36 lines
877 B
C
36 lines
877 B
C
/*
|
|
* This file is part of the UCB release of Plan 9. It is subject to the license
|
|
* terms in the LICENSE file found in the top-level directory of this
|
|
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
|
|
* part of the UCB release of Plan 9, including this file, may be copied,
|
|
* modified, propagated, or distributed except according to the terms contained
|
|
* in the LICENSE file.
|
|
*/
|
|
|
|
#include <u.h>
|
|
#include <libc.h>
|
|
|
|
|
|
/*
|
|
* Return pointer to first occurrence of s2 in s1,
|
|
* 0 if none
|
|
*/
|
|
char*
|
|
jehanne_utfutf(const char *s1, const char *s2)
|
|
{
|
|
const char *p;
|
|
int32_t f, n1, n2;
|
|
Rune r;
|
|
|
|
n1 = jehanne_chartorune(&r, s2);
|
|
f = r;
|
|
if(f <= Runesync) /* represents self */
|
|
return jehanne_strstr(s1, s2);
|
|
|
|
n2 = jehanne_strlen(s2);
|
|
for(p=s1; p=jehanne_utfrune(p, f); p+=n1)
|
|
if(jehanne_strncmp(p, s2, n2) == 0)
|
|
return (char*)p;
|
|
return 0;
|
|
}
|