1 files changed, 13 insertions, 3 deletions
diff --git a/Tools/Scripts/webkitpy/common/system/filesystem.py b/Tools/Scripts/webkitpy/common/system/filesystem.py
index 05513a9..b876807 100644
--- a/Tools/Scripts/webkitpy/common/system/filesystem.py
+++ b/Tools/Scripts/webkitpy/common/system/filesystem.py
@@ -39,13 +39,20 @@ import shutil
 import tempfile
 import time
 
+from webkitpy.common.system import ospath
+
 class FileSystem(object):
     """FileSystem interface for webkitpy.
 
     Unless otherwise noted, all paths are allowed to be either absolute
     or relative."""
     def __init__(self):
-        self.sep = os.sep
+        self._sep = os.sep
+
+    def _get_sep(self):
+        return self._sep
+
+    sep = property(_get_sep, doc="pathname separator")
 
     def abspath(self, path):
         return os.path.abspath(path)
@@ -165,8 +172,8 @@ class FileSystem(object):
             if e.errno != errno.EEXIST:
                 raise
 
-    def move(self, src, dest):
-        shutil.move(src, dest)
+    def move(self, source, destination):
+        shutil.move(source, destination)
 
     def mtime(self, path):
         return os.stat(path).st_mtime
@@ -200,6 +207,9 @@ class FileSystem(object):
         with codecs.open(path, 'r', 'utf8') as f:
             return f.read()
 
+    def relpath(self, path, start='.'):
+        return ospath.relpath(path, start)
+
     class _WindowsError(exceptions.OSError):
         """Fake exception for Linux and Mac."""
         pass