Pileus Git - grits/blob - src/gis-prefs.c

   1 /*
   2  * Copyright (C) 2009 Andy Spencer <spenceal@rose-hulman.edu>
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <config.h>
  19
  20 #include <glib.h>
  21 #include "gis-marshal.h"
  22 #include "gis-prefs.h"
  23
  24 enum {
  25         SIG_PREF_CHANGED,
  26         NUM_SIGNALS,
  27 };
  28 static guint signals[NUM_SIGNALS];
  29
  30 /***********
  31  * Methods *
  32  ***********/
  33 GisPrefs *gis_prefs_new(const gchar *config, const gchar *defaults)
  34 {
  35         g_debug("GisPrefs: new - %s, %s", config, defaults);
  36         GisPrefs *self = g_object_new(GIS_TYPE_PREFS, NULL);
  37         if (config)
  38                 self->key_path = g_strdup(config);
  39         else
  40                 self->key_path = g_build_filename(g_get_user_config_dir(),
  41                                 PACKAGE, "config.ini", NULL);
  42         GError *error = NULL;
  43         g_key_file_load_from_file(self->key_file, self->key_path,
  44                         G_KEY_FILE_KEEP_COMMENTS, &error);
  45         if (error && defaults) {
  46                 g_debug("GisPrefs: new - Trying defaults");
  47                 g_clear_error(&error);
  48                 g_key_file_load_from_file(self->key_file, defaults,
  49                                 G_KEY_FILE_KEEP_COMMENTS, &error);
  50         }
  51         if (error) {
  52                 g_debug("GisPrefs: new - Trying GIS defaults");
  53                 g_clear_error(&error);
  54                 gchar *tmp = g_build_filename(PKGDATADIR, "defaults.ini", NULL);
  55                 g_key_file_load_from_file(self->key_file, tmp,
  56                                 G_KEY_FILE_KEEP_COMMENTS, &error);
  57                 g_free(tmp);
  58         }
  59         if (error) {
  60                 g_warning("GisPrefs: new - Unable to load key file `%s': %s",
  61                         self->key_path, error->message);
  62         }
  63         return self;
  64 }
  65
  66 #define make_pref_type(name, c_type, g_type)                                         \
  67 c_type gis_prefs_get_##name##_v(GisPrefs *self,                                      \
  68                 const gchar *group, const gchar *key, GError **_error)               \
  69 {                                                                                    \
  70         GError *error = NULL;                                                        \
  71         c_type value = g_key_file_get_##name(self->key_file, group, key, &error);    \
  72         if (error && error->code != G_KEY_FILE_ERROR_GROUP_NOT_FOUND)                \
  73                 g_warning("GisPrefs: get_value_##name - error getting key %s: %s\n", \
  74                                 key, error->message);                                \
  75         if (error && _error)                                                         \
  76                 *_error = error;                                                     \
  77         return value;                                                                \
  78 }                                                                                    \
  79 c_type gis_prefs_get_##name(GisPrefs *self, const gchar *key, GError **error)        \
  80 {                                                                                    \
  81         gchar **keys  = g_strsplit(key, "/", 2);                                     \
  82         c_type value = gis_prefs_get_##name##_v(self, keys[0], keys[1], error);      \
  83         g_strfreev(keys);                                                            \
  84         return value;                                                                \
  85 }                                                                                    \
  86                                                                                      \
  87 void gis_prefs_set_##name##_v(GisPrefs *self,                                        \
  88                 const gchar *group, const gchar *key, const c_type value)            \
  89 {                                                                                    \
  90         g_key_file_set_##name(self->key_file, group, key, value);                    \
  91         gchar *all = g_strconcat(group, "/", key, NULL);                             \
  92         g_signal_emit(self, signals[SIG_PREF_CHANGED], 0,                            \
  93                         all, g_type, &value);                                        \
  94         g_free(all);                                                                 \
  95 }                                                                                    \
  96 void gis_prefs_set_##name(GisPrefs *self, const gchar *key, const c_type value)      \
  97 {                                                                                    \
  98         gchar **keys = g_strsplit(key, "/", 2);                                      \
  99         gis_prefs_set_##name##_v(self, keys[0], keys[1], value);                     \
 100         g_strfreev(keys);                                                            \
 101 }                                                                                    \
 102
 103 make_pref_type(string,  gchar*,   G_TYPE_STRING)
 104 make_pref_type(boolean, gboolean, G_TYPE_BOOLEAN)
 105 make_pref_type(integer, gint,     G_TYPE_INT)
 106 make_pref_type(double,  gdouble,  G_TYPE_DOUBLE)
 107
 108
 109 /****************
 110  * GObject code *
 111  ****************/
 112 G_DEFINE_TYPE(GisPrefs, gis_prefs, G_TYPE_OBJECT);
 113 static void gis_prefs_init(GisPrefs *self)
 114 {
 115         g_debug("GisPrefs: init");
 116         self->key_file = g_key_file_new();
 117 }
 118 static GObject *gis_prefs_constructor(GType gtype, guint n_properties,
 119                 GObjectConstructParam *properties)
 120 {
 121         g_debug("GisPrefs: constructor");
 122         GObjectClass *parent_class = G_OBJECT_CLASS(gis_prefs_parent_class);
 123         return  parent_class->constructor(gtype, n_properties, properties);
 124 }
 125 static void gis_prefs_dispose(GObject *_self)
 126 {
 127         g_debug("GisPrefs: dispose");
 128         GisPrefs *self = GIS_PREFS(_self);
 129         if (self->key_file) {
 130                 gsize length;
 131                 gchar *dir = g_path_get_dirname(self->key_path);
 132                 g_mkdir_with_parents(dir, 0755);
 133                 gchar *data = g_key_file_to_data(self->key_file, &length, NULL);
 134                 g_file_set_contents(self->key_path, data, length, NULL);
 135                 g_key_file_free(self->key_file);
 136                 g_free(self->key_path);
 137                 g_free(dir);
 138                 g_free(data);
 139                 self->key_file = NULL;
 140         }
 141         G_OBJECT_CLASS(gis_prefs_parent_class)->dispose(_self);
 142 }
 143 static void gis_prefs_finalize(GObject *_self)
 144 {
 145         g_debug("GisPrefs: finalize");
 146         G_OBJECT_CLASS(gis_prefs_parent_class)->finalize(_self);
 147 }
 148 static void gis_prefs_class_init(GisPrefsClass *klass)
 149 {
 150         g_debug("GisPrefs: class_init");
 151         GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
 152         gobject_class->constructor  = gis_prefs_constructor;
 153         gobject_class->dispose      = gis_prefs_dispose;
 154         gobject_class->finalize     = gis_prefs_finalize;
 155         signals[SIG_PREF_CHANGED] = g_signal_new(
 156                         "pref-changed",
 157                         G_TYPE_FROM_CLASS(gobject_class),
 158                         G_SIGNAL_RUN_LAST,
 159                         0,
 160                         NULL,
 161                         NULL,
 162                         gis_cclosure_marshal_VOID__STRING_UINT_POINTER,
 163                         G_TYPE_NONE,
 164                         1,
 165                         G_TYPE_STRING,
 166                         G_TYPE_UINT,
 167                         G_TYPE_POINTER);
 168 }