plugins/git/git-tag-list-command.c

   1 /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
   2 /*
   3  * anjuta
   4  * Copyright (C) James Liggett 2008 <jrliggett@cox.net>
   5  *
   6  * anjuta is free software.
   7  *
   8  * You may redistribute it and/or modify it under the terms of the
   9  * GNU General Public License, as published by the Free Software
  10  * Foundation; either version 2 of the License, or (at your option)
  11  * any later version.
  12  *
  13  * anjuta is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  16  * See the GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with anjuta.  If not, write to:
  20  *      The Free Software Foundation, Inc.,
  21  *      51 Franklin Street, Fifth Floor
  22  *      Boston, MA  02110-1301, USA.
  23  */
  24
  25 #include "git-tag-list-command.h"
  26
  27 struct _GitTagListCommandPriv
  28 {
  29         GFileMonitor *tags_monitor;
  30         GFileMonitor *packed_refs_monitor;
  31 };
  32
  33 G_DEFINE_TYPE (GitTagListCommand, git_tag_list_command, GIT_TYPE_RAW_OUTPUT_COMMAND);
  34
  35 static void
  36 git_tag_list_command_init (GitTagListCommand *self)
  37 {
  38         self->priv = g_new0 (GitTagListCommandPriv, 1);
  39 }
  40
  41 static void
  42 git_tag_list_command_finalize (GObject *object)
  43 {
  44         GitTagListCommand *self;
  45
  46         self = GIT_TAG_LIST_COMMAND (object);
  47
  48         anjuta_command_stop_automatic_monitor (ANJUTA_COMMAND (object));
  49         g_free (self->priv);
  50
  51         G_OBJECT_CLASS (git_tag_list_command_parent_class)->finalize (object);
  52 }
  53
  54 static guint
  55 git_tag_list_command_run (AnjutaCommand *command)
  56 {
  57         git_command_add_arg (GIT_COMMAND (command), "tag");
  58
  59         return 0;
  60 }
  61
  62 static void
  63 on_file_monitor_changed (GFileMonitor *monitor, GFile *file, GFile *other_file,
  64                          GFileMonitorEvent event, AnjutaCommand *command)
  65 {
  66         if (event == G_FILE_MONITOR_EVENT_CREATED ||
  67             event == G_FILE_MONITOR_EVENT_DELETED)
  68         {
  69                 anjuta_command_start (command);
  70         }
  71 }
  72
  73 static gboolean
  74 git_tag_list_command_start_automatic_monitor (AnjutaCommand *command)
  75 {
  76         GitTagListCommand *self;
  77         gchar *working_directory;
  78         gchar *git_tags_path;
  79         gchar *git_packed_refs_path;
  80         GFile *git_packed_refs_file;
  81         GFile *git_tags_file;
  82
  83         self = GIT_TAG_LIST_COMMAND (command);
  84
  85         g_object_get (G_OBJECT (self), "working-directory", &working_directory,
  86                       NULL);
  87
  88         /* Git keeps tag info in two places: as individual files in .git/refs/tags
  89          * and as a file in .git/packed-refs. These "packed refs"
  90          * are used in cases where repositories might have a lot of tags, as having
  91          * to go through tons of individual files is can be a large performance
  92          * drain. From what I can tell, tags created with git tag get their own
  93          * file, while tags that are fetched from remote repositories are packed
  94          * automatically. */
  95         git_tags_path = g_strjoin (G_DIR_SEPARATOR_S,
  96                                    working_directory,
  97                                    ".git",
  98                                    "refs",
  99                                    "tags",
 100                                    NULL);
 101         git_packed_refs_path = g_strjoin (G_DIR_SEPARATOR_S,
 102                                           working_directory,
 103                                           ".git",
 104                                           "packed-refs",
 105                                           NULL);
 106
 107         git_tags_file = g_file_new_for_path (git_tags_path);
 108         git_packed_refs_file = g_file_new_for_path (git_packed_refs_path);
 109
 110         self->priv->tags_monitor = g_file_monitor_directory (git_tags_file, 0, NULL,
 111                                                              NULL);
 112         self->priv->packed_refs_monitor = g_file_monitor_file (git_packed_refs_file,
 113                                                                0, NULL, NULL);
 114
 115         g_signal_connect (G_OBJECT (self->priv->tags_monitor), "changed",
 116                           G_CALLBACK (on_file_monitor_changed),
 117                           command);
 118
 119         g_signal_connect (G_OBJECT (self->priv->packed_refs_monitor), "changed",
 120                           G_CALLBACK (on_file_monitor_changed),
 121                           command);
 122
 123         g_free (working_directory);
 124         g_free (git_tags_path);
 125         g_free (git_packed_refs_path);
 126         g_object_unref (git_packed_refs_file);
 127         g_object_unref (git_tags_file);
 128
 129         return TRUE;
 130 }
 131
 132 static void
 133 git_tag_list_command_stop_automatic_monitor (AnjutaCommand *command)
 134 {
 135         GitTagListCommand *self;
 136
 137         self = GIT_TAG_LIST_COMMAND (command);
 138
 139         if (self->priv->tags_monitor)
 140         {
 141                 g_file_monitor_cancel (self->priv->tags_monitor);
 142                 g_object_unref (self->priv->tags_monitor);
 143                 self->priv->tags_monitor = NULL;
 144         }
 145
 146         if (self->priv->packed_refs_monitor)
 147         {
 148                 g_file_monitor_cancel (self->priv->packed_refs_monitor);
 149                 g_object_unref (self->priv->packed_refs_monitor);
 150                 self->priv->packed_refs_monitor = NULL;
 151         }
 152 }
 153
 154 static void
 155 git_tag_list_command_class_init (GitTagListCommandClass *klass)
 156 {
 157         GObjectClass* object_class = G_OBJECT_CLASS (klass);
 158         AnjutaCommandClass *command_class = ANJUTA_COMMAND_CLASS (klass);
 159
 160         object_class->finalize = git_tag_list_command_finalize;
 161         command_class->run = git_tag_list_command_run;
 162         command_class->start_automatic_monitor = git_tag_list_command_start_automatic_monitor;
 163         command_class->stop_automatic_monitor = git_tag_list_command_stop_automatic_monitor;
 164 }
 165
 166
 167 GitTagListCommand *
 168 git_tag_list_command_new (const gchar *working_directory)
 169 {
 170         return g_object_new (GIT_TYPE_TAG_LIST_COMMAND,
 171                                                  "working-directory", working_directory,
 172                                                  "single-line-output", TRUE,
 173                                                  "strip-newlines", TRUE,
 174                                                  NULL);
 175 }