Subversion Repositories planix.SVN

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


/*
 * Return pointer to first occurrence of s2 in s1,
 * 0 if none
 */
char*
utfutf(char *s1, char *s2)
{
        char *p;
        long f, n1, n2;
        Rune r;

        n1 = chartorune(&r, s2);
        f = r;
        if(f <= Runesync)               /* represents self */
                return strstr(s1, s2);

        n2 = strlen(s2);
        for(p=s1; p=utfrune(p, f); p+=n1)
                if(strncmp(p, s2, n2) == 0)
                        return p;
        return 0;
}