2 * Copyright (C) 2013 Thadeu Lima de Souza Cascardo <cascardo@cascardo.info>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 #include <sgp/group.h>
20 #include <sgp/friend.h>
25 struct sgp_friend **friends;
29 struct sgp_group * sgp_group_new()
31 struct sgp_group *group;
32 group = malloc(sizeof(*group));
33 group->nr_friends = 0;
34 group->friends = NULL;
39 * TODO: start using references. The group can't take it if we want to
40 * add a friend to more groups. A single global reference for all
41 * friends may be good enough.
43 int sgp_group_add_friend(struct sgp_group *group, struct sgp_friend *friend)
45 struct sgp_friend **old_friends;
46 old_friends = group->friends;
48 group->friends = realloc(old_friends,
49 group->nr_friends * sizeof(friend));
50 if (!group->friends) {
51 group->friends = old_friends;
55 group->friends[group->nr_friends - 1] = friend;
60 * Get the channel used for communication with a friend.
62 struct sgp_friend ** sgp_group_first(struct sgp_group *group)
64 if (group->nr_friends > 0)
65 return &group->friends[0];
69 struct sgp_friend ** sgp_group_next(struct sgp_group *group,
70 struct sgp_friend **friend)
73 n = (friend - group->friends) / sizeof(*friend);
74 if (group->nr_friends > n + 1)
75 return &group->friends[n+1];