From 514a8a28638b6a187e840b03f21c9e3b8b76d4d1 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 3 May 2016 08:30:30 +0530
Subject: [PATCH] Patch MathJax so that correct webfont URLs are generated

---
 setup/mathjax.py | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/setup/mathjax.py b/setup/mathjax.py
index bbdcc07818..1d939acdda 100644
--- a/setup/mathjax.py
+++ b/setup/mathjax.py
@@ -7,7 +7,7 @@ __license__   = 'GPL v3'
 __copyright__ = '2012, Kovid Goyal <kovid at kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
-import os
+import os, re
 from urllib import urlretrieve
 from zipfile import ZipFile, ZIP_STORED, ZipInfo
 from hashlib import sha1
@@ -37,9 +37,20 @@ class MathJax(Command):
                 if os.path.isdir(q):
                     return q
 
+    def patch_webfonts(self, raw):
+        raw = raw.decode('utf-8')
+        nraw = re.sub(r'font = {[^}]+WOFFDIR[^}]+}',
+        '''font = {'font-family':family+'w', src:'url(' + AJAX.fileURL(WOFFDIR+'/'+name+'-'+variant+'.woff') + ') format("woff")'}''', raw)
+        if raw == nraw:
+            raise SystemExit('Patching of webfonts failed')
+        return nraw.encode('utf-8')
+
     def add_file(self, zf, path, name):
         with open(path, 'rb') as f:
             raw = f.read()
+        if name == 'jax/output/CommonHTML/fonts/TeX/fontdata.js':
+            raw = self.patch_webfonts(raw)
+            self.patched = True
         self.h.update(raw)
         zi = ZipInfo(name)
         zi.external_attr = 0o444 << 16L
@@ -56,6 +67,7 @@ class MathJax(Command):
         return '/fonts/' in name and self.FONT_FAMILY not in name
 
     def run(self, opts):
+        self.patched = False
         self.h = sha1()
         src = opts.path_to_mathjax or self.download_mathjax_release()
         self.info('Compressing MathJax...')
@@ -69,6 +81,8 @@ class MathJax(Command):
 
             zf.comment = self.h.hexdigest()
         t.seek(0)
+        if not self.patched:
+            raise SystemExit('Could not find fontdata.js to patch')
         with open(self.j(self.RESOURCES, 'content-server', 'mathjax.zip.xz'), 'wb') as f:
             compress(t, f, level=9)
         with open(self.j(self.RESOURCES, 'content-server', 'mathjax.version'), 'wb') as f: