/*
* org.openmicroscopy.shoola.util.concur.FakeByteBufferFiller
*
*------------------------------------------------------------------------------
* Copyright (C) 2006 University of Dundee. All rights reserved.
*
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*------------------------------------------------------------------------------
*/
package org.openmicroscopy.shoola.util.concur;
//Java imports
//Third-party libraries
//Application-internal dependencies
/**
* Simulates a real {@link ByteBufferFiller}.
* Simply writes {@link #totalLength} {@link #writeValue}s into the buffer.
*
* @author Jean-Marie Burel
* <a href="mailto:j.burel@dundee.ac.uk">j.burel@dundee.ac.uk</a>
* @author <br>Andrea Falconi
* <a href="mailto:a.falconi@dundee.ac.uk">
* a.falconi@dundee.ac.uk</a>
* @version 2.2
* <small>
* (<b>Internal version:</b> $Revision$ $Date$)
* </small>
* @since OME2.2
*/
public class FakeByteBufferFiller
implements ByteBufferFiller
{
private int bytesWritten;
private int totalLength;
private byte writeValue;
FakeByteBufferFiller(int totalLength, byte writeValue)
{
bytesWritten = 0;
this.totalLength = totalLength; //If <=0, write ret -1 from 1st call.
this.writeValue = writeValue;
}
public int write(byte[] buffer, int offset, int length)
{
int bytesLeft = totalLength-bytesWritten,
bytesToWrite = Math.min(bytesLeft, length), i;
if (bytesLeft < 1) return -1;
for (i = 0; i < bytesToWrite; ++i)
buffer[offset+i] = writeValue;
bytesWritten += i;
return i;
}
public int getTotalLength()
{
return totalLength;
}
}