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74 lines
2.7 KiB
74 lines
2.7 KiB
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.harmony.unpack200;
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import java.io.BufferedInputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.jar.JarOutputStream;
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import java.util.jar.Pack200.Unpacker;
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import org.apache.harmony.pack200.Pack200Adapter;
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import org.apache.harmony.pack200.Pack200Exception;
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/**
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* This class provides the binding between the standard Pack200 interface and
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* the internal interface for (un)packing. As this uses generics for the
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* SortedMap, this class must be compiled and run on a Java 1.5 system. However,
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* Java 1.5 is not necessary to use the internal libraries for unpacking.
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*/
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public class Pack200UnpackerAdapter extends Pack200Adapter implements Unpacker {
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/*
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* (non-Javadoc)
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*
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* @see java.util.jar.Pack200.Unpacker#unpack(java.io.InputStream,
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* java.util.jar.JarOutputStream)
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*/
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public void unpack(InputStream in, JarOutputStream out) throws IOException {
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if (in == null || out == null)
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throw new IllegalArgumentException(
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"Must specify both input and output streams");
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completed(0);
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try {
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new Archive(in, out).unpack();
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} catch (Pack200Exception e) {
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throw new IOException("Failed to unpack Jar:" + String.valueOf(e));
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}
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completed(1);
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in.close();
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}
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/*
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* (non-Javadoc)
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*
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* @see java.util.jar.Pack200.Unpacker#unpack(java.io.File,
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* java.util.jar.JarOutputStream)
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*/
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public void unpack(File file, JarOutputStream out) throws IOException {
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if (file == null || out == null)
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throw new IllegalArgumentException(
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"Must specify both input and output streams");
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int size = (int) file.length();
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int bufferSize = (size > 0 && size < DEFAULT_BUFFER_SIZE ? size
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: DEFAULT_BUFFER_SIZE);
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InputStream in = new BufferedInputStream(new FileInputStream(file),
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bufferSize);
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unpack(in, out);
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}
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}
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