7288 lines
209 KiB
C
7288 lines
209 KiB
C
/*
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* HTMLparser.c : an HTML 4.0 non-verifying parser
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*
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* See Copyright for the status of this software.
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*
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* daniel@veillard.com
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*/
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#define IN_LIBXML
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#include "libxml.h"
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#ifdef LIBXML_HTML_ENABLED
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#include <string.h>
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#ifdef HAVE_CTYPE_H
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#include <ctype.h>
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef LIBXML_ZLIB_ENABLED
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#include <zlib.h>
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#endif
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#include <libxml/xmlmemory.h>
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#include <libxml/tree.h>
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#include <libxml/parser.h>
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#include <libxml/parserInternals.h>
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#include <libxml/xmlerror.h>
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#include <libxml/HTMLparser.h>
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#include <libxml/HTMLtree.h>
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#include <libxml/entities.h>
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#include <libxml/encoding.h>
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#include <libxml/valid.h>
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#include <libxml/xmlIO.h>
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#include <libxml/globals.h>
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#include <libxml/uri.h>
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#include "buf.h"
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#include "enc.h"
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#define HTML_MAX_NAMELEN 1000
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#define HTML_PARSER_BIG_BUFFER_SIZE 1000
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#define HTML_PARSER_BUFFER_SIZE 100
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/* #define DEBUG */
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/* #define DEBUG_PUSH */
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static int htmlOmittedDefaultValue = 1;
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xmlChar * htmlDecodeEntities(htmlParserCtxtPtr ctxt, int len,
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xmlChar end, xmlChar end2, xmlChar end3);
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static void htmlParseComment(htmlParserCtxtPtr ctxt);
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/************************************************************************
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* *
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* Some factorized error routines *
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* *
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************************************************************************/
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/**
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* htmlErrMemory:
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* @ctxt: an HTML parser context
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* @extra: extra information
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*
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* Handle a redefinition of attribute error
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*/
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static void
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htmlErrMemory(xmlParserCtxtPtr ctxt, const char *extra)
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{
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if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
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(ctxt->instate == XML_PARSER_EOF))
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return;
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if (ctxt != NULL) {
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ctxt->errNo = XML_ERR_NO_MEMORY;
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ctxt->instate = XML_PARSER_EOF;
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ctxt->disableSAX = 1;
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}
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if (extra)
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__xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER,
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XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, extra,
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NULL, NULL, 0, 0,
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"Memory allocation failed : %s\n", extra);
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else
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__xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER,
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XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, NULL,
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NULL, NULL, 0, 0, "Memory allocation failed\n");
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}
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/**
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* htmlParseErr:
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* @ctxt: an HTML parser context
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* @error: the error number
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* @msg: the error message
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* @str1: string infor
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* @str2: string infor
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*
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* Handle a fatal parser error, i.e. violating Well-Formedness constraints
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*/
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static void LIBXML_ATTR_FORMAT(3,0)
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htmlParseErr(xmlParserCtxtPtr ctxt, xmlParserErrors error,
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const char *msg, const xmlChar *str1, const xmlChar *str2)
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{
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if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
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(ctxt->instate == XML_PARSER_EOF))
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return;
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if (ctxt != NULL)
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ctxt->errNo = error;
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__xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_HTML, error,
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XML_ERR_ERROR, NULL, 0,
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(const char *) str1, (const char *) str2,
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NULL, 0, 0,
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msg, str1, str2);
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if (ctxt != NULL)
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ctxt->wellFormed = 0;
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}
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/**
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* htmlParseErrInt:
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* @ctxt: an HTML parser context
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* @error: the error number
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* @msg: the error message
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* @val: integer info
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*
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* Handle a fatal parser error, i.e. violating Well-Formedness constraints
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*/
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static void LIBXML_ATTR_FORMAT(3,0)
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htmlParseErrInt(xmlParserCtxtPtr ctxt, xmlParserErrors error,
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const char *msg, int val)
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{
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if ((ctxt != NULL) && (ctxt->disableSAX != 0) &&
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(ctxt->instate == XML_PARSER_EOF))
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return;
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if (ctxt != NULL)
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ctxt->errNo = error;
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__xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_HTML, error,
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XML_ERR_ERROR, NULL, 0, NULL, NULL,
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NULL, val, 0, msg, val);
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if (ctxt != NULL)
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ctxt->wellFormed = 0;
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}
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/************************************************************************
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* *
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* Parser stacks related functions and macros *
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* *
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************************************************************************/
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/**
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* htmlnamePush:
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* @ctxt: an HTML parser context
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* @value: the element name
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*
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* Pushes a new element name on top of the name stack
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*
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* Returns 0 in case of error, the index in the stack otherwise
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*/
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static int
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htmlnamePush(htmlParserCtxtPtr ctxt, const xmlChar * value)
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{
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if ((ctxt->html < 3) && (xmlStrEqual(value, BAD_CAST "head")))
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ctxt->html = 3;
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if ((ctxt->html < 10) && (xmlStrEqual(value, BAD_CAST "body")))
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ctxt->html = 10;
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if (ctxt->nameNr >= ctxt->nameMax) {
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ctxt->nameMax *= 2;
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ctxt->nameTab = (const xmlChar * *)
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xmlRealloc((xmlChar * *)ctxt->nameTab,
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ctxt->nameMax *
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sizeof(ctxt->nameTab[0]));
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if (ctxt->nameTab == NULL) {
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htmlErrMemory(ctxt, NULL);
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return (0);
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}
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}
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ctxt->nameTab[ctxt->nameNr] = value;
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ctxt->name = value;
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return (ctxt->nameNr++);
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}
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/**
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* htmlnamePop:
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* @ctxt: an HTML parser context
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*
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* Pops the top element name from the name stack
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*
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* Returns the name just removed
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*/
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static const xmlChar *
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htmlnamePop(htmlParserCtxtPtr ctxt)
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{
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const xmlChar *ret;
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if (ctxt->nameNr <= 0)
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return (NULL);
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ctxt->nameNr--;
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if (ctxt->nameNr < 0)
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return (NULL);
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if (ctxt->nameNr > 0)
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ctxt->name = ctxt->nameTab[ctxt->nameNr - 1];
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else
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ctxt->name = NULL;
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ret = ctxt->nameTab[ctxt->nameNr];
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ctxt->nameTab[ctxt->nameNr] = NULL;
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return (ret);
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}
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/**
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* htmlNodeInfoPush:
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* @ctxt: an HTML parser context
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* @value: the node info
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*
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* Pushes a new element name on top of the node info stack
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*
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* Returns 0 in case of error, the index in the stack otherwise
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*/
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static int
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htmlNodeInfoPush(htmlParserCtxtPtr ctxt, htmlParserNodeInfo *value)
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{
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if (ctxt->nodeInfoNr >= ctxt->nodeInfoMax) {
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if (ctxt->nodeInfoMax == 0)
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ctxt->nodeInfoMax = 5;
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ctxt->nodeInfoMax *= 2;
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ctxt->nodeInfoTab = (htmlParserNodeInfo *)
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xmlRealloc((htmlParserNodeInfo *)ctxt->nodeInfoTab,
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ctxt->nodeInfoMax *
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sizeof(ctxt->nodeInfoTab[0]));
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if (ctxt->nodeInfoTab == NULL) {
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htmlErrMemory(ctxt, NULL);
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return (0);
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}
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}
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ctxt->nodeInfoTab[ctxt->nodeInfoNr] = *value;
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ctxt->nodeInfo = &ctxt->nodeInfoTab[ctxt->nodeInfoNr];
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return (ctxt->nodeInfoNr++);
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}
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/**
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* htmlNodeInfoPop:
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* @ctxt: an HTML parser context
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*
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* Pops the top element name from the node info stack
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*
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* Returns 0 in case of error, the pointer to NodeInfo otherwise
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*/
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static htmlParserNodeInfo *
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htmlNodeInfoPop(htmlParserCtxtPtr ctxt)
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{
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if (ctxt->nodeInfoNr <= 0)
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return (NULL);
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ctxt->nodeInfoNr--;
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if (ctxt->nodeInfoNr < 0)
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return (NULL);
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if (ctxt->nodeInfoNr > 0)
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ctxt->nodeInfo = &ctxt->nodeInfoTab[ctxt->nodeInfoNr - 1];
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else
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ctxt->nodeInfo = NULL;
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return &ctxt->nodeInfoTab[ctxt->nodeInfoNr];
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}
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/*
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* Macros for accessing the content. Those should be used only by the parser,
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* and not exported.
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*
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* Dirty macros, i.e. one need to make assumption on the context to use them
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*
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* CUR_PTR return the current pointer to the xmlChar to be parsed.
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* CUR returns the current xmlChar value, i.e. a 8 bit value if compiled
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* in ISO-Latin or UTF-8, and the current 16 bit value if compiled
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* in UNICODE mode. This should be used internally by the parser
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* only to compare to ASCII values otherwise it would break when
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* running with UTF-8 encoding.
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* NXT(n) returns the n'th next xmlChar. Same as CUR is should be used only
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* to compare on ASCII based substring.
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* UPP(n) returns the n'th next xmlChar converted to uppercase. Same as CUR
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* it should be used only to compare on ASCII based substring.
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* SKIP(n) Skip n xmlChar, and must also be used only to skip ASCII defined
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* strings without newlines within the parser.
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*
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* Clean macros, not dependent of an ASCII context, expect UTF-8 encoding
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*
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* CURRENT Returns the current char value, with the full decoding of
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* UTF-8 if we are using this mode. It returns an int.
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* NEXT Skip to the next character, this does the proper decoding
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* in UTF-8 mode. It also pop-up unfinished entities on the fly.
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* NEXTL(l) Skip the current unicode character of l xmlChars long.
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* COPY(to) copy one char to *to, increment CUR_PTR and to accordingly
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*/
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#define UPPER (toupper(*ctxt->input->cur))
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#define SKIP(val) ctxt->input->cur += (val),ctxt->input->col+=(val)
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#define NXT(val) ctxt->input->cur[(val)]
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#define UPP(val) (toupper(ctxt->input->cur[(val)]))
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#define CUR_PTR ctxt->input->cur
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#define BASE_PTR ctxt->input->base
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#define SHRINK if ((ctxt->input->cur - ctxt->input->base > 2 * INPUT_CHUNK) && \
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(ctxt->input->end - ctxt->input->cur < 2 * INPUT_CHUNK)) \
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xmlParserInputShrink(ctxt->input)
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#define GROW if ((ctxt->progressive == 0) && \
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(ctxt->input->end - ctxt->input->cur < INPUT_CHUNK)) \
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xmlParserInputGrow(ctxt->input, INPUT_CHUNK)
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#define CURRENT ((int) (*ctxt->input->cur))
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#define SKIP_BLANKS htmlSkipBlankChars(ctxt)
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/* Imported from XML */
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/* #define CUR (ctxt->token ? ctxt->token : (int) (*ctxt->input->cur)) */
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#define CUR ((int) (*ctxt->input->cur))
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#define NEXT xmlNextChar(ctxt)
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#define RAW (ctxt->token ? -1 : (*ctxt->input->cur))
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#define NEXTL(l) do { \
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if (*(ctxt->input->cur) == '\n') { \
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ctxt->input->line++; ctxt->input->col = 1; \
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} else ctxt->input->col++; \
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ctxt->token = 0; ctxt->input->cur += l; \
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} while (0)
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/************
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\
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if (*ctxt->input->cur == '%') xmlParserHandlePEReference(ctxt); \
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if (*ctxt->input->cur == '&') xmlParserHandleReference(ctxt);
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************/
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#define CUR_CHAR(l) htmlCurrentChar(ctxt, &l)
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#define CUR_SCHAR(s, l) xmlStringCurrentChar(ctxt, s, &l)
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#define COPY_BUF(l,b,i,v) \
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if (l == 1) b[i++] = (xmlChar) v; \
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else i += xmlCopyChar(l,&b[i],v)
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|
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/**
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* htmlFindEncoding:
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* @the HTML parser context
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*
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* Ty to find and encoding in the current data available in the input
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* buffer this is needed to try to switch to the proper encoding when
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* one face a character error.
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* That's an heuristic, since it's operating outside of parsing it could
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* try to use a meta which had been commented out, that's the reason it
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* should only be used in case of error, not as a default.
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*
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* Returns an encoding string or NULL if not found, the string need to
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* be freed
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*/
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static xmlChar *
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htmlFindEncoding(xmlParserCtxtPtr ctxt) {
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const xmlChar *start, *cur, *end;
|
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|
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if ((ctxt == NULL) || (ctxt->input == NULL) ||
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(ctxt->input->encoding != NULL) || (ctxt->input->buf == NULL) ||
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(ctxt->input->buf->encoder != NULL))
|
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return(NULL);
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if ((ctxt->input->cur == NULL) || (ctxt->input->end == NULL))
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return(NULL);
|
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|
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start = ctxt->input->cur;
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end = ctxt->input->end;
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/* we also expect the input buffer to be zero terminated */
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if (*end != 0)
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return(NULL);
|
|
|
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cur = xmlStrcasestr(start, BAD_CAST "HTTP-EQUIV");
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if (cur == NULL)
|
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return(NULL);
|
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cur = xmlStrcasestr(cur, BAD_CAST "CONTENT");
|
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if (cur == NULL)
|
|
return(NULL);
|
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cur = xmlStrcasestr(cur, BAD_CAST "CHARSET=");
|
|
if (cur == NULL)
|
|
return(NULL);
|
|
cur += 8;
|
|
start = cur;
|
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while (((*cur >= 'A') && (*cur <= 'Z')) ||
|
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((*cur >= 'a') && (*cur <= 'z')) ||
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|
((*cur >= '0') && (*cur <= '9')) ||
|
|
(*cur == '-') || (*cur == '_') || (*cur == ':') || (*cur == '/'))
|
|
cur++;
|
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if (cur == start)
|
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return(NULL);
|
|
return(xmlStrndup(start, cur - start));
|
|
}
|
|
|
|
/**
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|
* htmlCurrentChar:
|
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* @ctxt: the HTML parser context
|
|
* @len: pointer to the length of the char read
|
|
*
|
|
* The current char value, if using UTF-8 this may actually span multiple
|
|
* bytes in the input buffer. Implement the end of line normalization:
|
|
* 2.11 End-of-Line Handling
|
|
* If the encoding is unspecified, in the case we find an ISO-Latin-1
|
|
* char, then the encoding converter is plugged in automatically.
|
|
*
|
|
* Returns the current char value and its length
|
|
*/
|
|
|
|
static int
|
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htmlCurrentChar(xmlParserCtxtPtr ctxt, int *len) {
|
|
const unsigned char *cur;
|
|
unsigned char c;
|
|
unsigned int val;
|
|
|
|
if (ctxt->instate == XML_PARSER_EOF)
|
|
return(0);
|
|
|
|
if (ctxt->token != 0) {
|
|
*len = 0;
|
|
return(ctxt->token);
|
|
}
|
|
if (ctxt->charset != XML_CHAR_ENCODING_UTF8) {
|
|
xmlChar * guess;
|
|
xmlCharEncodingHandlerPtr handler;
|
|
|
|
/*
|
|
* Assume it's a fixed length encoding (1) with
|
|
* a compatible encoding for the ASCII set, since
|
|
* HTML constructs only use < 128 chars
|
|
*/
|
|
if ((int) *ctxt->input->cur < 0x80) {
|
|
*len = 1;
|
|
if ((*ctxt->input->cur == 0) &&
|
|
(ctxt->input->cur < ctxt->input->end)) {
|
|
htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Char 0x%X out of allowed range\n", 0);
|
|
return(' ');
|
|
}
|
|
return((int) *ctxt->input->cur);
|
|
}
|
|
|
|
/*
|
|
* Humm this is bad, do an automatic flow conversion
|
|
*/
|
|
guess = htmlFindEncoding(ctxt);
|
|
if (guess == NULL) {
|
|
xmlSwitchEncoding(ctxt, XML_CHAR_ENCODING_8859_1);
|
|
} else {
|
|
if (ctxt->input->encoding != NULL)
|
|
xmlFree((xmlChar *) ctxt->input->encoding);
|
|
ctxt->input->encoding = guess;
|
|
handler = xmlFindCharEncodingHandler((const char *) guess);
|
|
if (handler != NULL) {
|
|
/*
|
|
* Don't use UTF-8 encoder which isn't required and
|
|
* can produce invalid UTF-8.
|
|
*/
|
|
if (!xmlStrEqual(BAD_CAST handler->name, BAD_CAST "UTF-8"))
|
|
xmlSwitchToEncoding(ctxt, handler);
|
|
} else {
|
|
htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
|
|
"Unsupported encoding %s", guess, NULL);
|
|
}
|
|
}
|
|
ctxt->charset = XML_CHAR_ENCODING_UTF8;
|
|
}
|
|
|
|
/*
|
|
* We are supposed to handle UTF8, check it's valid
|
|
* From rfc2044: encoding of the Unicode values on UTF-8:
|
|
*
|
|
* UCS-4 range (hex.) UTF-8 octet sequence (binary)
|
|
* 0000 0000-0000 007F 0xxxxxxx
|
|
* 0000 0080-0000 07FF 110xxxxx 10xxxxxx
|
|
* 0000 0800-0000 FFFF 1110xxxx 10xxxxxx 10xxxxxx
|
|
*
|
|
* Check for the 0x110000 limit too
|
|
*/
|
|
cur = ctxt->input->cur;
|
|
c = *cur;
|
|
if (c & 0x80) {
|
|
if ((c & 0x40) == 0)
|
|
goto encoding_error;
|
|
if (cur[1] == 0) {
|
|
xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
|
|
cur = ctxt->input->cur;
|
|
}
|
|
if ((cur[1] & 0xc0) != 0x80)
|
|
goto encoding_error;
|
|
if ((c & 0xe0) == 0xe0) {
|
|
|
|
if (cur[2] == 0) {
|
|
xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
|
|
cur = ctxt->input->cur;
|
|
}
|
|
if ((cur[2] & 0xc0) != 0x80)
|
|
goto encoding_error;
|
|
if ((c & 0xf0) == 0xf0) {
|
|
if (cur[3] == 0) {
|
|
xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
|
|
cur = ctxt->input->cur;
|
|
}
|
|
if (((c & 0xf8) != 0xf0) ||
|
|
((cur[3] & 0xc0) != 0x80))
|
|
goto encoding_error;
|
|
/* 4-byte code */
|
|
*len = 4;
|
|
val = (cur[0] & 0x7) << 18;
|
|
val |= (cur[1] & 0x3f) << 12;
|
|
val |= (cur[2] & 0x3f) << 6;
|
|
val |= cur[3] & 0x3f;
|
|
if (val < 0x10000)
|
|
goto encoding_error;
|
|
} else {
|
|
/* 3-byte code */
|
|
*len = 3;
|
|
val = (cur[0] & 0xf) << 12;
|
|
val |= (cur[1] & 0x3f) << 6;
|
|
val |= cur[2] & 0x3f;
|
|
if (val < 0x800)
|
|
goto encoding_error;
|
|
}
|
|
} else {
|
|
/* 2-byte code */
|
|
*len = 2;
|
|
val = (cur[0] & 0x1f) << 6;
|
|
val |= cur[1] & 0x3f;
|
|
if (val < 0x80)
|
|
goto encoding_error;
|
|
}
|
|
if (!IS_CHAR(val)) {
|
|
htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Char 0x%X out of allowed range\n", val);
|
|
}
|
|
return(val);
|
|
} else {
|
|
if ((*ctxt->input->cur == 0) &&
|
|
(ctxt->input->cur < ctxt->input->end)) {
|
|
htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Char 0x%X out of allowed range\n", 0);
|
|
*len = 1;
|
|
return(' ');
|
|
}
|
|
/* 1-byte code */
|
|
*len = 1;
|
|
return((int) *ctxt->input->cur);
|
|
}
|
|
|
|
encoding_error:
|
|
/*
|
|
* If we detect an UTF8 error that probably mean that the
|
|
* input encoding didn't get properly advertised in the
|
|
* declaration header. Report the error and switch the encoding
|
|
* to ISO-Latin-1 (if you don't like this policy, just declare the
|
|
* encoding !)
|
|
*/
|
|
{
|
|
char buffer[150];
|
|
|
|
if (ctxt->input->end - ctxt->input->cur >= 4) {
|
|
snprintf(buffer, 149, "Bytes: 0x%02X 0x%02X 0x%02X 0x%02X\n",
|
|
ctxt->input->cur[0], ctxt->input->cur[1],
|
|
ctxt->input->cur[2], ctxt->input->cur[3]);
|
|
} else {
|
|
snprintf(buffer, 149, "Bytes: 0x%02X\n", ctxt->input->cur[0]);
|
|
}
|
|
htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
|
|
"Input is not proper UTF-8, indicate encoding !\n",
|
|
BAD_CAST buffer, NULL);
|
|
}
|
|
|
|
/*
|
|
* Don't switch encodings twice. Note that if there's an encoder, we
|
|
* shouldn't receive invalid UTF-8 anyway.
|
|
*
|
|
* Note that if ctxt->input->buf == NULL, switching encodings is
|
|
* impossible, see Gitlab issue #34.
|
|
*/
|
|
if ((ctxt->input->buf != NULL) &&
|
|
(ctxt->input->buf->encoder == NULL))
|
|
xmlSwitchEncoding(ctxt, XML_CHAR_ENCODING_8859_1);
|
|
*len = 1;
|
|
return((int) *ctxt->input->cur);
|
|
}
|
|
|
|
/**
|
|
* htmlSkipBlankChars:
|
|
* @ctxt: the HTML parser context
|
|
*
|
|
* skip all blanks character found at that point in the input streams.
|
|
*
|
|
* Returns the number of space chars skipped
|
|
*/
|
|
|
|
static int
|
|
htmlSkipBlankChars(xmlParserCtxtPtr ctxt) {
|
|
int res = 0;
|
|
|
|
while (IS_BLANK_CH(*(ctxt->input->cur))) {
|
|
if ((*ctxt->input->cur == 0) &&
|
|
(xmlParserInputGrow(ctxt->input, INPUT_CHUNK) <= 0)) {
|
|
xmlPopInput(ctxt);
|
|
} else {
|
|
if (*(ctxt->input->cur) == '\n') {
|
|
ctxt->input->line++; ctxt->input->col = 1;
|
|
} else ctxt->input->col++;
|
|
ctxt->input->cur++;
|
|
if (*ctxt->input->cur == 0)
|
|
xmlParserInputGrow(ctxt->input, INPUT_CHUNK);
|
|
}
|
|
res++;
|
|
}
|
|
return(res);
|
|
}
|
|
|
|
|
|
|
|
/************************************************************************
|
|
* *
|
|
* The list of HTML elements and their properties *
|
|
* *
|
|
************************************************************************/
|
|
|
|
/*
|
|
* Start Tag: 1 means the start tag can be omitted
|
|
* End Tag: 1 means the end tag can be omitted
|
|
* 2 means it's forbidden (empty elements)
|
|
* 3 means the tag is stylistic and should be closed easily
|
|
* Depr: this element is deprecated
|
|
* DTD: 1 means that this element is valid only in the Loose DTD
|
|
* 2 means that this element is valid only in the Frameset DTD
|
|
*
|
|
* Name,Start Tag,End Tag,Save End,Empty,Deprecated,DTD,inline,Description
|
|
, subElements , impliedsubelt , Attributes, userdata
|
|
*/
|
|
|
|
/* Definitions and a couple of vars for HTML Elements */
|
|
|
|
#define FONTSTYLE "tt", "i", "b", "u", "s", "strike", "big", "small"
|
|
#define NB_FONTSTYLE 8
|
|
#define PHRASE "em", "strong", "dfn", "code", "samp", "kbd", "var", "cite", "abbr", "acronym"
|
|
#define NB_PHRASE 10
|
|
#define SPECIAL "a", "img", "applet", "embed", "object", "font", "basefont", "br", "script", "map", "q", "sub", "sup", "span", "bdo", "iframe"
|
|
#define NB_SPECIAL 16
|
|
#define INLINE FONTSTYLE, PHRASE, SPECIAL, FORMCTRL
|
|
#define NB_INLINE NB_PCDATA + NB_FONTSTYLE + NB_PHRASE + NB_SPECIAL + NB_FORMCTRL
|
|
#define BLOCK HEADING, LIST, "pre", "p", "dl", "div", "center", "noscript", "noframes", "blockquote", "form", "isindex", "hr", "table", "fieldset", "address"
|
|
#define NB_BLOCK NB_HEADING + NB_LIST + 14
|
|
#define FORMCTRL "input", "select", "textarea", "label", "button"
|
|
#define NB_FORMCTRL 5
|
|
#define PCDATA
|
|
#define NB_PCDATA 0
|
|
#define HEADING "h1", "h2", "h3", "h4", "h5", "h6"
|
|
#define NB_HEADING 6
|
|
#define LIST "ul", "ol", "dir", "menu"
|
|
#define NB_LIST 4
|
|
#define MODIFIER
|
|
#define NB_MODIFIER 0
|
|
#define FLOW BLOCK,INLINE
|
|
#define NB_FLOW NB_BLOCK + NB_INLINE
|
|
#define EMPTY NULL
|
|
|
|
|
|
static const char* const html_flow[] = { FLOW, NULL } ;
|
|
static const char* const html_inline[] = { INLINE, NULL } ;
|
|
|
|
/* placeholders: elts with content but no subelements */
|
|
static const char* const html_pcdata[] = { NULL } ;
|
|
#define html_cdata html_pcdata
|
|
|
|
|
|
/* ... and for HTML Attributes */
|
|
|
|
#define COREATTRS "id", "class", "style", "title"
|
|
#define NB_COREATTRS 4
|
|
#define I18N "lang", "dir"
|
|
#define NB_I18N 2
|
|
#define EVENTS "onclick", "ondblclick", "onmousedown", "onmouseup", "onmouseover", "onmouseout", "onkeypress", "onkeydown", "onkeyup"
|
|
#define NB_EVENTS 9
|
|
#define ATTRS COREATTRS,I18N,EVENTS
|
|
#define NB_ATTRS NB_NB_COREATTRS + NB_I18N + NB_EVENTS
|
|
#define CELLHALIGN "align", "char", "charoff"
|
|
#define NB_CELLHALIGN 3
|
|
#define CELLVALIGN "valign"
|
|
#define NB_CELLVALIGN 1
|
|
|
|
static const char* const html_attrs[] = { ATTRS, NULL } ;
|
|
static const char* const core_i18n_attrs[] = { COREATTRS, I18N, NULL } ;
|
|
static const char* const core_attrs[] = { COREATTRS, NULL } ;
|
|
static const char* const i18n_attrs[] = { I18N, NULL } ;
|
|
|
|
|
|
/* Other declarations that should go inline ... */
|
|
static const char* const a_attrs[] = { ATTRS, "charset", "type", "name",
|
|
"href", "hreflang", "rel", "rev", "accesskey", "shape", "coords",
|
|
"tabindex", "onfocus", "onblur", NULL } ;
|
|
static const char* const target_attr[] = { "target", NULL } ;
|
|
static const char* const rows_cols_attr[] = { "rows", "cols", NULL } ;
|
|
static const char* const alt_attr[] = { "alt", NULL } ;
|
|
static const char* const src_alt_attrs[] = { "src", "alt", NULL } ;
|
|
static const char* const href_attrs[] = { "href", NULL } ;
|
|
static const char* const clear_attrs[] = { "clear", NULL } ;
|
|
static const char* const inline_p[] = { INLINE, "p", NULL } ;
|
|
|
|
static const char* const flow_param[] = { FLOW, "param", NULL } ;
|
|
static const char* const applet_attrs[] = { COREATTRS , "codebase",
|
|
"archive", "alt", "name", "height", "width", "align",
|
|
"hspace", "vspace", NULL } ;
|
|
static const char* const area_attrs[] = { "shape", "coords", "href", "nohref",
|
|
"tabindex", "accesskey", "onfocus", "onblur", NULL } ;
|
|
static const char* const basefont_attrs[] =
|
|
{ "id", "size", "color", "face", NULL } ;
|
|
static const char* const quote_attrs[] = { ATTRS, "cite", NULL } ;
|
|
static const char* const body_contents[] = { FLOW, "ins", "del", NULL } ;
|
|
static const char* const body_attrs[] = { ATTRS, "onload", "onunload", NULL } ;
|
|
static const char* const body_depr[] = { "background", "bgcolor", "text",
|
|
"link", "vlink", "alink", NULL } ;
|
|
static const char* const button_attrs[] = { ATTRS, "name", "value", "type",
|
|
"disabled", "tabindex", "accesskey", "onfocus", "onblur", NULL } ;
|
|
|
|
|
|
static const char* const col_attrs[] = { ATTRS, "span", "width", CELLHALIGN, CELLVALIGN, NULL } ;
|
|
static const char* const col_elt[] = { "col", NULL } ;
|
|
static const char* const edit_attrs[] = { ATTRS, "datetime", "cite", NULL } ;
|
|
static const char* const compact_attrs[] = { ATTRS, "compact", NULL } ;
|
|
static const char* const dl_contents[] = { "dt", "dd", NULL } ;
|
|
static const char* const compact_attr[] = { "compact", NULL } ;
|
|
static const char* const label_attr[] = { "label", NULL } ;
|
|
static const char* const fieldset_contents[] = { FLOW, "legend" } ;
|
|
static const char* const font_attrs[] = { COREATTRS, I18N, "size", "color", "face" , NULL } ;
|
|
static const char* const form_contents[] = { HEADING, LIST, INLINE, "pre", "p", "div", "center", "noscript", "noframes", "blockquote", "isindex", "hr", "table", "fieldset", "address", NULL } ;
|
|
static const char* const form_attrs[] = { ATTRS, "method", "enctype", "accept", "name", "onsubmit", "onreset", "accept-charset", NULL } ;
|
|
static const char* const frame_attrs[] = { COREATTRS, "longdesc", "name", "src", "frameborder", "marginwidth", "marginheight", "noresize", "scrolling" , NULL } ;
|
|
static const char* const frameset_attrs[] = { COREATTRS, "rows", "cols", "onload", "onunload", NULL } ;
|
|
static const char* const frameset_contents[] = { "frameset", "frame", "noframes", NULL } ;
|
|
static const char* const head_attrs[] = { I18N, "profile", NULL } ;
|
|
static const char* const head_contents[] = { "title", "isindex", "base", "script", "style", "meta", "link", "object", NULL } ;
|
|
static const char* const hr_depr[] = { "align", "noshade", "size", "width", NULL } ;
|
|
static const char* const version_attr[] = { "version", NULL } ;
|
|
static const char* const html_content[] = { "head", "body", "frameset", NULL } ;
|
|
static const char* const iframe_attrs[] = { COREATTRS, "longdesc", "name", "src", "frameborder", "marginwidth", "marginheight", "scrolling", "align", "height", "width", NULL } ;
|
|
static const char* const img_attrs[] = { ATTRS, "longdesc", "name", "height", "width", "usemap", "ismap", NULL } ;
|
|
static const char* const embed_attrs[] = { COREATTRS, "align", "alt", "border", "code", "codebase", "frameborder", "height", "hidden", "hspace", "name", "palette", "pluginspace", "pluginurl", "src", "type", "units", "vspace", "width", NULL } ;
|
|
static const char* const input_attrs[] = { ATTRS, "type", "name", "value", "checked", "disabled", "readonly", "size", "maxlength", "src", "alt", "usemap", "ismap", "tabindex", "accesskey", "onfocus", "onblur", "onselect", "onchange", "accept", NULL } ;
|
|
static const char* const prompt_attrs[] = { COREATTRS, I18N, "prompt", NULL } ;
|
|
static const char* const label_attrs[] = { ATTRS, "for", "accesskey", "onfocus", "onblur", NULL } ;
|
|
static const char* const legend_attrs[] = { ATTRS, "accesskey", NULL } ;
|
|
static const char* const align_attr[] = { "align", NULL } ;
|
|
static const char* const link_attrs[] = { ATTRS, "charset", "href", "hreflang", "type", "rel", "rev", "media", NULL } ;
|
|
static const char* const map_contents[] = { BLOCK, "area", NULL } ;
|
|
static const char* const name_attr[] = { "name", NULL } ;
|
|
static const char* const action_attr[] = { "action", NULL } ;
|
|
static const char* const blockli_elt[] = { BLOCK, "li", NULL } ;
|
|
static const char* const meta_attrs[] = { I18N, "http-equiv", "name", "scheme", "charset", NULL } ;
|
|
static const char* const content_attr[] = { "content", NULL } ;
|
|
static const char* const type_attr[] = { "type", NULL } ;
|
|
static const char* const noframes_content[] = { "body", FLOW MODIFIER, NULL } ;
|
|
static const char* const object_contents[] = { FLOW, "param", NULL } ;
|
|
static const char* const object_attrs[] = { ATTRS, "declare", "classid", "codebase", "data", "type", "codetype", "archive", "standby", "height", "width", "usemap", "name", "tabindex", NULL } ;
|
|
static const char* const object_depr[] = { "align", "border", "hspace", "vspace", NULL } ;
|
|
static const char* const ol_attrs[] = { "type", "compact", "start", NULL} ;
|
|
static const char* const option_elt[] = { "option", NULL } ;
|
|
static const char* const optgroup_attrs[] = { ATTRS, "disabled", NULL } ;
|
|
static const char* const option_attrs[] = { ATTRS, "disabled", "label", "selected", "value", NULL } ;
|
|
static const char* const param_attrs[] = { "id", "value", "valuetype", "type", NULL } ;
|
|
static const char* const width_attr[] = { "width", NULL } ;
|
|
static const char* const pre_content[] = { PHRASE, "tt", "i", "b", "u", "s", "strike", "a", "br", "script", "map", "q", "span", "bdo", "iframe", NULL } ;
|
|
static const char* const script_attrs[] = { "charset", "src", "defer", "event", "for", NULL } ;
|
|
static const char* const language_attr[] = { "language", NULL } ;
|
|
static const char* const select_content[] = { "optgroup", "option", NULL } ;
|
|
static const char* const select_attrs[] = { ATTRS, "name", "size", "multiple", "disabled", "tabindex", "onfocus", "onblur", "onchange", NULL } ;
|
|
static const char* const style_attrs[] = { I18N, "media", "title", NULL } ;
|
|
static const char* const table_attrs[] = { ATTRS, "summary", "width", "border", "frame", "rules", "cellspacing", "cellpadding", "datapagesize", NULL } ;
|
|
static const char* const table_depr[] = { "align", "bgcolor", NULL } ;
|
|
static const char* const table_contents[] = { "caption", "col", "colgroup", "thead", "tfoot", "tbody", "tr", NULL} ;
|
|
static const char* const tr_elt[] = { "tr", NULL } ;
|
|
static const char* const talign_attrs[] = { ATTRS, CELLHALIGN, CELLVALIGN, NULL} ;
|
|
static const char* const th_td_depr[] = { "nowrap", "bgcolor", "width", "height", NULL } ;
|
|
static const char* const th_td_attr[] = { ATTRS, "abbr", "axis", "headers", "scope", "rowspan", "colspan", CELLHALIGN, CELLVALIGN, NULL } ;
|
|
static const char* const textarea_attrs[] = { ATTRS, "name", "disabled", "readonly", "tabindex", "accesskey", "onfocus", "onblur", "onselect", "onchange", NULL } ;
|
|
static const char* const tr_contents[] = { "th", "td", NULL } ;
|
|
static const char* const bgcolor_attr[] = { "bgcolor", NULL } ;
|
|
static const char* const li_elt[] = { "li", NULL } ;
|
|
static const char* const ul_depr[] = { "type", "compact", NULL} ;
|
|
static const char* const dir_attr[] = { "dir", NULL} ;
|
|
|
|
#define DECL (const char**)
|
|
|
|
static const htmlElemDesc
|
|
html40ElementTable[] = {
|
|
{ "a", 0, 0, 0, 0, 0, 0, 1, "anchor ",
|
|
DECL html_inline , NULL , DECL a_attrs , DECL target_attr, NULL
|
|
},
|
|
{ "abbr", 0, 0, 0, 0, 0, 0, 1, "abbreviated form",
|
|
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "acronym", 0, 0, 0, 0, 0, 0, 1, "",
|
|
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "address", 0, 0, 0, 0, 0, 0, 0, "information on author ",
|
|
DECL inline_p , NULL , DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "applet", 0, 0, 0, 0, 1, 1, 2, "java applet ",
|
|
DECL flow_param , NULL , NULL , DECL applet_attrs, NULL
|
|
},
|
|
{ "area", 0, 2, 2, 1, 0, 0, 0, "client-side image map area ",
|
|
EMPTY , NULL , DECL area_attrs , DECL target_attr, DECL alt_attr
|
|
},
|
|
{ "b", 0, 3, 0, 0, 0, 0, 1, "bold text style",
|
|
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "base", 0, 2, 2, 1, 0, 0, 0, "document base uri ",
|
|
EMPTY , NULL , NULL , DECL target_attr, DECL href_attrs
|
|
},
|
|
{ "basefont", 0, 2, 2, 1, 1, 1, 1, "base font size " ,
|
|
EMPTY , NULL , NULL, DECL basefont_attrs, NULL
|
|
},
|
|
{ "bdo", 0, 0, 0, 0, 0, 0, 1, "i18n bidi over-ride ",
|
|
DECL html_inline , NULL , DECL core_i18n_attrs, NULL, DECL dir_attr
|
|
},
|
|
{ "big", 0, 3, 0, 0, 0, 0, 1, "large text style",
|
|
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "blockquote", 0, 0, 0, 0, 0, 0, 0, "long quotation ",
|
|
DECL html_flow , NULL , DECL quote_attrs , NULL, NULL
|
|
},
|
|
{ "body", 1, 1, 0, 0, 0, 0, 0, "document body ",
|
|
DECL body_contents , "div" , DECL body_attrs, DECL body_depr, NULL
|
|
},
|
|
{ "br", 0, 2, 2, 1, 0, 0, 1, "forced line break ",
|
|
EMPTY , NULL , DECL core_attrs, DECL clear_attrs , NULL
|
|
},
|
|
{ "button", 0, 0, 0, 0, 0, 0, 2, "push button ",
|
|
DECL html_flow MODIFIER , NULL , DECL button_attrs, NULL, NULL
|
|
},
|
|
{ "caption", 0, 0, 0, 0, 0, 0, 0, "table caption ",
|
|
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "center", 0, 3, 0, 0, 1, 1, 0, "shorthand for div align=center ",
|
|
DECL html_flow , NULL , NULL, DECL html_attrs, NULL
|
|
},
|
|
{ "cite", 0, 0, 0, 0, 0, 0, 1, "citation",
|
|
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "code", 0, 0, 0, 0, 0, 0, 1, "computer code fragment",
|
|
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "col", 0, 2, 2, 1, 0, 0, 0, "table column ",
|
|
EMPTY , NULL , DECL col_attrs , NULL, NULL
|
|
},
|
|
{ "colgroup", 0, 1, 0, 0, 0, 0, 0, "table column group ",
|
|
DECL col_elt , "col" , DECL col_attrs , NULL, NULL
|
|
},
|
|
{ "dd", 0, 1, 0, 0, 0, 0, 0, "definition description ",
|
|
DECL html_flow , NULL , DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "del", 0, 0, 0, 0, 0, 0, 2, "deleted text ",
|
|
DECL html_flow , NULL , DECL edit_attrs , NULL, NULL
|
|
},
|
|
{ "dfn", 0, 0, 0, 0, 0, 0, 1, "instance definition",
|
|
DECL html_inline , NULL , DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "dir", 0, 0, 0, 0, 1, 1, 0, "directory list",
|
|
DECL blockli_elt, "li" , NULL, DECL compact_attrs, NULL
|
|
},
|
|
{ "div", 0, 0, 0, 0, 0, 0, 0, "generic language/style container",
|
|
DECL html_flow, NULL, DECL html_attrs, DECL align_attr, NULL
|
|
},
|
|
{ "dl", 0, 0, 0, 0, 0, 0, 0, "definition list ",
|
|
DECL dl_contents , "dd" , DECL html_attrs, DECL compact_attr, NULL
|
|
},
|
|
{ "dt", 0, 1, 0, 0, 0, 0, 0, "definition term ",
|
|
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "em", 0, 3, 0, 0, 0, 0, 1, "emphasis",
|
|
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "embed", 0, 1, 0, 0, 1, 1, 1, "generic embedded object ",
|
|
EMPTY, NULL, DECL embed_attrs, NULL, NULL
|
|
},
|
|
{ "fieldset", 0, 0, 0, 0, 0, 0, 0, "form control group ",
|
|
DECL fieldset_contents , NULL, DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "font", 0, 3, 0, 0, 1, 1, 1, "local change to font ",
|
|
DECL html_inline, NULL, NULL, DECL font_attrs, NULL
|
|
},
|
|
{ "form", 0, 0, 0, 0, 0, 0, 0, "interactive form ",
|
|
DECL form_contents, "fieldset", DECL form_attrs , DECL target_attr, DECL action_attr
|
|
},
|
|
{ "frame", 0, 2, 2, 1, 0, 2, 0, "subwindow " ,
|
|
EMPTY, NULL, NULL, DECL frame_attrs, NULL
|
|
},
|
|
{ "frameset", 0, 0, 0, 0, 0, 2, 0, "window subdivision" ,
|
|
DECL frameset_contents, "noframes" , NULL , DECL frameset_attrs, NULL
|
|
},
|
|
{ "h1", 0, 0, 0, 0, 0, 0, 0, "heading ",
|
|
DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
|
|
},
|
|
{ "h2", 0, 0, 0, 0, 0, 0, 0, "heading ",
|
|
DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
|
|
},
|
|
{ "h3", 0, 0, 0, 0, 0, 0, 0, "heading ",
|
|
DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
|
|
},
|
|
{ "h4", 0, 0, 0, 0, 0, 0, 0, "heading ",
|
|
DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
|
|
},
|
|
{ "h5", 0, 0, 0, 0, 0, 0, 0, "heading ",
|
|
DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
|
|
},
|
|
{ "h6", 0, 0, 0, 0, 0, 0, 0, "heading ",
|
|
DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
|
|
},
|
|
{ "head", 1, 1, 0, 0, 0, 0, 0, "document head ",
|
|
DECL head_contents, NULL, DECL head_attrs, NULL, NULL
|
|
},
|
|
{ "hr", 0, 2, 2, 1, 0, 0, 0, "horizontal rule " ,
|
|
EMPTY, NULL, DECL html_attrs, DECL hr_depr, NULL
|
|
},
|
|
{ "html", 1, 1, 0, 0, 0, 0, 0, "document root element ",
|
|
DECL html_content , NULL , DECL i18n_attrs, DECL version_attr, NULL
|
|
},
|
|
{ "i", 0, 3, 0, 0, 0, 0, 1, "italic text style",
|
|
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "iframe", 0, 0, 0, 0, 0, 1, 2, "inline subwindow ",
|
|
DECL html_flow, NULL, NULL, DECL iframe_attrs, NULL
|
|
},
|
|
{ "img", 0, 2, 2, 1, 0, 0, 1, "embedded image ",
|
|
EMPTY, NULL, DECL img_attrs, DECL align_attr, DECL src_alt_attrs
|
|
},
|
|
{ "input", 0, 2, 2, 1, 0, 0, 1, "form control ",
|
|
EMPTY, NULL, DECL input_attrs , DECL align_attr, NULL
|
|
},
|
|
{ "ins", 0, 0, 0, 0, 0, 0, 2, "inserted text",
|
|
DECL html_flow, NULL, DECL edit_attrs, NULL, NULL
|
|
},
|
|
{ "isindex", 0, 2, 2, 1, 1, 1, 0, "single line prompt ",
|
|
EMPTY, NULL, NULL, DECL prompt_attrs, NULL
|
|
},
|
|
{ "kbd", 0, 0, 0, 0, 0, 0, 1, "text to be entered by the user",
|
|
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "label", 0, 0, 0, 0, 0, 0, 1, "form field label text ",
|
|
DECL html_inline MODIFIER, NULL, DECL label_attrs , NULL, NULL
|
|
},
|
|
{ "legend", 0, 0, 0, 0, 0, 0, 0, "fieldset legend ",
|
|
DECL html_inline, NULL, DECL legend_attrs , DECL align_attr, NULL
|
|
},
|
|
{ "li", 0, 1, 1, 0, 0, 0, 0, "list item ",
|
|
DECL html_flow, NULL, DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "link", 0, 2, 2, 1, 0, 0, 0, "a media-independent link ",
|
|
EMPTY, NULL, DECL link_attrs, DECL target_attr, NULL
|
|
},
|
|
{ "map", 0, 0, 0, 0, 0, 0, 2, "client-side image map ",
|
|
DECL map_contents , NULL, DECL html_attrs , NULL, DECL name_attr
|
|
},
|
|
{ "menu", 0, 0, 0, 0, 1, 1, 0, "menu list ",
|
|
DECL blockli_elt , NULL, NULL, DECL compact_attrs, NULL
|
|
},
|
|
{ "meta", 0, 2, 2, 1, 0, 0, 0, "generic metainformation ",
|
|
EMPTY, NULL, DECL meta_attrs , NULL , DECL content_attr
|
|
},
|
|
{ "noframes", 0, 0, 0, 0, 0, 2, 0, "alternate content container for non frame-based rendering ",
|
|
DECL noframes_content, "body" , DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "noscript", 0, 0, 0, 0, 0, 0, 0, "alternate content container for non script-based rendering ",
|
|
DECL html_flow, "div", DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "object", 0, 0, 0, 0, 0, 0, 2, "generic embedded object ",
|
|
DECL object_contents , "div" , DECL object_attrs, DECL object_depr, NULL
|
|
},
|
|
{ "ol", 0, 0, 0, 0, 0, 0, 0, "ordered list ",
|
|
DECL li_elt , "li" , DECL html_attrs, DECL ol_attrs, NULL
|
|
},
|
|
{ "optgroup", 0, 0, 0, 0, 0, 0, 0, "option group ",
|
|
DECL option_elt , "option", DECL optgroup_attrs, NULL, DECL label_attr
|
|
},
|
|
{ "option", 0, 1, 0, 0, 0, 0, 0, "selectable choice " ,
|
|
DECL html_pcdata, NULL, DECL option_attrs, NULL, NULL
|
|
},
|
|
{ "p", 0, 1, 0, 0, 0, 0, 0, "paragraph ",
|
|
DECL html_inline, NULL, DECL html_attrs, DECL align_attr, NULL
|
|
},
|
|
{ "param", 0, 2, 2, 1, 0, 0, 0, "named property value ",
|
|
EMPTY, NULL, DECL param_attrs, NULL, DECL name_attr
|
|
},
|
|
{ "pre", 0, 0, 0, 0, 0, 0, 0, "preformatted text ",
|
|
DECL pre_content, NULL, DECL html_attrs, DECL width_attr, NULL
|
|
},
|
|
{ "q", 0, 0, 0, 0, 0, 0, 1, "short inline quotation ",
|
|
DECL html_inline, NULL, DECL quote_attrs, NULL, NULL
|
|
},
|
|
{ "s", 0, 3, 0, 0, 1, 1, 1, "strike-through text style",
|
|
DECL html_inline, NULL, NULL, DECL html_attrs, NULL
|
|
},
|
|
{ "samp", 0, 0, 0, 0, 0, 0, 1, "sample program output, scripts, etc.",
|
|
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "script", 0, 0, 0, 0, 0, 0, 2, "script statements ",
|
|
DECL html_cdata, NULL, DECL script_attrs, DECL language_attr, DECL type_attr
|
|
},
|
|
{ "select", 0, 0, 0, 0, 0, 0, 1, "option selector ",
|
|
DECL select_content, NULL, DECL select_attrs, NULL, NULL
|
|
},
|
|
{ "small", 0, 3, 0, 0, 0, 0, 1, "small text style",
|
|
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "span", 0, 0, 0, 0, 0, 0, 1, "generic language/style container ",
|
|
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "strike", 0, 3, 0, 0, 1, 1, 1, "strike-through text",
|
|
DECL html_inline, NULL, NULL, DECL html_attrs, NULL
|
|
},
|
|
{ "strong", 0, 3, 0, 0, 0, 0, 1, "strong emphasis",
|
|
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "style", 0, 0, 0, 0, 0, 0, 0, "style info ",
|
|
DECL html_cdata, NULL, DECL style_attrs, NULL, DECL type_attr
|
|
},
|
|
{ "sub", 0, 3, 0, 0, 0, 0, 1, "subscript",
|
|
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "sup", 0, 3, 0, 0, 0, 0, 1, "superscript ",
|
|
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "table", 0, 0, 0, 0, 0, 0, 0, "",
|
|
DECL table_contents , "tr" , DECL table_attrs , DECL table_depr, NULL
|
|
},
|
|
{ "tbody", 1, 0, 0, 0, 0, 0, 0, "table body ",
|
|
DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL
|
|
},
|
|
{ "td", 0, 0, 0, 0, 0, 0, 0, "table data cell",
|
|
DECL html_flow, NULL, DECL th_td_attr, DECL th_td_depr, NULL
|
|
},
|
|
{ "textarea", 0, 0, 0, 0, 0, 0, 1, "multi-line text field ",
|
|
DECL html_pcdata, NULL, DECL textarea_attrs, NULL, DECL rows_cols_attr
|
|
},
|
|
{ "tfoot", 0, 1, 0, 0, 0, 0, 0, "table footer ",
|
|
DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL
|
|
},
|
|
{ "th", 0, 1, 0, 0, 0, 0, 0, "table header cell",
|
|
DECL html_flow, NULL, DECL th_td_attr, DECL th_td_depr, NULL
|
|
},
|
|
{ "thead", 0, 1, 0, 0, 0, 0, 0, "table header ",
|
|
DECL tr_elt , "tr" , DECL talign_attrs, NULL, NULL
|
|
},
|
|
{ "title", 0, 0, 0, 0, 0, 0, 0, "document title ",
|
|
DECL html_pcdata, NULL, DECL i18n_attrs, NULL, NULL
|
|
},
|
|
{ "tr", 0, 0, 0, 0, 0, 0, 0, "table row ",
|
|
DECL tr_contents , "td" , DECL talign_attrs, DECL bgcolor_attr, NULL
|
|
},
|
|
{ "tt", 0, 3, 0, 0, 0, 0, 1, "teletype or monospaced text style",
|
|
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
|
|
},
|
|
{ "u", 0, 3, 0, 0, 1, 1, 1, "underlined text style",
|
|
DECL html_inline, NULL, NULL, DECL html_attrs, NULL
|
|
},
|
|
{ "ul", 0, 0, 0, 0, 0, 0, 0, "unordered list ",
|
|
DECL li_elt , "li" , DECL html_attrs, DECL ul_depr, NULL
|
|
},
|
|
{ "var", 0, 0, 0, 0, 0, 0, 1, "instance of a variable or program argument",
|
|
DECL html_inline, NULL, DECL html_attrs, NULL, NULL
|
|
}
|
|
};
|
|
|
|
typedef struct {
|
|
const char *oldTag;
|
|
const char *newTag;
|
|
} htmlStartCloseEntry;
|
|
|
|
/*
|
|
* start tags that imply the end of current element
|
|
*/
|
|
static const htmlStartCloseEntry htmlStartClose[] = {
|
|
{ "a", "a" },
|
|
{ "a", "fieldset" },
|
|
{ "a", "table" },
|
|
{ "a", "td" },
|
|
{ "a", "th" },
|
|
{ "address", "dd" },
|
|
{ "address", "dl" },
|
|
{ "address", "dt" },
|
|
{ "address", "form" },
|
|
{ "address", "li" },
|
|
{ "address", "ul" },
|
|
{ "b", "center" },
|
|
{ "b", "p" },
|
|
{ "b", "td" },
|
|
{ "b", "th" },
|
|
{ "big", "p" },
|
|
{ "caption", "col" },
|
|
{ "caption", "colgroup" },
|
|
{ "caption", "tbody" },
|
|
{ "caption", "tfoot" },
|
|
{ "caption", "thead" },
|
|
{ "caption", "tr" },
|
|
{ "col", "col" },
|
|
{ "col", "colgroup" },
|
|
{ "col", "tbody" },
|
|
{ "col", "tfoot" },
|
|
{ "col", "thead" },
|
|
{ "col", "tr" },
|
|
{ "colgroup", "colgroup" },
|
|
{ "colgroup", "tbody" },
|
|
{ "colgroup", "tfoot" },
|
|
{ "colgroup", "thead" },
|
|
{ "colgroup", "tr" },
|
|
{ "dd", "dt" },
|
|
{ "dir", "dd" },
|
|
{ "dir", "dl" },
|
|
{ "dir", "dt" },
|
|
{ "dir", "form" },
|
|
{ "dir", "ul" },
|
|
{ "dl", "form" },
|
|
{ "dl", "li" },
|
|
{ "dt", "dd" },
|
|
{ "dt", "dl" },
|
|
{ "font", "center" },
|
|
{ "font", "td" },
|
|
{ "font", "th" },
|
|
{ "form", "form" },
|
|
{ "h1", "fieldset" },
|
|
{ "h1", "form" },
|
|
{ "h1", "li" },
|
|
{ "h1", "p" },
|
|
{ "h1", "table" },
|
|
{ "h2", "fieldset" },
|
|
{ "h2", "form" },
|
|
{ "h2", "li" },
|
|
{ "h2", "p" },
|
|
{ "h2", "table" },
|
|
{ "h3", "fieldset" },
|
|
{ "h3", "form" },
|
|
{ "h3", "li" },
|
|
{ "h3", "p" },
|
|
{ "h3", "table" },
|
|
{ "h4", "fieldset" },
|
|
{ "h4", "form" },
|
|
{ "h4", "li" },
|
|
{ "h4", "p" },
|
|
{ "h4", "table" },
|
|
{ "h5", "fieldset" },
|
|
{ "h5", "form" },
|
|
{ "h5", "li" },
|
|
{ "h5", "p" },
|
|
{ "h5", "table" },
|
|
{ "h6", "fieldset" },
|
|
{ "h6", "form" },
|
|
{ "h6", "li" },
|
|
{ "h6", "p" },
|
|
{ "h6", "table" },
|
|
{ "head", "a" },
|
|
{ "head", "abbr" },
|
|
{ "head", "acronym" },
|
|
{ "head", "address" },
|
|
{ "head", "b" },
|
|
{ "head", "bdo" },
|
|
{ "head", "big" },
|
|
{ "head", "blockquote" },
|
|
{ "head", "body" },
|
|
{ "head", "br" },
|
|
{ "head", "center" },
|
|
{ "head", "cite" },
|
|
{ "head", "code" },
|
|
{ "head", "dd" },
|
|
{ "head", "dfn" },
|
|
{ "head", "dir" },
|
|
{ "head", "div" },
|
|
{ "head", "dl" },
|
|
{ "head", "dt" },
|
|
{ "head", "em" },
|
|
{ "head", "fieldset" },
|
|
{ "head", "font" },
|
|
{ "head", "form" },
|
|
{ "head", "frameset" },
|
|
{ "head", "h1" },
|
|
{ "head", "h2" },
|
|
{ "head", "h3" },
|
|
{ "head", "h4" },
|
|
{ "head", "h5" },
|
|
{ "head", "h6" },
|
|
{ "head", "hr" },
|
|
{ "head", "i" },
|
|
{ "head", "iframe" },
|
|
{ "head", "img" },
|
|
{ "head", "kbd" },
|
|
{ "head", "li" },
|
|
{ "head", "listing" },
|
|
{ "head", "map" },
|
|
{ "head", "menu" },
|
|
{ "head", "ol" },
|
|
{ "head", "p" },
|
|
{ "head", "pre" },
|
|
{ "head", "q" },
|
|
{ "head", "s" },
|
|
{ "head", "samp" },
|
|
{ "head", "small" },
|
|
{ "head", "span" },
|
|
{ "head", "strike" },
|
|
{ "head", "strong" },
|
|
{ "head", "sub" },
|
|
{ "head", "sup" },
|
|
{ "head", "table" },
|
|
{ "head", "tt" },
|
|
{ "head", "u" },
|
|
{ "head", "ul" },
|
|
{ "head", "var" },
|
|
{ "head", "xmp" },
|
|
{ "hr", "form" },
|
|
{ "i", "center" },
|
|
{ "i", "p" },
|
|
{ "i", "td" },
|
|
{ "i", "th" },
|
|
{ "legend", "fieldset" },
|
|
{ "li", "li" },
|
|
{ "link", "body" },
|
|
{ "link", "frameset" },
|
|
{ "listing", "dd" },
|
|
{ "listing", "dl" },
|
|
{ "listing", "dt" },
|
|
{ "listing", "fieldset" },
|
|
{ "listing", "form" },
|
|
{ "listing", "li" },
|
|
{ "listing", "table" },
|
|
{ "listing", "ul" },
|
|
{ "menu", "dd" },
|
|
{ "menu", "dl" },
|
|
{ "menu", "dt" },
|
|
{ "menu", "form" },
|
|
{ "menu", "ul" },
|
|
{ "ol", "form" },
|
|
{ "ol", "ul" },
|
|
{ "option", "optgroup" },
|
|
{ "option", "option" },
|
|
{ "p", "address" },
|
|
{ "p", "blockquote" },
|
|
{ "p", "body" },
|
|
{ "p", "caption" },
|
|
{ "p", "center" },
|
|
{ "p", "col" },
|
|
{ "p", "colgroup" },
|
|
{ "p", "dd" },
|
|
{ "p", "dir" },
|
|
{ "p", "div" },
|
|
{ "p", "dl" },
|
|
{ "p", "dt" },
|
|
{ "p", "fieldset" },
|
|
{ "p", "form" },
|
|
{ "p", "frameset" },
|
|
{ "p", "h1" },
|
|
{ "p", "h2" },
|
|
{ "p", "h3" },
|
|
{ "p", "h4" },
|
|
{ "p", "h5" },
|
|
{ "p", "h6" },
|
|
{ "p", "head" },
|
|
{ "p", "hr" },
|
|
{ "p", "li" },
|
|
{ "p", "listing" },
|
|
{ "p", "menu" },
|
|
{ "p", "ol" },
|
|
{ "p", "p" },
|
|
{ "p", "pre" },
|
|
{ "p", "table" },
|
|
{ "p", "tbody" },
|
|
{ "p", "td" },
|
|
{ "p", "tfoot" },
|
|
{ "p", "th" },
|
|
{ "p", "title" },
|
|
{ "p", "tr" },
|
|
{ "p", "ul" },
|
|
{ "p", "xmp" },
|
|
{ "pre", "dd" },
|
|
{ "pre", "dl" },
|
|
{ "pre", "dt" },
|
|
{ "pre", "fieldset" },
|
|
{ "pre", "form" },
|
|
{ "pre", "li" },
|
|
{ "pre", "table" },
|
|
{ "pre", "ul" },
|
|
{ "s", "p" },
|
|
{ "script", "noscript" },
|
|
{ "small", "p" },
|
|
{ "span", "td" },
|
|
{ "span", "th" },
|
|
{ "strike", "p" },
|
|
{ "style", "body" },
|
|
{ "style", "frameset" },
|
|
{ "tbody", "tbody" },
|
|
{ "tbody", "tfoot" },
|
|
{ "td", "tbody" },
|
|
{ "td", "td" },
|
|
{ "td", "tfoot" },
|
|
{ "td", "th" },
|
|
{ "td", "tr" },
|
|
{ "tfoot", "tbody" },
|
|
{ "th", "tbody" },
|
|
{ "th", "td" },
|
|
{ "th", "tfoot" },
|
|
{ "th", "th" },
|
|
{ "th", "tr" },
|
|
{ "thead", "tbody" },
|
|
{ "thead", "tfoot" },
|
|
{ "title", "body" },
|
|
{ "title", "frameset" },
|
|
{ "tr", "tbody" },
|
|
{ "tr", "tfoot" },
|
|
{ "tr", "tr" },
|
|
{ "tt", "p" },
|
|
{ "u", "p" },
|
|
{ "u", "td" },
|
|
{ "u", "th" },
|
|
{ "ul", "address" },
|
|
{ "ul", "form" },
|
|
{ "ul", "menu" },
|
|
{ "ul", "ol" },
|
|
{ "ul", "pre" },
|
|
{ "xmp", "dd" },
|
|
{ "xmp", "dl" },
|
|
{ "xmp", "dt" },
|
|
{ "xmp", "fieldset" },
|
|
{ "xmp", "form" },
|
|
{ "xmp", "li" },
|
|
{ "xmp", "table" },
|
|
{ "xmp", "ul" }
|
|
};
|
|
|
|
/*
|
|
* The list of HTML elements which are supposed not to have
|
|
* CDATA content and where a p element will be implied
|
|
*
|
|
* TODO: extend that list by reading the HTML SGML DTD on
|
|
* implied paragraph
|
|
*/
|
|
static const char *const htmlNoContentElements[] = {
|
|
"html",
|
|
"head",
|
|
NULL
|
|
};
|
|
|
|
/*
|
|
* The list of HTML attributes which are of content %Script;
|
|
* NOTE: when adding ones, check htmlIsScriptAttribute() since
|
|
* it assumes the name starts with 'on'
|
|
*/
|
|
static const char *const htmlScriptAttributes[] = {
|
|
"onclick",
|
|
"ondblclick",
|
|
"onmousedown",
|
|
"onmouseup",
|
|
"onmouseover",
|
|
"onmousemove",
|
|
"onmouseout",
|
|
"onkeypress",
|
|
"onkeydown",
|
|
"onkeyup",
|
|
"onload",
|
|
"onunload",
|
|
"onfocus",
|
|
"onblur",
|
|
"onsubmit",
|
|
"onreset",
|
|
"onchange",
|
|
"onselect"
|
|
};
|
|
|
|
/*
|
|
* This table is used by the htmlparser to know what to do with
|
|
* broken html pages. By assigning different priorities to different
|
|
* elements the parser can decide how to handle extra endtags.
|
|
* Endtags are only allowed to close elements with lower or equal
|
|
* priority.
|
|
*/
|
|
|
|
typedef struct {
|
|
const char *name;
|
|
int priority;
|
|
} elementPriority;
|
|
|
|
static const elementPriority htmlEndPriority[] = {
|
|
{"div", 150},
|
|
{"td", 160},
|
|
{"th", 160},
|
|
{"tr", 170},
|
|
{"thead", 180},
|
|
{"tbody", 180},
|
|
{"tfoot", 180},
|
|
{"table", 190},
|
|
{"head", 200},
|
|
{"body", 200},
|
|
{"html", 220},
|
|
{NULL, 100} /* Default priority */
|
|
};
|
|
|
|
/************************************************************************
|
|
* *
|
|
* functions to handle HTML specific data *
|
|
* *
|
|
************************************************************************/
|
|
|
|
/**
|
|
* htmlInitAutoClose:
|
|
*
|
|
* This is a no-op now.
|
|
*/
|
|
void
|
|
htmlInitAutoClose(void) {
|
|
}
|
|
|
|
static int
|
|
htmlCompareTags(const void *key, const void *member) {
|
|
const xmlChar *tag = (const xmlChar *) key;
|
|
const htmlElemDesc *desc = (const htmlElemDesc *) member;
|
|
|
|
return(xmlStrcasecmp(tag, BAD_CAST desc->name));
|
|
}
|
|
|
|
/**
|
|
* htmlTagLookup:
|
|
* @tag: The tag name in lowercase
|
|
*
|
|
* Lookup the HTML tag in the ElementTable
|
|
*
|
|
* Returns the related htmlElemDescPtr or NULL if not found.
|
|
*/
|
|
const htmlElemDesc *
|
|
htmlTagLookup(const xmlChar *tag) {
|
|
if (tag == NULL)
|
|
return(NULL);
|
|
|
|
return((const htmlElemDesc *) bsearch(tag, html40ElementTable,
|
|
sizeof(html40ElementTable) / sizeof(htmlElemDesc),
|
|
sizeof(htmlElemDesc), htmlCompareTags));
|
|
}
|
|
|
|
/**
|
|
* htmlGetEndPriority:
|
|
* @name: The name of the element to look up the priority for.
|
|
*
|
|
* Return value: The "endtag" priority.
|
|
**/
|
|
static int
|
|
htmlGetEndPriority (const xmlChar *name) {
|
|
int i = 0;
|
|
|
|
while ((htmlEndPriority[i].name != NULL) &&
|
|
(!xmlStrEqual((const xmlChar *)htmlEndPriority[i].name, name)))
|
|
i++;
|
|
|
|
return(htmlEndPriority[i].priority);
|
|
}
|
|
|
|
|
|
static int
|
|
htmlCompareStartClose(const void *vkey, const void *member) {
|
|
const htmlStartCloseEntry *key = (const htmlStartCloseEntry *) vkey;
|
|
const htmlStartCloseEntry *entry = (const htmlStartCloseEntry *) member;
|
|
int ret;
|
|
|
|
ret = strcmp(key->oldTag, entry->oldTag);
|
|
if (ret == 0)
|
|
ret = strcmp(key->newTag, entry->newTag);
|
|
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* htmlCheckAutoClose:
|
|
* @newtag: The new tag name
|
|
* @oldtag: The old tag name
|
|
*
|
|
* Checks whether the new tag is one of the registered valid tags for
|
|
* closing old.
|
|
*
|
|
* Returns 0 if no, 1 if yes.
|
|
*/
|
|
static int
|
|
htmlCheckAutoClose(const xmlChar * newtag, const xmlChar * oldtag)
|
|
{
|
|
htmlStartCloseEntry key;
|
|
void *res;
|
|
|
|
key.oldTag = (const char *) oldtag;
|
|
key.newTag = (const char *) newtag;
|
|
res = bsearch(&key, htmlStartClose,
|
|
sizeof(htmlStartClose) / sizeof(htmlStartCloseEntry),
|
|
sizeof(htmlStartCloseEntry), htmlCompareStartClose);
|
|
return(res != NULL);
|
|
}
|
|
|
|
/**
|
|
* htmlAutoCloseOnClose:
|
|
* @ctxt: an HTML parser context
|
|
* @newtag: The new tag name
|
|
* @force: force the tag closure
|
|
*
|
|
* The HTML DTD allows an ending tag to implicitly close other tags.
|
|
*/
|
|
static void
|
|
htmlAutoCloseOnClose(htmlParserCtxtPtr ctxt, const xmlChar * newtag)
|
|
{
|
|
const htmlElemDesc *info;
|
|
int i, priority;
|
|
|
|
priority = htmlGetEndPriority(newtag);
|
|
|
|
for (i = (ctxt->nameNr - 1); i >= 0; i--) {
|
|
|
|
if (xmlStrEqual(newtag, ctxt->nameTab[i]))
|
|
break;
|
|
/*
|
|
* A misplaced endtag can only close elements with lower
|
|
* or equal priority, so if we find an element with higher
|
|
* priority before we find an element with
|
|
* matching name, we just ignore this endtag
|
|
*/
|
|
if (htmlGetEndPriority(ctxt->nameTab[i]) > priority)
|
|
return;
|
|
}
|
|
if (i < 0)
|
|
return;
|
|
|
|
while (!xmlStrEqual(newtag, ctxt->name)) {
|
|
info = htmlTagLookup(ctxt->name);
|
|
if ((info != NULL) && (info->endTag == 3)) {
|
|
htmlParseErr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
|
|
"Opening and ending tag mismatch: %s and %s\n",
|
|
newtag, ctxt->name);
|
|
}
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
|
|
ctxt->sax->endElement(ctxt->userData, ctxt->name);
|
|
htmlnamePop(ctxt);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* htmlAutoCloseOnEnd:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* Close all remaining tags at the end of the stream
|
|
*/
|
|
static void
|
|
htmlAutoCloseOnEnd(htmlParserCtxtPtr ctxt)
|
|
{
|
|
int i;
|
|
|
|
if (ctxt->nameNr == 0)
|
|
return;
|
|
for (i = (ctxt->nameNr - 1); i >= 0; i--) {
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
|
|
ctxt->sax->endElement(ctxt->userData, ctxt->name);
|
|
htmlnamePop(ctxt);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* htmlAutoClose:
|
|
* @ctxt: an HTML parser context
|
|
* @newtag: The new tag name or NULL
|
|
*
|
|
* The HTML DTD allows a tag to implicitly close other tags.
|
|
* The list is kept in htmlStartClose array. This function is
|
|
* called when a new tag has been detected and generates the
|
|
* appropriates closes if possible/needed.
|
|
* If newtag is NULL this mean we are at the end of the resource
|
|
* and we should check
|
|
*/
|
|
static void
|
|
htmlAutoClose(htmlParserCtxtPtr ctxt, const xmlChar * newtag)
|
|
{
|
|
while ((newtag != NULL) && (ctxt->name != NULL) &&
|
|
(htmlCheckAutoClose(newtag, ctxt->name))) {
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
|
|
ctxt->sax->endElement(ctxt->userData, ctxt->name);
|
|
htmlnamePop(ctxt);
|
|
}
|
|
if (newtag == NULL) {
|
|
htmlAutoCloseOnEnd(ctxt);
|
|
return;
|
|
}
|
|
while ((newtag == NULL) && (ctxt->name != NULL) &&
|
|
((xmlStrEqual(ctxt->name, BAD_CAST "head")) ||
|
|
(xmlStrEqual(ctxt->name, BAD_CAST "body")) ||
|
|
(xmlStrEqual(ctxt->name, BAD_CAST "html")))) {
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
|
|
ctxt->sax->endElement(ctxt->userData, ctxt->name);
|
|
htmlnamePop(ctxt);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* htmlAutoCloseTag:
|
|
* @doc: the HTML document
|
|
* @name: The tag name
|
|
* @elem: the HTML element
|
|
*
|
|
* The HTML DTD allows a tag to implicitly close other tags.
|
|
* The list is kept in htmlStartClose array. This function checks
|
|
* if the element or one of it's children would autoclose the
|
|
* given tag.
|
|
*
|
|
* Returns 1 if autoclose, 0 otherwise
|
|
*/
|
|
int
|
|
htmlAutoCloseTag(htmlDocPtr doc, const xmlChar *name, htmlNodePtr elem) {
|
|
htmlNodePtr child;
|
|
|
|
if (elem == NULL) return(1);
|
|
if (xmlStrEqual(name, elem->name)) return(0);
|
|
if (htmlCheckAutoClose(elem->name, name)) return(1);
|
|
child = elem->children;
|
|
while (child != NULL) {
|
|
if (htmlAutoCloseTag(doc, name, child)) return(1);
|
|
child = child->next;
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* htmlIsAutoClosed:
|
|
* @doc: the HTML document
|
|
* @elem: the HTML element
|
|
*
|
|
* The HTML DTD allows a tag to implicitly close other tags.
|
|
* The list is kept in htmlStartClose array. This function checks
|
|
* if a tag is autoclosed by one of it's child
|
|
*
|
|
* Returns 1 if autoclosed, 0 otherwise
|
|
*/
|
|
int
|
|
htmlIsAutoClosed(htmlDocPtr doc, htmlNodePtr elem) {
|
|
htmlNodePtr child;
|
|
|
|
if (elem == NULL) return(1);
|
|
child = elem->children;
|
|
while (child != NULL) {
|
|
if (htmlAutoCloseTag(doc, elem->name, child)) return(1);
|
|
child = child->next;
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* htmlCheckImplied:
|
|
* @ctxt: an HTML parser context
|
|
* @newtag: The new tag name
|
|
*
|
|
* The HTML DTD allows a tag to exists only implicitly
|
|
* called when a new tag has been detected and generates the
|
|
* appropriates implicit tags if missing
|
|
*/
|
|
static void
|
|
htmlCheckImplied(htmlParserCtxtPtr ctxt, const xmlChar *newtag) {
|
|
int i;
|
|
|
|
if (ctxt->options & HTML_PARSE_NOIMPLIED)
|
|
return;
|
|
if (!htmlOmittedDefaultValue)
|
|
return;
|
|
if (xmlStrEqual(newtag, BAD_CAST"html"))
|
|
return;
|
|
if (ctxt->nameNr <= 0) {
|
|
htmlnamePush(ctxt, BAD_CAST"html");
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
|
|
ctxt->sax->startElement(ctxt->userData, BAD_CAST"html", NULL);
|
|
}
|
|
if ((xmlStrEqual(newtag, BAD_CAST"body")) || (xmlStrEqual(newtag, BAD_CAST"head")))
|
|
return;
|
|
if ((ctxt->nameNr <= 1) &&
|
|
((xmlStrEqual(newtag, BAD_CAST"script")) ||
|
|
(xmlStrEqual(newtag, BAD_CAST"style")) ||
|
|
(xmlStrEqual(newtag, BAD_CAST"meta")) ||
|
|
(xmlStrEqual(newtag, BAD_CAST"link")) ||
|
|
(xmlStrEqual(newtag, BAD_CAST"title")) ||
|
|
(xmlStrEqual(newtag, BAD_CAST"base")))) {
|
|
if (ctxt->html >= 3) {
|
|
/* we already saw or generated an <head> before */
|
|
return;
|
|
}
|
|
/*
|
|
* dropped OBJECT ... i you put it first BODY will be
|
|
* assumed !
|
|
*/
|
|
htmlnamePush(ctxt, BAD_CAST"head");
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
|
|
ctxt->sax->startElement(ctxt->userData, BAD_CAST"head", NULL);
|
|
} else if ((!xmlStrEqual(newtag, BAD_CAST"noframes")) &&
|
|
(!xmlStrEqual(newtag, BAD_CAST"frame")) &&
|
|
(!xmlStrEqual(newtag, BAD_CAST"frameset"))) {
|
|
if (ctxt->html >= 10) {
|
|
/* we already saw or generated a <body> before */
|
|
return;
|
|
}
|
|
for (i = 0;i < ctxt->nameNr;i++) {
|
|
if (xmlStrEqual(ctxt->nameTab[i], BAD_CAST"body")) {
|
|
return;
|
|
}
|
|
if (xmlStrEqual(ctxt->nameTab[i], BAD_CAST"head")) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
htmlnamePush(ctxt, BAD_CAST"body");
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
|
|
ctxt->sax->startElement(ctxt->userData, BAD_CAST"body", NULL);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* htmlCheckParagraph
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* Check whether a p element need to be implied before inserting
|
|
* characters in the current element.
|
|
*
|
|
* Returns 1 if a paragraph has been inserted, 0 if not and -1
|
|
* in case of error.
|
|
*/
|
|
|
|
static int
|
|
htmlCheckParagraph(htmlParserCtxtPtr ctxt) {
|
|
const xmlChar *tag;
|
|
int i;
|
|
|
|
if (ctxt == NULL)
|
|
return(-1);
|
|
tag = ctxt->name;
|
|
if (tag == NULL) {
|
|
htmlAutoClose(ctxt, BAD_CAST"p");
|
|
htmlCheckImplied(ctxt, BAD_CAST"p");
|
|
htmlnamePush(ctxt, BAD_CAST"p");
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
|
|
ctxt->sax->startElement(ctxt->userData, BAD_CAST"p", NULL);
|
|
return(1);
|
|
}
|
|
if (!htmlOmittedDefaultValue)
|
|
return(0);
|
|
for (i = 0; htmlNoContentElements[i] != NULL; i++) {
|
|
if (xmlStrEqual(tag, BAD_CAST htmlNoContentElements[i])) {
|
|
htmlAutoClose(ctxt, BAD_CAST"p");
|
|
htmlCheckImplied(ctxt, BAD_CAST"p");
|
|
htmlnamePush(ctxt, BAD_CAST"p");
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL))
|
|
ctxt->sax->startElement(ctxt->userData, BAD_CAST"p", NULL);
|
|
return(1);
|
|
}
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* htmlIsScriptAttribute:
|
|
* @name: an attribute name
|
|
*
|
|
* Check if an attribute is of content type Script
|
|
*
|
|
* Returns 1 is the attribute is a script 0 otherwise
|
|
*/
|
|
int
|
|
htmlIsScriptAttribute(const xmlChar *name) {
|
|
unsigned int i;
|
|
|
|
if (name == NULL)
|
|
return(0);
|
|
/*
|
|
* all script attributes start with 'on'
|
|
*/
|
|
if ((name[0] != 'o') || (name[1] != 'n'))
|
|
return(0);
|
|
for (i = 0;
|
|
i < sizeof(htmlScriptAttributes)/sizeof(htmlScriptAttributes[0]);
|
|
i++) {
|
|
if (xmlStrEqual(name, (const xmlChar *) htmlScriptAttributes[i]))
|
|
return(1);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/************************************************************************
|
|
* *
|
|
* The list of HTML predefined entities *
|
|
* *
|
|
************************************************************************/
|
|
|
|
|
|
static const htmlEntityDesc html40EntitiesTable[] = {
|
|
/*
|
|
* the 4 absolute ones, plus apostrophe.
|
|
*/
|
|
{ 34, "quot", "quotation mark = APL quote, U+0022 ISOnum" },
|
|
{ 38, "amp", "ampersand, U+0026 ISOnum" },
|
|
{ 39, "apos", "single quote" },
|
|
{ 60, "lt", "less-than sign, U+003C ISOnum" },
|
|
{ 62, "gt", "greater-than sign, U+003E ISOnum" },
|
|
|
|
/*
|
|
* A bunch still in the 128-255 range
|
|
* Replacing them depend really on the charset used.
|
|
*/
|
|
{ 160, "nbsp", "no-break space = non-breaking space, U+00A0 ISOnum" },
|
|
{ 161, "iexcl","inverted exclamation mark, U+00A1 ISOnum" },
|
|
{ 162, "cent", "cent sign, U+00A2 ISOnum" },
|
|
{ 163, "pound","pound sign, U+00A3 ISOnum" },
|
|
{ 164, "curren","currency sign, U+00A4 ISOnum" },
|
|
{ 165, "yen", "yen sign = yuan sign, U+00A5 ISOnum" },
|
|
{ 166, "brvbar","broken bar = broken vertical bar, U+00A6 ISOnum" },
|
|
{ 167, "sect", "section sign, U+00A7 ISOnum" },
|
|
{ 168, "uml", "diaeresis = spacing diaeresis, U+00A8 ISOdia" },
|
|
{ 169, "copy", "copyright sign, U+00A9 ISOnum" },
|
|
{ 170, "ordf", "feminine ordinal indicator, U+00AA ISOnum" },
|
|
{ 171, "laquo","left-pointing double angle quotation mark = left pointing guillemet, U+00AB ISOnum" },
|
|
{ 172, "not", "not sign, U+00AC ISOnum" },
|
|
{ 173, "shy", "soft hyphen = discretionary hyphen, U+00AD ISOnum" },
|
|
{ 174, "reg", "registered sign = registered trade mark sign, U+00AE ISOnum" },
|
|
{ 175, "macr", "macron = spacing macron = overline = APL overbar, U+00AF ISOdia" },
|
|
{ 176, "deg", "degree sign, U+00B0 ISOnum" },
|
|
{ 177, "plusmn","plus-minus sign = plus-or-minus sign, U+00B1 ISOnum" },
|
|
{ 178, "sup2", "superscript two = superscript digit two = squared, U+00B2 ISOnum" },
|
|
{ 179, "sup3", "superscript three = superscript digit three = cubed, U+00B3 ISOnum" },
|
|
{ 180, "acute","acute accent = spacing acute, U+00B4 ISOdia" },
|
|
{ 181, "micro","micro sign, U+00B5 ISOnum" },
|
|
{ 182, "para", "pilcrow sign = paragraph sign, U+00B6 ISOnum" },
|
|
{ 183, "middot","middle dot = Georgian comma Greek middle dot, U+00B7 ISOnum" },
|
|
{ 184, "cedil","cedilla = spacing cedilla, U+00B8 ISOdia" },
|
|
{ 185, "sup1", "superscript one = superscript digit one, U+00B9 ISOnum" },
|
|
{ 186, "ordm", "masculine ordinal indicator, U+00BA ISOnum" },
|
|
{ 187, "raquo","right-pointing double angle quotation mark right pointing guillemet, U+00BB ISOnum" },
|
|
{ 188, "frac14","vulgar fraction one quarter = fraction one quarter, U+00BC ISOnum" },
|
|
{ 189, "frac12","vulgar fraction one half = fraction one half, U+00BD ISOnum" },
|
|
{ 190, "frac34","vulgar fraction three quarters = fraction three quarters, U+00BE ISOnum" },
|
|
{ 191, "iquest","inverted question mark = turned question mark, U+00BF ISOnum" },
|
|
{ 192, "Agrave","latin capital letter A with grave = latin capital letter A grave, U+00C0 ISOlat1" },
|
|
{ 193, "Aacute","latin capital letter A with acute, U+00C1 ISOlat1" },
|
|
{ 194, "Acirc","latin capital letter A with circumflex, U+00C2 ISOlat1" },
|
|
{ 195, "Atilde","latin capital letter A with tilde, U+00C3 ISOlat1" },
|
|
{ 196, "Auml", "latin capital letter A with diaeresis, U+00C4 ISOlat1" },
|
|
{ 197, "Aring","latin capital letter A with ring above = latin capital letter A ring, U+00C5 ISOlat1" },
|
|
{ 198, "AElig","latin capital letter AE = latin capital ligature AE, U+00C6 ISOlat1" },
|
|
{ 199, "Ccedil","latin capital letter C with cedilla, U+00C7 ISOlat1" },
|
|
{ 200, "Egrave","latin capital letter E with grave, U+00C8 ISOlat1" },
|
|
{ 201, "Eacute","latin capital letter E with acute, U+00C9 ISOlat1" },
|
|
{ 202, "Ecirc","latin capital letter E with circumflex, U+00CA ISOlat1" },
|
|
{ 203, "Euml", "latin capital letter E with diaeresis, U+00CB ISOlat1" },
|
|
{ 204, "Igrave","latin capital letter I with grave, U+00CC ISOlat1" },
|
|
{ 205, "Iacute","latin capital letter I with acute, U+00CD ISOlat1" },
|
|
{ 206, "Icirc","latin capital letter I with circumflex, U+00CE ISOlat1" },
|
|
{ 207, "Iuml", "latin capital letter I with diaeresis, U+00CF ISOlat1" },
|
|
{ 208, "ETH", "latin capital letter ETH, U+00D0 ISOlat1" },
|
|
{ 209, "Ntilde","latin capital letter N with tilde, U+00D1 ISOlat1" },
|
|
{ 210, "Ograve","latin capital letter O with grave, U+00D2 ISOlat1" },
|
|
{ 211, "Oacute","latin capital letter O with acute, U+00D3 ISOlat1" },
|
|
{ 212, "Ocirc","latin capital letter O with circumflex, U+00D4 ISOlat1" },
|
|
{ 213, "Otilde","latin capital letter O with tilde, U+00D5 ISOlat1" },
|
|
{ 214, "Ouml", "latin capital letter O with diaeresis, U+00D6 ISOlat1" },
|
|
{ 215, "times","multiplication sign, U+00D7 ISOnum" },
|
|
{ 216, "Oslash","latin capital letter O with stroke latin capital letter O slash, U+00D8 ISOlat1" },
|
|
{ 217, "Ugrave","latin capital letter U with grave, U+00D9 ISOlat1" },
|
|
{ 218, "Uacute","latin capital letter U with acute, U+00DA ISOlat1" },
|
|
{ 219, "Ucirc","latin capital letter U with circumflex, U+00DB ISOlat1" },
|
|
{ 220, "Uuml", "latin capital letter U with diaeresis, U+00DC ISOlat1" },
|
|
{ 221, "Yacute","latin capital letter Y with acute, U+00DD ISOlat1" },
|
|
{ 222, "THORN","latin capital letter THORN, U+00DE ISOlat1" },
|
|
{ 223, "szlig","latin small letter sharp s = ess-zed, U+00DF ISOlat1" },
|
|
{ 224, "agrave","latin small letter a with grave = latin small letter a grave, U+00E0 ISOlat1" },
|
|
{ 225, "aacute","latin small letter a with acute, U+00E1 ISOlat1" },
|
|
{ 226, "acirc","latin small letter a with circumflex, U+00E2 ISOlat1" },
|
|
{ 227, "atilde","latin small letter a with tilde, U+00E3 ISOlat1" },
|
|
{ 228, "auml", "latin small letter a with diaeresis, U+00E4 ISOlat1" },
|
|
{ 229, "aring","latin small letter a with ring above = latin small letter a ring, U+00E5 ISOlat1" },
|
|
{ 230, "aelig","latin small letter ae = latin small ligature ae, U+00E6 ISOlat1" },
|
|
{ 231, "ccedil","latin small letter c with cedilla, U+00E7 ISOlat1" },
|
|
{ 232, "egrave","latin small letter e with grave, U+00E8 ISOlat1" },
|
|
{ 233, "eacute","latin small letter e with acute, U+00E9 ISOlat1" },
|
|
{ 234, "ecirc","latin small letter e with circumflex, U+00EA ISOlat1" },
|
|
{ 235, "euml", "latin small letter e with diaeresis, U+00EB ISOlat1" },
|
|
{ 236, "igrave","latin small letter i with grave, U+00EC ISOlat1" },
|
|
{ 237, "iacute","latin small letter i with acute, U+00ED ISOlat1" },
|
|
{ 238, "icirc","latin small letter i with circumflex, U+00EE ISOlat1" },
|
|
{ 239, "iuml", "latin small letter i with diaeresis, U+00EF ISOlat1" },
|
|
{ 240, "eth", "latin small letter eth, U+00F0 ISOlat1" },
|
|
{ 241, "ntilde","latin small letter n with tilde, U+00F1 ISOlat1" },
|
|
{ 242, "ograve","latin small letter o with grave, U+00F2 ISOlat1" },
|
|
{ 243, "oacute","latin small letter o with acute, U+00F3 ISOlat1" },
|
|
{ 244, "ocirc","latin small letter o with circumflex, U+00F4 ISOlat1" },
|
|
{ 245, "otilde","latin small letter o with tilde, U+00F5 ISOlat1" },
|
|
{ 246, "ouml", "latin small letter o with diaeresis, U+00F6 ISOlat1" },
|
|
{ 247, "divide","division sign, U+00F7 ISOnum" },
|
|
{ 248, "oslash","latin small letter o with stroke, = latin small letter o slash, U+00F8 ISOlat1" },
|
|
{ 249, "ugrave","latin small letter u with grave, U+00F9 ISOlat1" },
|
|
{ 250, "uacute","latin small letter u with acute, U+00FA ISOlat1" },
|
|
{ 251, "ucirc","latin small letter u with circumflex, U+00FB ISOlat1" },
|
|
{ 252, "uuml", "latin small letter u with diaeresis, U+00FC ISOlat1" },
|
|
{ 253, "yacute","latin small letter y with acute, U+00FD ISOlat1" },
|
|
{ 254, "thorn","latin small letter thorn with, U+00FE ISOlat1" },
|
|
{ 255, "yuml", "latin small letter y with diaeresis, U+00FF ISOlat1" },
|
|
|
|
{ 338, "OElig","latin capital ligature OE, U+0152 ISOlat2" },
|
|
{ 339, "oelig","latin small ligature oe, U+0153 ISOlat2" },
|
|
{ 352, "Scaron","latin capital letter S with caron, U+0160 ISOlat2" },
|
|
{ 353, "scaron","latin small letter s with caron, U+0161 ISOlat2" },
|
|
{ 376, "Yuml", "latin capital letter Y with diaeresis, U+0178 ISOlat2" },
|
|
|
|
/*
|
|
* Anything below should really be kept as entities references
|
|
*/
|
|
{ 402, "fnof", "latin small f with hook = function = florin, U+0192 ISOtech" },
|
|
|
|
{ 710, "circ", "modifier letter circumflex accent, U+02C6 ISOpub" },
|
|
{ 732, "tilde","small tilde, U+02DC ISOdia" },
|
|
|
|
{ 913, "Alpha","greek capital letter alpha, U+0391" },
|
|
{ 914, "Beta", "greek capital letter beta, U+0392" },
|
|
{ 915, "Gamma","greek capital letter gamma, U+0393 ISOgrk3" },
|
|
{ 916, "Delta","greek capital letter delta, U+0394 ISOgrk3" },
|
|
{ 917, "Epsilon","greek capital letter epsilon, U+0395" },
|
|
{ 918, "Zeta", "greek capital letter zeta, U+0396" },
|
|
{ 919, "Eta", "greek capital letter eta, U+0397" },
|
|
{ 920, "Theta","greek capital letter theta, U+0398 ISOgrk3" },
|
|
{ 921, "Iota", "greek capital letter iota, U+0399" },
|
|
{ 922, "Kappa","greek capital letter kappa, U+039A" },
|
|
{ 923, "Lambda", "greek capital letter lambda, U+039B ISOgrk3" },
|
|
{ 924, "Mu", "greek capital letter mu, U+039C" },
|
|
{ 925, "Nu", "greek capital letter nu, U+039D" },
|
|
{ 926, "Xi", "greek capital letter xi, U+039E ISOgrk3" },
|
|
{ 927, "Omicron","greek capital letter omicron, U+039F" },
|
|
{ 928, "Pi", "greek capital letter pi, U+03A0 ISOgrk3" },
|
|
{ 929, "Rho", "greek capital letter rho, U+03A1" },
|
|
{ 931, "Sigma","greek capital letter sigma, U+03A3 ISOgrk3" },
|
|
{ 932, "Tau", "greek capital letter tau, U+03A4" },
|
|
{ 933, "Upsilon","greek capital letter upsilon, U+03A5 ISOgrk3" },
|
|
{ 934, "Phi", "greek capital letter phi, U+03A6 ISOgrk3" },
|
|
{ 935, "Chi", "greek capital letter chi, U+03A7" },
|
|
{ 936, "Psi", "greek capital letter psi, U+03A8 ISOgrk3" },
|
|
{ 937, "Omega","greek capital letter omega, U+03A9 ISOgrk3" },
|
|
|
|
{ 945, "alpha","greek small letter alpha, U+03B1 ISOgrk3" },
|
|
{ 946, "beta", "greek small letter beta, U+03B2 ISOgrk3" },
|
|
{ 947, "gamma","greek small letter gamma, U+03B3 ISOgrk3" },
|
|
{ 948, "delta","greek small letter delta, U+03B4 ISOgrk3" },
|
|
{ 949, "epsilon","greek small letter epsilon, U+03B5 ISOgrk3" },
|
|
{ 950, "zeta", "greek small letter zeta, U+03B6 ISOgrk3" },
|
|
{ 951, "eta", "greek small letter eta, U+03B7 ISOgrk3" },
|
|
{ 952, "theta","greek small letter theta, U+03B8 ISOgrk3" },
|
|
{ 953, "iota", "greek small letter iota, U+03B9 ISOgrk3" },
|
|
{ 954, "kappa","greek small letter kappa, U+03BA ISOgrk3" },
|
|
{ 955, "lambda","greek small letter lambda, U+03BB ISOgrk3" },
|
|
{ 956, "mu", "greek small letter mu, U+03BC ISOgrk3" },
|
|
{ 957, "nu", "greek small letter nu, U+03BD ISOgrk3" },
|
|
{ 958, "xi", "greek small letter xi, U+03BE ISOgrk3" },
|
|
{ 959, "omicron","greek small letter omicron, U+03BF NEW" },
|
|
{ 960, "pi", "greek small letter pi, U+03C0 ISOgrk3" },
|
|
{ 961, "rho", "greek small letter rho, U+03C1 ISOgrk3" },
|
|
{ 962, "sigmaf","greek small letter final sigma, U+03C2 ISOgrk3" },
|
|
{ 963, "sigma","greek small letter sigma, U+03C3 ISOgrk3" },
|
|
{ 964, "tau", "greek small letter tau, U+03C4 ISOgrk3" },
|
|
{ 965, "upsilon","greek small letter upsilon, U+03C5 ISOgrk3" },
|
|
{ 966, "phi", "greek small letter phi, U+03C6 ISOgrk3" },
|
|
{ 967, "chi", "greek small letter chi, U+03C7 ISOgrk3" },
|
|
{ 968, "psi", "greek small letter psi, U+03C8 ISOgrk3" },
|
|
{ 969, "omega","greek small letter omega, U+03C9 ISOgrk3" },
|
|
{ 977, "thetasym","greek small letter theta symbol, U+03D1 NEW" },
|
|
{ 978, "upsih","greek upsilon with hook symbol, U+03D2 NEW" },
|
|
{ 982, "piv", "greek pi symbol, U+03D6 ISOgrk3" },
|
|
|
|
{ 8194, "ensp", "en space, U+2002 ISOpub" },
|
|
{ 8195, "emsp", "em space, U+2003 ISOpub" },
|
|
{ 8201, "thinsp","thin space, U+2009 ISOpub" },
|
|
{ 8204, "zwnj", "zero width non-joiner, U+200C NEW RFC 2070" },
|
|
{ 8205, "zwj", "zero width joiner, U+200D NEW RFC 2070" },
|
|
{ 8206, "lrm", "left-to-right mark, U+200E NEW RFC 2070" },
|
|
{ 8207, "rlm", "right-to-left mark, U+200F NEW RFC 2070" },
|
|
{ 8211, "ndash","en dash, U+2013 ISOpub" },
|
|
{ 8212, "mdash","em dash, U+2014 ISOpub" },
|
|
{ 8216, "lsquo","left single quotation mark, U+2018 ISOnum" },
|
|
{ 8217, "rsquo","right single quotation mark, U+2019 ISOnum" },
|
|
{ 8218, "sbquo","single low-9 quotation mark, U+201A NEW" },
|
|
{ 8220, "ldquo","left double quotation mark, U+201C ISOnum" },
|
|
{ 8221, "rdquo","right double quotation mark, U+201D ISOnum" },
|
|
{ 8222, "bdquo","double low-9 quotation mark, U+201E NEW" },
|
|
{ 8224, "dagger","dagger, U+2020 ISOpub" },
|
|
{ 8225, "Dagger","double dagger, U+2021 ISOpub" },
|
|
|
|
{ 8226, "bull", "bullet = black small circle, U+2022 ISOpub" },
|
|
{ 8230, "hellip","horizontal ellipsis = three dot leader, U+2026 ISOpub" },
|
|
|
|
{ 8240, "permil","per mille sign, U+2030 ISOtech" },
|
|
|
|
{ 8242, "prime","prime = minutes = feet, U+2032 ISOtech" },
|
|
{ 8243, "Prime","double prime = seconds = inches, U+2033 ISOtech" },
|
|
|
|
{ 8249, "lsaquo","single left-pointing angle quotation mark, U+2039 ISO proposed" },
|
|
{ 8250, "rsaquo","single right-pointing angle quotation mark, U+203A ISO proposed" },
|
|
|
|
{ 8254, "oline","overline = spacing overscore, U+203E NEW" },
|
|
{ 8260, "frasl","fraction slash, U+2044 NEW" },
|
|
|
|
{ 8364, "euro", "euro sign, U+20AC NEW" },
|
|
|
|
{ 8465, "image","blackletter capital I = imaginary part, U+2111 ISOamso" },
|
|
{ 8472, "weierp","script capital P = power set = Weierstrass p, U+2118 ISOamso" },
|
|
{ 8476, "real", "blackletter capital R = real part symbol, U+211C ISOamso" },
|
|
{ 8482, "trade","trade mark sign, U+2122 ISOnum" },
|
|
{ 8501, "alefsym","alef symbol = first transfinite cardinal, U+2135 NEW" },
|
|
{ 8592, "larr", "leftwards arrow, U+2190 ISOnum" },
|
|
{ 8593, "uarr", "upwards arrow, U+2191 ISOnum" },
|
|
{ 8594, "rarr", "rightwards arrow, U+2192 ISOnum" },
|
|
{ 8595, "darr", "downwards arrow, U+2193 ISOnum" },
|
|
{ 8596, "harr", "left right arrow, U+2194 ISOamsa" },
|
|
{ 8629, "crarr","downwards arrow with corner leftwards = carriage return, U+21B5 NEW" },
|
|
{ 8656, "lArr", "leftwards double arrow, U+21D0 ISOtech" },
|
|
{ 8657, "uArr", "upwards double arrow, U+21D1 ISOamsa" },
|
|
{ 8658, "rArr", "rightwards double arrow, U+21D2 ISOtech" },
|
|
{ 8659, "dArr", "downwards double arrow, U+21D3 ISOamsa" },
|
|
{ 8660, "hArr", "left right double arrow, U+21D4 ISOamsa" },
|
|
|
|
{ 8704, "forall","for all, U+2200 ISOtech" },
|
|
{ 8706, "part", "partial differential, U+2202 ISOtech" },
|
|
{ 8707, "exist","there exists, U+2203 ISOtech" },
|
|
{ 8709, "empty","empty set = null set = diameter, U+2205 ISOamso" },
|
|
{ 8711, "nabla","nabla = backward difference, U+2207 ISOtech" },
|
|
{ 8712, "isin", "element of, U+2208 ISOtech" },
|
|
{ 8713, "notin","not an element of, U+2209 ISOtech" },
|
|
{ 8715, "ni", "contains as member, U+220B ISOtech" },
|
|
{ 8719, "prod", "n-ary product = product sign, U+220F ISOamsb" },
|
|
{ 8721, "sum", "n-ary summation, U+2211 ISOamsb" },
|
|
{ 8722, "minus","minus sign, U+2212 ISOtech" },
|
|
{ 8727, "lowast","asterisk operator, U+2217 ISOtech" },
|
|
{ 8730, "radic","square root = radical sign, U+221A ISOtech" },
|
|
{ 8733, "prop", "proportional to, U+221D ISOtech" },
|
|
{ 8734, "infin","infinity, U+221E ISOtech" },
|
|
{ 8736, "ang", "angle, U+2220 ISOamso" },
|
|
{ 8743, "and", "logical and = wedge, U+2227 ISOtech" },
|
|
{ 8744, "or", "logical or = vee, U+2228 ISOtech" },
|
|
{ 8745, "cap", "intersection = cap, U+2229 ISOtech" },
|
|
{ 8746, "cup", "union = cup, U+222A ISOtech" },
|
|
{ 8747, "int", "integral, U+222B ISOtech" },
|
|
{ 8756, "there4","therefore, U+2234 ISOtech" },
|
|
{ 8764, "sim", "tilde operator = varies with = similar to, U+223C ISOtech" },
|
|
{ 8773, "cong", "approximately equal to, U+2245 ISOtech" },
|
|
{ 8776, "asymp","almost equal to = asymptotic to, U+2248 ISOamsr" },
|
|
{ 8800, "ne", "not equal to, U+2260 ISOtech" },
|
|
{ 8801, "equiv","identical to, U+2261 ISOtech" },
|
|
{ 8804, "le", "less-than or equal to, U+2264 ISOtech" },
|
|
{ 8805, "ge", "greater-than or equal to, U+2265 ISOtech" },
|
|
{ 8834, "sub", "subset of, U+2282 ISOtech" },
|
|
{ 8835, "sup", "superset of, U+2283 ISOtech" },
|
|
{ 8836, "nsub", "not a subset of, U+2284 ISOamsn" },
|
|
{ 8838, "sube", "subset of or equal to, U+2286 ISOtech" },
|
|
{ 8839, "supe", "superset of or equal to, U+2287 ISOtech" },
|
|
{ 8853, "oplus","circled plus = direct sum, U+2295 ISOamsb" },
|
|
{ 8855, "otimes","circled times = vector product, U+2297 ISOamsb" },
|
|
{ 8869, "perp", "up tack = orthogonal to = perpendicular, U+22A5 ISOtech" },
|
|
{ 8901, "sdot", "dot operator, U+22C5 ISOamsb" },
|
|
{ 8968, "lceil","left ceiling = apl upstile, U+2308 ISOamsc" },
|
|
{ 8969, "rceil","right ceiling, U+2309 ISOamsc" },
|
|
{ 8970, "lfloor","left floor = apl downstile, U+230A ISOamsc" },
|
|
{ 8971, "rfloor","right floor, U+230B ISOamsc" },
|
|
{ 9001, "lang", "left-pointing angle bracket = bra, U+2329 ISOtech" },
|
|
{ 9002, "rang", "right-pointing angle bracket = ket, U+232A ISOtech" },
|
|
{ 9674, "loz", "lozenge, U+25CA ISOpub" },
|
|
|
|
{ 9824, "spades","black spade suit, U+2660 ISOpub" },
|
|
{ 9827, "clubs","black club suit = shamrock, U+2663 ISOpub" },
|
|
{ 9829, "hearts","black heart suit = valentine, U+2665 ISOpub" },
|
|
{ 9830, "diams","black diamond suit, U+2666 ISOpub" },
|
|
|
|
};
|
|
|
|
/************************************************************************
|
|
* *
|
|
* Commodity functions to handle entities *
|
|
* *
|
|
************************************************************************/
|
|
|
|
/*
|
|
* Macro used to grow the current buffer.
|
|
*/
|
|
#define growBuffer(buffer) { \
|
|
xmlChar *tmp; \
|
|
buffer##_size *= 2; \
|
|
tmp = (xmlChar *) xmlRealloc(buffer, buffer##_size * sizeof(xmlChar)); \
|
|
if (tmp == NULL) { \
|
|
htmlErrMemory(ctxt, "growing buffer\n"); \
|
|
xmlFree(buffer); \
|
|
return(NULL); \
|
|
} \
|
|
buffer = tmp; \
|
|
}
|
|
|
|
/**
|
|
* htmlEntityLookup:
|
|
* @name: the entity name
|
|
*
|
|
* Lookup the given entity in EntitiesTable
|
|
*
|
|
* TODO: the linear scan is really ugly, an hash table is really needed.
|
|
*
|
|
* Returns the associated htmlEntityDescPtr if found, NULL otherwise.
|
|
*/
|
|
const htmlEntityDesc *
|
|
htmlEntityLookup(const xmlChar *name) {
|
|
unsigned int i;
|
|
|
|
for (i = 0;i < (sizeof(html40EntitiesTable)/
|
|
sizeof(html40EntitiesTable[0]));i++) {
|
|
if (xmlStrEqual(name, BAD_CAST html40EntitiesTable[i].name)) {
|
|
return((htmlEntityDescPtr) &html40EntitiesTable[i]);
|
|
}
|
|
}
|
|
return(NULL);
|
|
}
|
|
|
|
/**
|
|
* htmlEntityValueLookup:
|
|
* @value: the entity's unicode value
|
|
*
|
|
* Lookup the given entity in EntitiesTable
|
|
*
|
|
* TODO: the linear scan is really ugly, an hash table is really needed.
|
|
*
|
|
* Returns the associated htmlEntityDescPtr if found, NULL otherwise.
|
|
*/
|
|
const htmlEntityDesc *
|
|
htmlEntityValueLookup(unsigned int value) {
|
|
unsigned int i;
|
|
|
|
for (i = 0;i < (sizeof(html40EntitiesTable)/
|
|
sizeof(html40EntitiesTable[0]));i++) {
|
|
if (html40EntitiesTable[i].value >= value) {
|
|
if (html40EntitiesTable[i].value > value)
|
|
break;
|
|
return((htmlEntityDescPtr) &html40EntitiesTable[i]);
|
|
}
|
|
}
|
|
return(NULL);
|
|
}
|
|
|
|
/**
|
|
* UTF8ToHtml:
|
|
* @out: a pointer to an array of bytes to store the result
|
|
* @outlen: the length of @out
|
|
* @in: a pointer to an array of UTF-8 chars
|
|
* @inlen: the length of @in
|
|
*
|
|
* Take a block of UTF-8 chars in and try to convert it to an ASCII
|
|
* plus HTML entities block of chars out.
|
|
*
|
|
* Returns 0 if success, -2 if the transcoding fails, or -1 otherwise
|
|
* The value of @inlen after return is the number of octets consumed
|
|
* as the return value is positive, else unpredictable.
|
|
* The value of @outlen after return is the number of octets consumed.
|
|
*/
|
|
int
|
|
UTF8ToHtml(unsigned char* out, int *outlen,
|
|
const unsigned char* in, int *inlen) {
|
|
const unsigned char* processed = in;
|
|
const unsigned char* outend;
|
|
const unsigned char* outstart = out;
|
|
const unsigned char* instart = in;
|
|
const unsigned char* inend;
|
|
unsigned int c, d;
|
|
int trailing;
|
|
|
|
if ((out == NULL) || (outlen == NULL) || (inlen == NULL)) return(-1);
|
|
if (in == NULL) {
|
|
/*
|
|
* initialization nothing to do
|
|
*/
|
|
*outlen = 0;
|
|
*inlen = 0;
|
|
return(0);
|
|
}
|
|
inend = in + (*inlen);
|
|
outend = out + (*outlen);
|
|
while (in < inend) {
|
|
d = *in++;
|
|
if (d < 0x80) { c= d; trailing= 0; }
|
|
else if (d < 0xC0) {
|
|
/* trailing byte in leading position */
|
|
*outlen = out - outstart;
|
|
*inlen = processed - instart;
|
|
return(-2);
|
|
} else if (d < 0xE0) { c= d & 0x1F; trailing= 1; }
|
|
else if (d < 0xF0) { c= d & 0x0F; trailing= 2; }
|
|
else if (d < 0xF8) { c= d & 0x07; trailing= 3; }
|
|
else {
|
|
/* no chance for this in Ascii */
|
|
*outlen = out - outstart;
|
|
*inlen = processed - instart;
|
|
return(-2);
|
|
}
|
|
|
|
if (inend - in < trailing) {
|
|
break;
|
|
}
|
|
|
|
for ( ; trailing; trailing--) {
|
|
if ((in >= inend) || (((d= *in++) & 0xC0) != 0x80))
|
|
break;
|
|
c <<= 6;
|
|
c |= d & 0x3F;
|
|
}
|
|
|
|
/* assertion: c is a single UTF-4 value */
|
|
if (c < 0x80) {
|
|
if (out + 1 >= outend)
|
|
break;
|
|
*out++ = c;
|
|
} else {
|
|
int len;
|
|
const htmlEntityDesc * ent;
|
|
const char *cp;
|
|
char nbuf[16];
|
|
|
|
/*
|
|
* Try to lookup a predefined HTML entity for it
|
|
*/
|
|
|
|
ent = htmlEntityValueLookup(c);
|
|
if (ent == NULL) {
|
|
snprintf(nbuf, sizeof(nbuf), "#%u", c);
|
|
cp = nbuf;
|
|
}
|
|
else
|
|
cp = ent->name;
|
|
len = strlen(cp);
|
|
if (out + 2 + len >= outend)
|
|
break;
|
|
*out++ = '&';
|
|
memcpy(out, cp, len);
|
|
out += len;
|
|
*out++ = ';';
|
|
}
|
|
processed = in;
|
|
}
|
|
*outlen = out - outstart;
|
|
*inlen = processed - instart;
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* htmlEncodeEntities:
|
|
* @out: a pointer to an array of bytes to store the result
|
|
* @outlen: the length of @out
|
|
* @in: a pointer to an array of UTF-8 chars
|
|
* @inlen: the length of @in
|
|
* @quoteChar: the quote character to escape (' or ") or zero.
|
|
*
|
|
* Take a block of UTF-8 chars in and try to convert it to an ASCII
|
|
* plus HTML entities block of chars out.
|
|
*
|
|
* Returns 0 if success, -2 if the transcoding fails, or -1 otherwise
|
|
* The value of @inlen after return is the number of octets consumed
|
|
* as the return value is positive, else unpredictable.
|
|
* The value of @outlen after return is the number of octets consumed.
|
|
*/
|
|
int
|
|
htmlEncodeEntities(unsigned char* out, int *outlen,
|
|
const unsigned char* in, int *inlen, int quoteChar) {
|
|
const unsigned char* processed = in;
|
|
const unsigned char* outend;
|
|
const unsigned char* outstart = out;
|
|
const unsigned char* instart = in;
|
|
const unsigned char* inend;
|
|
unsigned int c, d;
|
|
int trailing;
|
|
|
|
if ((out == NULL) || (outlen == NULL) || (inlen == NULL) || (in == NULL))
|
|
return(-1);
|
|
outend = out + (*outlen);
|
|
inend = in + (*inlen);
|
|
while (in < inend) {
|
|
d = *in++;
|
|
if (d < 0x80) { c= d; trailing= 0; }
|
|
else if (d < 0xC0) {
|
|
/* trailing byte in leading position */
|
|
*outlen = out - outstart;
|
|
*inlen = processed - instart;
|
|
return(-2);
|
|
} else if (d < 0xE0) { c= d & 0x1F; trailing= 1; }
|
|
else if (d < 0xF0) { c= d & 0x0F; trailing= 2; }
|
|
else if (d < 0xF8) { c= d & 0x07; trailing= 3; }
|
|
else {
|
|
/* no chance for this in Ascii */
|
|
*outlen = out - outstart;
|
|
*inlen = processed - instart;
|
|
return(-2);
|
|
}
|
|
|
|
if (inend - in < trailing)
|
|
break;
|
|
|
|
while (trailing--) {
|
|
if (((d= *in++) & 0xC0) != 0x80) {
|
|
*outlen = out - outstart;
|
|
*inlen = processed - instart;
|
|
return(-2);
|
|
}
|
|
c <<= 6;
|
|
c |= d & 0x3F;
|
|
}
|
|
|
|
/* assertion: c is a single UTF-4 value */
|
|
if ((c < 0x80) && (c != (unsigned int) quoteChar) &&
|
|
(c != '&') && (c != '<') && (c != '>')) {
|
|
if (out >= outend)
|
|
break;
|
|
*out++ = c;
|
|
} else {
|
|
const htmlEntityDesc * ent;
|
|
const char *cp;
|
|
char nbuf[16];
|
|
int len;
|
|
|
|
/*
|
|
* Try to lookup a predefined HTML entity for it
|
|
*/
|
|
ent = htmlEntityValueLookup(c);
|
|
if (ent == NULL) {
|
|
snprintf(nbuf, sizeof(nbuf), "#%u", c);
|
|
cp = nbuf;
|
|
}
|
|
else
|
|
cp = ent->name;
|
|
len = strlen(cp);
|
|
if (out + 2 + len > outend)
|
|
break;
|
|
*out++ = '&';
|
|
memcpy(out, cp, len);
|
|
out += len;
|
|
*out++ = ';';
|
|
}
|
|
processed = in;
|
|
}
|
|
*outlen = out - outstart;
|
|
*inlen = processed - instart;
|
|
return(0);
|
|
}
|
|
|
|
/************************************************************************
|
|
* *
|
|
* Commodity functions to handle streams *
|
|
* *
|
|
************************************************************************/
|
|
|
|
#ifdef LIBXML_PUSH_ENABLED
|
|
/**
|
|
* htmlNewInputStream:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* Create a new input stream structure
|
|
* Returns the new input stream or NULL
|
|
*/
|
|
static htmlParserInputPtr
|
|
htmlNewInputStream(htmlParserCtxtPtr ctxt) {
|
|
htmlParserInputPtr input;
|
|
|
|
input = (xmlParserInputPtr) xmlMalloc(sizeof(htmlParserInput));
|
|
if (input == NULL) {
|
|
htmlErrMemory(ctxt, "couldn't allocate a new input stream\n");
|
|
return(NULL);
|
|
}
|
|
memset(input, 0, sizeof(htmlParserInput));
|
|
input->filename = NULL;
|
|
input->directory = NULL;
|
|
input->base = NULL;
|
|
input->cur = NULL;
|
|
input->buf = NULL;
|
|
input->line = 1;
|
|
input->col = 1;
|
|
input->buf = NULL;
|
|
input->free = NULL;
|
|
input->version = NULL;
|
|
input->consumed = 0;
|
|
input->length = 0;
|
|
return(input);
|
|
}
|
|
#endif
|
|
|
|
|
|
/************************************************************************
|
|
* *
|
|
* Commodity functions, cleanup needed ? *
|
|
* *
|
|
************************************************************************/
|
|
/*
|
|
* all tags allowing pc data from the html 4.01 loose dtd
|
|
* NOTE: it might be more appropriate to integrate this information
|
|
* into the html40ElementTable array but I don't want to risk any
|
|
* binary incompatibility
|
|
*/
|
|
static const char *allowPCData[] = {
|
|
"a", "abbr", "acronym", "address", "applet", "b", "bdo", "big",
|
|
"blockquote", "body", "button", "caption", "center", "cite", "code",
|
|
"dd", "del", "dfn", "div", "dt", "em", "font", "form", "h1", "h2",
|
|
"h3", "h4", "h5", "h6", "i", "iframe", "ins", "kbd", "label", "legend",
|
|
"li", "noframes", "noscript", "object", "p", "pre", "q", "s", "samp",
|
|
"small", "span", "strike", "strong", "td", "th", "tt", "u", "var"
|
|
};
|
|
|
|
/**
|
|
* areBlanks:
|
|
* @ctxt: an HTML parser context
|
|
* @str: a xmlChar *
|
|
* @len: the size of @str
|
|
*
|
|
* Is this a sequence of blank chars that one can ignore ?
|
|
*
|
|
* Returns 1 if ignorable 0 otherwise.
|
|
*/
|
|
|
|
static int areBlanks(htmlParserCtxtPtr ctxt, const xmlChar *str, int len) {
|
|
unsigned int i;
|
|
int j;
|
|
xmlNodePtr lastChild;
|
|
xmlDtdPtr dtd;
|
|
|
|
for (j = 0;j < len;j++)
|
|
if (!(IS_BLANK_CH(str[j]))) return(0);
|
|
|
|
if (CUR == 0) return(1);
|
|
if (CUR != '<') return(0);
|
|
if (ctxt->name == NULL)
|
|
return(1);
|
|
if (xmlStrEqual(ctxt->name, BAD_CAST"html"))
|
|
return(1);
|
|
if (xmlStrEqual(ctxt->name, BAD_CAST"head"))
|
|
return(1);
|
|
|
|
/* Only strip CDATA children of the body tag for strict HTML DTDs */
|
|
if (xmlStrEqual(ctxt->name, BAD_CAST "body") && ctxt->myDoc != NULL) {
|
|
dtd = xmlGetIntSubset(ctxt->myDoc);
|
|
if (dtd != NULL && dtd->ExternalID != NULL) {
|
|
if (!xmlStrcasecmp(dtd->ExternalID, BAD_CAST "-//W3C//DTD HTML 4.01//EN") ||
|
|
!xmlStrcasecmp(dtd->ExternalID, BAD_CAST "-//W3C//DTD HTML 4//EN"))
|
|
return(1);
|
|
}
|
|
}
|
|
|
|
if (ctxt->node == NULL) return(0);
|
|
lastChild = xmlGetLastChild(ctxt->node);
|
|
while ((lastChild) && (lastChild->type == XML_COMMENT_NODE))
|
|
lastChild = lastChild->prev;
|
|
if (lastChild == NULL) {
|
|
if ((ctxt->node->type != XML_ELEMENT_NODE) &&
|
|
(ctxt->node->content != NULL)) return(0);
|
|
/* keep ws in constructs like ...<b> </b>...
|
|
for all tags "b" allowing PCDATA */
|
|
for ( i = 0; i < sizeof(allowPCData)/sizeof(allowPCData[0]); i++ ) {
|
|
if ( xmlStrEqual(ctxt->name, BAD_CAST allowPCData[i]) ) {
|
|
return(0);
|
|
}
|
|
}
|
|
} else if (xmlNodeIsText(lastChild)) {
|
|
return(0);
|
|
} else {
|
|
/* keep ws in constructs like <p><b>xy</b> <i>z</i><p>
|
|
for all tags "p" allowing PCDATA */
|
|
for ( i = 0; i < sizeof(allowPCData)/sizeof(allowPCData[0]); i++ ) {
|
|
if ( xmlStrEqual(lastChild->name, BAD_CAST allowPCData[i]) ) {
|
|
return(0);
|
|
}
|
|
}
|
|
}
|
|
return(1);
|
|
}
|
|
|
|
/**
|
|
* htmlNewDocNoDtD:
|
|
* @URI: URI for the dtd, or NULL
|
|
* @ExternalID: the external ID of the DTD, or NULL
|
|
*
|
|
* Creates a new HTML document without a DTD node if @URI and @ExternalID
|
|
* are NULL
|
|
*
|
|
* Returns a new document, do not initialize the DTD if not provided
|
|
*/
|
|
htmlDocPtr
|
|
htmlNewDocNoDtD(const xmlChar *URI, const xmlChar *ExternalID) {
|
|
xmlDocPtr cur;
|
|
|
|
/*
|
|
* Allocate a new document and fill the fields.
|
|
*/
|
|
cur = (xmlDocPtr) xmlMalloc(sizeof(xmlDoc));
|
|
if (cur == NULL) {
|
|
htmlErrMemory(NULL, "HTML document creation failed\n");
|
|
return(NULL);
|
|
}
|
|
memset(cur, 0, sizeof(xmlDoc));
|
|
|
|
cur->type = XML_HTML_DOCUMENT_NODE;
|
|
cur->version = NULL;
|
|
cur->intSubset = NULL;
|
|
cur->doc = cur;
|
|
cur->name = NULL;
|
|
cur->children = NULL;
|
|
cur->extSubset = NULL;
|
|
cur->oldNs = NULL;
|
|
cur->encoding = NULL;
|
|
cur->standalone = 1;
|
|
cur->compression = 0;
|
|
cur->ids = NULL;
|
|
cur->refs = NULL;
|
|
cur->_private = NULL;
|
|
cur->charset = XML_CHAR_ENCODING_UTF8;
|
|
cur->properties = XML_DOC_HTML | XML_DOC_USERBUILT;
|
|
if ((ExternalID != NULL) ||
|
|
(URI != NULL))
|
|
xmlCreateIntSubset(cur, BAD_CAST "html", ExternalID, URI);
|
|
return(cur);
|
|
}
|
|
|
|
/**
|
|
* htmlNewDoc:
|
|
* @URI: URI for the dtd, or NULL
|
|
* @ExternalID: the external ID of the DTD, or NULL
|
|
*
|
|
* Creates a new HTML document
|
|
*
|
|
* Returns a new document
|
|
*/
|
|
htmlDocPtr
|
|
htmlNewDoc(const xmlChar *URI, const xmlChar *ExternalID) {
|
|
if ((URI == NULL) && (ExternalID == NULL))
|
|
return(htmlNewDocNoDtD(
|
|
BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd",
|
|
BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN"));
|
|
|
|
return(htmlNewDocNoDtD(URI, ExternalID));
|
|
}
|
|
|
|
|
|
/************************************************************************
|
|
* *
|
|
* The parser itself *
|
|
* Relates to http://www.w3.org/TR/html40 *
|
|
* *
|
|
************************************************************************/
|
|
|
|
/************************************************************************
|
|
* *
|
|
* The parser itself *
|
|
* *
|
|
************************************************************************/
|
|
|
|
static const xmlChar * htmlParseNameComplex(xmlParserCtxtPtr ctxt);
|
|
|
|
/**
|
|
* htmlParseHTMLName:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* parse an HTML tag or attribute name, note that we convert it to lowercase
|
|
* since HTML names are not case-sensitive.
|
|
*
|
|
* Returns the Tag Name parsed or NULL
|
|
*/
|
|
|
|
static const xmlChar *
|
|
htmlParseHTMLName(htmlParserCtxtPtr ctxt) {
|
|
int i = 0;
|
|
xmlChar loc[HTML_PARSER_BUFFER_SIZE];
|
|
|
|
if (!IS_ASCII_LETTER(CUR) && (CUR != '_') &&
|
|
(CUR != ':') && (CUR != '.')) return(NULL);
|
|
|
|
while ((i < HTML_PARSER_BUFFER_SIZE) &&
|
|
((IS_ASCII_LETTER(CUR)) || (IS_ASCII_DIGIT(CUR)) ||
|
|
(CUR == ':') || (CUR == '-') || (CUR == '_') ||
|
|
(CUR == '.'))) {
|
|
if ((CUR >= 'A') && (CUR <= 'Z')) loc[i] = CUR + 0x20;
|
|
else loc[i] = CUR;
|
|
i++;
|
|
|
|
NEXT;
|
|
}
|
|
|
|
return(xmlDictLookup(ctxt->dict, loc, i));
|
|
}
|
|
|
|
|
|
/**
|
|
* htmlParseHTMLName_nonInvasive:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* parse an HTML tag or attribute name, note that we convert it to lowercase
|
|
* since HTML names are not case-sensitive, this doesn't consume the data
|
|
* from the stream, it's a look-ahead
|
|
*
|
|
* Returns the Tag Name parsed or NULL
|
|
*/
|
|
|
|
static const xmlChar *
|
|
htmlParseHTMLName_nonInvasive(htmlParserCtxtPtr ctxt) {
|
|
int i = 0;
|
|
xmlChar loc[HTML_PARSER_BUFFER_SIZE];
|
|
|
|
if (!IS_ASCII_LETTER(NXT(1)) && (NXT(1) != '_') &&
|
|
(NXT(1) != ':')) return(NULL);
|
|
|
|
while ((i < HTML_PARSER_BUFFER_SIZE) &&
|
|
((IS_ASCII_LETTER(NXT(1+i))) || (IS_ASCII_DIGIT(NXT(1+i))) ||
|
|
(NXT(1+i) == ':') || (NXT(1+i) == '-') || (NXT(1+i) == '_'))) {
|
|
if ((NXT(1+i) >= 'A') && (NXT(1+i) <= 'Z')) loc[i] = NXT(1+i) + 0x20;
|
|
else loc[i] = NXT(1+i);
|
|
i++;
|
|
}
|
|
|
|
return(xmlDictLookup(ctxt->dict, loc, i));
|
|
}
|
|
|
|
|
|
/**
|
|
* htmlParseName:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* parse an HTML name, this routine is case sensitive.
|
|
*
|
|
* Returns the Name parsed or NULL
|
|
*/
|
|
|
|
static const xmlChar *
|
|
htmlParseName(htmlParserCtxtPtr ctxt) {
|
|
const xmlChar *in;
|
|
const xmlChar *ret;
|
|
int count = 0;
|
|
|
|
GROW;
|
|
|
|
/*
|
|
* Accelerator for simple ASCII names
|
|
*/
|
|
in = ctxt->input->cur;
|
|
if (((*in >= 0x61) && (*in <= 0x7A)) ||
|
|
((*in >= 0x41) && (*in <= 0x5A)) ||
|
|
(*in == '_') || (*in == ':')) {
|
|
in++;
|
|
while (((*in >= 0x61) && (*in <= 0x7A)) ||
|
|
((*in >= 0x41) && (*in <= 0x5A)) ||
|
|
((*in >= 0x30) && (*in <= 0x39)) ||
|
|
(*in == '_') || (*in == '-') ||
|
|
(*in == ':') || (*in == '.'))
|
|
in++;
|
|
|
|
if (in == ctxt->input->end)
|
|
return(NULL);
|
|
|
|
if ((*in > 0) && (*in < 0x80)) {
|
|
count = in - ctxt->input->cur;
|
|
ret = xmlDictLookup(ctxt->dict, ctxt->input->cur, count);
|
|
ctxt->input->cur = in;
|
|
ctxt->input->col += count;
|
|
return(ret);
|
|
}
|
|
}
|
|
return(htmlParseNameComplex(ctxt));
|
|
}
|
|
|
|
static const xmlChar *
|
|
htmlParseNameComplex(xmlParserCtxtPtr ctxt) {
|
|
int len = 0, l;
|
|
int c;
|
|
int count = 0;
|
|
const xmlChar *base = ctxt->input->base;
|
|
|
|
/*
|
|
* Handler for more complex cases
|
|
*/
|
|
GROW;
|
|
c = CUR_CHAR(l);
|
|
if ((c == ' ') || (c == '>') || (c == '/') || /* accelerators */
|
|
(!IS_LETTER(c) && (c != '_') &&
|
|
(c != ':'))) {
|
|
return(NULL);
|
|
}
|
|
|
|
while ((c != ' ') && (c != '>') && (c != '/') && /* test bigname.xml */
|
|
((IS_LETTER(c)) || (IS_DIGIT(c)) ||
|
|
(c == '.') || (c == '-') ||
|
|
(c == '_') || (c == ':') ||
|
|
(IS_COMBINING(c)) ||
|
|
(IS_EXTENDER(c)))) {
|
|
if (count++ > 100) {
|
|
count = 0;
|
|
GROW;
|
|
}
|
|
len += l;
|
|
NEXTL(l);
|
|
c = CUR_CHAR(l);
|
|
if (ctxt->input->base != base) {
|
|
/*
|
|
* We changed encoding from an unknown encoding
|
|
* Input buffer changed location, so we better start again
|
|
*/
|
|
return(htmlParseNameComplex(ctxt));
|
|
}
|
|
}
|
|
|
|
if (ctxt->input->cur - ctxt->input->base < len) {
|
|
/* Sanity check */
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"unexpected change of input buffer", NULL, NULL);
|
|
return (NULL);
|
|
}
|
|
|
|
return(xmlDictLookup(ctxt->dict, ctxt->input->cur - len, len));
|
|
}
|
|
|
|
|
|
/**
|
|
* htmlParseHTMLAttribute:
|
|
* @ctxt: an HTML parser context
|
|
* @stop: a char stop value
|
|
*
|
|
* parse an HTML attribute value till the stop (quote), if
|
|
* stop is 0 then it stops at the first space
|
|
*
|
|
* Returns the attribute parsed or NULL
|
|
*/
|
|
|
|
static xmlChar *
|
|
htmlParseHTMLAttribute(htmlParserCtxtPtr ctxt, const xmlChar stop) {
|
|
xmlChar *buffer = NULL;
|
|
int buffer_size = 0;
|
|
xmlChar *out = NULL;
|
|
const xmlChar *name = NULL;
|
|
const xmlChar *cur = NULL;
|
|
const htmlEntityDesc * ent;
|
|
|
|
/*
|
|
* allocate a translation buffer.
|
|
*/
|
|
buffer_size = HTML_PARSER_BUFFER_SIZE;
|
|
buffer = (xmlChar *) xmlMallocAtomic(buffer_size * sizeof(xmlChar));
|
|
if (buffer == NULL) {
|
|
htmlErrMemory(ctxt, "buffer allocation failed\n");
|
|
return(NULL);
|
|
}
|
|
out = buffer;
|
|
|
|
/*
|
|
* Ok loop until we reach one of the ending chars
|
|
*/
|
|
while ((CUR != 0) && (CUR != stop)) {
|
|
if ((stop == 0) && (CUR == '>')) break;
|
|
if ((stop == 0) && (IS_BLANK_CH(CUR))) break;
|
|
if (CUR == '&') {
|
|
if (NXT(1) == '#') {
|
|
unsigned int c;
|
|
int bits;
|
|
|
|
c = htmlParseCharRef(ctxt);
|
|
if (c < 0x80)
|
|
{ *out++ = c; bits= -6; }
|
|
else if (c < 0x800)
|
|
{ *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; }
|
|
else if (c < 0x10000)
|
|
{ *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; }
|
|
else
|
|
{ *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; }
|
|
|
|
for ( ; bits >= 0; bits-= 6) {
|
|
*out++ = ((c >> bits) & 0x3F) | 0x80;
|
|
}
|
|
|
|
if (out - buffer > buffer_size - 100) {
|
|
int indx = out - buffer;
|
|
|
|
growBuffer(buffer);
|
|
out = &buffer[indx];
|
|
}
|
|
} else {
|
|
ent = htmlParseEntityRef(ctxt, &name);
|
|
if (name == NULL) {
|
|
*out++ = '&';
|
|
if (out - buffer > buffer_size - 100) {
|
|
int indx = out - buffer;
|
|
|
|
growBuffer(buffer);
|
|
out = &buffer[indx];
|
|
}
|
|
} else if (ent == NULL) {
|
|
*out++ = '&';
|
|
cur = name;
|
|
while (*cur != 0) {
|
|
if (out - buffer > buffer_size - 100) {
|
|
int indx = out - buffer;
|
|
|
|
growBuffer(buffer);
|
|
out = &buffer[indx];
|
|
}
|
|
*out++ = *cur++;
|
|
}
|
|
} else {
|
|
unsigned int c;
|
|
int bits;
|
|
|
|
if (out - buffer > buffer_size - 100) {
|
|
int indx = out - buffer;
|
|
|
|
growBuffer(buffer);
|
|
out = &buffer[indx];
|
|
}
|
|
c = ent->value;
|
|
if (c < 0x80)
|
|
{ *out++ = c; bits= -6; }
|
|
else if (c < 0x800)
|
|
{ *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; }
|
|
else if (c < 0x10000)
|
|
{ *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; }
|
|
else
|
|
{ *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; }
|
|
|
|
for ( ; bits >= 0; bits-= 6) {
|
|
*out++ = ((c >> bits) & 0x3F) | 0x80;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
unsigned int c;
|
|
int bits, l;
|
|
|
|
if (out - buffer > buffer_size - 100) {
|
|
int indx = out - buffer;
|
|
|
|
growBuffer(buffer);
|
|
out = &buffer[indx];
|
|
}
|
|
c = CUR_CHAR(l);
|
|
if (c < 0x80)
|
|
{ *out++ = c; bits= -6; }
|
|
else if (c < 0x800)
|
|
{ *out++ =((c >> 6) & 0x1F) | 0xC0; bits= 0; }
|
|
else if (c < 0x10000)
|
|
{ *out++ =((c >> 12) & 0x0F) | 0xE0; bits= 6; }
|
|
else
|
|
{ *out++ =((c >> 18) & 0x07) | 0xF0; bits= 12; }
|
|
|
|
for ( ; bits >= 0; bits-= 6) {
|
|
*out++ = ((c >> bits) & 0x3F) | 0x80;
|
|
}
|
|
NEXT;
|
|
}
|
|
}
|
|
*out = 0;
|
|
return(buffer);
|
|
}
|
|
|
|
/**
|
|
* htmlParseEntityRef:
|
|
* @ctxt: an HTML parser context
|
|
* @str: location to store the entity name
|
|
*
|
|
* parse an HTML ENTITY references
|
|
*
|
|
* [68] EntityRef ::= '&' Name ';'
|
|
*
|
|
* Returns the associated htmlEntityDescPtr if found, or NULL otherwise,
|
|
* if non-NULL *str will have to be freed by the caller.
|
|
*/
|
|
const htmlEntityDesc *
|
|
htmlParseEntityRef(htmlParserCtxtPtr ctxt, const xmlChar **str) {
|
|
const xmlChar *name;
|
|
const htmlEntityDesc * ent = NULL;
|
|
|
|
if (str != NULL) *str = NULL;
|
|
if ((ctxt == NULL) || (ctxt->input == NULL)) return(NULL);
|
|
|
|
if (CUR == '&') {
|
|
NEXT;
|
|
name = htmlParseName(ctxt);
|
|
if (name == NULL) {
|
|
htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
|
|
"htmlParseEntityRef: no name\n", NULL, NULL);
|
|
} else {
|
|
GROW;
|
|
if (CUR == ';') {
|
|
if (str != NULL)
|
|
*str = name;
|
|
|
|
/*
|
|
* Lookup the entity in the table.
|
|
*/
|
|
ent = htmlEntityLookup(name);
|
|
if (ent != NULL) /* OK that's ugly !!! */
|
|
NEXT;
|
|
} else {
|
|
htmlParseErr(ctxt, XML_ERR_ENTITYREF_SEMICOL_MISSING,
|
|
"htmlParseEntityRef: expecting ';'\n",
|
|
NULL, NULL);
|
|
if (str != NULL)
|
|
*str = name;
|
|
}
|
|
}
|
|
}
|
|
return(ent);
|
|
}
|
|
|
|
/**
|
|
* htmlParseAttValue:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* parse a value for an attribute
|
|
* Note: the parser won't do substitution of entities here, this
|
|
* will be handled later in xmlStringGetNodeList, unless it was
|
|
* asked for ctxt->replaceEntities != 0
|
|
*
|
|
* Returns the AttValue parsed or NULL.
|
|
*/
|
|
|
|
static xmlChar *
|
|
htmlParseAttValue(htmlParserCtxtPtr ctxt) {
|
|
xmlChar *ret = NULL;
|
|
|
|
if (CUR == '"') {
|
|
NEXT;
|
|
ret = htmlParseHTMLAttribute(ctxt, '"');
|
|
if (CUR != '"') {
|
|
htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
|
|
"AttValue: \" expected\n", NULL, NULL);
|
|
} else
|
|
NEXT;
|
|
} else if (CUR == '\'') {
|
|
NEXT;
|
|
ret = htmlParseHTMLAttribute(ctxt, '\'');
|
|
if (CUR != '\'') {
|
|
htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
|
|
"AttValue: ' expected\n", NULL, NULL);
|
|
} else
|
|
NEXT;
|
|
} else {
|
|
/*
|
|
* That's an HTMLism, the attribute value may not be quoted
|
|
*/
|
|
ret = htmlParseHTMLAttribute(ctxt, 0);
|
|
if (ret == NULL) {
|
|
htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_WITHOUT_VALUE,
|
|
"AttValue: no value found\n", NULL, NULL);
|
|
}
|
|
}
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* htmlParseSystemLiteral:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* parse an HTML Literal
|
|
*
|
|
* [11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'")
|
|
*
|
|
* Returns the SystemLiteral parsed or NULL
|
|
*/
|
|
|
|
static xmlChar *
|
|
htmlParseSystemLiteral(htmlParserCtxtPtr ctxt) {
|
|
size_t len = 0, startPosition = 0;
|
|
int err = 0;
|
|
int quote;
|
|
xmlChar *ret = NULL;
|
|
|
|
if ((CUR != '"') && (CUR != '\'')) {
|
|
htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_STARTED,
|
|
"SystemLiteral \" or ' expected\n", NULL, NULL);
|
|
return(NULL);
|
|
}
|
|
quote = CUR;
|
|
NEXT;
|
|
|
|
if (CUR_PTR < BASE_PTR)
|
|
return(ret);
|
|
startPosition = CUR_PTR - BASE_PTR;
|
|
|
|
while ((CUR != 0) && (CUR != quote)) {
|
|
/* TODO: Handle UTF-8 */
|
|
if (!IS_CHAR_CH(CUR)) {
|
|
htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Invalid char in SystemLiteral 0x%X\n", CUR);
|
|
err = 1;
|
|
}
|
|
NEXT;
|
|
len++;
|
|
}
|
|
if (CUR != quote) {
|
|
htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED,
|
|
"Unfinished SystemLiteral\n", NULL, NULL);
|
|
} else {
|
|
NEXT;
|
|
if (err == 0)
|
|
ret = xmlStrndup((BASE_PTR+startPosition), len);
|
|
}
|
|
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* htmlParsePubidLiteral:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* parse an HTML public literal
|
|
*
|
|
* [12] PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'"
|
|
*
|
|
* Returns the PubidLiteral parsed or NULL.
|
|
*/
|
|
|
|
static xmlChar *
|
|
htmlParsePubidLiteral(htmlParserCtxtPtr ctxt) {
|
|
size_t len = 0, startPosition = 0;
|
|
int err = 0;
|
|
int quote;
|
|
xmlChar *ret = NULL;
|
|
|
|
if ((CUR != '"') && (CUR != '\'')) {
|
|
htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_STARTED,
|
|
"PubidLiteral \" or ' expected\n", NULL, NULL);
|
|
return(NULL);
|
|
}
|
|
quote = CUR;
|
|
NEXT;
|
|
|
|
/*
|
|
* Name ::= (Letter | '_') (NameChar)*
|
|
*/
|
|
if (CUR_PTR < BASE_PTR)
|
|
return(ret);
|
|
startPosition = CUR_PTR - BASE_PTR;
|
|
|
|
while ((CUR != 0) && (CUR != quote)) {
|
|
if (!IS_PUBIDCHAR_CH(CUR)) {
|
|
htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Invalid char in PubidLiteral 0x%X\n", CUR);
|
|
err = 1;
|
|
}
|
|
len++;
|
|
NEXT;
|
|
}
|
|
|
|
if (CUR != '"') {
|
|
htmlParseErr(ctxt, XML_ERR_LITERAL_NOT_FINISHED,
|
|
"Unfinished PubidLiteral\n", NULL, NULL);
|
|
} else {
|
|
NEXT;
|
|
if (err == 0)
|
|
ret = xmlStrndup((BASE_PTR + startPosition), len);
|
|
}
|
|
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* htmlParseScript:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* parse the content of an HTML SCRIPT or STYLE element
|
|
* http://www.w3.org/TR/html4/sgml/dtd.html#Script
|
|
* http://www.w3.org/TR/html4/sgml/dtd.html#StyleSheet
|
|
* http://www.w3.org/TR/html4/types.html#type-script
|
|
* http://www.w3.org/TR/html4/types.html#h-6.15
|
|
* http://www.w3.org/TR/html4/appendix/notes.html#h-B.3.2.1
|
|
*
|
|
* Script data ( %Script; in the DTD) can be the content of the SCRIPT
|
|
* element and the value of intrinsic event attributes. User agents must
|
|
* not evaluate script data as HTML markup but instead must pass it on as
|
|
* data to a script engine.
|
|
* NOTES:
|
|
* - The content is passed like CDATA
|
|
* - the attributes for style and scripting "onXXX" are also described
|
|
* as CDATA but SGML allows entities references in attributes so their
|
|
* processing is identical as other attributes
|
|
*/
|
|
static void
|
|
htmlParseScript(htmlParserCtxtPtr ctxt) {
|
|
xmlChar buf[HTML_PARSER_BIG_BUFFER_SIZE + 5];
|
|
int nbchar = 0;
|
|
int cur,l;
|
|
|
|
SHRINK;
|
|
cur = CUR_CHAR(l);
|
|
while (cur != 0) {
|
|
if ((cur == '<') && (NXT(1) == '/')) {
|
|
/*
|
|
* One should break here, the specification is clear:
|
|
* Authors should therefore escape "</" within the content.
|
|
* Escape mechanisms are specific to each scripting or
|
|
* style sheet language.
|
|
*
|
|
* In recovery mode, only break if end tag match the
|
|
* current tag, effectively ignoring all tags inside the
|
|
* script/style block and treating the entire block as
|
|
* CDATA.
|
|
*/
|
|
if (ctxt->recovery) {
|
|
if (xmlStrncasecmp(ctxt->name, ctxt->input->cur+2,
|
|
xmlStrlen(ctxt->name)) == 0)
|
|
{
|
|
break; /* while */
|
|
} else {
|
|
htmlParseErr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
|
|
"Element %s embeds close tag\n",
|
|
ctxt->name, NULL);
|
|
}
|
|
} else {
|
|
if (((NXT(2) >= 'A') && (NXT(2) <= 'Z')) ||
|
|
((NXT(2) >= 'a') && (NXT(2) <= 'z')))
|
|
{
|
|
break; /* while */
|
|
}
|
|
}
|
|
}
|
|
if (IS_CHAR(cur)) {
|
|
COPY_BUF(l,buf,nbchar,cur);
|
|
} else {
|
|
htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Invalid char in CDATA 0x%X\n", cur);
|
|
}
|
|
if (nbchar >= HTML_PARSER_BIG_BUFFER_SIZE) {
|
|
buf[nbchar] = 0;
|
|
if (ctxt->sax->cdataBlock!= NULL) {
|
|
/*
|
|
* Insert as CDATA, which is the same as HTML_PRESERVE_NODE
|
|
*/
|
|
ctxt->sax->cdataBlock(ctxt->userData, buf, nbchar);
|
|
} else if (ctxt->sax->characters != NULL) {
|
|
ctxt->sax->characters(ctxt->userData, buf, nbchar);
|
|
}
|
|
nbchar = 0;
|
|
}
|
|
GROW;
|
|
NEXTL(l);
|
|
cur = CUR_CHAR(l);
|
|
}
|
|
|
|
if ((nbchar != 0) && (ctxt->sax != NULL) && (!ctxt->disableSAX)) {
|
|
buf[nbchar] = 0;
|
|
if (ctxt->sax->cdataBlock!= NULL) {
|
|
/*
|
|
* Insert as CDATA, which is the same as HTML_PRESERVE_NODE
|
|
*/
|
|
ctxt->sax->cdataBlock(ctxt->userData, buf, nbchar);
|
|
} else if (ctxt->sax->characters != NULL) {
|
|
ctxt->sax->characters(ctxt->userData, buf, nbchar);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* htmlParseCharDataInternal:
|
|
* @ctxt: an HTML parser context
|
|
* @readahead: optional read ahead character in ascii range
|
|
*
|
|
* parse a CharData section.
|
|
* if we are within a CDATA section ']]>' marks an end of section.
|
|
*
|
|
* [14] CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*)
|
|
*/
|
|
|
|
static void
|
|
htmlParseCharDataInternal(htmlParserCtxtPtr ctxt, int readahead) {
|
|
xmlChar buf[HTML_PARSER_BIG_BUFFER_SIZE + 6];
|
|
int nbchar = 0;
|
|
int cur, l;
|
|
int chunk = 0;
|
|
|
|
if (readahead)
|
|
buf[nbchar++] = readahead;
|
|
|
|
SHRINK;
|
|
cur = CUR_CHAR(l);
|
|
while (((cur != '<') || (ctxt->token == '<')) &&
|
|
((cur != '&') || (ctxt->token == '&')) &&
|
|
(cur != 0)) {
|
|
if (!(IS_CHAR(cur))) {
|
|
htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Invalid char in CDATA 0x%X\n", cur);
|
|
} else {
|
|
COPY_BUF(l,buf,nbchar,cur);
|
|
}
|
|
if (nbchar >= HTML_PARSER_BIG_BUFFER_SIZE) {
|
|
buf[nbchar] = 0;
|
|
|
|
/*
|
|
* Ok the segment is to be consumed as chars.
|
|
*/
|
|
if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
|
|
if (areBlanks(ctxt, buf, nbchar)) {
|
|
if (ctxt->keepBlanks) {
|
|
if (ctxt->sax->characters != NULL)
|
|
ctxt->sax->characters(ctxt->userData, buf, nbchar);
|
|
} else {
|
|
if (ctxt->sax->ignorableWhitespace != NULL)
|
|
ctxt->sax->ignorableWhitespace(ctxt->userData,
|
|
buf, nbchar);
|
|
}
|
|
} else {
|
|
htmlCheckParagraph(ctxt);
|
|
if (ctxt->sax->characters != NULL)
|
|
ctxt->sax->characters(ctxt->userData, buf, nbchar);
|
|
}
|
|
}
|
|
nbchar = 0;
|
|
}
|
|
NEXTL(l);
|
|
chunk++;
|
|
if (chunk > HTML_PARSER_BUFFER_SIZE) {
|
|
chunk = 0;
|
|
SHRINK;
|
|
GROW;
|
|
}
|
|
cur = CUR_CHAR(l);
|
|
if (cur == 0) {
|
|
SHRINK;
|
|
GROW;
|
|
cur = CUR_CHAR(l);
|
|
}
|
|
}
|
|
if (nbchar != 0) {
|
|
buf[nbchar] = 0;
|
|
|
|
/*
|
|
* Ok the segment is to be consumed as chars.
|
|
*/
|
|
if ((ctxt->sax != NULL) && (!ctxt->disableSAX)) {
|
|
if (areBlanks(ctxt, buf, nbchar)) {
|
|
if (ctxt->keepBlanks) {
|
|
if (ctxt->sax->characters != NULL)
|
|
ctxt->sax->characters(ctxt->userData, buf, nbchar);
|
|
} else {
|
|
if (ctxt->sax->ignorableWhitespace != NULL)
|
|
ctxt->sax->ignorableWhitespace(ctxt->userData,
|
|
buf, nbchar);
|
|
}
|
|
} else {
|
|
htmlCheckParagraph(ctxt);
|
|
if (ctxt->sax->characters != NULL)
|
|
ctxt->sax->characters(ctxt->userData, buf, nbchar);
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* Loop detection
|
|
*/
|
|
if (cur == 0)
|
|
ctxt->instate = XML_PARSER_EOF;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* htmlParseCharData:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* parse a CharData section.
|
|
* if we are within a CDATA section ']]>' marks an end of section.
|
|
*
|
|
* [14] CharData ::= [^<&]* - ([^<&]* ']]>' [^<&]*)
|
|
*/
|
|
|
|
static void
|
|
htmlParseCharData(htmlParserCtxtPtr ctxt) {
|
|
htmlParseCharDataInternal(ctxt, 0);
|
|
}
|
|
|
|
/**
|
|
* htmlParseExternalID:
|
|
* @ctxt: an HTML parser context
|
|
* @publicID: a xmlChar** receiving PubidLiteral
|
|
*
|
|
* Parse an External ID or a Public ID
|
|
*
|
|
* [75] ExternalID ::= 'SYSTEM' S SystemLiteral
|
|
* | 'PUBLIC' S PubidLiteral S SystemLiteral
|
|
*
|
|
* [83] PublicID ::= 'PUBLIC' S PubidLiteral
|
|
*
|
|
* Returns the function returns SystemLiteral and in the second
|
|
* case publicID receives PubidLiteral, is strict is off
|
|
* it is possible to return NULL and have publicID set.
|
|
*/
|
|
|
|
static xmlChar *
|
|
htmlParseExternalID(htmlParserCtxtPtr ctxt, xmlChar **publicID) {
|
|
xmlChar *URI = NULL;
|
|
|
|
if ((UPPER == 'S') && (UPP(1) == 'Y') &&
|
|
(UPP(2) == 'S') && (UPP(3) == 'T') &&
|
|
(UPP(4) == 'E') && (UPP(5) == 'M')) {
|
|
SKIP(6);
|
|
if (!IS_BLANK_CH(CUR)) {
|
|
htmlParseErr(ctxt, XML_ERR_SPACE_REQUIRED,
|
|
"Space required after 'SYSTEM'\n", NULL, NULL);
|
|
}
|
|
SKIP_BLANKS;
|
|
URI = htmlParseSystemLiteral(ctxt);
|
|
if (URI == NULL) {
|
|
htmlParseErr(ctxt, XML_ERR_URI_REQUIRED,
|
|
"htmlParseExternalID: SYSTEM, no URI\n", NULL, NULL);
|
|
}
|
|
} else if ((UPPER == 'P') && (UPP(1) == 'U') &&
|
|
(UPP(2) == 'B') && (UPP(3) == 'L') &&
|
|
(UPP(4) == 'I') && (UPP(5) == 'C')) {
|
|
SKIP(6);
|
|
if (!IS_BLANK_CH(CUR)) {
|
|
htmlParseErr(ctxt, XML_ERR_SPACE_REQUIRED,
|
|
"Space required after 'PUBLIC'\n", NULL, NULL);
|
|
}
|
|
SKIP_BLANKS;
|
|
*publicID = htmlParsePubidLiteral(ctxt);
|
|
if (*publicID == NULL) {
|
|
htmlParseErr(ctxt, XML_ERR_PUBID_REQUIRED,
|
|
"htmlParseExternalID: PUBLIC, no Public Identifier\n",
|
|
NULL, NULL);
|
|
}
|
|
SKIP_BLANKS;
|
|
if ((CUR == '"') || (CUR == '\'')) {
|
|
URI = htmlParseSystemLiteral(ctxt);
|
|
}
|
|
}
|
|
return(URI);
|
|
}
|
|
|
|
/**
|
|
* xmlParsePI:
|
|
* @ctxt: an XML parser context
|
|
*
|
|
* parse an XML Processing Instruction.
|
|
*
|
|
* [16] PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'
|
|
*/
|
|
static void
|
|
htmlParsePI(htmlParserCtxtPtr ctxt) {
|
|
xmlChar *buf = NULL;
|
|
int len = 0;
|
|
int size = HTML_PARSER_BUFFER_SIZE;
|
|
int cur, l;
|
|
const xmlChar *target;
|
|
xmlParserInputState state;
|
|
int count = 0;
|
|
|
|
if ((RAW == '<') && (NXT(1) == '?')) {
|
|
state = ctxt->instate;
|
|
ctxt->instate = XML_PARSER_PI;
|
|
/*
|
|
* this is a Processing Instruction.
|
|
*/
|
|
SKIP(2);
|
|
SHRINK;
|
|
|
|
/*
|
|
* Parse the target name and check for special support like
|
|
* namespace.
|
|
*/
|
|
target = htmlParseName(ctxt);
|
|
if (target != NULL) {
|
|
if (RAW == '>') {
|
|
SKIP(1);
|
|
|
|
/*
|
|
* SAX: PI detected.
|
|
*/
|
|
if ((ctxt->sax) && (!ctxt->disableSAX) &&
|
|
(ctxt->sax->processingInstruction != NULL))
|
|
ctxt->sax->processingInstruction(ctxt->userData,
|
|
target, NULL);
|
|
ctxt->instate = state;
|
|
return;
|
|
}
|
|
buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar));
|
|
if (buf == NULL) {
|
|
htmlErrMemory(ctxt, NULL);
|
|
ctxt->instate = state;
|
|
return;
|
|
}
|
|
cur = CUR;
|
|
if (!IS_BLANK(cur)) {
|
|
htmlParseErr(ctxt, XML_ERR_SPACE_REQUIRED,
|
|
"ParsePI: PI %s space expected\n", target, NULL);
|
|
}
|
|
SKIP_BLANKS;
|
|
cur = CUR_CHAR(l);
|
|
while ((cur != 0) && (cur != '>')) {
|
|
if (len + 5 >= size) {
|
|
xmlChar *tmp;
|
|
|
|
size *= 2;
|
|
tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar));
|
|
if (tmp == NULL) {
|
|
htmlErrMemory(ctxt, NULL);
|
|
xmlFree(buf);
|
|
ctxt->instate = state;
|
|
return;
|
|
}
|
|
buf = tmp;
|
|
}
|
|
count++;
|
|
if (count > 50) {
|
|
GROW;
|
|
count = 0;
|
|
}
|
|
if (IS_CHAR(cur)) {
|
|
COPY_BUF(l,buf,len,cur);
|
|
} else {
|
|
htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Invalid char in processing instruction "
|
|
"0x%X\n", cur);
|
|
}
|
|
NEXTL(l);
|
|
cur = CUR_CHAR(l);
|
|
if (cur == 0) {
|
|
SHRINK;
|
|
GROW;
|
|
cur = CUR_CHAR(l);
|
|
}
|
|
}
|
|
buf[len] = 0;
|
|
if (cur != '>') {
|
|
htmlParseErr(ctxt, XML_ERR_PI_NOT_FINISHED,
|
|
"ParsePI: PI %s never end ...\n", target, NULL);
|
|
} else {
|
|
SKIP(1);
|
|
|
|
/*
|
|
* SAX: PI detected.
|
|
*/
|
|
if ((ctxt->sax) && (!ctxt->disableSAX) &&
|
|
(ctxt->sax->processingInstruction != NULL))
|
|
ctxt->sax->processingInstruction(ctxt->userData,
|
|
target, buf);
|
|
}
|
|
xmlFree(buf);
|
|
} else {
|
|
htmlParseErr(ctxt, XML_ERR_PI_NOT_STARTED,
|
|
"PI is not started correctly", NULL, NULL);
|
|
}
|
|
ctxt->instate = state;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* htmlParseComment:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* Parse an XML (SGML) comment <!-- .... -->
|
|
*
|
|
* [15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
|
|
*/
|
|
static void
|
|
htmlParseComment(htmlParserCtxtPtr ctxt) {
|
|
xmlChar *buf = NULL;
|
|
int len;
|
|
int size = HTML_PARSER_BUFFER_SIZE;
|
|
int q, ql;
|
|
int r, rl;
|
|
int cur, l;
|
|
int next, nl;
|
|
xmlParserInputState state;
|
|
|
|
/*
|
|
* Check that there is a comment right here.
|
|
*/
|
|
if ((RAW != '<') || (NXT(1) != '!') ||
|
|
(NXT(2) != '-') || (NXT(3) != '-')) return;
|
|
|
|
state = ctxt->instate;
|
|
ctxt->instate = XML_PARSER_COMMENT;
|
|
SHRINK;
|
|
SKIP(4);
|
|
buf = (xmlChar *) xmlMallocAtomic(size * sizeof(xmlChar));
|
|
if (buf == NULL) {
|
|
htmlErrMemory(ctxt, "buffer allocation failed\n");
|
|
ctxt->instate = state;
|
|
return;
|
|
}
|
|
len = 0;
|
|
buf[len] = 0;
|
|
q = CUR_CHAR(ql);
|
|
if (q == 0)
|
|
goto unfinished;
|
|
NEXTL(ql);
|
|
r = CUR_CHAR(rl);
|
|
if (r == 0)
|
|
goto unfinished;
|
|
NEXTL(rl);
|
|
cur = CUR_CHAR(l);
|
|
while ((cur != 0) &&
|
|
((cur != '>') ||
|
|
(r != '-') || (q != '-'))) {
|
|
NEXTL(l);
|
|
next = CUR_CHAR(nl);
|
|
if (next == 0) {
|
|
SHRINK;
|
|
GROW;
|
|
next = CUR_CHAR(nl);
|
|
}
|
|
|
|
if ((q == '-') && (r == '-') && (cur == '!') && (next == '>')) {
|
|
htmlParseErr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
|
|
"Comment incorrectly closed by '--!>'", NULL, NULL);
|
|
cur = '>';
|
|
break;
|
|
}
|
|
|
|
if (len + 5 >= size) {
|
|
xmlChar *tmp;
|
|
|
|
size *= 2;
|
|
tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar));
|
|
if (tmp == NULL) {
|
|
xmlFree(buf);
|
|
htmlErrMemory(ctxt, "growing buffer failed\n");
|
|
ctxt->instate = state;
|
|
return;
|
|
}
|
|
buf = tmp;
|
|
}
|
|
if (IS_CHAR(q)) {
|
|
COPY_BUF(ql,buf,len,q);
|
|
} else {
|
|
htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Invalid char in comment 0x%X\n", q);
|
|
}
|
|
|
|
q = r;
|
|
ql = rl;
|
|
r = cur;
|
|
rl = l;
|
|
cur = next;
|
|
l = nl;
|
|
}
|
|
buf[len] = 0;
|
|
if (cur == '>') {
|
|
NEXT;
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->comment != NULL) &&
|
|
(!ctxt->disableSAX))
|
|
ctxt->sax->comment(ctxt->userData, buf);
|
|
xmlFree(buf);
|
|
ctxt->instate = state;
|
|
return;
|
|
}
|
|
|
|
unfinished:
|
|
htmlParseErr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
|
|
"Comment not terminated \n<!--%.50s\n", buf, NULL);
|
|
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 ((ctxt == NULL) || (ctxt->input == NULL)) {
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"htmlParseCharRef: context error\n",
|
|
NULL, NULL);
|
|
return(0);
|
|
}
|
|
if ((CUR == '&') && (NXT(1) == '#') &&
|
|
((NXT(2) == 'x') || NXT(2) == 'X')) {
|
|
SKIP(3);
|
|
while (CUR != ';') {
|
|
if ((CUR >= '0') && (CUR <= '9')) {
|
|
if (val < 0x110000)
|
|
val = val * 16 + (CUR - '0');
|
|
} else if ((CUR >= 'a') && (CUR <= 'f')) {
|
|
if (val < 0x110000)
|
|
val = val * 16 + (CUR - 'a') + 10;
|
|
} else if ((CUR >= 'A') && (CUR <= 'F')) {
|
|
if (val < 0x110000)
|
|
val = val * 16 + (CUR - 'A') + 10;
|
|
} else {
|
|
htmlParseErr(ctxt, XML_ERR_INVALID_HEX_CHARREF,
|
|
"htmlParseCharRef: missing semicolon\n",
|
|
NULL, NULL);
|
|
break;
|
|
}
|
|
NEXT;
|
|
}
|
|
if (CUR == ';')
|
|
NEXT;
|
|
} else if ((CUR == '&') && (NXT(1) == '#')) {
|
|
SKIP(2);
|
|
while (CUR != ';') {
|
|
if ((CUR >= '0') && (CUR <= '9')) {
|
|
if (val < 0x110000)
|
|
val = val * 10 + (CUR - '0');
|
|
} else {
|
|
htmlParseErr(ctxt, XML_ERR_INVALID_DEC_CHARREF,
|
|
"htmlParseCharRef: missing semicolon\n",
|
|
NULL, NULL);
|
|
break;
|
|
}
|
|
NEXT;
|
|
}
|
|
if (CUR == ';')
|
|
NEXT;
|
|
} else {
|
|
htmlParseErr(ctxt, XML_ERR_INVALID_CHARREF,
|
|
"htmlParseCharRef: invalid value\n", NULL, NULL);
|
|
}
|
|
/*
|
|
* Check the value IS_CHAR ...
|
|
*/
|
|
if (IS_CHAR(val)) {
|
|
return(val);
|
|
} else if (val >= 0x110000) {
|
|
htmlParseErr(ctxt, XML_ERR_INVALID_CHAR,
|
|
"htmlParseCharRef: value too large\n", NULL, NULL);
|
|
} else {
|
|
htmlParseErrInt(ctxt, XML_ERR_INVALID_CHAR,
|
|
"htmlParseCharRef: invalid xmlChar value %d\n",
|
|
val);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
|
|
/**
|
|
* htmlParseDocTypeDecl:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* parse a DOCTYPE declaration
|
|
*
|
|
* [28] doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S?
|
|
* ('[' (markupdecl | PEReference | S)* ']' S?)? '>'
|
|
*/
|
|
|
|
static void
|
|
htmlParseDocTypeDecl(htmlParserCtxtPtr ctxt) {
|
|
const 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) {
|
|
htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
|
|
"htmlParseDocTypeDecl : no DOCTYPE name !\n",
|
|
NULL, NULL);
|
|
}
|
|
/*
|
|
* Check that upper(name) == "HTML" !!!!!!!!!!!!!
|
|
*/
|
|
|
|
SKIP_BLANKS;
|
|
|
|
/*
|
|
* Check for SystemID and ExternalID
|
|
*/
|
|
URI = htmlParseExternalID(ctxt, &ExternalID);
|
|
SKIP_BLANKS;
|
|
|
|
/*
|
|
* We should be at the end of the DOCTYPE declaration.
|
|
*/
|
|
if (CUR != '>') {
|
|
htmlParseErr(ctxt, XML_ERR_DOCTYPE_NOT_FINISHED,
|
|
"DOCTYPE improperly terminated\n", NULL, NULL);
|
|
/* Ignore bogus content */
|
|
while ((CUR != 0) && (CUR != '>'))
|
|
NEXT;
|
|
}
|
|
if (CUR == '>')
|
|
NEXT;
|
|
|
|
/*
|
|
* Create or update the document accordingly to the DOCTYPE
|
|
*/
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->internalSubset != NULL) &&
|
|
(!ctxt->disableSAX))
|
|
ctxt->sax->internalSubset(ctxt->userData, name, ExternalID, URI);
|
|
|
|
/*
|
|
* Cleanup, since we don't use all those identifiers
|
|
*/
|
|
if (URI != NULL) xmlFree(URI);
|
|
if (ExternalID != NULL) xmlFree(ExternalID);
|
|
}
|
|
|
|
/**
|
|
* htmlParseAttribute:
|
|
* @ctxt: an HTML parser context
|
|
* @value: a xmlChar ** used to store the value of the attribute
|
|
*
|
|
* parse an attribute
|
|
*
|
|
* [41] Attribute ::= Name Eq AttValue
|
|
*
|
|
* [25] Eq ::= S? '=' S?
|
|
*
|
|
* With namespace:
|
|
*
|
|
* [NS 11] Attribute ::= QName Eq AttValue
|
|
*
|
|
* Also the case QName == xmlns:??? is handled independently as a namespace
|
|
* definition.
|
|
*
|
|
* Returns the attribute name, and the value in *value.
|
|
*/
|
|
|
|
static const xmlChar *
|
|
htmlParseAttribute(htmlParserCtxtPtr ctxt, xmlChar **value) {
|
|
const xmlChar *name;
|
|
xmlChar *val = NULL;
|
|
|
|
*value = NULL;
|
|
name = htmlParseHTMLName(ctxt);
|
|
if (name == NULL) {
|
|
htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
|
|
"error parsing attribute name\n", NULL, NULL);
|
|
return(NULL);
|
|
}
|
|
|
|
/*
|
|
* read the value
|
|
*/
|
|
SKIP_BLANKS;
|
|
if (CUR == '=') {
|
|
NEXT;
|
|
SKIP_BLANKS;
|
|
val = htmlParseAttValue(ctxt);
|
|
}
|
|
|
|
*value = val;
|
|
return(name);
|
|
}
|
|
|
|
/**
|
|
* htmlCheckEncodingDirect:
|
|
* @ctxt: an HTML parser context
|
|
* @attvalue: the attribute value
|
|
*
|
|
* Checks an attribute value to detect
|
|
* the encoding
|
|
* If a new encoding is detected the parser is switched to decode
|
|
* it and pass UTF8
|
|
*/
|
|
static void
|
|
htmlCheckEncodingDirect(htmlParserCtxtPtr ctxt, const xmlChar *encoding) {
|
|
|
|
if ((ctxt == NULL) || (encoding == NULL) ||
|
|
(ctxt->options & HTML_PARSE_IGNORE_ENC))
|
|
return;
|
|
|
|
/* do not change encoding */
|
|
if (ctxt->input->encoding != NULL)
|
|
return;
|
|
|
|
if (encoding != NULL) {
|
|
xmlCharEncoding enc;
|
|
xmlCharEncodingHandlerPtr handler;
|
|
|
|
while ((*encoding == ' ') || (*encoding == '\t')) encoding++;
|
|
|
|
if (ctxt->input->encoding != NULL)
|
|
xmlFree((xmlChar *) ctxt->input->encoding);
|
|
ctxt->input->encoding = xmlStrdup(encoding);
|
|
|
|
enc = xmlParseCharEncoding((const char *) encoding);
|
|
/*
|
|
* registered set of known encodings
|
|
*/
|
|
if (enc != XML_CHAR_ENCODING_ERROR) {
|
|
if (((enc == XML_CHAR_ENCODING_UTF16LE) ||
|
|
(enc == XML_CHAR_ENCODING_UTF16BE) ||
|
|
(enc == XML_CHAR_ENCODING_UCS4LE) ||
|
|
(enc == XML_CHAR_ENCODING_UCS4BE)) &&
|
|
(ctxt->input->buf != NULL) &&
|
|
(ctxt->input->buf->encoder == NULL)) {
|
|
htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
|
|
"htmlCheckEncoding: wrong encoding meta\n",
|
|
NULL, NULL);
|
|
} else {
|
|
xmlSwitchEncoding(ctxt, enc);
|
|
}
|
|
ctxt->charset = XML_CHAR_ENCODING_UTF8;
|
|
} else {
|
|
/*
|
|
* fallback for unknown encodings
|
|
*/
|
|
handler = xmlFindCharEncodingHandler((const char *) encoding);
|
|
if (handler != NULL) {
|
|
xmlSwitchToEncoding(ctxt, handler);
|
|
ctxt->charset = XML_CHAR_ENCODING_UTF8;
|
|
} else {
|
|
htmlParseErr(ctxt, XML_ERR_UNSUPPORTED_ENCODING,
|
|
"htmlCheckEncoding: unknown encoding %s\n",
|
|
encoding, NULL);
|
|
}
|
|
}
|
|
|
|
if ((ctxt->input->buf != NULL) &&
|
|
(ctxt->input->buf->encoder != NULL) &&
|
|
(ctxt->input->buf->raw != NULL) &&
|
|
(ctxt->input->buf->buffer != NULL)) {
|
|
int nbchars;
|
|
int processed;
|
|
|
|
/*
|
|
* convert as much as possible to the parser reading buffer.
|
|
*/
|
|
processed = ctxt->input->cur - ctxt->input->base;
|
|
xmlBufShrink(ctxt->input->buf->buffer, processed);
|
|
nbchars = xmlCharEncInput(ctxt->input->buf, 1);
|
|
xmlBufResetInput(ctxt->input->buf->buffer, ctxt->input);
|
|
if (nbchars < 0) {
|
|
htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
|
|
"htmlCheckEncoding: encoder error\n",
|
|
NULL, NULL);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* htmlCheckEncoding:
|
|
* @ctxt: an HTML parser context
|
|
* @attvalue: the attribute value
|
|
*
|
|
* Checks an http-equiv attribute from a Meta tag to detect
|
|
* the encoding
|
|
* If a new encoding is detected the parser is switched to decode
|
|
* it and pass UTF8
|
|
*/
|
|
static void
|
|
htmlCheckEncoding(htmlParserCtxtPtr ctxt, const xmlChar *attvalue) {
|
|
const xmlChar *encoding;
|
|
|
|
if (!attvalue)
|
|
return;
|
|
|
|
encoding = xmlStrcasestr(attvalue, BAD_CAST"charset");
|
|
if (encoding != NULL) {
|
|
encoding += 7;
|
|
}
|
|
/*
|
|
* skip blank
|
|
*/
|
|
if (encoding && IS_BLANK_CH(*encoding))
|
|
encoding = xmlStrcasestr(attvalue, BAD_CAST"=");
|
|
if (encoding && *encoding == '=') {
|
|
encoding ++;
|
|
htmlCheckEncodingDirect(ctxt, encoding);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* htmlCheckMeta:
|
|
* @ctxt: an HTML parser context
|
|
* @atts: the attributes values
|
|
*
|
|
* Checks an attributes from a Meta tag
|
|
*/
|
|
static void
|
|
htmlCheckMeta(htmlParserCtxtPtr ctxt, const xmlChar **atts) {
|
|
int i;
|
|
const xmlChar *att, *value;
|
|
int http = 0;
|
|
const xmlChar *content = NULL;
|
|
|
|
if ((ctxt == NULL) || (atts == NULL))
|
|
return;
|
|
|
|
i = 0;
|
|
att = atts[i++];
|
|
while (att != NULL) {
|
|
value = atts[i++];
|
|
if ((value != NULL) && (!xmlStrcasecmp(att, BAD_CAST"http-equiv"))
|
|
&& (!xmlStrcasecmp(value, BAD_CAST"Content-Type")))
|
|
http = 1;
|
|
else if ((value != NULL) && (!xmlStrcasecmp(att, BAD_CAST"charset")))
|
|
htmlCheckEncodingDirect(ctxt, value);
|
|
else if ((value != NULL) && (!xmlStrcasecmp(att, BAD_CAST"content")))
|
|
content = value;
|
|
att = atts[i++];
|
|
}
|
|
if ((http) && (content != NULL))
|
|
htmlCheckEncoding(ctxt, content);
|
|
|
|
}
|
|
|
|
/**
|
|
* htmlParseStartTag:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* parse a start of tag either for rule element or
|
|
* EmptyElement. In both case we don't parse the tag closing chars.
|
|
*
|
|
* [40] STag ::= '<' Name (S Attribute)* S? '>'
|
|
*
|
|
* [44] EmptyElemTag ::= '<' Name (S Attribute)* S? '/>'
|
|
*
|
|
* With namespace:
|
|
*
|
|
* [NS 8] STag ::= '<' QName (S Attribute)* S? '>'
|
|
*
|
|
* [NS 10] EmptyElement ::= '<' QName (S Attribute)* S? '/>'
|
|
*
|
|
* Returns 0 in case of success, -1 in case of error and 1 if discarded
|
|
*/
|
|
|
|
static int
|
|
htmlParseStartTag(htmlParserCtxtPtr ctxt) {
|
|
const xmlChar *name;
|
|
const xmlChar *attname;
|
|
xmlChar *attvalue;
|
|
const xmlChar **atts;
|
|
int nbatts = 0;
|
|
int maxatts;
|
|
int meta = 0;
|
|
int i;
|
|
int discardtag = 0;
|
|
|
|
if ((ctxt == NULL) || (ctxt->input == NULL)) {
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"htmlParseStartTag: context error\n", NULL, NULL);
|
|
return -1;
|
|
}
|
|
if (ctxt->instate == XML_PARSER_EOF)
|
|
return(-1);
|
|
if (CUR != '<') return -1;
|
|
NEXT;
|
|
|
|
atts = ctxt->atts;
|
|
maxatts = ctxt->maxatts;
|
|
|
|
GROW;
|
|
name = htmlParseHTMLName(ctxt);
|
|
if (name == NULL) {
|
|
htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
|
|
"htmlParseStartTag: invalid element name\n",
|
|
NULL, NULL);
|
|
/* if recover preserve text on classic misconstructs */
|
|
if ((ctxt->recovery) && ((IS_BLANK_CH(CUR)) || (CUR == '<') ||
|
|
(CUR == '=') || (CUR == '>') || (((CUR >= '0') && (CUR <= '9'))))) {
|
|
htmlParseCharDataInternal(ctxt, '<');
|
|
return(-1);
|
|
}
|
|
|
|
|
|
/* Dump the bogus tag like browsers do */
|
|
while ((CUR != 0) && (CUR != '>') &&
|
|
(ctxt->instate != XML_PARSER_EOF))
|
|
NEXT;
|
|
return -1;
|
|
}
|
|
if (xmlStrEqual(name, BAD_CAST"meta"))
|
|
meta = 1;
|
|
|
|
/*
|
|
* Check for auto-closure of HTML elements.
|
|
*/
|
|
htmlAutoClose(ctxt, name);
|
|
|
|
/*
|
|
* Check for implied HTML elements.
|
|
*/
|
|
htmlCheckImplied(ctxt, name);
|
|
|
|
/*
|
|
* Avoid html at any level > 0, head at any level != 1
|
|
* or any attempt to recurse body
|
|
*/
|
|
if ((ctxt->nameNr > 0) && (xmlStrEqual(name, BAD_CAST"html"))) {
|
|
htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
|
|
"htmlParseStartTag: misplaced <html> tag\n",
|
|
name, NULL);
|
|
discardtag = 1;
|
|
ctxt->depth++;
|
|
}
|
|
if ((ctxt->nameNr != 1) &&
|
|
(xmlStrEqual(name, BAD_CAST"head"))) {
|
|
htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
|
|
"htmlParseStartTag: misplaced <head> tag\n",
|
|
name, NULL);
|
|
discardtag = 1;
|
|
ctxt->depth++;
|
|
}
|
|
if (xmlStrEqual(name, BAD_CAST"body")) {
|
|
int indx;
|
|
for (indx = 0;indx < ctxt->nameNr;indx++) {
|
|
if (xmlStrEqual(ctxt->nameTab[indx], BAD_CAST"body")) {
|
|
htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
|
|
"htmlParseStartTag: misplaced <body> tag\n",
|
|
name, NULL);
|
|
discardtag = 1;
|
|
ctxt->depth++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Now parse the attributes, it ends up with the ending
|
|
*
|
|
* (S Attribute)* S?
|
|
*/
|
|
SKIP_BLANKS;
|
|
while ((CUR != 0) &&
|
|
(CUR != '>') &&
|
|
((CUR != '/') || (NXT(1) != '>'))) {
|
|
GROW;
|
|
attname = htmlParseAttribute(ctxt, &attvalue);
|
|
if (attname != NULL) {
|
|
|
|
/*
|
|
* Well formedness requires at most one declaration of an attribute
|
|
*/
|
|
for (i = 0; i < nbatts;i += 2) {
|
|
if (xmlStrEqual(atts[i], attname)) {
|
|
htmlParseErr(ctxt, XML_ERR_ATTRIBUTE_REDEFINED,
|
|
"Attribute %s redefined\n", attname, NULL);
|
|
if (attvalue != NULL)
|
|
xmlFree(attvalue);
|
|
goto failed;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Add the pair to atts
|
|
*/
|
|
if (atts == NULL) {
|
|
maxatts = 22; /* allow for 10 attrs by default */
|
|
atts = (const xmlChar **)
|
|
xmlMalloc(maxatts * sizeof(xmlChar *));
|
|
if (atts == NULL) {
|
|
htmlErrMemory(ctxt, NULL);
|
|
if (attvalue != NULL)
|
|
xmlFree(attvalue);
|
|
goto failed;
|
|
}
|
|
ctxt->atts = atts;
|
|
ctxt->maxatts = maxatts;
|
|
} else if (nbatts + 4 > maxatts) {
|
|
const xmlChar **n;
|
|
|
|
maxatts *= 2;
|
|
n = (const xmlChar **) xmlRealloc((void *) atts,
|
|
maxatts * sizeof(const xmlChar *));
|
|
if (n == NULL) {
|
|
htmlErrMemory(ctxt, NULL);
|
|
if (attvalue != NULL)
|
|
xmlFree(attvalue);
|
|
goto failed;
|
|
}
|
|
atts = n;
|
|
ctxt->atts = atts;
|
|
ctxt->maxatts = maxatts;
|
|
}
|
|
atts[nbatts++] = attname;
|
|
atts[nbatts++] = attvalue;
|
|
atts[nbatts] = NULL;
|
|
atts[nbatts + 1] = NULL;
|
|
}
|
|
else {
|
|
if (attvalue != NULL)
|
|
xmlFree(attvalue);
|
|
/* Dump the bogus attribute string up to the next blank or
|
|
* the end of the tag. */
|
|
while ((CUR != 0) &&
|
|
!(IS_BLANK_CH(CUR)) && (CUR != '>') &&
|
|
((CUR != '/') || (NXT(1) != '>')))
|
|
NEXT;
|
|
}
|
|
|
|
failed:
|
|
SKIP_BLANKS;
|
|
}
|
|
|
|
/*
|
|
* Handle specific association to the META tag
|
|
*/
|
|
if (meta && (nbatts != 0))
|
|
htmlCheckMeta(ctxt, atts);
|
|
|
|
/*
|
|
* SAX: Start of Element !
|
|
*/
|
|
if (!discardtag) {
|
|
htmlnamePush(ctxt, name);
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->startElement != NULL)) {
|
|
if (nbatts != 0)
|
|
ctxt->sax->startElement(ctxt->userData, name, atts);
|
|
else
|
|
ctxt->sax->startElement(ctxt->userData, name, NULL);
|
|
}
|
|
}
|
|
|
|
if (atts != NULL) {
|
|
for (i = 1;i < nbatts;i += 2) {
|
|
if (atts[i] != NULL)
|
|
xmlFree((xmlChar *) atts[i]);
|
|
}
|
|
}
|
|
|
|
return(discardtag);
|
|
}
|
|
|
|
/**
|
|
* htmlParseEndTag:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* parse an end of tag
|
|
*
|
|
* [42] ETag ::= '</' Name S? '>'
|
|
*
|
|
* With namespace
|
|
*
|
|
* [NS 9] ETag ::= '</' QName S? '>'
|
|
*
|
|
* Returns 1 if the current level should be closed.
|
|
*/
|
|
|
|
static int
|
|
htmlParseEndTag(htmlParserCtxtPtr ctxt)
|
|
{
|
|
const xmlChar *name;
|
|
const xmlChar *oldname;
|
|
int i, ret;
|
|
|
|
if ((CUR != '<') || (NXT(1) != '/')) {
|
|
htmlParseErr(ctxt, XML_ERR_LTSLASH_REQUIRED,
|
|
"htmlParseEndTag: '</' not found\n", NULL, NULL);
|
|
return (0);
|
|
}
|
|
SKIP(2);
|
|
|
|
name = htmlParseHTMLName(ctxt);
|
|
if (name == NULL)
|
|
return (0);
|
|
/*
|
|
* We should definitely be at the ending "S? '>'" part
|
|
*/
|
|
SKIP_BLANKS;
|
|
if (CUR != '>') {
|
|
htmlParseErr(ctxt, XML_ERR_GT_REQUIRED,
|
|
"End tag : expected '>'\n", NULL, NULL);
|
|
/* Skip to next '>' */
|
|
while ((CUR != 0) && (CUR != '>'))
|
|
NEXT;
|
|
}
|
|
if (CUR == '>')
|
|
NEXT;
|
|
|
|
/*
|
|
* if we ignored misplaced tags in htmlParseStartTag don't pop them
|
|
* out now.
|
|
*/
|
|
if ((ctxt->depth > 0) &&
|
|
(xmlStrEqual(name, BAD_CAST "html") ||
|
|
xmlStrEqual(name, BAD_CAST "body") ||
|
|
xmlStrEqual(name, BAD_CAST "head"))) {
|
|
ctxt->depth--;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* If the name read is not one of the element in the parsing stack
|
|
* then return, it's just an error.
|
|
*/
|
|
for (i = (ctxt->nameNr - 1); i >= 0; i--) {
|
|
if (xmlStrEqual(name, ctxt->nameTab[i]))
|
|
break;
|
|
}
|
|
if (i < 0) {
|
|
htmlParseErr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
|
|
"Unexpected end tag : %s\n", name, NULL);
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Check for auto-closure of HTML elements.
|
|
*/
|
|
|
|
htmlAutoCloseOnClose(ctxt, name);
|
|
|
|
/*
|
|
* Well formedness constraints, opening and closing must match.
|
|
* With the exception that the autoclose may have popped stuff out
|
|
* of the stack.
|
|
*/
|
|
if ((ctxt->name != NULL) && (!xmlStrEqual(ctxt->name, name))) {
|
|
htmlParseErr(ctxt, XML_ERR_TAG_NAME_MISMATCH,
|
|
"Opening and ending tag mismatch: %s and %s\n",
|
|
name, ctxt->name);
|
|
}
|
|
|
|
/*
|
|
* SAX: End of Tag
|
|
*/
|
|
oldname = ctxt->name;
|
|
if ((oldname != NULL) && (xmlStrEqual(oldname, name))) {
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
|
|
ctxt->sax->endElement(ctxt->userData, name);
|
|
htmlNodeInfoPop(ctxt);
|
|
htmlnamePop(ctxt);
|
|
ret = 1;
|
|
} else {
|
|
ret = 0;
|
|
}
|
|
|
|
return (ret);
|
|
}
|
|
|
|
|
|
/**
|
|
* htmlParseReference:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* parse and handle entity references in content,
|
|
* this will end-up in a call to character() since this is either a
|
|
* CharRef, or a predefined entity.
|
|
*/
|
|
static void
|
|
htmlParseReference(htmlParserCtxtPtr ctxt) {
|
|
const htmlEntityDesc * ent;
|
|
xmlChar out[6];
|
|
const xmlChar *name;
|
|
if (CUR != '&') return;
|
|
|
|
if (NXT(1) == '#') {
|
|
unsigned int c;
|
|
int bits, i = 0;
|
|
|
|
c = htmlParseCharRef(ctxt);
|
|
if (c == 0)
|
|
return;
|
|
|
|
if (c < 0x80) { out[i++]= c; bits= -6; }
|
|
else if (c < 0x800) { out[i++]=((c >> 6) & 0x1F) | 0xC0; bits= 0; }
|
|
else if (c < 0x10000) { out[i++]=((c >> 12) & 0x0F) | 0xE0; bits= 6; }
|
|
else { out[i++]=((c >> 18) & 0x07) | 0xF0; bits= 12; }
|
|
|
|
for ( ; bits >= 0; bits-= 6) {
|
|
out[i++]= ((c >> bits) & 0x3F) | 0x80;
|
|
}
|
|
out[i] = 0;
|
|
|
|
htmlCheckParagraph(ctxt);
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
|
|
ctxt->sax->characters(ctxt->userData, out, i);
|
|
} else {
|
|
ent = htmlParseEntityRef(ctxt, &name);
|
|
if (name == NULL) {
|
|
htmlCheckParagraph(ctxt);
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
|
|
ctxt->sax->characters(ctxt->userData, BAD_CAST "&", 1);
|
|
return;
|
|
}
|
|
if ((ent == NULL) || !(ent->value > 0)) {
|
|
htmlCheckParagraph(ctxt);
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL)) {
|
|
ctxt->sax->characters(ctxt->userData, BAD_CAST "&", 1);
|
|
ctxt->sax->characters(ctxt->userData, name, xmlStrlen(name));
|
|
/* ctxt->sax->characters(ctxt->userData, BAD_CAST ";", 1); */
|
|
}
|
|
} else {
|
|
unsigned int c;
|
|
int bits, i = 0;
|
|
|
|
c = ent->value;
|
|
if (c < 0x80)
|
|
{ out[i++]= c; bits= -6; }
|
|
else if (c < 0x800)
|
|
{ out[i++]=((c >> 6) & 0x1F) | 0xC0; bits= 0; }
|
|
else if (c < 0x10000)
|
|
{ out[i++]=((c >> 12) & 0x0F) | 0xE0; bits= 6; }
|
|
else
|
|
{ out[i++]=((c >> 18) & 0x07) | 0xF0; bits= 12; }
|
|
|
|
for ( ; bits >= 0; bits-= 6) {
|
|
out[i++]= ((c >> bits) & 0x3F) | 0x80;
|
|
}
|
|
out[i] = 0;
|
|
|
|
htmlCheckParagraph(ctxt);
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
|
|
ctxt->sax->characters(ctxt->userData, out, i);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* htmlParseContent:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* Parse a content: comment, sub-element, reference or text.
|
|
* Kept for compatibility with old code
|
|
*/
|
|
|
|
static void
|
|
htmlParseContent(htmlParserCtxtPtr ctxt) {
|
|
xmlChar *currentNode;
|
|
int depth;
|
|
const xmlChar *name;
|
|
|
|
currentNode = xmlStrdup(ctxt->name);
|
|
depth = ctxt->nameNr;
|
|
while (1) {
|
|
GROW;
|
|
|
|
if (ctxt->instate == XML_PARSER_EOF)
|
|
break;
|
|
|
|
/*
|
|
* Our tag or one of it's parent or children is ending.
|
|
*/
|
|
if ((CUR == '<') && (NXT(1) == '/')) {
|
|
if (htmlParseEndTag(ctxt) &&
|
|
((currentNode != NULL) || (ctxt->nameNr == 0))) {
|
|
if (currentNode != NULL)
|
|
xmlFree(currentNode);
|
|
return;
|
|
}
|
|
continue; /* while */
|
|
}
|
|
|
|
else if ((CUR == '<') &&
|
|
((IS_ASCII_LETTER(NXT(1))) ||
|
|
(NXT(1) == '_') || (NXT(1) == ':'))) {
|
|
name = htmlParseHTMLName_nonInvasive(ctxt);
|
|
if (name == NULL) {
|
|
htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
|
|
"htmlParseStartTag: invalid element name\n",
|
|
NULL, NULL);
|
|
/* Dump the bogus tag like browsers do */
|
|
while ((CUR != 0) && (CUR != '>'))
|
|
NEXT;
|
|
|
|
if (currentNode != NULL)
|
|
xmlFree(currentNode);
|
|
return;
|
|
}
|
|
|
|
if (ctxt->name != NULL) {
|
|
if (htmlCheckAutoClose(name, ctxt->name) == 1) {
|
|
htmlAutoClose(ctxt, name);
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Has this node been popped out during parsing of
|
|
* the next element
|
|
*/
|
|
if ((ctxt->nameNr > 0) && (depth >= ctxt->nameNr) &&
|
|
(!xmlStrEqual(currentNode, ctxt->name)))
|
|
{
|
|
if (currentNode != NULL) xmlFree(currentNode);
|
|
return;
|
|
}
|
|
|
|
if ((CUR != 0) && ((xmlStrEqual(currentNode, BAD_CAST"script")) ||
|
|
(xmlStrEqual(currentNode, BAD_CAST"style")))) {
|
|
/*
|
|
* Handle SCRIPT/STYLE separately
|
|
*/
|
|
htmlParseScript(ctxt);
|
|
} else {
|
|
/*
|
|
* Sometimes DOCTYPE arrives in the middle of the document
|
|
*/
|
|
if ((CUR == '<') && (NXT(1) == '!') &&
|
|
(UPP(2) == 'D') && (UPP(3) == 'O') &&
|
|
(UPP(4) == 'C') && (UPP(5) == 'T') &&
|
|
(UPP(6) == 'Y') && (UPP(7) == 'P') &&
|
|
(UPP(8) == 'E')) {
|
|
htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
|
|
"Misplaced DOCTYPE declaration\n",
|
|
BAD_CAST "DOCTYPE" , NULL);
|
|
htmlParseDocTypeDecl(ctxt);
|
|
}
|
|
|
|
/*
|
|
* First case : a comment
|
|
*/
|
|
if ((CUR == '<') && (NXT(1) == '!') &&
|
|
(NXT(2) == '-') && (NXT(3) == '-')) {
|
|
htmlParseComment(ctxt);
|
|
}
|
|
|
|
/*
|
|
* Second case : a Processing Instruction.
|
|
*/
|
|
else if ((CUR == '<') && (NXT(1) == '?')) {
|
|
htmlParsePI(ctxt);
|
|
}
|
|
|
|
/*
|
|
* Third case : a sub-element.
|
|
*/
|
|
else if (CUR == '<') {
|
|
htmlParseElement(ctxt);
|
|
}
|
|
|
|
/*
|
|
* Fourth case : a reference. If if has not been resolved,
|
|
* parsing returns it's Name, create the node
|
|
*/
|
|
else if (CUR == '&') {
|
|
htmlParseReference(ctxt);
|
|
}
|
|
|
|
/*
|
|
* Fifth case : end of the resource
|
|
*/
|
|
else if (CUR == 0) {
|
|
htmlAutoCloseOnEnd(ctxt);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Last case, text. Note that References are handled directly.
|
|
*/
|
|
else {
|
|
htmlParseCharData(ctxt);
|
|
}
|
|
}
|
|
GROW;
|
|
}
|
|
if (currentNode != NULL) xmlFree(currentNode);
|
|
}
|
|
|
|
/**
|
|
* htmlParseElement:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* parse an HTML element, this is highly recursive
|
|
* this is kept for compatibility with previous code versions
|
|
*
|
|
* [39] element ::= EmptyElemTag | STag content ETag
|
|
*
|
|
* [41] Attribute ::= Name Eq AttValue
|
|
*/
|
|
|
|
void
|
|
htmlParseElement(htmlParserCtxtPtr ctxt) {
|
|
const xmlChar *name;
|
|
xmlChar *currentNode = NULL;
|
|
const htmlElemDesc * info;
|
|
htmlParserNodeInfo node_info;
|
|
int failed;
|
|
int depth;
|
|
const xmlChar *oldptr;
|
|
|
|
if ((ctxt == NULL) || (ctxt->input == NULL)) {
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"htmlParseElement: context error\n", NULL, NULL);
|
|
return;
|
|
}
|
|
|
|
if (ctxt->instate == XML_PARSER_EOF)
|
|
return;
|
|
|
|
/* Capture start position */
|
|
if (ctxt->record_info) {
|
|
node_info.begin_pos = ctxt->input->consumed +
|
|
(CUR_PTR - ctxt->input->base);
|
|
node_info.begin_line = ctxt->input->line;
|
|
}
|
|
|
|
failed = htmlParseStartTag(ctxt);
|
|
name = ctxt->name;
|
|
if ((failed == -1) || (name == NULL)) {
|
|
if (CUR == '>')
|
|
NEXT;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Lookup the info for that element.
|
|
*/
|
|
info = htmlTagLookup(name);
|
|
if (info == NULL) {
|
|
htmlParseErr(ctxt, XML_HTML_UNKNOWN_TAG,
|
|
"Tag %s invalid\n", name, NULL);
|
|
}
|
|
|
|
/*
|
|
* Check for an Empty Element labeled the XML/SGML way
|
|
*/
|
|
if ((CUR == '/') && (NXT(1) == '>')) {
|
|
SKIP(2);
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
|
|
ctxt->sax->endElement(ctxt->userData, name);
|
|
htmlnamePop(ctxt);
|
|
return;
|
|
}
|
|
|
|
if (CUR == '>') {
|
|
NEXT;
|
|
} else {
|
|
htmlParseErr(ctxt, XML_ERR_GT_REQUIRED,
|
|
"Couldn't find end of Start Tag %s\n", name, NULL);
|
|
|
|
/*
|
|
* end of parsing of this node.
|
|
*/
|
|
if (xmlStrEqual(name, ctxt->name)) {
|
|
nodePop(ctxt);
|
|
htmlnamePop(ctxt);
|
|
}
|
|
|
|
/*
|
|
* Capture end position and add node
|
|
*/
|
|
if (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);
|
|
htmlnamePop(ctxt);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Parse the content of the element:
|
|
*/
|
|
currentNode = xmlStrdup(ctxt->name);
|
|
depth = ctxt->nameNr;
|
|
while (CUR != 0) {
|
|
oldptr = ctxt->input->cur;
|
|
htmlParseContent(ctxt);
|
|
if (oldptr==ctxt->input->cur) break;
|
|
if (ctxt->nameNr < depth) break;
|
|
}
|
|
|
|
/*
|
|
* Capture end position and add node
|
|
*/
|
|
if ( currentNode != NULL && ctxt->record_info ) {
|
|
node_info.end_pos = ctxt->input->consumed +
|
|
(CUR_PTR - ctxt->input->base);
|
|
node_info.end_line = ctxt->input->line;
|
|
node_info.node = ctxt->node;
|
|
xmlParserAddNodeInfo(ctxt, &node_info);
|
|
}
|
|
if (CUR == 0) {
|
|
htmlAutoCloseOnEnd(ctxt);
|
|
}
|
|
|
|
if (currentNode != NULL)
|
|
xmlFree(currentNode);
|
|
}
|
|
|
|
static void
|
|
htmlParserFinishElementParsing(htmlParserCtxtPtr ctxt) {
|
|
/*
|
|
* Capture end position and add node
|
|
*/
|
|
if ( ctxt->node != NULL && ctxt->record_info ) {
|
|
ctxt->nodeInfo->end_pos = ctxt->input->consumed +
|
|
(CUR_PTR - ctxt->input->base);
|
|
ctxt->nodeInfo->end_line = ctxt->input->line;
|
|
ctxt->nodeInfo->node = ctxt->node;
|
|
xmlParserAddNodeInfo(ctxt, ctxt->nodeInfo);
|
|
htmlNodeInfoPop(ctxt);
|
|
}
|
|
if (CUR == 0) {
|
|
htmlAutoCloseOnEnd(ctxt);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* htmlParseElementInternal:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* parse an HTML element, new version, non recursive
|
|
*
|
|
* [39] element ::= EmptyElemTag | STag content ETag
|
|
*
|
|
* [41] Attribute ::= Name Eq AttValue
|
|
*/
|
|
|
|
static void
|
|
htmlParseElementInternal(htmlParserCtxtPtr ctxt) {
|
|
const xmlChar *name;
|
|
const htmlElemDesc * info;
|
|
htmlParserNodeInfo node_info = { NULL, 0, 0, 0, 0 };
|
|
int failed;
|
|
|
|
if ((ctxt == NULL) || (ctxt->input == NULL)) {
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"htmlParseElementInternal: context error\n", NULL, NULL);
|
|
return;
|
|
}
|
|
|
|
if (ctxt->instate == XML_PARSER_EOF)
|
|
return;
|
|
|
|
/* Capture start position */
|
|
if (ctxt->record_info) {
|
|
node_info.begin_pos = ctxt->input->consumed +
|
|
(CUR_PTR - ctxt->input->base);
|
|
node_info.begin_line = ctxt->input->line;
|
|
}
|
|
|
|
failed = htmlParseStartTag(ctxt);
|
|
name = ctxt->name;
|
|
if ((failed == -1) || (name == NULL)) {
|
|
if (CUR == '>')
|
|
NEXT;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Lookup the info for that element.
|
|
*/
|
|
info = htmlTagLookup(name);
|
|
if (info == NULL) {
|
|
htmlParseErr(ctxt, XML_HTML_UNKNOWN_TAG,
|
|
"Tag %s invalid\n", name, NULL);
|
|
}
|
|
|
|
/*
|
|
* Check for an Empty Element labeled the XML/SGML way
|
|
*/
|
|
if ((CUR == '/') && (NXT(1) == '>')) {
|
|
SKIP(2);
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
|
|
ctxt->sax->endElement(ctxt->userData, name);
|
|
htmlnamePop(ctxt);
|
|
return;
|
|
}
|
|
|
|
if (CUR == '>') {
|
|
NEXT;
|
|
} else {
|
|
htmlParseErr(ctxt, XML_ERR_GT_REQUIRED,
|
|
"Couldn't find end of Start Tag %s\n", name, NULL);
|
|
|
|
/*
|
|
* end of parsing of this node.
|
|
*/
|
|
if (xmlStrEqual(name, ctxt->name)) {
|
|
nodePop(ctxt);
|
|
htmlnamePop(ctxt);
|
|
}
|
|
|
|
if (ctxt->record_info)
|
|
htmlNodeInfoPush(ctxt, &node_info);
|
|
htmlParserFinishElementParsing(ctxt);
|
|
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);
|
|
htmlnamePop(ctxt);
|
|
return;
|
|
}
|
|
|
|
if (ctxt->record_info)
|
|
htmlNodeInfoPush(ctxt, &node_info);
|
|
}
|
|
|
|
/**
|
|
* htmlParseContentInternal:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* Parse a content: comment, sub-element, reference or text.
|
|
* New version for non recursive htmlParseElementInternal
|
|
*/
|
|
|
|
static void
|
|
htmlParseContentInternal(htmlParserCtxtPtr ctxt) {
|
|
xmlChar *currentNode;
|
|
int depth;
|
|
const xmlChar *name;
|
|
|
|
currentNode = xmlStrdup(ctxt->name);
|
|
depth = ctxt->nameNr;
|
|
while (1) {
|
|
GROW;
|
|
|
|
if (ctxt->instate == XML_PARSER_EOF)
|
|
break;
|
|
|
|
/*
|
|
* Our tag or one of it's parent or children is ending.
|
|
*/
|
|
if ((CUR == '<') && (NXT(1) == '/')) {
|
|
if (htmlParseEndTag(ctxt) &&
|
|
((currentNode != NULL) || (ctxt->nameNr == 0))) {
|
|
if (currentNode != NULL)
|
|
xmlFree(currentNode);
|
|
|
|
currentNode = xmlStrdup(ctxt->name);
|
|
depth = ctxt->nameNr;
|
|
}
|
|
continue; /* while */
|
|
}
|
|
|
|
else if ((CUR == '<') &&
|
|
((IS_ASCII_LETTER(NXT(1))) ||
|
|
(NXT(1) == '_') || (NXT(1) == ':'))) {
|
|
name = htmlParseHTMLName_nonInvasive(ctxt);
|
|
if (name == NULL) {
|
|
htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
|
|
"htmlParseStartTag: invalid element name\n",
|
|
NULL, NULL);
|
|
/* Dump the bogus tag like browsers do */
|
|
while ((CUR == 0) && (CUR != '>'))
|
|
NEXT;
|
|
|
|
htmlParserFinishElementParsing(ctxt);
|
|
if (currentNode != NULL)
|
|
xmlFree(currentNode);
|
|
|
|
currentNode = xmlStrdup(ctxt->name);
|
|
depth = ctxt->nameNr;
|
|
continue;
|
|
}
|
|
|
|
if (ctxt->name != NULL) {
|
|
if (htmlCheckAutoClose(name, ctxt->name) == 1) {
|
|
htmlAutoClose(ctxt, name);
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Has this node been popped out during parsing of
|
|
* the next element
|
|
*/
|
|
if ((ctxt->nameNr > 0) && (depth >= ctxt->nameNr) &&
|
|
(!xmlStrEqual(currentNode, ctxt->name)))
|
|
{
|
|
htmlParserFinishElementParsing(ctxt);
|
|
if (currentNode != NULL) xmlFree(currentNode);
|
|
|
|
currentNode = xmlStrdup(ctxt->name);
|
|
depth = ctxt->nameNr;
|
|
continue;
|
|
}
|
|
|
|
if ((CUR != 0) && ((xmlStrEqual(currentNode, BAD_CAST"script")) ||
|
|
(xmlStrEqual(currentNode, BAD_CAST"style")))) {
|
|
/*
|
|
* Handle SCRIPT/STYLE separately
|
|
*/
|
|
htmlParseScript(ctxt);
|
|
} else {
|
|
/*
|
|
* Sometimes DOCTYPE arrives in the middle of the document
|
|
*/
|
|
if ((CUR == '<') && (NXT(1) == '!') &&
|
|
(UPP(2) == 'D') && (UPP(3) == 'O') &&
|
|
(UPP(4) == 'C') && (UPP(5) == 'T') &&
|
|
(UPP(6) == 'Y') && (UPP(7) == 'P') &&
|
|
(UPP(8) == 'E')) {
|
|
htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
|
|
"Misplaced DOCTYPE declaration\n",
|
|
BAD_CAST "DOCTYPE" , NULL);
|
|
htmlParseDocTypeDecl(ctxt);
|
|
}
|
|
|
|
/*
|
|
* First case : a comment
|
|
*/
|
|
if ((CUR == '<') && (NXT(1) == '!') &&
|
|
(NXT(2) == '-') && (NXT(3) == '-')) {
|
|
htmlParseComment(ctxt);
|
|
}
|
|
|
|
/*
|
|
* Second case : a Processing Instruction.
|
|
*/
|
|
else if ((CUR == '<') && (NXT(1) == '?')) {
|
|
htmlParsePI(ctxt);
|
|
}
|
|
|
|
/*
|
|
* Third case : a sub-element.
|
|
*/
|
|
else if (CUR == '<') {
|
|
htmlParseElementInternal(ctxt);
|
|
if (currentNode != NULL) xmlFree(currentNode);
|
|
|
|
currentNode = xmlStrdup(ctxt->name);
|
|
depth = ctxt->nameNr;
|
|
}
|
|
|
|
/*
|
|
* Fourth case : a reference. If if has not been resolved,
|
|
* parsing returns it's Name, create the node
|
|
*/
|
|
else if (CUR == '&') {
|
|
htmlParseReference(ctxt);
|
|
}
|
|
|
|
/*
|
|
* Fifth case : end of the resource
|
|
*/
|
|
else if (CUR == 0) {
|
|
htmlAutoCloseOnEnd(ctxt);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Last case, text. Note that References are handled directly.
|
|
*/
|
|
else {
|
|
htmlParseCharData(ctxt);
|
|
}
|
|
}
|
|
GROW;
|
|
}
|
|
if (currentNode != NULL) xmlFree(currentNode);
|
|
}
|
|
|
|
/**
|
|
* htmlParseContent:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* Parse a content: comment, sub-element, reference or text.
|
|
* This is the entry point when called from parser.c
|
|
*/
|
|
|
|
void
|
|
__htmlParseContent(void *ctxt) {
|
|
if (ctxt != NULL)
|
|
htmlParseContentInternal((htmlParserCtxtPtr) ctxt);
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
xmlChar start[4];
|
|
xmlCharEncoding enc;
|
|
xmlDtdPtr dtd;
|
|
|
|
xmlInitParser();
|
|
|
|
htmlDefaultSAXHandlerInit();
|
|
|
|
if ((ctxt == NULL) || (ctxt->input == NULL)) {
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"htmlParseDocument: context error\n", NULL, NULL);
|
|
return(XML_ERR_INTERNAL_ERROR);
|
|
}
|
|
ctxt->html = 1;
|
|
ctxt->linenumbers = 1;
|
|
GROW;
|
|
/*
|
|
* SAX: beginning of the document processing.
|
|
*/
|
|
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
|
|
ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator);
|
|
|
|
if ((ctxt->encoding == (const xmlChar *)XML_CHAR_ENCODING_NONE) &&
|
|
((ctxt->input->end - ctxt->input->cur) >= 4)) {
|
|
/*
|
|
* Get the 4 first bytes and decode the charset
|
|
* if enc != XML_CHAR_ENCODING_NONE
|
|
* plug some encoding conversion routines.
|
|
*/
|
|
start[0] = RAW;
|
|
start[1] = NXT(1);
|
|
start[2] = NXT(2);
|
|
start[3] = NXT(3);
|
|
enc = xmlDetectCharEncoding(&start[0], 4);
|
|
if (enc != XML_CHAR_ENCODING_NONE) {
|
|
xmlSwitchEncoding(ctxt, enc);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Wipe out everything which is before the first '<'
|
|
*/
|
|
SKIP_BLANKS;
|
|
if (CUR == 0) {
|
|
htmlParseErr(ctxt, XML_ERR_DOCUMENT_EMPTY,
|
|
"Document is empty\n", NULL, NULL);
|
|
}
|
|
|
|
if ((ctxt->sax) && (ctxt->sax->startDocument) && (!ctxt->disableSAX))
|
|
ctxt->sax->startDocument(ctxt->userData);
|
|
|
|
|
|
/*
|
|
* Parse possible comments and PIs before any content
|
|
*/
|
|
while (((CUR == '<') && (NXT(1) == '!') &&
|
|
(NXT(2) == '-') && (NXT(3) == '-')) ||
|
|
((CUR == '<') && (NXT(1) == '?'))) {
|
|
htmlParseComment(ctxt);
|
|
htmlParsePI(ctxt);
|
|
SKIP_BLANKS;
|
|
}
|
|
|
|
|
|
/*
|
|
* Then possibly doc type declaration(s) and more Misc
|
|
* (doctypedecl Misc*)?
|
|
*/
|
|
if ((CUR == '<') && (NXT(1) == '!') &&
|
|
(UPP(2) == 'D') && (UPP(3) == 'O') &&
|
|
(UPP(4) == 'C') && (UPP(5) == 'T') &&
|
|
(UPP(6) == 'Y') && (UPP(7) == 'P') &&
|
|
(UPP(8) == 'E')) {
|
|
htmlParseDocTypeDecl(ctxt);
|
|
}
|
|
SKIP_BLANKS;
|
|
|
|
/*
|
|
* Parse possible comments and PIs before any content
|
|
*/
|
|
while (((CUR == '<') && (NXT(1) == '!') &&
|
|
(NXT(2) == '-') && (NXT(3) == '-')) ||
|
|
((CUR == '<') && (NXT(1) == '?'))) {
|
|
htmlParseComment(ctxt);
|
|
htmlParsePI(ctxt);
|
|
SKIP_BLANKS;
|
|
}
|
|
|
|
/*
|
|
* Time to start parsing the tree itself
|
|
*/
|
|
htmlParseContentInternal(ctxt);
|
|
|
|
/*
|
|
* autoclose
|
|
*/
|
|
if (CUR == 0)
|
|
htmlAutoCloseOnEnd(ctxt);
|
|
|
|
|
|
/*
|
|
* SAX: end of the document processing.
|
|
*/
|
|
if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
|
|
ctxt->sax->endDocument(ctxt->userData);
|
|
|
|
if ((!(ctxt->options & HTML_PARSE_NODEFDTD)) && (ctxt->myDoc != NULL)) {
|
|
dtd = xmlGetIntSubset(ctxt->myDoc);
|
|
if (dtd == NULL)
|
|
ctxt->myDoc->intSubset =
|
|
xmlCreateIntSubset(ctxt->myDoc, BAD_CAST "html",
|
|
BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN",
|
|
BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd");
|
|
}
|
|
if (! ctxt->wellFormed) return(-1);
|
|
return(0);
|
|
}
|
|
|
|
|
|
/************************************************************************
|
|
* *
|
|
* Parser contexts handling *
|
|
* *
|
|
************************************************************************/
|
|
|
|
/**
|
|
* htmlInitParserCtxt:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* Initialize a parser context
|
|
*
|
|
* Returns 0 in case of success and -1 in case of error
|
|
*/
|
|
|
|
static int
|
|
htmlInitParserCtxt(htmlParserCtxtPtr ctxt)
|
|
{
|
|
htmlSAXHandler *sax;
|
|
|
|
if (ctxt == NULL) return(-1);
|
|
memset(ctxt, 0, sizeof(htmlParserCtxt));
|
|
|
|
ctxt->dict = xmlDictCreate();
|
|
if (ctxt->dict == NULL) {
|
|
htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
|
|
return(-1);
|
|
}
|
|
sax = (htmlSAXHandler *) xmlMalloc(sizeof(htmlSAXHandler));
|
|
if (sax == NULL) {
|
|
htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
|
|
return(-1);
|
|
}
|
|
else
|
|
memset(sax, 0, sizeof(htmlSAXHandler));
|
|
|
|
/* Allocate the Input stack */
|
|
ctxt->inputTab = (htmlParserInputPtr *)
|
|
xmlMalloc(5 * sizeof(htmlParserInputPtr));
|
|
if (ctxt->inputTab == NULL) {
|
|
htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
|
|
ctxt->inputNr = 0;
|
|
ctxt->inputMax = 0;
|
|
ctxt->input = NULL;
|
|
return(-1);
|
|
}
|
|
ctxt->inputNr = 0;
|
|
ctxt->inputMax = 5;
|
|
ctxt->input = NULL;
|
|
ctxt->version = NULL;
|
|
ctxt->encoding = NULL;
|
|
ctxt->standalone = -1;
|
|
ctxt->instate = XML_PARSER_START;
|
|
|
|
/* Allocate the Node stack */
|
|
ctxt->nodeTab = (htmlNodePtr *) xmlMalloc(10 * sizeof(htmlNodePtr));
|
|
if (ctxt->nodeTab == NULL) {
|
|
htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
|
|
ctxt->nodeNr = 0;
|
|
ctxt->nodeMax = 0;
|
|
ctxt->node = NULL;
|
|
ctxt->inputNr = 0;
|
|
ctxt->inputMax = 0;
|
|
ctxt->input = NULL;
|
|
return(-1);
|
|
}
|
|
ctxt->nodeNr = 0;
|
|
ctxt->nodeMax = 10;
|
|
ctxt->node = NULL;
|
|
|
|
/* Allocate the Name stack */
|
|
ctxt->nameTab = (const xmlChar **) xmlMalloc(10 * sizeof(xmlChar *));
|
|
if (ctxt->nameTab == NULL) {
|
|
htmlErrMemory(NULL, "htmlInitParserCtxt: out of memory\n");
|
|
ctxt->nameNr = 0;
|
|
ctxt->nameMax = 0;
|
|
ctxt->name = NULL;
|
|
ctxt->nodeNr = 0;
|
|
ctxt->nodeMax = 0;
|
|
ctxt->node = NULL;
|
|
ctxt->inputNr = 0;
|
|
ctxt->inputMax = 0;
|
|
ctxt->input = NULL;
|
|
return(-1);
|
|
}
|
|
ctxt->nameNr = 0;
|
|
ctxt->nameMax = 10;
|
|
ctxt->name = NULL;
|
|
|
|
ctxt->nodeInfoTab = NULL;
|
|
ctxt->nodeInfoNr = 0;
|
|
ctxt->nodeInfoMax = 0;
|
|
|
|
if (sax == NULL) ctxt->sax = (xmlSAXHandlerPtr) &htmlDefaultSAXHandler;
|
|
else {
|
|
ctxt->sax = sax;
|
|
memcpy(sax, &htmlDefaultSAXHandler, sizeof(xmlSAXHandlerV1));
|
|
}
|
|
ctxt->userData = ctxt;
|
|
ctxt->myDoc = NULL;
|
|
ctxt->wellFormed = 1;
|
|
ctxt->replaceEntities = 0;
|
|
ctxt->linenumbers = xmlLineNumbersDefaultValue;
|
|
ctxt->keepBlanks = xmlKeepBlanksDefaultValue;
|
|
ctxt->html = 1;
|
|
ctxt->vctxt.finishDtd = XML_CTXT_FINISH_DTD_0;
|
|
ctxt->vctxt.userData = ctxt;
|
|
ctxt->vctxt.error = xmlParserValidityError;
|
|
ctxt->vctxt.warning = xmlParserValidityWarning;
|
|
ctxt->record_info = 0;
|
|
ctxt->validate = 0;
|
|
ctxt->checkIndex = 0;
|
|
ctxt->catalogs = NULL;
|
|
xmlInitNodeInfoSeq(&ctxt->node_seq);
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* htmlFreeParserCtxt:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* Free all the memory used by a parser context. However the parsed
|
|
* document in ctxt->myDoc is not freed.
|
|
*/
|
|
|
|
void
|
|
htmlFreeParserCtxt(htmlParserCtxtPtr ctxt)
|
|
{
|
|
xmlFreeParserCtxt(ctxt);
|
|
}
|
|
|
|
/**
|
|
* htmlNewParserCtxt:
|
|
*
|
|
* Allocate and initialize a new parser context.
|
|
*
|
|
* Returns the htmlParserCtxtPtr or NULL in case of allocation error
|
|
*/
|
|
|
|
htmlParserCtxtPtr
|
|
htmlNewParserCtxt(void)
|
|
{
|
|
xmlParserCtxtPtr ctxt;
|
|
|
|
ctxt = (xmlParserCtxtPtr) xmlMalloc(sizeof(xmlParserCtxt));
|
|
if (ctxt == NULL) {
|
|
htmlErrMemory(NULL, "NewParserCtxt: out of memory\n");
|
|
return(NULL);
|
|
}
|
|
memset(ctxt, 0, sizeof(xmlParserCtxt));
|
|
if (htmlInitParserCtxt(ctxt) < 0) {
|
|
htmlFreeParserCtxt(ctxt);
|
|
return(NULL);
|
|
}
|
|
return(ctxt);
|
|
}
|
|
|
|
/**
|
|
* htmlCreateMemoryParserCtxt:
|
|
* @buffer: a pointer to a char array
|
|
* @size: the size of the array
|
|
*
|
|
* Create a parser context for an HTML in-memory document.
|
|
*
|
|
* Returns the new parser context or NULL
|
|
*/
|
|
htmlParserCtxtPtr
|
|
htmlCreateMemoryParserCtxt(const char *buffer, int size) {
|
|
xmlParserCtxtPtr ctxt;
|
|
xmlParserInputPtr input;
|
|
xmlParserInputBufferPtr buf;
|
|
|
|
if (buffer == NULL)
|
|
return(NULL);
|
|
if (size <= 0)
|
|
return(NULL);
|
|
|
|
ctxt = htmlNewParserCtxt();
|
|
if (ctxt == NULL)
|
|
return(NULL);
|
|
|
|
buf = xmlParserInputBufferCreateMem(buffer, size, XML_CHAR_ENCODING_NONE);
|
|
if (buf == NULL) return(NULL);
|
|
|
|
input = xmlNewInputStream(ctxt);
|
|
if (input == NULL) {
|
|
xmlFreeParserCtxt(ctxt);
|
|
return(NULL);
|
|
}
|
|
|
|
input->filename = NULL;
|
|
input->buf = buf;
|
|
xmlBufResetInput(buf->buffer, input);
|
|
|
|
inputPush(ctxt, input);
|
|
return(ctxt);
|
|
}
|
|
|
|
/**
|
|
* htmlCreateDocParserCtxt:
|
|
* @cur: a pointer to an array of xmlChar
|
|
* @encoding: a free form C string describing the HTML document encoding, or NULL
|
|
*
|
|
* Create a parser context for an HTML document.
|
|
*
|
|
* TODO: check the need to add encoding handling there
|
|
*
|
|
* Returns the new parser context or NULL
|
|
*/
|
|
static htmlParserCtxtPtr
|
|
htmlCreateDocParserCtxt(const xmlChar *cur, const char *encoding) {
|
|
int len;
|
|
htmlParserCtxtPtr ctxt;
|
|
|
|
if (cur == NULL)
|
|
return(NULL);
|
|
len = xmlStrlen(cur);
|
|
ctxt = htmlCreateMemoryParserCtxt((char *)cur, len);
|
|
if (ctxt == NULL)
|
|
return(NULL);
|
|
|
|
if (encoding != NULL) {
|
|
xmlCharEncoding enc;
|
|
xmlCharEncodingHandlerPtr handler;
|
|
|
|
if (ctxt->input->encoding != NULL)
|
|
xmlFree((xmlChar *) ctxt->input->encoding);
|
|
ctxt->input->encoding = xmlStrdup((const xmlChar *) encoding);
|
|
|
|
enc = xmlParseCharEncoding(encoding);
|
|
/*
|
|
* registered set of known encodings
|
|
*/
|
|
if (enc != XML_CHAR_ENCODING_ERROR) {
|
|
xmlSwitchEncoding(ctxt, enc);
|
|
if (ctxt->errNo == XML_ERR_UNSUPPORTED_ENCODING) {
|
|
htmlParseErr(ctxt, XML_ERR_UNSUPPORTED_ENCODING,
|
|
"Unsupported encoding %s\n",
|
|
(const xmlChar *) encoding, NULL);
|
|
}
|
|
} else {
|
|
/*
|
|
* fallback for unknown encodings
|
|
*/
|
|
handler = xmlFindCharEncodingHandler((const char *) encoding);
|
|
if (handler != NULL) {
|
|
xmlSwitchToEncoding(ctxt, handler);
|
|
} else {
|
|
htmlParseErr(ctxt, XML_ERR_UNSUPPORTED_ENCODING,
|
|
"Unsupported encoding %s\n",
|
|
(const xmlChar *) encoding, NULL);
|
|
}
|
|
}
|
|
}
|
|
return(ctxt);
|
|
}
|
|
|
|
#ifdef LIBXML_PUSH_ENABLED
|
|
/************************************************************************
|
|
* *
|
|
* 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
|
|
* @ignoreattrval: skip over attribute values
|
|
*
|
|
* Try to find if a sequence (first, next, third) or just (first next) or
|
|
* (first) is available in the input stream.
|
|
* This function has a side effect of (possibly) incrementing ctxt->checkIndex
|
|
* to avoid rescanning sequences of bytes, it DOES change the state of the
|
|
* parser, do not use liberally.
|
|
* This is basically similar to xmlParseLookupSequence()
|
|
*
|
|
* Returns the index to the current parsing point if the full sequence
|
|
* is available, -1 otherwise.
|
|
*/
|
|
static int
|
|
htmlParseLookupSequence(htmlParserCtxtPtr ctxt, xmlChar first,
|
|
xmlChar next, xmlChar third, int ignoreattrval)
|
|
{
|
|
int base, len;
|
|
htmlParserInputPtr in;
|
|
const xmlChar *buf;
|
|
int invalue = 0;
|
|
char valdellim = 0x0;
|
|
|
|
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;
|
|
/* Abuse hasPErefs member to restore current state. */
|
|
invalue = ctxt->hasPErefs & 1 ? 1 : 0;
|
|
}
|
|
|
|
if (in->buf == NULL) {
|
|
buf = in->base;
|
|
len = in->length;
|
|
} else {
|
|
buf = xmlBufContent(in->buf->buffer);
|
|
len = xmlBufUse(in->buf->buffer);
|
|
}
|
|
|
|
/* take into account the sequence length */
|
|
if (third)
|
|
len -= 2;
|
|
else if (next)
|
|
len--;
|
|
for (; base < len; base++) {
|
|
if (ignoreattrval) {
|
|
if (buf[base] == '"' || buf[base] == '\'') {
|
|
if (invalue) {
|
|
if (buf[base] == valdellim) {
|
|
invalue = 0;
|
|
continue;
|
|
}
|
|
} else {
|
|
valdellim = buf[base];
|
|
invalue = 1;
|
|
continue;
|
|
}
|
|
} else if (invalue) {
|
|
continue;
|
|
}
|
|
}
|
|
if (buf[base] == first) {
|
|
if (third != 0) {
|
|
if ((buf[base + 1] != next) || (buf[base + 2] != third))
|
|
continue;
|
|
} else if (next != 0) {
|
|
if (buf[base + 1] != next)
|
|
continue;
|
|
}
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
if (next == 0)
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: lookup '%c' found at %d\n",
|
|
first, base);
|
|
else if (third == 0)
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: lookup '%c%c' found at %d\n",
|
|
first, next, base);
|
|
else
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: lookup '%c%c%c' found at %d\n",
|
|
first, next, third, base);
|
|
#endif
|
|
return (base - (in->cur - in->base));
|
|
}
|
|
}
|
|
ctxt->checkIndex = base;
|
|
/* Abuse hasPErefs member to track current state. */
|
|
if (invalue)
|
|
ctxt->hasPErefs |= 1;
|
|
else
|
|
ctxt->hasPErefs &= ~1;
|
|
#ifdef DEBUG_PUSH
|
|
if (next == 0)
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: lookup '%c' failed\n", first);
|
|
else if (third == 0)
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: lookup '%c%c' failed\n", first, next);
|
|
else
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: lookup '%c%c%c' failed\n", first, next,
|
|
third);
|
|
#endif
|
|
return (-1);
|
|
}
|
|
|
|
/**
|
|
* htmlParseLookupCommentEnd:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* Try to find a comment end tag in the input stream
|
|
* The search includes "-->" as well as WHATWG-recommended incorrectly-closed tags.
|
|
* (See https://html.spec.whatwg.org/multipage/parsing.html#parse-error-incorrectly-closed-comment)
|
|
* This function has a side effect of (possibly) incrementing ctxt->checkIndex
|
|
* to avoid rescanning sequences of bytes, it DOES change the state of the
|
|
* parser, do not use liberally.
|
|
* This wraps to htmlParseLookupSequence()
|
|
*
|
|
* Returns the index to the current parsing point if the full sequence is available, -1 otherwise.
|
|
*/
|
|
static int
|
|
htmlParseLookupCommentEnd(htmlParserCtxtPtr ctxt)
|
|
{
|
|
int mark = 0;
|
|
int cur = CUR_PTR - BASE_PTR;
|
|
|
|
while (mark >= 0) {
|
|
mark = htmlParseLookupSequence(ctxt, '-', '-', 0, 0);
|
|
if ((mark < 0) ||
|
|
(NXT(mark+2) == '>') ||
|
|
((NXT(mark+2) == '!') && (NXT(mark+3) == '>'))) {
|
|
return mark;
|
|
}
|
|
ctxt->checkIndex = cur + mark + 1;
|
|
}
|
|
return mark;
|
|
}
|
|
|
|
|
|
/**
|
|
* htmlParseTryOrFinish:
|
|
* @ctxt: an HTML parser context
|
|
* @terminate: last chunk indicator
|
|
*
|
|
* Try to progress on parsing
|
|
*
|
|
* Returns zero if no parsing was possible
|
|
*/
|
|
static int
|
|
htmlParseTryOrFinish(htmlParserCtxtPtr ctxt, int terminate) {
|
|
int ret = 0;
|
|
htmlParserInputPtr in;
|
|
ptrdiff_t avail = 0;
|
|
xmlChar cur, next;
|
|
|
|
htmlParserNodeInfo node_info;
|
|
|
|
#ifdef DEBUG_PUSH
|
|
switch (ctxt->instate) {
|
|
case XML_PARSER_EOF:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try EOF\n"); break;
|
|
case XML_PARSER_START:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try START\n"); break;
|
|
case XML_PARSER_MISC:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try MISC\n");break;
|
|
case XML_PARSER_COMMENT:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try COMMENT\n");break;
|
|
case XML_PARSER_PROLOG:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try PROLOG\n");break;
|
|
case XML_PARSER_START_TAG:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try START_TAG\n");break;
|
|
case XML_PARSER_CONTENT:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try CONTENT\n");break;
|
|
case XML_PARSER_CDATA_SECTION:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try CDATA_SECTION\n");break;
|
|
case XML_PARSER_END_TAG:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try END_TAG\n");break;
|
|
case XML_PARSER_ENTITY_DECL:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try ENTITY_DECL\n");break;
|
|
case XML_PARSER_ENTITY_VALUE:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try ENTITY_VALUE\n");break;
|
|
case XML_PARSER_ATTRIBUTE_VALUE:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try ATTRIBUTE_VALUE\n");break;
|
|
case XML_PARSER_DTD:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try DTD\n");break;
|
|
case XML_PARSER_EPILOG:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try EPILOG\n");break;
|
|
case XML_PARSER_PI:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try PI\n");break;
|
|
case XML_PARSER_SYSTEM_LITERAL:
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: try SYSTEM_LITERAL\n");break;
|
|
}
|
|
#endif
|
|
|
|
while (1) {
|
|
|
|
in = ctxt->input;
|
|
if (in == NULL) break;
|
|
if (in->buf == NULL)
|
|
avail = in->length - (in->cur - in->base);
|
|
else
|
|
avail = (ptrdiff_t)xmlBufUse(in->buf->buffer) -
|
|
(in->cur - in->base);
|
|
if ((avail == 0) && (terminate)) {
|
|
htmlAutoCloseOnEnd(ctxt);
|
|
if ((ctxt->nameNr == 0) && (ctxt->instate != XML_PARSER_EOF)) {
|
|
/*
|
|
* SAX: end of the document processing.
|
|
*/
|
|
ctxt->instate = XML_PARSER_EOF;
|
|
if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
|
|
ctxt->sax->endDocument(ctxt->userData);
|
|
}
|
|
}
|
|
if (avail < 1)
|
|
goto done;
|
|
/*
|
|
* This is done to make progress and avoid an infinite loop
|
|
* if a parsing attempt was aborted by hitting a NUL byte. After
|
|
* changing htmlCurrentChar, this probably isn't necessary anymore.
|
|
* We should consider removing this check.
|
|
*/
|
|
cur = in->cur[0];
|
|
if (cur == 0) {
|
|
SKIP(1);
|
|
continue;
|
|
}
|
|
|
|
switch (ctxt->instate) {
|
|
case XML_PARSER_EOF:
|
|
/*
|
|
* Document parsing is done !
|
|
*/
|
|
goto done;
|
|
case XML_PARSER_START:
|
|
/*
|
|
* Very first chars read from the document flow.
|
|
*/
|
|
cur = in->cur[0];
|
|
if (IS_BLANK_CH(cur)) {
|
|
SKIP_BLANKS;
|
|
if (in->buf == NULL)
|
|
avail = in->length - (in->cur - in->base);
|
|
else
|
|
avail = (ptrdiff_t)xmlBufUse(in->buf->buffer) -
|
|
(in->cur - in->base);
|
|
}
|
|
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
|
|
ctxt->sax->setDocumentLocator(ctxt->userData,
|
|
&xmlDefaultSAXLocator);
|
|
if ((ctxt->sax) && (ctxt->sax->startDocument) &&
|
|
(!ctxt->disableSAX))
|
|
ctxt->sax->startDocument(ctxt->userData);
|
|
|
|
cur = in->cur[0];
|
|
next = in->cur[1];
|
|
if ((cur == '<') && (next == '!') &&
|
|
(UPP(2) == 'D') && (UPP(3) == 'O') &&
|
|
(UPP(4) == 'C') && (UPP(5) == 'T') &&
|
|
(UPP(6) == 'Y') && (UPP(7) == 'P') &&
|
|
(UPP(8) == 'E')) {
|
|
if ((!terminate) &&
|
|
(htmlParseLookupSequence(ctxt, '>', 0, 0, 1) < 0))
|
|
goto done;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: Parsing internal subset\n");
|
|
#endif
|
|
htmlParseDocTypeDecl(ctxt);
|
|
ctxt->instate = XML_PARSER_PROLOG;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering PROLOG\n");
|
|
#endif
|
|
} else {
|
|
ctxt->instate = XML_PARSER_MISC;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering MISC\n");
|
|
#endif
|
|
}
|
|
break;
|
|
case XML_PARSER_MISC:
|
|
SKIP_BLANKS;
|
|
if (in->buf == NULL)
|
|
avail = in->length - (in->cur - in->base);
|
|
else
|
|
avail = (ptrdiff_t)xmlBufUse(in->buf->buffer) -
|
|
(in->cur - in->base);
|
|
/*
|
|
* no chars in buffer
|
|
*/
|
|
if (avail < 1)
|
|
goto done;
|
|
/*
|
|
* not enough chars in buffer
|
|
*/
|
|
if (avail < 2) {
|
|
if (!terminate)
|
|
goto done;
|
|
else
|
|
next = ' ';
|
|
} else {
|
|
next = in->cur[1];
|
|
}
|
|
cur = in->cur[0];
|
|
if ((cur == '<') && (next == '!') &&
|
|
(in->cur[2] == '-') && (in->cur[3] == '-')) {
|
|
if ((!terminate) && (htmlParseLookupCommentEnd(ctxt) < 0))
|
|
goto done;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: Parsing Comment\n");
|
|
#endif
|
|
htmlParseComment(ctxt);
|
|
ctxt->instate = XML_PARSER_MISC;
|
|
} else if ((cur == '<') && (next == '?')) {
|
|
if ((!terminate) &&
|
|
(htmlParseLookupSequence(ctxt, '>', 0, 0, 0) < 0))
|
|
goto done;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: Parsing PI\n");
|
|
#endif
|
|
htmlParsePI(ctxt);
|
|
ctxt->instate = XML_PARSER_MISC;
|
|
} else if ((cur == '<') && (next == '!') &&
|
|
(UPP(2) == 'D') && (UPP(3) == 'O') &&
|
|
(UPP(4) == 'C') && (UPP(5) == 'T') &&
|
|
(UPP(6) == 'Y') && (UPP(7) == 'P') &&
|
|
(UPP(8) == 'E')) {
|
|
if ((!terminate) &&
|
|
(htmlParseLookupSequence(ctxt, '>', 0, 0, 1) < 0))
|
|
goto done;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: Parsing internal subset\n");
|
|
#endif
|
|
htmlParseDocTypeDecl(ctxt);
|
|
ctxt->instate = XML_PARSER_PROLOG;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering PROLOG\n");
|
|
#endif
|
|
} else if ((cur == '<') && (next == '!') &&
|
|
(avail < 9)) {
|
|
goto done;
|
|
} else {
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering START_TAG\n");
|
|
#endif
|
|
}
|
|
break;
|
|
case XML_PARSER_PROLOG:
|
|
SKIP_BLANKS;
|
|
if (in->buf == NULL)
|
|
avail = in->length - (in->cur - in->base);
|
|
else
|
|
avail = (ptrdiff_t)xmlBufUse(in->buf->buffer) -
|
|
(in->cur - in->base);
|
|
if (avail < 2)
|
|
goto done;
|
|
cur = in->cur[0];
|
|
next = in->cur[1];
|
|
if ((cur == '<') && (next == '!') &&
|
|
(in->cur[2] == '-') && (in->cur[3] == '-')) {
|
|
if ((!terminate) && (htmlParseLookupCommentEnd(ctxt) < 0))
|
|
goto done;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: Parsing Comment\n");
|
|
#endif
|
|
htmlParseComment(ctxt);
|
|
ctxt->instate = XML_PARSER_PROLOG;
|
|
} else if ((cur == '<') && (next == '?')) {
|
|
if ((!terminate) &&
|
|
(htmlParseLookupSequence(ctxt, '>', 0, 0, 0) < 0))
|
|
goto done;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: Parsing PI\n");
|
|
#endif
|
|
htmlParsePI(ctxt);
|
|
ctxt->instate = XML_PARSER_PROLOG;
|
|
} else if ((cur == '<') && (next == '!') &&
|
|
(avail < 4)) {
|
|
goto done;
|
|
} else {
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering START_TAG\n");
|
|
#endif
|
|
}
|
|
break;
|
|
case XML_PARSER_EPILOG:
|
|
if (in->buf == NULL)
|
|
avail = in->length - (in->cur - in->base);
|
|
else
|
|
avail = (ptrdiff_t)xmlBufUse(in->buf->buffer) -
|
|
(in->cur - in->base);
|
|
if (avail < 1)
|
|
goto done;
|
|
cur = in->cur[0];
|
|
if (IS_BLANK_CH(cur)) {
|
|
htmlParseCharData(ctxt);
|
|
goto done;
|
|
}
|
|
if (avail < 2)
|
|
goto done;
|
|
next = in->cur[1];
|
|
if ((cur == '<') && (next == '!') &&
|
|
(in->cur[2] == '-') && (in->cur[3] == '-')) {
|
|
if ((!terminate) && (htmlParseLookupCommentEnd(ctxt) < 0))
|
|
goto done;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: Parsing Comment\n");
|
|
#endif
|
|
htmlParseComment(ctxt);
|
|
ctxt->instate = XML_PARSER_EPILOG;
|
|
} else if ((cur == '<') && (next == '?')) {
|
|
if ((!terminate) &&
|
|
(htmlParseLookupSequence(ctxt, '>', 0, 0, 0) < 0))
|
|
goto done;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: Parsing PI\n");
|
|
#endif
|
|
htmlParsePI(ctxt);
|
|
ctxt->instate = XML_PARSER_EPILOG;
|
|
} else if ((cur == '<') && (next == '!') &&
|
|
(avail < 4)) {
|
|
goto done;
|
|
} else {
|
|
ctxt->errNo = XML_ERR_DOCUMENT_END;
|
|
ctxt->wellFormed = 0;
|
|
ctxt->instate = XML_PARSER_EOF;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering EOF\n");
|
|
#endif
|
|
if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
|
|
ctxt->sax->endDocument(ctxt->userData);
|
|
goto done;
|
|
}
|
|
break;
|
|
case XML_PARSER_START_TAG: {
|
|
const xmlChar *name;
|
|
int failed;
|
|
const htmlElemDesc * info;
|
|
|
|
/*
|
|
* no chars in buffer
|
|
*/
|
|
if (avail < 1)
|
|
goto done;
|
|
/*
|
|
* not enough chars in buffer
|
|
*/
|
|
if (avail < 2) {
|
|
if (!terminate)
|
|
goto done;
|
|
else
|
|
next = ' ';
|
|
} else {
|
|
next = in->cur[1];
|
|
}
|
|
cur = in->cur[0];
|
|
if (cur != '<') {
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering CONTENT\n");
|
|
#endif
|
|
break;
|
|
}
|
|
if (next == '/') {
|
|
ctxt->instate = XML_PARSER_END_TAG;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering END_TAG\n");
|
|
#endif
|
|
break;
|
|
}
|
|
if ((!terminate) &&
|
|
(htmlParseLookupSequence(ctxt, '>', 0, 0, 1) < 0))
|
|
goto done;
|
|
|
|
/* Capture start position */
|
|
if (ctxt->record_info) {
|
|
node_info.begin_pos = ctxt->input->consumed +
|
|
(CUR_PTR - ctxt->input->base);
|
|
node_info.begin_line = ctxt->input->line;
|
|
}
|
|
|
|
|
|
failed = htmlParseStartTag(ctxt);
|
|
name = ctxt->name;
|
|
if ((failed == -1) ||
|
|
(name == NULL)) {
|
|
if (CUR == '>')
|
|
NEXT;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Lookup the info for that element.
|
|
*/
|
|
info = htmlTagLookup(name);
|
|
if (info == NULL) {
|
|
htmlParseErr(ctxt, XML_HTML_UNKNOWN_TAG,
|
|
"Tag %s invalid\n", name, NULL);
|
|
}
|
|
|
|
/*
|
|
* Check for an Empty Element labeled the XML/SGML way
|
|
*/
|
|
if ((CUR == '/') && (NXT(1) == '>')) {
|
|
SKIP(2);
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
|
|
ctxt->sax->endElement(ctxt->userData, name);
|
|
htmlnamePop(ctxt);
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering CONTENT\n");
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
if (CUR == '>') {
|
|
NEXT;
|
|
} else {
|
|
htmlParseErr(ctxt, XML_ERR_GT_REQUIRED,
|
|
"Couldn't find end of Start Tag %s\n",
|
|
name, NULL);
|
|
|
|
/*
|
|
* end of parsing of this node.
|
|
*/
|
|
if (xmlStrEqual(name, ctxt->name)) {
|
|
nodePop(ctxt);
|
|
htmlnamePop(ctxt);
|
|
}
|
|
|
|
if (ctxt->record_info)
|
|
htmlNodeInfoPush(ctxt, &node_info);
|
|
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering CONTENT\n");
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Check for an Empty Element from DTD definition
|
|
*/
|
|
if ((info != NULL) && (info->empty)) {
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->endElement != NULL))
|
|
ctxt->sax->endElement(ctxt->userData, name);
|
|
htmlnamePop(ctxt);
|
|
}
|
|
|
|
if (ctxt->record_info)
|
|
htmlNodeInfoPush(ctxt, &node_info);
|
|
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering CONTENT\n");
|
|
#endif
|
|
break;
|
|
}
|
|
case XML_PARSER_CONTENT: {
|
|
xmlChar chr[2] = { 0, 0 };
|
|
|
|
/*
|
|
* Handle preparsed entities and charRef
|
|
*/
|
|
if (ctxt->token != 0) {
|
|
chr[0] = (xmlChar) ctxt->token;
|
|
htmlCheckParagraph(ctxt);
|
|
if ((ctxt->sax != NULL) && (ctxt->sax->characters != NULL))
|
|
ctxt->sax->characters(ctxt->userData, chr, 1);
|
|
ctxt->token = 0;
|
|
ctxt->checkIndex = 0;
|
|
}
|
|
if ((avail == 1) && (terminate)) {
|
|
cur = in->cur[0];
|
|
if ((cur != '<') && (cur != '&')) {
|
|
if (ctxt->sax != NULL) {
|
|
chr[0] = cur;
|
|
if (IS_BLANK_CH(cur)) {
|
|
if (ctxt->keepBlanks) {
|
|
if (ctxt->sax->characters != NULL)
|
|
ctxt->sax->characters(
|
|
ctxt->userData, chr, 1);
|
|
} else {
|
|
if (ctxt->sax->ignorableWhitespace != NULL)
|
|
ctxt->sax->ignorableWhitespace(
|
|
ctxt->userData, chr, 1);
|
|
}
|
|
} else {
|
|
htmlCheckParagraph(ctxt);
|
|
if (ctxt->sax->characters != NULL)
|
|
ctxt->sax->characters(
|
|
ctxt->userData, chr, 1);
|
|
}
|
|
}
|
|
ctxt->token = 0;
|
|
ctxt->checkIndex = 0;
|
|
in->cur++;
|
|
break;
|
|
}
|
|
}
|
|
if (avail < 2)
|
|
goto done;
|
|
cur = in->cur[0];
|
|
next = in->cur[1];
|
|
if ((xmlStrEqual(ctxt->name, BAD_CAST"script")) ||
|
|
(xmlStrEqual(ctxt->name, BAD_CAST"style"))) {
|
|
/*
|
|
* Handle SCRIPT/STYLE separately
|
|
*/
|
|
if (!terminate) {
|
|
int idx;
|
|
xmlChar val;
|
|
|
|
idx = htmlParseLookupSequence(ctxt, '<', '/', 0, 0);
|
|
if (idx < 0)
|
|
goto done;
|
|
val = in->cur[idx + 2];
|
|
if (val == 0) /* bad cut of input */
|
|
goto done;
|
|
}
|
|
htmlParseScript(ctxt);
|
|
if ((cur == '<') && (next == '/')) {
|
|
ctxt->instate = XML_PARSER_END_TAG;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering END_TAG\n");
|
|
#endif
|
|
break;
|
|
}
|
|
} else {
|
|
/*
|
|
* Sometimes DOCTYPE arrives in the middle of the document
|
|
*/
|
|
if ((cur == '<') && (next == '!') &&
|
|
(UPP(2) == 'D') && (UPP(3) == 'O') &&
|
|
(UPP(4) == 'C') && (UPP(5) == 'T') &&
|
|
(UPP(6) == 'Y') && (UPP(7) == 'P') &&
|
|
(UPP(8) == 'E')) {
|
|
if ((!terminate) &&
|
|
(htmlParseLookupSequence(ctxt, '>', 0, 0, 1) < 0))
|
|
goto done;
|
|
htmlParseErr(ctxt, XML_HTML_STRUCURE_ERROR,
|
|
"Misplaced DOCTYPE declaration\n",
|
|
BAD_CAST "DOCTYPE" , NULL);
|
|
htmlParseDocTypeDecl(ctxt);
|
|
} else if ((cur == '<') && (next == '!') &&
|
|
(in->cur[2] == '-') && (in->cur[3] == '-')) {
|
|
if ((!terminate) && (htmlParseLookupCommentEnd(ctxt) < 0))
|
|
goto done;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: Parsing Comment\n");
|
|
#endif
|
|
htmlParseComment(ctxt);
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
} else if ((cur == '<') && (next == '?')) {
|
|
if ((!terminate) &&
|
|
(htmlParseLookupSequence(ctxt, '>', 0, 0, 0) < 0))
|
|
goto done;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: Parsing PI\n");
|
|
#endif
|
|
htmlParsePI(ctxt);
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
} else if ((cur == '<') && (next == '!') && (avail < 4)) {
|
|
goto done;
|
|
} else if ((cur == '<') && (next == '/')) {
|
|
ctxt->instate = XML_PARSER_END_TAG;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering END_TAG\n");
|
|
#endif
|
|
break;
|
|
} else if (cur == '<') {
|
|
if ((!terminate) && (next == 0))
|
|
goto done;
|
|
/*
|
|
* Only switch to START_TAG if the next character
|
|
* starts a valid name. Otherwise, htmlParseStartTag
|
|
* might return without consuming all characters
|
|
* up to the final '>'.
|
|
*/
|
|
if ((IS_ASCII_LETTER(next)) ||
|
|
(next == '_') || (next == ':') || (next == '.')) {
|
|
ctxt->instate = XML_PARSER_START_TAG;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering START_TAG\n");
|
|
#endif
|
|
} else {
|
|
htmlParseErr(ctxt, XML_ERR_NAME_REQUIRED,
|
|
"htmlParseTryOrFinish: "
|
|
"invalid element name\n",
|
|
NULL, NULL);
|
|
htmlCheckParagraph(ctxt);
|
|
if ((ctxt->sax != NULL) &&
|
|
(ctxt->sax->characters != NULL))
|
|
ctxt->sax->characters(ctxt->userData,
|
|
in->cur, 1);
|
|
NEXT;
|
|
}
|
|
break;
|
|
} else {
|
|
/*
|
|
* check that the text sequence is complete
|
|
* before handing out the data to the parser
|
|
* to avoid problems with erroneous end of
|
|
* data detection.
|
|
*/
|
|
if ((!terminate) &&
|
|
(htmlParseLookupSequence(ctxt, '<', 0, 0, 0) < 0))
|
|
goto done;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: Parsing char data\n");
|
|
#endif
|
|
while ((ctxt->instate != XML_PARSER_EOF) &&
|
|
(cur != '<') && (in->cur < in->end)) {
|
|
if (cur == '&') {
|
|
htmlParseReference(ctxt);
|
|
} else {
|
|
htmlParseCharData(ctxt);
|
|
}
|
|
cur = in->cur[0];
|
|
}
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
case XML_PARSER_END_TAG:
|
|
if (avail < 2)
|
|
goto done;
|
|
if ((!terminate) &&
|
|
(htmlParseLookupSequence(ctxt, '>', 0, 0, 0) < 0))
|
|
goto done;
|
|
htmlParseEndTag(ctxt);
|
|
if (ctxt->nameNr == 0) {
|
|
ctxt->instate = XML_PARSER_EPILOG;
|
|
} else {
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
}
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering CONTENT\n");
|
|
#endif
|
|
break;
|
|
case XML_PARSER_CDATA_SECTION:
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"HPP: internal error, state == CDATA\n",
|
|
NULL, NULL);
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering CONTENT\n");
|
|
#endif
|
|
break;
|
|
case XML_PARSER_DTD:
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"HPP: internal error, state == DTD\n",
|
|
NULL, NULL);
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering CONTENT\n");
|
|
#endif
|
|
break;
|
|
case XML_PARSER_COMMENT:
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"HPP: internal error, state == COMMENT\n",
|
|
NULL, NULL);
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering CONTENT\n");
|
|
#endif
|
|
break;
|
|
case XML_PARSER_PI:
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"HPP: internal error, state == PI\n",
|
|
NULL, NULL);
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering CONTENT\n");
|
|
#endif
|
|
break;
|
|
case XML_PARSER_ENTITY_DECL:
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"HPP: internal error, state == ENTITY_DECL\n",
|
|
NULL, NULL);
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering CONTENT\n");
|
|
#endif
|
|
break;
|
|
case XML_PARSER_ENTITY_VALUE:
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"HPP: internal error, state == ENTITY_VALUE\n",
|
|
NULL, NULL);
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering DTD\n");
|
|
#endif
|
|
break;
|
|
case XML_PARSER_ATTRIBUTE_VALUE:
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"HPP: internal error, state == ATTRIBUTE_VALUE\n",
|
|
NULL, NULL);
|
|
ctxt->instate = XML_PARSER_START_TAG;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering START_TAG\n");
|
|
#endif
|
|
break;
|
|
case XML_PARSER_SYSTEM_LITERAL:
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"HPP: internal error, state == XML_PARSER_SYSTEM_LITERAL\n",
|
|
NULL, NULL);
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering CONTENT\n");
|
|
#endif
|
|
break;
|
|
case XML_PARSER_IGNORE:
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"HPP: internal error, state == XML_PARSER_IGNORE\n",
|
|
NULL, NULL);
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering CONTENT\n");
|
|
#endif
|
|
break;
|
|
case XML_PARSER_PUBLIC_LITERAL:
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"HPP: internal error, state == XML_PARSER_LITERAL\n",
|
|
NULL, NULL);
|
|
ctxt->instate = XML_PARSER_CONTENT;
|
|
ctxt->checkIndex = 0;
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"HPP: entering CONTENT\n");
|
|
#endif
|
|
break;
|
|
|
|
}
|
|
}
|
|
done:
|
|
if ((avail == 0) && (terminate)) {
|
|
htmlAutoCloseOnEnd(ctxt);
|
|
if ((ctxt->nameNr == 0) && (ctxt->instate != XML_PARSER_EOF)) {
|
|
/*
|
|
* SAX: end of the document processing.
|
|
*/
|
|
ctxt->instate = XML_PARSER_EOF;
|
|
if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
|
|
ctxt->sax->endDocument(ctxt->userData);
|
|
}
|
|
}
|
|
if ((!(ctxt->options & HTML_PARSE_NODEFDTD)) && (ctxt->myDoc != NULL) &&
|
|
((terminate) || (ctxt->instate == XML_PARSER_EOF) ||
|
|
(ctxt->instate == XML_PARSER_EPILOG))) {
|
|
xmlDtdPtr dtd;
|
|
dtd = xmlGetIntSubset(ctxt->myDoc);
|
|
if (dtd == NULL)
|
|
ctxt->myDoc->intSubset =
|
|
xmlCreateIntSubset(ctxt->myDoc, BAD_CAST "html",
|
|
BAD_CAST "-//W3C//DTD HTML 4.0 Transitional//EN",
|
|
BAD_CAST "http://www.w3.org/TR/REC-html40/loose.dtd");
|
|
}
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext, "HPP: done %d\n", ret);
|
|
#endif
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* htmlParseChunk:
|
|
* @ctxt: an HTML parser context
|
|
* @chunk: an char array
|
|
* @size: the size in byte of the chunk
|
|
* @terminate: last chunk indicator
|
|
*
|
|
* Parse a Chunk of memory
|
|
*
|
|
* Returns zero if no error, the xmlParserErrors otherwise.
|
|
*/
|
|
int
|
|
htmlParseChunk(htmlParserCtxtPtr ctxt, const char *chunk, int size,
|
|
int terminate) {
|
|
if ((ctxt == NULL) || (ctxt->input == NULL)) {
|
|
htmlParseErr(ctxt, XML_ERR_INTERNAL_ERROR,
|
|
"htmlParseChunk: context error\n", NULL, NULL);
|
|
return(XML_ERR_INTERNAL_ERROR);
|
|
}
|
|
if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) &&
|
|
(ctxt->input->buf != NULL) && (ctxt->instate != XML_PARSER_EOF)) {
|
|
size_t base = xmlBufGetInputBase(ctxt->input->buf->buffer, ctxt->input);
|
|
size_t cur = ctxt->input->cur - ctxt->input->base;
|
|
int res;
|
|
|
|
res = xmlParserInputBufferPush(ctxt->input->buf, size, chunk);
|
|
xmlBufSetInputBaseCur(ctxt->input->buf->buffer, ctxt->input, base, cur);
|
|
if (res < 0) {
|
|
ctxt->errNo = XML_PARSER_EOF;
|
|
ctxt->disableSAX = 1;
|
|
return (XML_PARSER_EOF);
|
|
}
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext, "HPP: pushed %d\n", size);
|
|
#endif
|
|
|
|
#if 0
|
|
if ((terminate) || (ctxt->input->buf->buffer->use > 80))
|
|
htmlParseTryOrFinish(ctxt, terminate);
|
|
#endif
|
|
} else if (ctxt->instate != XML_PARSER_EOF) {
|
|
if ((ctxt->input != NULL) && ctxt->input->buf != NULL) {
|
|
xmlParserInputBufferPtr in = ctxt->input->buf;
|
|
if ((in->encoder != NULL) && (in->buffer != NULL) &&
|
|
(in->raw != NULL)) {
|
|
int nbchars;
|
|
size_t base = xmlBufGetInputBase(in->buffer, ctxt->input);
|
|
size_t current = ctxt->input->cur - ctxt->input->base;
|
|
|
|
nbchars = xmlCharEncInput(in, terminate);
|
|
xmlBufSetInputBaseCur(in->buffer, ctxt->input, base, current);
|
|
if (nbchars < 0) {
|
|
htmlParseErr(ctxt, XML_ERR_INVALID_ENCODING,
|
|
"encoder error\n", NULL, NULL);
|
|
return(XML_ERR_INVALID_ENCODING);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
htmlParseTryOrFinish(ctxt, terminate);
|
|
if (terminate) {
|
|
if ((ctxt->instate != XML_PARSER_EOF) &&
|
|
(ctxt->instate != XML_PARSER_EPILOG) &&
|
|
(ctxt->instate != XML_PARSER_MISC)) {
|
|
ctxt->errNo = XML_ERR_DOCUMENT_END;
|
|
ctxt->wellFormed = 0;
|
|
}
|
|
if (ctxt->instate != XML_PARSER_EOF) {
|
|
if ((ctxt->sax) && (ctxt->sax->endDocument != NULL))
|
|
ctxt->sax->endDocument(ctxt->userData);
|
|
}
|
|
ctxt->instate = XML_PARSER_EOF;
|
|
}
|
|
return((xmlParserErrors) ctxt->errNo);
|
|
}
|
|
|
|
/************************************************************************
|
|
* *
|
|
* User entry points *
|
|
* *
|
|
************************************************************************/
|
|
|
|
/**
|
|
* htmlCreatePushParserCtxt:
|
|
* @sax: a SAX handler
|
|
* @user_data: The user data returned on SAX callbacks
|
|
* @chunk: a pointer to an array of chars
|
|
* @size: number of chars in the array
|
|
* @filename: an optional file name or URI
|
|
* @enc: an optional encoding
|
|
*
|
|
* Create a parser context for using the HTML parser in push mode
|
|
* The value of @filename is used for fetching external entities
|
|
* and error/warning reports.
|
|
*
|
|
* Returns the new parser context or NULL
|
|
*/
|
|
htmlParserCtxtPtr
|
|
htmlCreatePushParserCtxt(htmlSAXHandlerPtr sax, void *user_data,
|
|
const char *chunk, int size, const char *filename,
|
|
xmlCharEncoding enc) {
|
|
htmlParserCtxtPtr ctxt;
|
|
htmlParserInputPtr inputStream;
|
|
xmlParserInputBufferPtr buf;
|
|
|
|
xmlInitParser();
|
|
|
|
buf = xmlAllocParserInputBuffer(enc);
|
|
if (buf == NULL) return(NULL);
|
|
|
|
ctxt = htmlNewParserCtxt();
|
|
if (ctxt == NULL) {
|
|
xmlFreeParserInputBuffer(buf);
|
|
return(NULL);
|
|
}
|
|
if(enc==XML_CHAR_ENCODING_UTF8 || buf->encoder)
|
|
ctxt->charset=XML_CHAR_ENCODING_UTF8;
|
|
if (sax != NULL) {
|
|
if (ctxt->sax != (xmlSAXHandlerPtr) &htmlDefaultSAXHandler)
|
|
xmlFree(ctxt->sax);
|
|
ctxt->sax = (htmlSAXHandlerPtr) xmlMalloc(sizeof(htmlSAXHandler));
|
|
if (ctxt->sax == NULL) {
|
|
xmlFree(buf);
|
|
xmlFree(ctxt);
|
|
return(NULL);
|
|
}
|
|
memcpy(ctxt->sax, sax, sizeof(htmlSAXHandler));
|
|
if (user_data != NULL)
|
|
ctxt->userData = user_data;
|
|
}
|
|
if (filename == NULL) {
|
|
ctxt->directory = NULL;
|
|
} else {
|
|
ctxt->directory = xmlParserGetDirectory(filename);
|
|
}
|
|
|
|
inputStream = htmlNewInputStream(ctxt);
|
|
if (inputStream == NULL) {
|
|
xmlFreeParserCtxt(ctxt);
|
|
xmlFree(buf);
|
|
return(NULL);
|
|
}
|
|
|
|
if (filename == NULL)
|
|
inputStream->filename = NULL;
|
|
else
|
|
inputStream->filename = (char *)
|
|
xmlCanonicPath((const xmlChar *) filename);
|
|
inputStream->buf = buf;
|
|
xmlBufResetInput(buf->buffer, inputStream);
|
|
|
|
inputPush(ctxt, inputStream);
|
|
|
|
if ((size > 0) && (chunk != NULL) && (ctxt->input != NULL) &&
|
|
(ctxt->input->buf != NULL)) {
|
|
size_t base = xmlBufGetInputBase(ctxt->input->buf->buffer, ctxt->input);
|
|
size_t cur = ctxt->input->cur - ctxt->input->base;
|
|
|
|
xmlParserInputBufferPush(ctxt->input->buf, size, chunk);
|
|
|
|
xmlBufSetInputBaseCur(ctxt->input->buf->buffer, ctxt->input, base, cur);
|
|
#ifdef DEBUG_PUSH
|
|
xmlGenericError(xmlGenericErrorContext, "HPP: pushed %d\n", size);
|
|
#endif
|
|
}
|
|
ctxt->progressive = 1;
|
|
|
|
return(ctxt);
|
|
}
|
|
#endif /* LIBXML_PUSH_ENABLED */
|
|
|
|
/**
|
|
* htmlSAXParseDoc:
|
|
* @cur: a pointer to an array of xmlChar
|
|
* @encoding: a free form C string describing the HTML document encoding, or NULL
|
|
* @sax: the SAX handler block
|
|
* @userData: if using SAX, this pointer will be provided on callbacks.
|
|
*
|
|
* Parse an HTML in-memory document. If sax is not NULL, use the SAX callbacks
|
|
* to handle parse events. If sax is NULL, fallback to the default DOM
|
|
* behavior and return a tree.
|
|
*
|
|
* Returns the resulting document tree unless SAX is NULL or the document is
|
|
* not well formed.
|
|
*/
|
|
|
|
htmlDocPtr
|
|
htmlSAXParseDoc(const xmlChar *cur, const char *encoding,
|
|
htmlSAXHandlerPtr sax, void *userData) {
|
|
htmlDocPtr ret;
|
|
htmlParserCtxtPtr ctxt;
|
|
|
|
xmlInitParser();
|
|
|
|
if (cur == NULL) return(NULL);
|
|
|
|
|
|
ctxt = htmlCreateDocParserCtxt(cur, encoding);
|
|
if (ctxt == NULL) return(NULL);
|
|
if (sax != NULL) {
|
|
if (ctxt->sax != NULL) xmlFree (ctxt->sax);
|
|
ctxt->sax = sax;
|
|
ctxt->userData = userData;
|
|
}
|
|
|
|
htmlParseDocument(ctxt);
|
|
ret = ctxt->myDoc;
|
|
if (sax != NULL) {
|
|
ctxt->sax = NULL;
|
|
ctxt->userData = NULL;
|
|
}
|
|
htmlFreeParserCtxt(ctxt);
|
|
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* htmlParseDoc:
|
|
* @cur: a pointer to an array of xmlChar
|
|
* @encoding: a free form C string describing the HTML document encoding, or NULL
|
|
*
|
|
* parse an HTML in-memory document and build a tree.
|
|
*
|
|
* Returns the resulting document tree
|
|
*/
|
|
|
|
htmlDocPtr
|
|
htmlParseDoc(const xmlChar *cur, const char *encoding) {
|
|
return(htmlSAXParseDoc(cur, encoding, NULL, NULL));
|
|
}
|
|
|
|
|
|
/**
|
|
* htmlCreateFileParserCtxt:
|
|
* @filename: the filename
|
|
* @encoding: a free form C string describing the HTML document encoding, or NULL
|
|
*
|
|
* Create a parser context for a file content.
|
|
* Automatic support for ZLIB/Compress compressed document is provided
|
|
* by default if found at compile-time.
|
|
*
|
|
* Returns the new parser context or NULL
|
|
*/
|
|
htmlParserCtxtPtr
|
|
htmlCreateFileParserCtxt(const char *filename, const char *encoding)
|
|
{
|
|
htmlParserCtxtPtr ctxt;
|
|
htmlParserInputPtr inputStream;
|
|
char *canonicFilename;
|
|
/* htmlCharEncoding enc; */
|
|
xmlChar *content, *content_line = (xmlChar *) "charset=";
|
|
|
|
if (filename == NULL)
|
|
return(NULL);
|
|
|
|
ctxt = htmlNewParserCtxt();
|
|
if (ctxt == NULL) {
|
|
return(NULL);
|
|
}
|
|
canonicFilename = (char *) xmlCanonicPath((const xmlChar *) filename);
|
|
if (canonicFilename == NULL) {
|
|
#ifdef LIBXML_SAX1_ENABLED
|
|
if (xmlDefaultSAXHandler.error != NULL) {
|
|
xmlDefaultSAXHandler.error(NULL, "out of memory\n");
|
|
}
|
|
#endif
|
|
xmlFreeParserCtxt(ctxt);
|
|
return(NULL);
|
|
}
|
|
|
|
inputStream = xmlLoadExternalEntity(canonicFilename, NULL, ctxt);
|
|
xmlFree(canonicFilename);
|
|
if (inputStream == NULL) {
|
|
xmlFreeParserCtxt(ctxt);
|
|
return(NULL);
|
|
}
|
|
|
|
inputPush(ctxt, inputStream);
|
|
|
|
/* set encoding */
|
|
if (encoding) {
|
|
size_t l = strlen(encoding);
|
|
|
|
if (l < 1000) {
|
|
content = xmlMallocAtomic (xmlStrlen(content_line) + l + 1);
|
|
if (content) {
|
|
strcpy ((char *)content, (char *)content_line);
|
|
strcat ((char *)content, (char *)encoding);
|
|
htmlCheckEncoding (ctxt, content);
|
|
xmlFree (content);
|
|
}
|
|
}
|
|
}
|
|
|
|
return(ctxt);
|
|
}
|
|
|
|
/**
|
|
* htmlSAXParseFile:
|
|
* @filename: the filename
|
|
* @encoding: a free form C string describing the HTML document encoding, or NULL
|
|
* @sax: the SAX handler block
|
|
* @userData: if using SAX, this pointer will be provided on callbacks.
|
|
*
|
|
* parse an HTML file and build a tree. Automatic support for ZLIB/Compress
|
|
* compressed document is provided by default if found at compile-time.
|
|
* It use the given SAX function block to handle the parsing callback.
|
|
* If sax is NULL, fallback to the default DOM tree building routines.
|
|
*
|
|
* Returns the resulting document tree unless SAX is NULL or the document is
|
|
* not well formed.
|
|
*/
|
|
|
|
htmlDocPtr
|
|
htmlSAXParseFile(const char *filename, const char *encoding, htmlSAXHandlerPtr sax,
|
|
void *userData) {
|
|
htmlDocPtr ret;
|
|
htmlParserCtxtPtr ctxt;
|
|
htmlSAXHandlerPtr oldsax = NULL;
|
|
|
|
xmlInitParser();
|
|
|
|
ctxt = htmlCreateFileParserCtxt(filename, encoding);
|
|
if (ctxt == NULL) return(NULL);
|
|
if (sax != NULL) {
|
|
oldsax = ctxt->sax;
|
|
ctxt->sax = sax;
|
|
ctxt->userData = userData;
|
|
}
|
|
|
|
htmlParseDocument(ctxt);
|
|
|
|
ret = ctxt->myDoc;
|
|
if (sax != NULL) {
|
|
ctxt->sax = oldsax;
|
|
ctxt->userData = NULL;
|
|
}
|
|
htmlFreeParserCtxt(ctxt);
|
|
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* htmlParseFile:
|
|
* @filename: the filename
|
|
* @encoding: a free form C string describing the HTML document encoding, or NULL
|
|
*
|
|
* parse an HTML file and build a tree. Automatic support for ZLIB/Compress
|
|
* compressed document is provided by default if found at compile-time.
|
|
*
|
|
* Returns the resulting document tree
|
|
*/
|
|
|
|
htmlDocPtr
|
|
htmlParseFile(const char *filename, const char *encoding) {
|
|
return(htmlSAXParseFile(filename, encoding, NULL, NULL));
|
|
}
|
|
|
|
/**
|
|
* htmlHandleOmittedElem:
|
|
* @val: int 0 or 1
|
|
*
|
|
* Set and return the previous value for handling HTML omitted tags.
|
|
*
|
|
* Returns the last value for 0 for no handling, 1 for auto insertion.
|
|
*/
|
|
|
|
int
|
|
htmlHandleOmittedElem(int val) {
|
|
int old = htmlOmittedDefaultValue;
|
|
|
|
htmlOmittedDefaultValue = val;
|
|
return(old);
|
|
}
|
|
|
|
/**
|
|
* htmlElementAllowedHere:
|
|
* @parent: HTML parent element
|
|
* @elt: HTML element
|
|
*
|
|
* Checks whether an HTML element may be a direct child of a parent element.
|
|
* Note - doesn't check for deprecated elements
|
|
*
|
|
* Returns 1 if allowed; 0 otherwise.
|
|
*/
|
|
int
|
|
htmlElementAllowedHere(const htmlElemDesc* parent, const xmlChar* elt) {
|
|
const char** p ;
|
|
|
|
if ( ! elt || ! parent || ! parent->subelts )
|
|
return 0 ;
|
|
|
|
for ( p = parent->subelts; *p; ++p )
|
|
if ( !xmlStrcmp((const xmlChar *)*p, elt) )
|
|
return 1 ;
|
|
|
|
return 0 ;
|
|
}
|
|
/**
|
|
* htmlElementStatusHere:
|
|
* @parent: HTML parent element
|
|
* @elt: HTML element
|
|
*
|
|
* Checks whether an HTML element may be a direct child of a parent element.
|
|
* and if so whether it is valid or deprecated.
|
|
*
|
|
* Returns one of HTML_VALID, HTML_DEPRECATED, HTML_INVALID
|
|
*/
|
|
htmlStatus
|
|
htmlElementStatusHere(const htmlElemDesc* parent, const htmlElemDesc* elt) {
|
|
if ( ! parent || ! elt )
|
|
return HTML_INVALID ;
|
|
if ( ! htmlElementAllowedHere(parent, (const xmlChar*) elt->name ) )
|
|
return HTML_INVALID ;
|
|
|
|
return ( elt->dtd == 0 ) ? HTML_VALID : HTML_DEPRECATED ;
|
|
}
|
|
/**
|
|
* htmlAttrAllowed:
|
|
* @elt: HTML element
|
|
* @attr: HTML attribute
|
|
* @legacy: whether to allow deprecated attributes
|
|
*
|
|
* Checks whether an attribute is valid for an element
|
|
* Has full knowledge of Required and Deprecated attributes
|
|
*
|
|
* Returns one of HTML_REQUIRED, HTML_VALID, HTML_DEPRECATED, HTML_INVALID
|
|
*/
|
|
htmlStatus
|
|
htmlAttrAllowed(const htmlElemDesc* elt, const xmlChar* attr, int legacy) {
|
|
const char** p ;
|
|
|
|
if ( !elt || ! attr )
|
|
return HTML_INVALID ;
|
|
|
|
if ( elt->attrs_req )
|
|
for ( p = elt->attrs_req; *p; ++p)
|
|
if ( !xmlStrcmp((const xmlChar*)*p, attr) )
|
|
return HTML_REQUIRED ;
|
|
|
|
if ( elt->attrs_opt )
|
|
for ( p = elt->attrs_opt; *p; ++p)
|
|
if ( !xmlStrcmp((const xmlChar*)*p, attr) )
|
|
return HTML_VALID ;
|
|
|
|
if ( legacy && elt->attrs_depr )
|
|
for ( p = elt->attrs_depr; *p; ++p)
|
|
if ( !xmlStrcmp((const xmlChar*)*p, attr) )
|
|
return HTML_DEPRECATED ;
|
|
|
|
return HTML_INVALID ;
|
|
}
|
|
/**
|
|
* htmlNodeStatus:
|
|
* @node: an htmlNodePtr in a tree
|
|
* @legacy: whether to allow deprecated elements (YES is faster here
|
|
* for Element nodes)
|
|
*
|
|
* Checks whether the tree node is valid. Experimental (the author
|
|
* only uses the HTML enhancements in a SAX parser)
|
|
*
|
|
* Return: for Element nodes, a return from htmlElementAllowedHere (if
|
|
* legacy allowed) or htmlElementStatusHere (otherwise).
|
|
* for Attribute nodes, a return from htmlAttrAllowed
|
|
* for other nodes, HTML_NA (no checks performed)
|
|
*/
|
|
htmlStatus
|
|
htmlNodeStatus(const htmlNodePtr node, int legacy) {
|
|
if ( ! node )
|
|
return HTML_INVALID ;
|
|
|
|
switch ( node->type ) {
|
|
case XML_ELEMENT_NODE:
|
|
return legacy
|
|
? ( htmlElementAllowedHere (
|
|
htmlTagLookup(node->parent->name) , node->name
|
|
) ? HTML_VALID : HTML_INVALID )
|
|
: htmlElementStatusHere(
|
|
htmlTagLookup(node->parent->name) ,
|
|
htmlTagLookup(node->name) )
|
|
;
|
|
case XML_ATTRIBUTE_NODE:
|
|
return htmlAttrAllowed(
|
|
htmlTagLookup(node->parent->name) , node->name, legacy) ;
|
|
default: return HTML_NA ;
|
|
}
|
|
}
|
|
/************************************************************************
|
|
* *
|
|
* New set (2.6.0) of simpler and more flexible APIs *
|
|
* *
|
|
************************************************************************/
|
|
/**
|
|
* DICT_FREE:
|
|
* @str: a string
|
|
*
|
|
* Free a string if it is not owned by the "dict" dictionary in the
|
|
* current scope
|
|
*/
|
|
#define DICT_FREE(str) \
|
|
if ((str) && ((!dict) || \
|
|
(xmlDictOwns(dict, (const xmlChar *)(str)) == 0))) \
|
|
xmlFree((char *)(str));
|
|
|
|
/**
|
|
* htmlCtxtReset:
|
|
* @ctxt: an HTML parser context
|
|
*
|
|
* Reset a parser context
|
|
*/
|
|
void
|
|
htmlCtxtReset(htmlParserCtxtPtr ctxt)
|
|
{
|
|
xmlParserInputPtr input;
|
|
xmlDictPtr dict;
|
|
|
|
if (ctxt == NULL)
|
|
return;
|
|
|
|
xmlInitParser();
|
|
dict = ctxt->dict;
|
|
|
|
while ((input = inputPop(ctxt)) != NULL) { /* Non consuming */
|
|
xmlFreeInputStream(input);
|
|
}
|
|
ctxt->inputNr = 0;
|
|
ctxt->input = NULL;
|
|
|
|
ctxt->spaceNr = 0;
|
|
if (ctxt->spaceTab != NULL) {
|
|
ctxt->spaceTab[0] = -1;
|
|
ctxt->space = &ctxt->spaceTab[0];
|
|
} else {
|
|
ctxt->space = NULL;
|
|
}
|
|
|
|
|
|
ctxt->nodeNr = 0;
|
|
ctxt->node = NULL;
|
|
|
|
ctxt->nameNr = 0;
|
|
ctxt->name = NULL;
|
|
|
|
DICT_FREE(ctxt->version);
|
|
ctxt->version = NULL;
|
|
DICT_FREE(ctxt->encoding);
|
|
ctxt->encoding = NULL;
|
|
DICT_FREE(ctxt->directory);
|
|
ctxt->directory = NULL;
|
|
DICT_FREE(ctxt->extSubURI);
|
|
ctxt->extSubURI = NULL;
|
|
DICT_FREE(ctxt->extSubSystem);
|
|
ctxt->extSubSystem = NULL;
|
|
if (ctxt->myDoc != NULL)
|
|
xmlFreeDoc(ctxt->myDoc);
|
|
ctxt->myDoc = NULL;
|
|
|
|
ctxt->standalone = -1;
|
|
ctxt->hasExternalSubset = 0;
|
|
ctxt->hasPErefs = 0;
|
|
ctxt->html = 1;
|
|
ctxt->external = 0;
|
|
ctxt->instate = XML_PARSER_START;
|
|
ctxt->token = 0;
|
|
|
|
ctxt->wellFormed = 1;
|
|
ctxt->nsWellFormed = 1;
|
|
ctxt->disableSAX = 0;
|
|
ctxt->valid = 1;
|
|
ctxt->vctxt.userData = ctxt;
|
|
ctxt->vctxt.error = xmlParserValidityError;
|
|
ctxt->vctxt.warning = xmlParserValidityWarning;
|
|
ctxt->record_info = 0;
|
|
ctxt->checkIndex = 0;
|
|
ctxt->inSubset = 0;
|
|
ctxt->errNo = XML_ERR_OK;
|
|
ctxt->depth = 0;
|
|
ctxt->charset = XML_CHAR_ENCODING_NONE;
|
|
ctxt->catalogs = NULL;
|
|
xmlInitNodeInfoSeq(&ctxt->node_seq);
|
|
|
|
if (ctxt->attsDefault != NULL) {
|
|
xmlHashFree(ctxt->attsDefault, xmlHashDefaultDeallocator);
|
|
ctxt->attsDefault = NULL;
|
|
}
|
|
if (ctxt->attsSpecial != NULL) {
|
|
xmlHashFree(ctxt->attsSpecial, NULL);
|
|
ctxt->attsSpecial = NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* htmlCtxtUseOptions:
|
|
* @ctxt: an HTML parser context
|
|
* @options: a combination of htmlParserOption(s)
|
|
*
|
|
* Applies the options to the parser context
|
|
*
|
|
* Returns 0 in case of success, the set of unknown or unimplemented options
|
|
* in case of error.
|
|
*/
|
|
int
|
|
htmlCtxtUseOptions(htmlParserCtxtPtr ctxt, int options)
|
|
{
|
|
if (ctxt == NULL)
|
|
return(-1);
|
|
|
|
if (options & HTML_PARSE_NOWARNING) {
|
|
ctxt->sax->warning = NULL;
|
|
ctxt->vctxt.warning = NULL;
|
|
options -= XML_PARSE_NOWARNING;
|
|
ctxt->options |= XML_PARSE_NOWARNING;
|
|
}
|
|
if (options & HTML_PARSE_NOERROR) {
|
|
ctxt->sax->error = NULL;
|
|
ctxt->vctxt.error = NULL;
|
|
ctxt->sax->fatalError = NULL;
|
|
options -= XML_PARSE_NOERROR;
|
|
ctxt->options |= XML_PARSE_NOERROR;
|
|
}
|
|
if (options & HTML_PARSE_PEDANTIC) {
|
|
ctxt->pedantic = 1;
|
|
options -= XML_PARSE_PEDANTIC;
|
|
ctxt->options |= XML_PARSE_PEDANTIC;
|
|
} else
|
|
ctxt->pedantic = 0;
|
|
if (options & XML_PARSE_NOBLANKS) {
|
|
ctxt->keepBlanks = 0;
|
|
ctxt->sax->ignorableWhitespace = xmlSAX2IgnorableWhitespace;
|
|
options -= XML_PARSE_NOBLANKS;
|
|
ctxt->options |= XML_PARSE_NOBLANKS;
|
|
} else
|
|
ctxt->keepBlanks = 1;
|
|
if (options & HTML_PARSE_RECOVER) {
|
|
ctxt->recovery = 1;
|
|
options -= HTML_PARSE_RECOVER;
|
|
} else
|
|
ctxt->recovery = 0;
|
|
if (options & HTML_PARSE_COMPACT) {
|
|
ctxt->options |= HTML_PARSE_COMPACT;
|
|
options -= HTML_PARSE_COMPACT;
|
|
}
|
|
if (options & XML_PARSE_HUGE) {
|
|
ctxt->options |= XML_PARSE_HUGE;
|
|
options -= XML_PARSE_HUGE;
|
|
}
|
|
if (options & HTML_PARSE_NODEFDTD) {
|
|
ctxt->options |= HTML_PARSE_NODEFDTD;
|
|
options -= HTML_PARSE_NODEFDTD;
|
|
}
|
|
if (options & HTML_PARSE_IGNORE_ENC) {
|
|
ctxt->options |= HTML_PARSE_IGNORE_ENC;
|
|
options -= HTML_PARSE_IGNORE_ENC;
|
|
}
|
|
if (options & HTML_PARSE_NOIMPLIED) {
|
|
ctxt->options |= HTML_PARSE_NOIMPLIED;
|
|
options -= HTML_PARSE_NOIMPLIED;
|
|
}
|
|
ctxt->dictNames = 0;
|
|
return (options);
|
|
}
|
|
|
|
/**
|
|
* htmlDoRead:
|
|
* @ctxt: an HTML parser context
|
|
* @URL: the base URL to use for the document
|
|
* @encoding: the document encoding, or NULL
|
|
* @options: a combination of htmlParserOption(s)
|
|
* @reuse: keep the context for reuse
|
|
*
|
|
* Common front-end for the htmlRead functions
|
|
*
|
|
* Returns the resulting document tree or NULL
|
|
*/
|
|
static htmlDocPtr
|
|
htmlDoRead(htmlParserCtxtPtr ctxt, const char *URL, const char *encoding,
|
|
int options, int reuse)
|
|
{
|
|
htmlDocPtr ret;
|
|
|
|
htmlCtxtUseOptions(ctxt, options);
|
|
ctxt->html = 1;
|
|
if (encoding != NULL) {
|
|
xmlCharEncodingHandlerPtr hdlr;
|
|
|
|
hdlr = xmlFindCharEncodingHandler(encoding);
|
|
if (hdlr != NULL) {
|
|
xmlSwitchToEncoding(ctxt, hdlr);
|
|
if (ctxt->input->encoding != NULL)
|
|
xmlFree((xmlChar *) ctxt->input->encoding);
|
|
ctxt->input->encoding = xmlStrdup((xmlChar *)encoding);
|
|
}
|
|
}
|
|
if ((URL != NULL) && (ctxt->input != NULL) &&
|
|
(ctxt->input->filename == NULL))
|
|
ctxt->input->filename = (char *) xmlStrdup((const xmlChar *) URL);
|
|
htmlParseDocument(ctxt);
|
|
ret = ctxt->myDoc;
|
|
ctxt->myDoc = NULL;
|
|
if (!reuse) {
|
|
if ((ctxt->dictNames) &&
|
|
(ret != NULL) &&
|
|
(ret->dict == ctxt->dict))
|
|
ctxt->dict = NULL;
|
|
xmlFreeParserCtxt(ctxt);
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
/**
|
|
* htmlReadDoc:
|
|
* @cur: a pointer to a zero terminated string
|
|
* @URL: the base URL to use for the document
|
|
* @encoding: the document encoding, or NULL
|
|
* @options: a combination of htmlParserOption(s)
|
|
*
|
|
* parse an XML in-memory document and build a tree.
|
|
*
|
|
* Returns the resulting document tree
|
|
*/
|
|
htmlDocPtr
|
|
htmlReadDoc(const xmlChar * cur, const char *URL, const char *encoding, int options)
|
|
{
|
|
htmlParserCtxtPtr ctxt;
|
|
|
|
if (cur == NULL)
|
|
return (NULL);
|
|
|
|
xmlInitParser();
|
|
ctxt = htmlCreateDocParserCtxt(cur, NULL);
|
|
if (ctxt == NULL)
|
|
return (NULL);
|
|
return (htmlDoRead(ctxt, URL, encoding, options, 0));
|
|
}
|
|
|
|
/**
|
|
* htmlReadFile:
|
|
* @filename: a file or URL
|
|
* @encoding: the document encoding, or NULL
|
|
* @options: a combination of htmlParserOption(s)
|
|
*
|
|
* parse an XML file from the filesystem or the network.
|
|
*
|
|
* Returns the resulting document tree
|
|
*/
|
|
htmlDocPtr
|
|
htmlReadFile(const char *filename, const char *encoding, int options)
|
|
{
|
|
htmlParserCtxtPtr ctxt;
|
|
|
|
xmlInitParser();
|
|
ctxt = htmlCreateFileParserCtxt(filename, encoding);
|
|
if (ctxt == NULL)
|
|
return (NULL);
|
|
return (htmlDoRead(ctxt, NULL, NULL, options, 0));
|
|
}
|
|
|
|
/**
|
|
* htmlReadMemory:
|
|
* @buffer: a pointer to a char array
|
|
* @size: the size of the array
|
|
* @URL: the base URL to use for the document
|
|
* @encoding: the document encoding, or NULL
|
|
* @options: a combination of htmlParserOption(s)
|
|
*
|
|
* parse an XML in-memory document and build a tree.
|
|
*
|
|
* Returns the resulting document tree
|
|
*/
|
|
htmlDocPtr
|
|
htmlReadMemory(const char *buffer, int size, const char *URL, const char *encoding, int options)
|
|
{
|
|
htmlParserCtxtPtr ctxt;
|
|
|
|
xmlInitParser();
|
|
ctxt = xmlCreateMemoryParserCtxt(buffer, size);
|
|
if (ctxt == NULL)
|
|
return (NULL);
|
|
htmlDefaultSAXHandlerInit();
|
|
if (ctxt->sax != NULL)
|
|
memcpy(ctxt->sax, &htmlDefaultSAXHandler, sizeof(xmlSAXHandlerV1));
|
|
return (htmlDoRead(ctxt, URL, encoding, options, 0));
|
|
}
|
|
|
|
/**
|
|
* htmlReadFd:
|
|
* @fd: an open file descriptor
|
|
* @URL: the base URL to use for the document
|
|
* @encoding: the document encoding, or NULL
|
|
* @options: a combination of htmlParserOption(s)
|
|
*
|
|
* parse an XML from a file descriptor and build a tree.
|
|
*
|
|
* Returns the resulting document tree
|
|
*/
|
|
htmlDocPtr
|
|
htmlReadFd(int fd, const char *URL, const char *encoding, int options)
|
|
{
|
|
htmlParserCtxtPtr ctxt;
|
|
xmlParserInputBufferPtr input;
|
|
xmlParserInputPtr stream;
|
|
|
|
if (fd < 0)
|
|
return (NULL);
|
|
xmlInitParser();
|
|
|
|
xmlInitParser();
|
|
input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE);
|
|
if (input == NULL)
|
|
return (NULL);
|
|
ctxt = xmlNewParserCtxt();
|
|
if (ctxt == NULL) {
|
|
xmlFreeParserInputBuffer(input);
|
|
return (NULL);
|
|
}
|
|
stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
|
|
if (stream == NULL) {
|
|
xmlFreeParserInputBuffer(input);
|
|
xmlFreeParserCtxt(ctxt);
|
|
return (NULL);
|
|
}
|
|
inputPush(ctxt, stream);
|
|
return (htmlDoRead(ctxt, URL, encoding, options, 0));
|
|
}
|
|
|
|
/**
|
|
* htmlReadIO:
|
|
* @ioread: an I/O read function
|
|
* @ioclose: an I/O close function
|
|
* @ioctx: an I/O handler
|
|
* @URL: the base URL to use for the document
|
|
* @encoding: the document encoding, or NULL
|
|
* @options: a combination of htmlParserOption(s)
|
|
*
|
|
* parse an HTML document from I/O functions and source and build a tree.
|
|
*
|
|
* Returns the resulting document tree
|
|
*/
|
|
htmlDocPtr
|
|
htmlReadIO(xmlInputReadCallback ioread, xmlInputCloseCallback ioclose,
|
|
void *ioctx, const char *URL, const char *encoding, int options)
|
|
{
|
|
htmlParserCtxtPtr ctxt;
|
|
xmlParserInputBufferPtr input;
|
|
xmlParserInputPtr stream;
|
|
|
|
if (ioread == NULL)
|
|
return (NULL);
|
|
xmlInitParser();
|
|
|
|
input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
|
|
XML_CHAR_ENCODING_NONE);
|
|
if (input == NULL) {
|
|
if (ioclose != NULL)
|
|
ioclose(ioctx);
|
|
return (NULL);
|
|
}
|
|
ctxt = htmlNewParserCtxt();
|
|
if (ctxt == NULL) {
|
|
xmlFreeParserInputBuffer(input);
|
|
return (NULL);
|
|
}
|
|
stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
|
|
if (stream == NULL) {
|
|
xmlFreeParserInputBuffer(input);
|
|
xmlFreeParserCtxt(ctxt);
|
|
return (NULL);
|
|
}
|
|
inputPush(ctxt, stream);
|
|
return (htmlDoRead(ctxt, URL, encoding, options, 0));
|
|
}
|
|
|
|
/**
|
|
* htmlCtxtReadDoc:
|
|
* @ctxt: an HTML parser context
|
|
* @cur: a pointer to a zero terminated string
|
|
* @URL: the base URL to use for the document
|
|
* @encoding: the document encoding, or NULL
|
|
* @options: a combination of htmlParserOption(s)
|
|
*
|
|
* parse an XML in-memory document and build a tree.
|
|
* This reuses the existing @ctxt parser context
|
|
*
|
|
* Returns the resulting document tree
|
|
*/
|
|
htmlDocPtr
|
|
htmlCtxtReadDoc(htmlParserCtxtPtr ctxt, const xmlChar * cur,
|
|
const char *URL, const char *encoding, int options)
|
|
{
|
|
xmlParserInputPtr stream;
|
|
|
|
if (cur == NULL)
|
|
return (NULL);
|
|
if (ctxt == NULL)
|
|
return (NULL);
|
|
xmlInitParser();
|
|
|
|
htmlCtxtReset(ctxt);
|
|
|
|
stream = xmlNewStringInputStream(ctxt, cur);
|
|
if (stream == NULL) {
|
|
return (NULL);
|
|
}
|
|
inputPush(ctxt, stream);
|
|
return (htmlDoRead(ctxt, URL, encoding, options, 1));
|
|
}
|
|
|
|
/**
|
|
* htmlCtxtReadFile:
|
|
* @ctxt: an HTML parser context
|
|
* @filename: a file or URL
|
|
* @encoding: the document encoding, or NULL
|
|
* @options: a combination of htmlParserOption(s)
|
|
*
|
|
* parse an XML file from the filesystem or the network.
|
|
* This reuses the existing @ctxt parser context
|
|
*
|
|
* Returns the resulting document tree
|
|
*/
|
|
htmlDocPtr
|
|
htmlCtxtReadFile(htmlParserCtxtPtr ctxt, const char *filename,
|
|
const char *encoding, int options)
|
|
{
|
|
xmlParserInputPtr stream;
|
|
|
|
if (filename == NULL)
|
|
return (NULL);
|
|
if (ctxt == NULL)
|
|
return (NULL);
|
|
xmlInitParser();
|
|
|
|
htmlCtxtReset(ctxt);
|
|
|
|
stream = xmlLoadExternalEntity(filename, NULL, ctxt);
|
|
if (stream == NULL) {
|
|
return (NULL);
|
|
}
|
|
inputPush(ctxt, stream);
|
|
return (htmlDoRead(ctxt, NULL, encoding, options, 1));
|
|
}
|
|
|
|
/**
|
|
* htmlCtxtReadMemory:
|
|
* @ctxt: an HTML parser context
|
|
* @buffer: a pointer to a char array
|
|
* @size: the size of the array
|
|
* @URL: the base URL to use for the document
|
|
* @encoding: the document encoding, or NULL
|
|
* @options: a combination of htmlParserOption(s)
|
|
*
|
|
* parse an XML in-memory document and build a tree.
|
|
* This reuses the existing @ctxt parser context
|
|
*
|
|
* Returns the resulting document tree
|
|
*/
|
|
htmlDocPtr
|
|
htmlCtxtReadMemory(htmlParserCtxtPtr ctxt, const char *buffer, int size,
|
|
const char *URL, const char *encoding, int options)
|
|
{
|
|
xmlParserInputBufferPtr input;
|
|
xmlParserInputPtr stream;
|
|
|
|
if (ctxt == NULL)
|
|
return (NULL);
|
|
if (buffer == NULL)
|
|
return (NULL);
|
|
xmlInitParser();
|
|
|
|
htmlCtxtReset(ctxt);
|
|
|
|
input = xmlParserInputBufferCreateMem(buffer, size, XML_CHAR_ENCODING_NONE);
|
|
if (input == NULL) {
|
|
return(NULL);
|
|
}
|
|
|
|
stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
|
|
if (stream == NULL) {
|
|
xmlFreeParserInputBuffer(input);
|
|
return(NULL);
|
|
}
|
|
|
|
inputPush(ctxt, stream);
|
|
return (htmlDoRead(ctxt, URL, encoding, options, 1));
|
|
}
|
|
|
|
/**
|
|
* htmlCtxtReadFd:
|
|
* @ctxt: an HTML parser context
|
|
* @fd: an open file descriptor
|
|
* @URL: the base URL to use for the document
|
|
* @encoding: the document encoding, or NULL
|
|
* @options: a combination of htmlParserOption(s)
|
|
*
|
|
* parse an XML from a file descriptor and build a tree.
|
|
* This reuses the existing @ctxt parser context
|
|
*
|
|
* Returns the resulting document tree
|
|
*/
|
|
htmlDocPtr
|
|
htmlCtxtReadFd(htmlParserCtxtPtr ctxt, int fd,
|
|
const char *URL, const char *encoding, int options)
|
|
{
|
|
xmlParserInputBufferPtr input;
|
|
xmlParserInputPtr stream;
|
|
|
|
if (fd < 0)
|
|
return (NULL);
|
|
if (ctxt == NULL)
|
|
return (NULL);
|
|
xmlInitParser();
|
|
|
|
htmlCtxtReset(ctxt);
|
|
|
|
|
|
input = xmlParserInputBufferCreateFd(fd, XML_CHAR_ENCODING_NONE);
|
|
if (input == NULL)
|
|
return (NULL);
|
|
stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
|
|
if (stream == NULL) {
|
|
xmlFreeParserInputBuffer(input);
|
|
return (NULL);
|
|
}
|
|
inputPush(ctxt, stream);
|
|
return (htmlDoRead(ctxt, URL, encoding, options, 1));
|
|
}
|
|
|
|
/**
|
|
* htmlCtxtReadIO:
|
|
* @ctxt: an HTML parser context
|
|
* @ioread: an I/O read function
|
|
* @ioclose: an I/O close function
|
|
* @ioctx: an I/O handler
|
|
* @URL: the base URL to use for the document
|
|
* @encoding: the document encoding, or NULL
|
|
* @options: a combination of htmlParserOption(s)
|
|
*
|
|
* parse an HTML document from I/O functions and source and build a tree.
|
|
* This reuses the existing @ctxt parser context
|
|
*
|
|
* Returns the resulting document tree
|
|
*/
|
|
htmlDocPtr
|
|
htmlCtxtReadIO(htmlParserCtxtPtr ctxt, xmlInputReadCallback ioread,
|
|
xmlInputCloseCallback ioclose, void *ioctx,
|
|
const char *URL,
|
|
const char *encoding, int options)
|
|
{
|
|
xmlParserInputBufferPtr input;
|
|
xmlParserInputPtr stream;
|
|
|
|
if (ioread == NULL)
|
|
return (NULL);
|
|
if (ctxt == NULL)
|
|
return (NULL);
|
|
xmlInitParser();
|
|
|
|
htmlCtxtReset(ctxt);
|
|
|
|
input = xmlParserInputBufferCreateIO(ioread, ioclose, ioctx,
|
|
XML_CHAR_ENCODING_NONE);
|
|
if (input == NULL) {
|
|
if (ioclose != NULL)
|
|
ioclose(ioctx);
|
|
return (NULL);
|
|
}
|
|
stream = xmlNewIOInputStream(ctxt, input, XML_CHAR_ENCODING_NONE);
|
|
if (stream == NULL) {
|
|
xmlFreeParserInputBuffer(input);
|
|
return (NULL);
|
|
}
|
|
inputPush(ctxt, stream);
|
|
return (htmlDoRead(ctxt, URL, encoding, options, 1));
|
|
}
|
|
|
|
#define bottom_HTMLparser
|
|
#include "elfgcchack.h"
|
|
#endif /* LIBXML_HTML_ENABLED */
|