55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <termios.h>
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#include <unistd.h>
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struct termios orig_termios;
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void die(const char *s) {
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perror(s);
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exit(1);
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}
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void disable_raw_mode() {
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if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &orig_termios) == -1)
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die("tcsetattr");
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}
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void enable_raw_mode() {
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if (tcgetattr(STDIN_FILENO, &orig_termios) == -1) die("tcgetattr");
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atexit(disable_raw_mode);
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struct termios raw = orig_termios;
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raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
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raw.c_oflag &= ~(OPOST);
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raw.c_cflag |= (CS8);
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raw.c_lflag &= ~(ECHO | ICANON | ISIG);
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raw.c_cc[VMIN] = 0;
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raw.c_cc[VTIME] = 1;
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if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw) == -1) die("tcsetattr");
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}
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int main() {
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enable_raw_mode();
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while (1) {
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char c = '\0';
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if (read(STDIN_FILENO, &c, 1) == -1 && errno != EAGAIN) die("read");
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if (iscntrl(c))
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printf("%d\r\n", c);
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else
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printf("%d ('%c')\r\n", c, c);
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if (c == 'q') break;
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}
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return 0;
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}
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