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Annotation of 42BSD/usr.bin/struct/0.list.c, revision 1.1

1.1     ! root        1: #ifndef lint
        !             2: static char sccsid[] = "@(#)0.list.c   4.1     (Berkeley)      2/11/83";
        !             3: #endif not lint
        !             4: 
        !             5: #include <stdio.h>
        !             6: #include "def.h"
        !             7: 
        !             8: struct list *consls(v,ls)              /* make list */
        !             9: VERT v;
        !            10: struct list *ls;
        !            11:        {
        !            12:        struct list *temp;
        !            13:        temp = challoc(sizeof(*temp));
        !            14:        temp->elt = v;
        !            15:        temp->nxtlist = ls;
        !            16:        return(temp);
        !            17:        }
        !            18: 
        !            19: struct list *append(v,ls)              /* return ls . v */
        !            20: VERT v;
        !            21: struct list *ls;
        !            22:        {
        !            23:        struct list *temp;
        !            24:        if (!ls) return(consls(v,0));
        !            25:        for (temp = ls; temp -> nxtlist; temp = temp->nxtlist)
        !            26:                ;
        !            27:        temp->nxtlist = consls(v,0);
        !            28:        return(ls);
        !            29:        }
        !            30: 
        !            31: 
        !            32: freelst(ls)
        !            33: struct list *ls;
        !            34:        {
        !            35:        if (!ls) return;
        !            36:        if (ls->nxtlist)
        !            37:                freelst(ls->nxtlist);
        !            38:        chfree(ls,sizeof(*ls));
        !            39:        }
        !            40: 
        !            41: 
        !            42: oneelt(ls)             /* return w if w is only elt of ls, UNDEFINED otherwise */
        !            43: struct list *ls;
        !            44:        {
        !            45:        if (!ls) return(UNDEFINED);
        !            46:        if (ls->nxtlist) return(UNDEFINED);
        !            47:        return(ls->elt);
        !            48:        }
        !            49: 
        !            50: 
        !            51: lslen(ls)              /* return number of elements in list ls */
        !            52: struct list *ls;
        !            53:        {
        !            54:        int count;
        !            55:        struct list *lp;
        !            56:        count = 0;
        !            57:        for (lp = ls; lp; lp = lp->nxtlist)
        !            58:                ++count;
        !            59:        return(count);
        !            60:        }
        !            61: 
        !            62: 
        !            63: prlst(ls)
        !            64: struct list *ls;
        !            65:        {
        !            66:        struct list *lp;
        !            67:        for (lp = ls; lp; lp = lp->nxtlist)
        !            68:                printf("%d,",lp->elt);
        !            69:        fprintf(stderr,"\n");
        !            70:        }

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