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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.
*
************************************************************************/
package com.sun.star.lib.uno.adapter;
import java.io.IOException;
import com.sun.star.io.XInputStream;
import java.io.InputStream;
/** The <code>InputStreamToInputXStreamAdapter</code> wraps the
Java <code>InputStream</code> object into a
UNO <code>XInputStream</code> object.
This allows users to access an <code>InputStream</code>
as if it were an <code>XInputStream</code>.
*/
public class InputStreamToXInputStreamAdapter implements XInputStream {
/**
* Internal store to the InputStream
*/
private InputStream iIn;
/**
* Constructor.
*
* @param in The <code>XInputStream</code> to be
* accessed as an <code>InputStream</code>.
*/
public InputStreamToXInputStreamAdapter (InputStream in)
{
iIn = in;
}
public int available() throws
com.sun.star.io.IOException
{
int bytesAvail;
try {
bytesAvail = iIn.available();
} catch (IOException e) {
throw new com.sun.star.io.IOException(e.toString());
}
return(bytesAvail);
}
public void closeInput() throws
com.sun.star.io.IOException
{
try {
iIn.close();
} catch (IOException e) {
throw new com.sun.star.io.IOException(e.toString());
}
}
public int readBytes(byte[][] b, int len) throws
com.sun.star.io.IOException
{
int count = 0;
try {
long bytesRead=0;
if (len >iIn.available()) {
bytesRead = iIn.read(b[0], 0, iIn.available());
}
else{
bytesRead = iIn.read(b[0], 0, len);
}
// Casting bytesRead to an int is okay, since the user can
// only pass in an integer length to read, so the bytesRead
// must <= len.
//
if (bytesRead <= 0) {
return(0);
}
return ((int)bytesRead);
} catch (IOException e) {
throw new com.sun.star.io.IOException("reader error: "+e.toString());
}
}
public int readSomeBytes(byte[][] b, int len) throws
com.sun.star.io.IOException
{
int count = 0;
try {
long bytesRead=0;
if (len >iIn.available()) {
bytesRead = iIn.read(b[0], 0, iIn.available());
}
else{
bytesRead = iIn.read(b[0], 0, len);
}
// Casting bytesRead to an int is okay, since the user can
// only pass in an integer length to read, so the bytesRead
// must <= len.
//
if (bytesRead <= 0) {
return(0);
}
return ((int)bytesRead);
} catch (IOException e) {
throw new com.sun.star.io.IOException("reader error: "+e.toString());
}
}
public void skipBytes(int n) throws
com.sun.star.io.IOException
{
int avail;
int tmpLongVal = n;
int tmpIntVal;
try {
avail = iIn.available();
} catch (IOException e) {
throw new com.sun.star.io.IOException(e.toString());
}
do {
if (tmpLongVal >= Integer.MAX_VALUE) {
tmpIntVal = Integer.MAX_VALUE;
} else {
// Casting is safe here.
tmpIntVal = (int)tmpLongVal;
}
tmpLongVal -= tmpIntVal;
try {
iIn.skip(tmpIntVal);
} catch (IOException e) {
throw new com.sun.star.io.IOException(e.toString());
}
} while (tmpLongVal > 0);
}
}
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