The very start of a small framework for social.

[cascardo/sgp.git] / src / group.c

diff --git a/src/group.c b/src/group.c
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+/*
+ *  Copyright (C) 2013  Thadeu Lima de Souza Cascardo <cascardo@cascardo.info>
+ *
+ *  This program 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.
+ *
+ *  This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <sgp/group.h>
+#include <sgp/friend.h>
+#include <stdlib.h>
+
+struct sgp_group {
+       struct sgp_friend **friends;
+       int nr_friends;
+};
+
+struct sgp_group * sgp_group_new()
+{
+       struct sgp_group *group;
+       group = malloc(sizeof(*group));
+       group->nr_friends = 0;
+       group->friends = NULL;
+       return group;
+}
+
+int sgp_group_add_friend(struct sgp_group *group, struct sgp_friend *friend)
+{
+       return 0;
+}
+
+/*
+ * Get the channel used for communication with a friend.
+ */
+struct sgp_friend ** sgp_group_first(struct sgp_group *group)
+{
+       if (group->nr_friends > 0)
+               return &group->friends[0];
+       return NULL;
+}
+
+struct sgp_friend ** sgp_group_next(struct sgp_group *group,
+                                       struct sgp_friend **friend)
+{
+       int n;
+       n = (friend - group->friends) / sizeof(*friend);
+       if (group->nr_friends > n + 1)
+               return &group->friends[n+1];
+       return NULL;
+}