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ntpath.pyc
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# Source Generated with Decompyle++
# File: in.pyc (Python 2.7)
'''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']
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:
altsep = '/'
devnull = 'nul'
def normcase(s):
'''Normalize case of pathname.
Makes all characters lowercase and all slashes into backslashes.'''
return s.replace('/', '\\').lower()
def isabs(s):
'''Test whether a path is absolute'''
s = splitdrive(s)[1]
if s != '':
pass
return s[:1] in '/\\'
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
if path == '':
b_wins = 1
elif isabs(b):
if path[1:2] != ':' or b[1:2] == ':':
b_wins = 1
elif (len(path) > 3 or len(path) == 3) and path[-1] not in '/\\':
b_wins = 1
if b_wins:
path = b
continue
if not len(path) > 0:
raise AssertionError
if None[-1] in '/\\':
if b and b[0] in '/\\':
path += b[1:]
else:
path += b
if path[-1] == ':':
path += b
continue
if b:
if b[0] in '/\\':
path += b
else:
path += '\\' + b
path += '\\'
return path
def splitdrive(p):
'''Split a pathname into drive and path specifiers. Returns a 2-tuple
"(drive,path)"; either part may be empty'''
if p[1:2] == ':':
return (p[0:2], p[2:])
return (None, p)
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 p[1:2] == ':':
return ('', p)
firstTwo = None[0:2]
if firstTwo == '//' or firstTwo == '\\\\':
normp = normcase(p)
index = normp.find('\\', 2)
if index == -1:
return ('', p)
index = None.find('\\', index + 1)
if index == -1:
index = len(p)
return (p[:index], p[index:])
return (None, p)
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)
i = len(p)
while i and p[i - 1] not in '/\\':
i = i - 1
head = p[:i]
tail = p[i:]
head2 = head
while head2 and head2[-1] in '/\\':
head2 = head2[:-1]
if not head2:
pass
head = head
return (d + head, tail)
def splitext(p):
return genericpath._splitext(p, sep, altsep, extsep)
splitext.__doc__ = genericpath._splitext.__doc__
def basename(p):
'''Returns the final component of a pathname'''
return split(p)[1]
def dirname(p):
'''Returns the directory component of a pathname'''
return split(p)[0]
def islink(path):
'''Test for symbolic link.
On WindowsNT/95 and OS/2 always returns false
'''
return False
lexists = exists
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 = None(path)[1]
if len(p) == 1:
pass
return p[0] in '/\\'
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 None
func(arg, top, names)
for name in names:
name = join(top, name)
if isdir(name):
walk(name, func, arg)
continue
def expanduser(path):
'''Expand ~ and ~user constructs.
If user or $HOME is unknown, do nothing.'''
if path[:1] != '~':
return path
i = None
n = 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 'HOMEPATH' not in os.environ:
return path
try:
drive = os.environ['HOMEDRIVE']
except KeyError:
drive = ''
userhome = join(drive, os.environ['HOMEPATH'])
if i != 1:
userhome = join(dirname(userhome), path[1:i])
return userhome + path[i:]
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 as string
varchars = string.ascii_letters + string.digits + '_-'
res = ''
index = 0
pathlen = len(path)
while index < pathlen:
c = path[index]
if c == "'":
path = path[index + 1:]
pathlen = len(path)
try:
index = path.index("'")
res = res + "'" + path[:index + 1]
except ValueError:
res = res + path
index = pathlen - 1
if c == '%':
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
var = path[:index]
if var in os.environ:
res = res + os.environ[var]
else:
res = res + '%' + var + '%'
elif c == '$':
if path[index + 1:index + 2] == '$':
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
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
def normpath(path):
'''Normalize path, eliminating double slashes, etc.'''
(backslash, dot) = (u'\\', u'.') if isinstance(path, unicode) else ('\\', '.')
if path.startswith(('\\\\.\\', '\\\\?\\')):
return path
path = None.replace('/', '\\')
(prefix, path) = splitdrive(path)
if prefix == '':
while path[:1] == '\\':
prefix = prefix + backslash
path = path[1:]
elif path.startswith('\\'):
prefix = prefix + backslash
path = path.lstrip('\\')
comps = path.split('\\')
i = 0
while i < len(comps):
if comps[i] in ('.', ''):
del comps[i]
continue
if 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
i += 1
if not prefix and not comps:
comps.append(dot)
return prefix + backslash.join(comps)
try:
from nt import _getfullpathname
except ImportError:
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)
def abspath(path):
'''Return the absolute version of a path.'''
if path:
try:
path = _getfullpathname(path)
except WindowsError:
pass
if isinstance(path, unicode):
path = os.getcwdu()
else:
path = os.getcwd()
return normpath(path)
realpath = abspath
if hasattr(sys, 'getwindowsversion'):
pass
supports_unicode_filenames = 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))
raise ValueError('path is on drive %s, start on drive %s' % (path_prefix, start_prefix))
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 None(*rel_list)
try:
from nt import _isdir as isdir
except ImportError:
pass