org.spearce.jgit/src/org/spearce/jgit/pgm/Main.java

   1 /*
   2  * Copyright (C) 2006, Robin Rosenberg <robin.rosenberg@dewire.com>
   3  * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
   4  *
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or
   8  * without modification, are permitted provided that the following
   9  * conditions are met:
  10  *
  11  * - Redistributions of source code must retain the above copyright
  12  *   notice, this list of conditions and the following disclaimer.
  13  *
  14  * - Redistributions in binary form must reproduce the above
  15  *   copyright notice, this list of conditions and the following
  16  *   disclaimer in the documentation and/or other materials provided
  17  *   with the distribution.
  18  *
  19  * - Neither the name of the Git Development Community nor the
  20  *   names of its contributors may be used to endorse or promote
  21  *   products derived from this software without specific prior
  22  *   written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  25  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  26  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  27  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  29  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  30  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  31  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  32  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  33  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  34  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  36  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37  */
  38
  39 package org.spearce.jgit.pgm;
  40
  41 import java.io.File;
  42 import java.net.MalformedURLException;
  43 import java.net.URL;
  44 import java.util.Arrays;
  45
  46 import org.spearce.jgit.awtui.AwtAuthenticator;
  47 import org.spearce.jgit.errors.TransportException;
  48 import org.spearce.jgit.lib.Repository;
  49
  50 /** Command line entry point. */
  51 public class Main {
  52         private static boolean showStackTrace;
  53
  54         /**
  55          * Execute the command line.
  56          *
  57          * @param argv
  58          *            arguments.
  59          */
  60         public static void main(final String[] argv) {
  61                 try {
  62                         AwtAuthenticator.install();
  63                         configureHttpProxy();
  64                         execute(argv);
  65                 } catch (Die err) {
  66                         System.err.println("fatal: " + err.getMessage());
  67                         if (showStackTrace)
  68                                 err.printStackTrace();
  69                         System.exit(128);
  70                 } catch (Exception err) {
  71                         if (!showStackTrace && err.getCause() != null
  72                                         && err instanceof TransportException)
  73                                 System.err.println("fatal: " + err.getCause().getMessage());
  74
  75                         if (err.getClass().getName().startsWith("org.spearce.jgit.errors.")) {
  76                                 System.err.println("fatal: " + err.getMessage());
  77                                 if (showStackTrace)
  78                                         err.printStackTrace();
  79                                 System.exit(128);
  80                         }
  81                         err.printStackTrace();
  82                         System.exit(1);
  83                 }
  84         }
  85
  86         private static void execute(final String[] argv) throws Exception {
  87                 int argi = 0;
  88                 String gitdir = ".git";
  89
  90                 for (; argi < argv.length; argi++) {
  91                         final String arg = argv[argi];
  92                         if (arg.startsWith("--git-dir="))
  93                                 gitdir = arg.substring("--git-dir=".length());
  94                         else if (arg.equals("--show-stack-trace"))
  95                                 showStackTrace = true;
  96                         else if (arg.startsWith("--"))
  97                                 usage();
  98                         else
  99                                 break;
 100                 }
 101
 102                 if (argi == argv.length)
 103                         usage();
 104                 final TextBuiltin cmd = createCommand(argv[argi++]);
 105                 cmd.db = new Repository(new File(gitdir));
 106                 try {
 107                         cmd.execute(subarray(argv, argi));
 108                 } finally {
 109                         if (cmd.out != null)
 110                                 cmd.out.flush();
 111                 }
 112         }
 113
 114         private static String[] subarray(final String[] argv, final int i) {
 115                 return Arrays.asList(argv).subList(i, argv.length).toArray(
 116                                 new String[0]);
 117         }
 118
 119         private static TextBuiltin createCommand(final String name) {
 120                 final StringBuilder s = new StringBuilder();
 121                 s.append(mypackage());
 122                 s.append('.');
 123                 boolean upnext = true;
 124                 for (int i = 0; i < name.length(); i++) {
 125                         final char c = name.charAt(i);
 126                         if (c == '-') {
 127                                 upnext = true;
 128                                 continue;
 129                         }
 130                         if (upnext)
 131                                 s.append(Character.toUpperCase(c));
 132                         else
 133                                 s.append(c);
 134                         upnext = false;
 135                 }
 136                 try {
 137                         return (TextBuiltin) Class.forName(s.toString()).newInstance();
 138                 } catch (Exception e) {
 139                         System.err.println("error: " + name + " is not a jgit command.");
 140                         System.exit(1);
 141                         return null;
 142                 }
 143         }
 144
 145         private static String mypackage() {
 146                 final String p = Main.class.getName();
 147                 final int dot = p.lastIndexOf('.');
 148                 return p.substring(0, dot);
 149         }
 150
 151         private static void usage() {
 152                 System.err.println("jgit [--git-dir=path] cmd ...");
 153                 System.exit(1);
 154         }
 155
 156         private static void configureHttpProxy() {
 157                 final String s = System.getenv("http_proxy");
 158                 if (s == null || s.equals(""))
 159                         return;
 160
 161                 final URL u;
 162                 try {
 163                         u = new URL(s);
 164                 } catch (MalformedURLException e) {
 165                         throw new Die("Invalid http_proxy: " + s + ": " + e.getMessage());
 166                 }
 167                 if (!"http".equals(u.getProtocol()))
 168                         throw new Die("Invalid http_proxy: " + s + ": Only http supported.");
 169
 170                 final String proxyHost = u.getHost();
 171                 final int proxyPort = u.getPort();
 172
 173                 System.setProperty("http.proxyHost", proxyHost);
 174                 if (proxyPort > 0)
 175                         System.setProperty("http.proxyPort", String.valueOf(proxyPort));
 176
 177                 final String userpass = u.getUserInfo();
 178                 if (userpass != null && userpass.contains(":")) {
 179                         final int c = userpass.indexOf(':');
 180                         final String user = userpass.substring(0, c);
 181                         final String pass = userpass.substring(c + 1);
 182                         AwtAuthenticator.add(new AwtAuthenticator.CachedAuthentication(
 183                                         proxyHost, proxyPort, user, pass));
 184                 }
 185         }
 186 }