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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 complex.storages;
import com.sun.star.uno.XInterface;
import com.sun.star.lang.XMultiServiceFactory;
import com.sun.star.lang.XSingleServiceFactory;
import com.sun.star.bridge.XUnoUrlResolver;
import com.sun.star.uno.UnoRuntime;
import com.sun.star.uno.XInterface;
import com.sun.star.io.XStream;
import com.sun.star.io.XInputStream;
import com.sun.star.io.XOutputStream;
import com.sun.star.io.XTruncate;
import com.sun.star.io.XSeekable;
public class BorderedStream
implements XStream, XInputStream, XOutputStream, XTruncate, XSeekable
{
int m_nMaxSize;
int m_nCurSize;
int m_nCurPos;
byte m_pBytes[];
public BorderedStream( int nMaxSize )
{
m_nMaxSize = nMaxSize;
m_nCurSize = 0;
m_nCurPos = 0;
m_pBytes = new byte[m_nMaxSize];
}
// XStream
public synchronized XInputStream getInputStream()
throws com.sun.star.uno.RuntimeException
{
return (XInputStream)UnoRuntime.queryInterface( XInputStream.class, this );
}
public synchronized XOutputStream getOutputStream()
throws com.sun.star.uno.RuntimeException
{
return (XOutputStream)UnoRuntime.queryInterface( XOutputStream.class, this );
}
// XInputStream
public synchronized int readBytes( byte[][] aData, int nBytesToRead )
throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
{
int nRead = 0;
if ( m_pBytes != null && nBytesToRead > 0 )
{
int nAvailable = m_nCurSize - m_nCurPos;
if ( nBytesToRead > nAvailable )
nBytesToRead = nAvailable;
aData[0] = new byte[nBytesToRead];
for ( int nInd = 0; nInd < nBytesToRead; nInd++ )
aData[0][nInd] = m_pBytes[m_nCurPos+nInd];
nRead = nBytesToRead;
m_nCurPos += nRead;
}
else
{
aData[0] = new byte[0];
}
return nRead;
}
public synchronized int readSomeBytes( byte[][] aData, int nMaxBytesToRead )
throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
{
return readBytes( aData, nMaxBytesToRead );
}
public synchronized void skipBytes( int nBytesToSkip )
throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
{
if ( nBytesToSkip < 0 )
throw new com.sun.star.io.IOException(); // illegal argument
if ( m_nCurSize - m_nCurPos > nBytesToSkip )
m_nCurPos += nBytesToSkip;
else
m_nCurPos = m_nCurSize;
}
public synchronized int available()
throws com.sun.star.io.NotConnectedException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
{
return 0;
}
public synchronized void closeInput()
throws com.sun.star.io.NotConnectedException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
{
// no need to do anything
}
// XOutputStream
public synchronized void writeBytes( byte[] aData )
throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
{
if ( m_pBytes != null && aData.length > 0 )
{
if ( aData.length > m_nMaxSize - m_nCurPos )
throw new com.sun.star.io.IOException();
for ( int nInd = 0; nInd < aData.length; nInd++ )
m_pBytes[m_nCurPos+nInd] = aData[nInd];
m_nCurPos += aData.length;
if ( m_nCurPos > m_nCurSize )
m_nCurSize = m_nCurPos;
}
}
public synchronized void flush()
throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
{
// nothing to do
}
public synchronized void closeOutput()
throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
{
// nothing to do
}
// XTruncate
public synchronized void truncate()
throws com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
{
m_nCurSize = 0;
m_nCurPos = 0;
}
// XSeekable
public synchronized void seek( long location )
throws com.sun.star.lang.IllegalArgumentException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
{
if ( location > (long)m_nCurSize )
throw new com.sun.star.lang.IllegalArgumentException();
m_nCurPos = (int)location;
}
public synchronized long getPosition()
throws com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
{
return (long)m_nCurPos;
}
public synchronized long getLength()
throws com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
{
return (long)m_nCurSize;
}
};
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