1 /*
   2  * Copyright (c) 1998, 2008, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.tools.extcheck;
  27 
  28 import java.io.*;
  29 
  30 /**
  31  * Main program of extcheck
  32  */
  33 
  34 public final class Main {
  35     public static final String INSUFFICIENT = "Insufficient number of arguments";
  36     public static final String MISSING = "Missing <jar file> argument";
  37     public static final String DOES_NOT_EXIST = "Jarfile does not exist: ";
  38     public static final String EXTRA = "Extra command line argument: ";
  39 
  40     /**
  41      * Terminates with one of the following codes
  42      *  1 A newer (or same version) jar file is already installed
  43      *  0 No newer jar file was found
  44      *  -1 An internal error occurred
  45      */
  46     public static void main(String args[]) {
  47         try {
  48             realMain(args);
  49         } catch (Exception ex) {
  50             System.err.println(ex.getMessage());
  51             System.exit(-1);
  52         }
  53     }
  54 
  55     public static void realMain(String[] args) throws Exception {
  56         if (args.length < 1) {
  57             usage(INSUFFICIENT);
  58         }
  59         int argIndex = 0;
  60         boolean verboseFlag = false;
  61         if (args[argIndex].equals("-verbose")) {
  62             verboseFlag = true;
  63             argIndex++;
  64             if (argIndex >= args.length) {
  65                 usage(MISSING);
  66             }
  67         }
  68         String jarName = args[argIndex];
  69         argIndex++;
  70         File jarFile = new File(jarName);
  71         if (!jarFile.exists()){
  72             usage(DOES_NOT_EXIST + jarName);
  73         }
  74         if (argIndex < args.length) {
  75             usage(EXTRA + args[argIndex]);
  76         }
  77         ExtCheck jt = ExtCheck.create(jarFile,verboseFlag);
  78         boolean result = jt.checkInstalledAgainstTarget();
  79         if (result) {
  80             System.exit(0);
  81         } else {
  82             System.exit(1);
  83         }
  84     }
  85 
  86     private static void usage(String msg) throws Exception {
  87         throw new Exception(msg + "\nUsage: extcheck [-verbose] <jar file>");
  88     }
  89 }
  90