ref: 92b6828b685786dc6d7a4e0435d371b574fe5f28
dir: /sys/src/libhttpd/urlfmt.c/
#include <u.h>
#include <libc.h>
#include <bin.h>
#include <httpd.h>
int
hurlfmt(Fmt *f)
{
char buf[HMaxWord*2];
Rune r;
char *s;
int t;
s = va_arg(f->args, char*);
for(t = 0; t < sizeof(buf) - 8; ){
s += chartorune(&r, s);
if(r == 0)
break;
if(r <= ' ' || r == '%' || r >= Runeself)
t += snprint(&buf[t], sizeof(buf)-t, "%%%2.2x", r);
else
buf[t++] = r;
}
buf[t] = 0;
return fmtstrcpy(f, buf);
}