#include "key.h"

#include <string.h>
#include <unistd.h>
#include <sys/time.h>
#include <termios.h>

#define KEY_FD	0
static struct termios term_bak;

void
cui_key_enter(void)
{
	struct termios raw;

	tcgetattr(KEY_FD, &term_bak);
	cfmakeraw(&raw);
	raw.c_lflag &= ~FLUSHO;
	tcsetattr(KEY_FD, TCSANOW, &raw);
}

void
cui_key_exit(void)
{
	tcsetattr(KEY_FD, TCSANOW, &term_bak);
}

int
cui_key_get(void)
{
	fd_set rfs;
	struct timeval tm;
	int ret;
	unsigned char uc;

	FD_ZERO(&rfs);
	FD_SET(KEY_FD, &rfs);
	tm.tv_sec = 0;
	tm.tv_usec = 100*1000;
	ret = select(KEY_FD+1, &rfs, NULL, NULL, &tm);
	if(ret <= 0) return 0;

	if(read(KEY_FD, &uc, 1) != 1) return 0;
	return uc;
}

/* EOF */