001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 * 017 */ 018 019 package org.apache.commons.compress.archivers; 020 021 import java.io.BufferedInputStream; 022 import java.io.File; 023 import java.io.FileInputStream; 024 import java.io.InputStream; 025 026 import org.apache.commons.compress.archivers.ArchiveEntry; 027 import org.apache.commons.compress.archivers.ArchiveInputStream; 028 import org.apache.commons.compress.archivers.ArchiveStreamFactory; 029 030 /** 031 * Simple command line application that lists the contents of an archive. 032 * 033 * <p>The name of the archive must be given as a command line argument.</p> 034 * <p>The optional second argument defines the archive type, in case the format is not recognised.</p> 035 * 036 * @since Apache Commons Compress 1.1 037 */ 038 public final class Lister { 039 private static final ArchiveStreamFactory factory = new ArchiveStreamFactory(); 040 041 public static void main(String[] args) throws Exception { 042 if (args.length == 0) { 043 usage(); 044 return; 045 } 046 System.out.println("Analysing "+args[0]); 047 File f = new File(args[0]); 048 if (!f.isFile()) { 049 System.err.println(f + " doesn't exist or is a directory"); 050 } 051 InputStream fis = new BufferedInputStream(new FileInputStream(f)); 052 ArchiveInputStream ais; 053 if (args.length > 1) { 054 ais = factory.createArchiveInputStream(args[1], fis); 055 } else { 056 ais = factory.createArchiveInputStream(fis); 057 } 058 System.out.println("Created "+ais.toString()); 059 ArchiveEntry ae; 060 while((ae=ais.getNextEntry()) != null){ 061 System.out.println(ae.getName()); 062 } 063 ais.close(); 064 fis.close(); 065 } 066 067 private static void usage() { 068 System.out.println("Parameters: archive-name [archive-type]"); 069 070 } 071 072 }