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-rw-r--r--lib/libalpm/graph.h58
1 files changed, 58 insertions, 0 deletions
diff --git a/lib/libalpm/graph.h b/lib/libalpm/graph.h
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+++ b/lib/libalpm/graph.h
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+/*
+ * 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);
+}
+