perf improvement

CMakeLists.txt

@@ -78,7 +78,8 @@ target_link_libraries(stgen3 PRIVATE ${CMAKE_SOURCE_DIR}/itexToMML/itex-src/libi
 target_link_libraries(stgen3 PRIVATE ${CMAKE_SOURCE_DIR}/lib/mtex2MML/build/libmtex2MML.a)
 target_link_libraries(stgen3 PRIVATE tinyxml2)
 target_link_libraries(stgen3 PRIVATE lexbor )
-target_link_libraries(stgen3 PRIVATE source-highlight)
+target_link_libraries(stgen3 PRIVATE ${CMAKE_SOURCE_DIR}/lib/src-highlite/build/b/lib/libsource-highlight.a)
+target_link_libraries(stgen3 PRIVATE boost_regex)
 target_link_libraries(stgen3 PRIVATE
     ${CMAKE_SOURCE_DIR}/lib/lasem/src/.libs/liblasem-0.6.so ${GLIB_LIBRARIES} m
     pthread /usr/lib64/libgobject-2.0.so.0 /usr/lib64/libcairo.so.2)

main.cpp

@@ -215,7 +215,7 @@ class Imtex {
                 lsm_dom_document_save_to_memory (doc, &tbuffer, &size, NULL);
 
                 std::string mathml {tbuffer, tbuffer + size};
-                spdlog::info("Mathml: {}", mathml);
+//                spdlog::info("Mathml: {}", mathml);
 
                 g_free (tbuffer);
 
@@ -1104,8 +1104,9 @@ class builder {
 
                 e.second.properties.erase("body");
 
+                std::optional<const std::unordered_map<fs::path, blog_item, pathHash>> non {compile_jobs};
                 s2_templr->run_substitution_plugins(page, 
-                        e.second.properties, compile_jobs);
+                        e.second.properties, non);
 
                 e.second.properties["body"] = page;
             }

templater.hpp

@@ -1,4 +1,5 @@
 
+// ./stgen3 src dest  7.98s user 0.32s system 102% cpu 8.123 total
 #include <map>
 #include <ranges>
 #include <stack>
@@ -834,6 +835,7 @@ class templater {
 
     std::unordered_map<std::string, substitution_plugin *> substitution_commands {};
     std::unordered_map<std::string, s2_substitution_plugin *> s2_substitution_commands {};
+    const std::optional<const std::unordered_map<fs::path, blog_item, pathHash>> NO_PAGES {};
 
     public:
 
@@ -872,7 +874,7 @@ class templater {
     do_substitution(int start, int end, const std::string &invocation, 
             std::string &file_text, 
             const std::unordered_map<std::string, std::string> &properties,
-            std::optional<const std::unordered_map<fs::path, blog_item, pathHash>> pages) 
+            const std::optional<const std::unordered_map<fs::path, blog_item, pathHash>> &pages) 
     {
 
         std::string command_name = invocation.substr(0, invocation.find(":"));
@@ -903,19 +905,19 @@ class templater {
     run_substitution_plugins(std::string &text, 
             const std::unordered_map<std::string, std::string> &properties) 
     {
-        run_substitution_plugins(text, properties, {}, true);
+        run_substitution_plugins(text, properties, NO_PAGES, true);
     }
 
     void 
     run_substitution_plugins_once(std::string &text, 
             const std::unordered_map<std::string, std::string> &properties) 
     {
-        run_substitution_plugins(text, properties, {}, false);
+        run_substitution_plugins(text, properties, NO_PAGES, false);
     }
 
     void 
     run_substitution_plugins(std::string &text, 
-            const std::unordered_map<std::string, std::string> &properties, std::optional<const std::unordered_map<fs::path, blog_item, pathHash>> pages) {
+            const std::unordered_map<std::string, std::string> &properties, const std::optional<const std::unordered_map<fs::path, blog_item, pathHash>> &pages) {
         run_substitution_plugins(text, properties,pages,true); 
     } 
 
@@ -923,7 +925,7 @@ class templater {
 
     void 
     run_substitution_plugins(std::string &text, 
-             const std::unordered_map<std::string, std::string> &properties, std::optional<const std::unordered_map<fs::path, blog_item, pathHash>> pages, bool allow_recursion) 
+             const std::unordered_map<std::string, std::string> &properties, const std::optional<const std::unordered_map<fs::path, blog_item, pathHash>> &pages, bool allow_recursion) 
      {
         std::string::size_type next = text.find(TEMPLATE_CODE_START, 0);