minix/lib/ansi/strtok.c
2005-04-21 14:53:53 +00:00

31 lines
616 B
C
Executable file

/*
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
* See the copyright notice in the ACK home directory, in the file "Copyright".
*/
/* $Header$ */
#include <string.h>
char *
strtok(register char *string, const char *separators)
{
register char *s1, *s2;
static char *savestring;
if (string == NULL) {
string = savestring;
if (string == NULL) return (char *)NULL;
}
s1 = string + strspn(string, separators);
if (*s1 == '\0') {
savestring = NULL;
return (char *)NULL;
}
s2 = strpbrk(s1, separators);
if (s2 != NULL)
*s2++ = '\0';
savestring = s2;
return s1;
}