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/*
* 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 under the License.
*
*/
package org.apache.commons.compress.archivers.tar;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
/**
* Simple command line application that lists the contents of a tar archive.
*
* <p>The name of the archive must be given as a command line argument.</p>
* <p>The optional second argument specifies the encoding to assume for file names.</p>
*
* @since 1.11
*/
public final class TarLister {
public static void main(final String[] args) throws Exception {
if (args.length == 0) {
usage();
return;
}
System.out.println("Analysing " + args[0]);
final File f = new File(args[0]);
if (!f.isFile()) {
System.err.println(f + " doesn't exist or is a directory");
}
final InputStream fis = new BufferedInputStream(new FileInputStream(f));
TarArchiveInputStream ais;
if (args.length > 1) {
ais = new TarArchiveInputStream(fis, args[1]);
} else {
ais = new TarArchiveInputStream(fis);
}
System.out.println("Created " + ais.toString());
TarArchiveEntry ae;
while((ae=ais.getNextTarEntry()) != null){
log(ae);
}
ais.close();
fis.close();
}
private static void usage() {
System.out.println("Parameters: archive-name [encoding]");
}
private static void log(final TarArchiveEntry ae) {
final StringBuilder sb = new StringBuilder(Integer.toOctalString(ae.getMode()))
.append(" ");
String name = ae.getUserName();
if (name != null && name.length() > 0) {
sb.append(name);
} else {
sb.append(ae.getLongUserId());
}
sb.append("/");
name = ae.getGroupName();
if (name != null && name.length() > 0) {
sb.append(name);
} else {
sb.append(ae.getLongGroupId());
}
sb.append(" ");
if (ae.isSparse()) {
sb.append(ae.getRealSize());
} else if (ae.isCharacterDevice() || ae.isBlockDevice()) {
sb.append(ae.getDevMajor()).append(",").append(ae.getDevMinor());
} else {
sb.append(ae.getSize());
}
sb.append(" ").append(ae.getLastModifiedDate()).append(" ");
sb.append(ae.getName());
if (ae.isSymbolicLink() || ae.isLink()) {
if (ae.isSymbolicLink()) {
sb.append(" -> ");
} else {
sb.append(" link to ");
}
sb.append(ae.getLinkName());
}
if (ae.isSparse()) {
sb.append(" (sparse)");
}
System.out.println(sb);
}
}
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