feat: add version command line arg to all executables

src/Linker/Linker.cpp

@@ -613,9 +613,13 @@ public:
 
     bool Start(const int argc, const char** argv) override
     {
-        if (!m_args.ParseArgs(argc, argv))
+        auto shouldContinue = true;
+        if (!m_args.ParseArgs(argc, argv, shouldContinue))
             return false;
 
+        if (!shouldContinue)
+            return true;
+
         if (!m_search_paths.BuildProjectIndependentSearchPaths())
             return false;
 

src/Linker/LinkerArgs.cpp

@@ -1,11 +1,13 @@
 #include "LinkerArgs.h"
 
+#include "GitVersion.h"
 #include "ObjLoading.h"
 #include "ObjWriting.h"
 #include "Utils/Arguments/UsageInformation.h"
 #include "Utils/FileUtils.h"
 
 #include <filesystem>
+#include <iostream>
 #include <regex>
 #include <type_traits>
 
@@ -19,6 +21,12 @@ 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")
@@ -88,6 +96,7 @@ const CommandLineOption* const OPTION_MENU_NO_OPTIMIZATION =
 
 const CommandLineOption* const COMMAND_LINE_OPTIONS[]{
     OPTION_HELP,
+    OPTION_VERSION,
     OPTION_VERBOSE,
     OPTION_BASE_FOLDER,
     OPTION_OUTPUT_FOLDER,
@@ -100,7 +109,7 @@ const CommandLineOption* const COMMAND_LINE_OPTIONS[]{
 };
 
 LinkerArgs::LinkerArgs()
-    : m_argument_parser(COMMAND_LINE_OPTIONS, std::extent<decltype(COMMAND_LINE_OPTIONS)>::value),
+    : m_argument_parser(COMMAND_LINE_OPTIONS, std::extent_v<decltype(COMMAND_LINE_OPTIONS)>),
       m_base_pattern(R"(\?base\?)"),
       m_game_pattern(R"(\?game\?)"),
       m_project_pattern(R"(\?project\?)"),
@@ -125,6 +134,11 @@ void LinkerArgs::PrintUsage()
     usage.Print();
 }
 
+void LinkerArgs::PrintVersion()
+{
+    std::cout << "OpenAssetTools Linker " << std::string(GIT_VERSION) << "\n";
+}
+
 void LinkerArgs::SetVerbose(const bool isVerbose)
 {
     m_verbose = isVerbose;
@@ -198,8 +212,9 @@ std::set<std::string> LinkerArgs::GetSearchPathsForProject(const std::set<std::s
     return out;
 }
 
-bool LinkerArgs::ParseArgs(const int argc, const char** argv)
+bool LinkerArgs::ParseArgs(const int argc, const char** argv, bool& shouldContinue)
 {
+    shouldContinue = true;
     if (!m_argument_parser.ParseArguments(argc - 1, &argv[1]))
     {
         PrintUsage();
@@ -213,6 +228,14 @@ bool LinkerArgs::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_project_specifiers_to_build = m_argument_parser.GetArguments();
     if (m_project_specifiers_to_build.empty())
     {

src/Linker/LinkerArgs.h

@@ -31,6 +31,7 @@ private:
      * \brief Prints a command line usage help text for the Linker tool to stdout.
      */
     static void PrintUsage();
+    static void PrintVersion();
 
     void SetVerbose(bool isVerbose);
 
@@ -56,7 +57,7 @@ public:
     bool m_verbose;
 
     LinkerArgs();
-    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 project.