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Tweak GSettings key/schema listing APIs

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This commit is contained in:
Ryan Lortie
2010-06-24 12:25:48 -04:00
parent e3d0d07b04
commit de0464cf89
5 changed files with 75 additions and 36 deletions
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89
gio/gsettingsschema.c
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@@ -53,7 +53,8 @@ initialise_schema_sources (void)
gchar *filename;
GvdbTable *table;
filename = g_build_filename (*dir, "glib-2.0", "schemas", "gschemas.compiled", NULL);
filename = g_build_filename (*dir, "glib-2.0", "schemas",
"gschemas.compiled", NULL);
table = gvdb_table_new (filename, TRUE, NULL);
if (table != NULL)
@@ -82,6 +83,67 @@ initialise_schema_sources (void)
}
}
static void
add_item (gpointer key,
gpointer value,
gpointer user_data)
{
gchar ***ptr = user_data;
*(*ptr)++ = (gchar *) key;
}
/**
* g_settings_list_schemas:
* Returns: a list of the schemas installed on the system
*
* Returns a list of GSettings schemas that are available. The list
* must not be modified or freed.
**/
const gchar * const *
g_settings_list_schemas (void)
{
static gsize schema_list;
if (g_once_init_enter (&schema_list))
{
GHashTable *builder;
GSList *source;
gchar **list;
gchar **ptr;
gint i;
initialise_schema_sources ();
builder = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
for (source = schema_sources; source; source = source->next)
{
list = gvdb_table_list (source->data, "");
if (list)
{
for (i = 0; list[i]; i++)
g_hash_table_insert (builder, list[i], NULL);
/* not strfreev: we stole the strings into the hashtable */
g_free (list);
}
}
ptr = list = g_new (gchar *, g_hash_table_size (builder) + 1);
g_hash_table_foreach (builder, add_item, &ptr);
*ptr = NULL;
g_hash_table_steal_all (builder);
g_hash_table_unref (builder);
g_once_init_leave (&schema_list, (gsize) list);
}
return (const gchar **) schema_list;
}
static void
g_settings_schema_finalize (GObject *object)
{
@@ -237,28 +299,3 @@ g_settings_schema_list (GSettingsSchema *schema,
*n_items = schema->priv->n_items;
return schema->priv->items;
}
/**
* g_settings_schema_exists:
* @schema_name: the schema name to query for
* Returns: %TRUE if @schema_name exists
*
* Checks if the named schema is installed.
**/
gboolean
g_settings_schema_exists (const gchar *schema_name)
{
GSList *source;
initialise_schema_sources ();
for (source = schema_sources; source; source = source->next)
{
GvdbTable *file = source->data;
if (gvdb_table_get_table (file, schema_name))
return TRUE;
}
return FALSE;
}