diff options
Diffstat (limited to 'bundle/libxml/HTMLparser.c')
| -rw-r--r-- | bundle/libxml/HTMLparser.c | 5013 |
1 files changed, 0 insertions, 5013 deletions
diff --git a/bundle/libxml/HTMLparser.c b/bundle/libxml/HTMLparser.c deleted file mode 100644 index 7db3e9e3a8..0000000000 --- a/bundle/libxml/HTMLparser.c +++ /dev/null @@ -1,5013 +0,0 @@ -/* - * 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 * - * * - ************************************************************************/ - -/** - * htmlnamePush: - * @ctxt: an HTML parser context - * @value: the element name - * - * Pushes a new element name on top of the name stack - * - * Returns 0 in case of error, the index in the stack otherwise - */ -static int -htmlnamePush(htmlParserCtxtPtr ctxt, xmlChar * value) -{ - if (ctxt->nameNr >= ctxt->nameMax) { - ctxt->nameMax *= 2; - ctxt->nameTab = - (xmlChar * *)xmlRealloc(ctxt->nameTab, - ctxt->nameMax * - sizeof(ctxt->nameTab[0])); - if (ctxt->nameTab == NULL) { - xmlGenericError(xmlGenericErrorContext, "realloc failed !\n"); - return (0); - } - } - ctxt->nameTab[ctxt->nameNr] = value; - ctxt->name = value; - return (ctxt->nameNr++); -} -/** - * htmlnamePop: - * @ctxt: an HTML parser context - * - * Pops the top element name from the name stack - * - * Returns the name just removed - */ -static xmlChar * -htmlnamePop(htmlParserCtxtPtr ctxt) -{ - xmlChar *ret; - - if (ctxt->nameNr <= 0) - return (0); - ctxt->nameNr--; - if (ctxt->nameNr < 0) - return (0); - if (ctxt->nameNr > 0) - ctxt->name = ctxt->nameTab[ctxt->nameNr - 1]; - else - ctxt->name = NULL; - ret = ctxt->nameTab[ctxt->nameNr]; - ctxt->nameTab[ctxt->nameNr] = 0; - return (ret); -} - -/* - * 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; - if (ctxt->recovery == 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, 0, 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; - } - - if (out - buffer > buffer_size - 100) { - int indx = out - buffer; - - growBuffer(buffer); - out = &buffer[indx]; - } - } else { - ent = htmlParseEntityRef(ctxt, &name); - if (name == NULL) { - *out++ = '&'; - if (out - buffer > buffer_size - 100) { - int indx = out - buffer; - - growBuffer(buffer); - out = &buffer[indx]; - } - } else if (ent == NULL) { - *out++ = '&'; - cur = name; - while (*cur != 0) { - if (out - buffer > buffer_size - 100) { - int indx = out - buffer; - - growBuffer(buffer); - out = &buffer[indx]; - } - *out++ = *cur++; - } - 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; - in->cur++; - 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 = (char *) - xmlNormalizeWindowsPath((xmlChar *)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 */ |