diff -r d8ecbeda7683 -r a4033700e35c objlist.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/objlist.c	Mon Feb 16 18:04:44 2004 +0100
@@ -0,0 +1,112 @@
+/*
+ * libtu/objlist.c
+ *
+ * Copyright (c) Tuomo Valkonen 1999-2004. 
+ *
+ * You may distribute and modify this library under the terms of either
+ * the Clarified Artistic License or the GNU LGPL, version 2.1 or later.
+ */
+
+#include "obj.h"
+#include "types.h"
+#include "objlist.h"
+#include "dlist.h"
+#include "misc.h"
+
+
+static ObjList *iter_next=NULL;
+
+
+static void free_node(ObjList **objlist, ObjList *node)
+{
+	UNLINK_ITEM(*objlist, node, next, prev);
+	free(node);
+}
+
+	
+void watch_handler(Watch *watch, Obj *obj)
+{
+	ObjList *node=(ObjList*)watch;
+	ObjList **list=node->list;
+	
+	if(iter_next==node)
+		iter_next=node->next;
+	
+	free_node(list, node);
+}
+
+
+
+bool objlist_insert(ObjList **objlist, Obj *obj)
+{
+	ObjList *node;
+	
+	if(obj==NULL)
+		return FALSE;
+	
+	node=ALLOC(ObjList);
+	
+	if(node==NULL)
+		return FALSE;
+		
+	watch_init(&(node->watch));
+	watch_setup(&(node->watch), obj, watch_handler);
+	node->list=objlist;
+	
+	LINK_ITEM_FIRST(*objlist, node, next, prev);
+	
+	return TRUE;
+}
+
+
+void objlist_remove(ObjList **objlist, Obj *obj)
+{
+	ObjList *node=*objlist;
+	
+	while(node!=NULL){
+		if(node->watch.obj==obj){
+			watch_reset(&(node->watch));
+			free_node(objlist, node);
+			return;
+		}
+		node=node->next;
+	}
+}
+
+
+void objlist_clear(ObjList **objlist)
+{
+	while(*objlist!=NULL){
+		watch_reset(&((*objlist)->watch));
+		free_node(objlist, *objlist);
+	}
+}
+
+
+/* Warning: not thread-safe */
+
+
+Obj *objlist_init_iter(ObjList *objlist)
+{
+	if(objlist==NULL){
+		iter_next=NULL;
+		return NULL;
+	}
+	
+	iter_next=objlist->next;
+	return objlist->watch.obj;
+}
+
+
+Obj *objlist_iter()
+{
+	ObjList *ret;
+	
+	if(iter_next==NULL)
+		return NULL;
+	
+	ret=iter_next;
+	iter_next=iter_next->next;
+	
+	return ret->watch.obj;
+}