conterm/gui-win32/wstrtoutf.c
Russ Cox 934846f35c a
2005-08-08 12:50:13 +00:00

36 lines
408 B
C

#include <u.h>
#include <libc.h>
int
wstrutflen(Rune *s)
{
int n;
for(n=0; *s; n+=runelen(*s),s++)
;
return n;
}
int
wstrtoutf(char *s, Rune *t, int n)
{
int i;
char *s0;
s0 = s;
if(n <= 0)
return wstrutflen(t)+1;
while(*t) {
if(n < UTFmax+1 && n < runelen(*t)+1) {
*s = 0;
return i+wstrutflen(t)+1;
}
i = runetochar(s, t);
s += i;
n -= i;
t++;
}
*s = 0;
return s-s0;
}