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

   1 /*
   2  * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
   3  *
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or
   7  * without modification, are permitted provided that the following
   8  * conditions are met:
   9  *
  10  * - Redistributions of source code must retain the above copyright
  11  *   notice, this list of conditions and the following disclaimer.
  12  *
  13  * - Redistributions in binary form must reproduce the above
  14  *   copyright notice, this list of conditions and the following
  15  *   disclaimer in the documentation and/or other materials provided
  16  *   with the distribution.
  17  *
  18  * - Neither the name of the Git Development Community nor the
  19  *   names of its contributors may be used to endorse or promote
  20  *   products derived from this software without specific prior
  21  *   written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  24  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  25  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  26  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  28  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  29  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  30  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  31  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  32  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  33  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  35  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  */
  37
  38 package org.spearce.jgit.pgm;
  39
  40 import java.util.List;
  41
  42 import org.kohsuke.args4j.Argument;
  43 import org.kohsuke.args4j.Option;
  44 import org.spearce.jgit.lib.Constants;
  45 import org.spearce.jgit.lib.RefUpdate;
  46 import org.spearce.jgit.lib.TextProgressMonitor;
  47 import org.spearce.jgit.transport.FetchResult;
  48 import org.spearce.jgit.transport.RefSpec;
  49 import org.spearce.jgit.transport.TrackingRefUpdate;
  50 import org.spearce.jgit.transport.Transport;
  51
  52 @Command(common = true, usage = "Update remote refs from another repository")
  53 class Fetch extends TextBuiltin {
  54         @Option(name = "--verbose", aliases = { "-v" }, usage = "be more verbose")
  55         private boolean verbose;
  56
  57         @Option(name = "--fsck", usage = "perform fsck style checks on receive")
  58         private Boolean fsck;
  59
  60         @Option(name = "--no-fsck")
  61         void nofsck(final boolean ignored) {
  62                 fsck = Boolean.FALSE;
  63         }
  64
  65         @Option(name = "--thin", usage = "fetch thin pack")
  66         private Boolean thin;
  67
  68         @Option(name = "--no-thin")
  69         void nothin(final boolean ignored) {
  70                 thin = Boolean.FALSE;
  71         }
  72
  73         @Argument(index = 0, metaVar = "uri-ish")
  74         private String remote = "origin";
  75
  76         @Argument(index = 1, metaVar = "refspec")
  77         private List<RefSpec> toget;
  78
  79         @Override
  80         protected void run() throws Exception {
  81                 final Transport tn = Transport.open(db, remote);
  82                 if (fsck != null)
  83                         tn.setCheckFetchedObjects(fsck.booleanValue());
  84                 if (thin != null)
  85                         tn.setFetchThin(thin.booleanValue());
  86                 final FetchResult r;
  87                 try {
  88                         r = tn.fetch(new TextProgressMonitor(), toget);
  89                         if (r.getTrackingRefUpdates().isEmpty())
  90                                 return;
  91                 } finally {
  92                         tn.close();
  93                 }
  94
  95                 boolean shownURI = false;
  96                 for (final TrackingRefUpdate u : r.getTrackingRefUpdates()) {
  97                         if (!verbose && u.getResult() == RefUpdate.Result.NO_CHANGE)
  98                                 continue;
  99
 100                         final char type = shortTypeOf(u.getResult());
 101                         final String longType = longTypeOf(u);
 102                         final String src = abbreviateRef(u.getRemoteName(), false);
 103                         final String dst = abbreviateRef(u.getLocalName(), true);
 104
 105                         if (!shownURI) {
 106                                 out.print("From ");
 107                                 out.print(tn.getURI());
 108                                 out.println();
 109                                 shownURI = true;
 110                         }
 111
 112                         out.format(" %c %-17s %-10s -> %s", type, longType, src, dst);
 113                         out.println();
 114                 }
 115         }
 116
 117         private String longTypeOf(final TrackingRefUpdate u) {
 118                 final RefUpdate.Result r = u.getResult();
 119                 if (r == RefUpdate.Result.LOCK_FAILURE)
 120                         return "[lock fail]";
 121
 122                 if (r == RefUpdate.Result.IO_FAILURE)
 123                         return "[i/o error]";
 124
 125                 if (r == RefUpdate.Result.NEW) {
 126                         if (u.getRemoteName().startsWith(Constants.R_HEADS))
 127                                 return "[new branch]";
 128                         else if (u.getLocalName().startsWith(Constants.R_TAGS))
 129                                 return "[new tag]";
 130                         return "[new]";
 131                 }
 132
 133                 if (r == RefUpdate.Result.FORCED) {
 134                         final String aOld = u.getOldObjectId().abbreviate(db);
 135                         final String aNew = u.getNewObjectId().abbreviate(db);
 136                         return aOld + "..." + aNew;
 137                 }
 138
 139                 if (r == RefUpdate.Result.FAST_FORWARD) {
 140                         final String aOld = u.getOldObjectId().abbreviate(db);
 141                         final String aNew = u.getNewObjectId().abbreviate(db);
 142                         return aOld + ".." + aNew;
 143                 }
 144
 145                 if (r == RefUpdate.Result.REJECTED)
 146                         return "[rejected]";
 147                 if (r == RefUpdate.Result.NO_CHANGE)
 148                         return "[up to date]";
 149                 return "[" + r.name() + "]";
 150         }
 151
 152         private static char shortTypeOf(final RefUpdate.Result r) {
 153                 if (r == RefUpdate.Result.LOCK_FAILURE)
 154                         return '!';
 155                 if (r == RefUpdate.Result.IO_FAILURE)
 156                         return '!';
 157                 if (r == RefUpdate.Result.NEW)
 158                         return '*';
 159                 if (r == RefUpdate.Result.FORCED)
 160                         return '+';
 161                 if (r == RefUpdate.Result.FAST_FORWARD)
 162                         return ' ';
 163                 if (r == RefUpdate.Result.REJECTED)
 164                         return '!';
 165                 if (r == RefUpdate.Result.NO_CHANGE)
 166                         return '=';
 167                 return ' ';
 168         }
 169 }