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/*******************************************************************************
* Copyright (c) 2000, 2011 QNX Software Systems and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.utils.spawner;
import java.io.IOException;
import java.io.OutputStream;
/**
* @noextend This class is not intended to be subclassed by clients.
* @noinstantiate This class is not intended to be instantiated by clients.
*/
public class SpawnerOutputStream extends OutputStream {
private int fd;
/**
* From a Unix valid file descriptor set a Reader.
* @param fd file descriptor.
*/
public SpawnerOutputStream(int fd) {
this.fd = fd;
}
/**
* @see OutputStream#write(byte[], int, int)
*/
@Override
public void write(byte[] b, int off, int len) throws IOException {
if (b == null) {
throw new NullPointerException();
} else if (
(off < 0)
|| (off > b.length)
|| (len < 0)
|| ((off + len) > b.length)
|| ((off + len) < 0)) {
throw new IndexOutOfBoundsException();
} else if (len == 0) {
return;
}
byte[] tmpBuf = new byte[len];
System.arraycopy(b, off, tmpBuf, off, len);
write0(fd, tmpBuf, len);
}
/**
* Implementation of read for the InputStream.
*
* @exception IOException on error.
*/
@Override
public void write(int b) throws IOException {
byte[] buf = new byte[1];
buf[0] = (byte) b;
write(buf, 0, 1);
}
/**
* Close the Reader
* @exception IOException on error.
*/
@Override
public void close() throws IOException {
if (fd == -1)
return;
int status = close0(fd);
if (status == -1)
throw new IOException("close error"); //$NON-NLS-1$
fd = -1;
}
@Override
protected void finalize() throws IOException {
close();
}
private native int write0(int fd, byte[] b, int len) throws IOException;
private native int close0(int fd);
static {
System.loadLibrary("spawner"); //$NON-NLS-1$
}
}
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