chore: add build log for zcg

src/ZoneCodeGeneratorLib/Generating/CodeGenerator.cpp

@@ -11,6 +11,7 @@
 
 #include <filesystem>
 #include <format>
+#include <fstream>
 
 namespace fs = std::filesystem;
 
@@ -176,7 +177,22 @@ bool CodeGenerator::GenerateCode(const IDataRepository* repository)
         }
     }
     const auto end = std::chrono::steady_clock::now();
-    con::debug("Generating code took {}ms", std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count());
+    const auto timeInMs = std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count();
+    con::debug("Generating code took {}ms", timeInMs);
+
+    if (!m_args->m_build_log_file.empty())
+    {
+        std::ofstream buildLogFile(m_args->m_build_log_file);
+        if (buildLogFile.is_open())
+        {
+            buildLogFile << "Generating code took " << timeInMs << "ms\n";
+            buildLogFile.close();
+        }
+        else
+        {
+            con::error("Failed to open build log file");
+        }
+    }
 
     return true;
 }

src/ZoneCodeGeneratorLib/ZoneCodeGenerator.cpp

@@ -49,7 +49,7 @@ public:
     }
 
 private:
-    bool ReadHeaderData()
+    [[nodiscard]] bool ReadHeaderData() const
     {
         for (const auto& headerFile : m_args.m_header_paths)
         {
@@ -62,7 +62,7 @@ private:
         return true;
     }
 
-    bool ReadCommandsData()
+    [[nodiscard]] bool ReadCommandsData() const
     {
         for (const auto& commandsFile : m_args.m_command_paths)
         {

src/ZoneCodeGeneratorLib/ZoneCodeGeneratorArguments.cpp

@@ -85,6 +85,13 @@ const CommandLineOption* const OPTION_GENERATE =
     .WithParameter("preset")
     .Reusable()
     .Build();
+
+const CommandLineOption* const OPTION_BUILD_LOG =
+    CommandLineOption::Builder::Create()
+    .WithLongName("build-log")
+    .WithDescription("Specify a file to write a build log to.")
+    .WithParameter("logFilePath")
+    .Build();
 // clang-format on
 
 const CommandLineOption* const COMMAND_LINE_OPTIONS[]{
@@ -97,6 +104,7 @@ const CommandLineOption* const COMMAND_LINE_OPTIONS[]{
     OPTION_OUTPUT_FOLDER,
     OPTION_PRINT,
     OPTION_GENERATE,
+    OPTION_BUILD_LOG,
 };
 
 namespace
@@ -170,6 +178,10 @@ bool ZoneCodeGeneratorArguments::ParseArgs(const int argc, const char** argv, bo
     else
         m_output_directory = ".";
 
+    // --build-log
+    if (m_argument_parser.IsOptionSpecified(OPTION_BUILD_LOG))
+        m_build_log_file = m_argument_parser.GetValueForOption(OPTION_BUILD_LOG);
+
     // -h; --header
     if (m_argument_parser.IsOptionSpecified(OPTION_HEADER))
     {

src/ZoneCodeGeneratorLib/ZoneCodeGeneratorArguments.h

@@ -18,6 +18,10 @@ public:
     std::vector<std::string> m_command_paths;
     std::string m_output_directory;
 
+    // Generate a build log that is always written for the compiler to determine
+    // the last output time.
+    std::string m_build_log_file;
+
     std::vector<std::string> m_template_names;
 
 private: