Add support for Windows using "mbcs" as the default Unicode encoding when dealing with the file system. As discussed on python-dev and in patch 410465.

Lib/ntpath.py

@@ -404,21 +404,12 @@ def normpath(path):
 # Return an absolute path.
 def abspath(path):
     """Return the absolute version of a path"""
-    try:
-        import win32api
-    except ImportError:
-        global abspath
-        def _abspath(path):
-            if not isabs(path):
-                path = join(os.getcwd(), path)
-            return normpath(path)
-        abspath = _abspath
-        return _abspath(path)
     if path: # Empty path must return current working directory.
+        from nt import _getfullpathname
         try:
-            path = win32api.GetFullPathName(path)
-        except win32api.error:
-            pass # Bad path - return unchanged.
+            path = _getfullpathname(path)
+        except WindowsError:
+                pass # Bad path - return unchanged.
     else:
         path = os.getcwd()
     return normpath(path)

Lib/test/output/test_unicode_file

@@ -0,0 +1,2 @@
+test_unicode_file
+All the Unicode tests appeared to work

Lib/test/test_support.py

@@ -63,6 +63,10 @@ def fcmp(x, y): # fuzzy comparison function
     TESTFN = '$test'
 elif os.name != 'riscos':
     TESTFN = '@test'
+    # Unicode name only used if TEST_FN_ENCODING exists for the platform.
+    TESTFN_UNICODE=u"@test-\xe0\xf2" # 2 latin characters.
+    if os.name=="nt":
+        TESTFN_ENCODING="mbcs"
 else:
     TESTFN = 'test'
 del os

Lib/test/test_unicode_file.py

@@ -0,0 +1,81 @@
+# Test some Unicode file name semantics
+# We dont test many operations on files other than
+# that their names can be used with Unicode characters.
+import os
+
+from test_support import verify, TestSkipped, TESTFN_UNICODE
+try:
+    from test_support import TESTFN_ENCODING
+except ImportError:
+    raise TestSkipped("No Unicode filesystem semantics on this platform.")
+
+TESTFN_ENCODED = TESTFN_UNICODE.encode(TESTFN_ENCODING)
+
+# Check with creation as Unicode string.
+f = open(TESTFN_UNICODE, 'wb')
+if not os.path.isfile(TESTFN_UNICODE):
+    print "File doesn't exist after creating it"
+
+if not os.path.isfile(TESTFN_ENCODED):
+    print "File doesn't exist (encoded string) after creating it"
+
+f.close()
+
+# Test stat and chmod
+if os.stat(TESTFN_ENCODED) != os.stat(TESTFN_UNICODE):
+    print "os.stat() did not agree on the 2 filenames"
+os.chmod(TESTFN_ENCODED, 0777)
+os.chmod(TESTFN_UNICODE, 0777)
+
+# Test rename
+os.rename(TESTFN_ENCODED, TESTFN_ENCODED + ".new")
+os.rename(TESTFN_UNICODE+".new", TESTFN_ENCODED)
+
+os.unlink(TESTFN_ENCODED)
+if os.path.isfile(TESTFN_ENCODED) or \
+   os.path.isfile(TESTFN_UNICODE):
+    print "File exists after deleting it"
+
+# Check with creation as encoded string.
+f = open(TESTFN_ENCODED, 'wb')
+if not os.path.isfile(TESTFN_UNICODE) or \
+   not os.path.isfile(TESTFN_ENCODED):
+    print "File doesn't exist after creating it"
+
+path, base = os.path.split(os.path.abspath(TESTFN_ENCODED))
+if base not in os.listdir(path):
+    print "Filename did not appear in os.listdir()"
+
+f.close()
+os.unlink(TESTFN_UNICODE)
+if os.path.isfile(TESTFN_ENCODED) or \
+   os.path.isfile(TESTFN_UNICODE):
+    print "File exists after deleting it"
+
+# test os.open
+f = os.open(TESTFN_ENCODED, os.O_CREAT)
+if not os.path.isfile(TESTFN_UNICODE) or \
+   not os.path.isfile(TESTFN_ENCODED):
+    print "File doesn't exist after creating it"
+os.close(f)
+os.unlink(TESTFN_UNICODE)
+
+# Test directories etc
+cwd = os.getcwd()
+abs_encoded = os.path.abspath(TESTFN_ENCODED) + ".dir"
+abs_unicode = os.path.abspath(TESTFN_UNICODE) + ".dir"
+os.mkdir(abs_encoded)
+try:
+    os.chdir(abs_encoded)
+    os.chdir(abs_unicode)
+finally:
+    os.chdir(cwd)
+    os.rmdir(abs_unicode)
+os.mkdir(abs_unicode)
+try:
+    os.chdir(abs_encoded)
+    os.chdir(abs_unicode)
+finally:
+    os.chdir(cwd)
+    os.rmdir(abs_encoded)
+print "All the Unicode tests appeared to work"