[Python-checkins] r85717 - python/branches/release27-maint/Lib/ntpath.py
hirokazu.yamamoto
python-checkins at python.org
Tue Oct 19 03:23:56 CEST 2010
Author: hirokazu.yamamoto
Date: Tue Oct 19 03:23:51 2010
New Revision: 85717
Log:
Issue #5117: My previous commit for this issue broke posix buildbot.
Modified:
python/branches/release27-maint/Lib/ntpath.py
Modified: python/branches/release27-maint/Lib/ntpath.py
==============================================================================
--- python/branches/release27-maint/Lib/ntpath.py (original)
+++ python/branches/release27-maint/Lib/ntpath.py Tue Oct 19 03:23:51 2010
@@ -483,27 +483,38 @@
supports_unicode_filenames = (hasattr(sys, "getwindowsversion") and
sys.getwindowsversion()[3] >= 2)
+def _abspath_split(path):
+ abs = abspath(normpath(path))
+ prefix, rest = splitunc(abs)
+ is_unc = bool(prefix)
+ if not is_unc:
+ prefix, rest = splitdrive(abs)
+ return is_unc, prefix, [x for x in rest.split(sep) if x]
+
def relpath(path, start=curdir):
"""Return a relative version of a path"""
if not path:
raise ValueError("no path specified")
- start_list = [x for x in abspath(start).split(sep) if x]
- path_list = [x for x in abspath(path).split(sep) if x]
- if start_list[0].lower() != path_list[0].lower():
- unc_path, rest = splitunc(path)
- unc_start, rest = splitunc(start)
- if bool(unc_path) ^ bool(unc_start):
- raise ValueError("Cannot mix UNC and non-UNC paths (%s and %s)"
- % (path, start))
+
+ start_is_unc, start_prefix, start_list = _abspath_split(start)
+ path_is_unc, path_prefix, path_list = _abspath_split(path)
+
+ if path_is_unc ^ start_is_unc:
+ raise ValueError("Cannot mix UNC and non-UNC paths (%s and %s)"
+ % (path, start))
+ if path_prefix.lower() != start_prefix.lower():
+ if path_is_unc:
+ raise ValueError("path is on UNC root %s, start on UNC root %s"
+ % (path_prefix, start_prefix))
else:
raise ValueError("path is on drive %s, start on drive %s"
- % (path_list[0], start_list[0]))
+ % (path_prefix, start_prefix))
# Work out how much of the filepath is shared by start and path.
- for i in range(min(len(start_list), len(path_list))):
- if start_list[i].lower() != path_list[i].lower():
+ i = 0
+ for e1, e2 in zip(start_list, path_list):
+ if e1.lower() != e2.lower():
break
- else:
i += 1
rel_list = [pardir] * (len(start_list)-i) + path_list[i:]
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