StatusHandler.h

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// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 4; tab-width: 4; -*-
// vim: set shiftwidth=4 softtabstop=4 expandtab:
/*
 ********************************************************************
 ** NIDAS: NCAR In-situ Data Acquistion Software
 **
 ** 2005, Copyright University Corporation for Atmospheric Research
 **
 ** This program is free software; you can redistribute it and/or modify
 ** it under the terms of the GNU General Public License as published by
 ** the Free Software Foundation; either version 2 of the License, or
 ** (at your option) any later version.
 **
 ** This program is distributed in the hope that it will be useful,
 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ** GNU General Public License for more details.
 **
 ** The LICENSE.txt file accompanying this software contains
 ** a copy of the GNU General Public License. If it is not found,
 ** write to the Free Software Foundation, Inc.,
 ** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 **
 ********************************************************************
*/
#ifndef NIDAS_CORE_STATUSHANDLER_H
#define NIDAS_CORE_STATUSHANDLER_H

#include <xercesc/sax2/XMLReaderFactory.hpp>    // provides SAX2XMLReader
#include <xercesc/sax2/DefaultHandler.hpp>
#include <nidas/util/Exception.h>
#include <string>

namespace nidas { namespace core {

class StatusListener;

class StatusHandler:public xercesc::DefaultHandler
{
public:
    StatusHandler(StatusListener * lstn):
        _listener(lstn), _element(NONE),_src()
    {
    }

    // -----------------------------------------------------------------------
    //  Implementations of the SAX ErrorHandler interface
    // -----------------------------------------------------------------------
    void warning(const xercesc::SAXParseException & exc);
    void error(const xercesc::SAXParseException & exc);
    void fatalError(const xercesc::SAXParseException & exc);

    // -----------------------------------------------------------------------
    //  Implementations of the SAX DocumentHandler interface
    // -----------------------------------------------------------------------
    void startElement(const XMLCh * const uri,
            const XMLCh * const localname,
            const XMLCh * const qname,
            const xercesc::Attributes & attributes);

    void endElement(const XMLCh * const uri,
            const XMLCh * const localname,
            const XMLCh * const qname);

    void characters(const XMLCh * const chars,
#if XERCES_VERSION_MAJOR < 3
                const unsigned int length);
#else
                const XMLSize_t length);
#endif

    enum elementType { SOURCE, TIME, STATUS, SAMPLEPOOL, NONE };

private:

    StatusListener *_listener;

    enum elementType _element;

    std::string _src;

    StatusHandler(const StatusHandler&);

    StatusHandler& operator=(const StatusHandler&);
};

}}  // namespace nidas namespace core

#endif