Drop lots of legacy code. Support Python 3.7-3.11.

[librarian.git] / src / librarian / functions.py

diff --git a/src/librarian/functions.py b/src/librarian/functions.py
index 15e931c..bcaa784 100644 (file)
--- a/src/librarian/functions.py
+++ b/src/librarian/functions.py
@@ -1,12 +1,9 @@
-# -*- coding: utf-8 -*-
-#
 # This file is part of Librarian, licensed under GNU Affero GPLv3 or later.
-# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+# Copyright © Fundacja Wolne Lektury. See NOTICE for more information.
 #
-from __future__ import unicode_literals
-
 from lxml import etree
 import re
+from ebooklib import epub
 
 from librarian.dcparser import Person
 from librarian import get_resource
@@ -20,11 +17,11 @@ def _register_function(f):
 
 def reg_substitute_entities():
     entity_substitutions = [
-        (u'---', u'—'),
-        (u'--', u'–'),
-        (u'...', u'…'),
-        (u',,', u'„'),
-        (u'"', u'”'),
+        ('---', '—'),
+        ('--', '–'),
+        ('...', '…'),
+        (',,', '„'),
+        ('"', '”'),
     ]
 
     def substitute_entities(context, text):
@@ -130,7 +127,7 @@ def mathml_latex(context, trees):
     from librarian.embeds.mathml import MathML
     text = MathML(trees[0]).to_latex().data
     # Remove invisible multiplications, they produce unwanted spaces.
-    text = text.replace(u'\u2062', '')
+    text = text.replace('\u2062', '')
     return text
 
 
@@ -138,14 +135,22 @@ def reg_mathml_latex():
     _register_function(mathml_latex)
 
 
-def reg_mathml_epub(zipf):
+def reg_mathml_epub(output):
     from librarian.embeds.mathml import MathML
 
     def mathml(context, trees):
         data = MathML(trees[0]).to_latex().to_png().data
         name = "math%d.png" % mathml.count
         mathml.count += 1
-        zipf.writestr('OPS/' + name, data)
+        output.add_item(
+            epub.EpubItem(
+                uid='math%d' % mathml.count,
+                file_name=name,
+                media_type='image/png',
+                content=data
+            )
+        )
+
         return name
     mathml.count = 0
     _register_function(mathml)