diff options
Diffstat (limited to 'src/com/android/gallery3d/util/InterruptableOutputStream.java')
-rw-r--r-- | src/com/android/gallery3d/util/InterruptableOutputStream.java | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/util/InterruptableOutputStream.java b/src/com/android/gallery3d/util/InterruptableOutputStream.java new file mode 100644 index 000000000..1ab62ab98 --- /dev/null +++ b/src/com/android/gallery3d/util/InterruptableOutputStream.java @@ -0,0 +1,67 @@ +/* + * 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; + } +} |