Initial revision

source/blender/blenlib/intern/BLI_linklist.c

@@ -0,0 +1,98 @@
+/**
+ * $Id$
+ *
+ * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
+ *
+ * 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. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ * Support for linked lists.
+ */
+
+#include "MEM_guardedalloc.h"
+#include "BLI_blenlib.h"
+#include "BLI_linklist.h"
+#include "BLI_memarena.h"
+
+int BLI_linklist_length(LinkNode *list) {
+	if (0) {
+		return list?(1+BLI_linklist_length(list->next)):0;
+	} else {
+		int len;
+
+		for (len=0; list; list= list->next)
+			len++;
+	
+		return len;
+	}
+}
+
+void BLI_linklist_reverse(LinkNode **listp) {
+	LinkNode *rhead= NULL, *cur= *listp;
+	
+	while (cur) {
+		LinkNode *next= cur->next;
+		
+		cur->next= rhead;
+		rhead= cur;
+		
+		cur= next;
+	}
+	
+	*listp= rhead;
+}
+
+void BLI_linklist_prepend(LinkNode **listp, void *ptr) {
+	LinkNode *nlink= MEM_mallocN(sizeof(*nlink), "nlink");
+	nlink->link= ptr;
+	
+	nlink->next= *listp;
+	*listp= nlink;
+}
+
+void BLI_linklist_prepend_arena(LinkNode **listp, void *ptr, MemArena *ma) {
+	LinkNode *nlink= BLI_memarena_alloc(ma, sizeof(*nlink));
+	nlink->link= ptr;
+	
+	nlink->next= *listp;
+	*listp= nlink;
+}
+
+void BLI_linklist_free(LinkNode *list, LinkNodeFreeFP freefunc) {
+	while (list) {
+		LinkNode *next= list->next;
+		
+		if (freefunc)
+			freefunc(list->link);
+		MEM_freeN(list);
+		
+		list= next;
+	}
+}
+
+void BLI_linklist_apply(LinkNode *list, LinkNodeApplyFP applyfunc) {
+	for (; list; list= list->next)
+		applyfunc(list->link);
+}