From 9477dac5582d46daecc5d5ceb8c1ef37a7f3a006 Mon Sep 17 00:00:00 2001
From: Stefan Krulj <powertomato@higgs.lan>
Date: Mon, 12 Mar 2012 18:34:26 +0100
Subject: [PATCH] Initial pylog latex commit

---
 pylog_latex.py | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 pylog_latex.py

diff --git a/pylog_latex.py b/pylog_latex.py
new file mode 100644
index 0000000..e539d58
--- /dev/null
+++ b/pylog_latex.py
@@ -0,0 +1,80 @@
+#!/usr/bin/python
+import os,sys,re
+
+import urllib, cgi
+
+import cgitb
+cgitb.enable()
+form = cgi.FieldStorage()
+
+# blacklist taken from wp-latex:
+# http://wordpress.org/extend/plugins/wp-latex/
+blacklist=['^^',\
+    'afterassignment',\
+    'aftergroup',\
+    'batchmode',\
+    'catcode',\
+    'closein',\
+    'closeout',\
+    'command',\
+    'csname',\
+    'document',\
+    'def',\
+    'errhelp',\
+    'errcontextlines',\
+    'errorstopmode',\
+    'every',\
+    'expandafter',\
+    'immediate',\
+    'include',\
+    'input',\
+    'jobname',\
+    'loop',\
+    'lowercase',\
+    'makeat',\
+    'meaning',\
+    'message',\
+    'name',\
+    'newhelp',\
+    'noexpand',\
+    'nonstopmode',\
+    'open',\
+    'output',\
+    'pagestyle',\
+    'package',\
+    'pathname',\
+    'read',\
+    'relax',\
+    'repeat',\
+    'shipout',\
+    'show',\
+    'scrollmode',\
+    'special',\
+    'syscall',\
+    'toks',\
+    'tracing',\
+    'typeout',\
+    'typein',\
+    'uppercase',\
+    'write']
+
+sys.stdout.write('Content-type: image/png\n\n')
+badtex()
+latex = "$$p_n=\\frac{\\pi}{n^2}$$"
+
+def badtex():
+    f=open('_img/badtex.png','rb')
+    sys.stdout.write(f.read())
+    f.close()
+    sys.exit(0)
+
+for word in blacklist:
+    if word in latex:
+        badtex()
+        
+if re.search("/(^|[^\\\\])\$/",latex):
+    badtex()
+    sys.exit(0)
+    
+
+