Initial commit

1 files changed, 238 insertions, 0 deletions

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..8faac24
--- /dev/null
+++ b/main.c
@@ -0,0 +1,238 @@
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <linux/input.h>
+#include <termios.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <string.h>
+
+#define PROGRAM_NAME "kl"
+
+static struct termios original_term;
+const char *key_names[256] = {0};
+
+void init_key_names() {
+	key_names[KEY_Q] = "Q";
+	key_names[KEY_W] = "W";
+	key_names[KEY_E] = "E";
+	key_names[KEY_R] = "R";
+	key_names[KEY_T] = "T";
+	key_names[KEY_Y] = "Y";
+	key_names[KEY_U] = "U";
+	key_names[KEY_I] = "I";
+	key_names[KEY_O] = "O";
+	key_names[KEY_P] = "P";
+	key_names[KEY_A] = "A";
+	key_names[KEY_S] = "S";
+	key_names[KEY_D] = "D";
+	key_names[KEY_F] = "F";
+	key_names[KEY_G] = "G";
+	key_names[KEY_H] = "H";
+	key_names[KEY_J] = "J";
+	key_names[KEY_K] = "K";
+	key_names[KEY_L] = "L";
+	key_names[KEY_Z] = "Z";
+	key_names[KEY_X] = "X";
+	key_names[KEY_C] = "C";
+	key_names[KEY_V] = "V";
+	key_names[KEY_B] = "B";
+	key_names[KEY_N] = "N";
+	key_names[KEY_M] = "M";
+
+	key_names[KEY_1] = "1";
+	key_names[KEY_2] = "2";
+	key_names[KEY_3] = "3";
+	key_names[KEY_4] = "4";
+	key_names[KEY_5] = "5";
+	key_names[KEY_6] = "6";
+	key_names[KEY_7] = "7";
+	key_names[KEY_8] = "8";
+	key_names[KEY_9] = "9";
+	key_names[KEY_0] = "0";
+
+	key_names[KEY_MINUS] = "-";
+	key_names[KEY_EQUAL] = "=";
+	key_names[KEY_LEFTBRACE] = "[";
+	key_names[KEY_RIGHTBRACE] = "]";
+	key_names[KEY_SEMICOLON] = ";";
+	key_names[KEY_APOSTROPHE] = "'";
+	key_names[KEY_GRAVE] = "`";
+	key_names[KEY_BACKSLASH] = "\\";
+	key_names[KEY_COMMA] = ",";
+	key_names[KEY_DOT] = ".";
+	key_names[KEY_SLASH] = "/";
+	key_names[KEY_SPACE] = "<SPACE>";
+
+	key_names[KEY_ESC] = "<ESC>";
+	key_names[KEY_BACKSPACE] = "<BACKSPACE>";
+	key_names[KEY_TAB] = "<TAB>";
+	key_names[KEY_ENTER] = "<ENTER>";
+	key_names[KEY_LEFTSHIFT] = "<L_SHIFT>";
+	key_names[KEY_RIGHTSHIFT] = "<R_SHIFT>";
+	key_names[KEY_LEFTCTRL] = "<L_CTRL>";
+	key_names[KEY_RIGHTCTRL] = "<R_CTRL>";
+	key_names[KEY_LEFTALT] = "<L_ALT>";
+	key_names[KEY_RIGHTALT] = "<R_ALT>";
+	key_names[KEY_LEFTMETA] = "<L_META>";
+	key_names[KEY_RIGHTMETA] = "<R_META>";
+	key_names[KEY_CAPSLOCK] = "<CAPSLOCK>";
+	key_names[KEY_NUMLOCK] = "<NUMLOCK>";
+	key_names[KEY_SCROLLLOCK] = "<SCROLLLOCK>";
+
+	key_names[KEY_F1] = "<F1>";
+	key_names[KEY_F2] = "<F2>";
+	key_names[KEY_F3] = "<F3>";
+	key_names[KEY_F4] = "<F4>";
+	key_names[KEY_F5] = "<F5>";
+	key_names[KEY_F6] = "<F6>";
+	key_names[KEY_F7] = "<F7>";
+	key_names[KEY_F8] = "<F8>";
+	key_names[KEY_F9] = "<F9>";
+	key_names[KEY_F10] = "<F10>";
+	key_names[KEY_F11] = "<F11>";
+	key_names[KEY_F12] = "<F12>";
+	key_names[KEY_F13] = "<F13>";
+	key_names[KEY_F14] = "<F14>";
+	key_names[KEY_F15] = "<F15>";
+	key_names[KEY_F16] = "<F16>";
+	key_names[KEY_F17] = "<F17>";
+	key_names[KEY_F18] = "<F18>";
+	key_names[KEY_F19] = "<F19>";
+	key_names[KEY_F20] = "<F20>";
+	key_names[KEY_F21] = "<F21>";
+	key_names[KEY_F22] = "<F22>";
+	key_names[KEY_F23] = "<F23>";
+	key_names[KEY_F24] = "<F24>";
+
+	key_names[KEY_KP0] = "<KP0>";
+	key_names[KEY_KP1] = "<KP1>";
+	key_names[KEY_KP2] = "<KP2>";
+	key_names[KEY_KP3] = "<KP3>";
+	key_names[KEY_KP4] = "<KP4>";
+	key_names[KEY_KP5] = "<KP5>";
+	key_names[KEY_KP6] = "<KP6>";
+	key_names[KEY_KP7] = "<KP7>";
+	key_names[KEY_KP8] = "<KP8>";
+	key_names[KEY_KP9] = "<KP9>";
+	key_names[KEY_KPDOT] = "<KP.>";
+	key_names[KEY_KPCOMMA] = "<KP,>";
+	key_names[KEY_KPENTER] = "<KPENTER>";
+	key_names[KEY_KPMINUS] = "<KP->";
+	key_names[KEY_KPPLUS] = "<KP+>";
+	key_names[KEY_KPSLASH] = "<KP/>";
+	key_names[KEY_KPASTERISK] = "<KP*>";
+	key_names[KEY_KPEQUAL] = "<KP=>";
+
+	key_names[KEY_UP] = "<UP>";
+	key_names[KEY_DOWN] = "<DOWN>";
+	key_names[KEY_LEFT] = "<LEFT>";
+	key_names[KEY_RIGHT] = "<RIGHT>";
+	key_names[KEY_HOME] = "<HOME>";
+	key_names[KEY_END] = "<END>";
+	key_names[KEY_PAGEUP] = "<PAGEUP>";
+	key_names[KEY_PAGEDOWN] = "<PAGEDOWN>";
+	key_names[KEY_INSERT] = "<INSERT>";
+	key_names[KEY_DELETE] = "<DELETE>";
+
+	key_names[KEY_MUTE] = "<MUTE>";
+	key_names[KEY_VOLUMEDOWN] = "<VOLUMEDOWN>";
+	key_names[KEY_VOLUMEUP] = "<VOLUMEUP>";
+	key_names[KEY_POWER] = "<POWER>";
+	key_names[KEY_SLEEP] = "<SLEEP>";
+	key_names[KEY_WAKEUP] = "<WAKEUP>";
+	key_names[KEY_PLAY] = "<PLAY>";
+	key_names[KEY_PAUSE] = "<PAUSE>";
+	key_names[KEY_PLAYPAUSE] = "<PLAYPAUSE>";
+	key_names[KEY_STOPCD] = "<STOP>";
+	key_names[KEY_PREVIOUSSONG] = "<PREVIOUS>";
+	key_names[KEY_NEXTSONG] = "<NEXT>";
+	key_names[KEY_REWIND] = "<REWIND>";
+	key_names[KEY_FASTFORWARD] = "<FASTFORWARD>";
+	key_names[KEY_RECORD] = "<RECORD>";
+	key_names[KEY_EJECTCD] = "<EJECT>";
+
+	key_names[KEY_SYSRQ] = "<SYSRQ>";
+	key_names[KEY_PAUSE] = "<PAUSE>";
+	key_names[KEY_MENU] = "<MENU>";
+	key_names[KEY_CALC] = "<CALC>";
+	key_names[KEY_MAIL] = "<MAIL>";
+	key_names[KEY_WWW] = "<WWW>";
+	key_names[KEY_SEARCH] = "<SEARCH>";
+	key_names[KEY_BACK] = "<BACK>";
+	key_names[KEY_FORWARD] = "<FORWARD>";
+	key_names[KEY_REFRESH] = "<REFRESH>";
+	key_names[KEY_STOP] = "<STOP>";
+	key_names[KEY_COPY] = "<COPY>";
+	key_names[KEY_CUT] = "<CUT>";
+	key_names[KEY_PASTE] = "<PASTE>";
+	key_names[KEY_UNDO] = "<UNDO>";
+	key_names[KEY_REDO] = "<REDO>";
+	key_names[KEY_FIND] = "<FIND>";
+	key_names[KEY_HELP] = "<HELP>";
+	key_names[KEY_FILE] = "<FILE>";
+	key_names[KEY_SAVE] = "<SAVE>";
+	key_names[KEY_NEW] = "<NEW>";
+	key_names[KEY_OPEN] = "<OPEN>";
+	key_names[KEY_CLOSE] = "<CLOSE>";
+	key_names[KEY_EXIT] = "<EXIT>";
+	key_names[KEY_PRINT] = "<PRINT>";
+	key_names[KEY_BRIGHTNESSDOWN] = "<BRIGHTNESSDOWN>";
+	key_names[KEY_BRIGHTNESSUP] = "<BRIGHTNESSUP>";
+	key_names[KEY_DISPLAY_OFF] = "<DISPLAYOFF>";
+	key_names[KEY_MICMUTE] = "<MICMUTE>";
+	key_names[KEY_WLAN] = "<WLAN>";
+	key_names[KEY_BLUETOOTH] = "<BLUETOOTH>";
+}
+
+void usage() {
+	printf("Usage: %s <EVENT_FILE_PATH>.\n", PROGRAM_NAME);
+}
+
+void disable_term_echo() {
+	struct termios new_setting, init_setting;
+	tcgetattr(0, &init_setting);
+	new_setting = init_setting;
+
+	new_setting.c_lflag&=~ECHO;
+	tcsetattr(0, TCSANOW, &new_setting);
+}
+
+void enable_term_echo() {
+	tcsetattr(0, TCSANOW, &original_term);
+}
+
+int main(int argc,  char** argv) {
+	if (argc != 2 || strcmp(argv[1], "--help") == 0) {
+		usage();
+		return -1;
+	}
+
+	disable_term_echo();
+
+	struct input_event ie;
+	int fd = open(argv[1], O_RDONLY);
+
+	if (fd == -1 && errno == EACCES) {
+		printf("Permission denied: please run %s with sudo.\n", PROGRAM_NAME);
+		return -1;
+	}
+
+	init_key_names();
+
+	while (1) {
+		read(fd, &ie, sizeof(ie));
+
+		if (ie.type == EV_KEY && ie.value == 2)  {
+			continue;
+		}
+
+		if (key_names[ie.code] != NULL && ie.value == 1) {
+			printf("%s\n", key_names[ie.code]);
+		}
+
+	}
+
+	enable_term_echo();
+	return 0;
+}