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Annotation of 43BSDReno/usr.bin/make/lst.lib/lstDupl.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * Adam de Boor.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms are permitted
        !             9:  * provided that: (1) source distributions retain this entire copyright
        !            10:  * notice and comment, and (2) distributions including binaries display
        !            11:  * the following acknowledgement:  ``This product includes software
        !            12:  * developed by the University of California, Berkeley and its contributors''
        !            13:  * in the documentation or other materials provided with the distribution
        !            14:  * and in all advertising materials mentioning features or use of this
        !            15:  * software. Neither the name of the University nor the names of its
        !            16:  * contributors may be used to endorse or promote products derived
        !            17:  * from this software without specific prior written permission.
        !            18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            19:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            20:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            21:  */
        !            22: 
        !            23: #ifndef lint
        !            24: static char sccsid[] = "@(#)lstDupl.c  5.3 (Berkeley) 6/1/90";
        !            25: #endif /* not lint */
        !            26: 
        !            27: /*-
        !            28:  * listDupl.c --
        !            29:  *     Duplicate a list. This includes duplicating the individual
        !            30:  *     elements.
        !            31:  */
        !            32: 
        !            33: #include    "lstInt.h"
        !            34: 
        !            35: /*-
        !            36:  *-----------------------------------------------------------------------
        !            37:  * Lst_Duplicate --
        !            38:  *     Duplicate an entire list. If a function to copy a ClientData is
        !            39:  *     given, the individual client elements will be duplicated as well.
        !            40:  *
        !            41:  * Results:
        !            42:  *     The new Lst structure or NILLST if failure.
        !            43:  *
        !            44:  * Side Effects:
        !            45:  *     A new list is created.
        !            46:  *-----------------------------------------------------------------------
        !            47:  */
        !            48: Lst
        !            49: Lst_Duplicate (l, copyProc)
        !            50:     Lst          l;             /* the list to duplicate */
        !            51:     ClientData   (*copyProc)(); /* A function to duplicate each ClientData */
        !            52: {
        !            53:     register Lst       nl;
        !            54:     register ListNode          ln;
        !            55:     register List      list = (List)l;
        !            56:     
        !            57:     if (!LstValid (l)) {
        !            58:        return (NILLST);
        !            59:     }
        !            60: 
        !            61:     nl = Lst_Init (list->isCirc);
        !            62:     if (nl == NILLST) {
        !            63:        return (NILLST);
        !            64:     }
        !            65: 
        !            66:     ln = list->firstPtr;
        !            67:     while (ln != NilListNode) {
        !            68:        if (copyProc != NOCOPY) {
        !            69:            if (Lst_AtEnd (nl, (*copyProc) (ln->datum)) == FAILURE) {
        !            70:                return (NILLST);
        !            71:            }
        !            72:        } else if (Lst_AtEnd (nl, ln->datum) == FAILURE) {
        !            73:            return (NILLST);
        !            74:        }
        !            75: 
        !            76:        if (list->isCirc && ln == list->lastPtr) {
        !            77:            ln = NilListNode;
        !            78:        } else {
        !            79:            ln = ln->nextPtr;
        !            80:        }
        !            81:     }
        !            82:        
        !            83:     return (nl);
        !            84: }

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