1 files changed, 107 insertions, 0 deletions
diff --git a/lst.lib/lstDupl.c b/lst.lib/lstDupl.c
new file mode 100644
index 0000000..2174ff7
--- /dev/null
+++ b/lst.lib/lstDupl.c
@@ -0,0 +1,107 @@
+/*	$NetBSD: lstDupl.c,v 1.16 2009/01/23 21:26:30 dsl Exp $	*/
+
+/*
+ * Copyright (c) 1988, 1989, 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Adam de Boor.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef MAKE_NATIVE
+static char rcsid[] = "$NetBSD: lstDupl.c,v 1.16 2009/01/23 21:26:30 dsl Exp $";
+#else
+#include <sys/cdefs.h>
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)lstDupl.c	8.1 (Berkeley) 6/6/93";
+#else
+__RCSID("$NetBSD: lstDupl.c,v 1.16 2009/01/23 21:26:30 dsl Exp $");
+#endif
+#endif /* not lint */
+#endif
+
+/*-
+ * listDupl.c --
+ *	Duplicate a list. This includes duplicating the individual
+ *	elements.
+ */
+
+#include    "lstInt.h"
+
+/*-
+ *-----------------------------------------------------------------------
+ * Lst_Duplicate --
+ *	Duplicate an entire list. If a function to copy a void *is
+ *	given, the individual client elements will be duplicated as well.
+ *
+ * Input:
+ *	l		the list to duplicate
+ *	copyProc	A function to duplicate each void *
+ *
+ * Results:
+ *	The new Lst structure or NULL if failure.
+ *
+ * Side Effects:
+ *	A new list is created.
+ *-----------------------------------------------------------------------
+ */
+Lst
+Lst_Duplicate(Lst l, DuplicateProc *copyProc)
+{
+    Lst 	nl;
+    ListNode  	ln;
+    List 	list = l;
+
+    if (!LstValid (l)) {
+	return NULL;
+    }
+
+    nl = Lst_Init(list->isCirc);
+    if (nl == NULL) {
+	return NULL;
+    }
+
+    ln = list->firstPtr;
+    while (ln != NULL) {
+	if (copyProc != NULL) {
+	    if (Lst_AtEnd(nl, copyProc(ln->datum)) == FAILURE) {
+		return NULL;
+	    }
+	} else if (Lst_AtEnd(nl, ln->datum) == FAILURE) {
+	    return NULL;
+	}
+
+	if (list->isCirc && ln == list->lastPtr) {
+	    ln = NULL;
+	} else {
+	    ln = ln->nextPtr;
+	}
+    }
+
+    return (nl);
+}