"""Stuff that differs in different Python versions and platform
distributions."""
import os
import imp
import sys
import site
__all__ = ['WindowsError']
uses_pycache = hasattr(imp, 'cache_from_source')
class NeverUsedException(Exception):
"""this exception should never be raised"""
try:
WindowsError = WindowsError
except NameError:
WindowsError = NeverUsedException
try:
#new in Python 3.3
PermissionError = PermissionError
except NameError:
PermissionError = NeverUsedException
console_encoding = sys.__stdout__.encoding
if sys.version_info >= (3,):
from io import StringIO, BytesIO
from functools import reduce
from urllib.error import URLError, HTTPError
from queue import Queue, Empty
from urllib.request import url2pathname, urlretrieve, pathname2url
from email import message as emailmessage
import urllib.parse as urllib
import urllib.request as urllib2
import configparser as ConfigParser
import xmlrpc.client as xmlrpclib
import urllib.parse as urlparse
import http.client as httplib
def cmp(a, b):
return (a > b) - (a < b)
def b(s):
return s.encode('utf-8')
def u(s):
return s.decode('utf-8')
def console_to_str(s):
try:
return s.decode(console_encoding)
except UnicodeDecodeError:
return s.decode('utf_8')
def get_http_message_param(http_message, param, default_value):
return http_message.get_param(param, default_value)
bytes = bytes
string_types = (str,)
raw_input = input
else:
from cStringIO import StringIO
from urllib2 import URLError, HTTPError
from Queue import Queue, Empty
from urllib import url2pathname, urlretrieve, pathname2url
from email import Message as emailmessage
import urllib
import urllib2
import urlparse
import ConfigParser
import xmlrpclib
import httplib
def b(s):
return s
def u(s):
return s
def console_to_str(s):
return s
def get_http_message_param(http_message, param, default_value):
result = http_message.getparam(param)
return result or default_value
bytes = str
string_types = (basestring,)
reduce = reduce
cmp = cmp
raw_input = raw_input
BytesIO = StringIO
from distutils.sysconfig import get_python_lib, get_python_version
#site.USER_SITE was created in py2.6
user_site = getattr(site, 'USER_SITE', None)
def product(*args, **kwds):
# product('ABCD', 'xy') --> Ax Ay Bx By Cx Cy Dx Dy
# product(range(2), repeat=3) --> 000 001 010 011 100 101 110 111
pools = list(map(tuple, args)) * kwds.get('repeat', 1)
result = [[]]
for pool in pools:
result = [x + [y] for x in result for y in pool]
for prod in result:
yield tuple(prod)
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 backwardcompat 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 vulnerabity, 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
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