proof of concept mtex/lasem tex-svg compilation

CMakeLists.txt

@@ -54,11 +54,12 @@ endif()
 
 link_directories(${GLIB_LIBRARY_DIRS})
 
-ADD_EXECUTABLE(stgen3  util.cpp darkhttpd.c duktape/src/duktape.c markdown.cpp main.cpp)
+ADD_EXECUTABLE(stgen3  util.cpp darkhttpd.c duktape/src/duktape.c markdown.cpp
+    main.cpp lib/cpp-base64/base64.cpp)
 
 
-target_include_directories(stgen3 PRIVATE include duktape/src itexToMML/itex-src
-    lib/lasem/src )
+target_include_directories(stgen3 PRIVATE include duktape/src lib/mtex2MML/src itexToMML/itex-src
+    lib/lasem/src lib/cpp-base64)
 
 # Horrible Horrible headers for lasem
 target_include_directories(stgen3 PRIVATE ${GLIB_INCLUDE_DIRS} /usr/include/cairo /usr/include/gdk-pixbuf-2.0 /usr/include/pango-1.0 /usr/include/harfbuzz/)
@@ -74,6 +75,7 @@ add_definitions(${GLIB_CFLAGS_OTHER})
 
 target_link_libraries(stgen3 PRIVATE ${CMAKE_SOURCE_DIR}/MultiMarkdown/build/libMultiMarkdown.a)
 target_link_libraries(stgen3 PRIVATE ${CMAKE_SOURCE_DIR}/itexToMML/itex-src/libitex2MML.a)
+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)

main.cpp

@@ -21,6 +21,8 @@
 #include <thread>
 #include <queue>
 
+#include <base64.h>
+
 extern "C" {
 /*
  * https://gitlab.gnome.org/GNOME/lasem/-/tree/master/
@@ -64,6 +66,7 @@ They are provided by the lyx-fonts package in fedora, and the ttf-lyx package in
 #include "srchighlight.hpp"
 
 #include "itex2MML.h"
+#include "mtex2MML.h"
 
 namespace lex {
 extern "C" {
@@ -190,34 +193,31 @@ class Imtex {
 
     }
 
-        std::string get_svg_from_itex(const std::string& itex) {
-             auto doc = 
-                 LSM_DOM_DOCUMENT(lsm_mathml_document_new_from_itex (itex.c_str(), itex.size(), NULL));
+        std::string get_svg_from_mtex(const std::string& itex) {
+
+             char *mml = mtex2MML_parse(itex.c_str(), itex.size(), 0);
 
-             if (doc == NULL)  {
+             if (!mml) {
                  spdlog::error("Failed to parse itex {}", itex) ;
                  return itex;
              }
+             
 
-/*            if (!_hide_before_object (doc, option_element_id)) {
-                g_object_unref (doc);
-                spdlog::error("Invalid document?");
-                return itex;
-            }
-            */
-
+            //auto doc = LSM_DOM_DOCUMENT(mml);
 
-            char *tbuffer;
-            gsize size;
+	        auto doc = lsm_dom_document_new_from_memory (mml, -1, NULL);
 
-            lsm_dom_document_save_to_memory (doc, &tbuffer, &size, NULL);
+            mtex2MML_free_string(mml);
 
-            std::string mathml {tbuffer, tbuffer + size};
-            spdlog::info("Mathml: {}", mathml);
+                char *tbuffer;
+                gsize size;
 
+                lsm_dom_document_save_to_memory (doc, &tbuffer, &size, NULL);
 
-            g_free (tbuffer);
+                std::string mathml {tbuffer, tbuffer + size};
+                spdlog::info("Mathml: {}", mathml);
 
+                g_free (tbuffer);
 
             auto view = lsm_dom_document_create_view (doc);
             lsm_dom_view_set_resolution (view, option_ppi);
@@ -229,7 +229,6 @@ class Imtex {
             //auto surface = cairo_svg_surface_create (output_filename,
 			//					    width_pt, height_pt);
 
-
            std::string bufer {};
            cairo_surface_t * surface = cairo_svg_surface_create_for_stream(cairo_stream_to_buffer_func, (void *)&bufer, width_pt, height_pt);
 
@@ -292,7 +291,7 @@ const std::string TEST_PORT = "8000";
 
 static volatile bool continue_running = true;
 
-const std::string short_info("stgen3 prerelease from git.topsot.net (c) 2020-2021 Alistair Michael.");
+const std::string short_info("stgen3 prerelease from git.topost.net (c) 2020-2021 Alistair Michael.");
 
 using json = nlohmann::json;
 namespace fs = std::filesystem;
@@ -557,17 +556,20 @@ class builder {
             const std::string tt {(const char *)text, (const char *)text + len};
 
 #ifdef katex_support
-            std::string mathtext = dukengine.eval_katex(tt);
+            std::string mtext = dukengine.eval_katex(tt);
 #endif
 
             // ok itex only understands display math?
-            std::string mathtext = imtx.get_svg_from_itex("$$" + tt.substr(2, tt.size() - 4) + "$$");
+            std::string mtext = imtx.get_svg_from_mtex("$$" + tt.substr(2, tt.size() - 4) + "$$");
 
             const unsigned char local_name[] = "math";
 
+            auto mathtext = "<img src='data:image/svg+xml;base64, " + base64_encode_mime(mtext) + "'/>";
+
             lxb_html_element_t * ele = lxb_html_document_create_element(document, local_name, 
                     (size_t)4, nullptr);
 
+
              auto elem = lxb_dom_interface_element(ele);
 
             lxb_dom_node_t *n = lxb_html_document_parse_fragment(document,