From a38f6ef2095cd689b0eb652dcef6beb04971c33c Mon Sep 17 00:00:00 2001
From: Timotej Lazar <timotej.lazar@fri.uni-lj.si>
Date: Fri, 9 Sep 2016 11:20:32 +0200
Subject: Support LaTeX math notation in templates

---
 js/codeq/template.js | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'js/codeq/template.js')

diff --git a/js/codeq/template.js b/js/codeq/template.js
index 85f1596..ec8b080 100644
--- a/js/codeq/template.js
+++ b/js/codeq/template.js
@@ -98,6 +98,19 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. */
         }
     };
 
+    // convert latex math notation to MathML
+    var renderMath = function (str) {
+        // inline math delimited by \( \)
+        str = str.replace(/\\\((.*?)\\\)/g, function (match, expression) {
+            return katex.renderToString(expression);
+        });
+        // display math delimited by \[ \]
+        str = str.replace(/\\\[(.*?)\\\]/g, function (match, expression) {
+            return katex.renderToString(expression, {'displayMode': true});
+        });
+        return str;
+    };
+
     // instantiate template with args
     var process = function (template, templatePath, args) {
         var templateName,
@@ -157,7 +170,8 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. */
         // add any remaining text
         output += template.substr(end == -1 ? start : end);
 
-        return output;
+        // render latex formulas
+        return renderMath(output);
     };
 
     codeq.template = {
-- 
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