Add version/help on ydotool client

Seems logical that the client has more those info than the server
as the server will be probably be run by an init system
It was missing on the client to make sure any user can quickly check
the hash (hopefully more tags) that is being used

Author: Paiusco

Client/ydotool.c

@@ -38,9 +38,14 @@
 
 #include <errno.h>
 #include <stdio.h>
+#include <getopt.h>
 
 #include <string.h>
 
+#ifndef VERSION
+#define VERSION "unknown"
+#endif
+
 struct tool_def {
 	char name[16];
 	void *ptr;
@@ -81,7 +86,10 @@ static const struct tool_def tool_list[] = {
 };
 
 static void show_help() {
-	puts("Usage: ydotool <cmd> <args>\n"
+	puts("Usage: ydotool [OPTION] <cmd> <args>\n"
+		"Options:\n"
+		"  -h, --help                 Display this help and exit\n"
+		"  -V, --version              Show version information\n"
 	     "Available commands:");
 
 	int tool_count = sizeof(tool_list) / sizeof(struct tool_def);
@@ -93,6 +101,11 @@ static void show_help() {
 	puts("Use environment variable YDOTOOL_SOCKET to specify daemon socket.");
 }
 
+static void show_version() {
+	puts("ydotool version(or hash): ");
+	puts(VERSION);
+}
+
 void uinput_emit(uint16_t type, uint16_t code, int32_t val, bool syn_report) {
 	struct input_event ie = {
 		.type = type,
@@ -112,9 +125,29 @@ void uinput_emit(uint16_t type, uint16_t code, int32_t val, bool syn_report) {
 }
 
 int main(int argc, char **argv) {
-	if (argc < 2 || strncmp(argv[1], "-h", 2) == 0 || strncmp(argv[1], "--h", 3) == 0 || strcmp(argv[1], "help") == 0) {
-		show_help();
-		return 0;
+
+	static struct option long_options[] = {
+		{"help", no_argument, 0, 'h'},
+		{"version", no_argument, 0, 'V'},
+	};
+
+	int opt = getopt_long(argc, argv, "hV", long_options, NULL);
+	if (opt != -1)
+	{
+		switch (opt) {
+			case 'h':
+				show_help();
+				exit(0);
+
+			case 'V':
+				show_version();
+				exit(0);
+
+			default:
+				puts("Not a valid option\n");
+				show_help();
+				exit(1);
+		}
 	}
 
 	int (*tool_main)(int argc, char **argv) = NULL;
@@ -129,7 +162,7 @@ int main(int argc, char **argv) {
 
 	if (!tool_main) {
 		printf("ydotool: Unknown command: %s\n"
-		       "Run 'ydotool help' if you want a command list\n", argv[1]);
+		       "Run 'ydotool --help' if you want a command list\n", argv[1]);
 		return 1;
 	}
 

Daemon/ydotoold.c

@@ -92,6 +92,7 @@ static void show_help() {
 }
 
 static void show_version() {
+	puts("ydotoold version(or hash): ");
 	puts(VERSION);
 }