1 files changed, 11 insertions, 76 deletions
diff --git a/Lib/posixpath.py b/Lib/posixpath.py
index 9eac6bc..1521236 100644
--- a/Lib/posixpath.py
+++ b/Lib/posixpath.py
@@ -12,6 +12,7 @@ for manipulation of the pathname component of URLs.
 
 import os
 import stat
+from genericpath import *
 
 __all__ = ["normcase","isabs","join","splitdrive","split","splitext",
            "basename","dirname","commonprefix","getsize","getmtime",
@@ -105,50 +106,24 @@ def splitdrive(p):
     return '', p
 
 
-# Return the tail (basename) part of a path.
+# Return the tail (basename) part of a path, same as split(path)[1].
 
 def basename(p):
     """Returns the final component of a pathname"""
-    return split(p)[1]
+    i = p.rfind('/') + 1
+    return p[i:]
 
 
-# Return the head (dirname) part of a path.
+# Return the head (dirname) part of a path, same as split(path)[0].
 
 def dirname(p):
     """Returns the directory component of a pathname"""
-    return split(p)[0]
-
-
-# Return the longest prefix of all list elements.
-
-def commonprefix(m):
-    "Given a list of pathnames, returns the longest common leading component"
-    if not m: return ''
-    s1 = min(m)
-    s2 = max(m)
-    n = min(len(s1), len(s2))
-    for i in xrange(n):
-        if s1[i] != s2[i]:
-            return s1[:i]
-    return s1[:n]
-
-# Get size, mtime, atime of files.
-
-def getsize(filename):
-    """Return the size of a file, reported by os.stat()."""
-    return os.stat(filename).st_size
-
-def getmtime(filename):
-    """Return the last modification time of a file, reported by os.stat()."""
-    return os.stat(filename).st_mtime
-
-def getatime(filename):
-    """Return the last access time of a file, reported by os.stat()."""
-    return os.stat(filename).st_atime
+    i = p.rfind('/') + 1
+    head = p[:i]
+    if head and head != '/'*len(head):
+        head = head.rstrip('/')
+    return head
 
-def getctime(filename):
-    """Return the metadata change time of a file, reported by os.stat()."""
-    return os.stat(filename).st_ctime
 
 # Is a path a symbolic link?
 # This will always return false on systems where os.lstat doesn't exist.
@@ -161,19 +136,6 @@ def islink(path):
         return False
     return stat.S_ISLNK(st.st_mode)
 
-
-# Does a path exist?
-# This is false for dangling symbolic links.
-
-def exists(path):
-    """Test whether a path exists.  Returns False for broken symbolic links"""
-    try:
-        st = os.stat(path)
-    except os.error:
-        return False
-    return True
-
-
 # Being true for dangling symbolic links is also useful.
 
 def lexists(path):
@@ -185,32 +147,6 @@ def lexists(path):
     return True
 
 
-# Is a path a directory?
-# This follows symbolic links, so both islink() and isdir() can be true
-# for the same path.
-
-def isdir(path):
-    """Test whether a path is a directory"""
-    try:
-        st = os.stat(path)
-    except os.error:
-        return False
-    return stat.S_ISDIR(st.st_mode)
-
-
-# Is a path a regular file?
-# This follows symbolic links, so both islink() and isfile() can be true
-# for the same path.
-
-def isfile(path):
-    """Test whether a path is a regular file"""
-    try:
-        st = os.stat(path)
-    except os.error:
-        return False
-    return stat.S_ISREG(st.st_mode)
-
-
 # Are two filenames really pointing to the same file?
 
 def samefile(f1, f2):
@@ -328,8 +264,7 @@ def expanduser(path):
         except KeyError:
             return path
         userhome = pwent.pw_dir
-    if userhome.endswith('/'):
-        i += 1
+    userhome = userhome.rstrip('/')
     return userhome + path[i:]