| /* |
| * 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 <string.h> |
| #ifdef HAVE_CTYPE_H |
| #include <ctype.h> |
| #endif |
| #ifdef HAVE_STDLIB_H |
| #include <stdlib.h> |
| #endif |
| #ifdef HAVE_SYS_STAT_H |
| #include <sys/stat.h> |
| #endif |
| #ifdef HAVE_FCNTL_H |
| #include <fcntl.h> |
| #endif |
| #ifdef HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| #ifdef HAVE_ZLIB_H |
| #include <zlib.h> |
| #endif |
| |
| #include <libxml/xmlmemory.h> |
| #include <libxml/tree.h> |
| #include <libxml/parser.h> |
| #include <libxml/parserInternals.h> |
| #include <libxml/xmlerror.h> |
| #include <libxml/HTMLparser.h> |
| #include <libxml/HTMLtree.h> |
| #include <libxml/entities.h> |
| #include <libxml/encoding.h> |
| #include <libxml/valid.h> |
| #include <libxml/xmlIO.h> |
| #include <libxml/globals.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); |
| |
| /************************************************************************ |
| * * |
| * Parser stacks related functions and macros * |
| * * |
| ************************************************************************/ |
| |
| /* |
| * Generic function for accessing stacks in the Parser Context |
| */ |
| |
| #define PUSH_AND_POP(scope, type, name) \ |
| scope int html##name##Push(htmlParserCtxtPtr ctxt, type value) { \ |
| if (ctxt->name##Nr >= ctxt->name##Max) { \ |
| ctxt->name##Max *= 2; \ |
| ctxt->name##Tab = (type *) xmlRealloc(ctxt->name##Tab, \ |
| ctxt->name##Max * sizeof(ctxt->name##Tab[0])); \ |
| if (ctxt->name##Tab == NULL) { \ |
| xmlGenericError(xmlGenericErrorContext, \ |
| "realloc failed !\n"); \ |
| return(0); \ |
| } \ |
| } \ |
| ctxt->name##Tab[ctxt->name##Nr] = value; \ |
| ctxt->name = value; \ |
| return(ctxt->name##Nr++); \ |
| } \ |
| scope type html##name##Pop(htmlParserCtxtPtr ctxt) { \ |
| type ret; \ |
| if (ctxt->name##Nr < 0) return(0); \ |
| ctxt->name##Nr--; \ |
| if (ctxt->name##Nr < 0) return(0); \ |
| if (ctxt->name##Nr > 0) \ |
| ctxt->name = ctxt->name##Tab[ctxt->name##Nr - 1]; \ |
| else \ |
| ctxt->name = NULL; \ |
| ret = ctxt->name##Tab[ctxt->name##Nr]; \ |
| ctxt->name##Tab[ctxt->name##Nr] = 0; \ |
| return(ret); \ |
| } \ |
| |
| /* PUSH_AND_POP(static, xmlNodePtr, node) */ |
| PUSH_AND_POP(static, xmlChar*, name) |
| |
| /* |
| * 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 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. |
| * COPY(to) copy one char to *to, increment CUR_PTR and to accordingly |
| */ |
| |
| #define UPPER (toupper(*ctxt->input->cur)) |
| |
| #define SKIP(val) ctxt->nbChars += (val),ctxt->input->cur += (val) |
| |
| #define NXT(val) ctxt->input->cur[(val)] |
| |
| #define UPP(val) (toupper(ctxt->input->cur[(val)])) |
| |
| #define CUR_PTR ctxt->input->cur |
| |
| #define SHRINK xmlParserInputShrink(ctxt->input) |
| |
| #define GROW xmlParserInputGrow(ctxt->input, INPUT_CHUNK) |
| |
| #define CURRENT ((int) (*ctxt->input->cur)) |
| |
| #define SKIP_BLANKS htmlSkipBlankChars(ctxt) |
| |
| /* Inported from XML */ |
| |
| /* #define CUR (ctxt->token ? ctxt->token : (int) (*ctxt->input->cur)) */ |
| #define CUR ((int) (*ctxt->input->cur)) |
| #define NEXT xmlNextChar(ctxt),ctxt->nbChars++ |
| |
| #define RAW (ctxt->token ? -1 : (*ctxt->input->cur)) |
| #define NXT(val) ctxt->input->cur[(val)] |
| #define CUR_PTR 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; ctxt->nbChars++; \ |
| } 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) |
| |
| /** |
| * 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) { |
| if (ctxt->instate == XML_PARSER_EOF) |
| return(0); |
| |
| if (ctxt->token != 0) { |
| *len = 0; |
| return(ctxt->token); |
| } |
| if (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 |
| */ |
| const unsigned char *cur = ctxt->input->cur; |
| unsigned char c; |
| unsigned int val; |
| |
| c = *cur; |
| if (c & 0x80) { |
| if (cur[1] == 0) |
| xmlParserInputGrow(ctxt->input, INPUT_CHUNK); |
| if ((cur[1] & 0xc0) != 0x80) |
| goto encoding_error; |
| if ((c & 0xe0) == 0xe0) { |
| |
| if (cur[2] == 0) |
| xmlParserInputGrow(ctxt->input, INPUT_CHUNK); |
| if ((cur[2] & 0xc0) != 0x80) |
| goto encoding_error; |
| if ((c & 0xf0) == 0xf0) { |
| if (cur[3] == 0) |
| xmlParserInputGrow(ctxt->input, INPUT_CHUNK); |
| 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; |
| } else { |
| /* 3-byte code */ |
| *len = 3; |
| val = (cur[0] & 0xf) << 12; |
| val |= (cur[1] & 0x3f) << 6; |
| val |= cur[2] & 0x3f; |
| } |
| } else { |
| /* 2-byte code */ |
| *len = 2; |
| val = (cur[0] & 0x1f) << 6; |
| val |= cur[1] & 0x3f; |
| } |
| if (!IS_CHAR(val)) { |
| ctxt->errNo = XML_ERR_INVALID_ENCODING; |
| if ((ctxt->sax != NULL) && |
| (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "Char 0x%X out of allowed range\n", val); |
| ctxt->wellFormed = 0; |
| ctxt->disableSAX = 1; |
| } |
| return(val); |
| } else { |
| /* 1-byte code */ |
| *len = 1; |
| return((int) *ctxt->input->cur); |
| } |
| } |
| /* |
| * Assume it's a fixed length encoding (1) with |
| * a compatible encoding for the ASCII set, since |
| * XML constructs only use < 128 chars |
| */ |
| *len = 1; |
| if ((int) *ctxt->input->cur < 0x80) |
| return((int) *ctxt->input->cur); |
| |
| /* |
| * Humm this is bad, do an automatic flow conversion |
| */ |
| xmlSwitchEncoding(ctxt, XML_CHAR_ENCODING_8859_1); |
| ctxt->charset = XML_CHAR_ENCODING_UTF8; |
| return(xmlCurrentChar(ctxt, len)); |
| |
| encoding_error: |
| /* |
| * If we detect an UTF8 error that probably mean that the |
| * input encoding didn't get properly advertized 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 !) |
| */ |
| ctxt->errNo = XML_ERR_INVALID_ENCODING; |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) { |
| ctxt->sax->error(ctxt->userData, |
| "Input is not proper UTF-8, indicate encoding !\n"); |
| ctxt->sax->error(ctxt->userData, "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]); |
| } |
| |
| ctxt->charset = 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(*(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++; |
| ctxt->nbChars++; |
| 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 ommited |
| * End Tag: 1 means the end tag can be ommited |
| * 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 |
| */ |
| static const htmlElemDesc |
| html40ElementTable[] = { |
| { "a", 0, 0, 0, 0, 0, 0, 1, "anchor " }, |
| { "abbr", 0, 0, 0, 0, 0, 0, 1, "abbreviated form" }, |
| { "acronym", 0, 0, 0, 0, 0, 0, 1, "" }, |
| { "address", 0, 0, 0, 0, 0, 0, 0, "information on author " }, |
| { "applet", 0, 0, 0, 0, 1, 1, 2, "java applet " }, |
| { "area", 0, 2, 2, 1, 0, 0, 0, "client-side image map area " }, |
| { "b", 0, 3, 0, 0, 0, 0, 1, "bold text style" }, |
| { "base", 0, 2, 2, 1, 0, 0, 0, "document base uri " }, |
| { "basefont", 0, 2, 2, 1, 1, 1, 1, "base font size " }, |
| { "bdo", 0, 0, 0, 0, 0, 0, 1, "i18n bidi over-ride " }, |
| { "big", 0, 3, 0, 0, 0, 0, 1, "large text style" }, |
| { "blockquote", 0, 0, 0, 0, 0, 0, 0, "long quotation " }, |
| { "body", 1, 1, 0, 0, 0, 0, 0, "document body " }, |
| { "br", 0, 2, 2, 1, 0, 0, 1, "forced line break " }, |
| { "button", 0, 0, 0, 0, 0, 0, 2, "push button " }, |
| { "caption", 0, 0, 0, 0, 0, 0, 0, "table caption " }, |
| { "center", 0, 3, 0, 0, 1, 1, 0, "shorthand for div align=center " }, |
| { "cite", 0, 0, 0, 0, 0, 0, 1, "citation" }, |
| { "code", 0, 0, 0, 0, 0, 0, 1, "computer code fragment" }, |
| { "col", 0, 2, 2, 1, 0, 0, 0, "table column " }, |
| { "colgroup", 0, 1, 0, 0, 0, 0, 0, "table column group " }, |
| { "dd", 0, 1, 0, 0, 0, 0, 0, "definition description " }, |
| { "del", 0, 0, 0, 0, 0, 0, 2, "deleted text " }, |
| { "dfn", 0, 0, 0, 0, 0, 0, 1, "instance definition" }, |
| { "dir", 0, 0, 0, 0, 1, 1, 0, "directory list" }, |
| { "div", 0, 0, 0, 0, 0, 0, 0, "generic language/style container"}, |
| { "dl", 0, 0, 0, 0, 0, 0, 0, "definition list " }, |
| { "dt", 0, 1, 0, 0, 0, 0, 0, "definition term " }, |
| { "em", 0, 3, 0, 0, 0, 0, 1, "emphasis" }, |
| { "fieldset", 0, 0, 0, 0, 0, 0, 0, "form control group " }, |
| { "font", 0, 3, 0, 0, 1, 1, 1, "local change to font " }, |
| { "form", 0, 0, 0, 0, 0, 0, 0, "interactive form " }, |
| { "frame", 0, 2, 2, 1, 0, 2, 0, "subwindow " }, |
| { "frameset", 0, 0, 0, 0, 0, 2, 0, "window subdivision" }, |
| { "h1", 0, 0, 0, 0, 0, 0, 0, "heading " }, |
| { "h2", 0, 0, 0, 0, 0, 0, 0, "heading " }, |
| { "h3", 0, 0, 0, 0, 0, 0, 0, "heading " }, |
| { "h4", 0, 0, 0, 0, 0, 0, 0, "heading " }, |
| { "h5", 0, 0, 0, 0, 0, 0, 0, "heading " }, |
| { "h6", 0, 0, 0, 0, 0, 0, 0, "heading " }, |
| { "head", 1, 1, 0, 0, 0, 0, 0, "document head " }, |
| { "hr", 0, 2, 2, 1, 0, 0, 0, "horizontal rule " }, |
| { "html", 1, 1, 0, 0, 0, 0, 0, "document root element " }, |
| { "i", 0, 3, 0, 0, 0, 0, 1, "italic text style" }, |
| { "iframe", 0, 0, 0, 0, 0, 1, 2, "inline subwindow " }, |
| { "img", 0, 2, 2, 1, 0, 0, 1, "embedded image " }, |
| { "input", 0, 2, 2, 1, 0, 0, 1, "form control " }, |
| { "ins", 0, 0, 0, 0, 0, 0, 2, "inserted text" }, |
| { "isindex", 0, 2, 2, 1, 1, 1, 0, "single line prompt " }, |
| { "kbd", 0, 0, 0, 0, 0, 0, 1, "text to be entered by the user" }, |
| { "label", 0, 0, 0, 0, 0, 0, 1, "form field label text " }, |
| { "legend", 0, 0, 0, 0, 0, 0, 0, "fieldset legend " }, |
| { "li", 0, 1, 1, 0, 0, 0, 0, "list item " }, |
| { "link", 0, 2, 2, 1, 0, 0, 0, "a media-independent link " }, |
| { "map", 0, 0, 0, 0, 0, 0, 2, "client-side image map " }, |
| { "menu", 0, 0, 0, 0, 1, 1, 0, "menu list " }, |
| { "meta", 0, 2, 2, 1, 0, 0, 0, "generic metainformation " }, |
| { "noframes", 0, 0, 0, 0, 0, 2, 0, "alternate content container for non frame-based rendering " }, |
| { "noscript", 0, 0, 0, 0, 0, 0, 0, "alternate content container for non script-based rendering " }, |
| { "object", 0, 0, 0, 0, 0, 0, 2, "generic embedded object " }, |
| { "ol", 0, 0, 0, 0, 0, 0, 0, "ordered list " }, |
| { "optgroup", 0, 0, 0, 0, 0, 0, 0, "option group " }, |
| { "option", 0, 1, 0, 0, 0, 0, 0, "selectable choice " }, |
| { "p", 0, 1, 1, 0, 0, 0, 0, "paragraph " }, |
| { "param", 0, 2, 2, 1, 0, 0, 0, "named property value " }, |
| { "pre", 0, 0, 0, 0, 0, 0, 0, "preformatted text " }, |
| { "q", 0, 0, 0, 0, 0, 0, 1, "short inline quotation " }, |
| { "s", 0, 3, 0, 0, 1, 1, 1, "strike-through text style" }, |
| { "samp", 0, 0, 0, 0, 0, 0, 1, "sample program output, scripts, etc." }, |
| { "script", 0, 0, 0, 0, 0, 0, 2, "script statements " }, |
| { "select", 0, 0, 0, 0, 0, 0, 1, "option selector " }, |
| { "small", 0, 3, 0, 0, 0, 0, 1, "small text style" }, |
| { "span", 0, 0, 0, 0, 0, 0, 1, "generic language/style container " }, |
| { "strike", 0, 3, 0, 0, 1, 1, 1, "strike-through text" }, |
| { "strong", 0, 3, 0, 0, 0, 0, 1, "strong emphasis" }, |
| { "style", 0, 0, 0, 0, 0, 0, 0, "style info " }, |
| { "sub", 0, 3, 0, 0, 0, 0, 1, "subscript" }, |
| { "sup", 0, 3, 0, 0, 0, 0, 1, "superscript " }, |
| { "table", 0, 0, 0, 0, 0, 0, 0, " " }, |
| { "tbody", 1, 0, 0, 0, 0, 0, 0, "table body " }, |
| { "td", 0, 0, 0, 0, 0, 0, 0, "table data cell" }, |
| { "textarea", 0, 0, 0, 0, 0, 0, 1, "multi-line text field " }, |
| { "tfoot", 0, 1, 0, 0, 0, 0, 0, "table footer " }, |
| { "th", 0, 1, 0, 0, 0, 0, 0, "table header cell" }, |
| { "thead", 0, 1, 0, 0, 0, 0, 0, "table header " }, |
| { "title", 0, 0, 0, 0, 0, 0, 0, "document title " }, |
| { "tr", 0, 0, 0, 0, 0, 0, 0, "table row " }, |
| { "tt", 0, 3, 0, 0, 0, 0, 1, "teletype or monospaced text style" }, |
| { "u", 0, 3, 0, 0, 1, 1, 1, "underlined text style" }, |
| { "ul", 0, 0, 0, 0, 0, 0, 0, "unordered list " }, |
| { "var", 0, 0, 0, 0, 0, 0, 1, "instance of a variable or program argument" }, |
| }; |
| |
| /* |
| * start tags that imply the end of current element |
| */ |
| static const char *htmlStartClose[] = { |
| "form", "form", "p", "hr", "h1", "h2", "h3", "h4", "h5", "h6", |
| "dl", "ul", "ol", "menu", "dir", "address", "pre", |
| "listing", "xmp", "head", NULL, |
| "head", "p", NULL, |
| "title", "p", NULL, |
| "body", "head", "style", "link", "title", "p", NULL, |
| "li", "p", "h1", "h2", "h3", "h4", "h5", "h6", "dl", "address", |
| "pre", "listing", "xmp", "head", "li", NULL, |
| "hr", "p", "head", NULL, |
| "h1", "p", "head", NULL, |
| "h2", "p", "head", NULL, |
| "h3", "p", "head", NULL, |
| "h4", "p", "head", NULL, |
| "h5", "p", "head", NULL, |
| "h6", "p", "head", NULL, |
| "dir", "p", "head", NULL, |
| "address", "p", "head", "ul", NULL, |
| "pre", "p", "head", "ul", NULL, |
| "listing", "p", "head", NULL, |
| "xmp", "p", "head", NULL, |
| "blockquote", "p", "head", NULL, |
| "dl", "p", "dt", "menu", "dir", "address", "pre", "listing", |
| "xmp", "head", NULL, |
| "dt", "p", "menu", "dir", "address", "pre", "listing", "xmp", |
| "head", "dd", NULL, |
| "dd", "p", "menu", "dir", "address", "pre", "listing", "xmp", |
| "head", "dt", NULL, |
| "ul", "p", "head", "ol", "menu", "dir", "address", "pre", |
| "listing", "xmp", NULL, |
| "ol", "p", "head", "ul", NULL, |
| "menu", "p", "head", "ul", NULL, |
| "p", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6", NULL, |
| "div", "p", "head", NULL, |
| "noscript", "p", "head", NULL, |
| "center", "font", "b", "i", "p", "head", NULL, |
| "a", "a", NULL, |
| "caption", "p", NULL, |
| "colgroup", "caption", "colgroup", "col", "p", NULL, |
| "col", "caption", "col", "p", NULL, |
| "table", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6", "pre", |
| "listing", "xmp", "a", NULL, |
| "th", "th", "td", "p", "span", "font", "a", "b", "i", "u", NULL, |
| "td", "th", "td", "p", "span", "font", "a", "b", "i", "u", NULL, |
| "tr", "th", "td", "tr", "caption", "col", "colgroup", "p", NULL, |
| "thead", "caption", "col", "colgroup", NULL, |
| "tfoot", "th", "td", "tr", "caption", "col", "colgroup", "thead", |
| "tbody", "p", NULL, |
| "tbody", "th", "td", "tr", "caption", "col", "colgroup", "thead", |
| "tfoot", "tbody", "p", NULL, |
| "optgroup", "option", NULL, |
| "option", "option", NULL, |
| "fieldset", "legend", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6", |
| "pre", "listing", "xmp", "a", NULL, |
| NULL |
| }; |
| |
| /* |
| * 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 *htmlNoContentElements[] = { |
| "html", |
| "head", |
| "body", |
| 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 *htmlScriptAttributes[] = { |
| "onclick", |
| "ondblclick", |
| "onmousedown", |
| "onmouseup", |
| "onmouseover", |
| "onmousemove", |
| "onmouseout", |
| "onkeypress", |
| "onkeydown", |
| "onkeyup", |
| "onload", |
| "onunload", |
| "onfocus", |
| "onblur", |
| "onsubmit", |
| "onrest", |
| "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 */ |
| }; |
| |
| static const char** htmlStartCloseIndex[100]; |
| static int htmlStartCloseIndexinitialized = 0; |
| |
| /************************************************************************ |
| * * |
| * functions to handle HTML specific data * |
| * * |
| ************************************************************************/ |
| |
| /** |
| * htmlInitAutoClose: |
| * |
| * Initialize the htmlStartCloseIndex for fast lookup of closing tags names. |
| * This is not reentrant. Call xmlInitParser() once before processing in |
| * case of use in multithreaded programs. |
| */ |
| void |
| htmlInitAutoClose(void) { |
| int indx, i = 0; |
| |
| if (htmlStartCloseIndexinitialized) return; |
| |
| for (indx = 0;indx < 100;indx ++) htmlStartCloseIndex[indx] = NULL; |
| indx = 0; |
| while ((htmlStartClose[i] != NULL) && (indx < 100 - 1)) { |
| htmlStartCloseIndex[indx++] = &htmlStartClose[i]; |
| while (htmlStartClose[i] != NULL) i++; |
| i++; |
| } |
| htmlStartCloseIndexinitialized = 1; |
| } |
| |
| /** |
| * 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) { |
| unsigned int i; |
| |
| for (i = 0; i < (sizeof(html40ElementTable) / |
| sizeof(html40ElementTable[0]));i++) { |
| if (!xmlStrcasecmp(tag, BAD_CAST html40ElementTable[i].name)) |
| return((const htmlElemDescPtr) (const htmlElemDescPtr) (const htmlElemDescPtr) (const htmlElemDescPtr) (const htmlElemDescPtr) (const htmlElemDescPtr) (const htmlElemDescPtr) (const htmlElemDescPtr) (const htmlElemDescPtr) &html40ElementTable[i]); |
| } |
| return(NULL); |
| } |
| |
| /** |
| * 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); |
| } |
| |
| /** |
| * 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. |
| * Initialize the htmlStartCloseIndex for fast lookup of closing tags names. |
| * |
| * Returns 0 if no, 1 if yes. |
| */ |
| static int |
| htmlCheckAutoClose(const xmlChar *newtag, const xmlChar *oldtag) { |
| int i, indx; |
| const char **closed = NULL; |
| |
| if (htmlStartCloseIndexinitialized == 0) htmlInitAutoClose(); |
| |
| /* inefficient, but not a big deal */ |
| for (indx = 0; indx < 100;indx++) { |
| closed = htmlStartCloseIndex[indx]; |
| if (closed == NULL) return(0); |
| if (xmlStrEqual(BAD_CAST *closed, newtag)) break; |
| } |
| |
| i = closed - htmlStartClose; |
| i++; |
| while (htmlStartClose[i] != NULL) { |
| if (xmlStrEqual(BAD_CAST htmlStartClose[i], oldtag)) { |
| return(1); |
| } |
| i++; |
| } |
| return(0); |
| } |
| |
| /** |
| * 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; |
| xmlChar *oldname; |
| int i, priority; |
| |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"Close of %s stack: %d elements\n", newtag, ctxt->nameNr); |
| for (i = 0;i < ctxt->nameNr;i++) |
| xmlGenericError(xmlGenericErrorContext,"%d : %s\n", i, ctxt->nameTab[i]); |
| #endif |
| |
| priority = htmlGetEndPriority (newtag); |
| |
| for (i = (ctxt->nameNr - 1);i >= 0;i--) { |
| |
| if (xmlStrEqual(newtag, ctxt->nameTab[i])) break; |
| /* |
| * A missplaced 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 == 1)) { |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"htmlAutoCloseOnClose: %s closes %s\n", newtag, ctxt->name); |
| #endif |
| } else if (info->endTag == 3) { |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"End of tag %s: expecting %s\n", newtag, ctxt->name); |
| |
| #endif |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "Opening and ending tag mismatch: %s and %s\n", |
| newtag, ctxt->name); |
| ctxt->wellFormed = 0; |
| } |
| if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) |
| ctxt->sax->endElement(ctxt->userData, ctxt->name); |
| oldname = htmlnamePop(ctxt); |
| if (oldname != NULL) { |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"htmlAutoCloseOnClose: popped %s\n", oldname); |
| #endif |
| xmlFree(oldname); |
| } |
| } |
| } |
| |
| /** |
| * htmlAutoCloseOnEnd: |
| * @ctxt: an HTML parser context |
| * |
| * Close all remaining tags at the end of the stream |
| */ |
| static void |
| htmlAutoCloseOnEnd(htmlParserCtxtPtr ctxt) { |
| xmlChar *oldname; |
| int i; |
| |
| if (ctxt->nameNr == 0) |
| return; |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"Close of stack: %d elements\n", ctxt->nameNr); |
| #endif |
| |
| for (i = (ctxt->nameNr - 1);i >= 0;i--) { |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"%d : %s\n", i, ctxt->nameTab[i]); |
| #endif |
| if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) |
| ctxt->sax->endElement(ctxt->userData, ctxt->name); |
| oldname = htmlnamePop(ctxt); |
| if (oldname != NULL) { |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"htmlAutoCloseOnEnd: popped %s\n", oldname); |
| #endif |
| xmlFree(oldname); |
| } |
| } |
| } |
| |
| /** |
| * 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) { |
| xmlChar *oldname; |
| while ((newtag != NULL) && (ctxt->name != NULL) && |
| (htmlCheckAutoClose(newtag, ctxt->name))) { |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"htmlAutoClose: %s closes %s\n", newtag, ctxt->name); |
| #endif |
| if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) |
| ctxt->sax->endElement(ctxt->userData, ctxt->name); |
| oldname = htmlnamePop(ctxt); |
| if (oldname != NULL) { |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"htmlAutoClose: popped %s\n", oldname); |
| #endif |
| xmlFree(oldname); |
| } |
| } |
| 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")))) { |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"htmlAutoClose: EOF closes %s\n", ctxt->name); |
| #endif |
| if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) |
| ctxt->sax->endElement(ctxt->userData, ctxt->name); |
| oldname = htmlnamePop(ctxt); |
| if (oldname != NULL) { |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"htmlAutoClose: popped %s\n", oldname); |
| #endif |
| xmlFree(oldname); |
| } |
| } |
| |
| } |
| |
| /** |
| * 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) { |
| if (!htmlOmittedDefaultValue) |
| return; |
| if (xmlStrEqual(newtag, BAD_CAST"html")) |
| return; |
| if (ctxt->nameNr <= 0) { |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"Implied element html: pushed html\n"); |
| #endif |
| htmlnamePush(ctxt, xmlStrdup(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")))) { |
| /* |
| * dropped OBJECT ... i you put it first BODY will be |
| * assumed ! |
| */ |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"Implied element head: pushed head\n"); |
| #endif |
| htmlnamePush(ctxt, xmlStrdup(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"))) { |
| int i; |
| 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; |
| } |
| } |
| |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"Implied element body: pushed body\n"); |
| #endif |
| htmlnamePush(ctxt, xmlStrdup(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, xmlStrdup(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])) { |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"Implied element paragraph\n"); |
| #endif |
| htmlAutoClose(ctxt, BAD_CAST"p"); |
| htmlCheckImplied(ctxt, BAD_CAST"p"); |
| htmlnamePush(ctxt, xmlStrdup(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) { \ |
| buffer##_size *= 2; \ |
| buffer = (xmlChar *) xmlRealloc(buffer, buffer##_size * sizeof(xmlChar)); \ |
| if (buffer == NULL) { \ |
| xmlGenericError(xmlGenericErrorContext, "realloc failed\n"); \ |
| return(NULL); \ |
| } \ |
| } |
| |
| /** |
| * 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)) { |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"Found entity %s\n", name); |
| #endif |
| return((const 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; |
| #ifdef DEBUG |
| unsigned int lv = 0; |
| #endif |
| |
| for (i = 0;i < (sizeof(html40EntitiesTable)/ |
| sizeof(html40EntitiesTable[0]));i++) { |
| if (html40EntitiesTable[i].value >= value) { |
| if (html40EntitiesTable[i].value > value) |
| break; |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"Found entity %s\n", html40EntitiesTable[i].name); |
| #endif |
| return((const htmlEntityDescPtr) &html40EntitiesTable[i]); |
| } |
| #ifdef DEBUG |
| if (lv > html40EntitiesTable[i].value) { |
| xmlGenericError(xmlGenericErrorContext, |
| "html40EntitiesTable[] is not sorted (%d > %d)!\n", |
| lv, html40EntitiesTable[i].value); |
| } |
| lv = html40EntitiesTable[i].value; |
| #endif |
| } |
| 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 (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; |
| |
| /* |
| * Try to lookup a predefined HTML entity for it |
| */ |
| |
| ent = htmlEntityValueLookup(c); |
| if (ent == NULL) { |
| /* no chance for this in Ascii */ |
| *outlen = out - outstart; |
| *inlen = processed - instart; |
| return(-2); |
| } |
| len = strlen(ent->name); |
| if (out + 2 + len >= outend) |
| break; |
| *out++ = '&'; |
| memcpy(out, ent->name, 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 = out + (*outlen); |
| const unsigned char* outstart = out; |
| const unsigned char* instart = in; |
| const unsigned char* inend = in + (*inlen); |
| unsigned int c, d; |
| int trailing; |
| |
| 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); |
| } |
| |
| /** |
| * htmlDecodeEntities: |
| * @ctxt: the parser context |
| * @len: the len to decode (in bytes !), -1 for no size limit |
| * @end: an end marker xmlChar, 0 if none |
| * @end2: an end marker xmlChar, 0 if none |
| * @end3: an end marker xmlChar, 0 if none |
| * |
| * Substitute the HTML entities by their value |
| * |
| * DEPRECATED !!!! |
| * |
| * Returns A newly allocated string with the substitution done. The caller |
| * must deallocate it ! |
| */ |
| xmlChar * |
| htmlDecodeEntities(htmlParserCtxtPtr ctxt ATTRIBUTE_UNUSED, int len ATTRIBUTE_UNUSED, |
| xmlChar end ATTRIBUTE_UNUSED, xmlChar end2 ATTRIBUTE_UNUSED, xmlChar end3 ATTRIBUTE_UNUSED) { |
| static int deprecated = 0; |
| if (!deprecated) { |
| xmlGenericError(xmlGenericErrorContext, |
| "htmlDecodeEntities() deprecated function reached\n"); |
| deprecated = 1; |
| } |
| return(NULL); |
| } |
| |
| /************************************************************************ |
| * * |
| * Commodity functions to handle streams * |
| * * |
| ************************************************************************/ |
| |
| /** |
| * 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) { |
| ctxt->errNo = XML_ERR_NO_MEMORY; |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "malloc: 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); |
| } |
| |
| |
| /************************************************************************ |
| * * |
| * Commodity functions, cleanup needed ? * |
| * * |
| ************************************************************************/ |
| /* |
| * all tags allowing pc data from the html 4.01 loose dtd |
| * NOTE: it might be more apropriate to integrate this information |
| * into the html40ElementTable array but I don't want to risk any |
| * binary incomptibility |
| */ |
| 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; |
| |
| for (j = 0;j < len;j++) |
| if (!(IS_BLANK(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); |
| if (xmlStrEqual(ctxt->name, BAD_CAST"body")) |
| return(1); |
| if (ctxt->node == NULL) return(0); |
| lastChild = xmlGetLastChild(ctxt->node); |
| if (lastChild == NULL) { |
| if ((ctxt->node->type != XML_ELEMENT_NODE) && |
| (ctxt->node->content != NULL)) return(0); |
| /* keep ws in constructs like ...<b> </b>... |
| 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 <p><b>xy</b> <i>z</i><p> |
| 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) { |
| xmlGenericError(xmlGenericErrorContext, |
| "htmlNewDocNoDtD : malloc 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; |
| if ((ExternalID != NULL) || |
| (URI != NULL)) |
| xmlCreateIntSubset(cur, BAD_CAST "HTML", ExternalID, URI); |
| 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 * |
| * * |
| ************************************************************************/ |
| |
| /** |
| * 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 xmlChar * |
| htmlParseHTMLName(htmlParserCtxtPtr ctxt) { |
| xmlChar *ret = NULL; |
| int i = 0; |
| xmlChar loc[HTML_PARSER_BUFFER_SIZE]; |
| |
| if (!IS_LETTER(CUR) && (CUR != '_') && |
| (CUR != ':')) return(NULL); |
| |
| while ((i < HTML_PARSER_BUFFER_SIZE) && |
| ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) || |
| (CUR == ':') || (CUR == '-') || (CUR == '_'))) { |
| if ((CUR >= 'A') && (CUR <= 'Z')) loc[i] = CUR + 0x20; |
| else loc[i] = CUR; |
| i++; |
| |
| NEXT; |
| } |
| |
| ret = xmlStrndup(loc, i); |
| |
| return(ret); |
| } |
| |
| /** |
| * htmlParseName: |
| * @ctxt: an HTML parser context |
| * |
| * parse an HTML name, this routine is case sensitive. |
| * |
| * Returns the Name parsed or NULL |
| */ |
| |
| static xmlChar * |
| htmlParseName(htmlParserCtxtPtr ctxt) { |
| xmlChar buf[HTML_MAX_NAMELEN]; |
| int len = 0; |
| |
| GROW; |
| if (!IS_LETTER(CUR) && (CUR != '_')) { |
| return(NULL); |
| } |
| |
| while ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) || |
| (CUR == '.') || (CUR == '-') || |
| (CUR == '_') || (CUR == ':') || |
| (IS_COMBINING(CUR)) || |
| (IS_EXTENDER(CUR))) { |
| buf[len++] = CUR; |
| NEXT; |
| if (len >= HTML_MAX_NAMELEN) { |
| xmlGenericError(xmlGenericErrorContext, |
| "htmlParseName: reached HTML_MAX_NAMELEN limit\n"); |
| while ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) || |
| (CUR == '.') || (CUR == '-') || |
| (CUR == '_') || (CUR == ':') || |
| (IS_COMBINING(CUR)) || |
| (IS_EXTENDER(CUR))) |
| NEXT; |
| break; |
| } |
| } |
| return(xmlStrndup(buf, 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; |
| xmlChar *name = NULL; |
| |
| xmlChar *cur = NULL; |
| const htmlEntityDesc * ent; |
| |
| /* |
| * allocate a translation buffer. |
| */ |
| buffer_size = HTML_PARSER_BUFFER_SIZE; |
| buffer = (xmlChar *) xmlMalloc(buffer_size * sizeof(xmlChar)); |
| if (buffer == NULL) { |
| xmlGenericError(xmlGenericErrorContext, |
| "htmlParseHTMLAttribute: malloc 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(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; |
| } |
| } 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++; |
| } |
| xmlFree(name); |
| } else { |
| unsigned int c; |
| int bits; |
| |
| if (out - buffer > buffer_size - 100) { |
| int indx = out - buffer; |
| |
| growBuffer(buffer); |
| out = &buffer[indx]; |
| } |
| c = (xmlChar)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; |
| } |
| xmlFree(name); |
| } |
| } |
| } 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, xmlChar **str) { |
| xmlChar *name; |
| const htmlEntityDesc * ent = NULL; |
| *str = NULL; |
| |
| if (CUR == '&') { |
| NEXT; |
| name = htmlParseName(ctxt); |
| if (name == NULL) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "htmlParseEntityRef: no name\n"); |
| ctxt->wellFormed = 0; |
| } else { |
| GROW; |
| if (CUR == ';') { |
| *str = name; |
| |
| /* |
| * Lookup the entity in the table. |
| */ |
| ent = htmlEntityLookup(name); |
| if (ent != NULL) /* OK that's ugly !!! */ |
| NEXT; |
| } else { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "htmlParseEntityRef: expecting ';'\n"); |
| *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 != '"') { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "AttValue: ' expected\n"); |
| ctxt->wellFormed = 0; |
| } else |
| NEXT; |
| } else if (CUR == '\'') { |
| NEXT; |
| ret = htmlParseHTMLAttribute(ctxt, '\''); |
| if (CUR != '\'') { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "AttValue: ' expected\n"); |
| ctxt->wellFormed = 0; |
| } else |
| NEXT; |
| } else { |
| /* |
| * That's an HTMLism, the attribute value may not be quoted |
| */ |
| ret = htmlParseHTMLAttribute(ctxt, 0); |
| if (ret == NULL) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "AttValue: no value found\n"); |
| ctxt->wellFormed = 0; |
| } |
| } |
| 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) { |
| const xmlChar *q; |
| xmlChar *ret = NULL; |
| |
| if (CUR == '"') { |
| NEXT; |
| q = CUR_PTR; |
| while ((IS_CHAR(CUR)) && (CUR != '"')) |
| NEXT; |
| if (!IS_CHAR(CUR)) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "Unfinished SystemLiteral\n"); |
| ctxt->wellFormed = 0; |
| } else { |
| ret = xmlStrndup(q, CUR_PTR - q); |
| NEXT; |
| } |
| } else if (CUR == '\'') { |
| NEXT; |
| q = CUR_PTR; |
| while ((IS_CHAR(CUR)) && (CUR != '\'')) |
| NEXT; |
| if (!IS_CHAR(CUR)) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "Unfinished SystemLiteral\n"); |
| ctxt->wellFormed = 0; |
| } else { |
| ret = xmlStrndup(q, CUR_PTR - q); |
| NEXT; |
| } |
| } else { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "SystemLiteral \" or ' expected\n"); |
| ctxt->wellFormed = 0; |
| } |
| |
| 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) { |
| const xmlChar *q; |
| xmlChar *ret = NULL; |
| /* |
| * Name ::= (Letter | '_') (NameChar)* |
| */ |
| if (CUR == '"') { |
| NEXT; |
| q = CUR_PTR; |
| while (IS_PUBIDCHAR(CUR)) NEXT; |
| if (CUR != '"') { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "Unfinished PubidLiteral\n"); |
| ctxt->wellFormed = 0; |
| } else { |
| ret = xmlStrndup(q, CUR_PTR - q); |
| NEXT; |
| } |
| } else if (CUR == '\'') { |
| NEXT; |
| q = CUR_PTR; |
| while ((IS_LETTER(CUR)) && (CUR != '\'')) |
| NEXT; |
| if (!IS_LETTER(CUR)) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "Unfinished PubidLiteral\n"); |
| ctxt->wellFormed = 0; |
| } else { |
| ret = xmlStrndup(q, CUR_PTR - q); |
| NEXT; |
| } |
| } else { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "SystemLiteral \" or ' expected\n"); |
| ctxt->wellFormed = 0; |
| } |
| |
| 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 + 1]; |
| int nbchar = 0; |
| xmlChar cur; |
| |
| SHRINK; |
| cur = CUR; |
| while (IS_CHAR(cur)) { |
| if ((cur == '<') && (NXT(1) == '!') && (NXT(2) == '-') && |
| (NXT(3) == '-')) { |
| if ((nbchar != 0) && (ctxt->sax != NULL) && (!ctxt->disableSAX)) { |
| if (ctxt->sax->cdataBlock!= NULL) { |
| /* |
| * Insert as CDATA, which is the same as HTML_PRESERVE_NODE |
| */ |
| ctxt->sax->cdataBlock(ctxt->userData, buf, nbchar); |
| } |
| } |
| nbchar = 0; |
| htmlParseComment(ctxt); |
| cur = CUR; |
| continue; |
| } else if ((cur == '<') && (NXT(1) == '/')) { |
| /* |
| * One should break here, the specification is clear: |
| * Authors should therefore escape "</" within the content. |
| * Escape mechanisms are specific to each scripting or |
| * style sheet language. |
| */ |
| if (((NXT(2) >= 'A') && (NXT(2) <= 'Z')) || |
| ((NXT(2) >= 'a') && (NXT(2) <= 'z'))) |
| break; /* while */ |
| } |
| buf[nbchar++] = cur; |
| if (nbchar >= HTML_PARSER_BIG_BUFFER_SIZE) { |
| if (ctxt->sax->cdataBlock!= NULL) { |
| /* |
| * Insert as CDATA, which is the same as HTML_PRESERVE_NODE |
| */ |
| ctxt->sax->cdataBlock(ctxt->userData, buf, nbchar); |
| } |
| nbchar = 0; |
| } |
| NEXT; |
| cur = CUR; |
| } |
| if (!(IS_CHAR(cur))) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "Invalid char in CDATA 0x%X\n", cur); |
| ctxt->wellFormed = 0; |
| NEXT; |
| } |
| |
| if ((nbchar != 0) && (ctxt->sax != NULL) && (!ctxt->disableSAX)) { |
| if (ctxt->sax->cdataBlock!= NULL) { |
| /* |
| * Insert as CDATA, which is the same as HTML_PRESERVE_NODE |
| */ |
| ctxt->sax->cdataBlock(ctxt->userData, buf, nbchar); |
| } |
| } |
| } |
| |
| |
| /** |
| * 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) { |
| xmlChar buf[HTML_PARSER_BIG_BUFFER_SIZE + 5]; |
| int nbchar = 0; |
| int cur, l; |
| |
| SHRINK; |
| cur = CUR_CHAR(l); |
| while (((cur != '<') || (ctxt->token == '<')) && |
| ((cur != '&') || (ctxt->token == '&')) && |
| (IS_CHAR(cur))) { |
| COPY_BUF(l,buf,nbchar,cur); |
| if (nbchar >= HTML_PARSER_BIG_BUFFER_SIZE) { |
| /* |
| * Ok the segment is to be consumed as chars. |
| */ |
| if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) { |
| if (areBlanks(ctxt, buf, nbchar)) { |
| 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); |
| cur = CUR_CHAR(l); |
| } |
| if (nbchar != 0) { |
| /* |
| * Ok the segment is to be consumed as chars. |
| */ |
| if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) { |
| if (areBlanks(ctxt, buf, nbchar)) { |
| 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; |
| } |
| } |
| |
| /** |
| * 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(CUR)) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "Space required after 'SYSTEM'\n"); |
| ctxt->wellFormed = 0; |
| } |
| SKIP_BLANKS; |
| URI = htmlParseSystemLiteral(ctxt); |
| if (URI == NULL) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "htmlParseExternalID: SYSTEM, no URI\n"); |
| ctxt->wellFormed = 0; |
| } |
| } else if ((UPPER == 'P') && (UPP(1) == 'U') && |
| (UPP(2) == 'B') && (UPP(3) == 'L') && |
| (UPP(4) == 'I') && (UPP(5) == 'C')) { |
| SKIP(6); |
| if (!IS_BLANK(CUR)) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "Space required after 'PUBLIC'\n"); |
| ctxt->wellFormed = 0; |
| } |
| SKIP_BLANKS; |
| *publicID = htmlParsePubidLiteral(ctxt); |
| if (*publicID == NULL) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "htmlParseExternalID: PUBLIC, no Public Identifier\n"); |
| ctxt->wellFormed = 0; |
| } |
| SKIP_BLANKS; |
| if ((CUR == '"') || (CUR == '\'')) { |
| URI = htmlParseSystemLiteral(ctxt); |
| } |
| } |
| return(URI); |
| } |
| |
| /** |
| * htmlParseComment: |
| * @ctxt: an HTML parser context |
| * |
| * Parse an XML (SGML) comment <!-- .... --> |
| * |
| * [15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->' |
| */ |
| 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; |
| 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 *) xmlMalloc(size * sizeof(xmlChar)); |
| if (buf == NULL) { |
| xmlGenericError(xmlGenericErrorContext, |
| "malloc of %d byte failed\n", size); |
| ctxt->instate = state; |
| return; |
| } |
| q = CUR_CHAR(ql); |
| NEXTL(ql); |
| r = CUR_CHAR(rl); |
| NEXTL(rl); |
| cur = CUR_CHAR(l); |
| len = 0; |
| while (IS_CHAR(cur) && |
| ((cur != '>') || |
| (r != '-') || (q != '-'))) { |
| if (len + 5 >= size) { |
| size *= 2; |
| buf = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar)); |
| if (buf == NULL) { |
| xmlGenericError(xmlGenericErrorContext, |
| "realloc of %d byte failed\n", size); |
| ctxt->instate = state; |
| return; |
| } |
| } |
| COPY_BUF(ql,buf,len,q); |
| q = r; |
| ql = rl; |
| r = cur; |
| rl = l; |
| NEXTL(l); |
| cur = CUR_CHAR(l); |
| if (cur == 0) { |
| SHRINK; |
| GROW; |
| cur = CUR_CHAR(l); |
| } |
| } |
| buf[len] = 0; |
| if (!IS_CHAR(cur)) { |
| ctxt->errNo = XML_ERR_COMMENT_NOT_FINISHED; |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "Comment not terminated \n<!--%.50s\n", buf); |
| ctxt->wellFormed = 0; |
| xmlFree(buf); |
| } else { |
| NEXT; |
| if ((ctxt->sax != NULL) && (ctxt->sax->comment != NULL) && |
| (!ctxt->disableSAX)) |
| ctxt->sax->comment(ctxt->userData, buf); |
| xmlFree(buf); |
| } |
| ctxt->instate = state; |
| } |
| |
| /** |
| * htmlParseCharRef: |
| * @ctxt: an HTML parser context |
| * |
| * parse Reference declarations |
| * |
| * [66] CharRef ::= '&#' [0-9]+ ';' | |
| * '&#x' [0-9a-fA-F]+ ';' |
| * |
| * Returns the value parsed (as an int) |
| */ |
| int |
| htmlParseCharRef(htmlParserCtxtPtr ctxt) { |
| int val = 0; |
| |
| if ((CUR == '&') && (NXT(1) == '#') && |
| (NXT(2) == 'x')) { |
| SKIP(3); |
| while (CUR != ';') { |
| if ((CUR >= '0') && (CUR <= '9')) |
| val = val * 16 + (CUR - '0'); |
| else if ((CUR >= 'a') && (CUR <= 'f')) |
| val = val * 16 + (CUR - 'a') + 10; |
| else if ((CUR >= 'A') && (CUR <= 'F')) |
| val = val * 16 + (CUR - 'A') + 10; |
| else { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "htmlParseCharRef: invalid hexadecimal value\n"); |
| ctxt->wellFormed = 0; |
| return(0); |
| } |
| NEXT; |
| } |
| if (CUR == ';') |
| NEXT; |
| } else if ((CUR == '&') && (NXT(1) == '#')) { |
| SKIP(2); |
| while (CUR != ';') { |
| if ((CUR >= '0') && (CUR <= '9')) |
| val = val * 10 + (CUR - '0'); |
| else { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "htmlParseCharRef: invalid decimal value\n"); |
| ctxt->wellFormed = 0; |
| return(0); |
| } |
| NEXT; |
| } |
| if (CUR == ';') |
| NEXT; |
| } else { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "htmlParseCharRef: invalid value\n"); |
| ctxt->wellFormed = 0; |
| } |
| /* |
| * Check the value IS_CHAR ... |
| */ |
| if (IS_CHAR(val)) { |
| return(val); |
| } else { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "htmlParseCharRef: invalid xmlChar value %d\n", |
| val); |
| ctxt->wellFormed = 0; |
| } |
| return(0); |
| } |
| |
| |
| /** |
| * htmlParseDocTypeDecl : |
| * @ctxt: an HTML parser context |
| * |
| * parse a DOCTYPE declaration |
| * |
| * [28] doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S? |
| * ('[' (markupdecl | PEReference | S)* ']' S?)? '>' |
| */ |
| |
| static void |
| htmlParseDocTypeDecl(htmlParserCtxtPtr ctxt) { |
| xmlChar *name; |
| xmlChar *ExternalID = NULL; |
| xmlChar *URI = NULL; |
| |
| /* |
| * We know that '<!DOCTYPE' has been detected. |
| */ |
| SKIP(9); |
| |
| SKIP_BLANKS; |
| |
| /* |
| * Parse the DOCTYPE name. |
| */ |
| name = htmlParseName(ctxt); |
| if (name == NULL) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "htmlParseDocTypeDecl : no DOCTYPE name !\n"); |
| ctxt->wellFormed = 0; |
| } |
| /* |
| * Check that upper(name) == "HTML" !!!!!!!!!!!!! |
| */ |
| |
| SKIP_BLANKS; |
| |
| /* |
| * Check for SystemID and ExternalID |
| */ |
| URI = htmlParseExternalID(ctxt, &ExternalID); |
| SKIP_BLANKS; |
| |
| /* |
| * We should be at the end of the DOCTYPE declaration. |
| */ |
| if (CUR != '>') { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "DOCTYPE improperly terminated\n"); |
| ctxt->wellFormed = 0; |
| /* We shouldn't try to resynchronize ... */ |
| } |
| NEXT; |
| |
| /* |
| * Create or update the document accordingly to the DOCTYPE |
| */ |
| if ((ctxt->sax != NULL) && (ctxt->sax->internalSubset != NULL) && |
| (!ctxt->disableSAX)) |
| ctxt->sax->internalSubset(ctxt->userData, name, ExternalID, URI); |
| |
| /* |
| * Cleanup, since we don't use all those identifiers |
| */ |
| if (URI != NULL) xmlFree(URI); |
| if (ExternalID != NULL) xmlFree(ExternalID); |
| if (name != NULL) xmlFree(name); |
| } |
| |
| /** |
| * htmlParseAttribute: |
| * @ctxt: an HTML parser context |
| * @value: a xmlChar ** used to store the value of the attribute |
| * |
| * parse an attribute |
| * |
| * [41] Attribute ::= Name Eq AttValue |
| * |
| * [25] Eq ::= S? '=' S? |
| * |
| * With namespace: |
| * |
| * [NS 11] Attribute ::= QName Eq AttValue |
| * |
| * Also the case QName == xmlns:??? is handled independently as a namespace |
| * definition. |
| * |
| * Returns the attribute name, and the value in *value. |
| */ |
| |
| static xmlChar * |
| htmlParseAttribute(htmlParserCtxtPtr ctxt, xmlChar **value) { |
| xmlChar *name, *val = NULL; |
| |
| *value = NULL; |
| name = htmlParseHTMLName(ctxt); |
| if (name == NULL) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "error parsing attribute name\n"); |
| ctxt->wellFormed = 0; |
| return(NULL); |
| } |
| |
| /* |
| * read the value |
| */ |
| SKIP_BLANKS; |
| if (CUR == '=') { |
| NEXT; |
| SKIP_BLANKS; |
| val = htmlParseAttValue(ctxt); |
| /****** |
| } else { |
| * TODO : some attribute must have values, some may not |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->warning(ctxt->userData, |
| "No value for attribute %s\n", name); */ |
| } |
| |
| *value = val; |
| return(name); |
| } |
| |
| /** |
| * htmlCheckEncoding: |
| * @ctxt: an HTML parser context |
| * @attvalue: the attribute value |
| * |
| * Checks an http-equiv attribute from a Meta tag to detect |
| * the encoding |
| * If a new encoding is detected the parser is switched to decode |
| * it and pass UTF8 |
| */ |
| static void |
| htmlCheckEncoding(htmlParserCtxtPtr ctxt, const xmlChar *attvalue) { |
| const xmlChar *encoding; |
| |
| if ((ctxt == NULL) || (attvalue == NULL)) |
| return; |
| |
| /* do not change encoding */ |
| if (ctxt->input->encoding != NULL) |
| return; |
| |
| encoding = xmlStrcasestr(attvalue, BAD_CAST"charset="); |
| if (encoding != NULL) { |
| encoding += 8; |
| } else { |
| encoding = xmlStrcasestr(attvalue, BAD_CAST"charset ="); |
| if (encoding != NULL) |
| encoding += 9; |
| } |
| if (encoding != NULL) { |
| xmlCharEncoding enc; |
| xmlCharEncodingHandlerPtr handler; |
| |
| while ((*encoding == ' ') || (*encoding == '\t')) encoding++; |
| |
| if (ctxt->input->encoding != NULL) |
| xmlFree((xmlChar *) ctxt->input->encoding); |
| ctxt->input->encoding = xmlStrdup(encoding); |
| |
| enc = xmlParseCharEncoding((const char *) encoding); |
| /* |
| * registered set of known encodings |
| */ |
| if (enc != XML_CHAR_ENCODING_ERROR) { |
| xmlSwitchEncoding(ctxt, enc); |
| ctxt->charset = XML_CHAR_ENCODING_UTF8; |
| } else { |
| /* |
| * fallback for unknown encodings |
| */ |
| handler = xmlFindCharEncodingHandler((const char *) encoding); |
| if (handler != NULL) { |
| xmlSwitchToEncoding(ctxt, handler); |
| ctxt->charset = XML_CHAR_ENCODING_UTF8; |
| } else { |
| ctxt->errNo = XML_ERR_UNSUPPORTED_ENCODING; |
| } |
| } |
| |
| if ((ctxt->input->buf != NULL) && |
| (ctxt->input->buf->encoder != NULL) && |
| (ctxt->input->buf->raw != NULL) && |
| (ctxt->input->buf->buffer != NULL)) { |
| int nbchars; |
| int processed; |
| |
| /* |
| * convert as much as possible to the parser reading buffer. |
| */ |
| processed = ctxt->input->cur - ctxt->input->base; |
| xmlBufferShrink(ctxt->input->buf->buffer, processed); |
| nbchars = xmlCharEncInFunc(ctxt->input->buf->encoder, |
| ctxt->input->buf->buffer, |
| ctxt->input->buf->raw); |
| if (nbchars < 0) { |
| ctxt->errNo = XML_ERR_INVALID_ENCODING; |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "htmlCheckEncoding: encoder error\n"); |
| } |
| ctxt->input->base = |
| ctxt->input->cur = ctxt->input->buf->buffer->content; |
| } |
| } |
| } |
| |
| /** |
| * htmlCheckMeta: |
| * @ctxt: an HTML parser context |
| * @atts: the attributes values |
| * |
| * Checks an attributes from a Meta tag |
| */ |
| static void |
| htmlCheckMeta(htmlParserCtxtPtr ctxt, const xmlChar **atts) { |
| int i; |
| const xmlChar *att, *value; |
| int http = 0; |
| const xmlChar *content = NULL; |
| |
| if ((ctxt == NULL) || (atts == NULL)) |
| return; |
| |
| i = 0; |
| att = atts[i++]; |
| while (att != NULL) { |
| value = atts[i++]; |
| if ((value != NULL) && (!xmlStrcasecmp(att, BAD_CAST"http-equiv")) |
| && (!xmlStrcasecmp(value, BAD_CAST"Content-Type"))) |
| http = 1; |
| else if ((value != NULL) && (!xmlStrcasecmp(att, BAD_CAST"content"))) |
| content = value; |
| att = atts[i++]; |
| } |
| if ((http) && (content != NULL)) |
| htmlCheckEncoding(ctxt, content); |
| |
| } |
| |
| /** |
| * htmlParseStartTag: |
| * @ctxt: an HTML parser context |
| * |
| * parse a start of tag either for rule element or |
| * EmptyElement. In both case we don't parse the tag closing chars. |
| * |
| * [40] STag ::= '<' Name (S Attribute)* S? '>' |
| * |
| * [44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>' |
| * |
| * With namespace: |
| * |
| * [NS 8] STag ::= '<' QName (S Attribute)* S? '>' |
| * |
| * [NS 10] EmptyElement ::= '<' QName (S Attribute)* S? '/>' |
| * |
| */ |
| |
| static void |
| htmlParseStartTag(htmlParserCtxtPtr ctxt) { |
| xmlChar *name; |
| xmlChar *attname; |
| xmlChar *attvalue; |
| const xmlChar **atts = NULL; |
| int nbatts = 0; |
| int maxatts = 0; |
| int meta = 0; |
| int i; |
| |
| if (CUR != '<') return; |
| NEXT; |
| |
| GROW; |
| name = htmlParseHTMLName(ctxt); |
| if (name == NULL) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "htmlParseStartTag: invalid element name\n"); |
| ctxt->wellFormed = 0; |
| /* Dump the bogus tag like browsers do */ |
| while ((IS_CHAR(CUR)) && (CUR != '>')) |
| NEXT; |
| return; |
| } |
| if (xmlStrEqual(name, BAD_CAST"meta")) |
| meta = 1; |
| |
| /* |
| * Check for auto-closure of HTML elements. |
| */ |
| htmlAutoClose(ctxt, name); |
| |
| /* |
| * Check for implied HTML elements. |
| */ |
| htmlCheckImplied(ctxt, name); |
| |
| /* |
| * Avoid html at any level > 0, head at any level != 1 |
| * or any attempt to recurse body |
| */ |
| if ((ctxt->nameNr > 0) && (xmlStrEqual(name, BAD_CAST"html"))) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "htmlParseStartTag: misplaced <html> tag\n"); |
| ctxt->wellFormed = 0; |
| xmlFree(name); |
| return; |
| } |
| if ((ctxt->nameNr != 1) && |
| (xmlStrEqual(name, BAD_CAST"head"))) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "htmlParseStartTag: misplaced <head> tag\n"); |
| ctxt->wellFormed = 0; |
| xmlFree(name); |
| return; |
| } |
| if (xmlStrEqual(name, BAD_CAST"body")) { |
| int indx; |
| for (indx = 0;indx < ctxt->nameNr;indx++) { |
| if (xmlStrEqual(ctxt->nameTab[indx], BAD_CAST"body")) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "htmlParseStartTag: misplaced <body> tag\n"); |
| ctxt->wellFormed = 0; |
| xmlFree(name); |
| return; |
| } |
| } |
| } |
| |
| /* |
| * Now parse the attributes, it ends up with the ending |
| * |
| * (S Attribute)* S? |
| */ |
| SKIP_BLANKS; |
| while ((IS_CHAR(CUR)) && |
| (CUR != '>') && |
| ((CUR != '/') || (NXT(1) != '>'))) { |
| long cons = ctxt->nbChars; |
| |
| GROW; |
| attname = htmlParseAttribute(ctxt, &attvalue); |
| if (attname != NULL) { |
| |
| /* |
| * Well formedness requires at most one declaration of an attribute |
| */ |
| for (i = 0; i < nbatts;i += 2) { |
| if (xmlStrEqual(atts[i], attname)) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "Attribute %s redefined\n", |
| attname); |
| ctxt->wellFormed = 0; |
| xmlFree(attname); |
| if (attvalue != NULL) |
| xmlFree(attvalue); |
| goto failed; |
| } |
| } |
| |
| /* |
| * Add the pair to atts |
| */ |
| if (atts == NULL) { |
| maxatts = 10; |
| atts = (const xmlChar **) xmlMalloc(maxatts * sizeof(xmlChar *)); |
| if (atts == NULL) { |
| xmlGenericError(xmlGenericErrorContext, |
| "malloc of %ld byte failed\n", |
| maxatts * (long)sizeof(xmlChar *)); |
| if (name != NULL) xmlFree(name); |
| return; |
| } |
| } else if (nbatts + 4 > maxatts) { |
| maxatts *= 2; |
| atts = (const xmlChar **) xmlRealloc((void *) atts, |
| maxatts * sizeof(xmlChar *)); |
| if (atts == NULL) { |
| xmlGenericError(xmlGenericErrorContext, |
| "realloc of %ld byte failed\n", |
| maxatts * (long)sizeof(xmlChar *)); |
| if (name != NULL) xmlFree(name); |
| return; |
| } |
| } |
| atts[nbatts++] = attname; |
| atts[nbatts++] = attvalue; |
| atts[nbatts] = NULL; |
| atts[nbatts + 1] = NULL; |
| } |
| else { |
| /* Dump the bogus attribute string up to the next blank or |
| * the end of the tag. */ |
| while ((IS_CHAR(CUR)) && !(IS_BLANK(CUR)) && (CUR != '>') |
| && ((CUR != '/') || (NXT(1) != '>'))) |
| NEXT; |
| } |
| |
| failed: |
| SKIP_BLANKS; |
| if (cons == ctxt->nbChars) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "htmlParseStartTag: problem parsing attributes\n"); |
| ctxt->wellFormed = 0; |
| break; |
| } |
| } |
| |
| /* |
| * Handle specific association to the META tag |
| */ |
| if (meta) |
| htmlCheckMeta(ctxt, atts); |
| |
| /* |
| * SAX: Start of Element ! |
| */ |
| htmlnamePush(ctxt, xmlStrdup(name)); |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"Start of element %s: pushed %s\n", name, ctxt->name); |
| #endif |
| if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL)) |
| ctxt->sax->startElement(ctxt->userData, name, atts); |
| |
| if (atts != NULL) { |
| for (i = 0;i < nbatts;i++) { |
| if (atts[i] != NULL) |
| xmlFree((xmlChar *) atts[i]); |
| } |
| xmlFree((void *) atts); |
| } |
| if (name != NULL) xmlFree(name); |
| } |
| |
| /** |
| * htmlParseEndTag: |
| * @ctxt: an HTML parser context |
| * |
| * parse an end of tag |
| * |
| * [42] ETag ::= '</' Name S? '>' |
| * |
| * With namespace |
| * |
| * [NS 9] ETag ::= '</' QName S? '>' |
| * |
| * Returns 1 if the current level should be closed. |
| */ |
| |
| static int |
| htmlParseEndTag(htmlParserCtxtPtr ctxt) { |
| xmlChar *name; |
| xmlChar *oldname; |
| int i, ret; |
| |
| if ((CUR != '<') || (NXT(1) != '/')) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "htmlParseEndTag: '</' not found\n"); |
| ctxt->wellFormed = 0; |
| return(0); |
| } |
| SKIP(2); |
| |
| name = htmlParseHTMLName(ctxt); |
| if (name == NULL) return(0); |
| |
| /* |
| * We should definitely be at the ending "S? '>'" part |
| */ |
| SKIP_BLANKS; |
| if ((!IS_CHAR(CUR)) || (CUR != '>')) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "End tag : expected '>'\n"); |
| ctxt->wellFormed = 0; |
| } else |
| NEXT; |
| |
| /* |
| * If the name read is not one of the element in the parsing stack |
| * then return, it's just an error. |
| */ |
| for (i = (ctxt->nameNr - 1);i >= 0;i--) { |
| if (xmlStrEqual(name, ctxt->nameTab[i])) break; |
| } |
| if (i < 0) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "Unexpected end tag : %s\n", name); |
| xmlFree(name); |
| ctxt->wellFormed = 0; |
| return(0); |
| } |
| |
| |
| /* |
| * Check for auto-closure of HTML elements. |
| */ |
| |
| htmlAutoCloseOnClose(ctxt, name); |
| |
| /* |
| * Well formedness constraints, opening and closing must match. |
| * With the exception that the autoclose may have popped stuff out |
| * of the stack. |
| */ |
| if (!xmlStrEqual(name, ctxt->name)) { |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"End of tag %s: expecting %s\n", name, ctxt->name); |
| #endif |
| if ((ctxt->name != NULL) && |
| (!xmlStrEqual(ctxt->name, name))) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "Opening and ending tag mismatch: %s and %s\n", |
| name, ctxt->name); |
| ctxt->wellFormed = 0; |
| } |
| } |
| |
| /* |
| * SAX: End of Tag |
| */ |
| oldname = ctxt->name; |
| if ((oldname != NULL) && (xmlStrEqual(oldname, name))) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL)) |
| ctxt->sax->endElement(ctxt->userData, name); |
| oldname = htmlnamePop(ctxt); |
| if (oldname != NULL) { |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"End of tag %s: popping out %s\n", name, oldname); |
| #endif |
| xmlFree(oldname); |
| #ifdef DEBUG |
| } else { |
| xmlGenericError(xmlGenericErrorContext,"End of tag %s: stack empty !!!\n", name); |
| #endif |
| } |
| ret = 1; |
| } else { |
| ret = 0; |
| } |
| |
| if (name != NULL) |
| xmlFree(name); |
| |
| return(ret); |
| } |
| |
| |
| /** |
| * htmlParseReference: |
| * @ctxt: an HTML parser context |
| * |
| * parse and handle entity references in content, |
| * this will end-up in a call to character() since this is either a |
| * CharRef, or a predefined entity. |
| */ |
| static void |
| htmlParseReference(htmlParserCtxtPtr ctxt) { |
| const htmlEntityDesc * ent; |
| xmlChar out[6]; |
| xmlChar *name; |
| if (CUR != '&') return; |
| |
| if (NXT(1) == '#') { |
| unsigned int c; |
| int bits, i = 0; |
| |
| c = htmlParseCharRef(ctxt); |
| if (c == 0) |
| return; |
| |
| if (c < 0x80) { out[i++]= c; bits= -6; } |
| else if (c < 0x800) { out[i++]=((c >> 6) & 0x1F) | 0xC0; bits= 0; } |
| else if (c < 0x10000) { out[i++]=((c >> 12) & 0x0F) | 0xE0; bits= 6; } |
| else { out[i++]=((c >> 18) & 0x07) | 0xF0; bits= 12; } |
| |
| for ( ; bits >= 0; bits-= 6) { |
| out[i++]= ((c >> bits) & 0x3F) | 0x80; |
| } |
| out[i] = 0; |
| |
| htmlCheckParagraph(ctxt); |
| if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL)) |
| ctxt->sax->characters(ctxt->userData, out, i); |
| } else { |
| ent = htmlParseEntityRef(ctxt, &name); |
| if (name == NULL) { |
| htmlCheckParagraph(ctxt); |
| if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL)) |
| ctxt->sax->characters(ctxt->userData, BAD_CAST "&", 1); |
| return; |
| } |
| if ((ent == NULL) || (ent->value <= 0)) { |
| htmlCheckParagraph(ctxt); |
| if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL)) { |
| ctxt->sax->characters(ctxt->userData, BAD_CAST "&", 1); |
| ctxt->sax->characters(ctxt->userData, name, xmlStrlen(name)); |
| /* ctxt->sax->characters(ctxt->userData, BAD_CAST ";", 1); */ |
| } |
| } else { |
| unsigned int c; |
| int bits, i = 0; |
| |
| c = ent->value; |
| if (c < 0x80) |
| { out[i++]= c; bits= -6; } |
| else if (c < 0x800) |
| { out[i++]=((c >> 6) & 0x1F) | 0xC0; bits= 0; } |
| else if (c < 0x10000) |
| { out[i++]=((c >> 12) & 0x0F) | 0xE0; bits= 6; } |
| else |
| { out[i++]=((c >> 18) & 0x07) | 0xF0; bits= 12; } |
| |
| for ( ; bits >= 0; bits-= 6) { |
| out[i++]= ((c >> bits) & 0x3F) | 0x80; |
| } |
| out[i] = 0; |
| |
| htmlCheckParagraph(ctxt); |
| if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL)) |
| ctxt->sax->characters(ctxt->userData, out, i); |
| } |
| xmlFree(name); |
| } |
| } |
| |
| /** |
| * htmlParseContent: |
| * @ctxt: an HTML parser context |
| * @name: the node name |
| * |
| * Parse a content: comment, sub-element, reference or text. |
| * |
| */ |
| |
| static void |
| htmlParseContent(htmlParserCtxtPtr ctxt) { |
| xmlChar *currentNode; |
| int depth; |
| |
| currentNode = xmlStrdup(ctxt->name); |
| depth = ctxt->nameNr; |
| while (1) { |
| long cons = ctxt->nbChars; |
| |
| GROW; |
| /* |
| * Our tag or one of it's parent or children is ending. |
| */ |
| if ((CUR == '<') && (NXT(1) == '/')) { |
| if (htmlParseEndTag(ctxt) && |
| ((currentNode != NULL) || (ctxt->nameNr == 0))) { |
| if (currentNode != NULL) |
| xmlFree(currentNode); |
| return; |
| } |
| continue; /* while */ |
| } |
| |
| /* |
| * Has this node been popped out during parsing of |
| * the next element |
| */ |
| if ((ctxt->nameNr > 0) && (depth >= ctxt->nameNr) && |
| (!xmlStrEqual(currentNode, ctxt->name))) |
| { |
| if (currentNode != NULL) xmlFree(currentNode); |
| return; |
| } |
| |
| if ((CUR != 0) && ((xmlStrEqual(currentNode, BAD_CAST"script")) || |
| (xmlStrEqual(currentNode, BAD_CAST"style")))) { |
| /* |
| * Handle SCRIPT/STYLE separately |
| */ |
| htmlParseScript(ctxt); |
| } else { |
| /* |
| * Sometimes DOCTYPE arrives in the middle of the document |
| */ |
| if ((CUR == '<') && (NXT(1) == '!') && |
| (UPP(2) == 'D') && (UPP(3) == 'O') && |
| (UPP(4) == 'C') && (UPP(5) == 'T') && |
| (UPP(6) == 'Y') && (UPP(7) == 'P') && |
| (UPP(8) == 'E')) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "Misplaced DOCTYPE declaration\n"); |
| ctxt->wellFormed = 0; |
| htmlParseDocTypeDecl(ctxt); |
| } |
| |
| /* |
| * First case : a comment |
| */ |
| if ((CUR == '<') && (NXT(1) == '!') && |
| (NXT(2) == '-') && (NXT(3) == '-')) { |
| htmlParseComment(ctxt); |
| } |
| |
| /* |
| * Second case : a sub-element. |
| */ |
| else if (CUR == '<') { |
| htmlParseElement(ctxt); |
| } |
| |
| /* |
| * Third case : a reference. If if has not been resolved, |
| * parsing returns it's Name, create the node |
| */ |
| else if (CUR == '&') { |
| htmlParseReference(ctxt); |
| } |
| |
| /* |
| * Fourth : end of the resource |
| */ |
| else if (CUR == 0) { |
| htmlAutoCloseOnEnd(ctxt); |
| break; |
| } |
| |
| /* |
| * Last case, text. Note that References are handled directly. |
| */ |
| else { |
| htmlParseCharData(ctxt); |
| } |
| |
| if (cons == ctxt->nbChars) { |
| if (ctxt->node != NULL) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "detected an error in element content\n"); |
| ctxt->wellFormed = 0; |
| } |
| break; |
| } |
| } |
| GROW; |
| } |
| if (currentNode != NULL) xmlFree(currentNode); |
| } |
| |
| /** |
| * htmlParseElement: |
| * @ctxt: an HTML parser context |
| * |
| * parse an HTML element, this is highly recursive |
| * |
| * [39] element ::= EmptyElemTag | STag content ETag |
| * |
| * [41] Attribute ::= Name Eq AttValue |
| */ |
| |
| void |
| htmlParseElement(htmlParserCtxtPtr ctxt) { |
| xmlChar *name; |
| xmlChar *currentNode = NULL; |
| const htmlElemDesc * info; |
| htmlParserNodeInfo node_info; |
| xmlChar *oldname; |
| int depth = ctxt->nameNr; |
| const xmlChar *oldptr; |
| |
| /* 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; |
| } |
| |
| oldname = xmlStrdup(ctxt->name); |
| htmlParseStartTag(ctxt); |
| name = ctxt->name; |
| #ifdef DEBUG |
| if (oldname == NULL) |
| xmlGenericError(xmlGenericErrorContext, |
| "Start of element %s\n", name); |
| else if (name == NULL) |
| xmlGenericError(xmlGenericErrorContext, |
| "Start of element failed, was %s\n", oldname); |
| else |
| xmlGenericError(xmlGenericErrorContext, |
| "Start of element %s, was %s\n", name, oldname); |
| #endif |
| if (((depth == ctxt->nameNr) && (xmlStrEqual(oldname, ctxt->name))) || |
| (name == NULL)) { |
| if (CUR == '>') |
| NEXT; |
| if (oldname != NULL) |
| xmlFree(oldname); |
| return; |
| } |
| if (oldname != NULL) |
| xmlFree(oldname); |
| |
| /* |
| * Lookup the info for that element. |
| */ |
| info = htmlTagLookup(name); |
| if (info == NULL) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "Tag %s invalid\n", |
| name); |
| ctxt->wellFormed = 0; |
| } else if (info->depr) { |
| /*************************** |
| if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL)) |
| ctxt->sax->warning(ctxt->userData, "Tag %s is deprecated\n", |
| name); |
| ***************************/ |
| } |
| |
| /* |
| * 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); |
| oldname = htmlnamePop(ctxt); |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"End of tag the XML way: popping out %s\n", oldname); |
| #endif |
| if (oldname != NULL) |
| xmlFree(oldname); |
| return; |
| } |
| |
| if (CUR == '>') { |
| NEXT; |
| } else { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "Couldn't find end of Start Tag %s\n", |
| name); |
| ctxt->wellFormed = 0; |
| |
| /* |
| * end of parsing of this node. |
| */ |
| if (xmlStrEqual(name, ctxt->name)) { |
| nodePop(ctxt); |
| oldname = htmlnamePop(ctxt); |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"End of start tag problem: popping out %s\n", oldname); |
| #endif |
| if (oldname != NULL) |
| xmlFree(oldname); |
| } |
| |
| /* |
| * Capture end position and add node |
| */ |
| if ( currentNode != NULL && ctxt->record_info ) { |
| node_info.end_pos = ctxt->input->consumed + |
| (CUR_PTR - ctxt->input->base); |
| node_info.end_line = ctxt->input->line; |
| node_info.node = ctxt->node; |
| xmlParserAddNodeInfo(ctxt, &node_info); |
| } |
| return; |
| } |
| |
| /* |
| * 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); |
| oldname = htmlnamePop(ctxt); |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"End of empty tag %s : popping out %s\n", name, oldname); |
| #endif |
| if (oldname != NULL) |
| xmlFree(oldname); |
| return; |
| } |
| |
| /* |
| * Parse the content of the element: |
| */ |
| currentNode = xmlStrdup(ctxt->name); |
| depth = ctxt->nameNr; |
| while (IS_CHAR(CUR)) { |
| oldptr = ctxt->input->cur; |
| htmlParseContent(ctxt); |
| if (oldptr==ctxt->input->cur) break; |
| if (ctxt->nameNr < depth) break; |
| } |
| |
| /* |
| * Capture end position and add node |
| */ |
| if ( currentNode != NULL && ctxt->record_info ) { |
| node_info.end_pos = ctxt->input->consumed + |
| (CUR_PTR - ctxt->input->base); |
| node_info.end_line = ctxt->input->line; |
| node_info.node = ctxt->node; |
| xmlParserAddNodeInfo(ctxt, &node_info); |
| } |
| if (!IS_CHAR(CUR)) { |
| htmlAutoCloseOnEnd(ctxt); |
| } |
| |
| if (currentNode != NULL) |
| xmlFree(currentNode); |
| } |
| |
| /** |
| * htmlParseDocument : |
| * @ctxt: an HTML parser context |
| * |
| * parse an HTML document (and build a tree if using the standard SAX |
| * interface). |
| * |
| * Returns 0, -1 in case of error. the parser context is augmented |
| * as a result of the parsing. |
| */ |
| |
| int |
| htmlParseDocument(htmlParserCtxtPtr ctxt) { |
| xmlDtdPtr dtd; |
| |
| xmlInitParser(); |
| |
| htmlDefaultSAXHandlerInit(); |
| ctxt->html = 1; |
| |
| GROW; |
| /* |
| * SAX: beginning of the document processing. |
| */ |
| if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) |
| ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator); |
| |
| /* |
| * Wipe out everything which is before the first '<' |
| */ |
| SKIP_BLANKS; |
| if (CUR == 0) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "Document is empty\n"); |
| ctxt->wellFormed = 0; |
| } |
| |
| if ((ctxt->sax) && (ctxt->sax->startDocument) && (!ctxt->disableSAX)) |
| ctxt->sax->startDocument(ctxt->userData); |
| |
| |
| /* |
| * Parse possible comments before any content |
| */ |
| while ((CUR == '<') && (NXT(1) == '!') && |
| (NXT(2) == '-') && (NXT(3) == '-')) { |
| htmlParseComment(ctxt); |
| SKIP_BLANKS; |
| } |
| |
| |
| /* |
| * Then possibly doc type declaration(s) and more Misc |
| * (doctypedecl Misc*)? |
| */ |
| if ((CUR == '<') && (NXT(1) == '!') && |
| (UPP(2) == 'D') && (UPP(3) == 'O') && |
| (UPP(4) == 'C') && (UPP(5) == 'T') && |
| (UPP(6) == 'Y') && (UPP(7) == 'P') && |
| (UPP(8) == 'E')) { |
| htmlParseDocTypeDecl(ctxt); |
| } |
| SKIP_BLANKS; |
| |
| /* |
| * Parse possible comments before any content |
| */ |
| while ((CUR == '<') && (NXT(1) == '!') && |
| (NXT(2) == '-') && (NXT(3) == '-')) { |
| htmlParseComment(ctxt); |
| SKIP_BLANKS; |
| } |
| |
| /* |
| * Time to start parsing the tree itself |
| */ |
| htmlParseContent(ctxt); |
| |
| /* |
| * autoclose |
| */ |
| if (CUR == 0) |
| htmlAutoCloseOnEnd(ctxt); |
| |
| |
| /* |
| * SAX: end of the document processing. |
| */ |
| if ((ctxt->sax) && (ctxt->sax->endDocument != NULL)) |
| ctxt->sax->endDocument(ctxt->userData); |
| |
| if (ctxt->myDoc != NULL) { |
| 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"); |
| } |
| if (! ctxt->wellFormed) return(-1); |
| return(0); |
| } |
| |
| |
| /************************************************************************ |
| * * |
| * Parser contexts handling * |
| * * |
| ************************************************************************/ |
| |
| /** |
| * xmlInitParserCtxt: |
| * @ctxt: an HTML parser context |
| * |
| * Initialize a parser context |
| */ |
| |
| static void |
| htmlInitParserCtxt(htmlParserCtxtPtr ctxt) |
| { |
| htmlSAXHandler *sax; |
| |
| if (ctxt == NULL) return; |
| memset(ctxt, 0, sizeof(htmlParserCtxt)); |
| |
| sax = (htmlSAXHandler *) xmlMalloc(sizeof(htmlSAXHandler)); |
| if (sax == NULL) { |
| xmlGenericError(xmlGenericErrorContext, |
| "htmlInitParserCtxt: out of memory\n"); |
| } |
| else |
| memset(sax, 0, sizeof(htmlSAXHandler)); |
| |
| /* Allocate the Input stack */ |
| ctxt->inputTab = (htmlParserInputPtr *) |
| xmlMalloc(5 * sizeof(htmlParserInputPtr)); |
| if (ctxt->inputTab == NULL) { |
| xmlGenericError(xmlGenericErrorContext, |
| "htmlInitParserCtxt: out of memory\n"); |
| ctxt->inputNr = 0; |
| ctxt->inputMax = 0; |
| ctxt->input = NULL; |
| return; |
| } |
| ctxt->inputNr = 0; |
| ctxt->inputMax = 5; |
| ctxt->input = NULL; |
| ctxt->version = NULL; |
| ctxt->encoding = NULL; |
| ctxt->standalone = -1; |
| ctxt->instate = XML_PARSER_START; |
| |
| /* Allocate the Node stack */ |
| ctxt->nodeTab = (htmlNodePtr *) xmlMalloc(10 * sizeof(htmlNodePtr)); |
| if (ctxt->nodeTab == NULL) { |
| xmlGenericError(xmlGenericErrorContext, |
| "htmlInitParserCtxt: out of memory\n"); |
| ctxt->nodeNr = 0; |
| ctxt->nodeMax = 0; |
| ctxt->node = NULL; |
| ctxt->inputNr = 0; |
| ctxt->inputMax = 0; |
| ctxt->input = NULL; |
| return; |
| } |
| ctxt->nodeNr = 0; |
| ctxt->nodeMax = 10; |
| ctxt->node = NULL; |
| |
| /* Allocate the Name stack */ |
| ctxt->nameTab = (xmlChar **) xmlMalloc(10 * sizeof(xmlChar *)); |
| if (ctxt->nameTab == NULL) { |
| xmlGenericError(xmlGenericErrorContext, |
| "htmlInitParserCtxt: out of memory\n"); |
| ctxt->nameNr = 0; |
| ctxt->nameMax = 10; |
| ctxt->name = NULL; |
| ctxt->nodeNr = 0; |
| ctxt->nodeMax = 0; |
| ctxt->node = NULL; |
| ctxt->inputNr = 0; |
| ctxt->inputMax = 0; |
| ctxt->input = NULL; |
| return; |
| } |
| ctxt->nameNr = 0; |
| ctxt->nameMax = 10; |
| ctxt->name = NULL; |
| |
| if (sax == NULL) ctxt->sax = &htmlDefaultSAXHandler; |
| else { |
| ctxt->sax = sax; |
| memcpy(sax, &htmlDefaultSAXHandler, sizeof(htmlSAXHandler)); |
| } |
| ctxt->userData = ctxt; |
| ctxt->myDoc = NULL; |
| ctxt->wellFormed = 1; |
| ctxt->replaceEntities = 0; |
| ctxt->linenumbers = xmlLineNumbersDefaultValue; |
| ctxt->html = 1; |
| ctxt->record_info = 0; |
| ctxt->validate = 0; |
| ctxt->nbChars = 0; |
| ctxt->checkIndex = 0; |
| ctxt->catalogs = NULL; |
| xmlInitNodeInfoSeq(&ctxt->node_seq); |
| } |
| |
| /** |
| * htmlFreeParserCtxt: |
| * @ctxt: an HTML parser context |
| * |
| * Free all the memory used by a parser context. However the parsed |
| * document in ctxt->myDoc is not freed. |
| */ |
| |
| void |
| htmlFreeParserCtxt(htmlParserCtxtPtr ctxt) |
| { |
| xmlFreeParserCtxt(ctxt); |
| } |
| |
| /** |
| * htmlNewParserCtxt: |
| * |
| * Allocate and initialize a new parser context. |
| * |
| * Returns the xmlParserCtxtPtr or NULL |
| */ |
| |
| static htmlParserCtxtPtr |
| htmlNewParserCtxt(void) |
| { |
| xmlParserCtxtPtr ctxt; |
| |
| ctxt = (xmlParserCtxtPtr) xmlMalloc(sizeof(xmlParserCtxt)); |
| if (ctxt == NULL) { |
| xmlGenericError(xmlGenericErrorContext, |
| "xmlNewParserCtxt : cannot allocate context\n"); |
| return(NULL); |
| } |
| memset(ctxt, 0, sizeof(xmlParserCtxt)); |
| htmlInitParserCtxt(ctxt); |
| return(ctxt); |
| } |
| |
| /** |
| * htmlCreateMemoryParserCtxt: |
| * @buffer: a pointer to a char array |
| * @size: the size of the array |
| * |
| * Create a parser context for an HTML in-memory document. |
| * |
| * Returns the new parser context or NULL |
| */ |
| static htmlParserCtxtPtr |
| htmlCreateMemoryParserCtxt(const char *buffer, int size) { |
| xmlParserCtxtPtr ctxt; |
| xmlParserInputPtr input; |
| xmlParserInputBufferPtr buf; |
| |
| if (buffer == NULL) |
| return(NULL); |
| if (size <= 0) |
| return(NULL); |
| |
| ctxt = htmlNewParserCtxt(); |
| if (ctxt == NULL) |
| return(NULL); |
| |
| buf = xmlParserInputBufferCreateMem(buffer, size, XML_CHAR_ENCODING_NONE); |
| if (buf == NULL) return(NULL); |
| |
| input = xmlNewInputStream(ctxt); |
| if (input == NULL) { |
| xmlFreeParserCtxt(ctxt); |
| return(NULL); |
| } |
| |
| input->filename = NULL; |
| input->buf = buf; |
| input->base = input->buf->buffer->content; |
| input->cur = input->buf->buffer->content; |
| input->end = &input->buf->buffer->content[input->buf->buffer->use]; |
| |
| inputPush(ctxt, input); |
| return(ctxt); |
| } |
| |
| /** |
| * htmlCreateDocParserCtxt : |
| * @cur: a pointer to an array of xmlChar |
| * @encoding: a free form C string describing the HTML document encoding, or NULL |
| * |
| * Create a parser context for an HTML document. |
| * |
| * TODO: check the need to add encoding handling there |
| * |
| * Returns the new parser context or NULL |
| */ |
| static htmlParserCtxtPtr |
| htmlCreateDocParserCtxt(xmlChar *cur, const char *encoding ATTRIBUTE_UNUSED) { |
| int len; |
| |
| if (cur == NULL) |
| return(NULL); |
| len = xmlStrlen(cur); |
| return(htmlCreateMemoryParserCtxt((char *)cur, len)); |
| } |
| |
| /************************************************************************ |
| * * |
| * Progressive parsing interfaces * |
| * * |
| ************************************************************************/ |
| |
| /** |
| * htmlParseLookupSequence: |
| * @ctxt: an HTML parser context |
| * @first: the first char to lookup |
| * @next: the next char to lookup or zero |
| * @third: the next char to lookup or zero |
| * |
| * Try to find if a sequence (first, next, third) or just (first next) or |
| * (first) is available in the input stream. |
| * 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 is basically similar to xmlParseLookupSequence() |
| * |
| * Returns the index to the current parsing point if the full sequence |
| * is available, -1 otherwise. |
| */ |
| static int |
| htmlParseLookupSequence(htmlParserCtxtPtr ctxt, xmlChar first, |
| xmlChar next, xmlChar third) { |
| int base, len; |
| htmlParserInputPtr in; |
| const xmlChar *buf; |
| int incomment = 0; |
| |
| in = ctxt->input; |
| if (in == NULL) return(-1); |
| base = in->cur - in->base; |
| if (base < 0) return(-1); |
| if (ctxt->checkIndex > base) |
| base = ctxt->checkIndex; |
| if (in->buf == NULL) { |
| buf = in->base; |
| len = in->length; |
| } else { |
| buf = in->buf->buffer->content; |
| len = in->buf->buffer->use; |
| } |
| /* take into account the sequence length */ |
| if (third) len -= 2; |
| else if (next) len --; |
| for (;base < len;base++) { |
| if (!incomment && (base + 4 < len)) { |
| if ((buf[base] == '<') && (buf[base + 1] == '!') && |
| (buf[base + 2] == '-') && (buf[base + 3] == '-')) { |
| incomment = 1; |
| } |
| /* do not increment base, some people use <!--> */ |
| } |
| if (incomment) { |
| if (base + 3 < len) |
| return(-1); |
| if ((buf[base] == '-') && (buf[base + 1] == '-') && |
| (buf[base + 2] == '>')) { |
| incomment = 0; |
| base += 2; |
| } |
| continue; |
| } |
| if (buf[base] == first) { |
| if (third != 0) { |
| if ((buf[base + 1] != next) || |
| (buf[base + 2] != third)) continue; |
| } else if (next != 0) { |
| if (buf[base + 1] != next) continue; |
| } |
| ctxt->checkIndex = 0; |
| #ifdef DEBUG_PUSH |
| if (next == 0) |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: lookup '%c' found at %d\n", |
| first, base); |
| else if (third == 0) |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: lookup '%c%c' found at %d\n", |
| first, next, base); |
| else |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: lookup '%c%c%c' found at %d\n", |
| first, next, third, base); |
| #endif |
| return(base - (in->cur - in->base)); |
| } |
| } |
| ctxt->checkIndex = base; |
| #ifdef DEBUG_PUSH |
| if (next == 0) |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: lookup '%c' failed\n", first); |
| else if (third == 0) |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: lookup '%c%c' failed\n", first, next); |
| else |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: lookup '%c%c%c' failed\n", first, next, third); |
| #endif |
| return(-1); |
| } |
| |
| /** |
| * 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; |
| int avail = 0; |
| xmlChar cur, next; |
| |
| #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 = in->buf->buffer->use - (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; |
| 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(cur)) { |
| SKIP_BLANKS; |
| if (in->buf == NULL) |
| avail = in->length - (in->cur - in->base); |
| else |
| avail = in->buf->buffer->use - (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) < 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 = in->buf->buffer->use - (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) && |
| (htmlParseLookupSequence(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 == '!') && |
| (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) < 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_START_TAG; |
| #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 = in->buf->buffer->use - (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) && |
| (htmlParseLookupSequence(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 == '!') && |
| (avail < 4)) { |
| goto done; |
| } else { |
| ctxt->instate = XML_PARSER_START_TAG; |
| #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 = in->buf->buffer->use - (in->cur - in->base); |
| if (avail < 1) |
| goto done; |
| cur = in->cur[0]; |
| if (IS_BLANK(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) && |
| (htmlParseLookupSequence(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 == '!') && |
| (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: { |
| xmlChar *name, *oldname; |
| int depth = ctxt->nameNr; |
| const htmlElemDesc * info; |
| |
| if (avail < 2) |
| goto done; |
| cur = in->cur[0]; |
| if (cur != '<') { |
| ctxt->instate = XML_PARSER_CONTENT; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: entering CONTENT\n"); |
| #endif |
| break; |
| } |
| if (in->cur[1] == '/') { |
| 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) < 0)) |
| goto done; |
| |
| oldname = xmlStrdup(ctxt->name); |
| htmlParseStartTag(ctxt); |
| name = ctxt->name; |
| #ifdef DEBUG |
| if (oldname == NULL) |
| xmlGenericError(xmlGenericErrorContext, |
| "Start of element %s\n", name); |
| else if (name == NULL) |
| xmlGenericError(xmlGenericErrorContext, |
| "Start of element failed, was %s\n", |
| oldname); |
| else |
| xmlGenericError(xmlGenericErrorContext, |
| "Start of element %s, was %s\n", |
| name, oldname); |
| #endif |
| if (((depth == ctxt->nameNr) && |
| (xmlStrEqual(oldname, ctxt->name))) || |
| (name == NULL)) { |
| if (CUR == '>') |
| NEXT; |
| if (oldname != NULL) |
| xmlFree(oldname); |
| break; |
| } |
| if (oldname != NULL) |
| xmlFree(oldname); |
| |
| /* |
| * Lookup the info for that element. |
| */ |
| info = htmlTagLookup(name); |
| if (info == NULL) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, "Tag %s invalid\n", |
| name); |
| ctxt->wellFormed = 0; |
| } else if (info->depr) { |
| /*************************** |
| if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL)) |
| ctxt->sax->warning(ctxt->userData, |
| "Tag %s is deprecated\n", |
| name); |
| ***************************/ |
| } |
| |
| /* |
| * 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); |
| oldname = htmlnamePop(ctxt); |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"End of tag the XML way: popping out %s\n", |
| oldname); |
| #endif |
| if (oldname != NULL) |
| xmlFree(oldname); |
| ctxt->instate = XML_PARSER_CONTENT; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: entering CONTENT\n"); |
| #endif |
| break; |
| } |
| |
| if (CUR == '>') { |
| NEXT; |
| } else { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "Couldn't find end of Start Tag %s\n", |
| name); |
| ctxt->wellFormed = 0; |
| |
| /* |
| * end of parsing of this node. |
| */ |
| if (xmlStrEqual(name, ctxt->name)) { |
| nodePop(ctxt); |
| oldname = htmlnamePop(ctxt); |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext, |
| "End of start tag problem: popping out %s\n", oldname); |
| #endif |
| if (oldname != NULL) |
| xmlFree(oldname); |
| } |
| |
| 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); |
| oldname = htmlnamePop(ctxt); |
| #ifdef DEBUG |
| xmlGenericError(xmlGenericErrorContext,"End of empty tag %s : popping out %s\n", name, oldname); |
| #endif |
| if (oldname != NULL) |
| xmlFree(oldname); |
| } |
| ctxt->instate = XML_PARSER_CONTENT; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: entering CONTENT\n"); |
| #endif |
| break; |
| } |
| case XML_PARSER_CONTENT: { |
| long cons; |
| /* |
| * Handle preparsed entities and charRef |
| */ |
| if (ctxt->token != 0) { |
| xmlChar chr[2] = { 0 , 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) { |
| if (IS_BLANK(cur)) { |
| if (ctxt->sax->ignorableWhitespace != NULL) |
| ctxt->sax->ignorableWhitespace( |
| ctxt->userData, &cur, 1); |
| } else { |
| htmlCheckParagraph(ctxt); |
| if (ctxt->sax->characters != NULL) |
| ctxt->sax->characters( |
| ctxt->userData, &cur, 1); |
| } |
| } |
| ctxt->token = 0; |
| ctxt->checkIndex = 0; |
| NEXT; |
| break; |
| } |
| } |
| if (avail < 2) |
| goto done; |
| cur = in->cur[0]; |
| next = in->cur[1]; |
| cons = ctxt->nbChars; |
| if ((xmlStrEqual(ctxt->name, BAD_CAST"script")) || |
| (xmlStrEqual(ctxt->name, BAD_CAST"style"))) { |
| /* |
| * Handle SCRIPT/STYLE separately |
| */ |
| if ((!terminate) && |
| (htmlParseLookupSequence(ctxt, '<', '/', 0) < 0)) |
| 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) < 0)) |
| goto done; |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "Misplaced DOCTYPE declaration\n"); |
| ctxt->wellFormed = 0; |
| htmlParseDocTypeDecl(ctxt); |
| } else if ((cur == '<') && (next == '!') && |
| (in->cur[2] == '-') && (in->cur[3] == '-')) { |
| if ((!terminate) && |
| (htmlParseLookupSequence(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 == '!') && (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 == '<') { |
| ctxt->instate = XML_PARSER_START_TAG; |
| ctxt->checkIndex = 0; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: entering START_TAG\n"); |
| #endif |
| break; |
| } else if (cur == '&') { |
| if ((!terminate) && |
| (htmlParseLookupSequence(ctxt, ';', 0, 0) < 0)) |
| goto done; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: Parsing Reference\n"); |
| #endif |
| /* TODO: check generation of subtrees if noent !!! */ |
| htmlParseReference(ctxt); |
| } else { |
| /* TODO Avoid the extra copy, handle directly !!!!!! */ |
| /* |
| * Goal of the following test is : |
| * - minimize calls to the SAX 'character' callback |
| * when they are mergeable |
| */ |
| if ((ctxt->inputNr == 1) && |
| (avail < HTML_PARSER_BIG_BUFFER_SIZE)) { |
| if ((!terminate) && |
| (htmlParseLookupSequence(ctxt, '<', 0, 0) < 0)) |
| goto done; |
| } |
| ctxt->checkIndex = 0; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: Parsing char data\n"); |
| #endif |
| htmlParseCharData(ctxt); |
| } |
| } |
| if (cons == ctxt->nbChars) { |
| if (ctxt->node != NULL) { |
| if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL)) |
| ctxt->sax->error(ctxt->userData, |
| "detected an error in element content\n"); |
| ctxt->wellFormed = 0; |
| } |
| NEXT; |
| break; |
| } |
| |
| break; |
| } |
| case XML_PARSER_END_TAG: |
| if (avail < 2) |
| goto done; |
| if ((!terminate) && |
| (htmlParseLookupSequence(ctxt, '>', 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: |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: internal error, state == CDATA\n"); |
| ctxt->instate = XML_PARSER_CONTENT; |
| ctxt->checkIndex = 0; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: entering CONTENT\n"); |
| #endif |
| break; |
| case XML_PARSER_DTD: |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: internal error, state == DTD\n"); |
| ctxt->instate = XML_PARSER_CONTENT; |
| ctxt->checkIndex = 0; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: entering CONTENT\n"); |
| #endif |
| break; |
| case XML_PARSER_COMMENT: |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: internal error, state == COMMENT\n"); |
| ctxt->instate = XML_PARSER_CONTENT; |
| ctxt->checkIndex = 0; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: entering CONTENT\n"); |
| #endif |
| break; |
| case XML_PARSER_PI: |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: internal error, state == PI\n"); |
| ctxt->instate = XML_PARSER_CONTENT; |
| ctxt->checkIndex = 0; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: entering CONTENT\n"); |
| #endif |
| break; |
| case XML_PARSER_ENTITY_DECL: |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: internal error, state == ENTITY_DECL\n"); |
| ctxt->instate = XML_PARSER_CONTENT; |
| ctxt->checkIndex = 0; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: entering CONTENT\n"); |
| #endif |
| break; |
| case XML_PARSER_ENTITY_VALUE: |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: internal error, state == ENTITY_VALUE\n"); |
| ctxt->instate = XML_PARSER_CONTENT; |
| ctxt->checkIndex = 0; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: entering DTD\n"); |
| #endif |
| break; |
| case XML_PARSER_ATTRIBUTE_VALUE: |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: internal error, state == ATTRIBUTE_VALUE\n"); |
| 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: |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: internal error, state == XML_PARSER_SYSTEM_LITERAL\n"); |
| ctxt->instate = XML_PARSER_CONTENT; |
| ctxt->checkIndex = 0; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: entering CONTENT\n"); |
| #endif |
| break; |
| case XML_PARSER_IGNORE: |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: internal error, state == XML_PARSER_IGNORE\n"); |
| ctxt->instate = XML_PARSER_CONTENT; |
| ctxt->checkIndex = 0; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: entering CONTENT\n"); |
| #endif |
| break; |
| case XML_PARSER_PUBLIC_LITERAL: |
| xmlGenericError(xmlGenericErrorContext, |
| "HPP: internal error, state == XML_PARSER_LITERAL\n"); |
| 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->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 XML 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 ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) && |
| (ctxt->input->buf != NULL) && (ctxt->instate != XML_PARSER_EOF)) { |
| int base = ctxt->input->base - ctxt->input->buf->buffer->content; |
| int cur = ctxt->input->cur - ctxt->input->base; |
| |
| xmlParserInputBufferPush(ctxt->input->buf, size, chunk); |
| ctxt->input->base = ctxt->input->buf->buffer->content + base; |
| ctxt->input->cur = ctxt->input->base + cur; |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, "HPP: pushed %d\n", size); |
| #endif |
| |
| if ((terminate) || (ctxt->input->buf->buffer->use > 80)) |
| htmlParseTryOrFinish(ctxt, terminate); |
| } else if (ctxt->instate != XML_PARSER_EOF) { |
| xmlParserInputBufferPush(ctxt->input->buf, 0, ""); |
| 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 |
| * To allow content encoding detection, @size should be >= 4 |
| * 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 = (htmlParserCtxtPtr) xmlMalloc(sizeof(htmlParserCtxt)); |
| if (ctxt == NULL) { |
| xmlFree(buf); |
| return(NULL); |
| } |
| memset(ctxt, 0, sizeof(htmlParserCtxt)); |
| htmlInitParserCtxt(ctxt); |
| if (sax != NULL) { |
| if (ctxt->sax != &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); |
| return(NULL); |
| } |
| |
| if (filename == NULL) |
| inputStream->filename = NULL; |
| else |
| inputStream->filename = xmlMemStrdup(filename); |
| inputStream->buf = buf; |
| inputStream->base = inputStream->buf->buffer->content; |
| inputStream->cur = inputStream->buf->buffer->content; |
| |
| inputPush(ctxt, inputStream); |
| |
| if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) && |
| (ctxt->input->buf != NULL)) { |
| xmlParserInputBufferPush(ctxt->input->buf, size, chunk); |
| #ifdef DEBUG_PUSH |
| xmlGenericError(xmlGenericErrorContext, "HPP: pushed %d\n", size); |
| #endif |
| } |
| |
| return(ctxt); |
| } |
| |
| /** |
| * 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(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) { |
| 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(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; |
| xmlParserInputBufferPtr buf; |
| /* htmlCharEncoding enc; */ |
| xmlChar *content, *content_line = (xmlChar *) "charset="; |
| |
| buf = xmlParserInputBufferCreateFilename(filename, XML_CHAR_ENCODING_NONE); |
| if (buf == NULL) return(NULL); |
| |
| ctxt = (htmlParserCtxtPtr) xmlMalloc(sizeof(htmlParserCtxt)); |
| if (ctxt == NULL) { |
| xmlGenericError(xmlGenericErrorContext, "malloc failed\n"); |
| return(NULL); |
| } |
| memset(ctxt, 0, sizeof(htmlParserCtxt)); |
| htmlInitParserCtxt(ctxt); |
| inputStream = (htmlParserInputPtr) xmlMalloc(sizeof(htmlParserInput)); |
| if (inputStream == NULL) { |
| xmlGenericError(xmlGenericErrorContext, "malloc failed\n"); |
| xmlFree(ctxt); |
| return(NULL); |
| } |
| memset(inputStream, 0, sizeof(htmlParserInput)); |
| |
| inputStream->filename = xmlMemStrdup(filename); |
| inputStream->line = 1; |
| inputStream->col = 1; |
| inputStream->buf = buf; |
| inputStream->directory = NULL; |
| |
| inputStream->base = inputStream->buf->buffer->content; |
| inputStream->cur = inputStream->buf->buffer->content; |
| inputStream->free = NULL; |
| |
| inputPush(ctxt, inputStream); |
| |
| /* set encoding */ |
| if (encoding) { |
| content = xmlMalloc (xmlStrlen(content_line) + strlen(encoding) + 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); |
| } |
| |
| #endif /* LIBXML_HTML_ENABLED */ |