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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
/*
* ByteArrayXOutputStream.java
*
* Created on 11. April 2003, 14:20
*/
package com.sun.star.lib.uno.adapter;
/**
*
* @author lo119109
*/
import com.sun.star.io.*;
import com.sun.star.lib.uno.helper.ComponentBase;
public class XOutputStreamToByteArrayAdapter
extends ComponentBase
implements XOutputStream
{
private int initialSize = 100240; // 10 kb
private int size = 0;
private int position = 0;
private boolean externalBuffer = false;
private boolean closed = false;
private byte[] buffer;
/** Creates a new instance of ByteArrayXOutputStream */
public XOutputStreamToByteArrayAdapter() {
this(null);
}
public XOutputStreamToByteArrayAdapter(byte[] aBuffer) {
if (aBuffer != null) {
externalBuffer = true;
buffer = aBuffer;
size = buffer.length;
// System.err.println("new outputbuffer with external storage");
} else {
size = initialSize;
buffer = new byte[size];
// System.err.println("new outputbuffer with internal storage");
}
}
public byte[] getBuffer() {
return buffer;
}
public void closeOutput()
throws com.sun.star.io.NotConnectedException,
com.sun.star.io.BufferSizeExceededException,
com.sun.star.io.IOException
{
// trim buffer
if ( buffer.length > position && !externalBuffer )
{
byte[] newBuffer = new byte[position];
System.arraycopy(buffer, 0, newBuffer, 0, position);
buffer = newBuffer;
}
closed = true;
}
public void flush()
throws com.sun.star.io.NotConnectedException,
com.sun.star.io.BufferSizeExceededException,
com.sun.star.io.IOException
{
}
public void writeBytes(byte[] values)
throws com.sun.star.io.NotConnectedException,
com.sun.star.io.BufferSizeExceededException,
com.sun.star.io.IOException
{
// System.err.println("writeBytes("+values.length+")");
if ( values.length > size-position )
{
if ( externalBuffer )
throw new BufferSizeExceededException("out of buffer space, cannot grow external buffer");
byte[] newBuffer = null;
while ( values.length > size-position )
size *= 2;
// System.err.println("new buffer size is "+size+" bytes.");
newBuffer = new byte[size];
System.arraycopy(buffer, 0, newBuffer, 0, position);
buffer = newBuffer;
}
System.arraycopy(values, 0, buffer, position, values.length);
position += values.length;
}
}
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