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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.gallery3d.util;
import com.android.gallery3d.common.Utils;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.io.OutputStream;
public class InterruptableOutputStream extends OutputStream {
private static final int MAX_WRITE_BYTES = 4096;
private OutputStream mOutputStream;
private volatile boolean mIsInterrupted = false;
public InterruptableOutputStream(OutputStream outputStream) {
mOutputStream = Utils.checkNotNull(outputStream);
}
@Override
public void write(int oneByte) throws IOException {
if (mIsInterrupted) throw new InterruptedIOException();
mOutputStream.write(oneByte);
}
@Override
public void write(byte[] buffer, int offset, int count) throws IOException {
int end = offset + count;
while (offset < end) {
if (mIsInterrupted) throw new InterruptedIOException();
int bytesCount = Math.min(MAX_WRITE_BYTES, end - offset);
mOutputStream.write(buffer, offset, bytesCount);
offset += bytesCount;
}
}
@Override
public void close() throws IOException {
mOutputStream.close();
}
@Override
public void flush() throws IOException {
if (mIsInterrupted) throw new InterruptedIOException();
mOutputStream.flush();
}
public void interrupt() {
mIsInterrupted = true;
}
}
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