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/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_LIBJINGLE_XMLLITE_XMLPARSER_H_
#define WEBRTC_LIBJINGLE_XMLLITE_XMLPARSER_H_
#include <string>
#include "webrtc/libjingle/xmllite/xmlnsstack.h"
#ifdef EXPAT_RELATIVE_PATH
#include "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();
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:
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_;
};
} // namespace buzz
#endif // WEBRTC_LIBJINGLE_XMLLITE_XMLPARSER_H_
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