { if (*(ctxt->input->cur) == '\n') { ctxt->input->line++; ctxt->input->col = 1; } else ctxt->input->col++; ctxt->input->cur++; if (*ctxt->input->cur == 0) xmlParserInputGrow(ctxt->input, INPUT_CHUNK); } res++; } return(res); } /************************************************************************ * * * The list of HTML elements and their properties * * * ************************************************************************/ /* * Start Tag: 1 means the start tag can be omitted * End Tag: 1 means the end tag can be omitted * 2 means it's forbidden (empty elements) * 3 means the tag is stylistic and should be closed easily * Depr: this element is deprecated * DTD: 1 means that this element is valid only in the Loose DTD * 2 means that this element is valid only in the Frameset DTD * * Name,Start Tag,End Tag,Save End,Empty,Deprecated,DTD,inline,Description , subElements , impliedsubelt , Attributes, userdata */ /* Definitions and a couple of vars for HTML Elements */ #define FONTSTYLE "tt", "i", "b", "u", "s", "strike", "big", "small" #define NB_FONTSTYLE 8 #define PHRASE "em", "strong", "dfn", "code", "samp", "kbd", "var", "cite", "abbr", "acronym" #define NB_PHRASE 10 #define SPECIAL "a", "img", "applet", "embed", "object", "font", "basefont", "br", "script", "map", "q", "sub", "sup", "span", "bdo", "iframe" #define NB_SPECIAL 16 #define INLINE FONTSTYLE, PHRASE, SPECIAL, FORMCTRL #define NB_INLINE NB_PCDATA + NB_FONTSTYLE + NB_PHRASE + NB_SPECIAL + NB_FORMCTRL #define BLOCK HEADING, LIST, "pre", "p", "dl", "div", "center", "noscript", "noframes", "blockquote", "form", "isindex", "hr", "table", "fieldset", "address" #define NB_BLOCK NB_HEADING + NB_LIST + 14 #define FORMCTRL "input", "select", "textarea", "label", "button" #define NB_FORMCTRL 5 #define PCDATA #define NB_PCDATA 0 #define HEADING "h1", "h2", "h3", "h4", "h5", "h6" #define NB_HEADING 6 #define LIST "ul", "ol", "dir", "menu" #define NB_LIST 4 #define MODIFIER #define NB_MODIFIER 0 #define FLOW BLOCK,INLINE #define NB_FLOW NB_BLOCK + NB_INLINE #define EMPTY NULL static const char* const html_flow[] = { FLOW, NULL } ; static const char* const html_inline[] = { INLINE, NULL } ; /* placeholders: elts with content but no subelements */ static const char* const html_pcdata[] = { NULL } ; #define html_cdata html_pcdata /* ... and for HTML Attributes */ #define COREATTRS "id", "class", "style", "title" #define NB_COREATTRS 4 #define I18N "lang", "dir" #define NB_I18N 2 #define EVENTS "onclick", "ondblclick", "onmousedown", "onmouseup", "onmouseover", "onmouseout", "onkeypress", "onkeydown", "onkeyup" #define NB_EVENTS 9 #define ATTRS COREATTRS,I18N,EVENTS #define NB_ATTRS NB_NB_COREATTRS + NB_I18N + NB_EVENTS #define CELLHALIGN "align", "char", "charoff" #define NB_CELLHALIGN 3 #define CELLVALIGN "valign" #define NB_CELLVALIGN 1 static const char* const html_attrs[] = { ATTRS, NULL } ; static const char* const core_i18n_attrs[] = { COREATTRS, I18N, NULL } ; static const char* const core_attrs[] = { COREATTRS, NULL } ; static const char* const i18n_attrs[] = { I18N, NULL } ; /* Other declarations that should go inline ... */ static const char* const a_attrs[] = { ATTRS, "charset", "type", "name", "href", "hreflang", "rel", "rev", "accesskey", "shape", "coords", "tabindex", "onfocus", "onblur", NULL } ; static const char* const target_attr[] = { "target", NULL } ; static const char* const rows_cols_attr[] = { "rows", "cols", NULL } ; static const char* const alt_attr[] = { "alt", NULL } ; static const char* const src_alt_attrs[] = { "src", "alt", NULL } ; static const char* const href_attrs[] = { "href", NULL } ; static const char* const clear_attrs[] = { "clear", NULL } ; static const char* const inline_p[] = { INLINE, "p", NULL } ; static const char* const flow_param[] = { FLOW, "param", NULL } ; static const char* const applet_attrs[] = { COREATTRS , "codebase", "archive", "alt", "name", "height", "width", "align", "hspace", "vspace", NULL } ; static const char* const area_attrs[] = { "shape", "coords", "href", "nohref", "tabindex", "accesskey", "onfocus", "onblur", NULL } ; static const char* const basefont_attrs[] = { "id", "size", "color", "face", NULL } ; static const char* const quote_attrs[] = { ATTRS, "cite", NULL } ; static const char* const body_contents[] = { FLOW, "ins", "del", NULL } ; static const char* const body_attrs[] = { ATTRS, "onload", "onunload", NULL } ; static const char* const body_depr[] = { "background", "bgcolor", "text", "link", "vlink", "alink", NULL } ; static const char* const button_attrs[] = { ATTRS, "name", "value", "type", "disabled", "tabindex", "accesskey", "onfocus", "onblur", NULL } ; static const char* const col_attrs[] = { ATTRS, "span", "width", CELLHALIGN, CELLVALIGN, NULL } ; static const char* const col_elt[] = { "col", NULL } ; static const char* const edit_attrs[] = { ATTRS, "datetime", "cite", NULL } ; static const char* const compact_attrs[] = { ATTRS, "compact", NULL } ; static const char* const dl_contents[] = { "dt", "dd", NULL } ; static const char* const compact_attr[] = { "compact", NULL } ; static const char* const label_attr[] = { "label", NULL } ; static const char* const fieldset_contents[] = { FLOW, "legend" } ; static const char* const font_attrs[] = { COREATTRS, I18N, "size", "color", "face" , NULL } ; static const char* const form_contents[] = { HEADING, LIST, INLINE, "pre", "p", "div", "center", "noscript", "noframes", "blockquote", "isindex", "hr", "table", "fieldset", "address", NULL } ; static const char* const form_attrs[] = { ATTRS, "method", "enctype", "accept", "name", "onsubmit", "onreset", "accept-charset", NULL } ; static const char* const frame_attrs[] = { COREATTRS, "longdesc", "name", "src", "frameborder", "marginwidth", "marginheight", "noresize", "scrolling" , NULL } ; static const char* const frameset_attrs[] = { COREATTRS, "rows", "cols", "onload", "onunload", NULL } ; static const char* const frameset_contents[] = { "frameset", "frame", "noframes", NULL } ; static const char* const head_attrs[] = { I18N, "profile", NULL } ; static const char* const head_contents[] = { "title", "isindex", "base", "script", "style", "meta", "link", "object", NULL } ; static const char* const hr_depr[] = { "align", "noshade", "size", "width", NULL } ; static const char* const version_attr[] = { "version", NULL } ; static const char* const html_content[] = { "head", "body", "frameset", NULL } ; static const char* const iframe_attrs[] = { COREATTRS, "longdesc", "name", "src", "frameborder", "marginwidth", "marginheight", "scrolling", "align", "height", "width", NULL } ; static const char* const img_attrs[] = { ATTRS, "longdesc", "name", "height", "width", "usemap", "ismap", NULL } ; static const char* const embed_attrs[] = { COREATTRS, "align", "alt", "border", "code", "codebase", "frameborder", "height", "hidden", "hspace", "name", "palette", "pluginspace", "pluginurl", "src", "type", "units", "vspace", "width", NULL } ; static const char* const input_attrs[] = { ATTRS, "type", "name", "value", "checked", "disabled", "readonly", "size", "maxlength", "src", "alt", "usemap", "ismap", "tabindex", "accesskey", "onfocus", "onblur", "onselect", "onchange", "accept", NULL } ; static const char* const prompt_attrs[] = { COREATTRS, I18N, "prompt", NULL } ; static const char* const label_attrs[] = { ATTRS, "for", "accesskey", "onfocus", "onblur", NULL } ; static const char* const legend_attrs[] = { ATTRS, "accesskey", NULL } ; static const char* const align_attr[] = { "align", NULL } ; static const char* const link_attrs[] = { ATTRS, "charset", "href", "hreflang", "type", "rel", "rev", "media", NULL } ; static const char* const map_contents[] = { BLOCK, "area", NULL } ; static const char* const name_attr[] = { "name", NULL } ; static const char* const action_attr[] = { "action", NULL } ; static const char* const blockli_elt[] = { BLOCK, "li", NULL } ; static const char* const meta_attrs[] = { I18N, "http-equiv", "name", "scheme", "charset", NULL } ; static const char* const content_attr[] = { "content", NULL } ; static const char* const type_attr[] = { "type", NULL } ; static const char* const noframes_content[] = { "body", FLOW MODIFIER, NULL } ; static const char* const object_contents[] = { FLOW, "param", NULL } ; static const char* const object_attrs[] = { ATTRS, "declare", "classid", "codebase", "data", "type", "codetype", "archive", "standby", "height", "width", "usemap", "name", "tabindex", NULL } ; static const char* const object_depr[] = { "align", "border", "hspace", "vspace", NULL } ; static const char* const ol_attrs[] = { "type", "compact", "start", NULL} ; static const char* const option_elt[] = { "option", NULL } ; static const char* const optgroup_attrs[] = { ATTRS, "disabled", NULL } ; static const char* const option_attrs[] = { ATTRS, "disabled", "label", "selected", "value", NULL } ; static const char* const param_attrs[] = { "id", "value", "valuetype", "type", NULL } ; static const char* const width_attr[] = { "width", NULL } ; static const char* const pre_content[] = { PHRASE, "tt", "i", "b", "u", "s", "strike", "a", "br", "script", "map", "q", "span", "bdo", "iframe", NULL } ; static const char* const script_attrs[] = { "charset", "src", "defer", "event", "for", NULL } ; static const char* const language_attr[] = { "language", NULL } ; static const char* const select_content[] = { "optgroup", "option", NULL } ; static const char* const select_attrs[] = { ATTRS, "name", "size", "multiple", "disabled", "tabindex", "onfocus", "onblur", "onchange", NULL } ; static const char* const style_attrs[] = { I18N, "media", "title", NULL } ; static const char* const table_attrs[] = { ATTRS, "summary", "width", "border", "frame", "rules", "cellspacing", "cellpadding", "datapagesize", NULL } ; static const char* const table_depr[] = { "align", "bgcolor", NULL } ; static const char* const table_contents[] = { "caption", "col", "colgroup", "thead", "tfoot", "tbody", "tr", NULL} ; static const char* const tr_elt[] = { "tr", NULL } ; static const char* const talign_attrs[] = { ATTRS, CELLHALIGN, CELLVALIGN, NULL} ; static const char* const th_td_depr[] = { "nowrap", "bgcolor", "width", "height", NULL } ; static const char* const th_td_attr[] = { ATTRS, "abbr", "axis", "headers", "scope", "rowspan", "colspan", CELLHALIGN, CELLVALIGN, NULL } ; static const char* const textarea_attrs[] = { ATTRS, "name", "disabled", "readonly", "tabindex", "accesskey", "onfocus", "onblur", "onselect", "onchange", NULL } ; static const char* const tr_contents[] = { "th", "td", NULL } ; static const char* const bgcolor_attr[] = { "bgcolor", NULL } ; static const char* const li_elt[] = { "li", NULL } ; static const char* const ul_depr[] = { "type", "compact", NULL} ; static const char* const dir_attr[] = { "dir", NULL} ; #define DECL (const char**) static const htmlElemDesc html40ElementTable[] = { { "a", 0, 0, 0, 0, 0, 0, 1, "anchor ", DECL html_inline , NULL , DECL a_attrs , DECL target_attr, NULL }, { "abbr", 0, 0, 0, 0, 0, 0, 1, "abbreviated form", DECL html_inline , NULL , DECL html_attrs, NULL, NULL }, { "acronym", 0, 0, 0, 0, 0, 0, 1, "", DECL html_inline , NULL , DECL html_attrs, NULL, NULL }, { "address", 0, 0, 0, 0, 0, 0, 0, "information on author ", DECL inline_p , NULL , DECL html_attrs, NULL, NULL }, { "applet", 0, 0, 0, 0, 1, 1, 2, "java applet ", DECL flow_param , NULL , NULL , DECL applet_attrs, NULL }, { "area", 0, 2, 2, 1, 0, 0, 0, "client-side image map area ", EMPTY , NULL , DECL area_attrs , DECL target_attr, DECL alt_attr }, { "b", 0, 3, 0, 0, 0, 0, 1, "bold text style", DECL html_inline , NULL , DECL html_attrs, NULL, NULL }, { "base", 0, 2, 2, 1, 0, 0, 0, "document base uri ", EMPTY , NULL , NULL , DECL target_attr, DECL href_attrs }, { "basefont", 0, 2, 2, 1, 1, 1, 1, "base font size " , EMPTY , NULL , NULL, DECL basefont_attrs, NULL }, { "bdo", 0, 0, 0, 0, 0, 0, 1, "i18n bidi over-ride ", DECL html_inline , NULL , DECL core_i18n_attrs, NULL, DECL dir_attr }, { "big", 0, 3, 0, 0, 0, 0, 1, "large text style", DECL html_inline , NULL , DECL html_attrs, NULL, NULL }, { "blockquote", 0, 0, 0, 0, 0, 0, 0, "long quotation ", DECL html_flow , NULL , DECL quote_attrs , NULL, NULL }, { "body", 1, 1, 0, 0, 0, 0, 0, "document body ", DECL body_contents , "div" , DECL body_attrs, DECL body_depr, NULL }, { "br", 0, 2, 2, 1, 0, 0, 1, "forced line break ", EMPTY , NULL , DECL core_attrs, DECL clear_attrs , NULL }, { "button", 0, 0, 0, 0, 0, 0, 2, "push button ", DECL html_flow MODIFIER , NULL , DECL button_attrs, NULL, NULL }, { "caption", 0, 0, 0, 0, 0, 0, 0, "table caption ", DECL html_inline , NULL , DECL html_attrs, NULL, NULL }, { "center", 0, 3, 0, 0, 1, 1, 0, "shorthand for div align=center ", DECL html_flow , NULL , NULL, DECL html_attrs, NULL }, { "cite", 0, 0, 0, 0, 0, 0, 1, "citation", DECL html_inline , NULL , DECL html_attrs, NULL, NULL }, { "code", 0, 0, 0, 0, 0, 0, 1, "computer code fragment", DECL html_inline , NULL , DECL html_attrs, NULL, NULL }, { "col", 0, 2, 2, 1, 0, 0, 0, "table column ", EMPTY , NULL , DECL col_attrs , NULL, NULL }, { "colgroup", 0, 1, 0, 0, 0, 0, 0, "table column group ", DECL col_elt , "col" , DECL col_attrs , NULL, NULL }, { "dd", 0, 1, 0, 0, 0, 0, 0, "definition description ", DECL html_flow , NULL , DECL html_attrs, NULL, NULL }, { "del", 0, 0, 0, 0, 0, 0, 2, "deleted text ", DECL html_flow , NULL , DECL edit_attrs , NULL, NULL }, { "dfn", 0, 0, 0, 0, 0, 0, 1, "instance definition", DECL html_inline , NULL , DECL html_attrs, NULL, NULL }, { "dir", 0, 0, 0, 0, 1, 1, 0, "directory list", DECL blockli_elt, "li" , NULL, DECL compact_attrs, NULL }, { "div", 0, 0, 0, 0, 0, 0, 0, "generic language/style container", DECL html_flow, NULL, DECL html_attrs, DECL align_attr, NULL }, { "dl", 0, 0, 0, 0, 0, 0, 0, "definition list ", DECL dl_contents , "dd" , DECL html_attrs, DECL compact_attr, NULL }, { "dt", 0, 1, 0, 0, 0, 0, 0, "definition term ", DECL html_inline, NULL, DECL html_attrs, NULL, NULL }, { "em", 0, 3, 0, 0, 0, 0, 1, "emphasis", DECL html_inline, NULL, DECL html_attrs, NULL, NULL }, { "embed", 0, 1, 0, 0, 1, 1, 1, "generic embedded object ", EMPTY, NULL, DECL embed_attrs, NULL, NULL }, { "fieldset", 0, 0, 0, 0, 0, 0, 0, "form control group ", DECL fieldset_contents , NULL, DECL html_attrs, NULL, NULL }, { "font", 0, 3, 0, 0, 1, 1, 1, "local change to font ", DECL html_inline, NULL, NULL, DECL font_attrs, NULL }, { "form", 0, 0, 0, 0, 0, 0, 0, "interactive form ", DECL form_contents, "fieldset", DECL form_attrs , DECL target_attr, DECL action_attr }, { "frame", 0, 2, 2, 1, 0, 2, 0, "subwindow " , EMPTY, NULL, NULL, DECL frame_attrs, NULL }, { "frameset", 0, 0, 0, 0, 0, 2, 0, "window subdivision" , DECL frameset_contents, "noframes" , NULL , DECL frameset_attrs, NULL }, { "h1", 0, 0, 0, 0, 0, 0, 0, "heading ", DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL }, { "h2", 0, 0, 0, 0, 0, 0, 0, "heading ", DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL }, { "h3", 0, 0, 0, 0, 0, 0, 0, "heading ", DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL }, { "h4", 0, 0, 0, 0, 0, 0, 0, "heading ", DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL }, { "h5", 0, 0, 0, 0, 0, 0, 0, "heading ", DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL }, { "h6", 0, 0, 0, 0, 0, 0, 0, "heading ", DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL }, { "head", 1, 1, 0, 0, 0, 0, 0, "document head ", DECL head_contents, NULL, DECL head_attrs, NULL, NULL }, { "hr", 0, 2, 2, 1, 0, 0, 0, "horizontal rule " , EMPTY, NULL, DECL html_attrs, DECL hr_depr, NULL }, { "html", 1, 1, 0, 0, 0, 0, 0, "document root element ", DECL html_content , NULL , DECL i18n_attrs, DECL version_attr, NULL }, { "i", 0, 3, 0, 0, 0, 0, 1, "italic text style", DECL html_inline, NULL, DECL html_attrs, NULL, NULL }, { "iframe", 0, 0, 0, 0, 0, 1, 2, "inline subwindow ", DECL html_flow, NULL, NULL, DECL iframe_attrs, NULL }, { "img", 0, 2, 2, 1, 0, 0, 1, "embedded image ", EMPTY, NULL, DECL img_attrs, DECL align_attr, DECL src_alt_attrs }, { "input", 0, 2, 2, 1, 0, 0, 1, "form control ", EMPTY, NULL, DECL input_attrs , DECL align_attr, NULL }, { "ins", 0, 0, 0, 0, 0, 0, 2, "inserted text", DECL html_flow, NULL, DECL edit_attrs, NULL, NULL }, { "isindex", 0, 2, 2, 1, 1, 1, 0, "single line prompt ", EMPTY, NULL, NULL, DECL prompt_attrs, NULL }, { "kbd", 0, 0, 0, 0, 0, 0, 1, "text to be entered by the user", DECL html_inline, NULL, DECL html_attrs, NULL, NULL }, { "label", 0, 0, 0, 0, 0, 0, 1, "form field label text ", DECL html_inline MODIFIER, NULL, DECL label_attrs , NULL, NULL }, { "legend", 0, 0, 0, 0, 0, 0, 0, "fieldset legend ", DECL html_inline, NULL, DECL legend_attrs , DECL align_attr, NULL }, { "li", 0, 1, 1, 0, 0, 0, 0, "list item ", DECL html_flow, NULL, DECL html_attrs, NULL, NULL }, { "link", 0, 2, 2, 1, 0, 0, 0, "a media-independent link ", EMPTY, NULL, DECL link_attrs, DECL target_attr, NULL }, { "map", 0, 0, 0, 0, 0, 0, 2, "client-side image map ", DECL map_contents , NULL, DECL html_attrs , NULL, DECL name_attr }, { "menu", 0, 0, 0, 0, 1, 1, 0, "menu list ", DECL blockli_elt , NULL, NULL, DECL compact_attrs, NULL }, { "meta", 0, 2, 2, 1, 0, 0, 0, "generic metainformation ", EMPTY, NULL, DECL meta_attrs , NULL , DECL content_attr }, { "noframes", 0, 0, 0, 0, 0, 2, 0, "alternate content container for non frame-based rendering ", DECL noframes_content, "body" , DECL html_attrs, NULL, NULL }, { "noscript", 0, 0, 0, 0, 0, 0, 0, "alternate content container for non script-based rendering ", DECL html_flow, "div", DECL html_attrs, NULL, NULL }, { "object", 0, 0, 0, 0, 0, 0, 2, "generic embedded object ", DECL object_contents , "div" , DECL object_attrs, DECL object_depr, NULL }, { "ol", 0, 0, 0, 0, 0, 0, 0, "ordered list ", DECL li_elt , "li" , DECL html_attrs, DECL ol_attrs, NULL }, { "optgroup", 0, 0, 0, 0, 0, 0, 0, "option group ", DECL option_elt , "option", DECL optgroup_attrs, NULL, DECL label_attr }, { "option", 0, 1, 0, 0, 0, 0, 0, "selectable choice " , DECL html_pcdata, NULL, DECL option_attrs, NULL, NULL }, { "p", 0, 1, 0, 0, 0, 0, 0, "paragraph ", DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL }, { "param", 0, 2, 2, 1, 0, 0, 0, "named property value ", EMPTY, NULL, DECL param_attrs, NULL, DECL name_attr }, { "pre", 0, 0, 0, 0, 0, 0, 0, "preformatted text ", DECL pre_content, NULL, DECL html_attrs, DECL width_attr, NULL }, { "q", 0, 0, 0, 0, 0, 0, 1, "short inline quotation ", DECL html_inline, NULL, DECL quote_attrs, NULL, NULL }, { "s", 0, 3, 0, 0, 1, 1, 1, "strike-through text style", DECL html_inline, NULL, NULL, DECL html_attrs, NULL }, { "samp", 0, 0, 0, 0, 0, 0, 1, "sample program output, scripts, etc.", DECL html_inline, NULL, DECL html_attrs, NULL, NULL }, { "script", 0, 0, 0, 0, 0, 0, 2, "script statements ", DECL html_cdata, NULL, DECL script_attrs, DECL language_attr, DECL type_attr }, { "select", 0, 0, 0, 0, 0, 0, 1, "option selector ", DECL select_content, NULL, DECL select_attrs, NULL, NULL }, { "small", 0, 3, 0, 0, 0, 0, 1, "small text style", DECL html_inline, NULL, DECL html_attrs, NULL, NULL }, { "span", 0, 0, 0, 0, 0, 0, 1, "generic language/style container ", DECL html_inline, NULL, DECL html_attrs, NULL, NULL }, { "strike", 0, 3, 0, 0, 1, 1, 1, "strike-through text", DECL html_inline, NULL, NULL, DECL html_attrs, NULL }, { "strong", 0, 3, 0, 0, 0, 0, 1, "strong emphasis", DECL html_inline, NULL, DECL html_attrs, NULL, NULL }, { "style", 0, 0, 0, 0, 0, 0, 0, "style info ", DECL html_cdata, NULL, DECL style_attrs, NULL, DECL type_attr }, { "sub", 0, 3, 0, 0, 0, 0, 1, "subscript", DECL html_inline, NULL, DECL html_attrs, NULL, NULL }, { "sup", 0, 3, 0, 0, 0, 0, 1, "superscript ", DECL html_inline, NULL, DECL html_attrs, NULL, NULL }, { "table", 0, 0, 0, 0, 0, 0, 0, "", DECL table_contents , "tr" , DECL table_attrs , DECL table_depr, NULL }, { "tbody", 1, 0, 0, 0, 0, 0, 0, "table body ", DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL }, { "td", 0, 0, 0, 0, 0, 0, 0, "table data cell", DECL html_flow, NULL, DECL th_td_attr, DECL th_td_depr, NULL }, { "textarea", 0, 0, 0, 0, 0, 0, 1, "multi-line text field ", DECL html_pcdata, NULL, DECL textarea_attrs, NULL, DECL rows_cols_attr }, { "tfoot", 0, 1, 0, 0, 0, 0, 0, "table footer ", DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL }, { "th", 0, 1, 0, 0, 0, 0, 0, "table header cell", DECL html_flow, NULL, DECL th_td_attr, DECL th_td_depr, NULL }, { "thead", 0, 1, 0, 0, 0, 0, 0, "table header ", DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL }, { "title", 0, 0, 0, 0, 0, 0, 0, "document title ", DECL html_pcdata, NULL, DECL i18n_attrs, NULL, NULL }, { "tr", 0, 0, 0, 0, 0, 0, 0, "table row ", DECL tr_contents , "td" , DECL talign_attrs, DECL bgcolor_attr, NULL }, { "tt", 0, 3, 0, 0, 0, 0, 1, "teletype or monospaced text style", DECL html_inline, NULL, DECL html_attrs, NULL, NULL }, { "u", 0, 3, 0, 0, 1, 1, 1, "underlined text style", DECL html_inline, NULL, NULL, DECL html_attrs, NULL }, { "ul", 0, 0, 0, 0, 0, 0, 0, "unordered list ", DECL li_elt , "li" , DECL html_attrs, DECL ul_depr, NULL }, { "var", 0, 0, 0, 0, 0, 0, 1, "instance of a variable or program argument", DECL html_inline, NULL, DECL html_attrs, NULL, NULL } }; typedef struct { const char *oldTag; const char *newTag; } htmlStartCloseEntry; /* * start tags that imply the end of current element */ static const htmlStartCloseEntry htmlStartClose[] = { { "a", "a" }, { "a", "fieldset" }, { "a", "table" }, { "a", "td" }, { "a", "th" }, { "address", "dd" }, { "address", "dl" }, { "address", "dt" }, { "address", "form" }, { "address", "li" }, { "address", "ul" }, { "b", "center" }, { "b", "p" }, { "b", "td" }, { "b", "th" }, { "big", "p" }, { "caption", "col" }, { "caption", "colgroup" }, { "caption", "tbody" }, { "caption", "tfoot" }, { "caption", "thead" }, { "caption", "tr" }, { "col", "col" }, { "col", "colgroup" }, { "col", "tbody" }, { "col", "tfoot" }, { "col", "thead" }, { "col", "tr" }, { "colgroup", "colgroup" }, { "colgroup", "tbody" }, { "colgroup", "tfoot" }, { "colgroup", "thead" }, { "colgroup", "tr" }, { "dd", "dt" }, { "dir", "dd" }, { "dir", "dl" }, { "dir", "dt" }, { "dir", "form" }, { "dir", "ul" }, { "dl", "form" }, { "dl", "li" }, { "dt", "dd" }, { "dt", "dl" }, { "font", "center" }, { "font", "td" }, { "font", "th" }, { "form", "form" }, { "h1", "fieldset" }, { "h1", "form" }, { "h1", "li" }, { "h1", "p" }, { "h1", "table" }, { "h2", "fieldset" }, { "h2", "form" }, { "h2", "li" }, { "h2", "p" }, { "h2", "table" }, { "h3", "fieldset" }, { "h3", "form" }, { "h3", "li" }, { "h3", "p" }, { "h3", "table" }, { "h4", "fieldset" }, { "h4", "form" }, { "h4", "li" }, { "h4", "p" }, { "h4", "table" }, { "h5", "fieldset" }, { "h5", "form" }, { "h5", "li" }, { "h5", "p" }, { "h5", "table" }, { "h6", "fieldset" }, { "h6", "form" }, { "h6", "li" }, { "h6", "p" }, { "h6", "table" }, { "head", "a" }, { "head", "abbr" }, { "head", "acronym" }, { "head", "address" }, { "head", "b" }, { "head", "bdo" }, { "head", "big" }, { "head", "blockquote" }, { "head", "body" }, { "head", "br" }, { "head", "center" }, { "head", "cite" }, { "head", "code" }, { "head", "dd" }, { "head", "dfn" }, { "head", "dir" }, { "head", "div" }, { "head", "dl" }, { "head", "dt" }, { "head", "em" }, { "head", "fieldset" }, { "head", "font" }, { "head", "form" }, { "head", "frameset" }, { "head", "h1" }, { "head", "h2" }, { "head", "h3" }, { "head", "h4" }, { "head", "h5" }, { "head", "h6" }, { "head", "hr" }, { "head", "i" }, { "head", "iframe" }, { "head", "img" }, { "head", "kbd" }, { "head", "li" }, { "head", "listing" }, { "head", "map" }, { "head", "menu" }, { "head", "ol" }, { "head", "p" }, { "head", "pre" }, { "head", "q" }, { "head", "s" }, { "head", "samp" }, { "head", "small" }, { "head", "span" }, { "head", "strike" }, { "head", "strong" }, { "head", "sub" }, { "head", "sup" }, { "head", "table" }, { "head", "tt" }, { "head", "u" }, { "head", "ul" }, { "head", "var" }, { "head", "xmp" }, { "hr", "form" }, { "i", "center" }, { "i", "p" }, { "i", "td" }, { "i", "th" }, { "legend", "fieldset" }, { "li", "li" }, { "link", "body" }, { "link", "frameset" }, { "listing", "dd" }, { "listing", "dl" }, { "listing", "dt" }, { "listing", "fieldset" }, { "listing", "form" }, { "listing", "li" }, { "listing", "table" }, { "listing", "ul" }, { "menu", "dd" }, { "menu", "dl" }, { "menu", "dt" }, { "menu", "form" }, { "menu", "ul" }, { "ol", "form" }, { "ol", "ul" }, { "option", "optgroup" }, { "option", "option" }, { "p", "address" }, { "p", "blockquote" }, { "p", "body" }, { "p", "caption" }, { "p", "center" }, { "p", "col" }, { "p", "colgroup" }, { "p", "dd" }, { "p", "dir" }, { "p", "div" }, { "p", "dl" }, { "p", "dt" }, { "p", "fieldset" }, { "p", "form" }, { "p", "frameset" }, { "p", "h1" }, { "p", "h2" }, { "p", "h3" }, { "p", "h4" }, { "p", "h5" }, { "p", "h6" }, { "p", "head" }, { "p", "hr" }, { "p", "li" }, { "p", "listing" }, { "p", "menu" }, { "p", "ol" }, { "p", "p" }, { "p", "pre" }, { "p", "table" }, { "p", "tbody" }, { "p", "td" }, { "p", "tfoot" }, { "p", "th" }, { "p", "title" }, { "p", "tr" }, { "p", "ul" }, { "p", "xmp" }, { "pre", "dd" }, { "pre", "dl" }, { "pre", "dt" }, { "pre", "fieldset" }, { "pre", "form" }, { "pre", "li" }, { "pre", "table" }, { "pre", "ul" }, { "s", "p" }, { "script", "noscript" }, { "small", "p" }, { "span", "td" }, { "span", "th" }, { "strike", "p" }, { "style", "body" }, { "style", "frameset" }, { "tbody", "tbody" }, { "tbody", "tfoot" }, { "td", "tbody" }, { "td", "td" }, { "td", "tfoot" }, { "td", "th" }, { "td", "tr" }, { "tfoot", "tbody" }, { "th", "tbody" }, { "th", "td" }, { "th", "tfoot" }, { "th", "th" }, { "th", "tr" }, { "thead", "tbody" }, { "thead", "tfoot" }, { "title", "body" }, { "title", "frameset" }, { "tr", "tbody" }, { "tr", "tfoot" }, { "tr", "tr" }, { "tt", "p" }, { "u", "p" }, { "u", "td" }, { "u", "th" }, { "ul", "address" }, { "ul", "form" }, { "ul", "menu" }, { "ul", "ol" }, { "ul", "pre" }, { "xmp", "dd" }, { "xmp", "dl" }, { "xmp", "dt" }, { "xmp", "fieldset" }, { "xmp", "form" }, { "xmp", "li" }, { "xmp", "table" }, { "xmp", "ul" } }; /* * The list of HTML elements which are supposed not to have * CDATA content and where a p element will be implied * * TODO: extend that list by reading the HTML SGML DTD on * implied paragraph */ static const char *const htmlNoContentElements[] = { "html", "head", NULL }; /* * The list of HTML attributes which are of content %Script; * NOTE: when adding ones, check htmlIsScriptAttribute() since * it assumes the name starts with 'on' */ static const char *const htmlScriptAttributes[] = { "onclick", "ondblclick", "onmousedown", "onmouseup", "onmouseover", "onmousemove", "onmouseout", "onkeypress", "onkeydown", "onkeyup", "onload", "onunload", "onfocus", "onblur", "onsubmit", "onreset", "onchange", "onselect" }; /* * This table is used by the htmlparser to know what to do with * broken html pages. By assigning different priorities to different * elements the parser can decide how to handle extra endtags. * Endtags are only allowed to close elements with lower or equal * priority. */ typedef struct { const char *name; int priority; } elementPriority; static const elementPriority htmlEndPriority[] = { {"div", 150}, {"td", 160}, {"th", 160}, {"tr", 170}, {"thead", 180}, {"tbody", 180}, {"tfoot", 180}, {"table", 190}, {"head", 200}, {"body", 200}, {"html", 220}, {NULL, 100} /* Default priority */ }; /************************************************************************ * * * functions to handle HTML specific data * * * ************************************************************************/ /** * htmlInitAutoClose: * * This is a no-op now. */ void htmlInitAutoClose(void) { } static int htmlCompareTags(const void *key, const void *member) { const xmlChar *tag = (const xmlChar *) key; const htmlElemDesc *desc = (const htmlElemDesc *) member; return(xmlStrcasecmp(tag, BAD_CAST desc->name)); } /** * htmlTagLookup: * @tag: The tag name in lowercase * * Lookup the HTML tag in the ElementTable * * Returns the related htmlElemDescPtr or NULL if not found. */ const htmlElemDesc * htmlTagLookup(const xmlChar *tag) { if (tag == NULL) return(NULL); return((const htmlElemDesc *) bsearch(tag, html40ElementTable, sizeof(html40ElementTable) / sizeof(htmlElemDesc), sizeof(htmlElemDesc), htmlCompareTags)); } /** * htmlGetEndPriority: * @name: The name of the element to look up the priority for. * * Return value: The "endtag" priority. **/ static int htmlGetEndPriority (const xmlChar *name) { int i = 0; while ((htmlEndPriority[i].name != NULL) && (!xmlStrEqual((const xmlChar *)htmlEndPriority[i].name, name))) i++; return(htmlEndPriority[i].priority); } static int htmlCompareStartClose(const void *vkey, const void *member) { const htmlStartCloseEntry *key = (const htmlStartCloseEntry *) vkey; const htmlStartCloseEntry *entry = (const htmlStartCloseEntry *) member; int ret; ret = strcmp(key->oldTag, entry->oldTag); if (ret == 0) ret = strcmp(key->newTag, entry->newTag); return(ret); } /** * htmlCheckAutoClose: * @newtag: The new tag name * @oldtag: The old tag name * * Checks whether the new tag is one of the registered valid tags for * closing old. * * Returns 0 if no, 1 if yes. */ static int htmlCheckAutoClose(const xmlChar * newtag, const xmlChar * oldtag) { htmlStartCloseEntry key; void *res; key.oldTag = (const char *) oldtag; key.newTag = (const char *) newtag; res = bsearch(&key, htmlStartClose, sizeof(htmlStartClose) / sizeof(htmlStartCloseEntry), sizeof(htmlStartCloseEntry), htmlCompareStartClose); return(res != NULL); } /** * htmlAutoCloseOnClose: * @ctxt: an HTML parser context * @newtag: The new tag name * @force: force the tag closure * * The HTML DTD allows an ending tag to implicitly close other tags. */ static void htmlAutoCloseOnClose(htmlParserCtxtPtr ctxt, const xmlChar * newtag) { const htmlElemDesc *info; int i, priority; priority = htmlGetEndPriority(newtag); for (i = (ctxt->nameNr - 1); i >= 0; i--) { if (xmlStrEqual(newtag, ctxt->nameTab[i])) break; /* * A misplaced endtag can only close elements with lower * or equal priority, so if we find an element with higher * priority before we find an element with * matching name, we just ignore this endtag */ if (htmlGetEndPriority(ctxt->nameTab[i]) > priority) return; } if (i < 0) return; while (!xmlStrEqual(newtag, ctxt->name)) { info = htmlTagLookup(ctxt->name); if ((info != NULL) && (info->endTag == 3)) { htmlParseErr(ctxt, XML_ERR_TAG_NAME_MISMATCH, "Opening and ending tag mismatch: %s and %s\n", newtag, ctxt->name); } if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) ctxt->sax->endElement(ctxt->userData, ctxt->name); htmlnamePop(ctxt); } } /** * htmlAutoCloseOnEnd: * @ctxt: an HTML parser context * * Close all remaining tags at the end of the stream */ static void htmlAutoCloseOnEnd(htmlParserCtxtPtr ctxt) { int i; if (ctxt->nameNr == 0) return; for (i = (ctxt->nameNr - 1); i >= 0; i--) { if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) ctxt->sax->endElement(ctxt->userData, ctxt->name); htmlnamePop(ctxt); } } /** * htmlAutoClose: * @ctxt: an HTML parser context * @newtag: The new tag name or NULL * * The HTML DTD allows a tag to implicitly close other tags. * The list is kept in htmlStartClose array. This function is * called when a new tag has been detected and generates the * appropriates closes if possible/needed. * If newtag is NULL this mean we are at the end of the resource * and we should check */ static void htmlAutoClose(htmlParserCtxtPtr ctxt, const xmlChar * newtag) { while ((newtag != NULL) && (ctxt->name != NULL) && (htmlCheckAutoClose(newtag, ctxt->name))) { if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) ctxt->sax->endElement(ctxt->userData, ctxt->name); htmlnamePop(ctxt); } if (newtag == NULL) { htmlAutoCloseOnEnd(ctxt); return; } while ((newtag == NULL) && (ctxt->name != NULL) && ((xmlStrEqual(ctxt->name, BAD_CAST "head")) || (xmlStrEqual(ctxt->name, BAD_CAST "body")) || (xmlStrEqual(ctxt->name, BAD_CAST "html")))) { if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) ctxt->sax->endElement(ctxt->userData, ctxt->name); htmlnamePop(ctxt); } } /** * htmlAutoCloseTag: * @doc: the HTML document * @name: The tag name * @elem: the HTML element * * The HTML DTD allows a tag to implicitly close other tags. * The list is kept in htmlStartClose array. This function checks * if the element or one of it's children would autoclose the * given tag. * * Returns 1 if autoclose, 0 otherwise */ int htmlAutoCloseTag(htmlDocPtr doc, const xmlChar *name, htmlNodePtr elem) { htmlNodePtr child; if (elem == NULL) return(1); if (xmlStrEqual(name, elem->name)) return(0); if (htmlCheckAutoClose(elem->name, name)) return(1); child = elem->children; while (child != NULL) { if (htmlAutoCloseTag(doc, name, child)) return(1); child = child->next; } return(0); } /** * htmlIsAutoClosed: * @doc: the HTML document * @elem: the HTML element * * The HTML DTD allows a tag to implicitly close other tags. * The list is kept in htmlStartClose array. This function checks * if a tag is autoclosed by one of it's child * * Returns 1 if autoclosed, 0 otherwise */ int htmlIsAutoClosed(htmlDocPtr doc, htmlNodePtr elem) { htmlNodePtr child; if (elem == NULL) return(1); child = elem->children; while (child != NULL) { if (htmlAutoCloseTag(doc, elem->name, child)) return(1); child = child->next; } return(0); } /** * htmlCheckImplied: * @ctxt: an HTML parser context * @newtag: The new tag name * * The HTML DTD allows a tag to exists only implicitly * called when a new tag has been detected and generates the * appropriates implicit tags if missing */ static void htmlCheckImplied(htmlParserCtxtPtr ctxt, const xmlChar *newtag) { int i; if (ctxt->options & HTML_PARSE_NOIMPLIED) return; if (!htmlOmittedDefaultValue) return; if (xmlStrEqual(newtag, BAD_CAST"html")) return; if (ctxt->nameNr <= 0) { htmlnamePush(ctxt, BAD_CAST"html"); if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL)) ctxt->sax->startElement(ctxt->userData, BAD_CAST"html", NULL); } if ((xmlStrEqual(newtag, BAD_CAST"body")) || (xmlStrEqual(newtag, BAD_CAST"head"))) return; if ((ctxt->nameNr <= 1) && ((xmlStrEqual(newtag, BAD_CAST"script")) || (xmlStrEqual(newtag, BAD_CAST"style")) || (xmlStrEqual(newtag, BAD_CAST"meta")) || (xmlStrEqual(newtag, BAD_CAST"link")) || (xmlStrEqual(newtag, BAD_CAST"title")) || (xmlStrEqual(newtag, BAD_CAST"base")))) { if (ctxt->html >= 3) { /* we already saw or generated an before */ return; } /* * dropped OBJECT ... i you put it first BODY will be * assumed ! */ htmlnamePush(ctxt, BAD_CAST"head"); if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL)) ctxt->sax->startElement(ctxt->userData, BAD_CAST"head", NULL); } else if ((!xmlStrEqual(newtag, BAD_CAST"noframes")) && (!xmlStrEqual(newtag, BAD_CAST"frame")) && (!xmlStrEqual(newtag, BAD_CAST"frameset"))) { if (ctxt->html >= 10) { /* we already saw or generated a before */ return; } for (i = 0;i < ctxt->nameNr;i++) { if (xmlStrEqual(ctxt->nameTab[i], BAD_CAST"body")) { return; } if (xmlStrEqual(ctxt->nameTab[i], BAD_CAST"head")) { return; } } htmlnamePush(ctxt, BAD_CAST"body"); if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL)) ctxt->sax->startElement(ctxt->userData, BAD_CAST"body", NULL); } } /** * htmlCheckParagraph * @ctxt: an HTML parser context * * Check whether a p element need to be implied before inserting * characters in the current element. * * Returns 1 if a paragraph has been inserted, 0 if not and -1 * in case of error. */ static int htmlCheckParagraph(htmlParserCtxtPtr ctxt) { const xmlChar *tag; int i; if (ctxt == NULL) return(-1); tag = ctxt->name; if (tag == NULL) { htmlAutoClose(ctxt, BAD_CAST"p"); htmlCheckImplied(ctxt, BAD_CAST"p"); htmlnamePush(ctxt, BAD_CAST"p"); if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL)) ctxt->sax->startElement(ctxt->userData, BAD_CAST"p", NULL); return(1); } if (!htmlOmittedDefaultValue) return(0); for (i = 0; htmlNoContentElements[i] != NULL; i++) { if (xmlStrEqual(tag, BAD_CAST htmlNoContentElements[i])) { htmlAutoClose(ctxt, BAD_CAST"p"); htmlCheckImplied(ctxt, BAD_CAST"p"); htmlnamePush(ctxt, BAD_CAST"p"); if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL)) ctxt->sax->startElement(ctxt->userData, BAD_CAST"p", NULL); return(1); } } return(0); } /** * htmlIsScriptAttribute: * @name: an attribute name * * Check if an attribute is of content type Script * * Returns 1 is the attribute is a script 0 otherwise */ int htmlIsScriptAttribute(const xmlChar *name) { unsigned int i; if (name == NULL) return(0); /* * all script attributes start with 'on' */ if ((name[0] != 'o') || (name[1] != 'n')) return(0); for (i = 0; i < sizeof(htmlScriptAttributes)/sizeof(htmlScriptAttributes[0]); i++) { if (xmlStrEqual(name, (const xmlChar *) htmlScriptAttributes[i])) return(1); } return(0); } /************************************************************************ * * * The list of HTML predefined entities * * * ************************************************************************/ static const htmlEntityDesc html40EntitiesTable[] = { /* * the 4 absolute ones, plus apostrophe. */ { 34, "quot", "quotation mark = APL quote, U+0022 ISOnum" }, { 38, "amp", "ampersand, U+0026 ISOnum" }, { 39, "apos", "single quote" }, { 60, "lt", "less-than sign, U+003C ISOnum" }, { 62, "gt", "greater-than sign, U+003E ISOnum" }, /* * A bunch still in the 128-255 range * Replacing them depend really on the charset used. */ { 160, "nbsp", "no-break space = non-breaking space, U+00A0 ISOnum" }, { 161, "iexcl","inverted exclamation mark, U+00A1 ISOnum" }, { 162, "cent", "cent sign, U+00A2 ISOnum" }, { 163, "pound","pound sign, U+00A3 ISOnum" }, { 164, "curren","currency sign, U+00A4 ISOnum" }, { 165, "yen", "yen sign = yuan sign, U+00A5 ISOnum" }, { 166, "brvbar","broken bar = broken vertical bar, U+00A6 ISOnum" }, { 167, "sect", "section sign, U+00A7 ISOnum" }, { 168, "uml", "diaeresis = spacing diaeresis, U+00A8 ISOdia" }, { 169, "copy", "copyright sign, U+00A9 ISOnum" }, { 170, "ordf", "feminine ordinal indicator, U+00AA ISOnum" }, { 171, "laquo","left-pointing double angle quotation mark = left pointing guillemet, U+00AB ISOnum" }, { 172, "not", "not sign, U+00AC ISOnum" }, { 173, "shy", "soft hyphen = discretionary hyphen, U+00AD ISOnum" }, { 174, "reg", "registered sign = registered trade mark sign, U+00AE ISOnum" }, { 175, "macr", "macron = spacing macron = overline = APL overbar, U+00AF ISOdia" }, { 176, "deg", "degree sign, U+00B0 ISOnum" }, { 177, "plusmn","plus-minus sign = plus-or-minus sign, U+00B1 ISOnum" }, { 178, "sup2", "superscript two = superscript digit two = squared, U+00B2 ISOnum" }, { 179, "sup3", "superscript three = superscript digit three = cubed, U+00B3 ISOnum" }, { 180, "acute","acute accent = spacing acute, U+00B4 ISOdia" }, { 181, "micro","micro sign, U+00B5 ISOnum" }, { 182, "para", "pilcrow sign = paragraph sign, U+00B6 ISOnum" }, { 183, "middot","middle dot = Georgian comma Greek middle dot, U+00B7 ISOnum" }, { 184, "cedil","cedilla = spacing cedilla, U+00B8 ISOdia" }, { 185, "sup1", "superscript one = superscript digit one, U+00B9 ISOnum" }, { 186, "ordm", "masculine ordinal indicator, U+00BA ISOnum" }, { 187, "raquo","right-pointing double angle quotation mark right pointing guillemet, U+00BB ISOnum" }, { 188, "frac14","vulgar fraction one quarter = fraction one quarter, U+00BC ISOnum" }, { 189, "frac12","vulgar fraction one half = fraction one half, U+00BD ISOnum" }, { 190, "frac34","vulgar fraction three quarters = fraction three quarters, U+00BE ISOnum" }, { 191, "iquest","inverted question mark = turned question mark, U+00BF ISOnum" }, { 192, "Agrave","latin capital letter A with grave = latin capital letter A grave, U+00C0 ISOlat1" }, { 193, "Aacute","latin capital letter A with acute, U+00C1 ISOlat1" }, { 194, "Acirc","latin capital letter A with circumflex, U+00C2 ISOlat1" }, { 195, "Atilde","latin capital letter A with tilde, U+00C3 ISOlat1" }, { 196, "Auml", "latin capital letter A with diaeresis, U+00C4 ISOlat1" }, { 197, "Aring","latin capital letter A with ring above = latin capital letter A ring, U+00C5 ISOlat1" }, { 198, "AElig","latin capital letter AE = latin capital ligature AE, U+00C6 ISOlat1" }, { 199, "Ccedil","latin capital letter C with cedilla, U+00C7 ISOlat1" }, { 200, "Egrave","latin capital letter E with grave, U+00C8 ISOlat1" }, { 201, "Eacute","latin capital letter E with acute, U+00C9 ISOlat1" }, { 202, "Ecirc","latin capital letter E with circumflex, U+00CA ISOlat1" }, { 203, "Euml", "latin capital letter E with diaeresis, U+00CB ISOlat1" }, { 204, "Igrave","latin capital letter I with grave, U+00CC ISOlat1" }, { 205, "Iacute","latin capital letter I with acute, U+00CD ISOlat1" }, { 206, "Icirc","latin capital letter I with circumflex, U+00CE ISOlat1" }, { 207, "Iuml", "latin capital letter I with diaeresis, U+00CF ISOlat1" }, { 208, "ETH", "latin capital letter ETH, U+00D0 ISOlat1" }, { 209, "Ntilde","latin capital letter N with tilde, U+00D1 ISOlat1" }, { 210, "Ograve","latin capital letter O with grave, U+00D2 ISOlat1" }, { 211, "Oacute","latin capital letter O with acute, U+00D3 ISOlat1" }, { 212, "Ocirc","latin capital letter O with circumflex, U+00D4 ISOlat1" }, { 213, "Otilde","latin capital letter O with tilde, U+00D5 ISOlat1" }, { 214, "Ouml", "latin capital letter O with diaeresis, U+00D6 ISOlat1" }, { 215, "times","multiplication sign, U+00D7 ISOnum" }, { 216, "Oslash","latin capital letter O with stroke latin capital letter O slash, U+00D8 ISOlat1" }, { 217, "Ugrave","latin capital letter U with grave, U+00D9 ISOlat1" }, { 218, "Uacute","latin capital letter U with acute, U+00DA ISOlat1" }, { 219, "Ucirc","latin capital letter U with circumflex, U+00DB ISOlat1" }, { 220, "Uuml", "latin capital letter U with diaeresis, U+00DC ISOlat1" }, { 221, "Yacute","latin capital letter Y with acute, U+00DD ISOlat1" }, { 222, "THORN","latin capital letter THORN, U+00DE ISOlat1" }, { 223, "szlig","latin small letter sharp s = ess-zed, U+00DF ISOlat1" }, { 224, "agrave","latin small letter a with grave = latin small letter a grave, U+00E0 ISOlat1" }, { 225, "aacute","latin small letter a with acute, U+00E1 ISOlat1" }, { 226, "acirc","latin small letter a with circumflex, U+00E2 ISOlat1" }, { 227, "atilde","latin small letter a with tilde, U+00E3 ISOlat1" }, { 228, "auml", "latin small letter a with diaeresis, U+00E4 ISOlat1" }, { 229, "aring","latin small letter a with ring above = latin small letter a ring, U+00E5 ISOlat1" }, { 230, "aelig","latin small letter ae = latin small ligature ae, U+00E6 ISOlat1" }, { 231, "ccedil","latin small letter c with cedilla, U+00E7 ISOlat1" }, { 232, "egrave","latin small letter e with grave, U+00E8 ISOlat1" }, { 233, "eacute","latin small letter e with acute, U+00E9 ISOlat1" }, { 234, "ecirc","latin small letter e with circumflex, U+00EA ISOlat1" }, { 235, "euml", "latin small letter e with diaeresis, U+00EB ISOlat1" }, { 236, "igrave","latin small letter i with grave, U+00EC ISOlat1" }, { 237, "iacute","latin small letter i with acute, U+00ED ISOlat1" }, { 238, "icirc","latin small letter i with circumflex, U+00EE ISOlat1" }, { 239, "iuml", "latin small letter i with diaeresis, U+00EF ISOlat1" }, { 240, "eth", "latin small letter eth, U+00F0 ISOlat1" }, { 241, "ntilde","latin small letter n with tilde, U+00F1 ISOlat1" }, { 242, "ograve","latin small letter o with grave, U+00F2 ISOlat1" }, { 243, "oacute","latin small letter o with acute, U+00F3 ISOlat1" }, { 244, "ocirc","latin small letter o with circumflex, U+00F4 ISOlat1" }, { 245, "otilde","latin small letter o with tilde, U+00F5 ISOlat1" }, { 246, "ouml", "latin small letter o with diaeresis, U+00F6 ISOlat1" }, { 247, "divide","division sign, U+00F7 ISOnum" }, { 248, "oslash","latin small letter o with stroke, = latin small letter o slash, U+00F8 ISOlat1" }, { 249, "ugrave","latin small letter u with grave, U+00F9 ISOlat1" }, { 250, "uacute","latin small letter u with acute, U+00FA ISOlat1" }, { 251, "ucirc","latin small letter u with circumflex, U+00FB ISOlat1" }, { 252, "uuml", "latin small letter u with diaeresis, U+00FC ISOlat1" }, { 253, "yacute","latin small letter y with acute, U+00FD ISOlat1" }, { 254, "thorn","latin small letter thorn with, U+00FE ISOlat1" }, { 255, "yuml", "latin small letter y with diaeresis, U+00FF ISOlat1" }, { 338, "OElig","latin capital ligature OE, U+0152 ISOlat2" }, { 339, "oelig","latin small ligature oe, U+0153 ISOlat2" }, { 352, "Scaron","latin capital letter S with caron, U+0160 ISOlat2" }, { 353, "scaron","latin small letter s with caron, U+0161 ISOlat2" }, { 376, "Yuml", "latin capital letter Y with diaeresis, U+0178 ISOlat2" }, /* * Anything below should really be kept as entities references */ { 402, "fnof", "latin small f with hook = function = florin, U+0192 ISOtech" }, { 710, "circ", "modifier letter circumflex accent, U+02C6 ISOpub" }, { 732, "tilde","small tilde, U+02DC ISOdia" }, { 913, "Alpha","greek capital letter alpha, U+0391" }, { 914, "Beta", "greek capital letter beta, U+0392" }, { 915, "Gamma","greek capital letter gamma, U+0393 ISOgrk3" }, { 916, "Delta","greek capital letter delta, U+0394 ISOgrk3" }, { 917, "Epsilon","greek capital letter epsilon, U+0395" }, { 918, "Zeta", "greek capital letter zeta, U+0396" }, { 919, "Eta", "greek capital letter eta, U+0397" }, { 920, "Theta","greek capital letter theta, U+0398 ISOgrk3" }, { 921, "Iota", "greek capital letter iota, U+0399" }, { 922, "Kappa","greek capital letter kappa, U+039A" }, { 923, "Lambda", "greek capital letter lambda, U+039B ISOgrk3" }, { 924, "Mu", "greek capital letter mu, U+039C" }, { 925, "Nu", "greek capital letter nu, U+039D" }, { 926, "Xi", "greek capital letter xi, U+039E ISOgrk3" }, { 927, "Omicron","greek capital letter omicron, U+039F" }, { 928, "Pi", "greek capital letter pi, U+03A0 ISOgrk3" }, { 929, "Rho", "greek capital letter rho, U+03A1" }, { 931, "Sigma","greek capital letter sigma, U+03A3 ISOgrk3" }, { 932, "Tau", "greek capital letter tau, U+03A4" }, { 933, "Upsilon","greek capital letter upsilon, U+03A5 ISOgrk3" }, { 934, "Phi", "greek capital letter phi, U+03A6 ISOgrk3" }, { 935, "Chi", "greek capital letter chi, U+03A7" }, { 936, "Psi", "greek capital letter psi, U+03A8 ISOgrk3" }, { 937, "Omega","greek capital letter omega, U+03A9 ISOgrk3" }, { 945, "alpha","greek small letter alpha, U+03B1 ISOgrk3" }, { 946, "beta", "greek small letter beta, U+03B2 ISOgrk3" }, { 947, "gamma","greek small letter gamma, U+03B3 ISOgrk3" }, { 948, "delta","greek small letter delta, U+03B4 ISOgrk3" }, { 949, "epsilon","greek small letter epsilon, U+03B5 ISOgrk3" }, { 950, "zeta", "greek small letter zeta, U+03B6 ISOgrk3" }, { 951, "eta", "greek small letter eta, U+03B7 ISOgrk3" }, { 952, "theta","greek small letter theta, U+03B8 ISOgrk3" }, { 953, "iota", "greek small letter iota, U+03B9 ISOgrk3" }, { 954, "kappa","greek small letter kappa, U+03BA ISOgrk3" }, { 955, "lambda","greek small letter lambda, U+03BB ISOgrk3" }, { 956, "mu", "greek small letter mu, U+03BC ISOgrk3" }, { 957, "nu", "greek small letter nu, U+03BD ISOgrk3" }, { 958, "xi", "greek small letter xi, U+03BE ISOgrk3" }, { 959, "omicron","greek small letter omicron, U+03BF NEW" }, { 960, "pi", "greek small letter pi, U+03C0 ISOgrk3" }, { 961, "rho", "greek small letter rho, U+03C1 ISOgrk3" }, { 962, "sigmaf","greek small letter final sigma, U+03C2 ISOgrk3" }, { 963, "sigma","greek small letter sigma, U+03C3 ISOgrk3" }, { 964, "tau", "greek small letter tau, U+03C4 ISOgrk3" }, { 965, "upsilon","greek small letter upsilon, U+03C5 ISOgrk3" }, { 966, "phi", "greek small letter phi, U+03C6 ISOgrk3" }, { 967, "chi", "greek small letter chi, U+03C7 ISOgrk3" }, { 968, "psi", "greek small letter psi, U+03C8 ISOgrk3" }, { 969, "omega","greek small letter omega, U+03C9 ISOgrk3" }, { 977, "thetasym","greek small letter theta symbol, U+03D1 NEW" }, { 978, "upsih","greek upsilon with hook symbol, U+03D2 NEW" }, { 982, "piv", "greek pi symbol, U+03D6 ISOgrk3" }, { 8194, "ensp", "en space, U+2002 ISOpub" }, { 8195, "emsp", "em space, U+2003 ISOpub" }, { 8201, "thinsp","thin space, U+2009 ISOpub" }, { 8204, "zwnj", "zero width non-joiner, U+200C NEW RFC 2070" }, { 8205, "zwj", "zero width joiner, U+200D NEW RFC 2070" }, { 8206, "lrm", "left-to-right mark, U+200E NEW RFC 2070" }, { 8207, "rlm", "right-to-left mark, U+200F NEW RFC 2070" }, { 8211, "ndash","en dash, U+2013 ISOpub" }, { 8212, "mdash","em dash, U+2014 ISOpub" }, { 8216, "lsquo","left single quotation mark, U+2018 ISOnum" }, { 8217, "rsquo","right single quotation mark, U+2019 ISOnum" }, { 8218, "sbquo","single low-9 quotation mark, U+201A NEW" }, { 8220, "ldquo","left double quotation mark, U+201C ISOnum" }, { 8221, "rdquo","right double quotation mark, U+201D ISOnum" }, { 8222, "bdquo","double low-9 quotation mark, U+201E NEW" }, { 8224, "dagger","dagger, U+2020 ISOpub" }, { 8225, "Dagger","double dagger, U+2021 ISOpub" }, { 8226, "bull", "bullet = black small circle, U+2022 ISOpub" }, { 8230, "hellip","horizontal ellipsis = three dot leader, U+2026 ISOpub" }, { 8240, "permil","per mille sign, U+2030 ISOtech" }, { 8242, "prime","prime = minutes = feet, U+2032 ISOtech" }, { 8243, "Prime","double prime = seconds = inches, U+2033 ISOtech" }, { 8249, "lsaquo","single left-pointing angle quotation mark, U+2039 ISO proposed" }, { 8250, "rsaquo","single right-pointing angle quotation mark, U+203A ISO proposed" }, { 8254, "oline","overline = spacing overscore, U+203E NEW" }, { 8260, "frasl","fraction slash, U+2044 NEW" }, { 8364, "euro", "euro sign, U+20AC NEW" }, { 8465, "image","blackletter capital I = imaginary part, U+2111 ISOamso" }, { 8472, "weierp","script capital P = power set = Weierstrass p, U+2118 ISOamso" }, { 8476, "real", "blackletter capital R = real part symbol, U+211C ISOamso" }, { 8482, "trade","trade mark sign, U+2122 ISOnum" }, { 8501, "alefsym","alef symbol = first transfinite cardinal, U+2135 NEW" }, { 8592, "larr", "leftwards arrow, U+2190 ISOnum" }, { 8593, "uarr", "upwards arrow, U+2191 ISOnum" }, { 8594, "rarr", "rightwards arrow, U+2192 ISOnum" }, { 8595, "darr", "downwards arrow, U+2193 ISOnum" }, { 8596, "harr", "left right arrow, U+2194 ISOamsa" }, { 8629, "crarr","downwards arrow with corner leftwards = carriage return, U+21B5 NEW" }, { 8656, "lArr", "leftwards double arrow, U+21D0 ISOtech" }, { 8657, "uArr", "upwards double arrow, U+21D1 ISOamsa" }, { 8658, "rArr", "rightwards double arrow, U+21D2 ISOtech" }, { 8659, "dArr", "downwards double arrow, U+21D3 ISOamsa" }, { 8660, "hArr", "left right double arrow, U+21D4 ISOamsa" }, { 8704, "forall","for all, U+2200 ISOtech" }, { 8706, "part", "partial differential, U+2202 ISOtech" }, { 8707, "exist","there exists, U+2203 ISOtech" }, { 8709, "empty","empty set = null set = diameter, U+2205 ISOamso" }, { 8711, "nabla","nabla = backward difference, U+2207 ISOtech" }, { 8712, "isin", "element of, U+2208 ISOtech" }, { 8713, "notin","not an element of, U+2209 ISOtech" }, { 8715, "ni", "contains as member, U+220B ISOtech" }, { 8719, "prod", "n-ary product = product sign, U+220F ISOamsb" }, { 8721, "sum", "n-ary summation, U+2211 ISOamsb" }, { 8722, "minus","minus sign, U+2212 ISOtech" }, { 8727, "lowast","asterisk operator, U+2217 ISOtech" }, { 8730, "radic","square root = radical sign, U+221A ISOtech" }, { 8733, "prop", "proportional to, U+221D ISOtech" }, { 8734, "infin","infinity, U+221E ISOtech" }, { 8736, "ang", "angle, U+2220 ISOamso" }, { 8743, "and", "logical and = wedge, U+2227 ISOtech" }, { 8744, "or", "logical or = vee, U+2228 ISOtech" }, { 8745, "cap", "intersection = cap, U+2229 ISOtech" }, { 8746, "cup", "union = cup, U+222A ISOtech" }, { 8747, "int", "integral, U+222B ISOtech" }, { 8756, "there4","therefore, U+2234 ISOtech" }, { 8764, "sim", "tilde operator = varies with = similar to, U+223C ISOtech" }, { 8773, "cong", "approximately equal to, U+2245 ISOtech" }, { 8776, "asymp","almost equal to = asymptotic to, U+2248 ISOamsr" }, { 8800, "ne", "not equal to, U+2260 ISOtech" }, { 8801, "equiv","identical to, U+2261 ISOtech" }, { 8804, "le", "less-than or equal to, U+2264 ISOtech" }, { 8805, "ge", "greater-than or equal to, U+2265 ISOtech" }, { 8834, "sub", "subset of, U+2282 ISOtech" }, { 8835, "sup", "superset of, U+2283 ISOtech" }, { 8836, "nsub", "not a subset of, U+2284 ISOamsn" }, { 8838, "sube", "subset of or equal to, U+2286 ISOtech" }, { 8839, "supe", "superset of or equal to, U+2287 ISOtech" }, { 8853, "oplus","circled plus = direct sum, U+2295 ISOamsb" }, { 8855, "otimes","circled times = vector product, U+2297 ISOamsb" }, { 8869, "perp", "up tack = orthogonal to = perpendicular, U+22A5 ISOtech" }, { 8901, "sdot", "dot operator, U+22C5 ISOamsb" }, { 8968, "lceil","left ceiling = apl upstile, U+2308 ISOamsc" }, { 8969, "rceil","right ceiling, U+2309 ISOamsc" }, { 8970, "lfloor","left floor = apl downstile, U+230A ISOamsc" }, { 8971, "rfloor","right floor, U+230B ISOamsc" }, { 9001, "lang", "left-pointing angle bracket = bra, U+2329 ISOtech" }, { 9002, "rang", "right-pointing angle bracket = ket, U+232A ISOtech" }, { 9674, "loz", "lozenge, U+25CA ISOpub" }, { 9824, "spades","black spade suit, U+2660 ISOpub" }, { 9827, "clubs","black club suit = shamrock, U+2663 ISOpub" }, { 9829, "hearts","black heart suit = valentine, U+2665 ISOpub" }, { 9830, "diams","black diamond suit, U+2666 ISOpub" }, }; /************************************************************************ * * * Commodity functions to handle entities * * * ************************************************************************/ /* * Macro used to grow the current buffer. */ #define growBuffer(buffer) { \ xmlChar *tmp; \ buffer##_size *= 2; \ tmp = (xmlChar *) xmlRealloc(buffer, buffer##_size * sizeof(xmlChar)); \ if (tmp == NULL) { \ htmlErrMemory(ctxt, "growing buffer\n"); \ xmlFree(buffer); \ return(NULL); \ } \ buffer = tmp; \ } /** * htmlEntityLookup: * @name: the entity name * * Lookup the given entity in EntitiesTable * * TODO: the linear scan is really ugly, an hash table is really needed. * * Returns the associated htmlEntityDescPtr if found, NULL otherwise. */ const htmlEntityDesc * htmlEntityLookup(const xmlChar *name) { unsigned int i; for (i = 0;i < (sizeof(html40EntitiesTable)/ sizeof(html40EntitiesTable[0]));i++) { if (xmlStrEqual(name, BAD_CAST html40EntitiesTable[i].name)) { return((htmlEntityDescPtr) &html40EntitiesTable[i]); } } return(NULL); } /** * htmlEntityValueLookup: * @value: the entity's unicode value * * Lookup the given entity in EntitiesTable * * TODO: the linear scan is really ugly, an hash table is really needed. * * Returns the associated htmlEntityDescPtr if found, NULL otherwise. */ const htmlEntityDesc * htmlEntityValueLookup(unsigned int value) { unsigned int i; for (i = 0;i < (sizeof(html40EntitiesTable)/ sizeof(html40EntitiesTable[0]));i++) { if (html40EntitiesTable[i].value >= value) { if (html40EntitiesTable[i].value > value) break; return((htmlEntityDescPtr) &html40EntitiesTable[i]); } } return(NULL); } /** * UTF8ToHtml: * @out: a pointer to an array of bytes to store the result * @outlen: the length of @out * @in: a pointer to an array of UTF-8 chars * @inlen: the length of @in * * Take a block of UTF-8 chars in and try to convert it to an ASCII * plus HTML entities block of chars out. * * Returns 0 if success, -2 if the transcoding fails, or -1 otherwise * The value of @inlen after return is the number of octets consumed * as the return value is positive, else unpredictable. * The value of @outlen after return is the number of octets consumed. */ int UTF8ToHtml(unsigned char* out, int *outlen, const unsigned char* in, int *inlen) { const unsigned char* processed = in; const unsigned char* outend; const unsigned char* outstart = out; const unsigned char* instart = in; const unsigned char* inend; unsigned int c, d; int trailing; if ((out == NULL) || (outlen == NULL) || (inlen == NULL)) return(-1); if (in == NULL) { /* * initialization nothing to do */ *outlen = 0; *inlen = 0; return(0); } inend = in + (*inlen); outend = out + (*outlen); while (in < inend) { d = *in++; if (d < 0x80) { c= d; trailing= 0; } else if (d < 0xC0) { /* trailing byte in leading position */ *outlen = out - outstart; *inlen = processed - instart; return(-2); } else if (d < 0xE0) { c= d & 0x1F; trailing= 1; } else if (d < 0xF0) { c= d & 0x0F; trailing= 2; } else if (d < 0xF8) { c= d & 0x07; trailing= 3; } else { /* no chance for this in Ascii */ *outlen = out - outstart; *inlen = processed - instart; return(-2); } if (inend - in < trailing) { break; } for ( ; trailing; trailing--) { if ((in >= inend) || (((d= *in++) & 0xC0) != 0x80)) break; c <<= 6; c |= d & 0x3F; } /* assertion: c is a single UTF-4 value */ if (c < 0x80) { if (out + 1 >= outend) break; *out++ = c; } else { int len; const htmlEntityDesc * ent; const char *cp; char nbuf[16]; /* * Try to lookup a predefined HTML entity for it */ ent = htmlEntityValueLookup(c); if (ent == NULL) { snprintf(nbuf, sizeof(nbuf), "#%u", c); cp = nbuf; } else cp = ent->name; len = strlen(cp); if (out + 2 + len >= outend) break; *out++ = '&'; memcpy(out, cp, len); out += len; *out++ = ';'; } processed = in; } *outlen = out - outstart; *inlen = processed - instart; return(0); } /** * htmlEncodeEntities: * @out: a pointer to an array of bytes to store the result * @outlen: the length of @out * @in: a pointer to an array of UTF-8 chars * @inlen: the length of @in * @quoteChar: the quote character to escape (' or ") or zero. * * Take a block of UTF-8 chars in and try to convert it to an ASCII * plus HTML entities block of chars out. * * Returns 0 if success, -2 if the transcoding fails, or -1 otherwise * The value of @inlen after return is the number of octets consumed * as the return value is positive, else unpredictable. * The value of @outlen after return is the number of octets consumed. */ int htmlEncodeEntities(unsigned char* out, int *outlen, const unsigned char* in, int *inlen, int quoteChar) { const unsigned char* processed = in; const unsigned char* outend; const unsigned char* outstart = out; const unsigned char* instart = in; const unsigned char* inend; unsigned int c, d; int trailing; if ((out == NULL) || (outlen == NULL) || (inlen == NULL) || (in == NULL)) return(-1); outend = out + (*outlen); inend = in + (*inlen); while (in < inend) { d = *in++; if (d < 0x80) { c= d; trailing= 0; } else if (d < 0xC0) { /* trailing byte in leading position */ *outlen = out - outstart; *inlen = processed - instart; return(-2); } else if (d < 0xE0) { c= d & 0x1F; trailing= 1; } else if (d < 0xF0) { c= d & 0x0F; trailing= 2; } else if (d < 0xF8) { c= d & 0x07; trailing= 3; } else { /* no chance for this in Ascii */ *outlen = out - outstart; *inlen = processed - instart; return(-2); } if (inend - in < trailing) break; while (trailing--) { if (((d= *in++) & 0xC0) != 0x80) { *outlen = out - outstart; *inlen = processed - instart; return(-2); } c <<= 6; c |= d & 0x3F; } /* assertion: c is a single UTF-4 value */ if ((c < 0x80) && (c != (unsigned int) quoteChar) && (c != '&') && (c != '<') && (c != '>')) { if (out >= outend) break; *out++ = c; } else { const htmlEntityDesc * ent; const char *cp; char nbuf[16]; int len; /* * Try to lookup a predefined HTML entity for it */ ent = htmlEntityValueLookup(c); if (ent == NULL) { snprintf(nbuf, sizeof(nbuf), "#%u", c); cp = nbuf; } else cp = ent->name; len = strlen(cp); if (out + 2 + len > outend) break; *out++ = '&'; memcpy(out, cp, len); out += len; *out++ = ';'; } processed = in; } *outlen = out - outstart; *inlen = processed - instart; return(0); } /************************************************************************ * * * Commodity functions to handle streams * * * ************************************************************************/ #ifdef LIBXML_PUSH_ENABLED /** * htmlNewInputStream: * @ctxt: an HTML parser context * * Create a new input stream structure * Returns the new input stream or NULL */ static htmlParserInputPtr htmlNewInputStream(htmlParserCtxtPtr ctxt) { htmlParserInputPtr input; input = (xmlParserInputPtr) xmlMalloc(sizeof(htmlParserInput)); if (input == NULL) { htmlErrMemory(ctxt, "couldn't allocate a new input stream\n"); return(NULL); } memset(input, 0, sizeof(htmlParserInput)); input->filename = NULL; input->directory = NULL; input->base = NULL; input->cur = NULL; input->buf = NULL; input->line = 1; input->col = 1; input->buf = NULL; input->free = NULL; input->version = NULL; input->consumed = 0; input->length = 0; return(input); } #endif /************************************************************************ * * * Commodity functions, cleanup needed ? * * * ************************************************************************/ /* * all tags allowing pc data from the html 4.01 loose dtd * NOTE: it might be more appropriate to integrate this information * into the html40ElementTable array but I don't want to risk any * binary incompatibility */ static const char *allowPCData[] = { "a", "abbr", "acronym", "address", "applet", "b", "bdo", "big", "blockquote", "body", "button", "caption", "center", "cite", "code", "dd", "del", "dfn", "div", "dt", "em", "font", "form", "h1", "h2", "h3", "h4", "h5", "h6", "i", "iframe", "ins", "kbd", "label", "legend", "li", "noframes", "noscript", "object", "p", "pre", "q", "s", "samp", "small", "span", "strike", "strong", "td", "th", "tt", "u", "var" }; /** * areBlanks: * @ctxt: an HTML parser context * @str: a xmlChar * * @len: the size of @str * * Is this a sequence of blank chars that one can ignore ? * * Returns 1 if ignorable 0 otherwise. */ static int areBlanks(htmlParserCtxtPtr ctxt, const xmlChar *str, int len) { unsigned int i; int j; xmlNodePtr lastChild; xmlDtdPtr dtd; for (j = 0;j < len;j++) if (!(IS_BLANK_CH(str[j]))) return(0); if (CUR == 0) return(1); if (CUR != '<') return(0); if (ctxt->name == NULL) return(1); if (xmlStrEqual(ctxt->name, BAD_CAST"html")) return(1); if (xmlStrEqual(ctxt->name, BAD_CAST"head")) return(1); /* Only strip CDATA children of the body tag for strict HTML DTDs */ if (xmlStrEqual(ctxt->name, BAD_CAST "body") && ctxt->myDoc != NULL) { dtd = xmlGetIntSubset(ctxt->myDoc); if (dtd != NULL && dtd->ExternalID != NULL) { if (!xmlStrcasecmp(dtd->ExternalID, BAD_CAST "-//W3C//DTD HTML 4.01//EN") || !xmlStrcasecmp(dtd->ExternalID, BAD_CAST "-//W3C//DTD HTML 4//EN")) return(1); } } if (ctxt->node == NULL) return(0); lastChild = xmlGetLastChild(ctxt->node); while ((lastChild) && (lastChild->type == XML_COMMENT_NODE)) lastChild = lastChild->prev; if (lastChild == NULL) { if ((ctxt->node->type != XML_ELEMENT_NODE) && (ctxt->node->content != NULL)) return(0); /* keep ws in constructs like ... ... for all tags "b" allowing PCDATA */ for ( i = 0; i < sizeof(allowPCData)/sizeof(allowPCData[0]); i++ ) { if ( xmlStrEqual(ctxt->name, BAD_CAST allowPCData[i]) ) { return(0); } } } else if (xmlNodeIsText(lastChild)) { return(0); } else { /* keep ws in constructs like

xy z

for all tags "p" allowing PCDATA */ for ( i = 0; i < sizeof(allowPCData)/sizeof(allowPCData[0]); i++ ) { if ( xmlStrEqual(lastChild->name, BAD_CAST allowPCData[i]) ) { return(0); } } } return(1); } /** * htmlNewDocNoDtD: * @URI: URI for the dtd, or NULL * @ExternalID: the external ID of the DTD, or NULL * * Creates a new HTML document without a DTD node if @URI and @ExternalID * are NULL * * Returns a new document, do not initialize the DTD if not provided */ htmlDocPtr htmlNewDocNoDtD(const xmlChar *URI, const xmlChar *ExternalID) { xmlDocPtr cur; /* * Allocate a new document and fill the fields. */ cur = (xmlDocPtr) xmlMalloc(sizeof(xmlDoc)); if (cur == NULL) { htmlErrMemory(NULL, "HTML document creation failed\n"); return(NULL); } memset(cur, 0, sizeof(xmlDoc)); cur->type = XML_HTML_DOCUMENT_NODE; cur->version = NULL; cur->intSubset = NULL; cur->doc = cur; cur->name = NULL; cur->children = NULL; cur->extSubset = NULL; cur->oldNs = NULL; cur->encoding = NULL; cur->standalone = 1; cur->compression = 0; cur->ids = NULL; cur->refs = NULL; cur->_private = NULL; cur->charset = XML_CHAR_ENCODING_UTF8; cur->properties = XML_DOC_HTML | XML_DOC_USERBUILT; if ((ExternalID != NULL) || (URI != NULL)) xmlCreateIntSubset(cur, BAD_CAST "html", ExternalID, URI); if ((__xmlRegisterCallbacks) && (xmlRegisterNodeDefaultValue)) xmlRegisterNodeDefaultValue((xmlNodePtr)cur); return(cur); } /** * htmlNewDoc: * @URI: URI for the dtd, or NULL * @ExternalID: the external ID of the DTD, or NULL * * Creates a new HTML document * * Returns a new document */ htmlDocPtr htmlNewDoc(const xmlChar *URI, const xmlChar *ExternalID) { if ((URI == NULL) && (ExternalID == NULL)) return(htmlNewDocNoDtD( BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd", BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN")); return(htmlNewDocNoDtD(URI, ExternalID)); } /************************************************************************ * * * The parser itself * * Relates to http://www.w3.org/TR/html40 * * * ************************************************************************/ /************************************************************************ * * * The parser itself * * * ************************************************************************/ static const xmlChar * htmlParseNameComplex(xmlParserCtxtPtr ctxt); /** * htmlParseHTMLName: * @ctxt: an HTML parser context * * parse an HTML tag or attribute name, note that we convert it to lowercase * since HTML names are not case-sensitive. * * Returns the Tag Name parsed or NULL */ static const xmlChar * htmlParseHTMLName(htmlParserCtxtPtr ctxt) { int i = 0; xmlChar loc[HTML_PARSER_BUFFER_SIZE]; if (!IS_ASCII_LETTER(CUR) && (CUR != '_') && (CUR != ':') && (CUR != '.')) return(NULL); while ((i < HTML_PARSER_BUFFER_SIZE) && ((IS_ASCII_LETTER(CUR)) || (IS_ASCII_DIGIT(CUR)) || (CUR == ':') || (CUR == '-') || (CUR == '_') || (CUR == '.'))) { if ((CUR >= 'A') && (CUR <= 'Z')) loc[i] = CUR + 0x20; else loc[i] = CUR; i++; NEXT; } return(xmlDictLookup(ctxt->dict, loc, i)); } /** * htmlParseHTMLName_nonInvasive: * @ctxt: an HTML parser context * * parse an HTML tag or attribute name, note that we convert it to lowercase * since HTML names are not case-sensitive, this doesn't consume the data * from the stream, it's a look-ahead * * Returns the Tag Name parsed or NULL */ static const xmlChar * htmlParseHTMLName_nonInvasive(htmlParserCtxtPtr ctxt) { int i = 0; xmlChar loc[HTML_PARSER_BUFFER_SIZE]; if (!IS_ASCII_LETTER(NXT(1)) && (NXT(1) != '_') && (NXT(1) != ':')) return(NULL); while ((i < HTML_PARSER_BUFFER_SIZE) && ((IS_ASCII_LETTER(NXT(1+i))) || (IS_ASCII_DIGIT(NXT(1+i))) || (NXT(1+i) == ':') || (NXT(1+i) == '-') || (NXT(1+i) == '_'))) { if ((NXT(1+i) >= 'A') && (NXT(1+i) <= 'Z')) loc[i] = NXT(1+i) + 0x20; else loc[i] = NXT(1+i); i++; } return(xmlDictLookup(ctxt->dict, loc, i)); } /** * htmlParseName: * @ctxt: an HTML parser context * * parse an HTML name, this routine is case sensitive. * * Returns the Name parsed or NULL */ static const xmlChar * htmlParseName(htmlParserCtxtPtr ctxt) { const xmlChar *in; const xmlChar *ret; int count = 0; GROW; /* * Accelerator for simple ASCII names */ in = ctxt->input->cur; if (((*in >= 0x61) && (*in <= 0x7A)) || ((*in >= 0x41) && (*in <= 0x5A)) || (*in == '_') || (*in == ':')) { in++; while (((*in >= 0x61) && (*in <= 0x7A)) || ((*in >= 0x41) && (*in <= 0x5A)) || ((*in >= 0x30) && (*in <= 0x39)) || (*in == '_') || (*in == '-') || (*in == ':') || (*in == '.')) in++; if (in == ctxt->input->end) return(NULL); if ((*in > 0) && (*in < 0x80)) { count = in - ctxt->input->cur; ret = xmlDictLookup(ctxt->dict, ctxt->input->cur, count); ctxt->input->cur = in; ctxt->input->col += count; return(ret); } } return(htmlParseNameComplex(ctxt)); } static const xmlChar * htmlParseNameComplex(xmlParserCtxtPtr ctxt) { int len = 0, l; int c; int count = 0; const xmlChar *base = ctxt->input->base; /* * Handler for more complex cases */ GROW; c = CUR_CHAR(l); if ((c == ' ') || (c == '>') || (c == '/') || /* accelerators */ (!IS_LETTER(c) && (c != '_') && (c != ':'))) { return(NULL); } while ((c != ' ') && (c != '>') && (c != '/') && /* test bigname.xml */ ((IS_LETTER(c)) || (IS_DIGIT(c)) || (c == '.') || (c == '-') || (c == '_') || (c == ':') || (IS_COMBINING(c)) || (IS_EXTENDER(c)))) { if (count++ > 100) { count = 0; GROW; } len += l; NEXTL(l); c = CUR_CHAR(l); if (ctxt->input->base != base) { /* * We changed encoding from an unknown encoding * Input buffer changed location, so we better start again */ return(htmlParseNameComplex(ctxt)); } } if (ctxt->input->cur - ctxt->input->base < len) { /* Sanity check */ htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR, "unexpected change of input buffer", NULL, NULL); return (NULL); } return(xmlDictLookup(ctxt->dict, ctxt->input->cur - len, len)); } /** * htmlParseHTMLAttribute: * @ctxt: an HTML parser context * @stop: a char stop value * * parse an HTML attribute value till the stop (quote), if * stop is 0 then it stops at the first space * * Returns the attribute parsed or NULL */ static xmlChar * htmlParseHTMLAttribute(htmlParserCtxtPtr ctxt, const xmlChar stop) { xmlChar *buffer = NULL; int buffer_size = 0; xmlChar *out = NULL; const xmlChar *name = NULL; const xmlChar *cur = NULL; const htmlEntityDesc * ent; /* * allocate a translation buffer. */ buffer_size = HTML_PARSER_BUFFER_SIZE; buffer = (xmlChar *) xmlMallocAtomic(buffer_size * sizeof(xmlChar)); if (buffer == NULL) { htmlErrMemory(ctxt, "buffer allocation failed\n"); return(NULL); } out = buffer; /* * Ok loop until we reach one of the ending chars */ while ((CUR != 0) && (CUR != stop)) { if ((stop == 0) && (CUR == '>')) break; if ((stop == 0) && (IS_BLANK_CH(CUR))) break; if (CUR == '&') { if (NXT(1) == '#') { unsigned int c; int bits; c = htmlParseCharRef(ctxt); if (c < 0x80) { *out++ = c; bits= -6; } else if (c < 0x800) { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; } else if (c < 0x10000) { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; } else { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; } for ( ; bits >= 0; bits-= 6) { *out++ = ((c >> bits) & 0x3F) | 0x80; } if (out - buffer > buffer_size - 100) { int indx = out - buffer; growBuffer(buffer); out = &buffer[indx]; } } else { ent = htmlParseEntityRef(ctxt, &name); if (name == NULL) { *out++ = '&'; if (out - buffer > buffer_size - 100) { int indx = out - buffer; growBuffer(buffer); out = &buffer[indx]; } } else if (ent == NULL) { *out++ = '&'; cur = name; while (*cur != 0) { if (out - buffer > buffer_size - 100) { int indx = out - buffer; growBuffer(buffer); out = &buffer[indx]; } *out++ = *cur++; } } else { unsigned int c; int bits; if (out - buffer > buffer_size - 100) { int indx = out - buffer; growBuffer(buffer); out = &buffer[indx]; } c = ent->value; if (c < 0x80) { *out++ = c; bits= -6; } else if (c < 0x800) { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; } else if (c < 0x10000) { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; } else { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; } for ( ; bits >= 0; bits-= 6) { *out++ = ((c >> bits) & 0x3F) | 0x80; } } } } else { unsigned int c; int bits, l; if (out - buffer > buffer_size - 100) { int indx = out - buffer; growBuffer(buffer); out = &buffer[indx]; } c = CUR_CHAR(l); if (c < 0x80) { *out++ = c; bits= -6; } else if (c < 0x800) { *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; } else if (c < 0x10000) { *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; } else { *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; } for ( ; bits >= 0; bits-= 6) { *out++ = ((c >> bits) & 0x3F) | 0x80; } NEXT; } } *out = 0; return(buffer); } /** * htmlParseEntityRef: * @ctxt: an HTML parser context * @str: location to store the entity name * * parse an HTML ENTITY references * * [68] EntityRef ::= '&' Name ';' * * Returns the associated htmlEntityDescPtr if found, or NULL otherwise, * if non-NULL *str will have to be freed by the caller. */ const htmlEntityDesc * htmlParseEntityRef(htmlParserCtxtPtr ctxt, const xmlChar **str) { const xmlChar *name; const htmlEntityDesc * ent = NULL; if (str != NULL) *str = NULL; if ((ctxt == NULL) || (ctxt->input == NULL)) return(NULL); if (CUR == '&') { NEXT; name = htmlParseName(ctxt); if (name == NULL) { htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED, "htmlParseEntityRef: no name\n", NULL, NULL); } else { GROW; if (CUR == ';') { if (str != NULL) *str = name; /* * Lookup the entity in the table. */ ent = htmlEntityLookup(name); if (ent != NULL) /* OK that's ugly !!! */ NEXT; } else { htmlParseErr(ctxt, XML_ERR_ENTITYREF_SEMICOL_MISSING, "htmlParseEntityRef: expecting ';'\n", NULL, NULL); if (str != NULL) *str = name; } } } return(ent); } /** * htmlParseAttValue: * @ctxt: an HTML parser context * * parse a value for an attribute * Note: the parser won't do substitution of entities here, this * will be handled later in xmlStringGetNodeList, unless it was * asked for ctxt->replaceEntities != 0 * * Returns the AttValue parsed or NULL. */ static xmlChar * htmlParseAttValue(htmlParserCtxtPtr ctxt) { xmlChar *ret = NULL; if (CUR == '"') { NEXT; ret = htmlParseHTMLAttribute(ctxt, '"'); if (CUR != '"') { htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED, "AttValue: \" expected\n", NULL, NULL); } else NEXT; } else if (CUR == '\'') { NEXT; ret = htmlParseHTMLAttribute(ctxt, '\''); if (CUR != '\'') { htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED, "AttValue: ' expected\n", NULL, NULL); } else NEXT; } else { /* * That's an HTMLism, the attribute value may not be quoted */ ret = htmlParseHTMLAttribute(ctxt, 0); if (ret == NULL) { htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_WITHOUT_VALUE, "AttValue: no value found\n", NULL, NULL); } } return(ret); } /** * htmlParseSystemLiteral: * @ctxt: an HTML parser context * * parse an HTML Literal * * [11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'") * * Returns the SystemLiteral parsed or NULL */ static xmlChar * htmlParseSystemLiteral(htmlParserCtxtPtr ctxt) { size_t len = 0, startPosition = 0; int err = 0; int quote; xmlChar *ret = NULL; if ((CUR != '"') && (CUR != '\'')) { htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_STARTED, "SystemLiteral \" or ' expected\n", NULL, NULL); return(NULL); } quote = CUR; NEXT; if (CUR_PTR < BASE_PTR) return(ret); startPosition = CUR_PTR - BASE_PTR; while ((CUR != 0) && (CUR != quote)) { /* TODO: Handle UTF-8 */ if (!IS_CHAR_CH(CUR)) { htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR, "Invalid char in SystemLiteral 0x%X\n", CUR); err = 1; } NEXT; len++; } if (CUR != quote) { htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED, "Unfinished SystemLiteral\n", NULL, NULL); } else { NEXT; if (err == 0) ret = xmlStrndup((BASE_PTR+startPosition), len); } return(ret); } /** * htmlParsePubidLiteral: * @ctxt: an HTML parser context * * parse an HTML public literal * * [12] PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'" * * Returns the PubidLiteral parsed or NULL. */ static xmlChar * htmlParsePubidLiteral(htmlParserCtxtPtr ctxt) { size_t len = 0, startPosition = 0; int err = 0; int quote; xmlChar *ret = NULL; if ((CUR != '"') && (CUR != '\'')) { htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_STARTED, "PubidLiteral \" or ' expected\n", NULL, NULL); return(NULL); } quote = CUR; NEXT; /* * Name ::= (Letter | '_') (NameChar)* */ if (CUR_PTR < BASE_PTR) return(ret); startPosition = CUR_PTR - BASE_PTR; while ((CUR != 0) && (CUR != quote)) { if (!IS_PUBIDCHAR_CH(CUR)) { htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR, "Invalid char in PubidLiteral 0x%X\n", CUR); err = 1; } len++; NEXT; } if (CUR != quote) { htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED, "Unfinished PubidLiteral\n", NULL, NULL); } else { NEXT; if (err == 0) ret = xmlStrndup((BASE_PTR + startPosition), len); } return(ret); } /** * htmlParseScript: * @ctxt: an HTML parser context * * parse the content of an HTML SCRIPT or STYLE element * http://www.w3.org/TR/html4/sgml/dtd.html#Script * http://www.w3.org/TR/html4/sgml/dtd.html#StyleSheet * http://www.w3.org/TR/html4/types.html#type-script * http://www.w3.org/TR/html4/types.html#h-6.15 * http://www.w3.org/TR/html4/appendix/notes.html#h-B.3.2.1 * * Script data ( %Script; in the DTD) can be the content of the SCRIPT * element and the value of intrinsic event attributes. User agents must * not evaluate script data as HTML markup but instead must pass it on as * data to a script engine. * NOTES: * - The content is passed like CDATA * - the attributes for style and scripting "onXXX" are also described * as CDATA but SGML allows entities references in attributes so their * processing is identical as other attributes */ static void htmlParseScript(htmlParserCtxtPtr ctxt) { xmlChar buf[HTML_PARSER_BIG_BUFFER_SIZE + 5]; int nbchar = 0; int cur,l; SHRINK; cur = CUR_CHAR(l); while (cur != 0) { if ((cur == '<') && (NXT(1) == '/')) { /* * One should break here, the specification is clear: * Authors should therefore escape "recovery) { if (xmlStrncasecmp(ctxt->name, ctxt->input->cur+2, xmlStrlen(ctxt->name)) == 0) { break; /* while */ } else { htmlParseErr(ctxt, XML_ERR_TAG_NAME_MISMATCH, "Element %s embeds close tag\n", ctxt->name, NULL); } } else { if (((NXT(2) >= 'A') && (NXT(2) <= 'Z')) || ((NXT(2) >= 'a') && (NXT(2) <= 'z'))) { break; /* while */ } } } if (IS_CHAR(cur)) { COPY_BUF(l,buf,nbchar,cur); } else { htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR, "Invalid char in CDATA 0x%X\n", cur); } if (nbchar >= HTML_PARSER_BIG_BUFFER_SIZE) { buf[nbchar] = 0; if (ctxt->sax->cdataBlock!= NULL) { /* * Insert as CDATA, which is the same as HTML_PRESERVE_NODE */ ctxt->sax->cdataBlock(ctxt->userData, buf, nbchar); } else if (ctxt->sax->characters != NULL) { ctxt->sax->characters(ctxt->userData, buf, nbchar); } nbchar = 0; } GROW; NEXTL(l); cur = CUR_CHAR(l); } if ((nbchar != 0) && (ctxt->sax != NULL) && (!ctxt->disableSAX)) { buf[nbchar] = 0; if (ctxt->sax->cdataBlock!= NULL) { /* * Insert as CDATA, which is the same as HTML_PRESERVE_NODE */ ctxt->sax->cdataBlock(ctxt->userData, buf, nbchar); } else if (ctxt->sax->characters != NULL) { ctxt->sax->characters(ctxt->userData, buf, nbchar); } } } /** * htmlParseCharDataInternal: * @ctxt: an HTML parser context * @readahead: optional read ahead character in ascii range * * parse a CharData section. * if we are within a CDATA section ']]>' marks an end of section. * * [14] CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*) */ static void htmlParseCharDataInternal(htmlParserCtxtPtr ctxt, int readahead) { xmlChar buf[HTML_PARSER_BIG_BUFFER_SIZE + 6]; int nbchar = 0; int cur, l; int chunk = 0; if (readahead) buf[nbchar++] = readahead; SHRINK; cur = CUR_CHAR(l); while (((cur != '<') || (ctxt->token == '<')) && ((cur != '&') || (ctxt->token == '&')) && (cur != 0)) { if (!(IS_CHAR(cur))) { htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR, "Invalid char in CDATA 0x%X\n", cur); } else { COPY_BUF(l,buf,nbchar,cur); } if (nbchar >= HTML_PARSER_BIG_BUFFER_SIZE) { buf[nbchar] = 0; /* * Ok the segment is to be consumed as chars. */ if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) { if (areBlanks(ctxt, buf, nbchar)) { if (ctxt->keepBlanks) { if (ctxt->sax->characters != NULL) ctxt->sax->characters(ctxt->userData, buf, nbchar); } else { if (ctxt->sax->ignorableWhitespace != NULL) ctxt->sax->ignorableWhitespace(ctxt->userData, buf, nbchar); } } else { htmlCheckParagraph(ctxt); if (ctxt->sax->characters != NULL) ctxt->sax->characters(ctxt->userData, buf, nbchar); } } nbchar = 0; } NEXTL(l); chunk++; if (chunk > HTML_PARSER_BUFFER_SIZE) { chunk = 0; SHRINK; GROW; } cur = CUR_CHAR(l); if (cur == 0) { SHRINK; GROW; cur = CUR_CHAR(l); } } if (nbchar != 0) { buf[nbchar] = 0; /* * Ok the segment is to be consumed as chars. */ if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) { if (areBlanks(ctxt, buf, nbchar)) { if (ctxt->keepBlanks) { if (ctxt->sax->characters != NULL) ctxt->sax->characters(ctxt->userData, buf, nbchar); } else { if (ctxt->sax->ignorableWhitespace != NULL) ctxt->sax->ignorableWhitespace(ctxt->userData, buf, nbchar); } } else { htmlCheckParagraph(ctxt); if (ctxt->sax->characters != NULL) ctxt->sax->characters(ctxt->userData, buf, nbchar); } } } else { /* * Loop detection */ if (cur == 0) ctxt->instate = XML_PARSER_EOF; } } /** * htmlParseCharData: * @ctxt: an HTML parser context * * parse a CharData section. * if we are within a CDATA section ']]>' marks an end of section. * * [14] CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*) */ static void htmlParseCharData(htmlParserCtxtPtr ctxt) { htmlParseCharDataInternal(ctxt, 0); } /** * htmlParseExternalID: * @ctxt: an HTML parser context * @publicID: a xmlChar** receiving PubidLiteral * * Parse an External ID or a Public ID * * [75] ExternalID ::= 'SYSTEM' S SystemLiteral * | 'PUBLIC' S PubidLiteral S SystemLiteral * * [83] PublicID ::= 'PUBLIC' S PubidLiteral * * Returns the function returns SystemLiteral and in the second * case publicID receives PubidLiteral, is strict is off * it is possible to return NULL and have publicID set. */ static xmlChar * htmlParseExternalID(htmlParserCtxtPtr ctxt, xmlChar **publicID) { xmlChar *URI = NULL; if ((UPPER == 'S') && (UPP(1) == 'Y') && (UPP(2) == 'S') && (UPP(3) == 'T') && (UPP(4) == 'E') && (UPP(5) == 'M')) { SKIP(6); if (!IS_BLANK_CH(CUR)) { htmlParseErr(ctxt, XML_ERR_SPACE_REQUIRED, "Space required after 'SYSTEM'\n", NULL, NULL); } SKIP_BLANKS; URI = htmlParseSystemLiteral(ctxt); if (URI == NULL) { htmlParseErr(ctxt, XML_ERR_URI_REQUIRED, "htmlParseExternalID: SYSTEM, no URI\n", NULL, NULL); } } else if ((UPPER == 'P') && (UPP(1) == 'U') && (UPP(2) == 'B') && (UPP(3) == 'L') && (UPP(4) == 'I') && (UPP(5) == 'C')) { SKIP(6); if (!IS_BLANK_CH(CUR)) { htmlParseErr(ctxt, XML_ERR_SPACE_REQUIRED, "Space required after 'PUBLIC'\n", NULL, NULL); } SKIP_BLANKS; *publicID = htmlParsePubidLiteral(ctxt); if (*publicID == NULL) { htmlParseErr(ctxt, XML_ERR_PUBID_REQUIRED, "htmlParseExternalID: PUBLIC, no Public Identifier\n", NULL, NULL); } SKIP_BLANKS; if ((CUR == '"') || (CUR == '\'')) { URI = htmlParseSystemLiteral(ctxt); } } return(URI); } /** * xmlParsePI: * @ctxt: an XML parser context * * parse an XML Processing Instruction. * * [16] PI ::= '' Char*)))? '?>' */ static void htmlParsePI(htmlParserCtxtPtr ctxt) { xmlChar *buf = NULL; int len = 0; int size = HTML_PARSER_BUFFER_SIZE; int cur, l; const xmlChar *target; xmlParserInputState state; int count = 0; if ((RAW == '<') && (NXT(1) == '?')) { state = ctxt->instate; ctxt->instate = XML_PARSER_PI; /* * this is a Processing Instruction. */ SKIP(2); SHRINK; /* * Parse the target name and check for special support like * namespace. */ target = htmlParseName(ctxt); if (target != NULL) { if (RAW == '>') { SKIP(1); /* * SAX: PI detected. */ if ((ctxt->sax) && (!ctxt->disableSAX) && (ctxt->sax->processingInstruction != NULL)) ctxt->sax->processingInstruction(ctxt->userData, target, NULL); ctxt->instate = state; return; } buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar)); if (buf == NULL) { htmlErrMemory(ctxt, NULL); ctxt->instate = state; return; } cur = CUR; if (!IS_BLANK(cur)) { htmlParseErr(ctxt, XML_ERR_SPACE_REQUIRED, "ParsePI: PI %s space expected\n", target, NULL); } SKIP_BLANKS; cur = CUR_CHAR(l); while ((cur != 0) && (cur != '>')) { if (len + 5 >= size) { xmlChar *tmp; size *= 2; tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar)); if (tmp == NULL) { htmlErrMemory(ctxt, NULL); xmlFree(buf); ctxt->instate = state; return; } buf = tmp; } count++; if (count > 50) { GROW; count = 0; } if (IS_CHAR(cur)) { COPY_BUF(l,buf,len,cur); } else { htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR, "Invalid char in processing instruction " "0x%X\n", cur); } NEXTL(l); cur = CUR_CHAR(l); if (cur == 0) { SHRINK; GROW; cur = CUR_CHAR(l); } } buf[len] = 0; if (cur != '>') { htmlParseErr(ctxt, XML_ERR_PI_NOT_FINISHED, "ParsePI: PI %s never end ...\n", target, NULL); } else { SKIP(1); /* * SAX: PI detected. */ if ((ctxt->sax) && (!ctxt->disableSAX) && (ctxt->sax->processingInstruction != NULL)) ctxt->sax->processingInstruction(ctxt->userData, target, buf); } xmlFree(buf); } else { htmlParseErr(ctxt, XML_ERR_PI_NOT_STARTED, "PI is not started correctly", NULL, NULL); } ctxt->instate = state; } } /** * htmlParseComment: * @ctxt: an HTML parser context * * Parse an XML (SGML) comment * * [15] Comment ::= '' */ static void htmlParseComment(htmlParserCtxtPtr ctxt) { xmlChar *buf = NULL; int len; int size = HTML_PARSER_BUFFER_SIZE; int q, ql; int r, rl; int cur, l; int next, nl; xmlParserInputState state; /* * Check that there is a comment right here. */ if ((RAW != '<') || (NXT(1) != '!') || (NXT(2) != '-') || (NXT(3) != '-')) return; state = ctxt->instate; ctxt->instate = XML_PARSER_COMMENT; SHRINK; SKIP(4); buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar)); if (buf == NULL) { htmlErrMemory(ctxt, "buffer allocation failed\n"); ctxt->instate = state; return; } len = 0; buf[len] = 0; q = CUR_CHAR(ql); if (q == 0) goto unfinished; NEXTL(ql); r = CUR_CHAR(rl); if (r == 0) goto unfinished; NEXTL(rl); cur = CUR_CHAR(l); while ((cur != 0) && ((cur != '>') || (r != '-') || (q != '-'))) { NEXTL(l); next = CUR_CHAR(nl); if (next == 0) { SHRINK; GROW; next = CUR_CHAR(nl); } if ((q == '-') && (r == '-') && (cur == '!') && (next == '>')) { htmlParseErr(ctxt, XML_ERR_COMMENT_NOT_FINISHED, "Comment incorrectly closed by '--!>'", NULL, NULL); cur = '>'; break; } if (len + 5 >= size) { xmlChar *tmp; size *= 2; tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar)); if (tmp == NULL) { xmlFree(buf); htmlErrMemory(ctxt, "growing buffer failed\n"); ctxt->instate = state; return; } buf = tmp; } if (IS_CHAR(q)) { COPY_BUF(ql,buf,len,q); } else { htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR, "Invalid char in comment 0x%X\n", q); } q = r; ql = rl; r = cur; rl = l; cur = next; l = nl; } buf[len] = 0; if (cur == '>') { NEXT; if ((ctxt->sax != NULL) && (ctxt->sax->comment != NULL) && (!ctxt->disableSAX)) ctxt->sax->comment(ctxt->userData, buf); xmlFree(buf); ctxt->instate = state; return; } unfinished: htmlParseErr(ctxt, XML_ERR_COMMENT_NOT_FINISHED, "Comment not terminated \n" as well as WHATWG-recommended incorrectly-closed tags. * (See https://html.spec.whatwg.org/multipage/parsing.html#parse-error-incorrectly-closed-comment) * This function has a side effect of (possibly) incrementing ctxt->checkIndex * to avoid rescanning sequences of bytes, it DOES change the state of the * parser, do not use liberally. * This wraps to htmlParseLookupSequence() * * Returns the index to the current parsing point if the full sequence is available, -1 otherwise. */ static int htmlParseLookupCommentEnd(htmlParserCtxtPtr ctxt) { int mark = 0; int cur = CUR_PTR - BASE_PTR; while (mark >= 0) { mark = htmlParseLookupSequence(ctxt, '-', '-', 0, 0); if ((mark < 0) || (NXT(mark+2) == '>') || ((NXT(mark+2) == '!') && (NXT(mark+3) == '>'))) { return mark; } ctxt->checkIndex = cur + mark + 1; } return mark; } /** * htmlParseTryOrFinish: * @ctxt: an HTML parser context * @terminate: last chunk indicator * * Try to progress on parsing * * Returns zero if no parsing was possible */ static int htmlParseTryOrFinish(htmlParserCtxtPtr ctxt, int terminate) { int ret = 0; htmlParserInputPtr in; ptrdiff_t avail = 0; xmlChar cur, next; htmlParserNodeInfo node_info; #ifdef DEBUG_PUSH switch (ctxt->instate) { case XML_PARSER_EOF: xmlGenericError(xmlGenericErrorContext, "HPP: try EOF\n"); break; case XML_PARSER_START: xmlGenericError(xmlGenericErrorContext, "HPP: try START\n"); break; case XML_PARSER_MISC: xmlGenericError(xmlGenericErrorContext, "HPP: try MISC\n");break; case XML_PARSER_COMMENT: xmlGenericError(xmlGenericErrorContext, "HPP: try COMMENT\n");break; case XML_PARSER_PROLOG: xmlGenericError(xmlGenericErrorContext, "HPP: try PROLOG\n");break; case XML_PARSER_START_TAG: xmlGenericError(xmlGenericErrorContext, "HPP: try START_TAG\n");break; case XML_PARSER_CONTENT: xmlGenericError(xmlGenericErrorContext, "HPP: try CONTENT\n");break; case XML_PARSER_CDATA_SECTION: xmlGenericError(xmlGenericErrorContext, "HPP: try CDATA_SECTION\n");break; case XML_PARSER_END_TAG: xmlGenericError(xmlGenericErrorContext, "HPP: try END_TAG\n");break; case XML_PARSER_ENTITY_DECL: xmlGenericError(xmlGenericErrorContext, "HPP: try ENTITY_DECL\n");break; case XML_PARSER_ENTITY_VALUE: xmlGenericError(xmlGenericErrorContext, "HPP: try ENTITY_VALUE\n");break; case XML_PARSER_ATTRIBUTE_VALUE: xmlGenericError(xmlGenericErrorContext, "HPP: try ATTRIBUTE_VALUE\n");break; case XML_PARSER_DTD: xmlGenericError(xmlGenericErrorContext, "HPP: try DTD\n");break; case XML_PARSER_EPILOG: xmlGenericError(xmlGenericErrorContext, "HPP: try EPILOG\n");break; case XML_PARSER_PI: xmlGenericError(xmlGenericErrorContext, "HPP: try PI\n");break; case XML_PARSER_SYSTEM_LITERAL: xmlGenericError(xmlGenericErrorContext, "HPP: try SYSTEM_LITERAL\n");break; } #endif while (1) { in = ctxt->input; if (in == NULL) break; if (in->buf == NULL) avail = in->length - (in->cur - in->base); else avail = (ptrdiff_t)xmlBufUse(in->buf->buffer) - (in->cur - in->base); if ((avail == 0) && (terminate)) { htmlAutoCloseOnEnd(ctxt); if ((ctxt->nameNr == 0) && (ctxt->instate != XML_PARSER_EOF)) { /* * SAX: end of the document processing. */ ctxt->instate = XML_PARSER_EOF; if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) ctxt->sax->endDocument(ctxt->userData); } } if (avail < 1) goto done; /* * This is done to make progress and avoid an infinite loop * if a parsing attempt was aborted by hitting a NUL byte. After * changing htmlCurrentChar, this probably isn't necessary anymore. * We should consider removing this check. */ cur = in->cur[0]; if (cur == 0) { SKIP(1); continue; } switch (ctxt->instate) { case XML_PARSER_EOF: /* * Document parsing is done ! */ goto done; case XML_PARSER_START: /* * Very first chars read from the document flow. */ cur = in->cur[0]; if (IS_BLANK_CH(cur)) { SKIP_BLANKS; if (in->buf == NULL) avail = in->length - (in->cur - in->base); else avail = (ptrdiff_t)xmlBufUse(in->buf->buffer) - (in->cur - in->base); } if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator); if ((ctxt->sax) && (ctxt->sax->startDocument) && (!ctxt->disableSAX)) ctxt->sax->startDocument(ctxt->userData); cur = in->cur[0]; next = in->cur[1]; if ((cur == '<') && (next == '!') && (UPP(2) == 'D') && (UPP(3) == 'O') && (UPP(4) == 'C') && (UPP(5) == 'T') && (UPP(6) == 'Y') && (UPP(7) == 'P') && (UPP(8) == 'E')) { if ((!terminate) && (htmlParseLookupSequence(ctxt, '>', 0, 0, 1) < 0)) goto done; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: Parsing internal subset\n"); #endif htmlParseDocTypeDecl(ctxt); ctxt->instate = XML_PARSER_PROLOG; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering PROLOG\n"); #endif } else { ctxt->instate = XML_PARSER_MISC; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering MISC\n"); #endif } break; case XML_PARSER_MISC: SKIP_BLANKS; if (in->buf == NULL) avail = in->length - (in->cur - in->base); else avail = (ptrdiff_t)xmlBufUse(in->buf->buffer) - (in->cur - in->base); /* * no chars in buffer */ if (avail < 1) goto done; /* * not enough chars in buffer */ if (avail < 2) { if (!terminate) goto done; else next = ' '; } else { next = in->cur[1]; } cur = in->cur[0]; if ((cur == '<') && (next == '!') && (in->cur[2] == '-') && (in->cur[3] == '-')) { if ((!terminate) && (htmlParseLookupCommentEnd(ctxt) < 0)) goto done; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: Parsing Comment\n"); #endif htmlParseComment(ctxt); ctxt->instate = XML_PARSER_MISC; } else if ((cur == '<') && (next == '?')) { if ((!terminate) && (htmlParseLookupSequence(ctxt, '>', 0, 0, 0) < 0)) goto done; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: Parsing PI\n"); #endif htmlParsePI(ctxt); ctxt->instate = XML_PARSER_MISC; } else if ((cur == '<') && (next == '!') && (UPP(2) == 'D') && (UPP(3) == 'O') && (UPP(4) == 'C') && (UPP(5) == 'T') && (UPP(6) == 'Y') && (UPP(7) == 'P') && (UPP(8) == 'E')) { if ((!terminate) && (htmlParseLookupSequence(ctxt, '>', 0, 0, 1) < 0)) goto done; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: Parsing internal subset\n"); #endif htmlParseDocTypeDecl(ctxt); ctxt->instate = XML_PARSER_PROLOG; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering PROLOG\n"); #endif } else if ((cur == '<') && (next == '!') && (avail < 9)) { goto done; } else { ctxt->instate = XML_PARSER_CONTENT; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering START_TAG\n"); #endif } break; case XML_PARSER_PROLOG: SKIP_BLANKS; if (in->buf == NULL) avail = in->length - (in->cur - in->base); else avail = (ptrdiff_t)xmlBufUse(in->buf->buffer) - (in->cur - in->base); if (avail < 2) goto done; cur = in->cur[0]; next = in->cur[1]; if ((cur == '<') && (next == '!') && (in->cur[2] == '-') && (in->cur[3] == '-')) { if ((!terminate) && (htmlParseLookupCommentEnd(ctxt) < 0)) goto done; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: Parsing Comment\n"); #endif htmlParseComment(ctxt); ctxt->instate = XML_PARSER_PROLOG; } else if ((cur == '<') && (next == '?')) { if ((!terminate) && (htmlParseLookupSequence(ctxt, '>', 0, 0, 0) < 0)) goto done; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: Parsing PI\n"); #endif htmlParsePI(ctxt); ctxt->instate = XML_PARSER_PROLOG; } else if ((cur == '<') && (next == '!') && (avail < 4)) { goto done; } else { ctxt->instate = XML_PARSER_CONTENT; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering START_TAG\n"); #endif } break; case XML_PARSER_EPILOG: if (in->buf == NULL) avail = in->length - (in->cur - in->base); else avail = (ptrdiff_t)xmlBufUse(in->buf->buffer) - (in->cur - in->base); if (avail < 1) goto done; cur = in->cur[0]; if (IS_BLANK_CH(cur)) { htmlParseCharData(ctxt); goto done; } if (avail < 2) goto done; next = in->cur[1]; if ((cur == '<') && (next == '!') && (in->cur[2] == '-') && (in->cur[3] == '-')) { if ((!terminate) && (htmlParseLookupCommentEnd(ctxt) < 0)) goto done; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: Parsing Comment\n"); #endif htmlParseComment(ctxt); ctxt->instate = XML_PARSER_EPILOG; } else if ((cur == '<') && (next == '?')) { if ((!terminate) && (htmlParseLookupSequence(ctxt, '>', 0, 0, 0) < 0)) goto done; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: Parsing PI\n"); #endif htmlParsePI(ctxt); ctxt->instate = XML_PARSER_EPILOG; } else if ((cur == '<') && (next == '!') && (avail < 4)) { goto done; } else { ctxt->errNo = XML_ERR_DOCUMENT_END; ctxt->wellFormed = 0; ctxt->instate = XML_PARSER_EOF; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering EOF\n"); #endif if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) ctxt->sax->endDocument(ctxt->userData); goto done; } break; case XML_PARSER_START_TAG: { const xmlChar *name; int failed; const htmlElemDesc * info; /* * no chars in buffer */ if (avail < 1) goto done; /* * not enough chars in buffer */ if (avail < 2) { if (!terminate) goto done; else next = ' '; } else { next = in->cur[1]; } cur = in->cur[0]; if (cur != '<') { ctxt->instate = XML_PARSER_CONTENT; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering CONTENT\n"); #endif break; } if (next == '/') { ctxt->instate = XML_PARSER_END_TAG; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering END_TAG\n"); #endif break; } if ((!terminate) && (htmlParseLookupSequence(ctxt, '>', 0, 0, 1) < 0)) goto done; /* Capture start position */ if (ctxt->record_info) { node_info.begin_pos = ctxt->input->consumed + (CUR_PTR - ctxt->input->base); node_info.begin_line = ctxt->input->line; } failed = htmlParseStartTag(ctxt); name = ctxt->name; if ((failed == -1) || (name == NULL)) { if (CUR == '>') NEXT; break; } /* * Lookup the info for that element. */ info = htmlTagLookup(name); if (info == NULL) { htmlParseErr(ctxt, XML_HTML_UNKNOWN_TAG, "Tag %s invalid\n", name, NULL); } /* * Check for an Empty Element labeled the XML/SGML way */ if ((CUR == '/') && (NXT(1) == '>')) { SKIP(2); if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) ctxt->sax->endElement(ctxt->userData, name); htmlnamePop(ctxt); ctxt->instate = XML_PARSER_CONTENT; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering CONTENT\n"); #endif break; } if (CUR == '>') { NEXT; } else { htmlParseErr(ctxt, XML_ERR_GT_REQUIRED, "Couldn't find end of Start Tag %s\n", name, NULL); /* * end of parsing of this node. */ if (xmlStrEqual(name, ctxt->name)) { nodePop(ctxt); htmlnamePop(ctxt); } if (ctxt->record_info) htmlNodeInfoPush(ctxt, &node_info); ctxt->instate = XML_PARSER_CONTENT; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering CONTENT\n"); #endif break; } /* * Check for an Empty Element from DTD definition */ if ((info != NULL) && (info->empty)) { if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) ctxt->sax->endElement(ctxt->userData, name); htmlnamePop(ctxt); } if (ctxt->record_info) htmlNodeInfoPush(ctxt, &node_info); ctxt->instate = XML_PARSER_CONTENT; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering CONTENT\n"); #endif break; } case XML_PARSER_CONTENT: { xmlChar chr[2] = { 0, 0 }; /* * Handle preparsed entities and charRef */ if (ctxt->token != 0) { chr[0] = (xmlChar) ctxt->token; htmlCheckParagraph(ctxt); if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL)) ctxt->sax->characters(ctxt->userData, chr, 1); ctxt->token = 0; ctxt->checkIndex = 0; } if ((avail == 1) && (terminate)) { cur = in->cur[0]; if ((cur != '<') && (cur != '&')) { if (ctxt->sax != NULL) { chr[0] = cur; if (IS_BLANK_CH(cur)) { if (ctxt->keepBlanks) { if (ctxt->sax->characters != NULL) ctxt->sax->characters( ctxt->userData, chr, 1); } else { if (ctxt->sax->ignorableWhitespace != NULL) ctxt->sax->ignorableWhitespace( ctxt->userData, chr, 1); } } else { htmlCheckParagraph(ctxt); if (ctxt->sax->characters != NULL) ctxt->sax->characters( ctxt->userData, chr, 1); } } ctxt->token = 0; ctxt->checkIndex = 0; in->cur++; break; } } if (avail < 2) goto done; cur = in->cur[0]; next = in->cur[1]; if ((xmlStrEqual(ctxt->name, BAD_CAST"script")) || (xmlStrEqual(ctxt->name, BAD_CAST"style"))) { /* * Handle SCRIPT/STYLE separately */ if (!terminate) { int idx; xmlChar val; idx = htmlParseLookupSequence(ctxt, '<', '/', 0, 0); if (idx < 0) goto done; val = in->cur[idx + 2]; if (val == 0) /* bad cut of input */ goto done; } htmlParseScript(ctxt); if ((cur == '<') && (next == '/')) { ctxt->instate = XML_PARSER_END_TAG; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering END_TAG\n"); #endif break; } } else { /* * Sometimes DOCTYPE arrives in the middle of the document */ if ((cur == '<') && (next == '!') && (UPP(2) == 'D') && (UPP(3) == 'O') && (UPP(4) == 'C') && (UPP(5) == 'T') && (UPP(6) == 'Y') && (UPP(7) == 'P') && (UPP(8) == 'E')) { if ((!terminate) && (htmlParseLookupSequence(ctxt, '>', 0, 0, 1) < 0)) goto done; htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR, "Misplaced DOCTYPE declaration\n", BAD_CAST "DOCTYPE" , NULL); htmlParseDocTypeDecl(ctxt); } else if ((cur == '<') && (next == '!') && (in->cur[2] == '-') && (in->cur[3] == '-')) { if ((!terminate) && (htmlParseLookupCommentEnd(ctxt) < 0)) goto done; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: Parsing Comment\n"); #endif htmlParseComment(ctxt); ctxt->instate = XML_PARSER_CONTENT; } else if ((cur == '<') && (next == '?')) { if ((!terminate) && (htmlParseLookupSequence(ctxt, '>', 0, 0, 0) < 0)) goto done; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: Parsing PI\n"); #endif htmlParsePI(ctxt); ctxt->instate = XML_PARSER_CONTENT; } else if ((cur == '<') && (next == '!') && (avail < 4)) { goto done; } else if ((cur == '<') && (next == '/')) { ctxt->instate = XML_PARSER_END_TAG; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering END_TAG\n"); #endif break; } else if (cur == '<') { if ((!terminate) && (next == 0)) goto done; ctxt->instate = XML_PARSER_START_TAG; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering START_TAG\n"); #endif break; } else { /* * check that the text sequence is complete * before handing out the data to the parser * to avoid problems with erroneous end of * data detection. */ if ((!terminate) && (htmlParseLookupSequence(ctxt, '<', 0, 0, 0) < 0)) goto done; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: Parsing char data\n"); #endif while ((ctxt->instate != XML_PARSER_EOF) && (cur != '<') && (in->cur < in->end)) { if (cur == '&') { htmlParseReference(ctxt); } else { htmlParseCharData(ctxt); } cur = in->cur[0]; } } } break; } case XML_PARSER_END_TAG: if (avail < 2) goto done; if ((!terminate) && (htmlParseLookupSequence(ctxt, '>', 0, 0, 0) < 0)) goto done; htmlParseEndTag(ctxt); if (ctxt->nameNr == 0) { ctxt->instate = XML_PARSER_EPILOG; } else { ctxt->instate = XML_PARSER_CONTENT; } ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering CONTENT\n"); #endif break; case XML_PARSER_CDATA_SECTION: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR, "HPP: internal error, state == CDATA\n", NULL, NULL); ctxt->instate = XML_PARSER_CONTENT; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering CONTENT\n"); #endif break; case XML_PARSER_DTD: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR, "HPP: internal error, state == DTD\n", NULL, NULL); ctxt->instate = XML_PARSER_CONTENT; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering CONTENT\n"); #endif break; case XML_PARSER_COMMENT: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR, "HPP: internal error, state == COMMENT\n", NULL, NULL); ctxt->instate = XML_PARSER_CONTENT; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering CONTENT\n"); #endif break; case XML_PARSER_PI: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR, "HPP: internal error, state == PI\n", NULL, NULL); ctxt->instate = XML_PARSER_CONTENT; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering CONTENT\n"); #endif break; case XML_PARSER_ENTITY_DECL: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR, "HPP: internal error, state == ENTITY_DECL\n", NULL, NULL); ctxt->instate = XML_PARSER_CONTENT; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering CONTENT\n"); #endif break; case XML_PARSER_ENTITY_VALUE: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR, "HPP: internal error, state == ENTITY_VALUE\n", NULL, NULL); ctxt->instate = XML_PARSER_CONTENT; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering DTD\n"); #endif break; case XML_PARSER_ATTRIBUTE_VALUE: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR, "HPP: internal error, state == ATTRIBUTE_VALUE\n", NULL, NULL); ctxt->instate = XML_PARSER_START_TAG; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering START_TAG\n"); #endif break; case XML_PARSER_SYSTEM_LITERAL: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR, "HPP: internal error, state == XML_PARSER_SYSTEM_LITERAL\n", NULL, NULL); ctxt->instate = XML_PARSER_CONTENT; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering CONTENT\n"); #endif break; case XML_PARSER_IGNORE: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR, "HPP: internal error, state == XML_PARSER_IGNORE\n", NULL, NULL); ctxt->instate = XML_PARSER_CONTENT; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering CONTENT\n"); #endif break; case XML_PARSER_PUBLIC_LITERAL: htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR, "HPP: internal error, state == XML_PARSER_LITERAL\n", NULL, NULL); ctxt->instate = XML_PARSER_CONTENT; ctxt->checkIndex = 0; #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: entering CONTENT\n"); #endif break; } } done: if ((avail == 0) && (terminate)) { htmlAutoCloseOnEnd(ctxt); if ((ctxt->nameNr == 0) && (ctxt->instate != XML_PARSER_EOF)) { /* * SAX: end of the document processing. */ ctxt->instate = XML_PARSER_EOF; if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) ctxt->sax->endDocument(ctxt->userData); } } if ((!(ctxt->options & HTML_PARSE_NODEFDTD)) && (ctxt->myDoc != NULL) && ((terminate) || (ctxt->instate == XML_PARSER_EOF) || (ctxt->instate == XML_PARSER_EPILOG))) { xmlDtdPtr dtd; dtd = xmlGetIntSubset(ctxt->myDoc); if (dtd == NULL) ctxt->myDoc->intSubset = xmlCreateIntSubset(ctxt->myDoc, BAD_CAST "html", BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN", BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd"); } #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: done %d\n", ret); #endif return(ret); } /** * htmlParseChunk: * @ctxt: an HTML parser context * @chunk: an char array * @size: the size in byte of the chunk * @terminate: last chunk indicator * * Parse a Chunk of memory * * Returns zero if no error, the xmlParserErrors otherwise. */ int htmlParseChunk(htmlParserCtxtPtr ctxt, const char *chunk, int size, int terminate) { if ((ctxt == NULL) || (ctxt->input == NULL)) { htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR, "htmlParseChunk: context error\n", NULL, NULL); return(XML_ERR_INTERNAL_ERROR); } if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) && (ctxt->input->buf != NULL) && (ctxt->instate != XML_PARSER_EOF)) { size_t base = xmlBufGetInputBase(ctxt->input->buf->buffer, ctxt->input); size_t cur = ctxt->input->cur - ctxt->input->base; int res; res = xmlParserInputBufferPush(ctxt->input->buf, size, chunk); xmlBufSetInputBaseCur(ctxt->input->buf->buffer, ctxt->input, base, cur); if (res < 0) { ctxt->errNo = XML_PARSER_EOF; ctxt->disableSAX = 1; return (XML_PARSER_EOF); } #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: pushed %d\n", size); #endif #if 0 if ((terminate) || (ctxt->input->buf->buffer->use > 80)) htmlParseTryOrFinish(ctxt, terminate); #endif } else if (ctxt->instate != XML_PARSER_EOF) { if ((ctxt->input != NULL) && ctxt->input->buf != NULL) { xmlParserInputBufferPtr in = ctxt->input->buf; if ((in->encoder != NULL) && (in->buffer != NULL) && (in->raw != NULL)) { int nbchars; size_t base = xmlBufGetInputBase(in->buffer, ctxt->input); size_t current = ctxt->input->cur - ctxt->input->base; nbchars = xmlCharEncInput(in, terminate); xmlBufSetInputBaseCur(in->buffer, ctxt->input, base, current); if (nbchars < 0) { htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING, "encoder error\n", NULL, NULL); return(XML_ERR_INVALID_ENCODING); } } } } htmlParseTryOrFinish(ctxt, terminate); if (terminate) { if ((ctxt->instate != XML_PARSER_EOF) && (ctxt->instate != XML_PARSER_EPILOG) && (ctxt->instate != XML_PARSER_MISC)) { ctxt->errNo = XML_ERR_DOCUMENT_END; ctxt->wellFormed = 0; } if (ctxt->instate != XML_PARSER_EOF) { if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) ctxt->sax->endDocument(ctxt->userData); } ctxt->instate = XML_PARSER_EOF; } return((xmlParserErrors) ctxt->errNo); } /************************************************************************ * * * User entry points * * * ************************************************************************/ /** * htmlCreatePushParserCtxt: * @sax: a SAX handler * @user_data: The user data returned on SAX callbacks * @chunk: a pointer to an array of chars * @size: number of chars in the array * @filename: an optional file name or URI * @enc: an optional encoding * * Create a parser context for using the HTML parser in push mode * The value of @filename is used for fetching external entities * and error/warning reports. * * Returns the new parser context or NULL */ htmlParserCtxtPtr htmlCreatePushParserCtxt(htmlSAXHandlerPtr sax, void *user_data, const char *chunk, int size, const char *filename, xmlCharEncoding enc) { htmlParserCtxtPtr ctxt; htmlParserInputPtr inputStream; xmlParserInputBufferPtr buf; xmlInitParser(); buf = xmlAllocParserInputBuffer(enc); if (buf == NULL) return(NULL); ctxt = htmlNewParserCtxt(); if (ctxt == NULL) { xmlFreeParserInputBuffer(buf); return(NULL); } if(enc==XML_CHAR_ENCODING_UTF8 || buf->encoder) ctxt->charset=XML_CHAR_ENCODING_UTF8; if (sax != NULL) { if (ctxt->sax != (xmlSAXHandlerPtr) &htmlDefaultSAXHandler) xmlFree(ctxt->sax); ctxt->sax = (htmlSAXHandlerPtr) xmlMalloc(sizeof(htmlSAXHandler)); if (ctxt->sax == NULL) { xmlFree(buf); xmlFree(ctxt); return(NULL); } memcpy(ctxt->sax, sax, sizeof(htmlSAXHandler)); if (user_data != NULL) ctxt->userData = user_data; } if (filename == NULL) { ctxt->directory = NULL; } else { ctxt->directory = xmlParserGetDirectory(filename); } inputStream = htmlNewInputStream(ctxt); if (inputStream == NULL) { xmlFreeParserCtxt(ctxt); xmlFree(buf); return(NULL); } if (filename == NULL) inputStream->filename = NULL; else inputStream->filename = (char *) xmlCanonicPath((const xmlChar *) filename); inputStream->buf = buf; xmlBufResetInput(buf->buffer, inputStream); inputPush(ctxt, inputStream); if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) && (ctxt->input->buf != NULL)) { size_t base = xmlBufGetInputBase(ctxt->input->buf->buffer, ctxt->input); size_t cur = ctxt->input->cur - ctxt->input->base; xmlParserInputBufferPush(ctxt->input->buf, size, chunk); xmlBufSetInputBaseCur(ctxt->input->buf->buffer, ctxt->input, base, cur); #ifdef DEBUG_PUSH xmlGenericError(xmlGenericErrorContext, "HPP: pushed %d\n", size); #endif } ctxt->progressive = 1; return(ctxt); } #endif /* LIBXML_PUSH_ENABLED */ /** * htmlSAXParseDoc: * @cur: a pointer to an array of xmlChar * @encoding: a free form C string describing the HTML document encoding, or NULL * @sax: the SAX handler block * @userData: if using SAX, this pointer will be provided on callbacks. * * Parse an HTML in-memory document. If sax is not NULL, use the SAX callbacks * to handle parse events. If sax is NULL, fallback to the default DOM * behavior and return a tree. * * Returns the resulting document tree unless SAX is NULL or the document is * not well formed. */ htmlDocPtr htmlSAXParseDoc(const xmlChar *cur, const char *encoding, htmlSAXHandlerPtr sax, void *userData) { htmlDocPtr ret; htmlParserCtxtPtr ctxt; xmlInitParser(); if (cur == NULL) return(NULL); ctxt = htmlCreateDocParserCtxt(cur, encoding); if (ctxt == NULL) return(NULL); if (sax != NULL) { if (ctxt->sax != NULL) xmlFree (ctxt->sax); ctxt->sax = sax; ctxt->userData = userData; } htmlParseDocument(ctxt); ret = ctxt->myDoc; if (sax != NULL) { ctxt->sax = NULL; ctxt->userData = NULL; } htmlFreeParserCtxt(ctxt); return(ret); } /** * htmlParseDoc: * @cur: a pointer to an array of xmlChar * @encoding: a free form C string describing the HTML document encoding, or NULL * * parse an HTML in-memory document and build a tree. * * Returns the resulting document tree */ htmlDocPtr htmlParseDoc(const xmlChar *cur, const char *encoding) { return(htmlSAXParseDoc(cur, encoding, NULL, NULL)); } /** * htmlCreateFileParserCtxt: * @filename: the filename * @encoding: a free form C string describing the HTML document encoding, or NULL * * Create a parser context for a file content. * Automatic support for ZLIB/Compress compressed document is provided * by default if found at compile-time. * * Returns the new parser context or NULL */ htmlParserCtxtPtr htmlCreateFileParserCtxt(const char *filename, const char *encoding) { htmlParserCtxtPtr ctxt; htmlParserInputPtr inputStream; char *canonicFilename; /* htmlCharEncoding enc; */ xmlChar *content, *content_line = (xmlChar *) "charset="; if (filename == NULL) return(NULL); ctxt = htmlNewParserCtxt(); if (ctxt == NULL) { return(NULL); } canonicFilename = (char *) xmlCanonicPath((const xmlChar *) filename); if (canonicFilename == NULL) { #ifdef LIBXML_SAX1_ENABLED if (xmlDefaultSAXHandler.error != NULL) { xmlDefaultSAXHandler.error(NULL, "out of memory\n"); } #endif xmlFreeParserCtxt(ctxt); return(NULL); } inputStream = xmlLoadExternalEntity(canonicFilename, NULL, ctxt); xmlFree(canonicFilename); if (inputStream == NULL) { xmlFreeParserCtxt(ctxt); return(NULL); } inputPush(ctxt, inputStream); /* set encoding */ if (encoding) { size_t l = strlen(encoding); if (l < 1000) { content = xmlMallocAtomic (xmlStrlen(content_line) + l + 1); if (content) { strcpy ((char *)content, (char *)content_line); strcat ((char *)content, (char *)encoding); htmlCheckEncoding (ctxt, content); xmlFree (content); } } } return(ctxt); } /** * htmlSAXParseFile: * @filename: the filename * @encoding: a free form C string describing the HTML document encoding, or NULL * @sax: the SAX handler block * @userData: if using SAX, this pointer will be provided on callbacks. * * parse an HTML file and build a tree. Automatic support for ZLIB/Compress * compressed document is provided by default if found at compile-time. * It use the given SAX function block to handle the parsing callback. * If sax is NULL, fallback to the default DOM tree building routines. * * Returns the resulting document tree unless SAX is NULL or the document is * not well formed. */ htmlDocPtr htmlSAXParseFile(const char *filename, const char *encoding, htmlSAXHandlerPtr sax, void *userData) { htmlDocPtr ret; htmlParserCtxtPtr ctxt; htmlSAXHandlerPtr oldsax = NULL; xmlInitParser(); ctxt = htmlCreateFileParserCtxt(filename, encoding); if (ctxt == NULL) return(NULL); if (sax != NULL) { oldsax = ctxt->sax; ctxt->sax = sax; ctxt->userData = userData; } htmlParseDocument(ctxt); ret = ctxt->myDoc; if (sax != NULL) { ctxt->sax = oldsax; ctxt->userData = NULL; } htmlFreeParserCtxt(ctxt); return(ret); } /** * htmlParseFile: * @filename: the filename * @encoding: a free form C string describing the HTML document encoding, or NULL * * parse an HTML file and build a tree. Automatic support for ZLIB/Compress * compressed document is provided by default if found at compile-time. * * Returns the resulting document tree */ htmlDocPtr htmlParseFile(const char *filename, const char *encoding) { return(htmlSAXParseFile(filename, encoding, NULL, NULL)); } /** * htmlHandleOmittedElem: * @val: int 0 or 1 * * Set and return the previous value for handling HTML omitted tags. * * Returns the last value for 0 for no handling, 1 for auto insertion. */ int htmlHandleOmittedElem(int val) { int old = htmlOmittedDefaultValue; htmlOmittedDefaultValue = val; return(old); } /** * htmlElementAllowedHere: * @parent: HTML parent element * @elt: HTML element * * Checks whether an HTML element may be a direct child of a parent element. * Note - doesn't check for deprecated elements * * Returns 1 if allowed; 0 otherwise. */ int htmlElementAllowedHere(const htmlElemDesc* parent, const xmlChar* elt) { const char** p ; if ( ! elt || ! parent || ! parent->subelts ) return 0 ; for ( p = parent->subelts; *p; ++p ) if ( !xmlStrcmp((const xmlChar *)*p, elt) ) return 1 ; return 0 ; } /** * htmlElementStatusHere: * @parent: HTML parent element * @elt: HTML element * * Checks whether an HTML element may be a direct child of a parent element. * and if so whether it is valid or deprecated. * * Returns one of HTML_VALID, HTML_DEPRECATED, HTML_INVALID */ htmlStatus htmlElementStatusHere(const htmlElemDesc* parent, const htmlElemDesc* elt) { if ( ! parent || ! elt ) return HTML_INVALID ; if ( ! htmlElementAllowedHere(parent, (const xmlChar*) elt->name ) ) return HTML_INVALID ; return ( elt->dtd == 0 ) ? HTML_VALID : HTML_DEPRECATED ; } /** * htmlAttrAllowed: * @elt: HTML element * @attr: HTML attribute * @legacy: whether to allow deprecated attributes * * Checks whether an attribute is valid for an element * Has full knowledge of Required and Deprecated attributes * * Returns one of HTML_REQUIRED, HTML_VALID, HTML_DEPRECATED, HTML_INVALID */ htmlStatus htmlAttrAllowed(const htmlElemDesc* elt, const xmlChar* attr, int legacy) { const char** p ; if ( !elt || ! attr ) return HTML_INVALID ; if ( elt->attrs_req ) for ( p = elt->attrs_req; *p; ++p) if ( !xmlStrcmp((const xmlChar*)*p, attr) ) return HTML_REQUIRED ; if ( elt->attrs_opt ) for ( p = elt->attrs_opt; *p; ++p) if ( !xmlStrcmp((const xmlChar*)*p, attr) ) return HTML_VALID ; if ( legacy && elt->attrs_depr ) for ( p = elt->attrs_depr; *p; ++p) if ( !xmlStrcmp((const xmlChar*)*p, attr) ) return HTML_DEPRECATED ; return HTML_INVALID ; } /** * htmlNodeStatus: * @node: an htmlNodePtr in a tree * @legacy: whether to allow deprecated elements (YES is faster here * for Element nodes) * * Checks whether the tree node is valid. Experimental (the author * only uses the HTML enhancements in a SAX parser) * * Return: for Element nodes, a return from htmlElementAllowedHere (if * legacy allowed) or htmlElementStatusHere (otherwise). * for Attribute nodes, a return from htmlAttrAllowed * for other nodes, HTML_NA (no checks performed) */ htmlStatus htmlNodeStatus(const htmlNodePtr node, int legacy) { if ( ! node ) return HTML_INVALID ; switch ( node->type ) { case XML_ELEMENT_NODE: return legacy ? ( htmlElementAllowedHere ( htmlTagLookup(node->parent->name) , node->name ) ? HTML_VALID : HTML_INVALID ) : htmlElementStatusHere( htmlTagLookup(node->parent->name) , htmlTagLookup(node->name) ) ; case XML_ATTRIBUTE_NODE: return htmlAttrAllowed( htmlTagLookup(node->parent->name) , node->name, legacy) ; default: return HTML_NA ; } } /************************************************************************ * * * New set (2.6.0) of simpler and more flexible APIs * * * ************************************************************************/ /** * DICT_FREE: * @str: a string * * Free a string if it is not owned by the "dict" dictionary in the * current scope */ #define DICT_FREE(str) \ if ((str) && ((!dict) || \ (xmlDictOwns(dict, (const xmlChar *)(str)) == 0))) \ xmlFree((char *)(str)); /** * htmlCtxtReset: * @ctxt: an HTML parser context * * Reset a parser context */ void htmlCtxtReset(htmlParserCtxtPtr ctxt) { xmlParserInputPtr input; xmlDictPtr dict; if (ctxt == NULL) return; xmlInitParser(); dict = ctxt->dict; while ((input = inputPop(ctxt)) != NULL) { /* Non consuming */ xmlFreeInputStream(input); } ctxt->inputNr = 0; ctxt->input = NULL; ctxt->spaceNr = 0; if (ctxt->spaceTab != NULL) { ctxt->spaceTab[0] = -1; ctxt->space = &ctxt->spaceTab[0]; } else { ctxt->space = NULL; } ctxt->nodeNr = 0; ctxt->node = NULL; ctxt->nameNr = 0; ctxt->name = NULL; DICT_FREE(ctxt->version); ctxt->version = NULL; DICT_FREE(ctxt->encoding); ctxt->encoding = NULL; DICT_FREE(ctxt->directory); ctxt->directory = NULL; DICT_FREE(ctxt->extSubURI); ctxt->extSubURI = NULL; DICT_FREE(ctxt->extSubSystem); ctxt->extSubSystem = NULL; if (ctxt->myDoc != NULL) xmlFreeDoc(ctxt->myDoc); ctxt->myDoc = NULL; ctxt->standalone = -1; ctxt->hasExternalSubset = 0; ctxt->hasPErefs = 0; ctxt->html = 1; ctxt->external = 0; ctxt->instate = XML_PARSER_START; ctxt->token = 0; ctxt->wellFormed = 1; ctxt->nsWellFormed = 1; ctxt->disableSAX = 0; ctxt->valid = 1; ctxt->vctxt.userData = ctxt; ctxt->vctxt.error = xmlParserValidityError; ctxt->vctxt.warning = xmlParserValidityWarning; ctxt->record_info = 0; ctxt->checkIndex = 0; ctxt->inSubset = 0; ctxt->errNo = XML_ERR_OK; ctxt->depth = 0; ctxt->charset = XML_CHAR_ENCODING_NONE; ctxt->catalogs = NULL; xmlInitNodeInfoSeq(&ctxt->node_seq); if (ctxt->attsDefault != NULL) { xmlHashFree(ctxt->attsDefault, xmlHashDefaultDeallocator); ctxt->attsDefault = NULL; } if (ctxt->attsSpecial != NULL) { xmlHashFree(ctxt->attsSpecial, NULL); ctxt->attsSpecial = NULL; } } /** * htmlCtxtUseOptions: * @ctxt: an HTML parser context * @options: a combination of htmlParserOption(s) * * Applies the options to the parser context * * Returns 0 in case of success, the set of unknown or unimplemented options * in case of error. */ int htmlCtxtUseOptions(htmlParserCtxtPtr ctxt, int options) { if (ctxt == NULL) return(-1); if (options & HTML_PARSE_NOWARNING) { ctxt->sax->warning = NULL; ctxt->vctxt.warning = NULL; options -= XML_PARSE_NOWARNING; ctxt->options |= XML_PARSE_NOWARNING; } if (options & HTML_PARSE_NOERROR) { ctxt->sax->error = NULL; ctxt->vctxt.error = NULL; ctxt->sax->fatalError = NULL; options -= XML_PARSE_NOERROR; ctxt->options |= XML_PARSE_NOERROR; } if (options & HTML_PARSE_PEDANTIC) { ctxt->pedantic = 1; options -= XML_PARSE_PEDANTIC; ctxt->options |= XML_PARSE_PEDANTIC; } else ctxt->pedantic = 0; if (options & XML_PARSE_NOBLANKS) { ctxt->keepBlanks = 0; ctxt->sax->ignorableWhitespace = xmlSAX2IgnorableWhitespace; options -= XML_PARSE_NOBLANKS; ctxt->options |= XML_PARSE_NOBLANKS; } else ctxt->keepBlanks = 1; if (options & HTML_PARSE_RECOVER) { ctxt->recovery = 1; options -= HTML_PARSE_RECOVER; } else ctxt->recovery = 0; if (options & HTML_PARSE_COMPACT) { ctxt->options |= HTML_PARSE_COMPACT; options -= HTML_PARSE_COMPACT; } if (options & XML_PARSE_HUGE) { ctxt->options |= XML_PARSE_HUGE; options -= XML_PARSE_HUGE; } if (options & HTML_PARSE_NODEFDTD) { ctxt->options |= HTML_PARSE_NODEFDTD; options -= HTML_PARSE_NODEFDTD; } if (options & HTML_PARSE_IGNORE_ENC) { ctxt->options |= HTML_PARSE_IGNORE_ENC; options -= HTML_PARSE_IGNORE_ENC; } if (options & HTML_PARSE_NOIMPLIED) { ctxt->options |= HTML_PARSE_NOIMPLIED; options -= HTML_PARSE_NOIMPLIED; } ctxt->dictNames = 0; return (options); } /** * htmlDoRead: * @ctxt: an HTML parser context * @URL: the base URL to use for the document * @encoding: the document encoding, or NULL * @options: a combination of htmlParserOption(s) * @reuse: keep the context for reuse * * Common front-end for the htmlRead functions * * Returns the resulting document tree or NULL */ static htmlDocPtr htmlDoRead(htmlParserCtxtPtr ctxt, const char *URL, const char *encoding, int options, int reuse) { htmlDocPtr ret; htmlCtxtUseOptions(ctxt, options); ctxt->html = 1; if (encoding != NULL) { xmlCharEncodingHandlerPtr hdlr; hdlr = xmlFindCharEncodingHandler(encoding); if (hdlr != NULL) { xmlSwitchToEncoding(ctxt, hdlr); if (ctxt->input->encoding != NULL) xmlFree((xmlChar *) ctxt->input->encoding); ctxt->input->encoding = xmlStrdup((xmlChar *)encoding); } } if ((URL != NULL) && (ctxt->input != NULL) && (ctxt->input->filename == NULL)) ctxt->input->filename = (char *) xmlStrdup((const xmlChar *) URL); htmlParseDocument(ctxt); ret = ctxt->myDoc; ctxt->myDoc = NULL; if (!reuse) { if ((ctxt->dictNames) && (ret != NULL) && (ret->dict == ctxt->dict)) ctxt->dict = NULL; xmlFreeParserCtxt(ctxt); } return (ret); } /** * htmlReadDoc: * @cur: a pointer to a zero terminated string * @URL: the base URL to use for the document * @encoding: the document encoding, or NULL * @options: a combination of htmlParserOption(s) * * parse an XML in-memory document and build a tree. * * Returns the resulting document tree */ htmlDocPtr htmlReadDoc(const xmlChar * cur, const char *URL, const char *encoding, int options) { htmlParserCtxtPtr ctxt; if (cur == NULL) return (NULL); xmlInitParser(); ctxt = htmlCreateDocParserCtxt(cur, NULL); if (ctxt == NULL) return (NULL); return (htmlDoRead(ctxt, URL, encoding, options, 0)); } /** * htmlReadFile: * @filename: a file or URL * @encoding: the document encoding, or NULL * @options: a combination of htmlParserOption(s) * * parse an XML file from the filesystem or the network. * * Returns the resulting document tree */ htmlDocPtr htmlReadFile(const char *filename, const char *encoding, int options) { htmlParserCtxtPtr ctxt; xmlInitParser(); ctxt = htmlCreateFileParserCtxt(filename, encoding); if (ctxt == NULL) return (NULL); return (htmlDoRead(ctxt, NULL, NULL, options, 0)); } /** * htmlReadMemory: * @buffer: a pointer to a char array * @size: the size of the array * @URL: the base URL to use for the document * @encoding: the document encoding, or NULL * @options: a combination of htmlParserOption(s) * * parse an XML in-memory document and build a tree. * * Returns the resulting document tree */ htmlDocPtr htmlReadMemory(const char *buffer, int size, const char *URL, const char *encoding, int options) { htmlParserCtxtPtr ctxt; xmlInitParser(); ctxt = xmlCreateMemoryParserCtxt(buffer, size); if (ctxt == NULL) return (NULL); htmlDefaultSAXHandlerInit(); if (ctxt->sax != NULL) memcpy(ctxt->sax, &htmlDefaultSAXHandler, sizeof(xmlSAXHandlerV1)); return (htmlDoRead(ctxt, URL, encoding, options, 0)); } /** * htmlReadFd: * @fd: an open file descriptor * @URL: the base URL to use for the document * @encoding: the document encoding, or NULL * @options: a combination of htmlParserOption(s) * * parse an HTML from a file descriptor and build a tree. * NOTE that the file descriptor will not be closed when the * reader is closed or reset. * * Returns the resulting document tree */ htmlDocPtr htmlReadFd(int fd, const char *URL, const char *encoding, int options) { htmlParserCtxtPtr ctxt; xmlParserInputBufferPtr input; htmlParserInputPtr stream; if (fd < 0) return (NULL); xmlInitParser(); input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE); if (input == NULL) return (NULL); input->closecallback = NULL; ctxt = htmlNewParserCtxt(); if (ctxt == NULL) { xmlFreeParserInputBuffer(input); return (NULL); } stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE); if (stream == NULL) { xmlFreeParserInputBuffer(input); htmlFreeParserCtxt(ctxt); return (NULL); } inputPush(ctxt, stream); return (htmlDoRead(ctxt, URL, encoding, options, 0)); } /** * htmlReadIO: * @ioread: an I/O read function * @ioclose: an I/O close function * @ioctx: an I/O handler * @URL: the base URL to use for the document * @encoding: the document encoding, or NULL * @options: a combination of htmlParserOption(s) * * parse an HTML document from I/O functions and source and build a tree. * * Returns the resulting document tree */ htmlDocPtr htmlReadIO(xmlInputReadCallback ioread, xmlInputCloseCallback ioclose, void *ioctx, const char *URL, const char *encoding, int options) { htmlParserCtxtPtr ctxt; xmlParserInputBufferPtr input; xmlParserInputPtr stream; if (ioread == NULL) return (NULL); xmlInitParser(); input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx, XML_CHAR_ENCODING_NONE); if (input == NULL) { if (ioclose != NULL) ioclose(ioctx); return (NULL); } ctxt = htmlNewParserCtxt(); if (ctxt == NULL) { xmlFreeParserInputBuffer(input); return (NULL); } stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE); if (stream == NULL) { xmlFreeParserInputBuffer(input); xmlFreeParserCtxt(ctxt); return (NULL); } inputPush(ctxt, stream); return (htmlDoRead(ctxt, URL, encoding, options, 0)); } /** * htmlCtxtReadDoc: * @ctxt: an HTML parser context * @cur: a pointer to a zero terminated string * @URL: the base URL to use for the document * @encoding: the document encoding, or NULL * @options: a combination of htmlParserOption(s) * * parse an XML in-memory document and build a tree. * This reuses the existing @ctxt parser context * * Returns the resulting document tree */ htmlDocPtr htmlCtxtReadDoc(htmlParserCtxtPtr ctxt, const xmlChar * cur, const char *URL, const char *encoding, int options) { xmlParserInputPtr stream; if (cur == NULL) return (NULL); if (ctxt == NULL) return (NULL); xmlInitParser(); htmlCtxtReset(ctxt); stream = xmlNewStringInputStream(ctxt, cur); if (stream == NULL) { return (NULL); } inputPush(ctxt, stream); return (htmlDoRead(ctxt, URL, encoding, options, 1)); } /** * htmlCtxtReadFile: * @ctxt: an HTML parser context * @filename: a file or URL * @encoding: the document encoding, or NULL * @options: a combination of htmlParserOption(s) * * parse an XML file from the filesystem or the network. * This reuses the existing @ctxt parser context * * Returns the resulting document tree */ htmlDocPtr htmlCtxtReadFile(htmlParserCtxtPtr ctxt, const char *filename, const char *encoding, int options) { xmlParserInputPtr stream; if (filename == NULL) return (NULL); if (ctxt == NULL) return (NULL); xmlInitParser(); htmlCtxtReset(ctxt); stream = xmlLoadExternalEntity(filename, NULL, ctxt); if (stream == NULL) { return (NULL); } inputPush(ctxt, stream); return (htmlDoRead(ctxt, NULL, encoding, options, 1)); } /** * htmlCtxtReadMemory: * @ctxt: an HTML parser context * @buffer: a pointer to a char array * @size: the size of the array * @URL: the base URL to use for the document * @encoding: the document encoding, or NULL * @options: a combination of htmlParserOption(s) * * parse an XML in-memory document and build a tree. * This reuses the existing @ctxt parser context * * Returns the resulting document tree */ htmlDocPtr htmlCtxtReadMemory(htmlParserCtxtPtr ctxt, const char *buffer, int size, const char *URL, const char *encoding, int options) { xmlParserInputBufferPtr input; xmlParserInputPtr stream; if (ctxt == NULL) return (NULL); if (buffer == NULL) return (NULL); xmlInitParser(); htmlCtxtReset(ctxt); input = xmlParserInputBufferCreateMem(buffer, size, XML_CHAR_ENCODING_NONE); if (input == NULL) { return(NULL); } stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE); if (stream == NULL) { xmlFreeParserInputBuffer(input); return(NULL); } inputPush(ctxt, stream); return (htmlDoRead(ctxt, URL, encoding, options, 1)); } /** * htmlCtxtReadFd: * @ctxt: an HTML parser context * @fd: an open file descriptor * @URL: the base URL to use for the document * @encoding: the document encoding, or NULL * @options: a combination of htmlParserOption(s) * * parse an XML from a file descriptor and build a tree. * This reuses the existing @ctxt parser context * * Returns the resulting document tree */ htmlDocPtr htmlCtxtReadFd(htmlParserCtxtPtr ctxt, int fd, const char *URL, const char *encoding, int options) { xmlParserInputBufferPtr input; xmlParserInputPtr stream; if (fd < 0) return (NULL); if (ctxt == NULL) return (NULL); xmlInitParser(); htmlCtxtReset(ctxt); input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE); if (input == NULL) return (NULL); stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE); if (stream == NULL) { xmlFreeParserInputBuffer(input); return (NULL); } inputPush(ctxt, stream); return (htmlDoRead(ctxt, URL, encoding, options, 1)); } /** * htmlCtxtReadIO: * @ctxt: an HTML parser context * @ioread: an I/O read function * @ioclose: an I/O close function * @ioctx: an I/O handler * @URL: the base URL to use for the document * @encoding: the document encoding, or NULL * @options: a combination of htmlParserOption(s) * * parse an HTML document from I/O functions and source and build a tree. * This reuses the existing @ctxt parser context * * Returns the resulting document tree */ htmlDocPtr htmlCtxtReadIO(htmlParserCtxtPtr ctxt, xmlInputReadCallback ioread, xmlInputCloseCallback ioclose, void *ioctx, const char *URL, const char *encoding, int options) { xmlParserInputBufferPtr input; xmlParserInputPtr stream; if (ioread == NULL) return (NULL); if (ctxt == NULL) return (NULL); xmlInitParser(); htmlCtxtReset(ctxt); input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx, XML_CHAR_ENCODING_NONE); if (input == NULL) { if (ioclose != NULL) ioclose(ioctx); return (NULL); } stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE); if (stream == NULL) { xmlFreeParserInputBuffer(input); return (NULL); } inputPush(ctxt, stream); return (htmlDoRead(ctxt, URL, encoding, options, 1)); } #define bottom_HTMLparser #include "elfgcchack.h" #endif /* LIBXML_HTML_ENABLED */