examples/ForumNokia/DescriptorExample/src/FileForwarder.cpp

/*
 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
 *    
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *    
 *  * Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *  * 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.
 *  * Neither the name of Nokia Corporation nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *    
 *    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
 *    
 *    Description:  
 */


#include <e32base.h>
#include <e32cons.h>
#include <e32std.h>
#include <f32file.h>
#include "DescriptorExamples.h"

// -----------------------------------------------------------------------------
// @see documentation from the header file "DescriptorExamples.h".
// -----------------------------------------------------------------------------
void CFileForwarder::ConstructL(const TDesC &logFileName)
    {
    iBuf = HBufC::NewL( 4096 );

    int pos = logFileName.LocateReverse( '\\' );
    TPtrC dirName = logFileName.Left( pos+1 );

    User::LeaveIfError(iFsSession.Connect()); // connect session
    iFsSession.MkDirAll(dirName);

    if( iFile.Open(iFsSession,logFileName,EFileWrite|EFileStreamText)
         == KErrNone )
        {
        // go to the end of the file
        TInt tmp = 0;
        iFile.Seek(ESeekEnd, tmp);
        } else
        {
        // file doesn't exist, create a new
        User::LeaveIfError(iFile.Replace(iFsSession,logFileName,
                                         EFileWrite|EFileStreamText));
        }
    }

// -----------------------------------------------------------------------------
// @see documentation from the header file "DescriptorExamples.h".
// -----------------------------------------------------------------------------
TPtr CFileForwarder::GetViewBuffer()
    {
    return iBuf->Des();
    }

// -----------------------------------------------------------------------------
// @see documentation from the header file "DescriptorExamples.h".
// -----------------------------------------------------------------------------
void CFileForwarder::UpdateView()
    {
    TPtrC8 representation((TUint8*)iBuf->Ptr(), iBuf->Size());
    iFile.Write(representation);
    iFile.Flush();

    iBuf->Des().SetLength( 0 );
    }

// -----------------------------------------------------------------------------
// @see documentation from the header file "DescriptorExamples.h".
// -----------------------------------------------------------------------------
CFileForwarder::~CFileForwarder()
    {
    iFile.Close();
    iFsSession.Close();
    delete iBuf;
    }

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