feat: add version command line arg to all executables

src/Unlinker/Unlinker.cpp

@@ -429,9 +429,13 @@ public:
      */
     bool Start(const int argc, const char** argv)
     {
-        if (!m_args.ParseArgs(argc, argv))
+        auto shouldContinue = true;
+        if (!m_args.ParseArgs(argc, argv, shouldContinue))
             return false;
 
+        if (!shouldContinue)
+            return true;
+
         if (!BuildSearchPaths())
             return false;
 

src/Unlinker/UnlinkerArgs.cpp

@@ -1,10 +1,12 @@
 #include "UnlinkerArgs.h"
 
+#include "GitVersion.h"
 #include "ObjLoading.h"
 #include "ObjWriting.h"
 #include "Utils/Arguments/UsageInformation.h"
 #include "Utils/FileUtils.h"
 
+#include <iostream>
 #include <regex>
 #include <type_traits>
 
@@ -16,6 +18,12 @@ const CommandLineOption* const OPTION_HELP =
     .WithDescription("Displays usage information.")
     .Build();
 
+const CommandLineOption* const OPTION_VERSION =
+    CommandLineOption::Builder::Create()
+    .WithLongName("version")
+    .WithDescription("Prints the application version.")
+    .Build();
+
 const CommandLineOption* const OPTION_VERBOSE =
     CommandLineOption::Builder::Create()
     .WithShortName("v")
@@ -113,6 +121,7 @@ const CommandLineOption* const OPTION_LEGACY_MENUS =
 
 const CommandLineOption* const COMMAND_LINE_OPTIONS[]{
     OPTION_HELP,
+    OPTION_VERSION,
     OPTION_VERBOSE,
     OPTION_MINIMAL_ZONE_FILE,
     OPTION_LOAD,
@@ -155,6 +164,11 @@ void UnlinkerArgs::PrintUsage()
     usage.Print();
 }
 
+void UnlinkerArgs::PrintVersion()
+{
+    std::cout << "OpenAssetTools Unlinker " << std::string(GIT_VERSION) << "\n";
+}
+
 void UnlinkerArgs::SetVerbose(const bool isVerbose)
 {
     m_verbose = isVerbose;
@@ -237,8 +251,9 @@ void UnlinkerArgs::ParseCommaSeparatedAssetTypeString(const std::string& input)
         AddSpecifiedAssetType(std::string(lowerInput, currentPos, lowerInput.size() - currentPos));
 }
 
-bool UnlinkerArgs::ParseArgs(const int argc, const char** argv)
+bool UnlinkerArgs::ParseArgs(const int argc, const char** argv, bool& shouldContinue)
 {
+    shouldContinue = true;
     if (!m_argument_parser.ParseArguments(argc - 1, &argv[1]))
     {
         PrintUsage();
@@ -252,6 +267,14 @@ bool UnlinkerArgs::ParseArgs(const int argc, const char** argv)
         return false;
     }
 
+    // Check if the user wants to see the version
+    if (m_argument_parser.IsOptionSpecified(OPTION_VERSION))
+    {
+        PrintVersion();
+        shouldContinue = false;
+        return true;
+    }
+
     m_zones_to_unlink = m_argument_parser.GetArguments();
     const size_t zoneCount = m_zones_to_unlink.size();
     if (zoneCount < 1)

src/Unlinker/UnlinkerArgs.h

@@ -21,6 +21,7 @@ private:
      * \brief Prints a command line usage help text for the Unlinker tool to stdout.
      */
     static void PrintUsage();
+    static void PrintVersion();
 
     void SetVerbose(bool isVerbose);
     bool SetImageDumpingMode();
@@ -60,7 +61,7 @@ public:
     bool m_verbose;
 
     UnlinkerArgs();
-    bool ParseArgs(int argc, const char** argv);
+    bool ParseArgs(int argc, const char** argv, bool& shouldContinue);
 
     /**
      * \brief Converts the output path specified by command line arguments to a path applies for the specified zone.