/*
* Read keyboard input until some key sequence has been recognized.
*/
int kbd_getch_raw(do_wait)
{
unsigned char key;
int i, esc_delay, time_to_wait, esc_count, delay;
esc_delay = config.escdelay ? config.escdelay * 1000 : 25000;
time_to_wait = config.kbdtimeout * 1000000;
check_for_key(1);
if(kbd.key || !do_wait) return kbd.key;
esc_count = 0;
for(;;) {
delay = esc_count ? esc_delay : KBD_TIMEOUT;
if(esc_count) esc_count--;
kbd_set_timeout(delay);
key = 0;
read(config.kbd_fd, &key, 1);
kbd_del_timeout();
if(do_wait && config.kbdtimeout && (time_to_wait -= delay) <= 0) {
/* fake 'Enter' */
kbd.pos = 0;
kbd.key = KEY_ENTER;
return kbd.key;
}
/* next 3 keys might be part of an esc sequence */
if(key == '\x1b') esc_count = 3;
if((i = utf8_enc_len(key)) > 1) esc_count = i - 1;
if(key) {
if(kbd.pos < sizeof kbd.buffer) kbd.buffer[kbd.pos++] = key;
check_for_key(0);
}
else {
check_for_key(1);
}
if(kbd.key || !do_wait) return kbd.key;
}
}
extern "C" void
clear_key_buffer(void)
{
while (check_for_key() != 0)
;
}
