Part of the fix for bug #410541: add ensure_relative() function
diff --git a/Lib/distutils/dir_util.py b/Lib/distutils/dir_util.py
index ca9fa9d..bd1ea0f 100644
--- a/Lib/distutils/dir_util.py
+++ b/Lib/distutils/dir_util.py
@@ -6,7 +6,7 @@
__revision__ = "$Id$"
-import os
+import os, sys
from types import *
from distutils.errors import DistutilsFileError, DistutilsInternalError
from distutils import log
@@ -212,3 +212,17 @@
except (IOError, OSError), exc:
log.warn(grok_environment_error(
exc, "error removing %s: " % directory))
+
+
+def ensure_relative (path):
+ """Take the full path 'path', and make it a relative path so
+ it can be the second argument to os.path.join().
+ """
+ drive, path = os.path.splitdrive(path)
+ if sys.platform == 'mac':
+ return os.sep + path
+ else:
+ if path[0:1] == os.sep:
+ path = drive + path[1:]
+ return path
+