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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
package com.sun.star.lib.uno.adapter;
import com.sun.star.io.*;
import com.sun.star.lib.uno.helper.ComponentBase;
public final class XOutputStreamToByteArrayAdapter
extends ComponentBase
implements XOutputStream
{
private static final int initialSize = 100240; // 10 kb
private int size = 0;
private int position = 0;
private boolean externalBuffer = 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;
} else {
size = initialSize;
buffer = new byte[size];
}
}
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;
}
}
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
{
if ( values.length > size-position )
{
if ( externalBuffer )
throw new BufferSizeExceededException("out of buffer space, cannot grow external buffer");
while ( values.length > size-position ) {
size *= 2;
}
byte[] 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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