Added diagram metadata to PlantUML and JSON generators

src/config/config.cc

@@ -116,6 +116,7 @@ void inheritable_diagram_options::inherit(
     combine_free_functions_into_file_participants.override(
         combine_free_functions_into_file_participants);
     debug_mode.override(parent.debug_mode);
+    generate_metadata.override(parent.generate_metadata);
 }
 
 std::string inheritable_diagram_options::simplify_template_type(

src/config/config.h

@@ -170,6 +170,7 @@ struct inheritable_diagram_options {
         "combine_free_functions_into_file_participants", false};
     option<std::vector<std::string>> participants_order{"participants_order"};
     option<bool> debug_mode{"debug_mode", false};
+    option<bool> generate_metadata{"generate_metadata", true};
 
     void inherit(const inheritable_diagram_options &parent);
 
@@ -292,7 +293,8 @@ YAML::Emitter &operator<<(YAML::Emitter &out, const option<T> &o)
 }
 
 config load(const std::string &config_file,
-    std::optional<bool> paths_relative_to_pwd = {});
+    std::optional<bool> paths_relative_to_pwd = {},
+    std::optional<bool> no_metadata = {});
 
 config load_plain(const std::string &config_file);
 } // namespace config

src/config/yaml_decoders.cc

@@ -381,6 +381,7 @@ template <typename T> bool decode_diagram(const Node &node, T &rhs)
     get_option(node, rhs.type_aliases);
     get_option(node, rhs.comment_parser);
     get_option(node, rhs.debug_mode);
+    get_option(node, rhs.generate_metadata);
 
     return true;
 }
@@ -595,6 +596,7 @@ template <> struct convert<config> {
         get_option(node, rhs.generate_system_headers);
         get_option(node, rhs.git);
         get_option(node, rhs.debug_mode);
+        get_option(node, rhs.generate_metadata);
         rhs.base_directory.set(node["__parent_path"].as<std::string>());
         get_option(node, rhs.relative_to);
 
@@ -676,8 +678,8 @@ void resolve_option_path(YAML::Node &doc, const std::string &option)
 }
 } // namespace
 
-config load(
-    const std::string &config_file, std::optional<bool> paths_relative_to_pwd)
+config load(const std::string &config_file,
+    std::optional<bool> paths_relative_to_pwd, std::optional<bool> no_metadata)
 {
     try {
         YAML::Node doc;
@@ -727,6 +729,10 @@ config load(
                 doc["relative_to"] = std::filesystem::current_path().string();
         }
 
+        if (no_metadata.has_value()) {
+            doc["generate_metadata"] = !no_metadata.value();
+        }
+
         //
         // Resolve common path-like config options relative to `relative_to`
         //