src/test/java/org/apache/commons/compress/archivers/CpioTestCase.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
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package org.apache.commons.compress.archivers;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.commons.compress.AbstractTestCase;
import org.apache.commons.compress.archivers.cpio.CpioArchiveEntry;
import org.apache.commons.compress.utils.IOUtils;

public final class CpioTestCase extends AbstractTestCase {

	public void testCpioArchiveCreation() throws Exception {
		final File output = new File(dir, "bla.cpio");
		
		final File file1 = getFile("test1.xml");
		final File file2 = getFile("test2.xml");
		
		final OutputStream out = new FileOutputStream(output);
        final ArchiveOutputStream os = new ArchiveStreamFactory().createArchiveOutputStream("cpio", out);
		os.putArchiveEntry(new CpioArchiveEntry("test1.xml", file1.length()));
		IOUtils.copy(new FileInputStream(file1), os);
		os.closeArchiveEntry();
		
		os.putArchiveEntry(new CpioArchiveEntry("test2.xml", file2.length()));
		IOUtils.copy(new FileInputStream(file2), os);
		os.closeArchiveEntry();
		
		os.close();
	}

	public void testCpioUnarchive() throws Exception {
		final File output = new File(dir, "bla.cpio");
		{
			final File file1 = getFile("test1.xml");
			final File file2 = getFile("test2.xml");
			
			final OutputStream out = new FileOutputStream(output);
	        final ArchiveOutputStream os = new ArchiveStreamFactory().createArchiveOutputStream("cpio", out);
			os.putArchiveEntry(new CpioArchiveEntry("test1.xml", file1.length()));
			IOUtils.copy(new FileInputStream(file1), os);
			os.closeArchiveEntry();
			
			os.putArchiveEntry(new CpioArchiveEntry("test2.xml", file2.length()));
			IOUtils.copy(new FileInputStream(file2), os);
			os.closeArchiveEntry();
			os.close();
		}
		
		// Unarchive Operation
		final File input = output;
		final InputStream is = new FileInputStream(input);
		final ArchiveInputStream in = new ArchiveStreamFactory().createArchiveInputStream("cpio", is);
		final CpioArchiveEntry entry = (CpioArchiveEntry)in.getNextEntry();
		
		File target = new File(dir, entry.getName());
        final OutputStream out = new FileOutputStream(target);
        
        IOUtils.copy(in, out);
    
        out.close();
        in.close();
	}

}