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[FILE BEGIN]
1/**
2 * Key detect (main.c)
3 * A simple program to detect keypresses.
4 * Github: https://www.github.com/0x4248/key_detect
5 * Licence: GNU General Public License v3.0
6 * By: 0x4248
7 */
8
9#include <stdbool.h>
10#include <stdio.h>
11#include <stdlib.h>
12#include <termios.h>
13#include <unistd.h>
14
15int main(int argc, char *argv[]) {
16    bool binary_mode = false;
17    bool hex_mode = false;
18
19    /* Argument parsing */
20    if (argc > 1) {
21        if (argv[1][0] == '-' && argv[1][1] == 'b') {
22            binary_mode = true;
23        } else if (argv[1][0] == '-' && argv[1][1] == 'h') {
24            printf("Usage: key_detect [-b]\n");
25            printf("  -b\tBinary mode. Prints the binary representation of the "
26                   "keypress.\n");
27            printf("  -x\tHexadecimal mode. Prints the hexadecimal "
28                   "representation of the keypress.\n");
29            printf("  -h\tPrints this help message.\n");
30            return EXIT_SUCCESS;
31        } else if (argv[1][0] == '-' && argv[1][1] == '-' &&
32                       argv[1][2] == 'h' && argv[1][3] == 'e' &&
33                       argv[1][4] == 'x' ||
34                   argv[1][0] == '-' && argv[1][1] == 'x') {
35            hex_mode = true;
36        }
37    }
38
39    struct termios oldt, newt;
40    int ch;
41    tcgetattr(STDIN_FILENO, &oldt);
42    newt = oldt;
43    newt.c_lflag &= ~(ICANON | ECHO);
44    tcsetattr(STDIN_FILENO, TCSANOW, &newt);
45
46    printf("Listening for keypresses.\nPress Ctrl+C to stop listening and "
47           "exit.\n");
48
49    while (true) {
50        /* Main loop */
51        ch = getchar();
52        if (binary_mode) {
53            for (int i = 7; i >= 0; i--) {
54                printf("%d", (ch >> i) & 1);
55            }
56            printf("\n");
57        } else if (hex_mode) {
58            printf("Code: 0x%x\tCharacter: %c\n", ch, ch);
59            fflush(stdout);
60        } else {
61            printf("Code: %d\tCharacter: %c\n", ch, ch);
62            fflush(stdout);
63        }
64    }
65
66    tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
67
68    return EXIT_SUCCESS;
69}
[FILE END]
(C) 2025 0x4248
(C) 2025 4248 Media and 4248 Systems, All part of 0x4248
See LICENCE files for more information. Not all files are by 0x4248 always check Licencing.