"Fossies" - the Fresh Open Source Software Archive

Member "scanssh-2.1/strsep.c" (31 Mar 2004, 2827 Bytes) of package /linux/privat/old/scanssh-2.1.tar.gz:

    1 /*  $OpenBSD: strsep.c,v 1.3 1997/08/20 04:28:14 millert Exp $  */
    2 
    3 /*-
    4  * Copyright (c) 1990, 1993
    5  *  The Regents of the University of California.  All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. All advertising materials mentioning features or use of this software
   16  *    must display the following acknowledgement:
   17  *  This product includes software developed by the University of
   18  *  California, Berkeley and its contributors.
   19  * 4. Neither the name of the University nor the names of its contributors
   20  *    may be used to endorse or promote products derived from this software
   21  *    without specific prior written permission.
   22  *
   23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   33  * SUCH DAMAGE.
   34  */
   35 
   36 #include <sys/types.h>
   37 #include <string.h>
   38 #include <stdio.h>
   39 
   40 #include "config.h"
   41 
   42 /*
   43  * Get next token from string *stringp, where tokens are possibly-empty
   44  * strings separated by characters from delim.  
   45  *
   46  * Writes NULs into the string at *stringp to end tokens.
   47  * delim need not remain constant from call to call.
   48  * On return, *stringp points past the last NUL written (if there might
   49  * be further tokens), or is NULL (if there are definitely no more tokens).
   50  *
   51  * If *stringp is NULL, strsep returns NULL.
   52  */
   53 char *
   54 strsep(char **stringp, const char *delim)
   55 {
   56     register char *s;
   57     register const char *spanp;
   58     register int c, sc;
   59     char *tok;
   60 
   61     if ((s = *stringp) == NULL)
   62         return (NULL);
   63     for (tok = s;;) {
   64         c = *s++;
   65         spanp = delim;
   66         do {
   67             if ((sc = *spanp++) == c) {
   68                 if (c == 0)
   69                     s = NULL;
   70                 else
   71                     s[-1] = 0;
   72                 *stringp = s;
   73                 return (tok);
   74             }
   75         } while (sc != 0);
   76     }
   77     /* NOTREACHED */
   78 }