1*8ccd4a63SDavid du Colombier #include <u.h>
2*8ccd4a63SDavid du Colombier #include <libc.h>
3*8ccd4a63SDavid du Colombier
4*8ccd4a63SDavid du Colombier
5*8ccd4a63SDavid du Colombier /*
6*8ccd4a63SDavid du Colombier * Return pointer to first occurrence of s2 in s1,
7*8ccd4a63SDavid du Colombier * 0 if none
8*8ccd4a63SDavid du Colombier */
9*8ccd4a63SDavid du Colombier char*
utfutf(char * s1,char * s2)10*8ccd4a63SDavid du Colombier utfutf(char *s1, char *s2)
11*8ccd4a63SDavid du Colombier {
12*8ccd4a63SDavid du Colombier char *p;
13*8ccd4a63SDavid du Colombier long f, n1, n2;
14*8ccd4a63SDavid du Colombier Rune r;
15*8ccd4a63SDavid du Colombier
16*8ccd4a63SDavid du Colombier n1 = chartorune(&r, s2);
17*8ccd4a63SDavid du Colombier f = r;
18*8ccd4a63SDavid du Colombier if(f <= Runesync) /* represents self */
19*8ccd4a63SDavid du Colombier return strstr(s1, s2);
20*8ccd4a63SDavid du Colombier
21*8ccd4a63SDavid du Colombier n2 = strlen(s2);
22*8ccd4a63SDavid du Colombier for(p=s1; (p=utfrune(p, f)); p+=n1)
23*8ccd4a63SDavid du Colombier if(strncmp(p, s2, n2) == 0)
24*8ccd4a63SDavid du Colombier return p;
25*8ccd4a63SDavid du Colombier return 0;
26*8ccd4a63SDavid du Colombier }
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