mirror of
https://gitlab.gnome.org/GNOME/libxml2.git
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320f5084cd
Make sure that xmlCharEncInput, xmlParserInputBufferPush and xmlParserInputBufferGrow set the correct error code in the xmlParserInputBuffer. Handle errors when calling these functions.
2441 lines
70 KiB
C
2441 lines
70 KiB
C
/*
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* parserInternals.c : Internal routines (and obsolete ones) needed for the
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* XML and HTML parsers.
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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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#if defined(_WIN32)
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#define XML_DIR_SEP '\\'
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#else
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#define XML_DIR_SEP '/'
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#endif
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#include <string.h>
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#include <ctype.h>
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#include <stdlib.h>
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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/valid.h>
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#include <libxml/entities.h>
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#include <libxml/xmlerror.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/uri.h>
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#include <libxml/dict.h>
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#include <libxml/SAX.h>
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#ifdef LIBXML_CATALOG_ENABLED
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#include <libxml/catalog.h>
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#endif
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#include <libxml/globals.h>
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#include <libxml/chvalid.h>
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#define CUR(ctxt) ctxt->input->cur
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#define END(ctxt) ctxt->input->end
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#define VALID_CTXT(ctxt) (CUR(ctxt) <= END(ctxt))
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#include "private/buf.h"
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#include "private/enc.h"
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#include "private/error.h"
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#include "private/io.h"
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#include "private/parser.h"
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/*
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* Various global defaults for parsing
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*/
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/**
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* xmlCheckVersion:
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* @version: the include version number
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*
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* check the compiled lib version against the include one.
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* This can warn or immediately kill the application
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*/
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void
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xmlCheckVersion(int version) {
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int myversion = LIBXML_VERSION;
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xmlInitParser();
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if ((myversion / 10000) != (version / 10000)) {
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xmlGenericError(xmlGenericErrorContext,
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"Fatal: program compiled against libxml %d using libxml %d\n",
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(version / 10000), (myversion / 10000));
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fprintf(stderr,
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"Fatal: program compiled against libxml %d using libxml %d\n",
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(version / 10000), (myversion / 10000));
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}
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if ((myversion / 100) < (version / 100)) {
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xmlGenericError(xmlGenericErrorContext,
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"Warning: program compiled against libxml %d using older %d\n",
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(version / 100), (myversion / 100));
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}
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}
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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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* xmlErrMemory:
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* @ctxt: an XML 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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void
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xmlErrMemory(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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* __xmlErrEncoding:
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* @ctxt: an XML parser context
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* @xmlerr: the error number
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* @msg: the error message
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* @str1: an string info
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* @str2: an string info
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*
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* Handle an encoding error
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*/
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void
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__xmlErrEncoding(xmlParserCtxtPtr ctxt, xmlParserErrors xmlerr,
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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 = xmlerr;
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__xmlRaiseError(NULL, NULL, NULL,
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ctxt, NULL, XML_FROM_PARSER, xmlerr, XML_ERR_FATAL,
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NULL, 0, (const char *) str1, (const char *) str2,
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NULL, 0, 0, msg, str1, str2);
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if (ctxt != NULL) {
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ctxt->wellFormed = 0;
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if (ctxt->recovery == 0)
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ctxt->disableSAX = 1;
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}
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}
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/**
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* xmlErrInternal:
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* @ctxt: an XML parser context
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* @msg: the error message
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* @str: error information
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*
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* Handle an internal error
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*/
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static void LIBXML_ATTR_FORMAT(2,0)
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xmlErrInternal(xmlParserCtxtPtr ctxt, const char *msg, const xmlChar * str)
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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_INTERNAL_ERROR;
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__xmlRaiseError(NULL, NULL, NULL,
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ctxt, NULL, XML_FROM_PARSER, XML_ERR_INTERNAL_ERROR,
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XML_ERR_FATAL, NULL, 0, (const char *) str, NULL, NULL,
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0, 0, msg, str);
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if (ctxt != NULL) {
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ctxt->wellFormed = 0;
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if (ctxt->recovery == 0)
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ctxt->disableSAX = 1;
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}
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}
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/**
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* xmlFatalErr:
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* @ctxt: an XML parser context
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* @error: the error number
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* @extra: extra information string
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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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void
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xmlFatalErr(xmlParserCtxtPtr ctxt, xmlParserErrors error, const char *info)
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{
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const char *errmsg;
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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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switch (error) {
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case XML_ERR_INVALID_HEX_CHARREF:
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errmsg = "CharRef: invalid hexadecimal value";
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break;
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case XML_ERR_INVALID_DEC_CHARREF:
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errmsg = "CharRef: invalid decimal value";
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break;
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case XML_ERR_INVALID_CHARREF:
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errmsg = "CharRef: invalid value";
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break;
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case XML_ERR_INTERNAL_ERROR:
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errmsg = "internal error";
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break;
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case XML_ERR_PEREF_AT_EOF:
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errmsg = "PEReference at end of document";
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break;
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case XML_ERR_PEREF_IN_PROLOG:
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errmsg = "PEReference in prolog";
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break;
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case XML_ERR_PEREF_IN_EPILOG:
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errmsg = "PEReference in epilog";
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break;
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case XML_ERR_PEREF_NO_NAME:
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errmsg = "PEReference: no name";
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break;
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case XML_ERR_PEREF_SEMICOL_MISSING:
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errmsg = "PEReference: expecting ';'";
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break;
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case XML_ERR_ENTITY_LOOP:
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errmsg = "Detected an entity reference loop";
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break;
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case XML_ERR_ENTITY_NOT_STARTED:
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errmsg = "EntityValue: \" or ' expected";
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break;
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case XML_ERR_ENTITY_PE_INTERNAL:
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errmsg = "PEReferences forbidden in internal subset";
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break;
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case XML_ERR_ENTITY_NOT_FINISHED:
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errmsg = "EntityValue: \" or ' expected";
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break;
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case XML_ERR_ATTRIBUTE_NOT_STARTED:
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errmsg = "AttValue: \" or ' expected";
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break;
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case XML_ERR_LT_IN_ATTRIBUTE:
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errmsg = "Unescaped '<' not allowed in attributes values";
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break;
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case XML_ERR_LITERAL_NOT_STARTED:
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errmsg = "SystemLiteral \" or ' expected";
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break;
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case XML_ERR_LITERAL_NOT_FINISHED:
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errmsg = "Unfinished System or Public ID \" or ' expected";
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break;
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case XML_ERR_MISPLACED_CDATA_END:
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errmsg = "Sequence ']]>' not allowed in content";
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break;
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case XML_ERR_URI_REQUIRED:
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errmsg = "SYSTEM or PUBLIC, the URI is missing";
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break;
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case XML_ERR_PUBID_REQUIRED:
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errmsg = "PUBLIC, the Public Identifier is missing";
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break;
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case XML_ERR_HYPHEN_IN_COMMENT:
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errmsg = "Comment must not contain '--' (double-hyphen)";
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break;
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case XML_ERR_PI_NOT_STARTED:
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errmsg = "xmlParsePI : no target name";
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break;
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case XML_ERR_RESERVED_XML_NAME:
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errmsg = "Invalid PI name";
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break;
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case XML_ERR_NOTATION_NOT_STARTED:
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errmsg = "NOTATION: Name expected here";
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break;
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case XML_ERR_NOTATION_NOT_FINISHED:
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errmsg = "'>' required to close NOTATION declaration";
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break;
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case XML_ERR_VALUE_REQUIRED:
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errmsg = "Entity value required";
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break;
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case XML_ERR_URI_FRAGMENT:
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errmsg = "Fragment not allowed";
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break;
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case XML_ERR_ATTLIST_NOT_STARTED:
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errmsg = "'(' required to start ATTLIST enumeration";
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break;
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case XML_ERR_NMTOKEN_REQUIRED:
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errmsg = "NmToken expected in ATTLIST enumeration";
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break;
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case XML_ERR_ATTLIST_NOT_FINISHED:
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errmsg = "')' required to finish ATTLIST enumeration";
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break;
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case XML_ERR_MIXED_NOT_STARTED:
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errmsg = "MixedContentDecl : '|' or ')*' expected";
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break;
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case XML_ERR_PCDATA_REQUIRED:
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errmsg = "MixedContentDecl : '#PCDATA' expected";
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break;
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case XML_ERR_ELEMCONTENT_NOT_STARTED:
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errmsg = "ContentDecl : Name or '(' expected";
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break;
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case XML_ERR_ELEMCONTENT_NOT_FINISHED:
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errmsg = "ContentDecl : ',' '|' or ')' expected";
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break;
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case XML_ERR_PEREF_IN_INT_SUBSET:
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errmsg =
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"PEReference: forbidden within markup decl in internal subset";
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break;
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case XML_ERR_GT_REQUIRED:
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errmsg = "expected '>'";
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break;
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case XML_ERR_CONDSEC_INVALID:
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errmsg = "XML conditional section '[' expected";
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break;
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case XML_ERR_EXT_SUBSET_NOT_FINISHED:
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errmsg = "Content error in the external subset";
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break;
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case XML_ERR_CONDSEC_INVALID_KEYWORD:
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errmsg =
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"conditional section INCLUDE or IGNORE keyword expected";
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break;
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case XML_ERR_CONDSEC_NOT_FINISHED:
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errmsg = "XML conditional section not closed";
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break;
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case XML_ERR_XMLDECL_NOT_STARTED:
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errmsg = "Text declaration '<?xml' required";
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break;
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case XML_ERR_XMLDECL_NOT_FINISHED:
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errmsg = "parsing XML declaration: '?>' expected";
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break;
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case XML_ERR_EXT_ENTITY_STANDALONE:
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errmsg = "external parsed entities cannot be standalone";
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break;
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case XML_ERR_ENTITYREF_SEMICOL_MISSING:
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errmsg = "EntityRef: expecting ';'";
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break;
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case XML_ERR_DOCTYPE_NOT_FINISHED:
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errmsg = "DOCTYPE improperly terminated";
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break;
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case XML_ERR_LTSLASH_REQUIRED:
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errmsg = "EndTag: '</' not found";
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break;
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case XML_ERR_EQUAL_REQUIRED:
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errmsg = "expected '='";
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break;
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case XML_ERR_STRING_NOT_CLOSED:
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errmsg = "String not closed expecting \" or '";
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break;
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case XML_ERR_STRING_NOT_STARTED:
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errmsg = "String not started expecting ' or \"";
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break;
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case XML_ERR_ENCODING_NAME:
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errmsg = "Invalid XML encoding name";
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break;
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case XML_ERR_STANDALONE_VALUE:
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errmsg = "standalone accepts only 'yes' or 'no'";
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break;
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case XML_ERR_DOCUMENT_EMPTY:
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errmsg = "Document is empty";
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break;
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case XML_ERR_DOCUMENT_END:
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errmsg = "Extra content at the end of the document";
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break;
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case XML_ERR_NOT_WELL_BALANCED:
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errmsg = "chunk is not well balanced";
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break;
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case XML_ERR_EXTRA_CONTENT:
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errmsg = "extra content at the end of well balanced chunk";
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break;
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case XML_ERR_VERSION_MISSING:
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errmsg = "Malformed declaration expecting version";
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break;
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case XML_ERR_NAME_TOO_LONG:
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errmsg = "Name too long";
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break;
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case XML_ERR_INVALID_ENCODING:
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errmsg = "Invalid bytes in character encoding";
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break;
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case XML_IO_UNKNOWN:
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errmsg = "I/O error";
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break;
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#if 0
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case:
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errmsg = "";
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break;
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#endif
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default:
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errmsg = "Unregistered error message";
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}
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if (ctxt != NULL)
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ctxt->errNo = error;
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if (info == NULL) {
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__xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, error,
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XML_ERR_FATAL, NULL, 0, info, NULL, NULL, 0, 0, "%s\n",
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errmsg);
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} else {
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__xmlRaiseError(NULL, NULL, NULL, ctxt, NULL, XML_FROM_PARSER, error,
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XML_ERR_FATAL, NULL, 0, info, NULL, NULL, 0, 0, "%s: %s\n",
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errmsg, info);
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}
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if (ctxt != NULL) {
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ctxt->wellFormed = 0;
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if (ctxt->recovery == 0)
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ctxt->disableSAX = 1;
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}
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}
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/**
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* xmlErrEncodingInt:
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* @ctxt: an XML parser context
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* @error: the error number
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* @msg: the error message
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* @val: an integer value
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*
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* n encoding error
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*/
|
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static void LIBXML_ATTR_FORMAT(3,0)
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xmlErrEncodingInt(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,
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ctxt, NULL, XML_FROM_PARSER, error, XML_ERR_FATAL,
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NULL, 0, NULL, NULL, NULL, val, 0, msg, val);
|
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if (ctxt != NULL) {
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ctxt->wellFormed = 0;
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if (ctxt->recovery == 0)
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ctxt->disableSAX = 1;
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}
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}
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|
|
/**
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|
* xmlIsLetter:
|
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* @c: an unicode character (int)
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|
*
|
|
* Check whether the character is allowed by the production
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|
* [84] Letter ::= BaseChar | Ideographic
|
|
*
|
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* Returns 0 if not, non-zero otherwise
|
|
*/
|
|
int
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xmlIsLetter(int c) {
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return(IS_BASECHAR(c) || IS_IDEOGRAPHIC(c));
|
|
}
|
|
|
|
/************************************************************************
|
|
* *
|
|
* Input handling functions for progressive parsing *
|
|
* *
|
|
************************************************************************/
|
|
|
|
/* #define DEBUG_INPUT */
|
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/* #define DEBUG_STACK */
|
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/* #define DEBUG_PUSH */
|
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|
|
|
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/* we need to keep enough input to show errors in context */
|
|
#define LINE_LEN 80
|
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|
|
#ifdef DEBUG_INPUT
|
|
#define CHECK_BUFFER(in) check_buffer(in)
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|
|
|
static
|
|
void check_buffer(xmlParserInputPtr in) {
|
|
if (in->base != xmlBufContent(in->buf->buffer)) {
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xmlGenericError(xmlGenericErrorContext,
|
|
"xmlParserInput: base mismatch problem\n");
|
|
}
|
|
if (in->cur < in->base) {
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlParserInput: cur < base problem\n");
|
|
}
|
|
if (in->cur > in->base + xmlBufUse(in->buf->buffer)) {
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"xmlParserInput: cur > base + use problem\n");
|
|
}
|
|
xmlGenericError(xmlGenericErrorContext,"buffer %p : content %x, cur %d, use %d\n",
|
|
(void *) in, (int) xmlBufContent(in->buf->buffer),
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in->cur - in->base, xmlBufUse(in->buf->buffer));
|
|
}
|
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|
|
#else
|
|
#define CHECK_BUFFER(in)
|
|
#endif
|
|
|
|
|
|
/**
|
|
* xmlHaltParser:
|
|
* @ctxt: an XML parser context
|
|
*
|
|
* Blocks further parser processing don't override error
|
|
* for internal use
|
|
*/
|
|
void
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xmlHaltParser(xmlParserCtxtPtr ctxt) {
|
|
if (ctxt == NULL)
|
|
return;
|
|
ctxt->instate = XML_PARSER_EOF;
|
|
ctxt->disableSAX = 1;
|
|
while (ctxt->inputNr > 1)
|
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xmlFreeInputStream(inputPop(ctxt));
|
|
if (ctxt->input != NULL) {
|
|
/*
|
|
* in case there was a specific allocation deallocate before
|
|
* overriding base
|
|
*/
|
|
if (ctxt->input->free != NULL) {
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|
ctxt->input->free((xmlChar *) ctxt->input->base);
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|
ctxt->input->free = NULL;
|
|
}
|
|
if (ctxt->input->buf != NULL) {
|
|
xmlFreeParserInputBuffer(ctxt->input->buf);
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|
ctxt->input->buf = NULL;
|
|
}
|
|
ctxt->input->cur = BAD_CAST"";
|
|
ctxt->input->length = 0;
|
|
ctxt->input->base = ctxt->input->cur;
|
|
ctxt->input->end = ctxt->input->cur;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* xmlParserInputRead:
|
|
* @in: an XML parser input
|
|
* @len: an indicative size for the lookahead
|
|
*
|
|
* DEPRECATED: This function was internal and is deprecated.
|
|
*
|
|
* Returns -1 as this is an error to use it.
|
|
*/
|
|
int
|
|
xmlParserInputRead(xmlParserInputPtr in ATTRIBUTE_UNUSED, int len ATTRIBUTE_UNUSED) {
|
|
return(-1);
|
|
}
|
|
|
|
/**
|
|
* xmlParserGrow:
|
|
* @ctxt: an XML parser context
|
|
*/
|
|
int
|
|
xmlParserGrow(xmlParserCtxtPtr ctxt) {
|
|
xmlParserInputPtr in = ctxt->input;
|
|
xmlParserInputBufferPtr buf = in->buf;
|
|
ptrdiff_t curEnd = in->end - in->cur;
|
|
ptrdiff_t curBase = in->cur - in->base;
|
|
int ret;
|
|
|
|
if (buf == NULL)
|
|
return(0);
|
|
/* Don't grow push parser buffer. */
|
|
if (ctxt->progressive)
|
|
return(0);
|
|
/* Don't grow memory buffers. */
|
|
if ((buf->encoder == NULL) && (buf->readcallback == NULL))
|
|
return(0);
|
|
|
|
if (((curEnd > XML_MAX_LOOKUP_LIMIT) ||
|
|
(curBase > XML_MAX_LOOKUP_LIMIT)) &&
|
|
((ctxt->options & XML_PARSE_HUGE) == 0)) {
|
|
xmlErrMemory(ctxt, "Huge input lookup");
|
|
xmlHaltParser(ctxt);
|
|
return(-1);
|
|
}
|
|
|
|
if (curEnd >= INPUT_CHUNK)
|
|
return(0);
|
|
|
|
ret = xmlParserInputBufferGrow(buf, INPUT_CHUNK);
|
|
xmlBufSetInputBaseCur(buf->buffer, in, 0, curBase);
|
|
|
|
if (ret < 0) {
|
|
xmlFatalErr(ctxt, buf->error, NULL);
|
|
xmlHaltParser(ctxt);
|
|
}
|
|
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* xmlParserInputGrow:
|
|
* @in: an XML parser input
|
|
* @len: an indicative size for the lookahead
|
|
*
|
|
* DEPRECATED: Don't use.
|
|
*
|
|
* This function increase the input for the parser. It tries to
|
|
* preserve pointers to the input buffer, and keep already read data
|
|
*
|
|
* Returns the amount of char read, or -1 in case of error, 0 indicate the
|
|
* end of this entity
|
|
*/
|
|
int
|
|
xmlParserInputGrow(xmlParserInputPtr in, int len) {
|
|
int ret;
|
|
size_t indx;
|
|
|
|
if ((in == NULL) || (len < 0)) return(-1);
|
|
#ifdef DEBUG_INPUT
|
|
xmlGenericError(xmlGenericErrorContext, "Grow\n");
|
|
#endif
|
|
if (in->buf == NULL) return(-1);
|
|
if (in->base == NULL) return(-1);
|
|
if (in->cur == NULL) return(-1);
|
|
if (in->buf->buffer == NULL) return(-1);
|
|
|
|
/* Don't grow memory buffers. */
|
|
if ((in->buf->encoder == NULL) && (in->buf->readcallback == NULL))
|
|
return(0);
|
|
|
|
CHECK_BUFFER(in);
|
|
|
|
indx = in->cur - in->base;
|
|
if (xmlBufUse(in->buf->buffer) > (unsigned int) indx + INPUT_CHUNK) {
|
|
|
|
CHECK_BUFFER(in);
|
|
|
|
return(0);
|
|
}
|
|
ret = xmlParserInputBufferGrow(in->buf, len);
|
|
|
|
in->base = xmlBufContent(in->buf->buffer);
|
|
if (in->base == NULL) {
|
|
in->base = BAD_CAST "";
|
|
in->cur = in->base;
|
|
in->end = in->base;
|
|
return(-1);
|
|
}
|
|
in->cur = in->base + indx;
|
|
in->end = xmlBufEnd(in->buf->buffer);
|
|
|
|
CHECK_BUFFER(in);
|
|
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* xmlParserShrink:
|
|
* @ctxt: an XML parser context
|
|
*/
|
|
void
|
|
xmlParserShrink(xmlParserCtxtPtr ctxt) {
|
|
xmlParserInputPtr in = ctxt->input;
|
|
xmlParserInputBufferPtr buf = in->buf;
|
|
size_t used;
|
|
|
|
/* Don't shrink memory buffers. */
|
|
if ((buf == NULL) ||
|
|
((buf->encoder == NULL) && (buf->readcallback == NULL)))
|
|
return;
|
|
|
|
used = in->cur - in->base;
|
|
/*
|
|
* Do not shrink on large buffers whose only a tiny fraction
|
|
* was consumed
|
|
*/
|
|
if (used > INPUT_CHUNK) {
|
|
size_t res = xmlBufShrink(buf->buffer, used - LINE_LEN);
|
|
|
|
if (res > 0) {
|
|
used -= res;
|
|
if ((res > ULONG_MAX) ||
|
|
(in->consumed > ULONG_MAX - (unsigned long)res))
|
|
in->consumed = ULONG_MAX;
|
|
else
|
|
in->consumed += res;
|
|
}
|
|
}
|
|
|
|
xmlBufSetInputBaseCur(buf->buffer, in, 0, used);
|
|
}
|
|
|
|
/**
|
|
* xmlParserInputShrink:
|
|
* @in: an XML parser input
|
|
*
|
|
* DEPRECATED: Don't use.
|
|
*
|
|
* This function removes used input for the parser.
|
|
*/
|
|
void
|
|
xmlParserInputShrink(xmlParserInputPtr in) {
|
|
size_t used;
|
|
size_t ret;
|
|
|
|
#ifdef DEBUG_INPUT
|
|
xmlGenericError(xmlGenericErrorContext, "Shrink\n");
|
|
#endif
|
|
if (in == NULL) return;
|
|
if (in->buf == NULL) return;
|
|
if (in->base == NULL) return;
|
|
if (in->cur == NULL) return;
|
|
if (in->buf->buffer == NULL) return;
|
|
|
|
CHECK_BUFFER(in);
|
|
|
|
used = in->cur - in->base;
|
|
/*
|
|
* Do not shrink on large buffers whose only a tiny fraction
|
|
* was consumed
|
|
*/
|
|
if (used > INPUT_CHUNK) {
|
|
ret = xmlBufShrink(in->buf->buffer, used - LINE_LEN);
|
|
if (ret > 0) {
|
|
used -= ret;
|
|
if ((ret > ULONG_MAX) ||
|
|
(in->consumed > ULONG_MAX - (unsigned long)ret))
|
|
in->consumed = ULONG_MAX;
|
|
else
|
|
in->consumed += ret;
|
|
}
|
|
}
|
|
|
|
if (xmlBufUse(in->buf->buffer) <= INPUT_CHUNK) {
|
|
xmlParserInputBufferRead(in->buf, 2 * INPUT_CHUNK);
|
|
}
|
|
|
|
in->base = xmlBufContent(in->buf->buffer);
|
|
if (in->base == NULL) {
|
|
/* TODO: raise error */
|
|
in->base = BAD_CAST "";
|
|
in->cur = in->base;
|
|
in->end = in->base;
|
|
return;
|
|
}
|
|
in->cur = in->base + used;
|
|
in->end = xmlBufEnd(in->buf->buffer);
|
|
|
|
CHECK_BUFFER(in);
|
|
}
|
|
|
|
/************************************************************************
|
|
* *
|
|
* UTF8 character input and related functions *
|
|
* *
|
|
************************************************************************/
|
|
|
|
/**
|
|
* xmlNextChar:
|
|
* @ctxt: the XML parser context
|
|
*
|
|
* DEPRECATED: Internal function, do not use.
|
|
*
|
|
* Skip to the next char input char.
|
|
*/
|
|
|
|
void
|
|
xmlNextChar(xmlParserCtxtPtr ctxt)
|
|
{
|
|
if ((ctxt == NULL) || (ctxt->instate == XML_PARSER_EOF) ||
|
|
(ctxt->input == NULL))
|
|
return;
|
|
|
|
if (!(VALID_CTXT(ctxt))) {
|
|
xmlErrInternal(ctxt, "Parser input data memory error\n", NULL);
|
|
ctxt->errNo = XML_ERR_INTERNAL_ERROR;
|
|
xmlStopParser(ctxt);
|
|
return;
|
|
}
|
|
|
|
if (ctxt->input->end - ctxt->input->cur < INPUT_CHUNK) {
|
|
if (xmlParserGrow(ctxt) < 0)
|
|
return;
|
|
if (ctxt->input->cur >= ctxt->input->end)
|
|
return;
|
|
}
|
|
|
|
if (ctxt->charset == XML_CHAR_ENCODING_UTF8) {
|
|
const unsigned char *cur;
|
|
unsigned char c;
|
|
|
|
/*
|
|
* 2.11 End-of-Line Handling
|
|
* the literal two-character sequence "#xD#xA" or a standalone
|
|
* literal #xD, an XML processor must pass to the application
|
|
* the single character #xA.
|
|
*/
|
|
if (*(ctxt->input->cur) == '\n') {
|
|
ctxt->input->line++; ctxt->input->col = 1;
|
|
} else
|
|
ctxt->input->col++;
|
|
|
|
/*
|
|
* 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) {
|
|
size_t avail;
|
|
|
|
if (c == 0xC0)
|
|
goto encoding_error;
|
|
|
|
avail = ctxt->input->end - ctxt->input->cur;
|
|
|
|
if ((avail < 2) || (cur[1] & 0xc0) != 0x80)
|
|
goto encoding_error;
|
|
if ((c & 0xe0) == 0xe0) {
|
|
unsigned int val;
|
|
|
|
if ((avail < 3) || (cur[2] & 0xc0) != 0x80)
|
|
goto encoding_error;
|
|
if ((c & 0xf0) == 0xf0) {
|
|
if (((c & 0xf8) != 0xf0) ||
|
|
(avail < 4) || ((cur[3] & 0xc0) != 0x80))
|
|
goto encoding_error;
|
|
/* 4-byte code */
|
|
ctxt->input->cur += 4;
|
|
val = (cur[0] & 0x7) << 18;
|
|
val |= (cur[1] & 0x3f) << 12;
|
|
val |= (cur[2] & 0x3f) << 6;
|
|
val |= cur[3] & 0x3f;
|
|
} else {
|
|
/* 3-byte code */
|
|
ctxt->input->cur += 3;
|
|
val = (cur[0] & 0xf) << 12;
|
|
val |= (cur[1] & 0x3f) << 6;
|
|
val |= cur[2] & 0x3f;
|
|
}
|
|
if (((val > 0xd7ff) && (val < 0xe000)) ||
|
|
((val > 0xfffd) && (val < 0x10000)) ||
|
|
(val >= 0x110000)) {
|
|
xmlErrEncodingInt(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Char 0x%X out of allowed range\n",
|
|
val);
|
|
}
|
|
} else
|
|
/* 2-byte code */
|
|
ctxt->input->cur += 2;
|
|
} else
|
|
/* 1-byte code */
|
|
ctxt->input->cur++;
|
|
} else {
|
|
/*
|
|
* Assume it's a fixed length encoding (1) with
|
|
* a compatible encoding for the ASCII set, since
|
|
* XML constructs only use < 128 chars
|
|
*/
|
|
|
|
if (*(ctxt->input->cur) == '\n') {
|
|
ctxt->input->line++; ctxt->input->col = 1;
|
|
} else
|
|
ctxt->input->col++;
|
|
ctxt->input->cur++;
|
|
}
|
|
return;
|
|
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 !)
|
|
*/
|
|
if ((ctxt == NULL) || (ctxt->input == NULL) ||
|
|
(ctxt->input->end - ctxt->input->cur < 4)) {
|
|
__xmlErrEncoding(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Input is not proper UTF-8, indicate encoding !\n",
|
|
NULL, NULL);
|
|
} else {
|
|
char buffer[150];
|
|
|
|
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]);
|
|
__xmlErrEncoding(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Input is not proper UTF-8, indicate encoding !\n%s",
|
|
BAD_CAST buffer, NULL);
|
|
}
|
|
ctxt->charset = XML_CHAR_ENCODING_8859_1;
|
|
ctxt->input->cur++;
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* xmlCurrentChar:
|
|
* @ctxt: the XML parser context
|
|
* @len: pointer to the length of the char read
|
|
*
|
|
* DEPRECATED: Internal function, do not use.
|
|
*
|
|
* 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
|
|
* Wherever an external parsed entity or the literal entity value
|
|
* of an internal parsed entity contains either the literal two-character
|
|
* sequence "#xD#xA" or a standalone literal #xD, an XML processor
|
|
* must pass to the application the single character #xA.
|
|
* This behavior can conveniently be produced by normalizing all
|
|
* line breaks to #xA on input, before parsing.)
|
|
*
|
|
* Returns the current char value and its length
|
|
*/
|
|
|
|
int
|
|
xmlCurrentChar(xmlParserCtxtPtr ctxt, int *len) {
|
|
if ((ctxt == NULL) || (len == NULL) || (ctxt->input == NULL)) return(0);
|
|
if (ctxt->instate == XML_PARSER_EOF)
|
|
return(0);
|
|
|
|
if ((ctxt->input->end - ctxt->input->cur < INPUT_CHUNK) &&
|
|
(xmlParserGrow(ctxt) < 0))
|
|
return(0);
|
|
|
|
if ((*ctxt->input->cur >= 0x20) && (*ctxt->input->cur <= 0x7F)) {
|
|
*len = 1;
|
|
return(*ctxt->input->cur);
|
|
}
|
|
if (ctxt->charset == XML_CHAR_ENCODING_UTF8) {
|
|
/*
|
|
* We are supposed to handle UTF8, check it's valid
|
|
* From rfc2044: encoding of the Unicode values on UTF-8:
|
|
*
|
|
* UCS-4 range (hex.) UTF-8 octet sequence (binary)
|
|
* 0000 0000-0000 007F 0xxxxxxx
|
|
* 0000 0080-0000 07FF 110xxxxx 10xxxxxx
|
|
* 0000 0800-0000 FFFF 1110xxxx 10xxxxxx 10xxxxxx
|
|
*
|
|
* Check for the 0x110000 limit too
|
|
*/
|
|
const unsigned char *cur = ctxt->input->cur;
|
|
unsigned char c;
|
|
unsigned int val;
|
|
|
|
c = *cur;
|
|
if (c & 0x80) {
|
|
size_t avail;
|
|
|
|
if (((c & 0x40) == 0) || (c == 0xC0))
|
|
goto encoding_error;
|
|
|
|
avail = ctxt->input->end - ctxt->input->cur;
|
|
|
|
if ((avail < 2) || (cur[1] & 0xc0) != 0x80)
|
|
goto encoding_error;
|
|
if ((c & 0xe0) == 0xe0) {
|
|
if ((avail < 3) || (cur[2] & 0xc0) != 0x80)
|
|
goto encoding_error;
|
|
if ((c & 0xf0) == 0xf0) {
|
|
if (((c & 0xf8) != 0xf0) ||
|
|
(avail < 4) || ((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)) {
|
|
xmlErrEncodingInt(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Char 0x%X out of allowed range\n", val);
|
|
}
|
|
return(val);
|
|
} else {
|
|
/* 1-byte code */
|
|
*len = 1;
|
|
if ((*ctxt->input->cur == 0) &&
|
|
(ctxt->input->end > ctxt->input->cur)) {
|
|
xmlErrEncodingInt(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Char 0x0 out of allowed range\n", 0);
|
|
}
|
|
if (*ctxt->input->cur == 0xD) {
|
|
if (ctxt->input->cur[1] == 0xA) {
|
|
ctxt->input->cur++;
|
|
}
|
|
return(0xA);
|
|
}
|
|
return(*ctxt->input->cur);
|
|
}
|
|
}
|
|
/*
|
|
* Assume it's a fixed length encoding (1) with
|
|
* a compatible encoding for the ASCII set, since
|
|
* XML constructs only use < 128 chars
|
|
*/
|
|
*len = 1;
|
|
if (*ctxt->input->cur == 0xD) {
|
|
if (ctxt->input->cur[1] == 0xA) {
|
|
ctxt->input->cur++;
|
|
}
|
|
return(0xA);
|
|
}
|
|
return(*ctxt->input->cur);
|
|
encoding_error:
|
|
/*
|
|
* An encoding problem may arise from a truncated input buffer
|
|
* splitting a character in the middle. In that case do not raise
|
|
* an error but return 0 to indicate an end of stream problem
|
|
*/
|
|
if (ctxt->input->end - ctxt->input->cur < 4) {
|
|
*len = 0;
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* 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];
|
|
|
|
snprintf(&buffer[0], 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]);
|
|
__xmlErrEncoding(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Input is not proper UTF-8, indicate encoding !\n%s",
|
|
BAD_CAST buffer, NULL);
|
|
}
|
|
ctxt->charset = XML_CHAR_ENCODING_8859_1;
|
|
*len = 1;
|
|
return(*ctxt->input->cur);
|
|
}
|
|
|
|
/**
|
|
* xmlStringCurrentChar:
|
|
* @ctxt: the XML parser context
|
|
* @cur: pointer to the beginning of the char
|
|
* @len: pointer to the length of the char read
|
|
*
|
|
* DEPRECATED: Internal function, do not use.
|
|
*
|
|
* The current char value, if using UTF-8 this may actually span multiple
|
|
* bytes in the input buffer.
|
|
*
|
|
* Returns the current char value and its length
|
|
*/
|
|
|
|
int
|
|
xmlStringCurrentChar(xmlParserCtxtPtr ctxt, const xmlChar * cur, int *len)
|
|
{
|
|
if ((len == NULL) || (cur == NULL)) return(0);
|
|
if ((ctxt == 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
|
|
*/
|
|
unsigned char c;
|
|
unsigned int val;
|
|
|
|
c = *cur;
|
|
if (c & 0x80) {
|
|
if ((cur[1] & 0xc0) != 0x80)
|
|
goto encoding_error;
|
|
if ((c & 0xe0) == 0xe0) {
|
|
|
|
if ((cur[2] & 0xc0) != 0x80)
|
|
goto encoding_error;
|
|
if ((c & 0xf0) == 0xf0) {
|
|
if (((c & 0xf8) != 0xf0) || ((cur[3] & 0xc0) != 0x80))
|
|
goto encoding_error;
|
|
/* 4-byte code */
|
|
*len = 4;
|
|
val = (cur[0] & 0x7) << 18;
|
|
val |= (cur[1] & 0x3f) << 12;
|
|
val |= (cur[2] & 0x3f) << 6;
|
|
val |= cur[3] & 0x3f;
|
|
} else {
|
|
/* 3-byte code */
|
|
*len = 3;
|
|
val = (cur[0] & 0xf) << 12;
|
|
val |= (cur[1] & 0x3f) << 6;
|
|
val |= cur[2] & 0x3f;
|
|
}
|
|
} else {
|
|
/* 2-byte code */
|
|
*len = 2;
|
|
val = (cur[0] & 0x1f) << 6;
|
|
val |= cur[1] & 0x3f;
|
|
}
|
|
if (!IS_CHAR(val)) {
|
|
xmlErrEncodingInt(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Char 0x%X out of allowed range\n", val);
|
|
}
|
|
return (val);
|
|
} else {
|
|
/* 1-byte code */
|
|
*len = 1;
|
|
return (*cur);
|
|
}
|
|
}
|
|
/*
|
|
* Assume it's a fixed length encoding (1) with
|
|
* a compatible encoding for the ASCII set, since
|
|
* XML constructs only use < 128 chars
|
|
*/
|
|
*len = 1;
|
|
return (*cur);
|
|
encoding_error:
|
|
|
|
/*
|
|
* An encoding problem may arise from a truncated input buffer
|
|
* splitting a character in the middle. In that case do not raise
|
|
* an error but return 0 to indicate an end of stream problem
|
|
*/
|
|
if ((ctxt == NULL) || (ctxt->input == NULL) ||
|
|
(ctxt->input->end - ctxt->input->cur < 4)) {
|
|
*len = 0;
|
|
return(0);
|
|
}
|
|
/*
|
|
* 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];
|
|
|
|
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]);
|
|
__xmlErrEncoding(ctxt, XML_ERR_INVALID_CHAR,
|
|
"Input is not proper UTF-8, indicate encoding !\n%s",
|
|
BAD_CAST buffer, NULL);
|
|
}
|
|
*len = 1;
|
|
return (*cur);
|
|
}
|
|
|
|
/**
|
|
* xmlCopyCharMultiByte:
|
|
* @out: pointer to an array of xmlChar
|
|
* @val: the char value
|
|
*
|
|
* append the char value in the array
|
|
*
|
|
* Returns the number of xmlChar written
|
|
*/
|
|
int
|
|
xmlCopyCharMultiByte(xmlChar *out, int val) {
|
|
if ((out == NULL) || (val < 0)) return(0);
|
|
/*
|
|
* 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
|
|
*/
|
|
if (val >= 0x80) {
|
|
xmlChar *savedout = out;
|
|
int bits;
|
|
if (val < 0x800) { *out++= (val >> 6) | 0xC0; bits= 0; }
|
|
else if (val < 0x10000) { *out++= (val >> 12) | 0xE0; bits= 6;}
|
|
else if (val < 0x110000) { *out++= (val >> 18) | 0xF0; bits= 12; }
|
|
else {
|
|
xmlErrEncodingInt(NULL, XML_ERR_INVALID_CHAR,
|
|
"Internal error, xmlCopyCharMultiByte 0x%X out of bound\n",
|
|
val);
|
|
return(0);
|
|
}
|
|
for ( ; bits >= 0; bits-= 6)
|
|
*out++= ((val >> bits) & 0x3F) | 0x80 ;
|
|
return (out - savedout);
|
|
}
|
|
*out = val;
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* xmlCopyChar:
|
|
* @len: Ignored, compatibility
|
|
* @out: pointer to an array of xmlChar
|
|
* @val: the char value
|
|
*
|
|
* append the char value in the array
|
|
*
|
|
* Returns the number of xmlChar written
|
|
*/
|
|
|
|
int
|
|
xmlCopyChar(int len ATTRIBUTE_UNUSED, xmlChar *out, int val) {
|
|
if ((out == NULL) || (val < 0)) return(0);
|
|
/* the len parameter is ignored */
|
|
if (val >= 0x80) {
|
|
return(xmlCopyCharMultiByte (out, val));
|
|
}
|
|
*out = val;
|
|
return 1;
|
|
}
|
|
|
|
/************************************************************************
|
|
* *
|
|
* Commodity functions to switch encodings *
|
|
* *
|
|
************************************************************************/
|
|
|
|
static xmlCharEncodingHandlerPtr
|
|
xmlDetectEBCDIC(xmlParserInputPtr input) {
|
|
xmlChar out[200];
|
|
xmlCharEncodingHandlerPtr handler;
|
|
int inlen, outlen, res, i;
|
|
|
|
/*
|
|
* To detect the EBCDIC code page, we convert the first 200 bytes
|
|
* to EBCDIC-US and try to find the encoding declaration.
|
|
*/
|
|
handler = xmlGetCharEncodingHandler(XML_CHAR_ENCODING_EBCDIC);
|
|
if (handler == NULL)
|
|
return(NULL);
|
|
outlen = sizeof(out) - 1;
|
|
inlen = input->end - input->cur;
|
|
res = xmlEncInputChunk(handler, out, &outlen, input->cur, &inlen, 0);
|
|
if (res < 0)
|
|
return(handler);
|
|
out[outlen] = 0;
|
|
|
|
for (i = 0; i < outlen; i++) {
|
|
if (out[i] == '>')
|
|
break;
|
|
if ((out[i] == 'e') &&
|
|
(xmlStrncmp(out + i, BAD_CAST "encoding", 8) == 0)) {
|
|
int start, cur, quote;
|
|
|
|
i += 8;
|
|
while (IS_BLANK_CH(out[i]))
|
|
i += 1;
|
|
if (out[i++] != '=')
|
|
break;
|
|
while (IS_BLANK_CH(out[i]))
|
|
i += 1;
|
|
quote = out[i++];
|
|
if ((quote != '\'') && (quote != '"'))
|
|
break;
|
|
start = i;
|
|
cur = out[i];
|
|
while (((cur >= 'a') && (cur <= 'z')) ||
|
|
((cur >= 'A') && (cur <= 'Z')) ||
|
|
((cur >= '0') && (cur <= '9')) ||
|
|
(cur == '.') || (cur == '_') ||
|
|
(cur == '-'))
|
|
cur = out[++i];
|
|
if (cur != quote)
|
|
break;
|
|
out[i] = 0;
|
|
xmlCharEncCloseFunc(handler);
|
|
handler = xmlFindCharEncodingHandler((char *) out + start);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return(handler);
|
|
}
|
|
|
|
/**
|
|
* xmlSwitchEncoding:
|
|
* @ctxt: the parser context
|
|
* @enc: the encoding value (number)
|
|
*
|
|
* change the input functions when discovering the character encoding
|
|
* of a given entity.
|
|
*
|
|
* Returns 0 in case of success, -1 otherwise
|
|
*/
|
|
int
|
|
xmlSwitchEncoding(xmlParserCtxtPtr ctxt, xmlCharEncoding enc)
|
|
{
|
|
xmlCharEncodingHandlerPtr handler;
|
|
int ret;
|
|
|
|
if (ctxt == NULL) return(-1);
|
|
switch (enc) {
|
|
case XML_CHAR_ENCODING_ERROR:
|
|
__xmlErrEncoding(ctxt, XML_ERR_UNKNOWN_ENCODING,
|
|
"encoding unknown\n", NULL, NULL);
|
|
return(-1);
|
|
case XML_CHAR_ENCODING_NONE:
|
|
/* let's assume it's UTF-8 without the XML decl */
|
|
ctxt->charset = XML_CHAR_ENCODING_UTF8;
|
|
return(0);
|
|
case XML_CHAR_ENCODING_UTF8:
|
|
/* default encoding, no conversion should be needed */
|
|
ctxt->charset = XML_CHAR_ENCODING_UTF8;
|
|
|
|
/*
|
|
* Errata on XML-1.0 June 20 2001
|
|
* Specific handling of the Byte Order Mark for
|
|
* UTF-8
|
|
*/
|
|
if ((ctxt->input != NULL) &&
|
|
(ctxt->input->cur[0] == 0xEF) &&
|
|
(ctxt->input->cur[1] == 0xBB) &&
|
|
(ctxt->input->cur[2] == 0xBF)) {
|
|
ctxt->input->cur += 3;
|
|
}
|
|
return(0);
|
|
case XML_CHAR_ENCODING_EBCDIC:
|
|
handler = xmlDetectEBCDIC(ctxt->input);
|
|
break;
|
|
default:
|
|
handler = xmlGetCharEncodingHandler(enc);
|
|
break;
|
|
}
|
|
if (handler == NULL) {
|
|
/*
|
|
* Default handlers.
|
|
*/
|
|
switch (enc) {
|
|
case XML_CHAR_ENCODING_ASCII:
|
|
/* default encoding, no conversion should be needed */
|
|
ctxt->charset = XML_CHAR_ENCODING_UTF8;
|
|
return(0);
|
|
case XML_CHAR_ENCODING_8859_1:
|
|
if ((ctxt->inputNr == 1) &&
|
|
(ctxt->encoding == NULL) &&
|
|
(ctxt->input != NULL) &&
|
|
(ctxt->input->encoding != NULL)) {
|
|
ctxt->encoding = xmlStrdup(ctxt->input->encoding);
|
|
}
|
|
ctxt->charset = enc;
|
|
return(0);
|
|
default:
|
|
__xmlErrEncoding(ctxt, XML_ERR_UNSUPPORTED_ENCODING,
|
|
"encoding not supported: %s\n",
|
|
BAD_CAST xmlGetCharEncodingName(enc), NULL);
|
|
/*
|
|
* TODO: We could recover from errors in external entities
|
|
* if we didn't stop the parser. But most callers of this
|
|
* function don't check the return value.
|
|
*/
|
|
xmlStopParser(ctxt);
|
|
return(-1);
|
|
}
|
|
}
|
|
ret = xmlSwitchInputEncoding(ctxt, ctxt->input, handler);
|
|
if ((ret < 0) || (ctxt->errNo == XML_I18N_CONV_FAILED)) {
|
|
/*
|
|
* on encoding conversion errors, stop the parser
|
|
*/
|
|
xmlStopParser(ctxt);
|
|
ctxt->errNo = XML_I18N_CONV_FAILED;
|
|
}
|
|
return(ret);
|
|
}
|
|
|
|
/**
|
|
* xmlSwitchInputEncoding:
|
|
* @ctxt: the parser context
|
|
* @input: the input stream
|
|
* @handler: the encoding handler
|
|
*
|
|
* change the input functions when discovering the character encoding
|
|
* of a given entity.
|
|
*
|
|
* Returns 0 in case of success, -1 otherwise
|
|
*/
|
|
int
|
|
xmlSwitchInputEncoding(xmlParserCtxtPtr ctxt, xmlParserInputPtr input,
|
|
xmlCharEncodingHandlerPtr handler)
|
|
{
|
|
int nbchars;
|
|
xmlParserInputBufferPtr in;
|
|
|
|
if (handler == NULL)
|
|
return (-1);
|
|
if (input == NULL)
|
|
return (-1);
|
|
in = input->buf;
|
|
if (in == NULL) {
|
|
xmlErrInternal(ctxt,
|
|
"static memory buffer doesn't support encoding\n", NULL);
|
|
/*
|
|
* Callers assume that the input buffer takes ownership of the
|
|
* encoding handler. xmlCharEncCloseFunc frees unregistered
|
|
* handlers and avoids a memory leak.
|
|
*/
|
|
xmlCharEncCloseFunc(handler);
|
|
return (-1);
|
|
}
|
|
|
|
if (in->encoder != NULL) {
|
|
if (in->encoder == handler)
|
|
return (0);
|
|
|
|
/*
|
|
* Switching encodings during parsing is a really bad idea,
|
|
* but WebKit/Chromium switches from ISO-8859-1 to UTF-16 as soon as
|
|
* it finds Unicode characters with code points larger than 255.
|
|
*
|
|
* TODO: We should check whether the "raw" input buffer is empty and
|
|
* convert the old content using the old encoder.
|
|
*/
|
|
|
|
xmlCharEncCloseFunc(in->encoder);
|
|
in->encoder = handler;
|
|
return (0);
|
|
}
|
|
|
|
ctxt->charset = XML_CHAR_ENCODING_UTF8;
|
|
in->encoder = handler;
|
|
|
|
/*
|
|
* Is there already some content down the pipe to convert ?
|
|
*/
|
|
if (xmlBufIsEmpty(in->buffer) == 0) {
|
|
size_t processed, use, consumed;
|
|
|
|
/*
|
|
* Specific handling of the Byte Order Mark for
|
|
* UTF-16
|
|
*/
|
|
if ((handler->name != NULL) &&
|
|
(!strcmp(handler->name, "UTF-16LE") ||
|
|
!strcmp(handler->name, "UTF-16")) &&
|
|
(input->cur[0] == 0xFF) && (input->cur[1] == 0xFE)) {
|
|
input->cur += 2;
|
|
}
|
|
if ((handler->name != NULL) &&
|
|
(!strcmp(handler->name, "UTF-16BE")) &&
|
|
(input->cur[0] == 0xFE) && (input->cur[1] == 0xFF)) {
|
|
input->cur += 2;
|
|
}
|
|
/*
|
|
* Errata on XML-1.0 June 20 2001
|
|
* Specific handling of the Byte Order Mark for
|
|
* UTF-8
|
|
*/
|
|
if ((handler->name != NULL) &&
|
|
(!strcmp(handler->name, "UTF-8")) &&
|
|
(input->cur[0] == 0xEF) &&
|
|
(input->cur[1] == 0xBB) && (input->cur[2] == 0xBF)) {
|
|
input->cur += 3;
|
|
}
|
|
|
|
/*
|
|
* Shrink the current input buffer.
|
|
* Move it as the raw buffer and create a new input buffer
|
|
*/
|
|
processed = input->cur - input->base;
|
|
xmlBufShrink(in->buffer, processed);
|
|
input->consumed += processed;
|
|
in->raw = in->buffer;
|
|
in->buffer = xmlBufCreate();
|
|
in->rawconsumed = processed;
|
|
use = xmlBufUse(in->raw);
|
|
|
|
/*
|
|
* TODO: We must flush and decode the whole buffer to make functions
|
|
* like xmlReadMemory work with a user-provided encoding. If the
|
|
* encoding is specified directly, we should probably set
|
|
* XML_PARSE_IGNORE_ENC in xmlDoRead to avoid switching encodings
|
|
* twice. Then we could set "flush" to false which should save
|
|
* a considerable amount of memory when parsing from memory.
|
|
* It's probably even possible to remove this whole if-block
|
|
* completely.
|
|
*/
|
|
nbchars = xmlCharEncInput(in, 1);
|
|
xmlBufResetInput(in->buffer, input);
|
|
if (nbchars < 0) {
|
|
/* TODO: This could be an out of memory or an encoding error. */
|
|
xmlErrInternal(ctxt,
|
|
"switching encoding: encoder error\n",
|
|
NULL);
|
|
xmlHaltParser(ctxt);
|
|
return (-1);
|
|
}
|
|
consumed = use - xmlBufUse(in->raw);
|
|
if ((consumed > ULONG_MAX) ||
|
|
(in->rawconsumed > ULONG_MAX - (unsigned long)consumed))
|
|
in->rawconsumed = ULONG_MAX;
|
|
else
|
|
in->rawconsumed += consumed;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/**
|
|
* xmlSwitchToEncoding:
|
|
* @ctxt: the parser context
|
|
* @handler: the encoding handler
|
|
*
|
|
* change the input functions when discovering the character encoding
|
|
* of a given entity.
|
|
*
|
|
* Returns 0 in case of success, -1 otherwise
|
|
*/
|
|
int
|
|
xmlSwitchToEncoding(xmlParserCtxtPtr ctxt, xmlCharEncodingHandlerPtr handler)
|
|
{
|
|
if (ctxt == NULL)
|
|
return(-1);
|
|
return(xmlSwitchInputEncoding(ctxt, ctxt->input, handler));
|
|
}
|
|
|
|
/************************************************************************
|
|
* *
|
|
* Commodity functions to handle entities processing *
|
|
* *
|
|
************************************************************************/
|
|
|
|
/**
|
|
* xmlFreeInputStream:
|
|
* @input: an xmlParserInputPtr
|
|
*
|
|
* Free up an input stream.
|
|
*/
|
|
void
|
|
xmlFreeInputStream(xmlParserInputPtr input) {
|
|
if (input == NULL) return;
|
|
|
|
if (input->filename != NULL) xmlFree((char *) input->filename);
|
|
if (input->directory != NULL) xmlFree((char *) input->directory);
|
|
if (input->encoding != NULL) xmlFree((char *) input->encoding);
|
|
if (input->version != NULL) xmlFree((char *) input->version);
|
|
if ((input->free != NULL) && (input->base != NULL))
|
|
input->free((xmlChar *) input->base);
|
|
if (input->buf != NULL)
|
|
xmlFreeParserInputBuffer(input->buf);
|
|
xmlFree(input);
|
|
}
|
|
|
|
/**
|
|
* xmlNewInputStream:
|
|
* @ctxt: an XML parser context
|
|
*
|
|
* Create a new input stream structure.
|
|
*
|
|
* Returns the new input stream or NULL
|
|
*/
|
|
xmlParserInputPtr
|
|
xmlNewInputStream(xmlParserCtxtPtr ctxt) {
|
|
xmlParserInputPtr input;
|
|
|
|
input = (xmlParserInputPtr) xmlMalloc(sizeof(xmlParserInput));
|
|
if (input == NULL) {
|
|
xmlErrMemory(ctxt, "couldn't allocate a new input stream\n");
|
|
return(NULL);
|
|
}
|
|
memset(input, 0, sizeof(xmlParserInput));
|
|
input->line = 1;
|
|
input->col = 1;
|
|
input->standalone = -1;
|
|
|
|
/*
|
|
* If the context is NULL the id cannot be initialized, but that
|
|
* should not happen while parsing which is the situation where
|
|
* the id is actually needed.
|
|
*/
|
|
if (ctxt != NULL) {
|
|
if (input->id >= INT_MAX) {
|
|
xmlErrMemory(ctxt, "Input ID overflow\n");
|
|
return(NULL);
|
|
}
|
|
input->id = ctxt->input_id++;
|
|
}
|
|
|
|
return(input);
|
|
}
|
|
|
|
/**
|
|
* xmlNewIOInputStream:
|
|
* @ctxt: an XML parser context
|
|
* @input: an I/O Input
|
|
* @enc: the charset encoding if known
|
|
*
|
|
* Create a new input stream structure encapsulating the @input into
|
|
* a stream suitable for the parser.
|
|
*
|
|
* Returns the new input stream or NULL
|
|
*/
|
|
xmlParserInputPtr
|
|
xmlNewIOInputStream(xmlParserCtxtPtr ctxt, xmlParserInputBufferPtr input,
|
|
xmlCharEncoding enc) {
|
|
xmlParserInputPtr inputStream;
|
|
|
|
if (input == NULL) return(NULL);
|
|
if (xmlParserDebugEntities)
|
|
xmlGenericError(xmlGenericErrorContext, "new input from I/O\n");
|
|
inputStream = xmlNewInputStream(ctxt);
|
|
if (inputStream == NULL) {
|
|
return(NULL);
|
|
}
|
|
inputStream->filename = NULL;
|
|
inputStream->buf = input;
|
|
xmlBufResetInput(inputStream->buf->buffer, inputStream);
|
|
|
|
if (enc != XML_CHAR_ENCODING_NONE) {
|
|
xmlSwitchEncoding(ctxt, enc);
|
|
}
|
|
|
|
return(inputStream);
|
|
}
|
|
|
|
/**
|
|
* xmlNewEntityInputStream:
|
|
* @ctxt: an XML parser context
|
|
* @entity: an Entity pointer
|
|
*
|
|
* DEPRECATED: Internal function, do not use.
|
|
*
|
|
* Create a new input stream based on an xmlEntityPtr
|
|
*
|
|
* Returns the new input stream or NULL
|
|
*/
|
|
xmlParserInputPtr
|
|
xmlNewEntityInputStream(xmlParserCtxtPtr ctxt, xmlEntityPtr entity) {
|
|
xmlParserInputPtr input;
|
|
|
|
if (entity == NULL) {
|
|
xmlErrInternal(ctxt, "xmlNewEntityInputStream entity = NULL\n",
|
|
NULL);
|
|
return(NULL);
|
|
}
|
|
if (xmlParserDebugEntities)
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"new input from entity: %s\n", entity->name);
|
|
if (entity->content == NULL) {
|
|
switch (entity->etype) {
|
|
case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY:
|
|
xmlErrInternal(ctxt, "Cannot parse entity %s\n",
|
|
entity->name);
|
|
break;
|
|
case XML_EXTERNAL_GENERAL_PARSED_ENTITY:
|
|
case XML_EXTERNAL_PARAMETER_ENTITY:
|
|
input = xmlLoadExternalEntity((char *) entity->URI,
|
|
(char *) entity->ExternalID, ctxt);
|
|
if (input != NULL)
|
|
input->entity = entity;
|
|
return(input);
|
|
case XML_INTERNAL_GENERAL_ENTITY:
|
|
xmlErrInternal(ctxt,
|
|
"Internal entity %s without content !\n",
|
|
entity->name);
|
|
break;
|
|
case XML_INTERNAL_PARAMETER_ENTITY:
|
|
xmlErrInternal(ctxt,
|
|
"Internal parameter entity %s without content !\n",
|
|
entity->name);
|
|
break;
|
|
case XML_INTERNAL_PREDEFINED_ENTITY:
|
|
xmlErrInternal(ctxt,
|
|
"Predefined entity %s without content !\n",
|
|
entity->name);
|
|
break;
|
|
}
|
|
return(NULL);
|
|
}
|
|
input = xmlNewInputStream(ctxt);
|
|
if (input == NULL) {
|
|
return(NULL);
|
|
}
|
|
if (entity->URI != NULL)
|
|
input->filename = (char *) xmlStrdup((xmlChar *) entity->URI);
|
|
input->base = entity->content;
|
|
if (entity->length == 0)
|
|
entity->length = xmlStrlen(entity->content);
|
|
input->cur = entity->content;
|
|
input->length = entity->length;
|
|
input->end = &entity->content[input->length];
|
|
input->entity = entity;
|
|
return(input);
|
|
}
|
|
|
|
/**
|
|
* xmlNewStringInputStream:
|
|
* @ctxt: an XML parser context
|
|
* @buffer: an memory buffer
|
|
*
|
|
* Create a new input stream based on a memory buffer.
|
|
* Returns the new input stream
|
|
*/
|
|
xmlParserInputPtr
|
|
xmlNewStringInputStream(xmlParserCtxtPtr ctxt, const xmlChar *buffer) {
|
|
xmlParserInputPtr input;
|
|
xmlParserInputBufferPtr buf;
|
|
|
|
if (buffer == NULL) {
|
|
xmlErrInternal(ctxt, "xmlNewStringInputStream string = NULL\n",
|
|
NULL);
|
|
return(NULL);
|
|
}
|
|
if (xmlParserDebugEntities)
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"new fixed input: %.30s\n", buffer);
|
|
buf = xmlParserInputBufferCreateMem((const char *) buffer,
|
|
xmlStrlen(buffer),
|
|
XML_CHAR_ENCODING_NONE);
|
|
if (buf == NULL) {
|
|
xmlErrMemory(ctxt, NULL);
|
|
return(NULL);
|
|
}
|
|
input = xmlNewInputStream(ctxt);
|
|
if (input == NULL) {
|
|
xmlErrMemory(ctxt, "couldn't allocate a new input stream\n");
|
|
xmlFreeParserInputBuffer(buf);
|
|
return(NULL);
|
|
}
|
|
input->buf = buf;
|
|
xmlBufResetInput(input->buf->buffer, input);
|
|
return(input);
|
|
}
|
|
|
|
/**
|
|
* xmlNewInputFromFile:
|
|
* @ctxt: an XML parser context
|
|
* @filename: the filename to use as entity
|
|
*
|
|
* Create a new input stream based on a file or an URL.
|
|
*
|
|
* Returns the new input stream or NULL in case of error
|
|
*/
|
|
xmlParserInputPtr
|
|
xmlNewInputFromFile(xmlParserCtxtPtr ctxt, const char *filename) {
|
|
xmlParserInputBufferPtr buf;
|
|
xmlParserInputPtr inputStream;
|
|
char *directory = NULL;
|
|
xmlChar *URI = NULL;
|
|
|
|
if (xmlParserDebugEntities)
|
|
xmlGenericError(xmlGenericErrorContext,
|
|
"new input from file: %s\n", filename);
|
|
if (ctxt == NULL) return(NULL);
|
|
buf = xmlParserInputBufferCreateFilename(filename, XML_CHAR_ENCODING_NONE);
|
|
if (buf == NULL) {
|
|
if (filename == NULL)
|
|
__xmlLoaderErr(ctxt,
|
|
"failed to load external entity: NULL filename \n",
|
|
NULL);
|
|
else
|
|
__xmlLoaderErr(ctxt, "failed to load external entity \"%s\"\n",
|
|
(const char *) filename);
|
|
return(NULL);
|
|
}
|
|
|
|
inputStream = xmlNewInputStream(ctxt);
|
|
if (inputStream == NULL) {
|
|
xmlFreeParserInputBuffer(buf);
|
|
return(NULL);
|
|
}
|
|
|
|
inputStream->buf = buf;
|
|
inputStream = xmlCheckHTTPInput(ctxt, inputStream);
|
|
if (inputStream == NULL)
|
|
return(NULL);
|
|
|
|
if (inputStream->filename == NULL)
|
|
URI = xmlStrdup((xmlChar *) filename);
|
|
else
|
|
URI = xmlStrdup((xmlChar *) inputStream->filename);
|
|
directory = xmlParserGetDirectory((const char *) URI);
|
|
if (inputStream->filename != NULL) xmlFree((char *)inputStream->filename);
|
|
inputStream->filename = (char *) xmlCanonicPath((const xmlChar *) URI);
|
|
if (URI != NULL) xmlFree((char *) URI);
|
|
inputStream->directory = directory;
|
|
|
|
xmlBufResetInput(inputStream->buf->buffer, inputStream);
|
|
if ((ctxt->directory == NULL) && (directory != NULL))
|
|
ctxt->directory = (char *) xmlStrdup((const xmlChar *) directory);
|
|
return(inputStream);
|
|
}
|
|
|
|
/************************************************************************
|
|
* *
|
|
* Commodity functions to handle parser contexts *
|
|
* *
|
|
************************************************************************/
|
|
|
|
/**
|
|
* xmlInitSAXParserCtxt:
|
|
* @ctxt: XML parser context
|
|
* @sax: SAX handlert
|
|
* @userData: user data
|
|
*
|
|
* Initialize a SAX parser context
|
|
*
|
|
* Returns 0 in case of success and -1 in case of error
|
|
*/
|
|
|
|
static int
|
|
xmlInitSAXParserCtxt(xmlParserCtxtPtr ctxt, const xmlSAXHandler *sax,
|
|
void *userData)
|
|
{
|
|
xmlParserInputPtr input;
|
|
|
|
if(ctxt==NULL) {
|
|
xmlErrInternal(NULL, "Got NULL parser context\n", NULL);
|
|
return(-1);
|
|
}
|
|
|
|
xmlInitParser();
|
|
|
|
if (ctxt->dict == NULL)
|
|
ctxt->dict = xmlDictCreate();
|
|
if (ctxt->dict == NULL) {
|
|
xmlErrMemory(NULL, "cannot initialize parser context\n");
|
|
return(-1);
|
|
}
|
|
xmlDictSetLimit(ctxt->dict, XML_MAX_DICTIONARY_LIMIT);
|
|
|
|
if (ctxt->sax == NULL)
|
|
ctxt->sax = (xmlSAXHandler *) xmlMalloc(sizeof(xmlSAXHandler));
|
|
if (ctxt->sax == NULL) {
|
|
xmlErrMemory(NULL, "cannot initialize parser context\n");
|
|
return(-1);
|
|
}
|
|
if (sax == NULL) {
|
|
memset(ctxt->sax, 0, sizeof(xmlSAXHandler));
|
|
xmlSAXVersion(ctxt->sax, 2);
|
|
ctxt->userData = ctxt;
|
|
} else {
|
|
if (sax->initialized == XML_SAX2_MAGIC) {
|
|
memcpy(ctxt->sax, sax, sizeof(xmlSAXHandler));
|
|
} else {
|
|
memset(ctxt->sax, 0, sizeof(xmlSAXHandler));
|
|
memcpy(ctxt->sax, sax, sizeof(xmlSAXHandlerV1));
|
|
}
|
|
ctxt->userData = userData ? userData : ctxt;
|
|
}
|
|
|
|
ctxt->maxatts = 0;
|
|
ctxt->atts = NULL;
|
|
/* Allocate the Input stack */
|
|
if (ctxt->inputTab == NULL) {
|
|
ctxt->inputTab = (xmlParserInputPtr *)
|
|
xmlMalloc(5 * sizeof(xmlParserInputPtr));
|
|
ctxt->inputMax = 5;
|
|
}
|
|
if (ctxt->inputTab == NULL) {
|
|
xmlErrMemory(NULL, "cannot initialize parser context\n");
|
|
ctxt->inputNr = 0;
|
|
ctxt->inputMax = 0;
|
|
ctxt->input = NULL;
|
|
return(-1);
|
|
}
|
|
while ((input = inputPop(ctxt)) != NULL) { /* Non consuming */
|
|
xmlFreeInputStream(input);
|
|
}
|
|
ctxt->inputNr = 0;
|
|
ctxt->input = NULL;
|
|
|
|
ctxt->version = NULL;
|
|
ctxt->encoding = NULL;
|
|
ctxt->standalone = -1;
|
|
ctxt->hasExternalSubset = 0;
|
|
ctxt->hasPErefs = 0;
|
|
ctxt->html = 0;
|
|
ctxt->external = 0;
|
|
ctxt->instate = XML_PARSER_START;
|
|
ctxt->token = 0;
|
|
ctxt->directory = NULL;
|
|
|
|
/* Allocate the Node stack */
|
|
if (ctxt->nodeTab == NULL) {
|
|
ctxt->nodeTab = (xmlNodePtr *) xmlMalloc(10 * sizeof(xmlNodePtr));
|
|
ctxt->nodeMax = 10;
|
|
}
|
|
if (ctxt->nodeTab == NULL) {
|
|
xmlErrMemory(NULL, "cannot initialize parser context\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->node = NULL;
|
|
|
|
/* Allocate the Name stack */
|
|
if (ctxt->nameTab == NULL) {
|
|
ctxt->nameTab = (const xmlChar **) xmlMalloc(10 * sizeof(xmlChar *));
|
|
ctxt->nameMax = 10;
|
|
}
|
|
if (ctxt->nameTab == NULL) {
|
|
xmlErrMemory(NULL, "cannot initialize parser context\n");
|
|
ctxt->nodeNr = 0;
|
|
ctxt->nodeMax = 0;
|
|
ctxt->node = NULL;
|
|
ctxt->inputNr = 0;
|
|
ctxt->inputMax = 0;
|
|
ctxt->input = NULL;
|
|
ctxt->nameNr = 0;
|
|
ctxt->nameMax = 0;
|
|
ctxt->name = NULL;
|
|
return(-1);
|
|
}
|
|
ctxt->nameNr = 0;
|
|
ctxt->name = NULL;
|
|
|
|
/* Allocate the space stack */
|
|
if (ctxt->spaceTab == NULL) {
|
|
ctxt->spaceTab = (int *) xmlMalloc(10 * sizeof(int));
|
|
ctxt->spaceMax = 10;
|
|
}
|
|
if (ctxt->spaceTab == NULL) {
|
|
xmlErrMemory(NULL, "cannot initialize parser context\n");
|
|
ctxt->nodeNr = 0;
|
|
ctxt->nodeMax = 0;
|
|
ctxt->node = NULL;
|
|
ctxt->inputNr = 0;
|
|
ctxt->inputMax = 0;
|
|
ctxt->input = NULL;
|
|
ctxt->nameNr = 0;
|
|
ctxt->nameMax = 0;
|
|
ctxt->name = NULL;
|
|
ctxt->spaceNr = 0;
|
|
ctxt->spaceMax = 0;
|
|
ctxt->space = NULL;
|
|
return(-1);
|
|
}
|
|
ctxt->spaceNr = 1;
|
|
ctxt->spaceMax = 10;
|
|
ctxt->spaceTab[0] = -1;
|
|
ctxt->space = &ctxt->spaceTab[0];
|
|
ctxt->myDoc = NULL;
|
|
ctxt->wellFormed = 1;
|
|
ctxt->nsWellFormed = 1;
|
|
ctxt->valid = 1;
|
|
ctxt->loadsubset = xmlLoadExtDtdDefaultValue;
|
|
if (ctxt->loadsubset) {
|
|
ctxt->options |= XML_PARSE_DTDLOAD;
|
|
}
|
|
ctxt->validate = xmlDoValidityCheckingDefaultValue;
|
|
ctxt->pedantic = xmlPedanticParserDefaultValue;
|
|
if (ctxt->pedantic) {
|
|
ctxt->options |= XML_PARSE_PEDANTIC;
|
|
}
|
|
ctxt->linenumbers = xmlLineNumbersDefaultValue;
|
|
ctxt->keepBlanks = xmlKeepBlanksDefaultValue;
|
|
if (ctxt->keepBlanks == 0) {
|
|
ctxt->sax->ignorableWhitespace = xmlSAX2IgnorableWhitespace;
|
|
ctxt->options |= XML_PARSE_NOBLANKS;
|
|
}
|
|
|
|
ctxt->vctxt.flags = XML_VCTXT_USE_PCTXT;
|
|
ctxt->vctxt.userData = ctxt;
|
|
ctxt->vctxt.error = xmlParserValidityError;
|
|
ctxt->vctxt.warning = xmlParserValidityWarning;
|
|
if (ctxt->validate) {
|
|
if (xmlGetWarningsDefaultValue == 0)
|
|
ctxt->vctxt.warning = NULL;
|
|
else
|
|
ctxt->vctxt.warning = xmlParserValidityWarning;
|
|
ctxt->vctxt.nodeMax = 0;
|
|
ctxt->options |= XML_PARSE_DTDVALID;
|
|
}
|
|
ctxt->replaceEntities = xmlSubstituteEntitiesDefaultValue;
|
|
if (ctxt->replaceEntities) {
|
|
ctxt->options |= XML_PARSE_NOENT;
|
|
}
|
|
ctxt->record_info = 0;
|
|
ctxt->checkIndex = 0;
|
|
ctxt->inSubset = 0;
|
|
ctxt->errNo = XML_ERR_OK;
|
|
ctxt->depth = 0;
|
|
ctxt->charset = XML_CHAR_ENCODING_UTF8;
|
|
ctxt->catalogs = NULL;
|
|
ctxt->sizeentities = 0;
|
|
ctxt->sizeentcopy = 0;
|
|
ctxt->input_id = 1;
|
|
xmlInitNodeInfoSeq(&ctxt->node_seq);
|
|
return(0);
|
|
}
|
|
|
|
/**
|
|
* xmlInitParserCtxt:
|
|
* @ctxt: an XML parser context
|
|
*
|
|
* DEPRECATED: Internal function which will be made private in a future
|
|
* version.
|
|
*
|
|
* Initialize a parser context
|
|
*
|
|
* Returns 0 in case of success and -1 in case of error
|
|
*/
|
|
|
|
int
|
|
xmlInitParserCtxt(xmlParserCtxtPtr ctxt)
|
|
{
|
|
return(xmlInitSAXParserCtxt(ctxt, NULL, NULL));
|
|
}
|
|
|
|
/**
|
|
* xmlFreeParserCtxt:
|
|
* @ctxt: an XML parser context
|
|
*
|
|
* Free all the memory used by a parser context. However the parsed
|
|
* document in ctxt->myDoc is not freed.
|
|
*/
|
|
|
|
void
|
|
xmlFreeParserCtxt(xmlParserCtxtPtr ctxt)
|
|
{
|
|
xmlParserInputPtr input;
|
|
|
|
if (ctxt == NULL) return;
|
|
|
|
while ((input = inputPop(ctxt)) != NULL) { /* Non consuming */
|
|
xmlFreeInputStream(input);
|
|
}
|
|
if (ctxt->spaceTab != NULL) xmlFree(ctxt->spaceTab);
|
|
if (ctxt->nameTab != NULL) xmlFree((xmlChar * *)ctxt->nameTab);
|
|
if (ctxt->nodeTab != NULL) xmlFree(ctxt->nodeTab);
|
|
if (ctxt->nodeInfoTab != NULL) xmlFree(ctxt->nodeInfoTab);
|
|
if (ctxt->inputTab != NULL) xmlFree(ctxt->inputTab);
|
|
if (ctxt->version != NULL) xmlFree((char *) ctxt->version);
|
|
if (ctxt->encoding != NULL) xmlFree((char *) ctxt->encoding);
|
|
if (ctxt->extSubURI != NULL) xmlFree((char *) ctxt->extSubURI);
|
|
if (ctxt->extSubSystem != NULL) xmlFree((char *) ctxt->extSubSystem);
|
|
#ifdef LIBXML_SAX1_ENABLED
|
|
if ((ctxt->sax != NULL) &&
|
|
(ctxt->sax != (xmlSAXHandlerPtr) &xmlDefaultSAXHandler))
|
|
#else
|
|
if (ctxt->sax != NULL)
|
|
#endif /* LIBXML_SAX1_ENABLED */
|
|
xmlFree(ctxt->sax);
|
|
if (ctxt->directory != NULL) xmlFree((char *) ctxt->directory);
|
|
if (ctxt->vctxt.nodeTab != NULL) xmlFree(ctxt->vctxt.nodeTab);
|
|
if (ctxt->atts != NULL) xmlFree((xmlChar * *)ctxt->atts);
|
|
if (ctxt->dict != NULL) xmlDictFree(ctxt->dict);
|
|
if (ctxt->nsTab != NULL) xmlFree((char *) ctxt->nsTab);
|
|
if (ctxt->pushTab != NULL) xmlFree(ctxt->pushTab);
|
|
if (ctxt->attallocs != NULL) xmlFree(ctxt->attallocs);
|
|
if (ctxt->attsDefault != NULL)
|
|
xmlHashFree(ctxt->attsDefault, xmlHashDefaultDeallocator);
|
|
if (ctxt->attsSpecial != NULL)
|
|
xmlHashFree(ctxt->attsSpecial, NULL);
|
|
if (ctxt->freeElems != NULL) {
|
|
xmlNodePtr cur, next;
|
|
|
|
cur = ctxt->freeElems;
|
|
while (cur != NULL) {
|
|
next = cur->next;
|
|
xmlFree(cur);
|
|
cur = next;
|
|
}
|
|
}
|
|
if (ctxt->freeAttrs != NULL) {
|
|
xmlAttrPtr cur, next;
|
|
|
|
cur = ctxt->freeAttrs;
|
|
while (cur != NULL) {
|
|
next = cur->next;
|
|
xmlFree(cur);
|
|
cur = next;
|
|
}
|
|
}
|
|
/*
|
|
* cleanup the error strings
|
|
*/
|
|
if (ctxt->lastError.message != NULL)
|
|
xmlFree(ctxt->lastError.message);
|
|
if (ctxt->lastError.file != NULL)
|
|
xmlFree(ctxt->lastError.file);
|
|
if (ctxt->lastError.str1 != NULL)
|
|
xmlFree(ctxt->lastError.str1);
|
|
if (ctxt->lastError.str2 != NULL)
|
|
xmlFree(ctxt->lastError.str2);
|
|
if (ctxt->lastError.str3 != NULL)
|
|
xmlFree(ctxt->lastError.str3);
|
|
|
|
#ifdef LIBXML_CATALOG_ENABLED
|
|
if (ctxt->catalogs != NULL)
|
|
xmlCatalogFreeLocal(ctxt->catalogs);
|
|
#endif
|
|
xmlFree(ctxt);
|
|
}
|
|
|
|
/**
|
|
* xmlNewParserCtxt:
|
|
*
|
|
* Allocate and initialize a new parser context.
|
|
*
|
|
* Returns the xmlParserCtxtPtr or NULL
|
|
*/
|
|
|
|
xmlParserCtxtPtr
|
|
xmlNewParserCtxt(void)
|
|
{
|
|
return(xmlNewSAXParserCtxt(NULL, NULL));
|
|
}
|
|
|
|
/**
|
|
* xmlNewSAXParserCtxt:
|
|
* @sax: SAX handler
|
|
* @userData: user data
|
|
*
|
|
* Allocate and initialize a new SAX parser context. If userData is NULL,
|
|
* the parser context will be passed as user data.
|
|
*
|
|
* Returns the xmlParserCtxtPtr or NULL if memory allocation failed.
|
|
*/
|
|
|
|
xmlParserCtxtPtr
|
|
xmlNewSAXParserCtxt(const xmlSAXHandler *sax, void *userData)
|
|
{
|
|
xmlParserCtxtPtr ctxt;
|
|
|
|
ctxt = (xmlParserCtxtPtr) xmlMalloc(sizeof(xmlParserCtxt));
|
|
if (ctxt == NULL) {
|
|
xmlErrMemory(NULL, "cannot allocate parser context\n");
|
|
return(NULL);
|
|
}
|
|
memset(ctxt, 0, sizeof(xmlParserCtxt));
|
|
if (xmlInitSAXParserCtxt(ctxt, sax, userData) < 0) {
|
|
xmlFreeParserCtxt(ctxt);
|
|
return(NULL);
|
|
}
|
|
return(ctxt);
|
|
}
|
|
|
|
/************************************************************************
|
|
* *
|
|
* Handling of node information *
|
|
* *
|
|
************************************************************************/
|
|
|
|
/**
|
|
* xmlClearParserCtxt:
|
|
* @ctxt: an XML parser context
|
|
*
|
|
* Clear (release owned resources) and reinitialize a parser context
|
|
*/
|
|
|
|
void
|
|
xmlClearParserCtxt(xmlParserCtxtPtr ctxt)
|
|
{
|
|
if (ctxt==NULL)
|
|
return;
|
|
xmlClearNodeInfoSeq(&ctxt->node_seq);
|
|
xmlCtxtReset(ctxt);
|
|
}
|
|
|
|
|
|
/**
|
|
* xmlParserFindNodeInfo:
|
|
* @ctx: an XML parser context
|
|
* @node: an XML node within the tree
|
|
*
|
|
* DEPRECATED: Don't use.
|
|
*
|
|
* Find the parser node info struct for a given node
|
|
*
|
|
* Returns an xmlParserNodeInfo block pointer or NULL
|
|
*/
|
|
const xmlParserNodeInfo *
|
|
xmlParserFindNodeInfo(const xmlParserCtxtPtr ctx, const xmlNodePtr node)
|
|
{
|
|
unsigned long pos;
|
|
|
|
if ((ctx == NULL) || (node == NULL))
|
|
return (NULL);
|
|
/* Find position where node should be at */
|
|
pos = xmlParserFindNodeInfoIndex(&ctx->node_seq, node);
|
|
if (pos < ctx->node_seq.length
|
|
&& ctx->node_seq.buffer[pos].node == node)
|
|
return &ctx->node_seq.buffer[pos];
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* xmlInitNodeInfoSeq:
|
|
* @seq: a node info sequence pointer
|
|
*
|
|
* DEPRECATED: Don't use.
|
|
*
|
|
* -- Initialize (set to initial state) node info sequence
|
|
*/
|
|
void
|
|
xmlInitNodeInfoSeq(xmlParserNodeInfoSeqPtr seq)
|
|
{
|
|
if (seq == NULL)
|
|
return;
|
|
seq->length = 0;
|
|
seq->maximum = 0;
|
|
seq->buffer = NULL;
|
|
}
|
|
|
|
/**
|
|
* xmlClearNodeInfoSeq:
|
|
* @seq: a node info sequence pointer
|
|
*
|
|
* DEPRECATED: Don't use.
|
|
*
|
|
* -- Clear (release memory and reinitialize) node
|
|
* info sequence
|
|
*/
|
|
void
|
|
xmlClearNodeInfoSeq(xmlParserNodeInfoSeqPtr seq)
|
|
{
|
|
if (seq == NULL)
|
|
return;
|
|
if (seq->buffer != NULL)
|
|
xmlFree(seq->buffer);
|
|
xmlInitNodeInfoSeq(seq);
|
|
}
|
|
|
|
/**
|
|
* xmlParserFindNodeInfoIndex:
|
|
* @seq: a node info sequence pointer
|
|
* @node: an XML node pointer
|
|
*
|
|
* DEPRECATED: Don't use.
|
|
*
|
|
* xmlParserFindNodeInfoIndex : Find the index that the info record for
|
|
* the given node is or should be at in a sorted sequence
|
|
*
|
|
* Returns a long indicating the position of the record
|
|
*/
|
|
unsigned long
|
|
xmlParserFindNodeInfoIndex(const xmlParserNodeInfoSeqPtr seq,
|
|
const xmlNodePtr node)
|
|
{
|
|
unsigned long upper, lower, middle;
|
|
int found = 0;
|
|
|
|
if ((seq == NULL) || (node == NULL))
|
|
return ((unsigned long) -1);
|
|
|
|
/* Do a binary search for the key */
|
|
lower = 1;
|
|
upper = seq->length;
|
|
middle = 0;
|
|
while (lower <= upper && !found) {
|
|
middle = lower + (upper - lower) / 2;
|
|
if (node == seq->buffer[middle - 1].node)
|
|
found = 1;
|
|
else if (node < seq->buffer[middle - 1].node)
|
|
upper = middle - 1;
|
|
else
|
|
lower = middle + 1;
|
|
}
|
|
|
|
/* Return position */
|
|
if (middle == 0 || seq->buffer[middle - 1].node < node)
|
|
return middle;
|
|
else
|
|
return middle - 1;
|
|
}
|
|
|
|
|
|
/**
|
|
* xmlParserAddNodeInfo:
|
|
* @ctxt: an XML parser context
|
|
* @info: a node info sequence pointer
|
|
*
|
|
* DEPRECATED: Don't use.
|
|
*
|
|
* Insert node info record into the sorted sequence
|
|
*/
|
|
void
|
|
xmlParserAddNodeInfo(xmlParserCtxtPtr ctxt,
|
|
const xmlParserNodeInfoPtr info)
|
|
{
|
|
unsigned long pos;
|
|
|
|
if ((ctxt == NULL) || (info == NULL)) return;
|
|
|
|
/* Find pos and check to see if node is already in the sequence */
|
|
pos = xmlParserFindNodeInfoIndex(&ctxt->node_seq, (xmlNodePtr)
|
|
info->node);
|
|
|
|
if ((pos < ctxt->node_seq.length) &&
|
|
(ctxt->node_seq.buffer != NULL) &&
|
|
(ctxt->node_seq.buffer[pos].node == info->node)) {
|
|
ctxt->node_seq.buffer[pos] = *info;
|
|
}
|
|
|
|
/* Otherwise, we need to add new node to buffer */
|
|
else {
|
|
if ((ctxt->node_seq.length + 1 > ctxt->node_seq.maximum) ||
|
|
(ctxt->node_seq.buffer == NULL)) {
|
|
xmlParserNodeInfo *tmp_buffer;
|
|
unsigned int byte_size;
|
|
|
|
if (ctxt->node_seq.maximum == 0)
|
|
ctxt->node_seq.maximum = 2;
|
|
byte_size = (sizeof(*ctxt->node_seq.buffer) *
|
|
(2 * ctxt->node_seq.maximum));
|
|
|
|
if (ctxt->node_seq.buffer == NULL)
|
|
tmp_buffer = (xmlParserNodeInfo *) xmlMalloc(byte_size);
|
|
else
|
|
tmp_buffer =
|
|
(xmlParserNodeInfo *) xmlRealloc(ctxt->node_seq.buffer,
|
|
byte_size);
|
|
|
|
if (tmp_buffer == NULL) {
|
|
xmlErrMemory(ctxt, "failed to allocate buffer\n");
|
|
return;
|
|
}
|
|
ctxt->node_seq.buffer = tmp_buffer;
|
|
ctxt->node_seq.maximum *= 2;
|
|
}
|
|
|
|
/* If position is not at end, move elements out of the way */
|
|
if (pos != ctxt->node_seq.length) {
|
|
unsigned long i;
|
|
|
|
for (i = ctxt->node_seq.length; i > pos; i--)
|
|
ctxt->node_seq.buffer[i] = ctxt->node_seq.buffer[i - 1];
|
|
}
|
|
|
|
/* Copy element and increase length */
|
|
ctxt->node_seq.buffer[pos] = *info;
|
|
ctxt->node_seq.length++;
|
|
}
|
|
}
|
|
|
|
/************************************************************************
|
|
* *
|
|
* Defaults settings *
|
|
* *
|
|
************************************************************************/
|
|
/**
|
|
* xmlPedanticParserDefault:
|
|
* @val: int 0 or 1
|
|
*
|
|
* DEPRECATED: Use the modern options API with XML_PARSE_PEDANTIC.
|
|
*
|
|
* Set and return the previous value for enabling pedantic warnings.
|
|
*
|
|
* Returns the last value for 0 for no substitution, 1 for substitution.
|
|
*/
|
|
|
|
int
|
|
xmlPedanticParserDefault(int val) {
|
|
int old = xmlPedanticParserDefaultValue;
|
|
|
|
xmlPedanticParserDefaultValue = val;
|
|
return(old);
|
|
}
|
|
|
|
/**
|
|
* xmlLineNumbersDefault:
|
|
* @val: int 0 or 1
|
|
*
|
|
* DEPRECATED: The modern options API always enables line numbers.
|
|
*
|
|
* Set and return the previous value for enabling line numbers in elements
|
|
* contents. This may break on old application and is turned off by default.
|
|
*
|
|
* Returns the last value for 0 for no substitution, 1 for substitution.
|
|
*/
|
|
|
|
int
|
|
xmlLineNumbersDefault(int val) {
|
|
int old = xmlLineNumbersDefaultValue;
|
|
|
|
xmlLineNumbersDefaultValue = val;
|
|
return(old);
|
|
}
|
|
|
|
/**
|
|
* xmlSubstituteEntitiesDefault:
|
|
* @val: int 0 or 1
|
|
*
|
|
* DEPRECATED: Use the modern options API with XML_PARSE_NOENT.
|
|
*
|
|
* Set and return the previous value for default entity support.
|
|
* Initially the parser always keep entity references instead of substituting
|
|
* entity values in the output. This function has to be used to change the
|
|
* default parser behavior
|
|
* SAX::substituteEntities() has to be used for changing that on a file by
|
|
* file basis.
|
|
*
|
|
* Returns the last value for 0 for no substitution, 1 for substitution.
|
|
*/
|
|
|
|
int
|
|
xmlSubstituteEntitiesDefault(int val) {
|
|
int old = xmlSubstituteEntitiesDefaultValue;
|
|
|
|
xmlSubstituteEntitiesDefaultValue = val;
|
|
return(old);
|
|
}
|
|
|
|
/**
|
|
* xmlKeepBlanksDefault:
|
|
* @val: int 0 or 1
|
|
*
|
|
* DEPRECATED: Use the modern options API with XML_PARSE_NOBLANKS.
|
|
*
|
|
* Set and return the previous value for default blanks text nodes support.
|
|
* The 1.x version of the parser used an heuristic to try to detect
|
|
* ignorable white spaces. As a result the SAX callback was generating
|
|
* xmlSAX2IgnorableWhitespace() callbacks instead of characters() one, and when
|
|
* using the DOM output text nodes containing those blanks were not generated.
|
|
* The 2.x and later version will switch to the XML standard way and
|
|
* ignorableWhitespace() are only generated when running the parser in
|
|
* validating mode and when the current element doesn't allow CDATA or
|
|
* mixed content.
|
|
* This function is provided as a way to force the standard behavior
|
|
* on 1.X libs and to switch back to the old mode for compatibility when
|
|
* running 1.X client code on 2.X . Upgrade of 1.X code should be done
|
|
* by using xmlIsBlankNode() commodity function to detect the "empty"
|
|
* nodes generated.
|
|
* This value also affect autogeneration of indentation when saving code
|
|
* if blanks sections are kept, indentation is not generated.
|
|
*
|
|
* Returns the last value for 0 for no substitution, 1 for substitution.
|
|
*/
|
|
|
|
int
|
|
xmlKeepBlanksDefault(int val) {
|
|
int old = xmlKeepBlanksDefaultValue;
|
|
|
|
xmlKeepBlanksDefaultValue = val;
|
|
if (!val) xmlIndentTreeOutput = 1;
|
|
return(old);
|
|
}
|
|
|