Implemented roster grouped by presence

src/roster_list.c

@@ -265,6 +265,26 @@ roster_barejid_from_name(const char * const name)
     return g_hash_table_lookup(name_to_barejid, name);
 }
 
+GSList *
+roster_get_contacts_by_presence(const char * const presence)
+{
+    GSList *result = NULL;
+    GHashTableIter iter;
+    gpointer key;
+    gpointer value;
+
+    g_hash_table_iter_init(&iter, contacts);
+    while (g_hash_table_iter_next(&iter, &key, &value)) {
+        PContact contact = (PContact)value;
+        if (g_strcmp0(p_contact_presence(contact), presence) == 0) {
+            result = g_slist_insert_sorted(result, value, (GCompareFunc)_compare_contacts);
+        }
+    }
+
+    // resturn all contact structs
+    return result;
+}
+
 GSList *
 roster_get_contacts(void)
 {