Add try/except to Blahtex XML parsing.

1 files changed, 11 insertions, 7 deletions

diff --git a/server.py b/server.py
index a8759ba..163ef54 100755
--- a/server.py
+++ b/server.py
@@ -158,13 +158,17 @@ class WPMathRenderer:
             return ""
 
         # Ugly!  There is certainly a better way to do this, but my DOM skills are weak, and this works.
-        dom = xml.dom.minidom.parseString(mathml)
-        dom = dom.getElementsByTagName('blahtex')[0]
-        dom = dom.getElementsByTagName('mathml')[0]
-        dom = dom.getElementsByTagName('markup')[0]
-        mathml = dom.toxml()
-        mathml = mathml.replace('markup', 'math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"')
-        dom.unlink()
+        try:
+            dom = xml.dom.minidom.parseString(mathml)
+            dom = dom.getElementsByTagName('blahtex')[0]
+            dom = dom.getElementsByTagName('mathml')[0]
+            dom = dom.getElementsByTagName('markup')[0]
+            mathml = dom.toxml()
+            mathml = mathml.replace('markup', 'math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"')
+            dom.unlink()
+        except:
+            print "BLAHTEX XML PARSING FAILED: '%s'" % mathml
+            return ""
 
         # Straight embedding.  Requires parent document to be XHTML.
         return mathml