hooks.rb in jekyll-geolexica-1.9.2

- old
+ new

@@ -9,10 +9,11 @@
       def register_all_hooks
         hook :after_init, :site, :initialize_glossary
         hook :post_read, :site, :load_glossary
         hook :pre_render, :documents, :expose_glossary
         hook :pre_render, :pages, :expose_glossary
+        hook :post_render, :pages, :convert_math
       end
 
       # Adds Jekyll::Site#glossary method, and initializes an empty glossary.
       def initialize_glossary(site)
         site.class.attr_reader :glossary
@@ -24,9 +25,29 @@
         site.glossary.load_glossary
       end
 
       def expose_glossary(page_or_document, liquid_drop)
         liquid_drop["glossary"] = page_or_document.site.glossary
+      end
+
+      def convert_math(page)
+        page.output.gsub!(/stem:\[([^\]]*?)\]/) do
+          ascii_equation = CGI.unescapeHTML(Regexp.last_match[1])
+
+          mathml_equation = ::Plurimath::Math
+                              .parse(ascii_equation, :asciimath)
+                              .to_mathml
+
+          # temporary hack to use display inline for math equations because
+          # currently there is no option to use display inline in plurimath
+          mathml_equation.gsub!("display=\"block\"", "display=\"inline\"")
+
+          # Removing newlines(\n) and escaping double quotes(")
+          # because they will cause parsing issues in json
+          mathml_equation.gsub!("\n", "").gsub!("\"", "\\\"") unless page.html?
+
+          mathml_equation
+        end
       end
 
       def hook event, target, action
         Jekyll::Hooks.register target, event, &method(action)
       end