From cf5755f6a26e55285e95d382385b23f7fc729cd4 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 3 May 2016 10:20:29 +0530
Subject: [PATCH] Use a forked MathJax, makes it easier to maintain the patch

---
 setup/mathjax.py              | 61 +++++++++++++----------------------
 src/pyj/read_book/mathjax.pyj |  2 ++
 2 files changed, 24 insertions(+), 39 deletions(-)

diff --git a/setup/mathjax.py b/setup/mathjax.py
index 1d939acdda..f3783f107d 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, re
+import os
 from urllib import urlretrieve
 from zipfile import ZipFile, ZIP_STORED, ZipInfo
 from hashlib import sha1
@@ -19,38 +19,22 @@ from setup import Command
 class MathJax(Command):
 
     description = 'Create the MathJax bundle'
-    MATH_JAX_VERSION = '2.6.1'
-    MATH_JAX_URL = 'https://github.com/mathjax/MathJax/archive/%s.zip' % MATH_JAX_VERSION
+    MATH_JAX_URL = 'https://github.com/kovidgoyal/MathJax/archive/master.zip'
     FONT_FAMILY = 'TeX'
 
     def add_options(self, parser):
         parser.add_option('--path-to-mathjax', help='Path to the MathJax source code')
 
-    def download_mathjax_release(self):
-        from calibre.ptempfile import TemporaryDirectory
+    def download_mathjax_release(self, tdir):
         self.info('Downloading MathJax:', self.MATH_JAX_URL)
         filename = urlretrieve(self.MATH_JAX_URL)[0]
-        with ZipFile(filename) as zf, TemporaryDirectory() as tdir:
+        with ZipFile(filename) as zf:
             zf.extractall(tdir)
-            for d in os.listdir(tdir):
-                q = os.path.join(tdir, d)
-                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')
+            return os.path.join(tdir, 'MathJax-master')
 
     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
@@ -67,23 +51,22 @@ class MathJax(Command):
         return '/fonts/' in name and self.FONT_FAMILY not in name
 
     def run(self, opts):
-        self.patched = False
+        from calibre.ptempfile import TemporaryDirectory
         self.h = sha1()
-        src = opts.path_to_mathjax or self.download_mathjax_release()
-        self.info('Compressing MathJax...')
-        from calibre.ptempfile import SpooledTemporaryFile
-        t = SpooledTemporaryFile()
-        with ZipFile(t, 'w', ZIP_STORED) as zf:
-            self.add_file(zf, self.j(src, 'unpacked', 'MathJax.js'), 'MathJax.js')
-            self.add_tree(zf, self.j(src, 'fonts', 'HTML-CSS', self.FONT_FAMILY, 'woff'), 'fonts/HTML-CSS/%s/woff' % self.FONT_FAMILY)
-            for d in 'extensions jax/element jax/input jax/output/CommonHTML'.split():
-                self.add_tree(zf, self.j(src, 'unpacked', *d.split('/')), d)
+        with TemporaryDirectory() as tdir:
+            src = opts.path_to_mathjax or self.download_mathjax_release(tdir)
+            self.info('Compressing MathJax...')
+            from calibre.ptempfile import SpooledTemporaryFile
+            t = SpooledTemporaryFile()
+            with ZipFile(t, 'w', ZIP_STORED) as zf:
+                self.add_file(zf, self.j(src, 'unpacked', 'MathJax.js'), 'MathJax.js')
+                self.add_tree(zf, self.j(src, 'fonts', 'HTML-CSS', self.FONT_FAMILY, 'woff'), 'fonts/HTML-CSS/%s/woff' % self.FONT_FAMILY)
+                for d in 'extensions jax/element jax/input jax/output/CommonHTML'.split():
+                    self.add_tree(zf, self.j(src, 'unpacked', *d.split('/')), d)
 
-            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:
-            f.write(zf.comment)
+                zf.comment = self.h.hexdigest()
+            t.seek(0)
+            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:
+                f.write(zf.comment)
diff --git a/src/pyj/read_book/mathjax.pyj b/src/pyj/read_book/mathjax.pyj
index ed68fd45d5..b5726bf504 100644
--- a/src/pyj/read_book/mathjax.pyj
+++ b/src/pyj/read_book/mathjax.pyj
@@ -23,6 +23,8 @@ def monkeypatch(mathjax_files):
             return name
         ans = get_url(mathjax_files, name)
         if ans is name and not name.startswith('blob:'):
+            if ans.endswith('.eot') or ans.endswith('.otf'):
+                return ''
             print('WARNING: Failed to resolve MathJax file:', name)
         return ans
     window.MathJax.Ajax.fileURL = file_url