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#include <u.h>
#include <libc.h>
#include <keyboard.h>
static int lightstep = 5, volstep = 3;
static int light, vol, mod;
static void
process(char *s)
{
char b[128], *p;
int n, o;
Rune r;
if(*s == 'K' && s[1] == 0)
mod = 0;
o = 0;
b[o++] = *s;
for(p = s+1; *p != 0; p += n){
if((n = chartorune(&r, p)) == 1 && r == Runeerror){
/* bail out */
n = strlen(p);
memmove(b+o, p, n);
o += n;
p += n;
break;
}
if(*s == 'k' && r == Kmod4){
mod = 1;
}else if(*s == 'K'){
if(mod && r >= (KF|1) && r <= (KF|4))
continue;
if(r == Kmod4)
mod = 0;
}else if(mod && r >= (KF|1) && r <= (KF|4)){
if(*s == 'c'){
if(r == (KF|1))
fprint(light, "lcd %+d", -lightstep);
else if(r == (KF|2))
fprint(light, "lcd %+d", lightstep);
else if(r == (KF|3))
fprint(vol, "master %+d", -volstep);
else if(r == (KF|4))
fprint(vol, "master %+d", volstep);
}
continue;
}
memmove(b+o, p, n);
o += n;
}
/* all runes filtered out - ignore completely */
if(o == 1 && p-s > 1)
return;
b[o++] = 0;
if(write(1, b, o) != o)
exits(nil);
}
static void
usage(void)
{
fprint(2, "usage: [-l light_step] [-v vol_step] %s\n", argv0);
exits("usage");
}
void
main(int argc, char **argv)
{
char b[128];
int i, j, n;
ARGBEGIN{
case 'l':
lightstep = atoi(EARGF(usage()));
break;
case 'v':
volstep = atoi(EARGF(usage()));
break;
default:
usage();
}ARGEND
light = open("/dev/light", OWRITE);
vol = open("/dev/volume", OWRITE);
for(i = 0;;){
if((n = read(0, b+i, sizeof(b)-i)) <= 0)
break;
n += i;
for(j = 0; j < n; j++){
if(b[j] == 0){
process(b+i);
i = j+1;
}
}
memmove(b, b+i, j-i);
i -= j;
}
exits(nil);
}
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