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- 1.4
- date 88.11.17.20.52.21; author adam; state Exp;
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- @checked in with -k by kupfer at 92.05.18.17.32.36.
- @
- text
- @/*-
- * listDupl.c --
- * Duplicate a list. This includes duplicating the individual
- * elements.
- *
- * Copyright (c) 1988 by the Regents of the University of California
- *
- */
- #ifndef lint
- static char *rcsid =
- "$Id: lstDupl.c,v 1.4 88/11/17 20:52:21 adam Exp $ SPRITE (Berkeley)";
- #endif lint
-
- #include "lstInt.h"
-
- /*-
- *-----------------------------------------------------------------------
- * Lst_Duplicate --
- * Duplicate an entire list. If a function to copy a ClientData is
- * given, the individual client elements will be duplicated as well.
- *
- * Results:
- * The new Lst structure or NILLST if failure.
- *
- * Side Effects:
- * A new list is created.
- *-----------------------------------------------------------------------
- */
- Lst
- Lst_Duplicate (l, copyProc)
- Lst l; /* the list to duplicate */
- ClientData (*copyProc)(); /* A function to duplicate each ClientData */
- {
- register Lst nl;
- register ListNode ln;
- register List list = (List)l;
-
- if (!LstValid (l)) {
- return (NILLST);
- }
-
- nl = Lst_Init (list->isCirc);
- if (nl == NILLST) {
- return (NILLST);
- }
-
- ln = list->firstPtr;
- while (ln != NilListNode) {
- if (copyProc != NOCOPY) {
- if (Lst_AtEnd (nl, (*copyProc) (ln->datum)) == FAILURE) {
- return (NILLST);
- }
- } else if (Lst_AtEnd (nl, ln->datum) == FAILURE) {
- return (NILLST);
- }
-
- if (list->isCirc && ln == list->lastPtr) {
- ln = NilListNode;
- } else {
- ln = ln->nextPtr;
- }
- }
-
- return (nl);
- }
- @
-