213 lines
6 KiB
Java
213 lines
6 KiB
Java
/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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package complex.storages;
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import com.sun.star.uno.XInterface;
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import com.sun.star.lang.XMultiServiceFactory;
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import com.sun.star.lang.XSingleServiceFactory;
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import com.sun.star.bridge.XUnoUrlResolver;
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import com.sun.star.uno.UnoRuntime;
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import com.sun.star.uno.XInterface;
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import com.sun.star.io.XStream;
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import com.sun.star.io.XInputStream;
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import com.sun.star.io.XOutputStream;
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import com.sun.star.io.XTruncate;
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import com.sun.star.io.XSeekable;
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public class BorderedStream
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implements XStream, XInputStream, XOutputStream, XTruncate, XSeekable
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{
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int m_nMaxSize;
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int m_nCurSize;
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int m_nCurPos;
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byte m_pBytes[];
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public BorderedStream( int nMaxSize )
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{
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m_nMaxSize = nMaxSize;
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m_nCurSize = 0;
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m_nCurPos = 0;
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m_pBytes = new byte[m_nMaxSize];
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}
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// XStream
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public synchronized XInputStream getInputStream()
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throws com.sun.star.uno.RuntimeException
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{
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return (XInputStream)UnoRuntime.queryInterface( XInputStream.class, this );
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}
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public synchronized XOutputStream getOutputStream()
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throws com.sun.star.uno.RuntimeException
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{
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return (XOutputStream)UnoRuntime.queryInterface( XOutputStream.class, this );
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}
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// XInputStream
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public synchronized int readBytes( byte[][] aData, int nBytesToRead )
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throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
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{
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int nRead = 0;
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if ( m_pBytes != null && nBytesToRead > 0 )
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{
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int nAvailable = m_nCurSize - m_nCurPos;
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if ( nBytesToRead > nAvailable )
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nBytesToRead = nAvailable;
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aData[0] = new byte[nBytesToRead];
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for ( int nInd = 0; nInd < nBytesToRead; nInd++ )
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aData[0][nInd] = m_pBytes[m_nCurPos+nInd];
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nRead = nBytesToRead;
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m_nCurPos += nRead;
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}
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else
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{
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aData[0] = new byte[0];
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}
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return nRead;
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}
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public synchronized int readSomeBytes( byte[][] aData, int nMaxBytesToRead )
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throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
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{
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return readBytes( aData, nMaxBytesToRead );
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}
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public synchronized void skipBytes( int nBytesToSkip )
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throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
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{
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if ( nBytesToSkip < 0 )
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throw new com.sun.star.io.IOException(); // illegal argument
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if ( m_nCurSize - m_nCurPos > nBytesToSkip )
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m_nCurPos += nBytesToSkip;
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else
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m_nCurPos = m_nCurSize;
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}
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public synchronized int available()
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throws com.sun.star.io.NotConnectedException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
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{
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return 0;
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}
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public synchronized void closeInput()
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throws com.sun.star.io.NotConnectedException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
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{
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// no need to do anything
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}
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// XOutputStream
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public synchronized void writeBytes( byte[] aData )
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throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
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{
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if ( m_pBytes != null && aData.length > 0 )
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{
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if ( aData.length > m_nMaxSize - m_nCurPos )
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throw new com.sun.star.io.IOException();
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for ( int nInd = 0; nInd < aData.length; nInd++ )
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m_pBytes[m_nCurPos+nInd] = aData[nInd];
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m_nCurPos += aData.length;
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if ( m_nCurPos > m_nCurSize )
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m_nCurSize = m_nCurPos;
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}
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}
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public synchronized void flush()
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throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
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{
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// nothing to do
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}
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public synchronized void closeOutput()
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throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
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{
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// nothing to do
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}
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// XTruncate
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public synchronized void truncate()
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throws com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
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{
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m_nCurSize = 0;
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m_nCurPos = 0;
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}
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// XSeekable
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public synchronized void seek( long location )
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throws com.sun.star.lang.IllegalArgumentException, com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
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{
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if ( location > (long)m_nCurSize )
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throw new com.sun.star.lang.IllegalArgumentException();
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m_nCurPos = (int)location;
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}
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public synchronized long getPosition()
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throws com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
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{
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return (long)m_nCurPos;
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}
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public synchronized long getLength()
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throws com.sun.star.io.IOException, com.sun.star.uno.RuntimeException
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{
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return (long)m_nCurSize;
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}
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};
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