MAIN: Add a --version command line flag

src/cline.cpp

@@ -34,12 +34,14 @@
 
 #include "common/ustring.h"
 #include "common/util.h"
+#include "common/version.h"
 
 #include "common/configman.h"
 
 static void displayUsage(const char *name) {
 	std::printf("Usage: %s [options] [target]\n\n", name);
 	std::printf("          --help              This text\n");
+	std::printf("          --version           Display version information and exit\n");
 	std::printf("  -cFILE  --config=FILE       Load the config from file FILE\n");
 	std::printf("  -pDIR   --path=DIR          Override the game path with DIR\n");
 	std::printf("  -wSIZE  --width=SIZE        Set the window's width to SIZE\n");
@@ -78,6 +80,10 @@ static void displayUsage(const char *name) {
 	std::printf("\n");
 }
 
+static void displayVersion() {
+	std::printf("%s\n", XOREOS_NAMEVERSIONFULL);
+}
+
 static Common::UString convertShortToLongOption(char shortOption) {
 	if (shortOption == 'p')
 		return "path";
@@ -196,6 +202,12 @@ bool parseCommandline(int argc, char **argv, Common::UString &target, int &code)
 				return false;
 			}
 
+			if (!strcmp(argv[i], "--version")) {
+				code = 0;
+				displayVersion();
+				return false;
+			}
+
 			if (!parseOption(argv[i], key)) {
 				code = 1;
 				return false;