Mega Code Archive
This input stream wrapper closes the base input stream when fully read
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/*
* Copyright 2004-2011 H2 Group. Multiple-Licensed under the H2 License,
* Version 1.0, and under the Eclipse Public License, Version 1.0
* (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
//package org.h2.util;
import java.io.IOException;
import java.io.InputStream;
/**
* This input stream wrapper closes the base input stream when fully read.
*/
public class AutoCloseInputStream extends InputStream {
private final InputStream in;
private boolean closed;
/**
* Create a new input stream.
*
* @param in the input stream
*/
public AutoCloseInputStream(InputStream in) {
this.in = in;
}
private int autoClose(int x) throws IOException {
if (x < 0) {
close();
}
return x;
}
public void close() throws IOException {
if (!closed) {
in.close();
closed = true;
}
}
public int read(byte[] b, int off, int len) throws IOException {
return closed ? -1 : autoClose(in.read(b, off, len));
}
public int read(byte[] b) throws IOException {
return closed ? -1 : autoClose(in.read(b));
}
public int read() throws IOException {
return closed ? -1 : autoClose(in.read());
}
}
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