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Sprite 1984 - 1993
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Sprite 1984 - 1993.iso
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strsep.c,v
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1991-08-05
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117 lines
head 1.2;
branch ;
access ;
symbols ;
locks ; strict;
comment @ * @;
1.2
date 91.08.05.16.48.37; author shirriff; state Exp;
branches ;
next 1.1;
1.1
date 90.07.08.16.32.06; author shirriff; state Exp;
branches ;
next ;
desc
@Unix 5.1 strsep.c
@
1.2
log
@Added comments
@
text
@/*
* Copyright (c) 1988 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
static char rcsid[] = "$Header: /sprite/src/lib/c/string/RCS/strsep.c,v 1.1 90/06/27 11:39:30 shirriff Exp $ SPRITE (Berkeley)";
#endif /* not lint */
#include <stdio.h>
/*
*----------------------------------------------------------------------
*
* strsep --
*
* Extract tokens separated by single separators (similar to strtok).
*
* Results:
* Returns pointer to next token in the string.
*
* Side effects:
* Sets token to NULL. Keeps track of str.
*
*----------------------------------------------------------------------
*/
char *
strsep(s, delim)
register char *s, *delim;
{
register char *spanp;
register int c, sc;
static char *last;
char *tok;
if (s == NULL && (s = last) == NULL)
return(NULL);
/*
* Scan token (scan for delimiters: s += strcspn(s, delim), sort of).
* Note that delim must have one NUL; we stop if we see that, too.
*/
for (tok = s;; ++s) {
c = *s;
spanp = delim;
do {
if ((sc = *spanp++) == c) {
if (c == 0) {
last = NULL;
return(tok == s ? NULL : tok);
}
*s++ = '\0';
last = s;
return(tok);
}
} while (sc);
}
/* NOTREACHED */
}
@
1.1
log
@Initial revision
@
text
@d18 3
a20 3
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@@(#)strsep.c 5.1 (Berkeley) 9/19/88";
#endif /* LIBC_SCCS and not lint */
d23 16
@