matrix-glib-sdk/src/utils.c

177 lines
4.7 KiB
C

/*
* This file is part of matrix-glib-sdk
*
* matrix-glib-sdk 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 3 of the License, or (at your option) any later version.
*
* matrix-glib-sdk 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 matrix-glib-sdk. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include "utils.h"
#include "matrix-enumtypes.h"
// GTK-Doc looking comments in this file intentionally do not begin with a double star, as the
// functions here are internal
/*
* _matrix_g_enum_to_string:
*
* @enum_type: a #GEnumType
* @value: an integer value registered in @enum_type
* @convert_dashes: if non-NUL, dashes in the value nick will be converted to this char
*
* Get the value nick (lower case, dash-separated name) of an enum, like matrix-error-none. If
* @convert_dashes is not NUL (`'\0'`), dashes will be converted to that char.
*
* Returns: (transfer full) the converted enum name, which must be freed
*/
gchar *
_matrix_g_enum_to_string(GType enum_type, gint value, gchar convert_dashes)
{
GEnumClass *enum_class = g_type_class_ref(enum_type);
GEnumValue *enum_value = g_enum_get_value(enum_class, value);
gchar *nick = NULL;
if (value) {
nick = g_strdup(enum_value->value_nick);
if (convert_dashes) {
gchar *a;
for (a = nick; *a; a++) {
if (*a == '-') {
*a = convert_dashes;
}
}
}
}
g_type_class_unref(enum_class);
return nick;
}
/*
* _matrix_g_enum_nick_to_value:
*
* @enum_type: a #GEnumType
* @nick: a value nick registered in @enum_type
* @error: a #GError, or NULL to ignore errors
*
* Get the integer value of the enum nick @nick from @enum_type. If the nick contains underscores
* (`_`), they will be converted to dashes (`-`) first.
*
* If @nick cannot be found in @enum_type, this function returns NULL, and sets @error to
* #MATRIX_ERROR_UNKNOWN_VALUE.
*
* Returns: the integer value of @nick, or 0 if not found
*/
gint
_matrix_g_enum_nick_to_value(GType enum_type, const gchar *nick, GError **error)
{
GEnumClass *enum_class = g_type_class_ref(enum_type);
GEnumValue *enum_value;
gchar *nick_c = NULL;
gchar *a;
gint ret = 0;
nick_c = g_strdup(nick);
for (a = nick_c; *a; a++) {
if (*a == '_') {
*a = '-';
}
}
enum_value = g_enum_get_value_by_nick(enum_class, nick_c);
g_free(nick_c);
if (enum_value) {
ret = enum_value->value;
} else {
g_set_error(error, MATRIX_ERROR, MATRIX_ERROR_UNKNOWN_VALUE,
"Value %s is unknown", nick);
}
g_type_class_unref(enum_class);
return ret;
}
static void
_copy_obj_member(JsonObject *old_obj, const gchar *member_name, JsonNode *member_node, gpointer user_data)
{
JsonObject *new_obj = user_data;
json_object_set_member(new_obj, member_name, _matrix_json_node_deep_copy(member_node));
}
static void
_copy_ary_member(JsonArray *old_ary, guint idx, JsonNode *element_node, gpointer user_data)
{
JsonArray *new_ary = user_data;
json_array_add_element(new_ary, _matrix_json_node_deep_copy(element_node));
}
JsonNode *
_matrix_json_node_deep_copy(JsonNode *node)
{
JsonNode *ret;
JsonNodeType node_type;
g_return_val_if_fail(node != NULL, NULL);
node_type = json_node_get_node_type(node);
ret = json_node_new(node_type);
switch (node_type) {
case JSON_NODE_OBJECT:
{
JsonObject *new_obj = json_object_new();
JsonObject *old_obj = json_node_get_object(node);
json_object_foreach_member(old_obj, _copy_obj_member, new_obj);
json_node_set_object(ret, new_obj);
break;
}
case JSON_NODE_ARRAY:
{
JsonArray *new_ary = json_array_new();
JsonArray *old_ary = json_node_get_array(node);
json_array_foreach_element(old_ary, _copy_ary_member, new_ary);
json_node_set_array(ret, new_ary);
break;
}
case JSON_NODE_VALUE:
{
GValue node_value = G_VALUE_INIT;
json_node_get_value(node, &node_value);
json_node_set_value(ret, &node_value);
g_value_unset(&node_value);
break;
}
case JSON_NODE_NULL:
break;
}
return ret;
}