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Diffstat (limited to 'AppPkg/Applications/Python/PyMod-2.7.2/Lib/ntpath.py')
| -rw-r--r-- | AppPkg/Applications/Python/PyMod-2.7.2/Lib/ntpath.py | 528 |
1 files changed, 528 insertions, 0 deletions
diff --git a/AppPkg/Applications/Python/PyMod-2.7.2/Lib/ntpath.py b/AppPkg/Applications/Python/PyMod-2.7.2/Lib/ntpath.py new file mode 100644 index 0000000000..970a6038cf --- /dev/null +++ b/AppPkg/Applications/Python/PyMod-2.7.2/Lib/ntpath.py @@ -0,0 +1,528 @@ +# Module 'ntpath' -- common operations on WinNT/Win95 pathnames
+"""Common pathname manipulations, WindowsNT/95 version.
+
+Instead of importing this module directly, import os and refer to this
+module as os.path.
+"""
+
+import os
+import sys
+import stat
+import genericpath
+import warnings
+
+from genericpath import *
+
+__all__ = ["normcase","isabs","join","splitdrive","split","splitext",
+ "basename","dirname","commonprefix","getsize","getmtime",
+ "getatime","getctime", "islink","exists","lexists","isdir","isfile",
+ "ismount","walk","expanduser","expandvars","normpath","abspath",
+ "splitunc","curdir","pardir","sep","pathsep","defpath","altsep",
+ "extsep","devnull","realpath","supports_unicode_filenames","relpath"]
+
+# strings representing various path-related bits and pieces
+curdir = '.'
+pardir = '..'
+extsep = '.'
+sep = '\\'
+pathsep = ';'
+altsep = '/'
+defpath = '.;C:\\bin'
+if 'ce' in sys.builtin_module_names:
+ defpath = '\\Windows'
+elif 'os2' in sys.builtin_module_names:
+ # OS/2 w/ VACPP
+ altsep = '/'
+devnull = 'nul'
+
+# Normalize the case of a pathname and map slashes to backslashes.
+# Other normalizations (such as optimizing '../' away) are not done
+# (this is done by normpath).
+
+def normcase(s):
+ """Normalize case of pathname.
+
+ Makes all characters lowercase and all slashes into backslashes."""
+ return s.replace("/", "\\").lower()
+
+
+# Return whether a path is absolute.
+# Trivial in Posix, harder on the Mac or MS-DOS.
+# For DOS it is absolute if it starts with a slash or backslash (current
+# volume), or if a pathname after the volume letter and colon / UNC resource
+# starts with a slash or backslash.
+
+def isabs(s):
+ """Test whether a path is absolute"""
+ s = splitdrive(s)[1]
+ return s != '' and s[:1] in '/\\'
+
+
+# Join two (or more) paths.
+
+def join(a, *p):
+ """Join two or more pathname components, inserting "\\" as needed.
+ If any component is an absolute path, all previous path components
+ will be discarded."""
+ path = a
+ for b in p:
+ b_wins = 0 # set to 1 iff b makes path irrelevant
+ if path == "":
+ b_wins = 1
+
+ elif isabs(b):
+ # This probably wipes out path so far. However, it's more
+ # complicated if path begins with a drive letter:
+ # 1. join('c:', '/a') == 'c:/a'
+ # 2. join('c:/', '/a') == 'c:/a'
+ # But
+ # 3. join('c:/a', '/b') == '/b'
+ # 4. join('c:', 'd:/') = 'd:/'
+ # 5. join('c:/', 'd:/') = 'd:/'
+ if path[1:2] != ":" or b[1:2] == ":":
+ # Path doesn't start with a drive letter, or cases 4 and 5.
+ b_wins = 1
+
+ # Else path has a drive letter, and b doesn't but is absolute.
+ elif len(path) > 3 or (len(path) == 3 and
+ path[-1] not in "/\\"):
+ # case 3
+ b_wins = 1
+
+ if b_wins:
+ path = b
+ else:
+ # Join, and ensure there's a separator.
+ assert len(path) > 0
+ if path[-1] in "/\\":
+ if b and b[0] in "/\\":
+ path += b[1:]
+ else:
+ path += b
+ elif path[-1] == ":":
+ path += b
+ elif b:
+ if b[0] in "/\\":
+ path += b
+ else:
+ path += "\\" + b
+ else:
+ # path is not empty and does not end with a backslash,
+ # but b is empty; since, e.g., split('a/') produces
+ # ('a', ''), it's best if join() adds a backslash in
+ # this case.
+ path += '\\'
+
+ return path
+
+
+# Split a path in a drive specification (a drive letter followed by a
+# colon) and the path specification.
+# It is always true that drivespec + pathspec == p
+def splitdrive(p):
+ """Split a pathname into drive and path specifiers. Returns a 2-tuple
+"(drive,path)"; either part may be empty"""
+ pparts = p.split(':', 2)
+ numparts = len(pparts)
+ if numparts == 2:
+ return pparts[0] + ':', pparts[1]
+ else:
+ if numparts == 1:
+ return '', pparts[0]
+ return '', p
+
+
+# Parse UNC paths
+def splitunc(p):
+ """Split a pathname into UNC mount point and relative path specifiers.
+
+ Return a 2-tuple (unc, rest); either part may be empty.
+ If unc is not empty, it has the form '//host/mount' (or similar
+ using backslashes). unc+rest is always the input path.
+ Paths containing drive letters never have an UNC part.
+ """
+ if len(p.split(':', 2)) > 1:
+ return '', p # Drive letter present
+ firstTwo = p[0:2]
+ if firstTwo == '//' or firstTwo == '\\\\':
+ # is a UNC path:
+ # vvvvvvvvvvvvvvvvvvvv equivalent to drive letter
+ # \\machine\mountpoint\directories...
+ # directory ^^^^^^^^^^^^^^^
+ normp = normcase(p)
+ index = normp.find('\\', 2)
+ if index == -1:
+ ##raise RuntimeError, 'illegal UNC path: "' + p + '"'
+ return ("", p)
+ index = normp.find('\\', index + 1)
+ if index == -1:
+ index = len(p)
+ return p[:index], p[index:]
+ return '', p
+
+
+# Split a path in head (everything up to the last '/') and tail (the
+# rest). After the trailing '/' is stripped, the invariant
+# join(head, tail) == p holds.
+# The resulting head won't end in '/' unless it is the root.
+
+def split(p):
+ """Split a pathname.
+
+ Return tuple (head, tail) where tail is everything after the final slash.
+ Either part may be empty."""
+
+ d, p = splitdrive(p)
+ # set i to index beyond p's last slash
+ i = len(p)
+ while i and p[i-1] not in '/\\':
+ i = i - 1
+ head, tail = p[:i], p[i:] # now tail has no slashes
+ # remove trailing slashes from head, unless it's all slashes
+ head2 = head
+ while head2 and head2[-1] in '/\\':
+ head2 = head2[:-1]
+ head = head2 or head
+ return d + head, tail
+
+
+# Split a path in root and extension.
+# The extension is everything starting at the last dot in the last
+# pathname component; the root is everything before that.
+# It is always true that root + ext == p.
+
+def splitext(p):
+ return genericpath._splitext(p, sep, altsep, extsep)
+splitext.__doc__ = genericpath._splitext.__doc__
+
+
+# Return the tail (basename) part of a path.
+
+def basename(p):
+ """Returns the final component of a pathname"""
+ return split(p)[1]
+
+
+# Return the head (dirname) part of a path.
+
+def dirname(p):
+ """Returns the directory component of a pathname"""
+ return split(p)[0]
+
+# Is a path a symbolic link?
+# This will always return false on systems where posix.lstat doesn't exist.
+
+def islink(path):
+ """Test for symbolic link.
+ On WindowsNT/95 and OS/2 always returns false
+ """
+ return False
+
+# alias exists to lexists
+lexists = exists
+
+# Is a path a mount point? Either a root (with or without drive letter)
+# or an UNC path with at most a / or \ after the mount point.
+
+def ismount(path):
+ """Test whether a path is a mount point (defined as root of drive)"""
+ unc, rest = splitunc(path)
+ if unc:
+ return rest in ("", "/", "\\")
+ p = splitdrive(path)[1]
+ return len(p) == 1 and p[0] in '/\\'
+
+
+# Directory tree walk.
+# For each directory under top (including top itself, but excluding
+# '.' and '..'), func(arg, dirname, filenames) is called, where
+# dirname is the name of the directory and filenames is the list
+# of files (and subdirectories etc.) in the directory.
+# The func may modify the filenames list, to implement a filter,
+# or to impose a different order of visiting.
+
+def walk(top, func, arg):
+ """Directory tree walk with callback function.
+
+ For each directory in the directory tree rooted at top (including top
+ itself, but excluding '.' and '..'), call func(arg, dirname, fnames).
+ dirname is the name of the directory, and fnames a list of the names of
+ the files and subdirectories in dirname (excluding '.' and '..'). func
+ may modify the fnames list in-place (e.g. via del or slice assignment),
+ and walk will only recurse into the subdirectories whose names remain in
+ fnames; this can be used to implement a filter, or to impose a specific
+ order of visiting. No semantics are defined for, or required of, arg,
+ beyond that arg is always passed to func. It can be used, e.g., to pass
+ a filename pattern, or a mutable object designed to accumulate
+ statistics. Passing None for arg is common."""
+ warnings.warnpy3k("In 3.x, os.path.walk is removed in favor of os.walk.",
+ stacklevel=2)
+ try:
+ names = os.listdir(top)
+ except os.error:
+ return
+ func(arg, top, names)
+ for name in names:
+ name = join(top, name)
+ if isdir(name):
+ walk(name, func, arg)
+
+
+# Expand paths beginning with '~' or '~user'.
+# '~' means $HOME; '~user' means that user's home directory.
+# If the path doesn't begin with '~', or if the user or $HOME is unknown,
+# the path is returned unchanged (leaving error reporting to whatever
+# function is called with the expanded path as argument).
+# See also module 'glob' for expansion of *, ? and [...] in pathnames.
+# (A function should also be defined to do full *sh-style environment
+# variable expansion.)
+
+def expanduser(path):
+ """Expand ~ and ~user constructs.
+
+ If user or $HOME is unknown, do nothing."""
+ if path[:1] != '~':
+ return path
+ i, n = 1, len(path)
+ while i < n and path[i] not in '/\\':
+ i = i + 1
+
+ if 'HOME' in os.environ:
+ userhome = os.environ['HOME']
+ elif 'USERPROFILE' in os.environ:
+ userhome = os.environ['USERPROFILE']
+ elif not 'HOMEPATH' in os.environ:
+ return path
+ else:
+ try:
+ drive = os.environ['HOMEDRIVE']
+ except KeyError:
+ drive = ''
+ userhome = join(drive, os.environ['HOMEPATH'])
+
+ if i != 1: #~user
+ userhome = join(dirname(userhome), path[1:i])
+
+ return userhome + path[i:]
+
+
+# Expand paths containing shell variable substitutions.
+# The following rules apply:
+# - no expansion within single quotes
+# - '$$' is translated into '$'
+# - '%%' is translated into '%' if '%%' are not seen in %var1%%var2%
+# - ${varname} is accepted.
+# - $varname is accepted.
+# - %varname% is accepted.
+# - varnames can be made out of letters, digits and the characters '_-'
+# (though is not verified in the ${varname} and %varname% cases)
+# XXX With COMMAND.COM you can use any characters in a variable name,
+# XXX except '^|<>='.
+
+def expandvars(path):
+ """Expand shell variables of the forms $var, ${var} and %var%.
+
+ Unknown variables are left unchanged."""
+ if '$' not in path and '%' not in path:
+ return path
+ import string
+ varchars = string.ascii_letters + string.digits + '_-'
+ res = ''
+ index = 0
+ pathlen = len(path)
+ while index < pathlen:
+ c = path[index]
+ if c == '\'': # no expansion within single quotes
+ path = path[index + 1:]
+ pathlen = len(path)
+ try:
+ index = path.index('\'')
+ res = res + '\'' + path[:index + 1]
+ except ValueError:
+ res = res + path
+ index = pathlen - 1
+ elif c == '%': # variable or '%'
+ if path[index + 1:index + 2] == '%':
+ res = res + c
+ index = index + 1
+ else:
+ path = path[index+1:]
+ pathlen = len(path)
+ try:
+ index = path.index('%')
+ except ValueError:
+ res = res + '%' + path
+ index = pathlen - 1
+ else:
+ var = path[:index]
+ if var in os.environ:
+ res = res + os.environ[var]
+ else:
+ res = res + '%' + var + '%'
+ elif c == '$': # variable or '$$'
+ if path[index + 1:index + 2] == '$':
+ res = res + c
+ index = index + 1
+ elif path[index + 1:index + 2] == '{':
+ path = path[index+2:]
+ pathlen = len(path)
+ try:
+ index = path.index('}')
+ var = path[:index]
+ if var in os.environ:
+ res = res + os.environ[var]
+ else:
+ res = res + '${' + var + '}'
+ except ValueError:
+ res = res + '${' + path
+ index = pathlen - 1
+ else:
+ var = ''
+ index = index + 1
+ c = path[index:index + 1]
+ while c != '' and c in varchars:
+ var = var + c
+ index = index + 1
+ c = path[index:index + 1]
+ if var in os.environ:
+ res = res + os.environ[var]
+ else:
+ res = res + '$' + var
+ if c != '':
+ index = index - 1
+ 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.
+# Previously, this function also truncated pathnames to 8+3 format,
+# but as this module is called "ntpath", that's obviously wrong!
+
+def normpath(path):
+ """Normalize path, eliminating double slashes, etc."""
+ # Preserve unicode (if path is unicode)
+ backslash, dot = (u'\\', u'.') if isinstance(path, unicode) else ('\\', '.')
+ if path.startswith(('\\\\.\\', '\\\\?\\')):
+ # in the case of paths with these prefixes:
+ # \\.\ -> device names
+ # \\?\ -> literal paths
+ # do not do any normalization, but return the path unchanged
+ return path
+ path = path.replace("/", "\\")
+ prefix, path = splitdrive(path)
+ # We need to be careful here. If the prefix is empty, and the path starts
+ # with a backslash, it could either be an absolute path on the current
+ # drive (\dir1\dir2\file) or a UNC filename (\\server\mount\dir1\file). It
+ # is therefore imperative NOT to collapse multiple backslashes blindly in
+ # that case.
+ # The code below preserves multiple backslashes when there is no drive
+ # letter. This means that the invalid filename \\\a\b is preserved
+ # unchanged, where a\\\b is normalised to a\b. It's not clear that there
+ # is any better behaviour for such edge cases.
+ if prefix == '':
+ # No drive letter - preserve initial backslashes
+ while path[:1] == "\\":
+ prefix = prefix + backslash
+ path = path[1:]
+ else:
+ # We have a drive letter - collapse initial backslashes
+ if path.startswith("\\"):
+ prefix = prefix + backslash
+ path = path.lstrip("\\")
+ comps = path.split("\\")
+ i = 0
+ while i < len(comps):
+ if comps[i] in ('.', ''):
+ del comps[i]
+ elif comps[i] == '..':
+ if i > 0 and comps[i-1] != '..':
+ del comps[i-1:i+1]
+ i -= 1
+ 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)
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