saxparser.h

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//==========================================================================
//  SAXPARSER.H - part of
//                     OMNeT++/OMNEST
//            Discrete System Simulation in C++
//
//==========================================================================

/*--------------------------------------------------------------*
  Copyright (C) 2002-2017 Andras Varga
  Copyright (C) 2006-2017 OpenSim Ltd.

  This file is distributed WITHOUT ANY WARRANTY. See the file
  `license' for details on this and other legal matters.
*--------------------------------------------------------------*/



#ifndef __OMNETPP_NEDXML_SAXPARSER_H
#define __OMNETPP_NEDXML_SAXPARSER_H

#include <cstdio>
#include "nedxmldefs.h"

namespace omnetpp {
namespace nedxml {

class SAXParser;


class NEDXML_API SAXHandler
{
    friend class SAXParser;
  protected:
    SAXParser *parser;

    // internal: called from SAXParser::setHandler()
    virtual void setParser(SAXParser *p) {parser=p;}

  public:
    SAXHandler() {parser=nullptr;}

    virtual ~SAXHandler() {}

    virtual void startElement(const char *name, const char **atts)  {}

    virtual void endElement(const char *name)  {}

    virtual void characterData(const char *s, int len)  {}

    virtual void processingInstruction(const char *target, const char *data)  {}

    virtual void comment(const char *data)  {}

    virtual void startCdataSection()  {}

    virtual void endCdataSection()  {}
};


class NEDXML_API SAXParser
{
  protected:
    char errorText[512];
    SAXHandler *saxHandler;
    void *currentParser;

  protected:
    // allows for a common implementation of parse() and parseContent()
    bool doParse(const char *filename, const char *content);

  public:
    SAXParser();

    void setHandler(SAXHandler *sh);

    bool parse(const char *filename);

    bool parseContent(const char *content);

    int getCurrentLineNumber();

    const char *getErrorMessage()  {return errorText;}
};

} // namespace nedxml
}  // namespace omnetpp


#endif