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Annotation of 43BSD/lib/libc/compat-sys5/strtok.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1980 Regents of the University of California.
                      3:  * All rights reserved.  The Berkeley software License Agreement
                      4:  * specifies the terms and conditions for redistribution.
                      5:  */
                      6: 
                      7: /*
                      8:  * Sys5 compat routine
                      9:  */
                     10: 
                     11: #if defined(LIBC_SCCS) && !defined(lint)
                     12: static char sccsid[] = "@(#)strtok.c   5.2 (Berkeley) 86/03/09";
                     13: #endif
                     14: 
                     15: char *
                     16: strtok(s, sep)
                     17:        register char *s, *sep;
                     18: {
                     19:        register char *p;
                     20:        register c;
                     21:        static char *lasts;
                     22: 
                     23:        if (s == 0)
                     24:                s = lasts;
                     25:        if (s == 0)
                     26:                return (0);
                     27: 
                     28:        while (c = *s) {
                     29:                if (!index(sep, c))
                     30:                        break;
                     31:                s++;
                     32:        }
                     33: 
                     34:        if (c == '\0') {
                     35:                lasts = 0;
                     36:                return (0);
                     37:        }
                     38: 
                     39:        for (p = s; c = *++p; )
                     40:                if (index(sep, c))
                     41:                        break;
                     42: 
                     43:        if (c == '\0')
                     44:                lasts = 0;
                     45:        else {
                     46:                *p++ = '\0';
                     47:                lasts = p;
                     48:        }
                     49:        return (s);
                     50: }

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