use cas

[audio.git] / apps / archive / utils.py

diff --git a/apps/archive/utils.py b/apps/archive/utils.py
index 4710c20..3e89a8b 100755 (executable)
--- a/apps/archive/utils.py
+++ b/apps/archive/utils.py
@@ -1,5 +1,10 @@
+from hashlib import sha1
+import os
+import os.path
+from django.core.files.storage import FileSystemStorage
 from django.core.files.uploadedfile import UploadedFile
 
+
 class ExistingFile(UploadedFile):
 
     def __init__(self, path, *args, **kwargs):
@@ -11,3 +16,29 @@ class ExistingFile(UploadedFile):
 
     def close(self):
         pass
+
+
+class OverwriteStorage(FileSystemStorage):
+
+    def _save(self, name, content):
+        if self.exists(name):
+            self.delete(name)
+        return super(OverwriteStorage, self)._save(name, content)
+
+    def get_available_name(self, name):
+        return name
+
+
+def sha1_file(f):
+    sha = sha1()
+    for piece in iter(lambda: f.read(1024*1024), ''):
+        sha.update(piece)
+    return sha.hexdigest()
+
+
+def all_files(root_path):
+    root_len = len(root_path)
+    for path, dirs, files in os.walk(root_path):
+       for fname in files:
+           yield os.path.join(path, fname)[root_len:].lstrip('/')
+