ref: 894d1d534e687fac3dae6cc64db07ad07f55a891
dir: /libpanel/utf.c/
#include <u.h>
#include <libc.h>
#include <draw.h>
#include <event.h>
#include <panel.h>
#include "pldefs.h"
/*
* This is the same definition that 8½ uses
*/
int pl_idchar(int c){
if(c<=' '
|| 0x7F<=c && c<=0xA0
|| utfrune("!\"#$%&'()*+,-./:;<=>?@`[\\]^{|}~", c))
return 0;
return 1;
}
int pl_rune1st(int c){
return (c&0xc0)!=0x80;
}
char *pl_nextrune(char *s){
do s++; while(!pl_rune1st(*s));
return s;
}
int pl_runewidth(Font *f, char *s){
char r[4], *t;
t=r;
do *t++=*s++; while(!pl_rune1st(*s));
*t='\0';
return stringwidth(f, r);
}