ref: c76cc12a1799ce214b07882eb6f4ab0906c0151b
dir: /sys/src/cmd/mothra/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); }