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#ifdef _WIN32
void getch_init(void) {}
#else
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdnoreturn.h>
#include <termios.h>
#include <unistd.h>
static struct termios default_state = {0};
int getch(void)
{
int ch = 0;
struct termios old = {0};
fflush(stdout);
tcgetattr(0, &old);
old.c_lflag &= ~ICANON;
tcsetattr(0, TCSANOW, &old);
ch = getchar();
tcsetattr(0, TCSADRAIN, &default_state);
return ch;
}
static void get_reset_terminal_state(void)
{
tcsetattr(0, TCSANOW, &default_state);
}
static noreturn void get_reset_terminal_state_handler(int sig)
{
get_reset_terminal_state();
_Exit(sig);
}
void getch_init(void)
{
tcgetattr(0, &default_state);
atexit(get_reset_terminal_state);
signal(SIGINT, get_reset_terminal_state_handler);
signal(SIGABRT, get_reset_terminal_state_handler);
signal(SIGFPE, get_reset_terminal_state_handler);
signal(SIGILL, get_reset_terminal_state_handler);
signal(SIGSEGV, get_reset_terminal_state_handler);
signal(SIGTERM, get_reset_terminal_state_handler);
}
#endif /* _WIN32 */
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