Import Upstream version 2.72.4

2023-07-04 11:23:22 +02:00 · 2023-07-04 11:23:22 +02:00 · 4ef3ff9793
commit 4ef3ff9793
2003 changed files with 1332420 additions and 0 deletions
--- a/gio/gnullsettingsbackend.c
+++ b/gio/gnullsettingsbackend.c
@ -0,0 +1,138 @@
+/*
+ * Copyright © 2010 Codethink Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Ryan Lortie <desrt@desrt.ca>
+ */
+
+#include "config.h"
+
+#include "gsettingsbackendinternal.h"
+#include "giomodule-priv.h"
+#include "gsimplepermission.h"
+
+
+#define G_TYPE_NULL_SETTINGS_BACKEND    (g_null_settings_backend_get_type ())
+#define G_NULL_SETTINGS_BACKEND(inst)   (G_TYPE_CHECK_INSTANCE_CAST ((inst), \
+                                         G_TYPE_NULL_SETTINGS_BACKEND,       \
+                                         GNullSettingsBackend))
+
+
+typedef GSettingsBackendClass GNullSettingsBackendClass;
+typedef GSettingsBackend      GNullSettingsBackend;
+
+G_DEFINE_TYPE_WITH_CODE (GNullSettingsBackend,
+                         g_null_settings_backend,
+                         G_TYPE_SETTINGS_BACKEND,
+                         _g_io_modules_ensure_extension_points_registered ();
+                         g_io_extension_point_implement (G_SETTINGS_BACKEND_EXTENSION_POINT_NAME,
+                                                         g_define_type_id, "null", 10))
+
+static GVariant *
+g_null_settings_backend_read (GSettingsBackend   *backend,
+                              const gchar        *key,
+                              const GVariantType *expected_type,
+                              gboolean            default_value)
+{
+  return NULL;
+}
+
+static gboolean
+g_null_settings_backend_write (GSettingsBackend *backend,
+                               const gchar      *key,
+                               GVariant         *value,
+                               gpointer          origin_tag)
+{
+  if (value)
+    g_variant_unref (g_variant_ref_sink (value));
+  return FALSE;
+}
+
+static gboolean
+g_null_settings_backend_write_one (gpointer key,
+                                   gpointer value,
+                                   gpointer data)
+{
+  if (value)
+    g_variant_unref (g_variant_ref_sink (value));
+  return FALSE;
+}
+
+static gboolean
+g_null_settings_backend_write_tree (GSettingsBackend *backend,
+                                    GTree            *tree,
+                                    gpointer          origin_tag)
+{
+  g_tree_foreach (tree, g_null_settings_backend_write_one, backend);
+  return FALSE;
+}
+
+static void
+g_null_settings_backend_reset (GSettingsBackend *backend,
+                               const gchar      *key,
+                               gpointer          origin_tag)
+{
+}
+
+static gboolean
+g_null_settings_backend_get_writable (GSettingsBackend *backend,
+                                      const gchar      *name)
+{
+  return FALSE;
+}
+
+static GPermission *
+g_null_settings_backend_get_permission (GSettingsBackend *backend,
+                                        const gchar      *path)
+{
+  return g_simple_permission_new (FALSE);
+}
+
+static void
+g_null_settings_backend_init (GNullSettingsBackend *memory)
+{
+}
+
+static void
+g_null_settings_backend_class_init (GNullSettingsBackendClass *class)
+{
+  GSettingsBackendClass *backend_class = G_SETTINGS_BACKEND_CLASS (class);
+
+  backend_class->read = g_null_settings_backend_read;
+  backend_class->write = g_null_settings_backend_write;
+  backend_class->write_tree = g_null_settings_backend_write_tree;
+  backend_class->reset = g_null_settings_backend_reset;
+  backend_class->get_writable = g_null_settings_backend_get_writable;
+  backend_class->get_permission = g_null_settings_backend_get_permission;
+}
+
+/**
+ * g_null_settings_backend_new:
+ *
+ *
+ * Creates a readonly #GSettingsBackend.
+ *
+ * This backend does not allow changes to settings, so all settings
+ * will always have their default values.
+ *
+ * Returns: (transfer full): a newly created #GSettingsBackend
+ *
+ * Since: 2.28
+ */
+GSettingsBackend *
+g_null_settings_backend_new (void)
+{
+  return g_object_new (G_TYPE_NULL_SETTINGS_BACKEND, NULL);
+}