HTMLparser.c
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上传日期:2013-07-25
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文件大小:112k
- /*
- * HTMLparser.c : an HTML 4.0 non-verifying parser
- *
- * See Copyright for the status of this software.
- *
- * Daniel.Veillard@w3.org
- */
- #ifdef WIN32
- #include "win32config.h"
- #else
- #include "config.h"
- #endif
- #include "xmlversion.h"
- #ifdef LIBXML_HTML_ENABLED
- #include <stdio.h>
- #include <string.h> /* for memset() only */
- #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/HTMLparser.h>
- #include <libxml/entities.h>
- #include <libxml/encoding.h>
- #include <libxml/valid.h>
- #include <libxml/parserInternals.h>
- #include <libxml/xmlIO.h>
- #include "xml-error.h"
- #define HTML_MAX_NAMELEN 1000
- #define INPUT_CHUNK 50
- #define HTML_PARSER_BIG_BUFFER_SIZE 1024
- #define HTML_PARSER_BUFFER_SIZE 100
- /* #define DEBUG */
- /* #define DEBUG_PUSH */
- /************************************************************************
- * *
- * Parser stacks related functions and macros *
- * *
- ************************************************************************/
- /*
- * Generic function for accessing stacks in the Parser Context
- */
- #define PUSH_AND_POP(scope, type, name)
- scope int html##name##Push(htmlParserCtxtPtr ctxt, type value) {
- if (ctxt->name##Nr >= ctxt->name##Max) {
- ctxt->name##Max *= 2;
- ctxt->name##Tab = (void *) xmlRealloc(ctxt->name##Tab,
- ctxt->name##Max * sizeof(ctxt->name##Tab[0]));
- if (ctxt->name##Tab == NULL) {
- fprintf(stderr, "realloc failed !n");
- return(0);
- }
- }
- ctxt->name##Tab[ctxt->name##Nr] = value;
- ctxt->name = value;
- return(ctxt->name##Nr++);
- }
- scope type html##name##Pop(htmlParserCtxtPtr ctxt) {
- type ret;
- if (ctxt->name##Nr < 0) return(0);
- ctxt->name##Nr--;
- if (ctxt->name##Nr < 0) return(0);
- if (ctxt->name##Nr > 0)
- ctxt->name = ctxt->name##Tab[ctxt->name##Nr - 1];
- else
- ctxt->name = NULL;
- ret = ctxt->name##Tab[ctxt->name##Nr];
- ctxt->name##Tab[ctxt->name##Nr] = 0;
- return(ret);
- }
- PUSH_AND_POP(extern, xmlNodePtr, node)
- PUSH_AND_POP(extern, xmlChar*, name)
- /*
- * Macros for accessing the content. Those should be used only by the parser,
- * and not exported.
- *
- * Dirty macros, i.e. one need to make assumption on the context to use them
- *
- * CUR_PTR return the current pointer to the xmlChar to be parsed.
- * CUR returns the current xmlChar value, i.e. a 8 bit value if compiled
- * in ISO-Latin or UTF-8, and the current 16 bit value if compiled
- * in UNICODE mode. This should be used internally by the parser
- * only to compare to ASCII values otherwise it would break when
- * running with UTF-8 encoding.
- * NXT(n) returns the n'th next xmlChar. Same as CUR is should be used only
- * to compare on ASCII based substring.
- * UPP(n) returns the n'th next xmlChar converted to uppercase. Same as CUR
- * it should be used only to compare on ASCII based substring.
- * SKIP(n) Skip n xmlChar, and must also be used only to skip ASCII defined
- * strings within the parser.
- *
- * Clean macros, not dependent of an ASCII context, expect UTF-8 encoding
- *
- * CURRENT Returns the current char value, with the full decoding of
- * UTF-8 if we are using this mode. It returns an int.
- * NEXT Skip to the next character, this does the proper decoding
- * in UTF-8 mode. It also pop-up unfinished entities on the fly.
- * COPY(to) copy one char to *to, increment CUR_PTR and to accordingly
- */
- #define CUR ((int) (*ctxt->input->cur))
-
- #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 NEXT htmlNextChar(ctxt);
- #define SKIP_BLANKS htmlSkipBlankChars(ctxt);
- /**
- * htmlNextChar:
- * @ctxt: the HTML parser context
- *
- * Skip to the next char input char.
- */
- void
- htmlNextChar(htmlParserCtxtPtr ctxt) {
- 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);
- }
- }
- /**
- * 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
- */
- 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)
- * 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, Empty, Depr., DTD, Description
- */
- htmlElemDesc html40ElementTable[] = {
- { "a", 0, 0, 0, 0, 0, "anchor " },
- { "abbr", 0, 0, 0, 0, 0, "abbreviated form" },
- { "acronym", 0, 0, 0, 0, 0, "" },
- { "address", 0, 0, 0, 0, 0, "information on author " },
- { "applet", 0, 0, 0, 1, 1, "java applet " },
- { "area", 0, 2, 1, 0, 0, "client-side image map area " },
- { "b", 0, 0, 0, 0, 0, "bold text style" },
- { "base", 0, 2, 1, 0, 0, "document base uri " },
- { "basefont", 0, 2, 1, 1, 1, "base font size " },
- { "bdo", 0, 0, 0, 0, 0, "i18n bidi over-ride " },
- { "big", 0, 0, 0, 0, 0, "large text style" },
- { "blockquote", 0, 0, 0, 0, 0, "long quotation " },
- { "body", 1, 1, 0, 0, 0, "document body " },
- { "br", 0, 2, 1, 0, 0, "forced line break " },
- { "button", 0, 0, 0, 0, 0, "push button " },
- { "caption", 0, 0, 0, 0, 0, "table caption " },
- { "center", 0, 0, 0, 1, 1, "shorthand for div align=center " },
- { "cite", 0, 0, 0, 0, 0, "citation" },
- { "code", 0, 0, 0, 0, 0, "computer code fragment" },
- { "col", 0, 2, 1, 0, 0, "table column " },
- { "colgroup", 0, 1, 0, 0, 0, "table column group " },
- { "dd", 0, 1, 0, 0, 0, "definition description " },
- { "del", 0, 0, 0, 0, 0, "deleted text " },
- { "dfn", 0, 0, 0, 0, 0, "instance definition" },
- { "dir", 0, 0, 0, 1, 1, "directory list" },
- { "div", 0, 0, 0, 0, 0, "generic language/style container"},
- { "dl", 0, 0, 0, 0, 0, "definition list " },
- { "dt", 0, 1, 0, 0, 0, "definition term " },
- { "em", 0, 0, 0, 0, 0, "emphasis" },
- { "fieldset", 0, 0, 0, 0, 0, "form control group " },
- { "font", 0, 0, 0, 1, 1, "local change to font " },
- { "form", 0, 0, 0, 0, 0, "interactive form " },
- { "frame", 0, 2, 1, 0, 2, "subwindow " },
- { "frameset", 0, 0, 0, 0, 2, "window subdivision" },
- { "h1", 0, 0, 0, 0, 0, "heading " },
- { "h2", 0, 0, 0, 0, 0, "heading " },
- { "h3", 0, 0, 0, 0, 0, "heading " },
- { "h4", 0, 0, 0, 0, 0, "heading " },
- { "h5", 0, 0, 0, 0, 0, "heading " },
- { "h6", 0, 0, 0, 0, 0, "heading " },
- { "head", 1, 1, 0, 0, 0, "document head " },
- { "hr", 0, 2, 1, 0, 0, "horizontal rule " },
- { "html", 1, 1, 0, 0, 0, "document root element " },
- { "i", 0, 0, 0, 0, 0, "italic text style" },
- { "iframe", 0, 0, 0, 0, 1, "inline subwindow " },
- { "img", 0, 2, 1, 0, 0, "embedded image " },
- { "input", 0, 2, 1, 0, 0, "form control " },
- { "ins", 0, 0, 0, 0, 0, "inserted text" },
- { "isindex", 0, 2, 1, 1, 1, "single line prompt " },
- { "kbd", 0, 0, 0, 0, 0, "text to be entered by the user" },
- { "label", 0, 0, 0, 0, 0, "form field label text " },
- { "legend", 0, 0, 0, 0, 0, "fieldset legend " },
- { "li", 0, 1, 0, 0, 0, "list item " },
- { "link", 0, 2, 1, 0, 0, "a media-independent link " },
- { "map", 0, 0, 0, 0, 0, "client-side image map " },
- { "menu", 0, 0, 0, 1, 1, "menu list " },
- { "meta", 0, 2, 1, 0, 0, "generic metainformation " },
- { "noframes", 0, 0, 0, 0, 2, "alternate content container for non frame-based rendering " },
- { "noscript", 0, 0, 0, 0, 0, "alternate content container for non script-based rendering " },
- { "object", 0, 0, 0, 0, 0, "generic embedded object " },
- { "ol", 0, 0, 0, 0, 0, "ordered list " },
- { "optgroup", 0, 0, 0, 0, 0, "option group " },
- { "option", 0, 1, 0, 0, 0, "selectable choice " },
- { "p", 0, 1, 0, 0, 0, "paragraph " },
- { "param", 0, 2, 1, 0, 0, "named property value " },
- { "pre", 0, 0, 0, 0, 0, "preformatted text " },
- { "q", 0, 0, 0, 0, 0, "short inline quotation " },
- { "s", 0, 0, 0, 1, 1, "strike-through text style" },
- { "samp", 0, 0, 0, 0, 0, "sample program output, scripts, etc." },
- { "script", 0, 0, 0, 0, 0, "script statements " },
- { "select", 0, 0, 0, 0, 0, "option selector " },
- { "small", 0, 0, 0, 0, 0, "small text style" },
- { "span", 0, 0, 0, 0, 0, "generic language/style container " },
- { "strike", 0, 0, 0, 1, 1, "strike-through text" },
- { "strong", 0, 0, 0, 0, 0, "strong emphasis" },
- { "style", 0, 0, 0, 0, 0, "style info " },
- { "sub", 0, 0, 0, 0, 0, "subscript" },
- { "sup", 0, 0, 0, 0, 0, "superscript " },
- { "table", 0, 0, 0, 0, 0, " " },
- { "tbody", 1, 1, 0, 0, 0, "table body " },
- { "td", 0, 1, 0, 0, 0, "table data cell" },
- { "textarea", 0, 0, 0, 0, 0, "multi-line text field " },
- { "tfoot", 0, 1, 0, 0, 0, "table footer " },
- { "th", 0, 1, 0, 0, 0, "table header cell" },
- { "thead", 0, 1, 0, 0, 0, "table header " },
- { "title", 0, 0, 0, 0, 0, "document title " },
- { "tr", 0, 1, 0, 0, 0, "table row " },
- { "tt", 0, 0, 0, 0, 0, "teletype or monospaced text style" },
- { "u", 0, 0, 0, 1, 1, "underlined text style" },
- { "ul", 0, 0, 0, 0, 0, "unordered list " },
- { "var", 0, 0, 0, 0, 0, "instance of a variable or program argument" },
- };
- /*
- * start tags that imply the end of a current element
- * any tag of each line implies the end of the current element if the type of
- * that element is in the same line
- */
- char *htmlEquEnd[] = {
- "dt", "dd", "li", "option", NULL,
- "h1", "h2", "h3", "h4", "h5", "h6", NULL,
- "ol", "menu", "dir", "address", "pre", "listing", "xmp", NULL,
- NULL
- };
- /*
- * acording the HTML DTD, HR should be added to the 2nd line above, as it
- * is not allowed within a H1, H2, H3, etc. But we should tolerate that case
- * because many documents contain rules in headings...
- */
- /*
- * start tags that imply the end of current element
- */
- 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", NULL,
- "td", "th", "td", "p", 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,
- "fieldset", "legend", "p", "head", "h1", "h2", "h3", "h4", "h5", "h6",
- "pre", "listing", "xmp", "a", NULL,
- NULL
- };
- static char** htmlStartCloseIndex[100];
- static int htmlStartCloseIndexinitialized = 0;
- /************************************************************************
- * *
- * functions to handle HTML specific data *
- * *
- ************************************************************************/
- /**
- * htmlInitAutoClose:
- *
- * Initialize the htmlStartCloseIndex for fast lookup of closing tags names.
- *
- */
- void
- htmlInitAutoClose(void) {
- int index, i = 0;
- if (htmlStartCloseIndexinitialized) return;
- for (index = 0;index < 100;index ++) htmlStartCloseIndex[index] = NULL;
- index = 0;
- while ((htmlStartClose[i] != NULL) && (index < 100 - 1)) {
- htmlStartCloseIndex[index++] = &htmlStartClose[i];
- while (htmlStartClose[i] != NULL) i++;
- i++;
- }
- }
- /**
- * htmlTagLookup:
- * @tag: The tag name
- *
- * Lookup the HTML tag in the ElementTable
- *
- * Returns the related htmlElemDescPtr or NULL if not found.
- */
- htmlElemDescPtr
- htmlTagLookup(const xmlChar *tag) {
- int i = 0;
- for (i = 0; i < (sizeof(html40ElementTable) /
- sizeof(html40ElementTable[0]));i++) {
- if (!xmlStrcmp(tag, BAD_CAST html40ElementTable[i].name))
- return(&html40ElementTable[i]);
- }
- return(NULL);
- }
- /**
- * htmlCheckAutoClose:
- * @new: The new tag name
- * @old: The old tag name
- *
- * Checks wether 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.
- */
- int
- htmlCheckAutoClose(const xmlChar *new, const xmlChar *old) {
- int i, index;
- char **close;
- if (htmlStartCloseIndexinitialized == 0) htmlInitAutoClose();
- /* inefficient, but not a big deal */
- for (index = 0; index < 100;index++) {
- close = htmlStartCloseIndex[index];
- if (close == NULL) return(0);
- if (!xmlStrcmp(BAD_CAST *close, new)) break;
- }
- i = close - htmlStartClose;
- i++;
- while (htmlStartClose[i] != NULL) {
- if (!xmlStrcmp(BAD_CAST htmlStartClose[i], old)) {
- return(1);
- }
- i++;
- }
- return(0);
- }
- /**
- * htmlAutoClose:
- * @ctxt: an HTML parser context
- * @new: The new tag name
- *
- * The HTmL DtD allows a tag to implicitely 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.
- */
- void
- htmlAutoClose(htmlParserCtxtPtr ctxt, const xmlChar *new) {
- xmlChar *oldname;
- while ((ctxt->name != NULL) &&
- (htmlCheckAutoClose(new, ctxt->name))) {
- #ifdef DEBUG
- fprintf(stderr,"htmlAutoClose: %s closes %sn", new, 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
- fprintf(stderr,"htmlAutoClose: popped %sn", oldname);
- #endif
- xmlFree(oldname);
- }
- }
- }
- /**
- * htmlAutoCloseTag:
- * @doc: the HTML document
- * @name: The tag name
- * @elem: the HTML element
- *
- * The HTmL DtD allows a tag to implicitely 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 (!xmlStrcmp(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 implicitely 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);
- }
- /**
- * htmlAutoCloseOnClose:
- * @ctxt: an HTML parser context
- * @new: The new tag name
- *
- * The HTmL DtD allows an ending tag to implicitely close other tags.
- */
- void
- htmlAutoCloseOnClose(htmlParserCtxtPtr ctxt, const xmlChar *new) {
- htmlElemDescPtr info;
- xmlChar *oldname;
- int i;
- #ifdef DEBUG
- fprintf(stderr,"Close of %s stack: %d elementsn", new, ctxt->nameNr);
- for (i = 0;i < ctxt->nameNr;i++)
- fprintf(stderr,"%d : %sn", i, ctxt->nameTab[i]);
- #endif
- for (i = (ctxt->nameNr - 1);i >= 0;i--) {
- if (!xmlStrcmp(new, ctxt->nameTab[i])) break;
- }
- if (i < 0) return;
- while (xmlStrcmp(new, ctxt->name)) {
- info = htmlTagLookup(ctxt->name);
- if ((info == NULL) || (info->endTag == 1)) {
- #ifdef DEBUG
- fprintf(stderr,"htmlAutoCloseOnClose: %s closes %sn", new, ctxt->name);
- #endif
- } else {
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "Opening and ending tag mismatch: %s and %sn",
- new, 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
- fprintf(stderr,"htmlAutoCloseOnClose: popped %sn", oldname);
- #endif
- xmlFree(oldname);
- }
- }
- }
- /************************************************************************
- * *
- * The list of HTML predefined entities *
- * *
- ************************************************************************/
- htmlEntityDesc html40EntitiesTable[] = {
- /*
- * the 4 absolute ones,
- */
- { 34, "quot", "quotation mark = APL quote, U+0022 ISOnum" },
- { 38, "amp", "ampersand, U+0026 ISOnum" },
- { 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.
- */
- { 39, "apos", "single quote" },
- { 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" },
- /*
- * Anything below should really be kept as entities references
- */
- { 402, "fnof", "latin small f with hook = function = florin, U+0192 ISOtech" },
- { 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" },
- { 8226, "bull", "bullet = black small circle, U+2022 ISOpub" },
- { 8230, "hellip","horizontal ellipsis = three dot leader, U+2026 ISOpub" },
- { 8242, "prime","prime = minutes = feet, U+2032 ISOtech" },
- { 8243, "Prime","double prime = seconds = inches, U+2033 ISOtech" },
- { 8254, "oline","overline = spacing overscore, U+203E NEW" },
- { 8260, "frasl","fraction slash, U+2044 NEW" },
- { 8472, "weierp","script capital P = power set = Weierstrass p, U+2118 ISOamso" },
- { 8465, "image","blackletter capital I = imaginary part, U+2111 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 sumation, 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" },
- { 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" },
- { 710, "circ", "modifier letter circumflex accent, U+02C6 ISOpub" },
- { 732, "tilde","small tilde, U+02DC ISOdia" },
- { 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" },
- { 8240, "permil","per mille sign, U+2030 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" },
- { 8364, "euro", "euro sign, U+20AC NEW" }
- };
- /************************************************************************
- * *
- * 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) {
- perror("realloc failed");
- 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.
- */
- htmlEntityDescPtr
- htmlEntityLookup(const xmlChar *name) {
- int i;
- for (i = 0;i < (sizeof(html40EntitiesTable)/
- sizeof(html40EntitiesTable[0]));i++) {
- if (!xmlStrcmp(name, BAD_CAST html40EntitiesTable[i].name)) {
- #ifdef DEBUG
- fprintf(stderr,"Found entity %sn", name);
- #endif
- return(&html40EntitiesTable[i]);
- }
- }
- return(NULL);
- }
- /**
- * 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
- *
- * Subtitute 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, int len,
- xmlChar end, xmlChar end2, xmlChar end3) {
- xmlChar *buffer = NULL;
- int buffer_size = 0;
- xmlChar *out = NULL;
- xmlChar *name = NULL;
- xmlChar *cur = NULL;
- htmlEntityDescPtr ent;
- int nbchars = 0;
- unsigned int max = (unsigned int) len;
- /*
- * allocate a translation buffer.
- */
- buffer_size = HTML_PARSER_BIG_BUFFER_SIZE;
- buffer = (xmlChar *) xmlMalloc(buffer_size * sizeof(xmlChar));
- if (buffer == NULL) {
- perror("htmlDecodeEntities: malloc failed");
- return(NULL);
- }
- out = buffer;
- /*
- * Ok loop until we reach one of the ending char or a size limit.
- */
- while ((nbchars < max) && (CUR != end) &&
- (CUR != end2) && (CUR != end3)) {
- if (CUR == '&') {
- if (NXT(1) == '#') {
- int val = htmlParseCharRef(ctxt);
- /* invalid for UTF-8 variable encoding !!!!! */
- *out++ = val;
- nbchars += 3; /* !!!! */
- } else {
- ent = htmlParseEntityRef(ctxt, &name);
- if (name != NULL) {
- if ((ent == NULL) || (ent->value <= 0) ||
- (ent->value >= 255)) {
- *out++ = '&';
- cur = name;
- while (*cur != 0) {
- if (out - buffer > buffer_size - 100) {
- int index = out - buffer;
- growBuffer(buffer);
- out = &buffer[index];
- }
- *out++ = *cur++;
- }
- *out++ = ';';
- } else {
- /* invalid for UTF-8 variable encoding !!!!! */
- *out++ = (xmlChar)ent->value;
- if (out - buffer > buffer_size - 100) {
- int index = out - buffer;
- growBuffer(buffer);
- out = &buffer[index];
- }
- }
- nbchars += 2 + xmlStrlen(name);
- xmlFree(name);
- }
- }
- } else {
- /* invalid for UTF-8 , use COPY(out); !!!!! */
- *out++ = CUR;
- nbchars++;
- if (out - buffer > buffer_size - 100) {
- int index = out - buffer;
-
- growBuffer(buffer);
- out = &buffer[index];
- }
- NEXT;
- }
- }
- *out++ = 0;
- return(buffer);
- }
- /************************************************************************
- * *
- * Commodity functions to handle encodings *
- * *
- ************************************************************************/
- /**
- * htmlSwitchEncoding:
- * @ctxt: the parser context
- * @len: the len of @cur
- *
- * change the input functions when discovering the character encoding
- * of a given entity.
- *
- */
- void
- htmlSwitchEncoding(htmlParserCtxtPtr ctxt, xmlCharEncoding enc)
- {
- switch (enc) {
- case XML_CHAR_ENCODING_ERROR:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData, "encoding unknownn");
- ctxt->wellFormed = 0;
- break;
- case XML_CHAR_ENCODING_NONE:
- /* let's assume it's UTF-8 without the XML decl */
- return;
- case XML_CHAR_ENCODING_UTF8:
- /* default encoding, no conversion should be needed */
- return;
- case XML_CHAR_ENCODING_UTF16LE:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding UTF16 little endian not supportedn");
- break;
- case XML_CHAR_ENCODING_UTF16BE:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding UTF16 big endian not supportedn");
- break;
- case XML_CHAR_ENCODING_UCS4LE:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding USC4 little endian not supportedn");
- break;
- case XML_CHAR_ENCODING_UCS4BE:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding USC4 big endian not supportedn");
- break;
- case XML_CHAR_ENCODING_EBCDIC:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding EBCDIC not supportedn");
- break;
- case XML_CHAR_ENCODING_UCS4_2143:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding UCS4 2143 not supportedn");
- break;
- case XML_CHAR_ENCODING_UCS4_3412:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding UCS4 3412 not supportedn");
- break;
- case XML_CHAR_ENCODING_UCS2:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding UCS2 not supportedn");
- break;
- case XML_CHAR_ENCODING_8859_1:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding ISO_8859_1 ISO Latin 1 not supportedn");
- break;
- case XML_CHAR_ENCODING_8859_2:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding ISO_8859_2 ISO Latin 2 not supportedn");
- break;
- case XML_CHAR_ENCODING_8859_3:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding ISO_8859_3 not supportedn");
- break;
- case XML_CHAR_ENCODING_8859_4:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding ISO_8859_4 not supportedn");
- break;
- case XML_CHAR_ENCODING_8859_5:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding ISO_8859_5 not supportedn");
- break;
- case XML_CHAR_ENCODING_8859_6:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding ISO_8859_6 not supportedn");
- break;
- case XML_CHAR_ENCODING_8859_7:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding ISO_8859_7 not supportedn");
- break;
- case XML_CHAR_ENCODING_8859_8:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding ISO_8859_8 not supportedn");
- break;
- case XML_CHAR_ENCODING_8859_9:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding ISO_8859_9 not supportedn");
- break;
- case XML_CHAR_ENCODING_2022_JP:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding ISO-2022-JPnot supportedn");
- break;
- case XML_CHAR_ENCODING_SHIFT_JIS:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding Shift_JISnot supportedn");
- break;
- case XML_CHAR_ENCODING_EUC_JP:
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "char encoding EUC-JPnot supportedn");
- break;
- }
- }
- /************************************************************************
- * *
- * Commodity functions to handle streams *
- * *
- ************************************************************************/
- /**
- * htmlFreeInputStream:
- * @input: an htmlParserInputPtr
- *
- * Free up an input stream.
- */
- void
- htmlFreeInputStream(htmlParserInputPtr input) {
- if (input == NULL) return;
- if (input->filename != NULL) xmlFree((char *) input->filename);
- if (input->directory != NULL) xmlFree((char *) input->directory);
- if ((input->free != NULL) && (input->base != NULL))
- input->free((xmlChar *) input->base);
- if (input->buf != NULL)
- xmlFreeParserInputBuffer(input->buf);
- memset(input, -1, sizeof(htmlParserInput));
- xmlFree(input);
- }
- /**
- * htmlNewInputStream:
- * @ctxt: an HTML parser context
- *
- * Create a new input stream structure
- * Returns the new input stream or NULL
- */
- 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 streamn");
- ctxt->errNo = XML_ERR_NO_MEMORY;
- return(NULL);
- }
- 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->consumed = 0;
- input->length = 0;
- return(input);
- }
- /************************************************************************
- * *
- * Commodity functions, cleanup needed ? *
- * *
- ************************************************************************/
- /**
- * 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) {
- int i;
- xmlNodePtr lastChild;
- for (i = 0;i < len;i++)
- if (!(IS_BLANK(str[i]))) return(0);
- if (CUR != '<') return(0);
- if (ctxt->node == NULL) return(0);
- lastChild = xmlGetLastChild(ctxt->node);
- if (lastChild == NULL) {
- if (ctxt->node->content != NULL) return(0);
- } else if (xmlNodeIsText(lastChild))
- return(0);
- return(1);
- }
- /**
- * htmlHandleEntity:
- * @ctxt: an HTML parser context
- * @entity: an XML entity pointer.
- *
- * Default handling of an HTML entity, call the parser with the
- * substitution string
- */
- void
- htmlHandleEntity(htmlParserCtxtPtr ctxt, xmlEntityPtr entity) {
- int len;
- if (entity->content == NULL) {
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData, "htmlHandleEntity %s: content == NULLn",
- entity->name);
- ctxt->wellFormed = 0;
- return;
- }
- len = xmlStrlen(entity->content);
- /*
- * Just handle the content as a set of chars.
- */
- if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
- ctxt->sax->characters(ctxt->userData, entity->content, len);
- }
- /**
- * htmlNewDoc:
- * @URI: URI for the dtd, or NULL
- * @ExternalID: the external ID of the DTD, or NULL
- *
- * Returns a new document
- */
- htmlDocPtr
- htmlNewDoc(const xmlChar *URI, const xmlChar *ExternalID) {
- xmlDocPtr cur;
- /*
- * Allocate a new document and fill the fields.
- */
- cur = (xmlDocPtr) xmlMalloc(sizeof(xmlDoc));
- if (cur == NULL) {
- fprintf(stderr, "xmlNewDoc : malloc failedn");
- return(NULL);
- }
- memset(cur, 0, sizeof(xmlDoc));
- cur->type = XML_HTML_DOCUMENT_NODE;
- cur->version = NULL;
- cur->intSubset = NULL;
- if ((ExternalID == NULL) &&
- (URI == NULL))
- xmlCreateIntSubset(cur, BAD_CAST "HTML",
- BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN",
- BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd");
- else
- xmlCreateIntSubset(cur, BAD_CAST "HTML", ExternalID, URI);
- 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;
- #ifndef XML_WITHOUT_CORBA
- cur->_private = NULL;
- #endif
- return(cur);
- }
- /************************************************************************
- * *
- * 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
- */
- 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)))) {
- 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 sensistive.
- *
- * Returns the Name parsed or NULL
- */
- 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) {
- fprintf(stderr,
- "htmlParseName: reached HTML_MAX_NAMELEN limitn");
- 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
- */
- xmlChar *
- htmlParseHTMLAttribute(htmlParserCtxtPtr ctxt, const xmlChar stop) {
- #if 0
- xmlChar buf[HTML_MAX_NAMELEN];
- int len = 0;
- GROW;
- while ((CUR != 0) && (CUR != stop) && (CUR != '>')) {
- if ((stop == 0) && (IS_BLANK(CUR))) break;
- buf[len++] = CUR;
- NEXT;
- if (len >= HTML_MAX_NAMELEN) {
- fprintf(stderr,
- "htmlParseHTMLAttribute: reached HTML_MAX_NAMELEN limitn");
- while ((!IS_BLANK(CUR)) && (CUR != '<') &&
- (CUR != '>') &&
- (CUR != ''') && (CUR != '"'))
- NEXT;
- break;
- }
- }
- return(xmlStrndup(buf, len));
- #else
- xmlChar *buffer = NULL;
- int buffer_size = 0;
- xmlChar *out = NULL;
- xmlChar *name = NULL;
- xmlChar *cur = NULL;
- htmlEntityDescPtr ent;
- /*
- * allocate a translation buffer.
- */
- buffer_size = HTML_PARSER_BIG_BUFFER_SIZE;
- buffer = (xmlChar *) xmlMalloc(buffer_size * sizeof(xmlChar));
- if (buffer == NULL) {
- perror("htmlParseHTMLAttribute: malloc failed");
- return(NULL);
- }
- out = buffer;
- /*
- * Ok loop until we reach one of the ending chars
- */
- while ((CUR != 0) && (CUR != stop) && (CUR != '>')) {
- if ((stop == 0) && (IS_BLANK(CUR))) break;
- if (CUR == '&') {
- if (NXT(1) == '#') {
- int val = htmlParseCharRef(ctxt);
- *out++ = val;
- } else {
- ent = htmlParseEntityRef(ctxt, &name);
- if (name == NULL) {
- *out++ = '&';
- if (out - buffer > buffer_size - 100) {
- int index = out - buffer;
- growBuffer(buffer);
- out = &buffer[index];
- }
- } else if ((ent == NULL) || (ent->value <= 0) ||
- (ent->value >= 255)) {
- *out++ = '&';
- cur = name;
- while (*cur != 0) {
- if (out - buffer > buffer_size - 100) {
- int index = out - buffer;
- growBuffer(buffer);
- out = &buffer[index];
- }
- *out++ = *cur++;
- }
- xmlFree(name);
- } else {
- *out++ = ent->value;
- if (out - buffer > buffer_size - 100) {
- int index = out - buffer;
- growBuffer(buffer);
- out = &buffer[index];
- }
- xmlFree(name);
- }
- }
- } else {
- *out++ = CUR;
- if (out - buffer > buffer_size - 100) {
- int index = out - buffer;
-
- growBuffer(buffer);
- out = &buffer[index];
- }
- NEXT;
- }
- }
- *out++ = 0;
- return(buffer);
- #endif
- }
- /**
- * htmlParseNmtoken:
- * @ctxt: an HTML parser context
- *
- * parse an HTML Nmtoken.
- *
- * Returns the Nmtoken parsed or NULL
- */
- xmlChar *
- htmlParseNmtoken(htmlParserCtxtPtr ctxt) {
- xmlChar buf[HTML_MAX_NAMELEN];
- int len = 0;
- GROW;
- 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) {
- fprintf(stderr,
- "htmlParseNmtoken: reached HTML_MAX_NAMELEN limitn");
- while ((IS_LETTER(CUR)) || (IS_DIGIT(CUR)) ||
- (CUR == '.') || (CUR == '-') ||
- (CUR == '_') || (CUR == ':') ||
- (IS_COMBINING(CUR)) ||
- (IS_EXTENDER(CUR)))
- NEXT;
- break;
- }
- }
- return(xmlStrndup(buf, len));
- }
- /**
- * 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.
- */
- htmlEntityDescPtr
- htmlParseEntityRef(htmlParserCtxtPtr ctxt, xmlChar **str) {
- xmlChar *name;
- htmlEntityDescPtr 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 namen");
- 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.
- */
- 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: ' expectedn");
- 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: ' expectedn");
- 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 foundn");
- ctxt->wellFormed = 0;
- }
- }
- return(ret);
- }
- /**
- * htmlParseSystemLiteral:
- * @ctxt: an HTML parser context
- *
- * parse an HTML Literal
- *
- * [11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'")
- *
- * Returns the SystemLiteral parsed or NULL
- */
- 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 SystemLiteraln");
- 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 SystemLiteraln");
- 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 ' expectedn");
- 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.
- */
- 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 PubidLiteraln");
- 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 PubidLiteraln");
- 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 ' expectedn");
- ctxt->wellFormed = 0;
- }
-
- return(ret);
- }
- /**
- * htmlParseCharData:
- * @ctxt: an HTML parser context
- * @cdata: int indicating whether we are within a CDATA section
- *
- * parse a CharData section.
- * if we are within a CDATA section ']]>' marks an end of section.
- *
- * [14] CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*)
- */
- void
- htmlParseCharData(htmlParserCtxtPtr ctxt, int cdata) {
- xmlChar *buf = NULL;
- int len = 0;
- int size = HTML_PARSER_BUFFER_SIZE;
- xmlChar q;
- buf = (xmlChar *) xmlMalloc(size * sizeof(xmlChar));
- if (buf == NULL) {
- fprintf(stderr, "malloc of %d byte failedn", size);
- return;
- }
- q = CUR;
- while ((IS_CHAR(q)) && (q != '<') &&
- (q != '&')) {
- if ((q == ']') && (NXT(1) == ']') &&
- (NXT(2) == '>')) {
- if (cdata) break;
- else {
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "Sequence ']]>' not allowed in contentn");
- ctxt->wellFormed = 0;
- }
- }
- if (len + 1 >= size) {
- size *= 2;
- buf = xmlRealloc(buf, size * sizeof(xmlChar));
- if (buf == NULL) {
- fprintf(stderr, "realloc of %d byte failedn", size);
- return;
- }
- }
- buf[len++] = q;
- NEXT;
- q = CUR;
- }
- if (len == 0) {
- xmlFree(buf);
- return;
- }
- /*
- * Ok the buffer is to be consumed as chars.
- */
- if (ctxt->sax != NULL) {
- if (areBlanks(ctxt, buf, len)) {
- if (ctxt->sax->ignorableWhitespace != NULL)
- ctxt->sax->ignorableWhitespace(ctxt->userData, buf, len);
- } else {
- if (ctxt->sax->characters != NULL)
- ctxt->sax->characters(ctxt->userData, buf, len);
- }
- }
- xmlFree(buf);
- }
- /**
- * htmlParseExternalID:
- * @ctxt: an HTML parser context
- * @publicID: a xmlChar** receiving PubidLiteral
- * @strict: indicate whether we should restrict parsing to only
- * production [75], see NOTE below
- *
- * Parse an External ID or a Public ID
- *
- * NOTE: Productions [75] and [83] interract badly since [75] can generate
- * 'PUBLIC' S PubidLiteral S SystemLiteral
- *
- * [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.
- */
- xmlChar *
- htmlParseExternalID(htmlParserCtxtPtr ctxt, xmlChar **publicID, int strict) {
- 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 URIn");
- 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 Identifiern");
- 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 - '-')))* '-->'
- */
- void
- htmlParseComment(htmlParserCtxtPtr ctxt) {
- xmlChar *buf = NULL;
- int len = 0;
- int size = HTML_PARSER_BUFFER_SIZE;
- register xmlChar s, r, q;
- /*
- * Check that there is a comment right here.
- */
- if ((CUR != '<') || (NXT(1) != '!') ||
- (NXT(2) != '-') || (NXT(3) != '-')) return;
- buf = (xmlChar *) xmlMalloc(size * sizeof(xmlChar));
- if (buf == NULL) {
- fprintf(stderr, "malloc of %d byte failedn", size);
- return;
- }
- q = r = '-'; /* 0 or '-' to cover our ass against <!--> and <!---> ? !!! */
- SKIP(4);
- s = CUR;
-
- while (IS_CHAR(s) &&
- ((s != '>') || (r != '-') || (q != '-'))) {
- if (len + 1 >= size) {
- size *= 2;
- buf = xmlRealloc(buf, size * sizeof(xmlChar));
- if (buf == NULL) {
- fprintf(stderr, "realloc of %d byte failedn", size);
- return;
- }
- }
- buf[len++] = s;
- NEXT;
- q = r;
- r = s;
- s = CUR;
- }
- buf[len - 2] = 0;
- if (!IS_CHAR(s)) {
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData, "Comment not terminated n<!--%.50sn", buf);
- ctxt->wellFormed = 0;
- } else {
- NEXT;
- if ((ctxt->sax != NULL) && (ctxt->sax->comment != NULL)) {
- ctxt->sax->comment(ctxt->userData, buf);
- }
- }
- xmlFree(buf);
- }
- /**
- * 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 valuen");
- ctxt->wellFormed = 0;
- val = 0;
- break;
- }
- 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 valuen");
- ctxt->wellFormed = 0;
- val = 0;
- break;
- }
- NEXT;
- }
- if (CUR == ';')
- NEXT;
- } else {
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData, "htmlParseCharRef: invalid valuen");
- 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 %dn",
- 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?)? '>'
- */
- 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, 0);
- 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 unproperly terminatedn");
- ctxt->wellFormed = 0;
- /* We shouldn't try to resynchronize ... */
- } else {
- }
- NEXT;
- /*
- * Create the document accordingly to the DOCTYPE
- */
- if (ctxt->myDoc != NULL)
- xmlFreeDoc(ctxt->myDoc);
-
- ctxt->myDoc = htmlNewDoc(URI, ExternalID);
- /*
- * 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.
- */
- xmlChar *
- htmlParseAttribute(htmlParserCtxtPtr ctxt, xmlChar **value) {
- xmlChar *name, *val = NULL;
- *value = NULL;
- name = htmlParseName(ctxt);
- if (name == NULL) {
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData, "error parsing attribute namen");
- 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 %sn", name);
- }
- *value = val;
- return(name);
- }
- /**
- * 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? '/>'
- *
- */
- void
- htmlParseStartTag(htmlParserCtxtPtr ctxt) {
- xmlChar *name;
- xmlChar *attname;
- xmlChar *attvalue;
- const xmlChar **atts = NULL;
- int nbatts = 0;
- int maxatts = 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 namen");
- ctxt->wellFormed = 0;
- return;
- }
- /*
- * Check for auto-closure of HTML elements.
- */
- htmlAutoClose(ctxt, name);
- /*
- * 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 (!xmlStrcmp(atts[i], attname)) {
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "Attribute %s redefinedn",
- 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) {
- fprintf(stderr, "malloc of %ld byte failedn",
- maxatts * (long)sizeof(xmlChar *));
- if (name != NULL) xmlFree(name);
- return;
- }
- } else if (nbatts + 4 > maxatts) {
- maxatts *= 2;
- atts = (const xmlChar **) xmlRealloc(atts, maxatts * sizeof(xmlChar *));
- if (atts == NULL) {
- fprintf(stderr, "realloc of %ld byte failedn",
- maxatts * (long)sizeof(xmlChar *));
- if (name != NULL) xmlFree(name);
- return;
- }
- }
- atts[nbatts++] = attname;
- atts[nbatts++] = attvalue;
- atts[nbatts] = NULL;
- atts[nbatts + 1] = NULL;
- }
- failed:
- SKIP_BLANKS;
- if (cons == ctxt->nbChars) {
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "htmlParseStartTag: problem parsing attributesn");
- ctxt->wellFormed = 0;
- break;
- }
- }
- /*
- * SAX: Start of Element !
- */
- htmlnamePush(ctxt, xmlStrdup(name));
- #ifdef DEBUG
- fprintf(stderr,"Start of element %s: pushed %sn", 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(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? '>'
- */
- void
- htmlParseEndTag(htmlParserCtxtPtr ctxt) {
- xmlChar *name;
- xmlChar *oldname;
- int i;
- if ((CUR != '<') || (NXT(1) != '/')) {
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData, "htmlParseEndTag: '</' not foundn");
- ctxt->wellFormed = 0;
- return;
- }
- SKIP(2);
- name = htmlParseHTMLName(ctxt);
- if (name == NULL) return;
- /*
- * 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 (!xmlStrcmp(name, ctxt->nameTab[i])) break;
- }
- if (i < 0) {
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "Unexpected end tag : %sn", name);
- xmlFree(name);
- ctxt->wellFormed = 0;
- return;
- }
- /*
- * 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 (xmlStrcmp(name, ctxt->name)) {
- #ifdef DEBUG
- fprintf(stderr,"End of tag %s: expecting %sn", name, ctxt->name);
- #endif
- if ((ctxt->name != NULL) &&
- (xmlStrcmp(ctxt->name, name))) {
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "Opening and ending tag mismatch: %s and %sn",
- name, ctxt->name);
- ctxt->wellFormed = 0;
- }
- }
- /*
- * SAX: End of Tag
- */
- oldname = ctxt->name;
- if ((oldname != NULL) && (!xmlStrcmp(oldname, name))) {
- if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
- ctxt->sax->endElement(ctxt->userData, name);
- oldname = htmlnamePop(ctxt);
- if (oldname != NULL) {
- #ifdef DEBUG
- fprintf(stderr,"End of tag %s: popping out %sn", name, oldname);
- #endif
- xmlFree(oldname);
- #ifdef DEBUG
- } else {
- fprintf(stderr,"End of tag %s: stack empty !!!n", name);
- #endif
- }
- }
- if (name != NULL)
- xmlFree(name);
- return;
- }
- /**
- * 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.
- */
- void
- htmlParseReference(htmlParserCtxtPtr ctxt) {
- htmlEntityDescPtr ent;
- xmlChar out[2];
- xmlChar *name;
- int val;
- if (CUR != '&') return;
- if (NXT(1) == '#') {
- val = htmlParseCharRef(ctxt);
- /* invalid for UTF-8 variable encoding !!!!! */
- out[0] = val;
- out[1] = 0;
- if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
- ctxt->sax->characters(ctxt->userData, out, 1);
- } else {
- ent = htmlParseEntityRef(ctxt, &name);
- if (name == NULL) {
- ctxt->sax->characters(ctxt->userData, BAD_CAST "&", 1);
- return;
- }
- if ((ent == NULL) || (ent->value <= 0) || (ent->value >= 255)) {
- 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 {
- /* invalid for UTF-8 variable encoding !!!!! */
- out[0] = ent->value;
- out[1] = 0;
- if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
- ctxt->sax->characters(ctxt->userData, out, 1);
- }
- xmlFree(name);
- }
- }
- /**
- * htmlParseContent:
- * @ctxt: an HTML parser context
- * @name: the node name
- *
- * Parse a content: comment, sub-element, reference or text.
- *
- */
- 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) == '/')) {
- htmlParseEndTag(ctxt);
- if (currentNode != NULL) xmlFree(currentNode);
- return;
- }
- /*
- * Has this node been popped out during parsing of
- * the next element
- */
- if ((xmlStrcmp(currentNode, ctxt->name)) &&
- (depth >= ctxt->nameNr)) {
- if (currentNode != NULL) xmlFree(currentNode);
- return;
- }
- /*
- * 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);
- }
- /*
- * Last case, text. Note that References are handled directly.
- */
- else {
- htmlParseCharData(ctxt, 0);
- }
- 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 contentn");
- 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) {
- const xmlChar *openTag = CUR_PTR;
- xmlChar *name;
- xmlChar *currentNode = NULL;
- htmlElemDescPtr info;
- htmlParserNodeInfo node_info;
- xmlChar *oldname;
- int depth = ctxt->nameNr;
- /* 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)
- fprintf(stderr, "Start of element %sn", name);
- else if (name == NULL)
- fprintf(stderr, "Start of element failed, was %sn", oldname);
- else
- fprintf(stderr, "Start of element %s, was %sn", name, oldname);
- #endif
- if (((depth == ctxt->nameNr) && (!xmlStrcmp(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 invalidn",
- name);
- ctxt->wellFormed = 0;
- } else if (info->depr) {
- /***************************
- if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL))
- ctxt->sax->warning(ctxt->userData, "Tag %s is deprecatedn",
- name);
- ***************************/
- }
- /*
- * Check for an Empty Element labelled 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
- fprintf(stderr,"End of tag the XML way: popping out %sn", 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 Tagn%.30sn",
- openTag);
- ctxt->wellFormed = 0;
- /*
- * end of parsing of this node.
- */
- if (!xmlStrcmp(name, ctxt->name)) {
- nodePop(ctxt);
- oldname = htmlnamePop(ctxt);
- #ifdef DEBUG
- fprintf(stderr,"End of start tag problem: popping out %sn", 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
- fprintf(stderr,"End of empty tag %s : popping out %sn", 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)) {
- htmlParseContent(ctxt);
- if (ctxt->nameNr < depth) break;
- }
- if (!IS_CHAR(CUR)) {
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "Premature end of data in tag %sn", currentNode);
- ctxt->wellFormed = 0;
- /*
- * end of parsing of this node.
- */
- nodePop(ctxt);
- oldname = htmlnamePop(ctxt);
- #ifdef DEBUG
- fprintf(stderr,"Premature end of tag %s : popping out %sn", name, oldname);
- #endif
- if (oldname != NULL)
- xmlFree(oldname);
- if (currentNode != NULL)
- xmlFree(currentNode);
- return;
- }
- /*
- * 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 (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) {
- 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 emptyn");
- ctxt->wellFormed = 0;
- }
- /*
- * Parse possible comments before any content
- */
- while ((CUR == '<') && (NXT(1) == '!') &&
- (NXT(2) == '-') && (NXT(3) == '-')) {
- if (ctxt->myDoc == NULL)
- ctxt->myDoc = htmlNewDoc(NULL, NULL);
- 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;
- /*
- * Create the document if not done already.
- */
- if (ctxt->myDoc == NULL) {
- ctxt->myDoc = htmlNewDoc(NULL, NULL);
- }
- /*
- * Time to start parsing the tree itself
- */
- htmlParseContent(ctxt);
- /*
- * SAX: end of the document processing.
- */
- if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
- ctxt->sax->endDocument(ctxt->userData);
- if (! ctxt->wellFormed) return(-1);
- return(0);
- }
- /************************************************************************
- * *
- * Parser contexts handling *
- * *
- ************************************************************************/
- /**
- * xmlInitParserCtxt:
- * @ctxt: an HTML parser context
- *
- * Initialize a parser context
- */
- void
- htmlInitParserCtxt(htmlParserCtxtPtr ctxt)
- {
- htmlSAXHandler *sax;
- if (ctxt == NULL) return;
- memset(ctxt, 0, sizeof(htmlParserCtxt));
- sax = (htmlSAXHandler *) xmlMalloc(sizeof(htmlSAXHandler));
- if (sax == NULL) {
- fprintf(stderr, "htmlInitParserCtxt: out of memoryn");
- }
- memset(sax, 0, sizeof(htmlSAXHandler));
- /* Allocate the Input stack */
- ctxt->inputTab = (htmlParserInputPtr *)
- xmlMalloc(5 * sizeof(htmlParserInputPtr));
- if (ctxt->inputTab == NULL) {
- fprintf(stderr, "htmlInitParserCtxt: out of memoryn");
- }
- 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));
- ctxt->nodeNr = 0;
- ctxt->nodeMax = 10;
- ctxt->node = NULL;
- /* Allocate the Name stack */
- ctxt->nameTab = (xmlChar **) xmlMalloc(10 * sizeof(xmlChar *));
- 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->html = 1;
- ctxt->record_info = 0;
- ctxt->validate = 0;
- ctxt->nbChars = 0;
- ctxt->checkIndex = 0;
- 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)
- {
- htmlParserInputPtr input;
- xmlChar *oldname;
- if (ctxt == NULL) return;
- while ((input = inputPop(ctxt)) != NULL) {
- xmlFreeInputStream(input);
- }
- if (ctxt->nodeTab != NULL) xmlFree(ctxt->nodeTab);
- while ((oldname = htmlnamePop(ctxt)) != NULL) {
- xmlFree(oldname);
- }
- if (ctxt->nameTab != NULL) xmlFree(ctxt->nameTab);
- if (ctxt->directory != NULL) xmlFree(ctxt->directory);
- if (ctxt->inputTab != NULL) xmlFree(ctxt->inputTab);
- if (ctxt->version != NULL) xmlFree((char *) ctxt->version);
- if ((ctxt->sax != NULL) && (ctxt->sax != &htmlDefaultSAXHandler))
- xmlFree(ctxt->sax);
- xmlFree(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.
- *
- * Returns the new parser context or NULL
- */
- htmlParserCtxtPtr
- htmlCreateDocParserCtxt(xmlChar *cur, const char *encoding) {
- htmlParserCtxtPtr ctxt;
- htmlParserInputPtr input;
- /* htmlCharEncoding enc; */
- ctxt = (htmlParserCtxtPtr) xmlMalloc(sizeof(htmlParserCtxt));
- if (ctxt == NULL) {
- perror("malloc");
- return(NULL);
- }
- htmlInitParserCtxt(ctxt);
- input = (htmlParserInputPtr) xmlMalloc(sizeof(htmlParserInput));
- if (input == NULL) {
- perror("malloc");
- xmlFree(ctxt);
- return(NULL);
- }
- memset(input, 0, sizeof(htmlParserInput));
- input->line = 1;
- input->col = 1;
- input->base = cur;
- input->cur = cur;
- inputPush(ctxt, input);
- return(ctxt);
- }
- /************************************************************************
- * *
- * 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.
- */
- int
- htmlParseLookupSequence(htmlParserCtxtPtr ctxt, xmlChar first,
- xmlChar next, xmlChar third) {
- int base, len;
- htmlParserInputPtr in;
- const xmlChar *buf;
- 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 (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)
- fprintf(stderr, "HPP: lookup '%c' found at %dn",
- first, base);
- else if (third == 0)
- fprintf(stderr, "HPP: lookup '%c%c' found at %dn",
- first, next, base);
- else
- fprintf(stderr, "HPP: lookup '%c%c%c' found at %dn",
- first, next, third, base);
- #endif
- return(base - (in->cur - in->base));
- }
- }
- ctxt->checkIndex = base;
- #ifdef DEBUG_PUSH
- if (next == 0)
- fprintf(stderr, "HPP: lookup '%c' failedn", first);
- else if (third == 0)
- fprintf(stderr, "HPP: lookup '%c%c' failedn", first, next);
- else
- fprintf(stderr, "HPP: lookup '%c%c%c' failedn", 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
- */
- int
- htmlParseTryOrFinish(htmlParserCtxtPtr ctxt, int terminate) {
- int ret = 0;
- htmlParserInputPtr in;
- int avail;
- xmlChar cur, next;
- #ifdef DEBUG_PUSH
- switch (ctxt->instate) {
- case XML_PARSER_EOF:
- fprintf(stderr, "HPP: try EOFn"); break;
- case XML_PARSER_START:
- fprintf(stderr, "HPP: try STARTn"); break;
- case XML_PARSER_MISC:
- fprintf(stderr, "HPP: try MISCn");break;
- case XML_PARSER_COMMENT:
- fprintf(stderr, "HPP: try COMMENTn");break;
- case XML_PARSER_PROLOG:
- fprintf(stderr, "HPP: try PROLOGn");break;
- case XML_PARSER_START_TAG:
- fprintf(stderr, "HPP: try START_TAGn");break;
- case XML_PARSER_CONTENT:
- fprintf(stderr, "HPP: try CONTENTn");break;
- case XML_PARSER_CDATA_SECTION:
- fprintf(stderr, "HPP: try CDATA_SECTIONn");break;
- case XML_PARSER_END_TAG:
- fprintf(stderr, "HPP: try END_TAGn");break;
- case XML_PARSER_ENTITY_DECL:
- fprintf(stderr, "HPP: try ENTITY_DECLn");break;
- case XML_PARSER_ENTITY_VALUE:
- fprintf(stderr, "HPP: try ENTITY_VALUEn");break;
- case XML_PARSER_ATTRIBUTE_VALUE:
- fprintf(stderr, "HPP: try ATTRIBUTE_VALUEn");break;
- case XML_PARSER_DTD:
- fprintf(stderr, "HPP: try DTDn");break;
- case XML_PARSER_EPILOG:
- fprintf(stderr, "HPP: try EPILOGn");break;
- case XML_PARSER_PI:
- fprintf(stderr, "HPP: try PIn");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 < 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);
- 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
- fprintf(stderr, "HPP: Parsing internal subsetn");
- #endif
- htmlParseDocTypeDecl(ctxt);
- ctxt->instate = XML_PARSER_PROLOG;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering PROLOGn");
- #endif
- } else {
- ctxt->myDoc = htmlNewDoc(NULL, NULL);
- ctxt->instate = XML_PARSER_MISC;
- }
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering MISCn");
- #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
- fprintf(stderr, "HPP: Parsing Commentn");
- #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
- fprintf(stderr, "HPP: Parsing internal subsetn");
- #endif
- htmlParseDocTypeDecl(ctxt);
- ctxt->instate = XML_PARSER_PROLOG;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering PROLOGn");
- #endif
- } else if ((cur == '<') && (next == '!') &&
- (avail < 9)) {
- goto done;
- } else {
- ctxt->instate = XML_PARSER_START_TAG;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering START_TAGn");
- #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
- fprintf(stderr, "HPP: Parsing Commentn");
- #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
- fprintf(stderr, "HPP: entering START_TAGn");
- #endif
- }
- break;
- case XML_PARSER_EPILOG:
- 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
- fprintf(stderr, "HPP: Parsing Commentn");
- #endif
- htmlParseComment(ctxt);
- ctxt->instate = XML_PARSER_EPILOG;
- } else if ((cur == '<') && (next == '!') &&
- (avail < 4)) {
- goto done;
- } else {
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "Extra content at the end of the documentn");
- ctxt->wellFormed = 0;
- ctxt->errNo = XML_ERR_DOCUMENT_END;
- ctxt->instate = XML_PARSER_EOF;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering EOFn");
- #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;
- htmlElemDescPtr info;
- if (avail < 2)
- goto done;
- cur = in->cur[0];
- if (cur != '<') {
- ctxt->instate = XML_PARSER_CONTENT;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering CONTENTn");
- #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)
- fprintf(stderr, "Start of element %sn", name);
- else if (name == NULL)
- fprintf(stderr, "Start of element failed, was %sn",
- oldname);
- else
- fprintf(stderr, "Start of element %s, was %sn",
- name, oldname);
- #endif
- if (((depth == ctxt->nameNr) &&
- (!xmlStrcmp(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 invalidn",
- name);
- ctxt->wellFormed = 0;
- } else if (info->depr) {
- /***************************
- if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL))
- ctxt->sax->warning(ctxt->userData,
- "Tag %s is deprecatedn",
- name);
- ***************************/
- }
- /*
- * Check for an Empty Element labelled 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
- fprintf(stderr,"End of tag the XML way: popping out %sn",
- oldname);
- #endif
- if (oldname != NULL)
- xmlFree(oldname);
- ctxt->instate = XML_PARSER_CONTENT;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering CONTENTn");
- #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 %sn",
- name);
- ctxt->wellFormed = 0;
- /*
- * end of parsing of this node.
- */
- if (!xmlStrcmp(name, ctxt->name)) {
- nodePop(ctxt);
- oldname = htmlnamePop(ctxt);
- #ifdef DEBUG
- fprintf(stderr,
- "End of start tag problem: popping out %sn", oldname);
- #endif
- if (oldname != NULL)
- xmlFree(oldname);
- }
- ctxt->instate = XML_PARSER_CONTENT;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering CONTENTn");
- #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
- fprintf(stderr,"End of empty tag %s : popping out %sn", name, oldname);
- #endif
- if (oldname != NULL)
- xmlFree(oldname);
- }
- ctxt->instate = XML_PARSER_CONTENT;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering CONTENTn");
- #endif
- break;
- }
- case XML_PARSER_CONTENT:
- /*
- * Handle preparsed entities and charRef
- */
- if (ctxt->token != 0) {
- xmlChar cur[2] = { 0 , 0 } ;
- cur[0] = (xmlChar) ctxt->token;
- if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
- ctxt->sax->characters(ctxt->userData, cur, 1);
- ctxt->token = 0;
- ctxt->checkIndex = 0;
- }
- 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
- fprintf(stderr, "HPP: Parsing Commentn");
- #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
- fprintf(stderr, "HPP: entering END_TAGn");
- #endif
- break;
- } else if (cur == '<') {
- ctxt->instate = XML_PARSER_START_TAG;
- ctxt->checkIndex = 0;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering START_TAGn");
- #endif
- break;
- } else if (cur == '&') {
- if ((!terminate) &&
- (htmlParseLookupSequence(ctxt, ';', 0, 0) < 0))
- goto done;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: Parsing Referencen");
- #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
- fprintf(stderr, "HPP: Parsing char datan");
- #endif
- htmlParseCharData(ctxt, 0);
- }
- 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
- fprintf(stderr, "HPP: entering CONTENTn");
- #endif
- break;
- case XML_PARSER_CDATA_SECTION:
- fprintf(stderr, "HPP: internal error, state == CDATAn");
- ctxt->instate = XML_PARSER_CONTENT;
- ctxt->checkIndex = 0;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering CONTENTn");
- #endif
- break;
- case XML_PARSER_DTD:
- fprintf(stderr, "HPP: internal error, state == DTDn");
- ctxt->instate = XML_PARSER_CONTENT;
- ctxt->checkIndex = 0;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering CONTENTn");
- #endif
- break;
- case XML_PARSER_COMMENT:
- fprintf(stderr, "HPP: internal error, state == COMMENTn");
- ctxt->instate = XML_PARSER_CONTENT;
- ctxt->checkIndex = 0;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering CONTENTn");
- #endif
- break;
- case XML_PARSER_PI:
- fprintf(stderr, "HPP: internal error, state == PIn");
- ctxt->instate = XML_PARSER_CONTENT;
- ctxt->checkIndex = 0;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering CONTENTn");
- #endif
- break;
- case XML_PARSER_ENTITY_DECL:
- fprintf(stderr, "HPP: internal error, state == ENTITY_DECLn");
- ctxt->instate = XML_PARSER_CONTENT;
- ctxt->checkIndex = 0;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering CONTENTn");
- #endif
- break;
- case XML_PARSER_ENTITY_VALUE:
- fprintf(stderr, "HPP: internal error, state == ENTITY_VALUEn");
- ctxt->instate = XML_PARSER_CONTENT;
- ctxt->checkIndex = 0;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering DTDn");
- #endif
- break;
- case XML_PARSER_ATTRIBUTE_VALUE:
- fprintf(stderr, "HPP: internal error, state == ATTRIBUTE_VALUEn");
- ctxt->instate = XML_PARSER_START_TAG;
- ctxt->checkIndex = 0;
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: entering START_TAGn");
- #endif
- break;
- }
- }
- done:
- #ifdef DEBUG_PUSH
- fprintf(stderr, "HPP: done %dn", ret);
- #endif
- return(ret);
- }
- /**
- * htmlParseTry:
- * @ctxt: an HTML parser context
- *
- * Try to progress on parsing
- *
- * Returns zero if no parsing was possible
- */
- int
- htmlParseTry(htmlParserCtxtPtr ctxt) {
- return(htmlParseTryOrFinish(ctxt, 0));
- }
- /**
- * 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
- fprintf(stderr, "HPP: pushed %dn", size);
- #endif
- if ((terminate) || (ctxt->input->buf->buffer->use > 80))
- htmlParseTryOrFinish(ctxt, terminate);
- } else if (ctxt->instate != XML_PARSER_EOF)
- htmlParseTryOrFinish(ctxt, terminate);
- if (terminate) {
- if ((ctxt->instate != XML_PARSER_EOF) &&
- (ctxt->instate != XML_PARSER_EPILOG) &&
- (ctxt->instate != XML_PARSER_MISC)) {
- if ((ctxt->sax != NULL) && (ctxt->sax->error != NULL))
- ctxt->sax->error(ctxt->userData,
- "Extra content at the end of the documentn");
- ctxt->wellFormed = 0;
- ctxt->errNo = XML_ERR_DOCUMENT_END;
- }
- 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;
- 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
- fprintf(stderr, "HPP: pushed %dn", 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 and build a tree.
- * 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
- */
- htmlDocPtr
- htmlSAXParseDoc(xmlChar *cur, const char *encoding, htmlSAXHandlerPtr sax, void *userData) {
- htmlDocPtr ret;
- htmlParserCtxtPtr ctxt;
- 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; */
- buf = xmlParserInputBufferCreateFilename(filename, XML_CHAR_ENCODING_NONE);
- if (buf == NULL) return(NULL);
- ctxt = (htmlParserCtxtPtr) xmlMalloc(sizeof(htmlParserCtxt));
- if (ctxt == NULL) {
- perror("malloc");
- return(NULL);
- }
- memset(ctxt, 0, sizeof(htmlParserCtxt));
- htmlInitParserCtxt(ctxt);
- inputStream = (htmlParserInputPtr) xmlMalloc(sizeof(htmlParserInput));
- if (inputStream == NULL) {
- perror("malloc");
- xmlFree(ctxt);
- return(NULL);
- }
- memset(inputStream, 0, sizeof(htmlParserInput));
- inputStream->filename = xmlMemStrdup(filename);
- inputStream->line = 1;
- inputStream->col = 1;
- inputStream->buf = buf;
- inputStream->directory = NULL;
- inputStream->base = inputStream->buf->buffer->content;
- inputStream->cur = inputStream->buf->buffer->content;
- inputStream->free = NULL;
- inputPush(ctxt, inputStream);
- 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
- */
- htmlDocPtr
- htmlSAXParseFile(const char *filename, const char *encoding, htmlSAXHandlerPtr sax,
- void *userData) {
- htmlDocPtr ret;
- htmlParserCtxtPtr ctxt;
- ctxt = htmlCreateFileParserCtxt(filename, 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);
- }
- /**
- * 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));
- }
- #endif /* LIBXML_HTML_ENABLED */