X-Git-Url: https://git.mdrn.pl/redakcja.git/blobdiff_plain/5913c54d19b8f6775633176032161d49f9b2f1aa..fc8d58d4ac9abba24758ef6c914eea9f85ef7e5b:/src/catalogue/ebook_utils.py

diff --git a/src/catalogue/ebook_utils.py b/src/catalogue/ebook_utils.py
index dae2e769..f9bd6d37 100644
--- a/src/catalogue/ebook_utils.py
+++ b/src/catalogue/ebook_utils.py
@@ -1,5 +1,7 @@
-# -*- coding: utf-8 -*-
-from StringIO import StringIO
+# This file is part of FNP-Redakcja, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+#
+from io import BytesIO
 from catalogue.models import Book
 from librarian import DocProvider
 from django.http import HttpResponse
@@ -12,7 +14,7 @@ class RedakcjaDocProvider(DocProvider):
         self.publishable = publishable
 
     def by_slug(self, slug):
-        return StringIO(Book.objects.get(dc_slug=slug
+        return BytesIO(Book.objects.get(dc_slug=slug
                     ).materialize(publishable=self.publishable
                     ).encode('utf-8'))
 
@@ -26,7 +28,7 @@ def serve_file(file_path, name, mime_type):
 
     response = HttpResponse(content_type=mime_type)
     response['Content-Disposition'] = 'attachment; filename=%s' % name
-    with open(file_path) as f:
+    with open(file_path, 'rb') as f:
         for chunk in read_chunks(f):
             response.write(chunk)
     return response