Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>

#define N       256

long
strspn(char *s, char *b)
{
        char map[N], *os;

        memset(map, 0, N);
        while(*b)
                map[*(uchar *)b++] = 1;
        os = s;
        while(map[*(uchar *)s++])
                ;
        return s - os - 1;
}