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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 .
*/
/*
* ByteArrayXInputStram.java
*
* Created on 10. April 2003, 15:45
*/
package com.sun.star.lib.uno.adapter;
/**
*
* @author lo119109
*/
import com.sun.star.io.XInputStream;
import com.sun.star.io.XSeekable;
import com.sun.star.lib.uno.helper.ComponentBase;
public class ByteArrayToXInputStreamAdapter
extends ComponentBase
implements XInputStream, XSeekable
{
byte[] m_bytes;
int m_length;
int m_pos;
boolean m_open;
/** Creates a new instance of ByteArrayXInputStram */
public ByteArrayToXInputStreamAdapter(byte[] bytes) {
init(bytes);
}
public void init(byte[] bytes) {
// System.err.println("ByteArrayXInputStream");
m_bytes = bytes;
m_length = bytes.length;
m_pos = 0;
m_open = true;
}
private void _check() throws com.sun.star.io.NotConnectedException, com.sun.star.io.IOException {
if (m_bytes == null) {
// System.err.println("check failed no bytes!");
throw new com.sun.star.io.NotConnectedException("no bytes");
}
if(!m_open) {
// System.err.println("check failed: closed");
throw new com.sun.star.io.IOException("input closed");
}
}
public int available() throws com.sun.star.io.NotConnectedException, com.sun.star.io.IOException {
_check();
long a = m_length - m_pos;
if (a != (int)a)
throw new com.sun.star.io.IOException("integer overflow");
else {
// System.err.println("available() -> "+a);
return (int)a;
}
}
public void closeInput() throws com.sun.star.io.NotConnectedException, com.sun.star.io.IOException {
// System.err.println("closeInput()");
_check();
m_open = false;
}
public int readBytes(byte[][] values, int param) throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException {
// System.err.println("readbytes(..., "+param+")");
_check();
try {
int remain = (m_length - m_pos);
if (param > remain) param = remain;
/* ARGH!!! */
if (values[0] == null){
values[0] = new byte[param];
// System.err.println("allocated new buffer of "+param+" bytes");
}
System.arraycopy(m_bytes, m_pos, values[0], 0, param);
// System.err.println("readbytes() -> "+param);
m_pos += param;
return param;
} catch (ArrayIndexOutOfBoundsException ae) {
// System.err.println("readbytes() -> ArrayIndexOutOfBounds");
ae.printStackTrace();
throw new com.sun.star.io.BufferSizeExceededException("buffer overflow");
} catch (Exception e) {
// System.err.println("readbytes() -> Exception: "+e.getMessage());
e.printStackTrace();
throw new com.sun.star.io.IOException("error accessing buffer");
}
}
public int readSomeBytes(byte[][] values, int param) throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException {
// System.err.println("readSomebytes()");
return readBytes(values, param);
}
public void skipBytes(int param) throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException {
// System.err.println("skipBytes("+param+")");
_check();
if (param > (m_length - m_pos))
throw new com.sun.star.io.BufferSizeExceededException("buffer overflow");
m_pos += param;
}
public long getLength() throws com.sun.star.io.IOException {
// System.err.println("getLength() -> "+m_length);
if (m_bytes != null) return m_length;
else throw new com.sun.star.io.IOException("no bytes");
}
public long getPosition() throws com.sun.star.io.IOException {
// System.err.println("getPosition() -> "+m_pos);
if (m_bytes != null) return m_pos;
else throw new com.sun.star.io.IOException("no bytes");
}
public void seek(long param) throws com.sun.star.lang.IllegalArgumentException, com.sun.star.io.IOException {
// System.err.println("seek("+param+")");
if (m_bytes != null){
if (param < 0 || param > m_length) throw new com.sun.star.lang.IllegalArgumentException("invalid seek position");
else m_pos = (int)param;
}else throw new com.sun.star.io.IOException("no bytes");
}
public void finalize() throws Throwable{
// System.err.println("finalizer called for ByteArrayXInputStream!");
super.finalize();
}
}
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