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#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <inttypes.h>
#include <fcntl.h>
#include <time.h>
#include <termios.h>
#include <sys/time.h>
#include "ttytools.h"
static struct termios saved_attributes;
static int saved_fl;
void tty_raw(void)
{
struct termios tattr;
fcntl(STDIN_FILENO, F_GETFL, &saved_fl);
tcgetattr (0, &saved_attributes);
fcntl(STDIN_FILENO, F_SETFL, O_NONBLOCK);
memcpy(&tattr,&saved_attributes,sizeof(struct termios));
tattr.c_lflag &= ~(ICANON|ECHO);
tattr.c_cc[VMIN] = 1;
tattr.c_cc[VTIME] = 0;
tcsetattr(STDIN_FILENO, TCSAFLUSH, &tattr);
}
void tty_restore(void)
{
fcntl(STDIN_FILENO, F_SETFL, saved_fl);
tcsetattr(STDIN_FILENO, TCSANOW, &saved_attributes);
}
int kbd_wait(int timeout)
{
struct timeval limit;
fd_set set;
int rc;
FD_ZERO(&set);
FD_SET(STDIN_FILENO, &set);
limit.tv_sec = timeout;
limit.tv_usec = 0;
rc = select(STDIN_FILENO + 1, &set, NULL, NULL,
timeout ? &limit : NULL);
return rc;
}
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