1 files changed, 52 insertions, 0 deletions
diff --git a/lib/libalpm/graph.c b/lib/libalpm/graph.c
new file mode 100644
index 00000000..2e2ba236
--- /dev/null
+++ b/lib/libalpm/graph.c
@@ -0,0 +1,52 @@
+/*
+ *  graph.c - helpful graph structure and setup/teardown methods
+ *
+ *  Copyright (c) 2007-2011 Pacman Development Team <pacman-dev@archlinux.org>
+ *
+ *  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 2 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "graph.h"
+#include "util.h"
+#include "log.h"
+
+pmgraph_t *_alpm_graph_new(void)
+{
+	pmgraph_t *graph = NULL;
+
+	CALLOC(graph, 1, sizeof(pmgraph_t), RET_ERR(PM_ERR_MEMORY, NULL));
+	return graph;
+}
+
+void _alpm_graph_free(void *data)
+{
+	pmgraph_t *graph = data;
+	/* make my children forget about me */
+	for(alpm_list_t *i = graph->children; i; i = i->next) {
+		pmgraph_t *child = i->data;
+		child->parent = NULL;
+	}
+	alpm_list_free(graph->children);
+	/* and make my parents forget about me too */
+	if(graph->parent) {
+		alpm_list_t *me = alpm_list_find_ptr(graph->parent->children, &data);
+		graph->parent->children = alpm_list_remove_item(graph->parent->children,
+				me);
+	}
+	free(graph);
+}
+
+/* vim: set ts=2 sw=2 noet: */