| /* Lister.java - action to list contents of a jar file |
| Copyright (C) 2006 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.classpath.tools.jar; |
| |
| import java.io.BufferedInputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.text.MessageFormat; |
| import java.util.Date; |
| import java.util.zip.ZipEntry; |
| import java.util.zip.ZipInputStream; |
| |
| public class Lister |
| extends Action |
| { |
| private WorkSet allItems; |
| |
| private long readUntilEnd(InputStream is) throws IOException |
| { |
| byte[] buffer = new byte[5 * 1024]; |
| long result = 0; |
| while (true) |
| { |
| int r = is.read(buffer); |
| if (r == -1) |
| break; |
| result += r; |
| } |
| return result; |
| } |
| |
| private void listJar(ZipInputStream zis, boolean verbose) throws IOException |
| { |
| MessageFormat format = null; |
| if (verbose) |
| format = new MessageFormat(" {0,date,E M dd HH:mm:ss z yyyy} {1}"); |
| while (true) |
| { |
| ZipEntry entry = zis.getNextEntry(); |
| if (entry == null) |
| break; |
| if (! allItems.contains(entry.getName())) |
| continue; |
| if (verbose) |
| { |
| // Read the stream; entry.getSize() is unreliable. |
| // (Also, we're just going to read it anyway.) |
| long size = readUntilEnd(zis); |
| // No easy way to right-justify the size using |
| // MessageFormat -- how odd. |
| String s = " " + size; |
| int index = Math.min(s.length() - 5, 5); |
| System.out.print(s.substring(index)); |
| Object[] values = new Object[] { new Date(entry.getTime()), |
| entry.getName() }; |
| System.out.println(format.format(values)); |
| } |
| else |
| System.out.println(entry.getName()); |
| } |
| } |
| |
| public void run(Main parameters) throws IOException |
| { |
| allItems = new WorkSet(parameters.entries); |
| File file = parameters.archiveFile; |
| ZipInputStream zis; |
| if (file == null || "-".equals(file.getName())) |
| zis = new ZipInputStream(System.in); |
| else |
| zis = new ZipInputStream(new BufferedInputStream(new FileInputStream(file))); |
| listJar(zis, parameters.verbose); |
| } |
| } |