Fixed #9610 -- Fixed duplicate uploaded file name mangling when directory contained a dot and file didn't. Based on patches from fadlytabrani and adurdin.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10701 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/core/files/storage.py

@@ -63,15 +63,15 @@ class Storage(object):
         Returns a filename that's free on the target storage system, and
         available for new content to be written to.
         """
-        # If the filename already exists, keep adding an underscore to the name
-        # of the file until the filename doesn't exist.
+        dir_name, file_name = os.path.split(name)
+        file_root, file_ext = os.path.splitext(file_name)
+        # If the filename already exists, keep adding an underscore (before the
+        # file extension, if one exists) to the filename until the generated
+        # filename doesn't exist.
         while self.exists(name):
-            try:
-                dot_index = name.rindex('.')
-            except ValueError: # filename has no dot
-                name += '_'
-            else:
-                name = name[:dot_index] + '_' + name[dot_index:]
+            file_root += '_'
+            # file_ext includes the dot.
+            name = os.path.join(dir_name, file_root + file_ext)
         return name
 
     def path(self, name):

tests/regressiontests/file_storage/tests.py

@@ -89,6 +89,7 @@ u'custom_storage.2'
 import os
 import time
 import shutil
+import sys
 import tempfile
 from unittest import TestCase
 from django.conf import settings
@@ -141,3 +142,41 @@ class FileStoragePermissions(TestCase):
         actual_mode = os.stat(self.storage.path(name))[0] & 0777
         self.assertEqual(actual_mode, 0666)
 
+
+class FileStoragePathParsing(TestCase):
+    def setUp(self):
+        self.storage_dir = tempfile.mkdtemp()
+        self.storage = FileSystemStorage(self.storage_dir)
+
+    def tearDown(self):
+        shutil.rmtree(self.storage_dir)
+
+    def test_directory_with_dot(self):
+        """Regression test for #9610.
+
+        If the directory name contains a dot and the file name doesn't, make
+        sure we still mangle the file name instead of the directory name.
+        """
+
+        self.storage.save('dotted.path/test', ContentFile("1"))
+        self.storage.save('dotted.path/test', ContentFile("2"))
+
+        self.assertFalse(os.path.exists(os.path.join(self.storage_dir, 'dotted_.path')))
+        self.assertTrue(os.path.exists(os.path.join(self.storage_dir, 'dotted.path/test')))
+        self.assertTrue(os.path.exists(os.path.join(self.storage_dir, 'dotted.path/test_')))
+
+    def test_first_character_dot(self):
+        """
+        File names with a dot as their first character don't have an extension,
+        and the underscore should get added to the end.
+        """
+        self.storage.save('dotted.path/.test', ContentFile("1"))
+        self.storage.save('dotted.path/.test', ContentFile("2"))
+
+        self.assertTrue(os.path.exists(os.path.join(self.storage_dir, 'dotted.path/.test')))
+        # Before 2.6, a leading dot was treated as an extension, and so
+        # underscore gets added to beginning instead of end.
+        if sys.version_info < (2, 6):
+            self.assertTrue(os.path.exists(os.path.join(self.storage_dir, 'dotted.path/_.test')))
+        else:
+            self.assertTrue(os.path.exists(os.path.join(self.storage_dir, 'dotted.path/.test_')))