mirror of
https://github.com/0intro/conterm
synced 2024-11-26 07:29:35 +03:00
31 lines
401 B
C
31 lines
401 B
C
|
#include <u.h>
|
||
|
|
#include <libc.h>
|
||
|
|
|
||
|
|
char*
|
||
|
|
utfrune(char *s, long c)
|
||
|
|
{
|
||
|
|
long c1;
|
||
|
|
Rune r;
|
||
|
|
int n;
|
||
|
|
|
||
|
|
if(c < Runesync) /* not part of utf sequence */
|
||
|
|
return strchr(s, c);
|
||
|
|
|
||
|
|
for(;;) {
|
||
|
|
c1 = *(uchar*)s;
|
||
|
|
if(c1 < Runeself) { /* one byte rune */
|
||
|
|
if(c1 == 0)
|
||
|
|
return 0;
|
||
|
|
if(c1 == c)
|
||
|
|
return s;
|
||
|
|
s++;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
n = chartorune(&r, s);
|
||
|
|
if(r == c)
|
||
|
|
return s;
|
||
|
|
s += n;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|