X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/04cb9d727764da3c0d3ba30783ba25dc828e3899..120d1af7c84eba0f9b31315bfcf7c9a0dc544269:/apps/catalogue/utils.py

diff --git a/apps/catalogue/utils.py b/apps/catalogue/utils.py
index 72b097392..02e5b6d93 100644
--- a/apps/catalogue/utils.py
+++ b/apps/catalogue/utils.py
@@ -1,11 +1,17 @@
 # -*- coding: utf-8 -*-
+# This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+#
 import random
 import time
 from base64 import urlsafe_b64encode
 
+from django.core.files.uploadedfile import UploadedFile
 from django.utils.hashcompat import sha_constructor
 from django.conf import settings
 
+from librarian import DocProvider
+
 
 # Use the system (hardware-based) random number generator if it exists.
 if hasattr(random, 'SystemRandom'):
@@ -16,7 +22,7 @@ MAX_SESSION_KEY = 18446744073709551616L     # 2 << 63
 
 
 def get_random_hash(seed):
-    sha_digest = sha_constructor('%s%s%s%s' % 
+    sha_digest = sha_constructor('%s%s%s%s' %
         (randrange(0, MAX_SESSION_KEY), time.time(), unicode(seed).encode('utf-8', 'replace'),
         settings.SECRET_KEY)).digest()
     return urlsafe_b64encode(sha_digest).replace('=', '').replace('_', '-').lower()
@@ -28,3 +34,28 @@ def split_tags(tags):
         result.setdefault(tag.category, []).append(tag)
     return result
 
+
+class ExistingFile(UploadedFile):
+
+    def __init__(self, path, *args, **kwargs):
+        self.path = path
+        return super(ExistingFile, self).__init__(*args, **kwargs)
+
+    def temporary_file_path(self):
+        return self.path
+
+    def close(self):
+        pass
+
+
+class BookImportDocProvider(DocProvider):
+    """ used for joined EPUBs """
+
+    def __init__(self, book):
+        self.book = book
+        
+    def by_slug(self, slug):
+        if slug == self.book.slug:
+            return self.book.xml_file
+        else:
+            return Book.objects.get(slug=slug).xml_file