AppPkg/Applications/Python/Python-2.7.10: Initial Checkin part 5/5.
These files are candidates for modification during the port to EDK II. The following files were copied, unchanged, from the Python 2.7.2 port. Ia32/pyconfig.h X64/pyconfig.h PyMod-2.7.10/Modules/config.c PyMod-2.7.10/Modules/edk2module.c Py2710ReadMe.txt // Copied from PythonReadMe.txt Python2710.inf // Copied from PythonCore.inf The remaining files were copied, unchanged, from the cPython 2.7.10 distribution. These files are unchanged and set the baseline for subsequent commits. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Daryl McDaniel <edk2-lists@mc2research.org> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18741 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Daryl McDaniel
committed by
darylm503
darylm503
parent
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commit
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# Module 'ntpath' -- common operations on WinNT/Win95 pathnames
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"""Common pathname manipulations, WindowsNT/95 version.
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Instead of importing this module directly, import os and refer to this
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module as os.path.
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"""
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import os
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import sys
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import stat
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import genericpath
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import warnings
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from genericpath import *
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from genericpath import _unicode
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__all__ = ["normcase","isabs","join","splitdrive","split","splitext",
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"basename","dirname","commonprefix","getsize","getmtime",
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"getatime","getctime", "islink","exists","lexists","isdir","isfile",
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"ismount","walk","expanduser","expandvars","normpath","abspath",
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"splitunc","curdir","pardir","sep","pathsep","defpath","altsep",
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"extsep","devnull","realpath","supports_unicode_filenames","relpath"]
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# strings representing various path-related bits and pieces
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curdir = '.'
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pardir = '..'
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extsep = '.'
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sep = '\\'
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pathsep = ';'
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altsep = '/'
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defpath = '.;C:\\bin'
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if 'ce' in sys.builtin_module_names:
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defpath = '\\Windows'
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elif 'os2' in sys.builtin_module_names:
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# OS/2 w/ VACPP
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altsep = '/'
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devnull = 'nul'
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# Normalize the case of a pathname and map slashes to backslashes.
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# Other normalizations (such as optimizing '../' away) are not done
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# (this is done by normpath).
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def normcase(s):
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"""Normalize case of pathname.
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Makes all characters lowercase and all slashes into backslashes."""
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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(path, *paths):
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"""Join two or more pathname components, inserting "\\" as needed."""
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result_drive, result_path = splitdrive(path)
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for p in paths:
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p_drive, p_path = splitdrive(p)
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if p_path and p_path[0] in '\\/':
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# Second path is absolute
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if p_drive or not result_drive:
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result_drive = p_drive
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result_path = p_path
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continue
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elif p_drive and p_drive != result_drive:
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if p_drive.lower() != result_drive.lower():
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# Different drives => ignore the first path entirely
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result_drive = p_drive
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result_path = p_path
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continue
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# Same drive in different case
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result_drive = p_drive
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# Second path is relative to the first
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if result_path and result_path[-1] not in '\\/':
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result_path = result_path + '\\'
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result_path = result_path + p_path
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## add separator between UNC and non-absolute path
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if (result_path and result_path[0] not in '\\/' and
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result_drive and result_drive[-1:] != ':'):
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return result_drive + sep + result_path
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return result_drive + result_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/UNC sharepoint and relative path specifiers.
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Returns a 2-tuple (drive_or_unc, path); either part may be empty.
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If you assign
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result = splitdrive(p)
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It is always true that:
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result[0] + result[1] == p
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If the path contained a drive letter, drive_or_unc will contain everything
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up to and including the colon. e.g. splitdrive("c:/dir") returns ("c:", "/dir")
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If the path contained a UNC path, the drive_or_unc will contain the host name
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and share up to but not including the fourth directory separator character.
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e.g. splitdrive("//host/computer/dir") returns ("//host/computer", "/dir")
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Paths cannot contain both a drive letter and a UNC path.
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"""
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if len(p) > 1:
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normp = p.replace(altsep, sep)
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if (normp[0:2] == sep*2) and (normp[2:3] != sep):
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# is a UNC path:
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# vvvvvvvvvvvvvvvvvvvv drive letter or UNC path
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# \\machine\mountpoint\directory\etc\...
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# directory ^^^^^^^^^^^^^^^
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index = normp.find(sep, 2)
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if index == -1:
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return '', p
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index2 = normp.find(sep, index + 1)
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# a UNC path can't have two slashes in a row
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# (after the initial two)
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if index2 == index + 1:
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return '', p
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if index2 == -1:
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index2 = len(p)
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return p[:index2], p[index2:]
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if normp[1] == ':':
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return p[: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 a 2-tuple (unc, rest); either part may be empty.
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If unc is not empty, it has the form '//host/mount' (or similar
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using backslashes). unc+rest is always the input path.
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Paths containing drive letters never have an UNC part.
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"""
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if p[1:2] == ':':
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return '', p # Drive letter present
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firstTwo = p[0:2]
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if firstTwo == '//' or firstTwo == '\\\\':
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# is a UNC path:
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# vvvvvvvvvvvvvvvvvvvv equivalent to drive letter
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# \\machine\mountpoint\directories...
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# directory ^^^^^^^^^^^^^^^
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normp = p.replace('\\', '/')
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index = normp.find('/', 2)
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if index <= 2:
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return '', p
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index2 = normp.find('/', index + 1)
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# a UNC path can't have two slashes in a row
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# (after the initial two)
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if index2 == index + 1:
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return '', p
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if index2 == -1:
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index2 = len(p)
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return p[:index2], p[index2:]
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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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return genericpath._splitext(p, sep, altsep, extsep)
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splitext.__doc__ = genericpath._splitext.__doc__
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# Return the tail (basename) part of a path.
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def basename(p):
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"""Returns the final component of a pathname"""
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return split(p)[1]
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# Return the head (dirname) part of a path.
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def dirname(p):
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"""Returns the directory component of a pathname"""
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return split(p)[0]
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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.
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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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# alias exists to lexists
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lexists = exists
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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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def ismount(path):
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"""Test whether a path is a mount point (defined as root of drive)"""
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unc, rest = splitunc(path)
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if unc:
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return rest in ("", "/", "\\")
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p = splitdrive(path)[1]
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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 with callback function.
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For each directory in the directory tree rooted at top (including top
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itself, but excluding '.' and '..'), call func(arg, dirname, fnames).
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dirname is the name of the directory, and fnames a list of the names of
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the files and subdirectories in dirname (excluding '.' and '..'). func
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may modify the fnames list in-place (e.g. via del or slice assignment),
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and walk will only recurse into the subdirectories whose names remain in
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fnames; this can be used to implement a filter, or to impose a specific
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order of visiting. No semantics are defined for, or required of, arg,
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beyond that arg is always passed to func. It can be used, e.g., to pass
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a filename pattern, or a mutable object designed to accumulate
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statistics. Passing None for arg is common."""
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warnings.warnpy3k("In 3.x, os.path.walk is removed in favor of os.walk.",
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stacklevel=2)
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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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for name in names:
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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 'HOME' in os.environ:
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userhome = os.environ['HOME']
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elif 'USERPROFILE' in os.environ:
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userhome = os.environ['USERPROFILE']
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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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if i != 1: #~user
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userhome = join(dirname(userhome), path[1:i])
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return userhome + path[i:]
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# Expand paths containing shell variable substitutions.
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# The following rules apply:
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# - no expansion within single quotes
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# - '$$' is translated into '$'
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# - '%%' is translated into '%' if '%%' are not seen in %var1%%var2%
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# - ${varname} is accepted.
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# - $varname is accepted.
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# - %varname% is accepted.
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# - varnames can be made out of letters, digits and the characters '_-'
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# (though is not verified in the ${varname} and %varname% cases)
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# XXX With COMMAND.COM you can use any characters in a variable name,
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# XXX except '^|<>='.
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def expandvars(path):
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"""Expand shell variables of the forms $var, ${var} and %var%.
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Unknown variables are left unchanged."""
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if '$' not in path and '%' not in path:
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return path
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import string
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varchars = string.ascii_letters + string.digits + '_-'
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if isinstance(path, _unicode):
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encoding = sys.getfilesystemencoding()
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def getenv(var):
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return os.environ[var.encode(encoding)].decode(encoding)
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else:
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def getenv(var):
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return os.environ[var]
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res = ''
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index = 0
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pathlen = len(path)
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while index < pathlen:
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c = path[index]
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if c == '\'': # no expansion within single quotes
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path = path[index + 1:]
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pathlen = len(path)
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try:
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index = path.index('\'')
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res = res + '\'' + path[:index + 1]
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except ValueError:
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res = res + c + path
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index = pathlen - 1
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elif c == '%': # variable or '%'
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if path[index + 1:index + 2] == '%':
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res = res + c
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index = index + 1
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else:
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path = path[index+1:]
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pathlen = len(path)
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try:
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index = path.index('%')
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except ValueError:
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res = res + '%' + path
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index = pathlen - 1
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else:
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var = path[:index]
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try:
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res = res + getenv(var)
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except KeyError:
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res = res + '%' + var + '%'
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elif c == '$': # variable or '$$'
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if path[index + 1:index + 2] == '$':
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res = res + c
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index = index + 1
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elif path[index + 1:index + 2] == '{':
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path = path[index+2:]
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pathlen = len(path)
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try:
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index = path.index('}')
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var = path[:index]
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try:
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res = res + getenv(var)
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except KeyError:
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res = res + '${' + var + '}'
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except ValueError:
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res = res + '${' + path
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index = pathlen - 1
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else:
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var = ''
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index = index + 1
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c = path[index:index + 1]
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while c != '' and c in varchars:
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var = var + c
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index = index + 1
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c = path[index:index + 1]
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try:
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res = res + getenv(var)
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except KeyError:
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res = res + '$' + var
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if c != '':
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index = index - 1
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else:
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res = res + c
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index = index + 1
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return res
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# Normalize a path, e.g. A//B, A/./B and A/foo/../B all become A\B.
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# Previously, this function also truncated pathnames to 8+3 format,
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||||
# but as this module is called "ntpath", that's obviously wrong!
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def normpath(path):
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"""Normalize path, eliminating double slashes, etc."""
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# Preserve unicode (if path is unicode)
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backslash, dot = (u'\\', u'.') if isinstance(path, _unicode) else ('\\', '.')
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if path.startswith(('\\\\.\\', '\\\\?\\')):
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# in the case of paths with these prefixes:
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# \\.\ -> device names
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# \\?\ -> literal paths
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||||
# do not do any normalization, but return the path unchanged
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return path
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path = path.replace("/", "\\")
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prefix, path = splitdrive(path)
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# We need to be careful here. If the prefix is empty, and the path starts
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# with a backslash, it could either be an absolute path on the current
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# drive (\dir1\dir2\file) or a UNC filename (\\server\mount\dir1\file). It
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||||
# is therefore imperative NOT to collapse multiple backslashes blindly in
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||||
# that case.
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||||
# The code below preserves multiple backslashes when there is no drive
|
||||
# letter. This means that the invalid filename \\\a\b is preserved
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||||
# unchanged, where a\\\b is normalised to a\b. It's not clear that there
|
||||
# is any better behaviour for such edge cases.
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||||
if prefix == '':
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||||
# No drive letter - preserve initial backslashes
|
||||
while path[:1] == "\\":
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||||
prefix = prefix + backslash
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||||
path = path[1:]
|
||||
else:
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||||
# We have a drive letter - collapse initial backslashes
|
||||
if path.startswith("\\"):
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prefix = prefix + backslash
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||||
path = path.lstrip("\\")
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||||
comps = path.split("\\")
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||||
i = 0
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||||
while i < len(comps):
|
||||
if comps[i] in ('.', ''):
|
||||
del comps[i]
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||||
elif comps[i] == '..':
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||||
if i > 0 and comps[i-1] != '..':
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||||
del comps[i-1:i+1]
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||||
i -= 1
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||||
elif i == 0 and prefix.endswith("\\"):
|
||||
del comps[i]
|
||||
else:
|
||||
i += 1
|
||||
else:
|
||||
i += 1
|
||||
# If the path is now empty, substitute '.'
|
||||
if not prefix and not comps:
|
||||
comps.append(dot)
|
||||
return prefix + backslash.join(comps)
|
||||
|
||||
|
||||
# Return an absolute path.
|
||||
try:
|
||||
from nt import _getfullpathname
|
||||
|
||||
except ImportError: # not running on Windows - mock up something sensible
|
||||
def abspath(path):
|
||||
"""Return the absolute version of a path."""
|
||||
if not isabs(path):
|
||||
if isinstance(path, _unicode):
|
||||
cwd = os.getcwdu()
|
||||
else:
|
||||
cwd = os.getcwd()
|
||||
path = join(cwd, path)
|
||||
return normpath(path)
|
||||
|
||||
else: # use native Windows method on Windows
|
||||
def abspath(path):
|
||||
"""Return the absolute version of a path."""
|
||||
|
||||
if path: # Empty path must return current working directory.
|
||||
try:
|
||||
path = _getfullpathname(path)
|
||||
except WindowsError:
|
||||
pass # Bad path - return unchanged.
|
||||
elif isinstance(path, _unicode):
|
||||
path = os.getcwdu()
|
||||
else:
|
||||
path = os.getcwd()
|
||||
return normpath(path)
|
||||
|
||||
# realpath is a no-op on systems without islink support
|
||||
realpath = abspath
|
||||
# Win9x family and earlier have no Unicode filename support.
|
||||
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_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_prefix, start_prefix))
|
||||
# Work out how much of the filepath is shared by start and path.
|
||||
i = 0
|
||||
for e1, e2 in zip(start_list, path_list):
|
||||
if e1.lower() != e2.lower():
|
||||
break
|
||||
i += 1
|
||||
|
||||
rel_list = [pardir] * (len(start_list)-i) + path_list[i:]
|
||||
if not rel_list:
|
||||
return curdir
|
||||
return join(*rel_list)
|
||||
|
||||
try:
|
||||
# The genericpath.isdir implementation uses os.stat and checks the mode
|
||||
# attribute to tell whether or not the path is a directory.
|
||||
# This is overkill on Windows - just pass the path to GetFileAttributes
|
||||
# and check the attribute from there.
|
||||
from nt import _isdir as isdir
|
||||
except ImportError:
|
||||
# Use genericpath.isdir as imported above.
|
||||
pass
|
||||
Reference in New Issue
Block a user