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Annotation of 43BSDTahoe/lib/libc/compat-sys5/strtok.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1985 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  */
        !            17: 
        !            18: #if defined(LIBC_SCCS) && !defined(lint)
        !            19: static char sccsid[] = "@(#)strtok.c   5.4 (Berkeley) 6/27/88";
        !            20: #endif /* LIBC_SCCS and not lint */
        !            21: 
        !            22: char *
        !            23: strtok(s, sep)
        !            24:        register char *s, *sep;
        !            25: {
        !            26:        register char *p;
        !            27:        register c;
        !            28:        static char *lasts;
        !            29: 
        !            30:        if (s == 0)
        !            31:                s = lasts;
        !            32:        if (s == 0)
        !            33:                return (0);
        !            34: 
        !            35:        while (c = *s) {
        !            36:                if (!index(sep, c))
        !            37:                        break;
        !            38:                s++;
        !            39:        }
        !            40: 
        !            41:        if (c == '\0') {
        !            42:                lasts = 0;
        !            43:                return (0);
        !            44:        }
        !            45: 
        !            46:        for (p = s; c = *++p; )
        !            47:                if (index(sep, c))
        !            48:                        break;
        !            49: 
        !            50:        if (c == '\0')
        !            51:                lasts = 0;
        !            52:        else {
        !            53:                *p++ = '\0';
        !            54:                lasts = p;
        !            55:        }
        !            56:        return (s);
        !            57: }

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