- Move functions common to all path modules into genericpath.py and have the
OS speicifc path modules import them. - Have os2emxpath import common functions fron ntpath instead of using copies
This commit is contained in:
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4582d7d905
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@ -0,0 +1,78 @@
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"""
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Path operations common to more than one OS
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Do not use directly. The OS specific modules import the appropriate
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functions from this module themselves.
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"""
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import os
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import stat
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__all__ = ['commonprefix', 'exists', 'getatime', 'getctime', 'getmtime',
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'getsize', 'isdir', 'isfile']
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# Does a path exist?
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# This is false for dangling symbolic links on systems that support them.
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def exists(path):
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"""Test whether a path exists. Returns False for broken symbolic links"""
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try:
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st = os.stat(path)
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except os.error:
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return False
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return True
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# This follows symbolic links, so both islink() and isdir() can be true
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# for the same path ono systems that support symlinks
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def isfile(path):
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"""Test whether a path is a regular file"""
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try:
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st = os.stat(path)
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except os.error:
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return False
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return stat.S_ISREG(st.st_mode)
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# Is a path a directory?
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# This follows symbolic links, so both islink() and isdir()
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# can be true for the same path on systems that support symlinks
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def isdir(s):
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"""Return true if the pathname refers to an existing directory."""
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try:
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st = os.stat(s)
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except os.error:
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return False
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return stat.S_ISDIR(st.st_mode)
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def getsize(filename):
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"""Return the size of a file, reported by os.stat()."""
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return os.stat(filename).st_size
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def getmtime(filename):
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"""Return the last modification time of a file, reported by os.stat()."""
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return os.stat(filename).st_mtime
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def getatime(filename):
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"""Return the last access time of a file, reported by os.stat()."""
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return os.stat(filename).st_atime
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def getctime(filename):
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"""Return the metadata change time of a file, reported by os.stat()."""
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return os.stat(filename).st_ctime
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# Return the longest prefix of all list elements.
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def commonprefix(m):
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"Given a list of pathnames, returns the longest common leading component"
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if not m: return ''
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s1 = min(m)
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s2 = max(m)
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n = min(len(s1), len(s2))
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for i in xrange(n):
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if s1[i] != s2[i]:
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return s1[:i]
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return s1[:n]
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@ -2,6 +2,7 @@
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import os
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from stat import *
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from genericpath import *
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__all__ = ["normcase","isabs","join","splitdrive","split","splitext",
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"basename","dirname","commonprefix","getsize","getmtime",
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@ -101,31 +102,6 @@ def ismount(s):
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components = split(s)
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return len(components) == 2 and components[1] == ''
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def isdir(s):
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"""Return true if the pathname refers to an existing directory."""
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try:
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st = os.stat(s)
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except os.error:
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return 0
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return S_ISDIR(st.st_mode)
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# Get size, mtime, atime of files.
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def getsize(filename):
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"""Return the size of a file, reported by os.stat()."""
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return os.stat(filename).st_size
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def getmtime(filename):
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"""Return the last modification time of a file, reported by os.stat()."""
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return os.stat(filename).st_mtime
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def getatime(filename):
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"""Return the last access time of a file, reported by os.stat()."""
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return os.stat(filename).st_atime
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def islink(s):
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"""Return true if the pathname refers to a symbolic link."""
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except:
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return False
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def isfile(s):
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"""Return true if the pathname refers to an existing regular file."""
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try:
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st = os.stat(s)
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except os.error:
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return False
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return S_ISREG(st.st_mode)
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def getctime(filename):
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"""Return the creation time of a file, reported by os.stat()."""
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return os.stat(filename).st_ctime
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def exists(s):
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"""Test whether a path exists. Returns False for broken symbolic links"""
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try:
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st = os.stat(s)
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except os.error:
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return False
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return True
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# Is `stat`/`lstat` a meaningful difference on the Mac? This is safe in any
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# case.
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return False
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return True
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# Return the longest prefix of all list elements.
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def commonprefix(m):
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"Given a list of pathnames, returns the longest common leading component"
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if not m: return ''
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s1 = min(m)
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s2 = max(m)
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n = min(len(s1), len(s2))
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for i in xrange(n):
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if s1[i] != s2[i]:
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return s1[:i]
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return s1[:n]
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def expandvars(path):
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"""Dummy to retain interface-compatibility with other operating systems."""
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return path
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@ -8,6 +8,7 @@ module as os.path.
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import os
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import stat
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import sys
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from genericpath import *
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__all__ = ["normcase","isabs","join","splitdrive","split","splitext",
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"basename","dirname","commonprefix","getsize","getmtime",
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"""Returns the directory component of a pathname"""
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return split(p)[0]
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# Return the longest prefix of all list elements.
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def commonprefix(m):
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"Given a list of pathnames, returns the longest common leading component"
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if not m: return ''
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s1 = min(m)
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s2 = max(m)
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n = min(len(s1), len(s2))
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for i in xrange(n):
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if s1[i] != s2[i]:
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return s1[:i]
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return s1[:n]
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# Get size, mtime, atime of files.
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def getsize(filename):
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"""Return the size of a file, reported by os.stat()"""
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return os.stat(filename).st_size
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def getmtime(filename):
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"""Return the last modification time of a file, reported by os.stat()"""
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return os.stat(filename).st_mtime
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def getatime(filename):
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"""Return the last access time of a file, reported by os.stat()"""
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return os.stat(filename).st_atime
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def getctime(filename):
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"""Return the creation time of a file, reported by os.stat()."""
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return os.stat(filename).st_ctime
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# Is a path a symbolic link?
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# This will always return false on systems where posix.lstat doesn't exist.
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def islink(path):
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"""Test for symbolic link. On WindowsNT/95 always returns false"""
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"""Test for symbolic link.
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On WindowsNT/95 and OS/2 always returns false
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"""
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return False
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# Does a path exist?
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def exists(path):
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"""Test whether a path exists"""
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try:
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st = os.stat(path)
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except os.error:
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return False
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return True
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# alias exists to lexists
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lexists = exists
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# Is a path a dos directory?
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# This follows symbolic links, so both islink() and isdir() can be true
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# for the same path.
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def isdir(path):
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"""Test whether a path is a directory"""
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try:
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st = os.stat(path)
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except os.error:
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return False
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return stat.S_ISDIR(st.st_mode)
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# Is a path a regular file?
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# This follows symbolic links, so both islink() and isdir() can be true
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# for the same path.
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def isfile(path):
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"""Test whether a path is a regular file"""
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try:
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st = os.stat(path)
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except os.error:
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return False
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return stat.S_ISREG(st.st_mode)
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# Is a path a mount point? Either a root (with or without drive letter)
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# or an UNC path with at most a / or \ after the mount point.
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@ -7,6 +7,9 @@ module as os.path.
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import os
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import stat
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from genericpath import *
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from ntpath import (expanduser, expandvars, isabs, islink, splitdrive,
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splitext, split, walk)
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__all__ = ["normcase","isabs","join","splitdrive","split","splitext",
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"basename","dirname","commonprefix","getsize","getmtime",
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return s.replace('\\', '/').lower()
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# Return whether a path is absolute.
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# Trivial in Posix, harder on the Mac or MS-DOS.
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# For DOS it is absolute if it starts with a slash or backslash (current
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# volume), or if a pathname after the volume letter and colon / UNC resource
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# starts with a slash or backslash.
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def isabs(s):
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"""Test whether a path is absolute"""
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s = splitdrive(s)[1]
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return s != '' and s[:1] in '/\\'
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# Join two (or more) paths.
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def join(a, *p):
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return path
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# Split a path in a drive specification (a drive letter followed by a
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# colon) and the path specification.
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# It is always true that drivespec + pathspec == p
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def splitdrive(p):
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"""Split a pathname into drive and path specifiers. Returns a 2-tuple
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"(drive,path)"; either part may be empty"""
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if p[1:2] == ':':
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return p[0:2], p[2:]
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return '', p
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# Parse UNC paths
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def splitunc(p):
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"""Split a pathname into UNC mount point and relative path specifiers.
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return '', p
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# Split a path in head (everything up to the last '/') and tail (the
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# rest). After the trailing '/' is stripped, the invariant
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# join(head, tail) == p holds.
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# The resulting head won't end in '/' unless it is the root.
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def split(p):
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"""Split a pathname.
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Return tuple (head, tail) where tail is everything after the final slash.
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Either part may be empty."""
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d, p = splitdrive(p)
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# set i to index beyond p's last slash
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i = len(p)
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while i and p[i-1] not in '/\\':
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i = i - 1
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head, tail = p[:i], p[i:] # now tail has no slashes
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# remove trailing slashes from head, unless it's all slashes
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head2 = head
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while head2 and head2[-1] in '/\\':
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head2 = head2[:-1]
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head = head2 or head
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return d + head, tail
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# Split a path in root and extension.
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# The extension is everything starting at the last dot in the last
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# pathname component; the root is everything before that.
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# It is always true that root + ext == p.
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def splitext(p):
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"""Split the extension from a pathname.
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Extension is everything from the last dot to the end.
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Return (root, ext), either part may be empty."""
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root, ext = '', ''
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for c in p:
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if c in ['/','\\']:
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root, ext = root + ext + c, ''
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elif c == '.':
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if ext:
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root, ext = root + ext, c
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else:
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ext = c
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elif ext:
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ext = ext + c
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else:
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root = root + c
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return root, ext
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# Return the tail (basename) part of a path.
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def basename(p):
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return split(p)[0]
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# Return the longest prefix of all list elements.
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def commonprefix(m):
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"Given a list of pathnames, returns the longest common leading component"
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if not m: return ''
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s1 = min(m)
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s2 = max(m)
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n = min(len(s1), len(s2))
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for i in xrange(n):
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if s1[i] != s2[i]:
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return s1[:i]
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return s1[:n]
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# Get size, mtime, atime of files.
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def getsize(filename):
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"""Return the size of a file, reported by os.stat()"""
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return os.stat(filename).st_size
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def getmtime(filename):
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"""Return the last modification time of a file, reported by os.stat()"""
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return os.stat(filename).st_mtime
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def getatime(filename):
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"""Return the last access time of a file, reported by os.stat()"""
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return os.stat(filename).st_atime
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def getctime(filename):
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"""Return the creation time of a file, reported by os.stat()."""
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return os.stat(filename).st_ctime
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# Is a path a symbolic link?
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# This will always return false on systems where posix.lstat doesn't exist.
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def islink(path):
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"""Test for symbolic link. On OS/2 always returns false"""
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return False
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# Does a path exist?
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# This is false for dangling symbolic links.
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def exists(path):
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"""Test whether a path exists"""
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try:
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st = os.stat(path)
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except os.error:
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return False
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return True
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# alias exists to lexists
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lexists = exists
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# Is a path a directory?
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def isdir(path):
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"""Test whether a path is a directory"""
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try:
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st = os.stat(path)
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except os.error:
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return False
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return stat.S_ISDIR(st.st_mode)
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# Is a path a regular file?
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# This follows symbolic links, so both islink() and isdir() can be true
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# for the same path.
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def isfile(path):
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"""Test whether a path is a regular file"""
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try:
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st = os.stat(path)
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except os.error:
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return False
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return stat.S_ISREG(st.st_mode)
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# Is a path a mount point? Either a root (with or without drive letter)
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# or an UNC path with at most a / or \ after the mount point.
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@ -258,131 +115,6 @@ def ismount(path):
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return len(p) == 1 and p[0] in '/\\'
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# Directory tree walk.
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# For each directory under top (including top itself, but excluding
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# '.' and '..'), func(arg, dirname, filenames) is called, where
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# dirname is the name of the directory and filenames is the list
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# of files (and subdirectories etc.) in the directory.
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# The func may modify the filenames list, to implement a filter,
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# or to impose a different order of visiting.
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def walk(top, func, arg):
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"""Directory tree walk whth callback function.
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walk(top, func, arg) calls func(arg, d, files) for each directory d
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in the tree rooted at top (including top itself); files is a list
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of all the files and subdirs in directory d."""
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try:
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names = os.listdir(top)
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except os.error:
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return
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func(arg, top, names)
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exceptions = ('.', '..')
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for name in names:
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if name not in exceptions:
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name = join(top, name)
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if isdir(name):
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walk(name, func, arg)
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# Expand paths beginning with '~' or '~user'.
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# '~' means $HOME; '~user' means that user's home directory.
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# If the path doesn't begin with '~', or if the user or $HOME is unknown,
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# the path is returned unchanged (leaving error reporting to whatever
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# function is called with the expanded path as argument).
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# See also module 'glob' for expansion of *, ? and [...] in pathnames.
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# (A function should also be defined to do full *sh-style environment
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# variable expansion.)
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def expanduser(path):
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"""Expand ~ and ~user constructs.
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If user or $HOME is unknown, do nothing."""
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if path[:1] != '~':
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return path
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i, n = 1, len(path)
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while i < n and path[i] not in '/\\':
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i = i + 1
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if i == 1:
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if 'HOME' in os.environ:
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userhome = os.environ['HOME']
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elif not 'HOMEPATH' in os.environ:
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return path
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else:
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try:
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drive = os.environ['HOMEDRIVE']
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except KeyError:
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drive = ''
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userhome = join(drive, os.environ['HOMEPATH'])
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else:
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||||
return path
|
||||
return userhome + path[i:]
|
||||
|
||||
|
||||
# Expand paths containing shell variable substitutions.
|
||||
# The following rules apply:
|
||||
# - no expansion within single quotes
|
||||
# - no escape character, except for '$$' which is translated into '$'
|
||||
# - ${varname} is accepted.
|
||||
# - varnames can be made out of letters, digits and the character '_'
|
||||
# XXX With COMMAND.COM you can use any characters in a variable name,
|
||||
# XXX except '^|<>='.
|
||||
|
||||
def expandvars(path):
|
||||
"""Expand shell variables of form $var and ${var}.
|
||||
|
||||
Unknown variables are left unchanged."""
|
||||
if '$' not in path:
|
||||
return path
|
||||
import string
|
||||
varchars = string.letters + string.digits + '_-'
|
||||
res = ''
|
||||
index = 0
|
||||
pathlen = len(path)
|
||||
while index < pathlen:
|
||||
c = path[index]
|
||||
if c == '\'': # no expansion within single quotes
|
||||
path = path[index + 1:]
|
||||
pathlen = len(path)
|
||||
try:
|
||||
index = path.index('\'')
|
||||
res = res + '\'' + path[:index + 1]
|
||||
except ValueError:
|
||||
res = res + path
|
||||
index = pathlen - 1
|
||||
elif c == '$': # variable or '$$'
|
||||
if path[index + 1:index + 2] == '$':
|
||||
res = res + c
|
||||
index = index + 1
|
||||
elif path[index + 1:index + 2] == '{':
|
||||
path = path[index+2:]
|
||||
pathlen = len(path)
|
||||
try:
|
||||
index = path.index('}')
|
||||
var = path[:index]
|
||||
if var in os.environ:
|
||||
res = res + os.environ[var]
|
||||
except ValueError:
|
||||
res = res + path
|
||||
index = pathlen - 1
|
||||
else:
|
||||
var = ''
|
||||
index = index + 1
|
||||
c = path[index:index + 1]
|
||||
while c != '' and c in varchars:
|
||||
var = var + c
|
||||
index = index + 1
|
||||
c = path[index:index + 1]
|
||||
if var in os.environ:
|
||||
res = res + os.environ[var]
|
||||
if c != '':
|
||||
res = res + c
|
||||
else:
|
||||
res = res + c
|
||||
index = index + 1
|
||||
return res
|
||||
|
||||
|
||||
# Normalize a path, e.g. A//B, A/./B and A/foo/../B all become A/B.
|
||||
|
||||
def normpath(path):
|
||||
|
|
|
@ -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",
|
||||
|
@ -119,37 +120,6 @@ def dirname(p):
|
|||
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
|
||||
|
||||
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 +131,6 @@ 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 +142,6 @@ 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):
|
||||
|
|
|
@ -0,0 +1,184 @@
|
|||
import unittest
|
||||
from test import test_support
|
||||
import os
|
||||
import genericpath
|
||||
|
||||
class AllCommonTest(unittest.TestCase):
|
||||
|
||||
def assertIs(self, a, b):
|
||||
self.assert_(a is b)
|
||||
|
||||
def test_commonprefix(self):
|
||||
self.assertEqual(
|
||||
genericpath.commonprefix([]),
|
||||
""
|
||||
)
|
||||
self.assertEqual(
|
||||
genericpath.commonprefix(["/home/swenson/spam", "/home/swen/spam"]),
|
||||
"/home/swen"
|
||||
)
|
||||
self.assertEqual(
|
||||
genericpath.commonprefix(["/home/swen/spam", "/home/swen/eggs"]),
|
||||
"/home/swen/"
|
||||
)
|
||||
self.assertEqual(
|
||||
genericpath.commonprefix(["/home/swen/spam", "/home/swen/spam"]),
|
||||
"/home/swen/spam"
|
||||
)
|
||||
|
||||
def test_getsize(self):
|
||||
f = open(test_support.TESTFN, "wb")
|
||||
try:
|
||||
f.write("foo")
|
||||
f.close()
|
||||
self.assertEqual(genericpath.getsize(test_support.TESTFN), 3)
|
||||
finally:
|
||||
if not f.closed:
|
||||
f.close()
|
||||
os.remove(test_support.TESTFN)
|
||||
|
||||
def test_time(self):
|
||||
f = open(test_support.TESTFN, "wb")
|
||||
try:
|
||||
f.write("foo")
|
||||
f.close()
|
||||
f = open(test_support.TESTFN, "ab")
|
||||
f.write("bar")
|
||||
f.close()
|
||||
f = open(test_support.TESTFN, "rb")
|
||||
d = f.read()
|
||||
f.close()
|
||||
self.assertEqual(d, "foobar")
|
||||
|
||||
self.assert_(
|
||||
genericpath.getctime(test_support.TESTFN) <=
|
||||
genericpath.getmtime(test_support.TESTFN)
|
||||
)
|
||||
finally:
|
||||
if not f.closed:
|
||||
f.close()
|
||||
os.remove(test_support.TESTFN)
|
||||
|
||||
def test_exists(self):
|
||||
self.assertIs(genericpath.exists(test_support.TESTFN), False)
|
||||
f = open(test_support.TESTFN, "wb")
|
||||
try:
|
||||
f.write("foo")
|
||||
f.close()
|
||||
self.assertIs(genericpath.exists(test_support.TESTFN), True)
|
||||
finally:
|
||||
if not f.close():
|
||||
f.close()
|
||||
try:
|
||||
os.remove(test_support.TESTFN)
|
||||
except os.error:
|
||||
pass
|
||||
|
||||
self.assertRaises(TypeError, genericpath.exists)
|
||||
|
||||
def test_isdir(self):
|
||||
self.assertIs(genericpath.isdir(test_support.TESTFN), False)
|
||||
f = open(test_support.TESTFN, "wb")
|
||||
try:
|
||||
f.write("foo")
|
||||
f.close()
|
||||
self.assertIs(genericpath.isdir(test_support.TESTFN), False)
|
||||
os.remove(test_support.TESTFN)
|
||||
os.mkdir(test_support.TESTFN)
|
||||
self.assertIs(genericpath.isdir(test_support.TESTFN), True)
|
||||
os.rmdir(test_support.TESTFN)
|
||||
finally:
|
||||
if not f.close():
|
||||
f.close()
|
||||
try:
|
||||
os.remove(test_support.TESTFN)
|
||||
except os.error:
|
||||
pass
|
||||
try:
|
||||
os.rmdir(test_support.TESTFN)
|
||||
except os.error:
|
||||
pass
|
||||
|
||||
self.assertRaises(TypeError, genericpath.isdir)
|
||||
|
||||
def test_isfile(self):
|
||||
self.assertIs(genericpath.isfile(test_support.TESTFN), False)
|
||||
f = open(test_support.TESTFN, "wb")
|
||||
try:
|
||||
f.write("foo")
|
||||
f.close()
|
||||
self.assertIs(genericpath.isfile(test_support.TESTFN), True)
|
||||
os.remove(test_support.TESTFN)
|
||||
os.mkdir(test_support.TESTFN)
|
||||
self.assertIs(genericpath.isfile(test_support.TESTFN), False)
|
||||
os.rmdir(test_support.TESTFN)
|
||||
finally:
|
||||
if not f.close():
|
||||
f.close()
|
||||
try:
|
||||
os.remove(test_support.TESTFN)
|
||||
except os.error:
|
||||
pass
|
||||
try:
|
||||
os.rmdir(test_support.TESTFN)
|
||||
except os.error:
|
||||
pass
|
||||
|
||||
self.assertRaises(TypeError, genericpath.isdir)
|
||||
|
||||
def test_samefile(self):
|
||||
f = open(test_support.TESTFN + "1", "wb")
|
||||
try:
|
||||
f.write("foo")
|
||||
f.close()
|
||||
self.assertIs(
|
||||
genericpath.samefile(
|
||||
test_support.TESTFN + "1",
|
||||
test_support.TESTFN + "1"
|
||||
),
|
||||
True
|
||||
)
|
||||
# If we don't have links, assume that os.stat doesn't return resonable
|
||||
# inode information and thus, that samefile() doesn't work
|
||||
if hasattr(os, "symlink"):
|
||||
os.symlink(
|
||||
test_support.TESTFN + "1",
|
||||
test_support.TESTFN + "2"
|
||||
)
|
||||
self.assertIs(
|
||||
genericpath.samefile(
|
||||
test_support.TESTFN + "1",
|
||||
test_support.TESTFN + "2"
|
||||
),
|
||||
True
|
||||
)
|
||||
os.remove(test_support.TESTFN + "2")
|
||||
f = open(test_support.TESTFN + "2", "wb")
|
||||
f.write("bar")
|
||||
f.close()
|
||||
self.assertIs(
|
||||
genericpath.samefile(
|
||||
test_support.TESTFN + "1",
|
||||
test_support.TESTFN + "2"
|
||||
),
|
||||
False
|
||||
)
|
||||
finally:
|
||||
if not f.close():
|
||||
f.close()
|
||||
try:
|
||||
os.remove(test_support.TESTFN + "1")
|
||||
except os.error:
|
||||
pass
|
||||
try:
|
||||
os.remove(test_support.TESTFN + "2")
|
||||
except os.error:
|
||||
pass
|
||||
|
||||
self.assertRaises(TypeError, genericpath.samefile)
|
||||
|
||||
def test_main():
|
||||
test_support.run_unittest(AllCommonTest)
|
||||
|
||||
if __name__=="__main__":
|
||||
test_main()
|
Loading…
Reference in New Issue