samples/DOMCount/DOMCount.hpp

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * $Log$
 * Revision 1.11  2004/09/08 13:55:31  peiyongz
 * Apache License Version 2.0
 *
 * Revision 1.10  2003/05/30 09:36:35  gareth
 * Use new macros for iostream.h and std:: issues.
 *
 * Revision 1.9  2003/02/05 18:53:22  tng
 * [Bug 11915] Utility for freeing memory.
 *
 * Revision 1.8  2002/11/05 21:46:19  tng
 * Explicit code using namespace in application.
 *
 * Revision 1.7  2002/06/18 16:19:40  knoaman
 * Replace XercesDOMParser with DOMBuilder for parsing XML documents.
 *
 * Revision 1.6  2002/02/01 22:35:01  peiyongz
 * sane_include
 *
 * Revision 1.5  2000/10/20 22:00:35  andyh
 * DOMCount sample Minor cleanup - rename error handler class to say that it is an error handler.
 *
 * Revision 1.4  2000/03/02 19:53:39  roddey
 * This checkin includes many changes done while waiting for the
 * 1.1.0 code to be finished. I can't list them all here, but a list is
 * available elsewhere.
 *
 * Revision 1.3  2000/02/11 02:43:55  abagchi
 * Removed StrX::transcode
 *
 * Revision 1.2  2000/02/06 07:47:17  rahulj
 * Year 2K copyright swat.
 *
 * Revision 1.1.1.1  1999/11/09 01:09:52  twl
 * Initial checkin
 *
 * Revision 1.5  1999/11/08 20:43:35  rahul
 * Swat for adding in Product name and CVS comment log variable.
 *
 */

// ---------------------------------------------------------------------------
//  Includes
// ---------------------------------------------------------------------------
#include <xercesc/dom/DOMErrorHandler.hpp>
#include <xercesc/util/XMLString.hpp>
#if defined(XERCES_NEW_IOSTREAMS)
#include <iostream>
#else
#include <iostream.h>
#endif

XERCES_CPP_NAMESPACE_USE

// ---------------------------------------------------------------------------
//  Simple error handler deriviative to install on parser
// ---------------------------------------------------------------------------
class DOMCountErrorHandler : public DOMErrorHandler
{
public:
    // -----------------------------------------------------------------------
    //  Constructors and Destructor
    // -----------------------------------------------------------------------
    DOMCountErrorHandler();
    ~DOMCountErrorHandler();


    // -----------------------------------------------------------------------
    //  Getter methods
    // -----------------------------------------------------------------------
    bool getSawErrors() const;


    // -----------------------------------------------------------------------
    //  Implementation of the DOM ErrorHandler interface
    // -----------------------------------------------------------------------
    bool handleError(const DOMError& domError);
    void resetErrors();


private :
    // -----------------------------------------------------------------------
    //  Unimplemented constructors and operators
    // -----------------------------------------------------------------------
    DOMCountErrorHandler(const DOMCountErrorHandler&);
    void operator=(const DOMCountErrorHandler&);


    // -----------------------------------------------------------------------
    //  Private data members
    //
    //  fSawErrors
    //      This is set if we get any errors, and is queryable via a getter
    //      method. Its used by the main code to suppress output if there are
    //      errors.
    // -----------------------------------------------------------------------
    bool    fSawErrors;
};


// ---------------------------------------------------------------------------
//  This is a simple class that lets us do easy (though not terribly efficient)
//  trancoding of XMLCh data to local code page for display.
// ---------------------------------------------------------------------------
class StrX
{
public :
    // -----------------------------------------------------------------------
    //  Constructors and Destructor
    // -----------------------------------------------------------------------
    StrX(const XMLCh* const toTranscode)
    {
        // Call the private transcoding method
        fLocalForm = XMLString::transcode(toTranscode);
    }

    ~StrX()
    {
        XMLString::release(&fLocalForm);
    }


    // -----------------------------------------------------------------------
    //  Getter methods
    // -----------------------------------------------------------------------
    const char* localForm() const
    {
        return fLocalForm;
    }

private :
    // -----------------------------------------------------------------------
    //  Private data members
    //
    //  fLocalForm
    //      This is the local code page form of the string.
    // -----------------------------------------------------------------------
    char*   fLocalForm;
};

inline XERCES_STD_QUALIFIER ostream& operator<<(XERCES_STD_QUALIFIER ostream& target, const StrX& toDump)
{
    target << toDump.localForm();
    return target;
}

inline bool DOMCountErrorHandler::getSawErrors() const
{
    return fSawErrors;
}