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/*
* disco.c
* vim: expandtab:ts=4:sts=4:sw=4
*
* Copyright (C) 2012 - 2019 James Booth <boothj5@gmail.com>
*
* This file is part of Profanity.
*
* Profanity is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Profanity 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Profanity. If not, see <https://www.gnu.org/licenses/>.
*
* In addition, as a special exception, the copyright holders give permission to
* link the code of portions of this program with the OpenSSL library under
* certain conditions as described in each individual source file, and
* distribute linked combinations including the two.
*
* You must obey the GNU General Public License in all respects for all of the
* code used other than OpenSSL. If you modify file(s) with this exception, you
* may extend this exception to your version of the file(s), but you are not
* obligated to do so. If you do not wish to do so, delete this exception
* statement from your version. If you delete this exception statement from all
* source files in the program, then also delete it here.
*
*/
#include <string.h>
#include <stdlib.h>
#include <glib.h>
// features to reference count map
static GHashTable *features = NULL;
// plugin to feature map
static GHashTable *plugin_to_features = NULL;
static void
_free_features(GHashTable *features)
{
g_hash_table_destroy(features);
}
void
disco_add_feature(const char *plugin_name, char *feature)
{
if (feature == NULL || plugin_name == NULL) {
return;
}
if (!features) {
features = g_hash_table_new_full(g_str_hash, g_str_equal, free, NULL);
}
if (!plugin_to_features) {
plugin_to_features = g_hash_table_new_full(g_str_hash, g_str_equal, free, (GDestroyNotify)_free_features);
}
GHashTable *plugin_features = g_hash_table_lookup(plugin_to_features, plugin_name);
gboolean added = FALSE;
if (plugin_features == NULL) {
plugin_features = g_hash_table_new_full(g_str_hash, g_str_equal, free, NULL);
g_hash_table_add(plugin_features, strdup(feature));
g_hash_table_insert(plugin_to_features, strdup(plugin_name), plugin_features);
added = TRUE;
} else if (!g_hash_table_contains(plugin_features, feature)) {
g_hash_table_add(plugin_features, strdup(feature));
added = TRUE;
}
if (added == FALSE) {
return;
}
if (!g_hash_table_contains(features, feature)) {
g_hash_table_insert(features, strdup(feature), GINT_TO_POINTER(1));
} else {
void *refcountp = g_hash_table_lookup(features, feature);
int refcount = GPOINTER_TO_INT(refcountp);
refcount++;
g_hash_table_replace(features, strdup(feature), GINT_TO_POINTER(refcount));
}
}
void
disco_remove_features(const char *plugin_name)
{
if (!features) {
return;
}
if (!plugin_to_features) {
return;
}
GHashTable *plugin_features_set = g_hash_table_lookup(plugin_to_features, plugin_name);
if (!plugin_features_set) {
return;
}
GList *plugin_feature_list = g_hash_table_get_keys(plugin_features_set);
GList *curr = plugin_feature_list;
while (curr) {
char *feature = curr->data;
if (g_hash_table_contains(features, feature)) {
void *refcountp = g_hash_table_lookup(features, feature);
int refcount = GPOINTER_TO_INT(refcountp);
if (refcount == 1) {
g_hash_table_remove(features, feature);
} else {
refcount--;
g_hash_table_replace(features, strdup(feature), GINT_TO_POINTER(refcount));
}
}
curr = g_list_next(curr);
}
g_list_free(plugin_feature_list);
}
GList*
disco_get_features(void)
{
if (features == NULL) {
return NULL;
}
return g_hash_table_get_keys(features);
}
void
disco_close(void)
{
if (features) {
g_hash_table_destroy(features);
features = NULL;
}
if (plugin_to_features) {
g_hash_table_destroy(plugin_to_features);
plugin_to_features = NULL;
}
}
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