reactos/lib/sdk/crt/mbstring/mbstok.c

58 lines
1 KiB
C
Raw Normal View History

#include <stdlib.h>
#include <mbstring.h>
/*
* @implemented
*/
unsigned char * _mbstok(unsigned char *s, const unsigned char *delim)
{
const unsigned char *spanp;
int c, sc;
unsigned char *tok;
static unsigned char *last;
if (s == NULL && (s = last) == NULL)
return (NULL);
/*
* Skip (span) leading delimiters (s += strspn(s, delim), sort of).
*/
cont:
c = *s;
s = _mbsinc(s);
for (spanp = delim; (sc = *spanp) != 0; spanp = _mbsinc(spanp)) {
if (c == sc)
goto cont;
}
if (c == 0) { /* no non-delimiter characters */
last = NULL;
return (NULL);
}
tok = s - 1;
/*
* 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 (;;) {
c = *s;
s = _mbsinc(s);
spanp = delim;
do {
if ((sc = *spanp) == c) {
if (c == 0)
s = NULL;
else
s[-1] = 0;
last = s;
return (tok);
}
spanp = _mbsinc(spanp);
} while (sc != 0);
}
/* NOTREACHED */
}