add a revert button to return scan gallery to first page for this book

[redakcja.git] / apps / compress / versioning / hash / __init__.py

diff --git a/apps/compress/versioning/hash/__init__.py b/apps/compress/versioning/hash/__init__.py
index 74721fe..a298961 100644 (file)
--- a/apps/compress/versioning/hash/__init__.py
+++ b/apps/compress/versioning/hash/__init__.py
@@ -6,30 +6,32 @@ from compress.conf import settings
 from compress.utils import concat, get_output_filename
 from compress.versioning.base import VersioningBase
 
+
 class HashVersioningBase(VersioningBase):
+
     def __init__(self, hash_method):
         self.hash_method = hash_method
-    
+
     def needs_update(self, output_file, source_files, version):
         output_file_name = get_output_filename(output_file, version)
         ph = settings.COMPRESS_VERSION_PLACEHOLDER
         of = output_file
         try:
             phi = of.index(ph)
-            old_version = output_file_name[phi:phi+len(ph)-len(of)]
+            old_version = output_file_name[phi:phi + len(ph) - len(of)]
             return (version != old_version), version
         except ValueError:
             # no placeholder found, do not update, manual update if needed
             return False, version
-            
+
     def get_version(self, source_files):
         buf = concat(source_files)
         s = cStringIO.StringIO(buf)
         version = self.get_hash(s)
         s.close()
-        return version            
-            
-    def get_hash(self, f, CHUNK=2**16):
+        return version
+
+    def get_hash(self, f, CHUNK=2 ** 16):
         m = self.hash_method()
         while 1:
             chunk = f.read(CHUNK)
@@ -38,10 +40,14 @@ class HashVersioningBase(VersioningBase):
             m.update(chunk)
         return m.hexdigest()
 
+
 class MD5Versioning(HashVersioningBase):
+
     def __init__(self):
         super(MD5Versioning, self).__init__(md5)
 
+
 class SHA1Versioning(HashVersioningBase):
+
     def __init__(self):
-        super(SHA1Versioning, self).__init__(sha1)
\ No newline at end of file
+        super(SHA1Versioning, self).__init__(sha1)