Current File : //lib/python3.6/site-packages/pip/compat/__init__.py
"""Stuff that differs in different Python versions and platform
distributions."""
from __future__ import absolute_import, division
import os
import sys
from pip._vendor.six import text_type
try:
from logging.config import dictConfig as logging_dictConfig
except ImportError:
from pip.compat.dictconfig import dictConfig as logging_dictConfig
try:
from collections import OrderedDict
except ImportError:
from pip._vendor.ordereddict import OrderedDict
try:
import ipaddress
except ImportError:
try:
from pip._vendor import ipaddress
except ImportError:
import ipaddr as ipaddress
ipaddress.ip_address = ipaddress.IPAddress
ipaddress.ip_network = ipaddress.IPNetwork
try:
import sysconfig
def get_stdlib():
paths = [
sysconfig.get_path("stdlib"),
sysconfig.get_path("platstdlib"),
]
return set(filter(bool, paths))
except ImportError:
from distutils import sysconfig
def get_stdlib():
paths = [
sysconfig.get_python_lib(standard_lib=True),
sysconfig.get_python_lib(standard_lib=True, plat_specific=True),
]
return set(filter(bool, paths))
__all__ = [
"logging_dictConfig", "ipaddress", "uses_pycache", "console_to_str",
"native_str", "get_path_uid", "stdlib_pkgs", "WINDOWS", "samefile",
"OrderedDict",
]
if sys.version_info >= (3, 4):
uses_pycache = True
from importlib.util import cache_from_source
else:
import imp
uses_pycache = hasattr(imp, 'cache_from_source')
if uses_pycache:
cache_from_source = imp.cache_from_source
else:
cache_from_source = None
if sys.version_info >= (3,):
def console_to_str(s):
try:
return s.decode(sys.__stdout__.encoding)
except UnicodeDecodeError:
return s.decode('utf_8')
def native_str(s, replace=False):
if isinstance(s, bytes):
return s.decode('utf-8', 'replace' if replace else 'strict')
return s
else:
def console_to_str(s):
return s
def native_str(s, replace=False):
# Replace is ignored -- unicode to UTF-8 can't fail
if isinstance(s, text_type):
return s.encode('utf-8')
return s
def total_seconds(td):
if hasattr(td, "total_seconds"):
return td.total_seconds()
else:
val = td.microseconds + (td.seconds + td.days * 24 * 3600) * 10 ** 6
return val / 10 ** 6
def get_path_uid(path):
"""
Return path's uid.
Does not follow symlinks:
https://github.com/pypa/pip/pull/935#discussion_r5307003
Placed this function in compat due to differences on AIX and
Jython, that should eventually go away.
:raises OSError: When path is a symlink or can't be read.
"""
if hasattr(os, 'O_NOFOLLOW'):
fd = os.open(path, os.O_RDONLY | os.O_NOFOLLOW)
file_uid = os.fstat(fd).st_uid
os.close(fd)
else: # AIX and Jython
# WARNING: time of check vulnerability, but best we can do w/o NOFOLLOW
if not os.path.islink(path):
# older versions of Jython don't have `os.fstat`
file_uid = os.stat(path).st_uid
else:
# raise OSError for parity with os.O_NOFOLLOW above
raise OSError(
"%s is a symlink; Will not return uid for symlinks" % path
)
return file_uid
def expanduser(path):
"""
Expand ~ and ~user constructions.
Includes a workaround for http://bugs.python.org/issue14768
"""
expanded = os.path.expanduser(path)
if path.startswith('~/') and expanded.startswith('//'):
expanded = expanded[1:]
return expanded
# packages in the stdlib that may have installation metadata, but should not be
# considered 'installed'. this theoretically could be determined based on
# dist.location (py27:`sysconfig.get_paths()['stdlib']`,
# py26:sysconfig.get_config_vars('LIBDEST')), but fear platform variation may
# make this ineffective, so hard-coding
stdlib_pkgs = ('python', 'wsgiref')
if sys.version_info >= (2, 7):
stdlib_pkgs += ('argparse',)
# windows detection, covers cpython and ironpython
WINDOWS = (sys.platform.startswith("win") or
(sys.platform == 'cli' and os.name == 'nt'))
def samefile(file1, file2):
"""Provide an alternative for os.path.samefile on Windows/Python2"""
if hasattr(os.path, 'samefile'):
return os.path.samefile(file1, file2)
else:
path1 = os.path.normcase(os.path.abspath(file1))
path2 = os.path.normcase(os.path.abspath(file2))
return path1 == path2
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