1 files changed, 58 insertions, 0 deletions
diff --git a/lib/libalpm/graph.h b/lib/libalpm/graph.h
new file mode 100644
index 00000000..72a7136f
--- /dev/null
+++ b/lib/libalpm/graph.h
@@ -0,0 +1,58 @@
+/*
+ *  graph.h - helpful graph structure and setup/teardown methods
+ *
+ *  Copyright (c) 2002-2008 by Judd Vinet <jvinet@zeroflux.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 <sys/types.h> /* off_t */
+
+#include "alpm_list.h"
+#include "util.h" /* MALLOC() */
+#include "alpm.h"
+
+struct __pmgraph_t {
+	char state; /* 0: untouched, -1: entered, other: leaving time */
+	void *data;
+	off_t weight; /* weight of the node */
+	struct __pmgraph_t *parent; /* where did we come from? */
+	alpm_list_t *children;
+	alpm_list_t *childptr; /* points to a child in children list */
+};
+typedef struct __pmgraph_t pmgraph_t;
+
+static pmgraph_t *_alpm_graph_new(void)
+{
+	pmgraph_t *graph = NULL;
+
+	MALLOC(graph, sizeof(pmgraph_t), RET_ERR(PM_ERR_MEMORY, NULL));
+
+	if(graph) {
+		graph->state = 0;
+		graph->data = NULL;
+		graph->parent = NULL;
+		graph->children = NULL;
+		graph->childptr = NULL;
+	}
+	return(graph);
+}
+
+static void _alpm_graph_free(void *data)
+{
+	pmgraph_t *graph = data;
+	alpm_list_free(graph->children);
+	free(graph);
+}
+