Lots of changes. It compiles, but doesn't do much yet.

[tinc] / support / list.h

diff --git a/support/list.h b/support/list.h
new file mode 100644 (file)
index 0000000..124d7fc
--- /dev/null
+++ b/support/list.h
@@ -0,0 +1,89 @@
+/*
+    list.h -- linked lists
+
+    Copyright (C) 2000-2004 Ivo Timmermans <ivo@tinc-vpn.org>
+                  2000-2004 Guus Sliepen <guus@tinc-vpn.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, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+    $Id: list.h 1374 2004-03-21 14:21:22Z guus $
+*/
+
+#ifndef __LIST_H__
+#define __LIST_H__
+
+typedef struct list_node {
+       struct list_node *prev;
+       struct list_node *next;
+
+       void *data;
+} list_node_t;
+
+typedef void (*list_action_t)(const void *);
+typedef void (*list_node_action_t)(const list_node_t *);
+
+typedef struct list {
+       struct list_node *head;
+       struct list_node *tail;
+       int count;
+
+       list_action_t free;
+} list_t;
+
+/* (De)constructors */
+
+extern struct list *list_new(list_action_t) __attribute__ ((__malloc__));
+extern void list_free(struct list *);
+extern struct list_node *list_node_new(void);
+extern void list_node_free(struct list *, struct list_node *);
+
+/* Insertion and deletion */
+
+extern struct list_node *list_add_head(struct list *, void *);
+extern struct list_node *list_add_tail(struct list *, void *);
+
+extern void list_unlink_node(struct list *, struct list_node *);
+extern void list_node_del(struct list *, struct list_node *);
+
+extern void list_del_head(struct list *);
+extern void list_del_tail(struct list *);
+
+/* Head/tail lookup */
+
+extern void *list_get_head(const struct list *);
+extern void *list_get_tail(const struct list *);
+
+/* Fast list deletion */
+
+extern void list_del(struct list *);
+
+/* Traversing */
+
+#define list_foreach(list, object, action) {list_node_t *_node, *_next; \
+        for(_node = (list)->head; _node; _node = _next) { \
+                _next = _node->next; \
+                (object) = _node->data; \
+                action; \
+        } \
+}
+
+#define list_foreach_node(list, node, action) {list_node_t *_next; \
+        for((node) = (list)->head; (node); (node) = _next) { \
+                _next = (node)->next; \
+                action; \
+        } \
+}
+
+#endif