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/*
* libjingle
* Copyright 2004--2005, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _xmlparser_h_
#define _xmlparser_h_
#include <string>
#include "talk/xmllite/xmlnsstack.h"
#ifdef EXPAT_RELATIVE_PATH
#include "lib/expat.h"
#else
#include "third_party/expat/v2_0_1/Source/lib/expat.h"
#endif // EXPAT_RELATIVE_PATH
struct XML_ParserStruct;
typedef struct XML_ParserStruct* XML_Parser;
namespace buzz {
class XmlParseHandler;
class XmlParseContext;
class XmlParser;
class XmlParseContext {
public:
virtual ~XmlParseContext() {}
virtual QName ResolveQName(const char * qname, bool isAttr) = 0;
virtual void RaiseError(XML_Error err) = 0;
virtual void GetPosition(unsigned long * line, unsigned long * column,
unsigned long * byte_index) = 0;
};
class XmlParseHandler {
public:
virtual ~XmlParseHandler() {}
virtual void StartElement(XmlParseContext * pctx,
const char * name, const char ** atts) = 0;
virtual void EndElement(XmlParseContext * pctx,
const char * name) = 0;
virtual void CharacterData(XmlParseContext * pctx,
const char * text, int len) = 0;
virtual void Error(XmlParseContext * pctx,
XML_Error errorCode) = 0;
};
class XmlParser {
public:
static void ParseXml(XmlParseHandler * pxph, std::string text);
explicit XmlParser(XmlParseHandler * pxph);
bool Parse(const char * data, size_t len, bool isFinal);
void Reset();
virtual ~XmlParser();
// expat callbacks
void ExpatStartElement(const char * name, const char ** atts);
void ExpatEndElement(const char * name);
void ExpatCharacterData(const char * text, int len);
void ExpatXmlDecl(const char * ver, const char * enc, int standalone);
private:
class ParseContext : public XmlParseContext {
public:
ParseContext(XmlParser * parser);
virtual ~ParseContext();
virtual QName ResolveQName(const char * qname, bool isAttr);
virtual void RaiseError(XML_Error err) { if (!raised_) raised_ = err; }
virtual void GetPosition(unsigned long * line, unsigned long * column,
unsigned long * byte_index);
XML_Error RaisedError() { return raised_; }
void Reset();
void StartElement();
void EndElement();
void StartNamespace(const char * prefix, const char * ns);
void SetPosition(int line, int column, long byte_index);
private:
const XmlParser * parser_;
XmlnsStack xmlnsstack_;
XML_Error raised_;
XML_Size line_number_;
XML_Size column_number_;
XML_Index byte_index_;
};
ParseContext context_;
XML_Parser expat_;
XmlParseHandler * pxph_;
bool sentError_;
};
}
#endif
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