git.maemo.org Git - tweakr/blob - tweakr-module-manager.c

   1 /*
   2  * vim:ts=4:sw=4:et:cindent:cino=(0
   3  */
   4
   5 #include <config.h>
   6
   7 #include <string.h>
   8 #include <unistd.h>
   9
  10 #include <gmodule.h>
  11
  12 #include "tweakr-types.h"
  13 #include "libtweakr-section/tweakr-module.h"
  14 #include "tweakr-module-manager.h"
  15
  16
  17 enum
  18 {
  19     PROP_0,
  20     PROP_MODULE_PATH
  21 };
  22
  23
  24 static GObject *
  25 tweakr_module_manager_constructor (GType type,
  26                                          guint n_params,
  27                                          GObjectConstructParam *params);
  28 static void
  29 tweakr_module_manager_finalize (GObject *object);
  30
  31 static void
  32 tweakr_module_manager_get_property (GObject *object,
  33                                           guint param_id,
  34                                           GValue *value,
  35                                           GParamSpec *pspec);
  36
  37 static void
  38 tweakr_module_manager_set_property (GObject *object,
  39                                           guint param_id,
  40                                           const GValue *value,
  41                                           GParamSpec *pspec);
  42
  43 static gboolean
  44 tweakr_module_manager_query_modules
  45     (TweakrModuleManager *manager);
  46
  47
  48 G_DEFINE_TYPE (TweakrModuleManager, tweakr_module_manager,
  49                G_TYPE_OBJECT);
  50
  51
  52 static void
  53 tweakr_module_manager_class_init (TweakrModuleManagerClass *klass)
  54 {
  55     GObjectClass *object_class = G_OBJECT_CLASS (klass);
  56
  57     object_class->constructor  = tweakr_module_manager_constructor;
  58     object_class->finalize     = tweakr_module_manager_finalize;
  59     object_class->get_property = tweakr_module_manager_get_property;
  60     object_class->set_property = tweakr_module_manager_set_property;
  61
  62     g_object_class_install_property
  63         (object_class, PROP_MODULE_PATH,
  64          g_param_spec_string ("module-path",
  65                               "Module Path",
  66                               "The path where to look for modules",
  67                               NULL,
  68                               G_PARAM_READWRITE |
  69                               G_PARAM_CONSTRUCT_ONLY));
  70 }
  71
  72 static void
  73 tweakr_module_manager_init (TweakrModuleManager *manager)
  74 {
  75     manager->module_path = NULL;
  76     manager->modules     = NULL;
  77 }
  78
  79 static GObject *
  80 tweakr_module_manager_constructor (GType type,
  81                                          guint n_params,
  82                                          GObjectConstructParam *params)
  83 {
  84     GObject *object;
  85     TweakrModuleManager *manager;
  86
  87     object = G_OBJECT_CLASS
  88         (tweakr_module_manager_parent_class)->constructor (type,
  89                                                                  n_params,
  90                                                                  params);
  91
  92     manager = TWEAKR_MODULE_MANAGER (object);
  93
  94     if (manager->module_path)
  95         tweakr_module_manager_query_modules (manager);
  96
  97     return object;
  98 }
  99
 100 static void
 101 tweakr_module_manager_finalize (GObject *object)
 102 {
 103     TweakrModuleManager *manager = TWEAKR_MODULE_MANAGER (object);
 104
 105     g_free (manager->module_path);
 106
 107     /* GTypeModules most not be finalized, don't unref them */
 108     g_list_free (manager->modules);
 109
 110     G_OBJECT_CLASS (tweakr_module_manager_parent_class)->
 111         finalize (object);
 112 }
 113
 114 static void
 115 tweakr_module_manager_get_property (GObject *object,
 116                                           guint param_id,
 117                                           GValue *value,
 118                                           GParamSpec *pspec)
 119 {
 120     TweakrModuleManager *manager = TWEAKR_MODULE_MANAGER (object);
 121
 122     switch (param_id)
 123     {
 124         case PROP_MODULE_PATH:
 125             g_value_set_string (value, manager->module_path);
 126             break;
 127         default:
 128             G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 129             break;
 130     }
 131 }
 132
 133 static void
 134 tweakr_module_manager_set_property (GObject *object,
 135                                           guint param_id,
 136                                           const GValue *value,
 137                                           GParamSpec *pspec)
 138 {
 139     TweakrModuleManager *manager = TWEAKR_MODULE_MANAGER (object);
 140
 141     switch (param_id)
 142     {
 143         case PROP_MODULE_PATH:
 144             manager->module_path = g_value_dup_string (value);
 145             break;
 146         default:
 147             G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 148             break;
 149     }
 150 }
 151
 152 static gboolean
 153 tweakr_module_manager_is_valid_module_name (const gchar *name)
 154 {
 155     return g_str_has_suffix (name, ".so");
 156 }
 157
 158 static gboolean
 159 tweakr_module_manager_query_modules (TweakrModuleManager *manager)
 160 {
 161     const gchar *name;
 162     GDir        *dir;
 163     GError      *error = NULL;
 164
 165     dir = g_dir_open (manager->module_path, 0, &error);
 166
 167     if (!dir)
 168     {
 169         g_printerr ("Error while opening module dir: %s\n", error->message);
 170         g_clear_error (&error);
 171         return FALSE;
 172     }
 173
 174     while ((name = g_dir_read_name (dir)))
 175     {
 176         if (tweakr_module_manager_is_valid_module_name (name))
 177         {
 178             TweakrModule *module;
 179             gchar     *path;
 180
 181             path = g_build_filename (manager->module_path, name, NULL);
 182             module = tweakr_module_new (path);
 183
 184             if (! g_type_module_use (G_TYPE_MODULE (module)))
 185             {
 186                 g_printerr ("Failed to load module: %s\n", path);
 187                 g_object_unref (module);
 188                 g_free (path);
 189                 continue;
 190             }
 191
 192             g_free (path);
 193
 194             g_type_module_unuse (G_TYPE_MODULE (module));
 195
 196             manager->modules = g_list_prepend (manager->modules, module);
 197         }
 198     }
 199
 200     g_dir_close (dir);
 201
 202     return TRUE;
 203 }
 204