* 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, write to the
- * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307, USA.
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: David Zeuthen <davidz@redhat.com>
*/
/**
* SECTION:gdbusutils
* @title: D-Bus Utilities
- * @short_description: Various utilities related to D-Bus.
+ * @short_description: Various utilities related to D-Bus
* @include: gio/gio.h
*
* Various utility routines related to D-Bus.
}
/* ---------------------------------------------------------------------------------------------------- */
+
+/**
+ * g_dbus_gvariant_to_gvalue:
+ * @value: A #GVariant.
+ * @out_gvalue: (out): Return location pointing to a zero-filled (uninitialized) #GValue.
+ *
+ * Converts a #GVariant to a #GValue. If @value is floating, it is consumed.
+ *
+ * The rules specified in the g_dbus_gvalue_to_gvariant() function are
+ * used - this function is essentially its reverse form.
+ *
+ * The conversion never fails - a valid #GValue is always returned in
+ * @out_gvalue.
+ *
+ * Since: 2.30
+ */
+void
+g_dbus_gvariant_to_gvalue (GVariant *value,
+ GValue *out_gvalue)
+{
+ const GVariantType *type;
+ gchar **array;
+
+ g_return_if_fail (value != NULL);
+ g_return_if_fail (out_gvalue != NULL);
+
+ memset (out_gvalue, '\0', sizeof (GValue));
+
+ switch (g_variant_classify (value))
+ {
+ case G_VARIANT_CLASS_BOOLEAN:
+ g_value_init (out_gvalue, G_TYPE_BOOLEAN);
+ g_value_set_boolean (out_gvalue, g_variant_get_boolean (value));
+ break;
+
+ case G_VARIANT_CLASS_BYTE:
+ g_value_init (out_gvalue, G_TYPE_UCHAR);
+ g_value_set_uchar (out_gvalue, g_variant_get_byte (value));
+ break;
+
+ case G_VARIANT_CLASS_INT16:
+ g_value_init (out_gvalue, G_TYPE_INT);
+ g_value_set_int (out_gvalue, g_variant_get_int16 (value));
+ break;
+
+ case G_VARIANT_CLASS_UINT16:
+ g_value_init (out_gvalue, G_TYPE_UINT);
+ g_value_set_uint (out_gvalue, g_variant_get_uint16 (value));
+ break;
+
+ case G_VARIANT_CLASS_INT32:
+ g_value_init (out_gvalue, G_TYPE_INT);
+ g_value_set_int (out_gvalue, g_variant_get_int32 (value));
+ break;
+
+ case G_VARIANT_CLASS_UINT32:
+ g_value_init (out_gvalue, G_TYPE_UINT);
+ g_value_set_uint (out_gvalue, g_variant_get_uint32 (value));
+ break;
+
+ case G_VARIANT_CLASS_INT64:
+ g_value_init (out_gvalue, G_TYPE_INT64);
+ g_value_set_int64 (out_gvalue, g_variant_get_int64 (value));
+ break;
+
+ case G_VARIANT_CLASS_UINT64:
+ g_value_init (out_gvalue, G_TYPE_UINT64);
+ g_value_set_uint64 (out_gvalue, g_variant_get_uint64 (value));
+ break;
+
+ case G_VARIANT_CLASS_FLOAT:
+ g_value_init (out_gvalue, G_TYPE_FLOAT);
+ g_value_set_float (out_gvalue, g_variant_get_float (value));
+ break;
+
+ case G_VARIANT_CLASS_DOUBLE:
+ g_value_init (out_gvalue, G_TYPE_DOUBLE);
+ g_value_set_double (out_gvalue, g_variant_get_double (value));
+ break;
+
+ case G_VARIANT_CLASS_STRING:
+ g_value_init (out_gvalue, G_TYPE_STRING);
+ g_value_set_string (out_gvalue, g_variant_get_string (value, NULL));
+ break;
+
+ case G_VARIANT_CLASS_OBJECT_PATH:
+ g_value_init (out_gvalue, G_TYPE_STRING);
+ g_value_set_string (out_gvalue, g_variant_get_string (value, NULL));
+ break;
+
+ case G_VARIANT_CLASS_SIGNATURE:
+ g_value_init (out_gvalue, G_TYPE_STRING);
+ g_value_set_string (out_gvalue, g_variant_get_string (value, NULL));
+ break;
+
+ case G_VARIANT_CLASS_ARRAY:
+ type = g_variant_get_type (value);
+ switch (g_variant_type_peek_string (type)[1])
+ {
+ case G_VARIANT_CLASS_BYTE:
+ g_value_init (out_gvalue, G_TYPE_STRING);
+ g_value_set_string (out_gvalue, g_variant_get_bytestring (value));
+ break;
+
+ case G_VARIANT_CLASS_STRING:
+ g_value_init (out_gvalue, G_TYPE_STRV);
+ array = g_variant_dup_strv (value, NULL);
+ g_value_take_boxed (out_gvalue, array);
+ break;
+
+ case G_VARIANT_CLASS_OBJECT_PATH:
+ g_value_init (out_gvalue, G_TYPE_STRV);
+ array = g_variant_dup_objv (value, NULL);
+ g_value_take_boxed (out_gvalue, array);
+ break;
+
+ case G_VARIANT_CLASS_ARRAY:
+ switch (g_variant_type_peek_string (type)[2])
+ {
+ case G_VARIANT_CLASS_BYTE:
+ g_value_init (out_gvalue, G_TYPE_STRV);
+ array = g_variant_dup_bytestring_array (value, NULL);
+ g_value_take_boxed (out_gvalue, array);
+ break;
+
+ default:
+ g_value_init (out_gvalue, G_TYPE_VARIANT);
+ g_value_set_variant (out_gvalue, value);
+ break;
+ }
+ break;
+
+ default:
+ g_value_init (out_gvalue, G_TYPE_VARIANT);
+ g_value_set_variant (out_gvalue, value);
+ break;
+ }
+ break;
+
+ case G_VARIANT_CLASS_HANDLE:
+ case G_VARIANT_CLASS_VARIANT:
+ case G_VARIANT_CLASS_MAYBE:
+ case G_VARIANT_CLASS_TUPLE:
+ case G_VARIANT_CLASS_DICT_ENTRY:
+ g_value_init (out_gvalue, G_TYPE_VARIANT);
+ g_value_set_variant (out_gvalue, value);
+ break;
+ }
+}
+
+
+/**
+ * g_dbus_gvalue_to_gvariant:
+ * @gvalue: A #GValue to convert to a #GVariant
+ * @type: A #GVariantType
+ *
+ * Converts a #GValue to a #GVariant of the type indicated by the @type
+ * parameter.
+ *
+ * The conversion is using the following rules:
+ *
+ * - #G_TYPE_STRING: 's', 'o', 'g' or 'ay'
+ * - #G_TYPE_STRV: 'as', 'ao' or 'aay'
+ * - #G_TYPE_BOOLEAN: 'b'
+ * - #G_TYPE_UCHAR: 'y'
+ * - #G_TYPE_INT: 'i', 'n'
+ * - #G_TYPE_UINT: 'u', 'q'
+ * - #G_TYPE_INT64 'x'
+ * - #G_TYPE_UINT64: 't'
+ * - #G_TYPE_DOUBLE: 'd'
+ * - #G_TYPE_VARIANT: Any #GVariantType
+ *
+ * This can fail if e.g. @gvalue is of type #G_TYPE_STRING and @type
+ * is ['i'][G-VARIANT-TYPE-INT32:CAPS]. It will also fail for any #GType
+ * (including e.g. #G_TYPE_OBJECT and #G_TYPE_BOXED derived-types) not
+ * in the table above.
+ *
+ * Note that if @gvalue is of type #G_TYPE_VARIANT and its value is
+ * %NULL, the empty #GVariant instance (never %NULL) for @type is
+ * returned (e.g. 0 for scalar types, the empty string for string types,
+ * '/' for object path types, the empty array for any array type and so on).
+ *
+ * See the g_dbus_gvariant_to_gvalue() function for how to convert a
+ * #GVariant to a #GValue.
+ *
+ * Returns: A #GVariant (never floating) of #GVariantType @type holding
+ * the data from @gvalue or %NULL in case of failure. Free with
+ * g_variant_unref().
+ *
+ * Since: 2.30
+ */
+GVariant *
+g_dbus_gvalue_to_gvariant (const GValue *gvalue,
+ const GVariantType *type)
+{
+ GVariant *ret;
+ const gchar *s;
+ const gchar * const *as;
+ const gchar *empty_strv[1] = {NULL};
+
+ g_return_val_if_fail (gvalue != NULL, NULL);
+ g_return_val_if_fail (type != NULL, NULL);
+
+ ret = NULL;
+
+ /* @type can easily be e.g. "s" with the GValue holding a GVariant - for example this
+ * can happen when using the org.gtk.GDBus.C.ForceGVariant annotation with the
+ * gdbus-codegen(1) tool.
+ */
+ if (G_VALUE_TYPE (gvalue) == G_TYPE_VARIANT)
+ {
+ ret = g_value_dup_variant (gvalue);
+ }
+ else
+ {
+ switch (g_variant_type_peek_string (type)[0])
+ {
+ case G_VARIANT_CLASS_BOOLEAN:
+ ret = g_variant_ref_sink (g_variant_new_boolean (g_value_get_boolean (gvalue)));
+ break;
+
+ case G_VARIANT_CLASS_BYTE:
+ ret = g_variant_ref_sink (g_variant_new_byte (g_value_get_uchar (gvalue)));
+ break;
+
+ case G_VARIANT_CLASS_INT16:
+ ret = g_variant_ref_sink (g_variant_new_int16 (g_value_get_int (gvalue)));
+ break;
+
+ case G_VARIANT_CLASS_UINT16:
+ ret = g_variant_ref_sink (g_variant_new_uint16 (g_value_get_uint (gvalue)));
+ break;
+
+ case G_VARIANT_CLASS_INT32:
+ ret = g_variant_ref_sink (g_variant_new_int32 (g_value_get_int (gvalue)));
+ break;
+
+ case G_VARIANT_CLASS_UINT32:
+ ret = g_variant_ref_sink (g_variant_new_uint32 (g_value_get_uint (gvalue)));
+ break;
+
+ case G_VARIANT_CLASS_INT64:
+ ret = g_variant_ref_sink (g_variant_new_int64 (g_value_get_int64 (gvalue)));
+ break;
+
+ case G_VARIANT_CLASS_UINT64:
+ ret = g_variant_ref_sink (g_variant_new_uint64 (g_value_get_uint64 (gvalue)));
+ break;
+
+ case G_VARIANT_CLASS_FLOAT:
+ ret = g_variant_ref_sink (g_variant_new_float (g_value_get_float (gvalue)));
+ break;
+
+ case G_VARIANT_CLASS_DOUBLE:
+ ret = g_variant_ref_sink (g_variant_new_double (g_value_get_double (gvalue)));
+ break;
+
+ case G_VARIANT_CLASS_STRING:
+ s = g_value_get_string (gvalue);
+ if (s == NULL)
+ s = "";
+ ret = g_variant_ref_sink (g_variant_new_string (s));
+ break;
+
+ case G_VARIANT_CLASS_OBJECT_PATH:
+ s = g_value_get_string (gvalue);
+ if (s == NULL)
+ s = "/";
+ ret = g_variant_ref_sink (g_variant_new_object_path (s));
+ break;
+
+ case G_VARIANT_CLASS_SIGNATURE:
+ s = g_value_get_string (gvalue);
+ if (s == NULL)
+ s = "";
+ ret = g_variant_ref_sink (g_variant_new_signature (s));
+ break;
+
+ case G_VARIANT_CLASS_ARRAY:
+ switch (g_variant_type_peek_string (type)[1])
+ {
+ case G_VARIANT_CLASS_BYTE:
+ s = g_value_get_string (gvalue);
+ if (s == NULL)
+ s = "";
+ ret = g_variant_ref_sink (g_variant_new_bytestring (s));
+ break;
+
+ case G_VARIANT_CLASS_STRING:
+ as = g_value_get_boxed (gvalue);
+ if (as == NULL)
+ as = empty_strv;
+ ret = g_variant_ref_sink (g_variant_new_strv (as, -1));
+ break;
+
+ case G_VARIANT_CLASS_OBJECT_PATH:
+ as = g_value_get_boxed (gvalue);
+ if (as == NULL)
+ as = empty_strv;
+ ret = g_variant_ref_sink (g_variant_new_objv (as, -1));
+ break;
+
+ case G_VARIANT_CLASS_ARRAY:
+ switch (g_variant_type_peek_string (type)[2])
+ {
+ case G_VARIANT_CLASS_BYTE:
+ as = g_value_get_boxed (gvalue);
+ if (as == NULL)
+ as = empty_strv;
+ ret = g_variant_ref_sink (g_variant_new_bytestring_array (as, -1));
+ break;
+
+ default:
+ ret = g_value_dup_variant (gvalue);
+ break;
+ }
+ break;
+
+ default:
+ ret = g_value_dup_variant (gvalue);
+ break;
+ }
+ break;
+
+ case G_VARIANT_CLASS_HANDLE:
+ case G_VARIANT_CLASS_VARIANT:
+ case G_VARIANT_CLASS_MAYBE:
+ case G_VARIANT_CLASS_TUPLE:
+ case G_VARIANT_CLASS_DICT_ENTRY:
+ ret = g_value_dup_variant (gvalue);
+ break;
+ }
+ }
+
+ /* Could be that the GValue is holding a NULL GVariant - in that case,
+ * we return an "empty" GVariant instead of a NULL GVariant
+ */
+ if (ret == NULL)
+ {
+ GVariant *untrusted_empty;
+ untrusted_empty = g_variant_new_from_data (type, NULL, 0, FALSE, NULL, NULL);
+ ret = g_variant_ref_sink (g_variant_get_normal_form (untrusted_empty));
+ g_variant_unref (untrusted_empty);
+ }
+
+ g_assert (!g_variant_is_floating (ret));
+
+ return ret;
+}
projects / platform / upstream / glib.git / blobdiff