From 55d5bd21685f2e5e64a62e9fbb23624fdb9e8ea3 Mon Sep 17 00:00:00 2001
From: Robert Ancell <robert.ancell@canonical.com>
Date: Mon, 8 Sep 2014 11:47:19 +1200
Subject: Add --show-config option that shows combined configuration

---
 common/configuration.c | 58 +++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 48 insertions(+), 10 deletions(-)

(limited to 'common/configuration.c')

diff --git a/common/configuration.c b/common/configuration.c
index aeba6e30..bf08c7d9 100644
--- a/common/configuration.c
+++ b/common/configuration.c
@@ -15,7 +15,10 @@
 
 struct ConfigurationPrivate
 {
+    gchar *dir;
     GKeyFile *key_file;
+    GList *sources;
+    GHashTable *key_sources;
 };
 
 G_DEFINE_TYPE (Configuration, config, G_TYPE_OBJECT);
@@ -34,7 +37,7 @@ gboolean
 config_load_from_file (Configuration *config, const gchar *path, GError **error)
 {
     GKeyFile *key_file;
-    gchar **groups;
+    gchar *source_path, **groups;
     int i;
 
     key_file = g_key_file_new ();
@@ -44,6 +47,9 @@ config_load_from_file (Configuration *config, const gchar *path, GError **error)
         return FALSE;
     }
 
+    source_path = g_strdup (path);
+    config->priv->sources = g_list_append (config->priv->sources, source_path);
+
     groups = g_key_file_get_groups (key_file, NULL);
     for (i = 0; groups[i]; i++)
     {
@@ -56,11 +62,14 @@ config_load_from_file (Configuration *config, const gchar *path, GError **error)
 
         for (j = 0; keys[j]; j++)
         {
-            gchar *value;
+            gchar *value, *k;
 
             value = g_key_file_get_value (key_file, groups[i], keys[j], NULL);
             g_key_file_set_value (config->priv->key_file, groups[i], keys[j], value);
             g_free (value);
+
+            k = g_strdup_printf ("%s]%s", groups[i], keys[j]);
+            g_hash_table_insert (config->priv->key_sources, k, source_path);
         }
 
         g_strfreev (keys);
@@ -159,25 +168,26 @@ load_config_directories (const gchar * const *dirs, GList **messages)
 gboolean
 config_load_from_standard_locations (Configuration *config, const gchar *config_path, GList **messages)
 {
-    gchar *config_dir, *config_d_dir = NULL, *path;
+    gchar *config_d_dir = NULL, *path;
     gboolean success = TRUE;
     GError *error = NULL;
 
+    g_return_val_if_fail (config->priv->dir == NULL, FALSE);
+
     load_config_directories (g_get_system_data_dirs (), messages);
     load_config_directories (g_get_system_config_dirs (), messages);
 
     if (config_path)
     {
-        config_dir = path_make_absolute (g_path_get_basename (config_path));
         path = g_strdup (config_path);
+        config->priv->dir = path_make_absolute (g_path_get_basename (config_path));
     }
     else
     {
-        config_dir = g_strdup (CONFIG_DIR);
-        config_d_dir = g_build_filename (config_dir, "lightdm.conf.d", NULL);
-        path = g_build_filename (config_dir, "lightdm.conf", NULL);
+        config->priv->dir = g_strdup (CONFIG_DIR);
+        config_d_dir = g_build_filename (config->priv->dir, "lightdm.conf.d", NULL);
+        path = g_build_filename (config->priv->dir, "lightdm.conf", NULL);
     }
-    config_set_string (config, "LightDM", "config-directory", config_dir);
 
     if (config_d_dir)
         load_config_directory (config_d_dir, messages);
@@ -199,13 +209,18 @@ config_load_from_standard_locations (Configuration *config, const gchar *config_
     }
     g_clear_error (&error);
 
-    g_free (config_dir);
     g_free (config_d_dir);
     g_free (path);
 
     return success;
 }
 
+const gchar *
+config_get_directory (Configuration *config)
+{
+    return config->priv->dir;
+}
+
 gchar **
 config_get_groups (Configuration *config)
 {
@@ -224,6 +239,25 @@ config_has_key (Configuration *config, const gchar *section, const gchar *key)
     return g_key_file_has_key (config->priv->key_file, section, key, NULL);
 }
 
+GList *
+config_get_sources (Configuration *config)
+{
+    return config->priv->sources;
+}
+
+const gchar *
+config_get_source (Configuration *config, const gchar *section, const gchar *key)
+{
+    gchar *k;
+    const gchar *source;
+
+    k = g_strdup_printf ("%s]%s", section, key);
+    source = g_hash_table_lookup (config->priv->key_sources, k);
+    g_free (k);
+
+    return source;
+}
+
 void
 config_set_string (Configuration *config, const gchar *section, const gchar *key, const gchar *value)
 {
@@ -276,7 +310,8 @@ static void
 config_init (Configuration *config)
 {
     config->priv = G_TYPE_INSTANCE_GET_PRIVATE (config, CONFIGURATION_TYPE, ConfigurationPrivate);
-    config->priv->key_file = g_key_file_new ();  
+    config->priv->key_file = g_key_file_new ();
+    config->priv->key_sources = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
 }
 
 static void
@@ -286,7 +321,10 @@ config_finalize (GObject *object)
 
     self = CONFIGURATION (object);
 
+    g_free (self->priv->dir);
     g_key_file_free (self->priv->key_file);
+    g_list_free_full (self->priv->sources, g_free);
+    g_hash_table_destroy (self->priv->key_sources);
 
     G_OBJECT_CLASS (config_parent_class)->finalize (object);  
 }
-- 
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