All: Add --version flag

CHANGES

@@ -46,6 +46,7 @@ Misc:
  - GBA Config: Add "override" layer for better one-time configuration
  - SDL: Allow GBASDLAudio to be used without a thread context
  - All: Improved PowerPC support
+ - All: Add --version flag
 
 0.3.0: (2015-08-16)
 Features:

src/platform/commandline.c

@@ -47,6 +47,7 @@ static const struct option _options[] = {
 	{ "help",      no_argument, 0, 'h' },
 	{ "movie",     required_argument, 0, 'v' },
 	{ "patch",     required_argument, 0, 'p' },
+	{ "version",   no_argument, 0, '\0' },
 	{ 0, 0, 0, 0 }
 };
 
@@ -68,8 +69,17 @@ bool parseArguments(struct GBAArguments* opts, struct GBAConfig* config, int arg
 		// TODO: modularize options to subparsers
 		strncat(options, subparser->extraOptions, sizeof(options) - strlen(options) - 1);
 	}
-	while ((ch = getopt_long(argc, argv, options, _options, 0)) != -1) {
+	int index = 0;
+	while ((ch = getopt_long(argc, argv, options, _options, &index)) != -1) {
+		const struct option* opt = &_options[index];
 		switch (ch) {
+		case '\0':
+			if (strcmp(opt->name, "version") == 0) {
+				opts->showVersion = true;
+			} else {
+				return false;
+			}
+			break;
 		case 'b':
 			GBAConfigSetOverrideValue(config, "bios", optarg);
 			break;
@@ -122,7 +132,7 @@ bool parseArguments(struct GBAArguments* opts, struct GBAConfig* config, int arg
 	argc -= optind;
 	argv += optind;
 	if (argc != 1) {
-		return opts->showHelp;
+		return opts->showHelp || opts->showVersion;
 	}
 	opts->fname = strdup(argv[0]);
 	return true;
@@ -228,7 +238,12 @@ void usage(const char* arg0, const char* extraOptions) {
 	puts("  -v, --movie FILE    Play back a movie of recorded input");
 	puts("  -p, --patch FILE    Apply a specified patch file when running");
 	puts("  -s, --frameskip N   Skip every N frames");
+	puts("  --version           Print version and exit");
 	if (extraOptions) {
 		puts(extraOptions);
 	}
 }
+
+void version(const char* arg0) {
+	printf("%s %s (%s)\n", arg0, projectVersion, gitCommit);
+}

src/platform/commandline.h

@@ -31,6 +31,7 @@ struct GBAArguments {
 	enum DebuggerType debuggerType;
 	bool debugAtStart;
 	bool showHelp;
+	bool showVersion;
 };
 
 struct SubParser {
@@ -52,6 +53,7 @@ bool parseArguments(struct GBAArguments* opts, struct GBAConfig* config, int arg
 void freeArguments(struct GBAArguments* opts);
 
 void usage(const char* arg0, const char* extraOptions);
+void version(const char* arg0);
 
 void initParserForGraphics(struct SubParser* parser, struct GraphicsOpts* opts);
 struct ARMDebugger* createDebugger(struct GBAArguments* opts, struct GBAThread* context);

src/platform/sdl/main.c

@@ -67,6 +67,13 @@ int main(int argc, char** argv) {
 		GBAConfigDeinit(&config);
 		return !parsed;
 	}
+	if (args.showVersion) {
+		version(argv[0]);
+		freeArguments(&args);
+		GBAConfigFreeOpts(&opts);
+		GBAConfigDeinit(&config);
+		return 0;
+	}
 
 	GBAConfigMap(&config, &opts);
 

src/platform/test/fuzz-main.c

@@ -67,6 +67,13 @@ int main(int argc, char** argv) {
 		GBAContextDeinit(&context);
 		return !parsed;
 	}
+	if (args.showVersion) {
+		version(argv[0]);
+		freeArguments(&args);
+		GBAConfigFreeOpts(&opts);
+		GBAConfigDeinit(&config);
+		return 0;
+	}
 
 	struct GBAVideoSoftwareRenderer renderer;
 	renderer.outputBuffer = 0;

src/platform/test/perf-main.c

@@ -77,6 +77,13 @@ int main(int argc, char** argv) {
 		GBAConfigDeinit(&config);
 		return !parsed;
 	}
+	if (args.showVersion) {
+		version(argv[0]);
+		freeArguments(&args);
+		GBAConfigFreeOpts(&opts);
+		GBAConfigDeinit(&config);
+		return 0;
+	}
 
 	renderer.outputBuffer = malloc(256 * 256 * 4);
 	renderer.outputBufferStride = 256;