messages-service.c: move gsettings strv handling into gsettingsstrv.[ch]

1 files changed, 106 insertions, 0 deletions

diff --git a/src/gsettingsstrv.c b/src/gsettingsstrv.c
new file mode 100644
index 0000000..cf889fa
--- /dev/null
+++ b/src/gsettingsstrv.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2012 Canonical Ltd.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 3, as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranties of
+ * MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *     Lars Uebernickel <lars.uebernickel@canonical.com>
+ */
+
+#include "gsettingsstrv.h"
+
+/**
+ * g_settings_strv_append_unique:
+ * @settings: a #GSettings object
+ * @key: the key at which @settings contains a string array
+ * @item: the string to append
+ *
+ * Appends @item to the string array at @key if that string array doesn't
+ * contain @item yet.
+ *
+ * Returns: TRUE if @item was added to the list, FALSE if it already existed.
+ */
+gboolean
+g_settings_strv_append_unique (GSettings   *settings,
+                               const gchar *key,
+                               const gchar *item)
+{
+  gchar **strv;
+  gchar **it;
+  gboolean add = TRUE;
+
+  g_return_val_if_fail (G_IS_SETTINGS (settings), FALSE);
+  g_return_val_if_fail (key != NULL, FALSE);
+  g_return_val_if_fail (item != NULL, FALSE);
+
+  strv = g_settings_get_strv (settings, key);
+
+  for (it = strv; *it; it++)
+    {
+      if (g_str_equal (*it, item))
+        {
+          add = FALSE;
+          break;
+        }
+    }
+
+  if (add)
+    {
+      GVariantBuilder builder;
+
+      g_variant_builder_init (&builder, G_VARIANT_TYPE ("as"));
+
+      for (it = strv; *it; it++)
+        g_variant_builder_add (&builder, "s", *it);
+      g_variant_builder_add (&builder, "s", item);
+
+      g_settings_set_value (settings, key, g_variant_builder_end (&builder));
+    }
+
+  g_strfreev (strv);
+  return add;
+}
+
+/**
+ * g_settings_strv_remove:
+ * @settings: a #GSettings object
+ * @key: the key at which @settings contains a string array
+ * @item: the string to remove
+ *
+ * Removes all occurences of @item in @key.
+ */
+void
+g_settings_strv_remove (GSettings   *settings,
+                        const gchar *key,
+                        const gchar *item)
+{
+  gchar **strv;
+  gchar **it;
+  GVariantBuilder builder;
+
+  g_return_if_fail (G_IS_SETTINGS (settings));
+  g_return_if_fail (key != NULL);
+  g_return_if_fail (item != NULL);
+
+  strv = g_settings_get_strv (settings, key);
+
+  g_variant_builder_init (&builder, (GVariantType *)"as");
+  for (it = strv; *it; it++)
+    {
+      if (!g_str_equal (*it, item))
+        g_variant_builder_add (&builder, "s", *it);
+    }
+  g_settings_set_value (settings, key, g_variant_builder_end (&builder));
+
+  g_strfreev (strv);
+}