Subversion Repositories planix.SVN

#include <u.h>

#include <libc.h>

#define	N	256

char*

strtok(char *s, char *b)

{

	static char *under_rock;

	char map[N], *os;

	memset(map, 0, N);

	while(*b)

		map[*(uchar*)b++] = 1;

	if(s == 0)

		s = under_rock;

	while(map[*(uchar*)s++])

		;

	if(*--s == 0)

		return 0;

	os = s;

	while(map[*(uchar*)s] == 0)

		if(*s++ == 0) {

			under_rock = s-1;

			return os;

		}

	*s++ = 0;

	under_rock = s;

	return os;

}