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annotate mercurial/pycompat.py @ 30303:ad40d307a9f0

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py3: have pycompat.ospathsep and pycompat.ossep We needed bytes version of os.sep and os.pathsep in py3 as they return unicodes.
author Pulkit Goyal <7895pulkit@gmail.com>
date Sun, 06 Nov 2016 03:44:44 +0530
parents 3874ddba1ab4
children e0d9b6aab4c5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # pycompat.py - portability shim for python 3
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2 #
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3 # This software may be used and distributed according to the terms of the
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4 # GNU General Public License version 2 or any later version.
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5
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6 """Mercurial portability shim for python 3.
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7
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8 This contains aliases to hide python version-specific details from the core.
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9 """
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10
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11 from __future__ import absolute_import
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12
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13 import os
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14 import sys
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15
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16 ispy3 = (sys.version_info[0] >= 3)
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17
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18 if not ispy3:
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19 import cPickle as pickle
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20 import cStringIO as io
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21 import httplib
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22 import Queue as _queue
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23 import SocketServer as socketserver
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24 import urlparse
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25 import xmlrpclib
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26 else:
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27 import http.client as httplib
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28 import io
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29 import pickle
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30 import queue as _queue
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31 import socketserver
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32 import urllib.parse as urlparse
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33 import xmlrpc.client as xmlrpclib
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34
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35 if ispy3:
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36 import builtins
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37 import functools
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38 fsencode = os.fsencode
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39 fsdecode = os.fsdecode
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40 # A bytes version of os.name.
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41 osname = os.name.encode('ascii')
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42 ospathsep = os.pathsep.encode('ascii')
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43 ossep = os.sep.encode('ascii')
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44
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45 def sysstr(s):
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46 """Return a keyword str to be passed to Python functions such as
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47 getattr() and str.encode()
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48
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49 This never raises UnicodeDecodeError. Non-ascii characters are
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50 considered invalid and mapped to arbitrary but unique code points
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51 such that 'sysstr(a) != sysstr(b)' for all 'a != b'.
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52 """
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53 if isinstance(s, builtins.str):
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54 return s
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55 return s.decode(u'latin-1')
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56
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57 def _wrapattrfunc(f):
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58 @functools.wraps(f)
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59 def w(object, name, *args):
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60 return f(object, sysstr(name), *args)
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61 return w
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62
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63 # these wrappers are automagically imported by hgloader
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64 delattr = _wrapattrfunc(builtins.delattr)
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65 getattr = _wrapattrfunc(builtins.getattr)
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66 hasattr = _wrapattrfunc(builtins.hasattr)
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67 setattr = _wrapattrfunc(builtins.setattr)
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68 xrange = builtins.range
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69
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70 else:
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71 def sysstr(s):
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72 return s
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73
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74 # Partial backport from os.py in Python 3, which only accepts bytes.
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75 # In Python 2, our paths should only ever be bytes, a unicode path
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76 # indicates a bug.
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77 def fsencode(filename):
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78 if isinstance(filename, str):
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79 return filename
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80 else:
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81 raise TypeError(
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82 "expect str, not %s" % type(filename).__name__)
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83
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84 # In Python 2, fsdecode() has a very chance to receive bytes. So it's
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85 # better not to touch Python 2 part as it's already working fine.
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86 def fsdecode(filename):
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87 return filename
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88
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89 osname = os.name
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90 ospathsep = os.pathsep
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91 ossep = os.sep
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92
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93 stringio = io.StringIO
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94 empty = _queue.Empty
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95 queue = _queue.Queue
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96
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97 class _pycompatstub(object):
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98 def __init__(self):
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99 self._aliases = {}
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100
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101 def _registeraliases(self, origin, items):
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102 """Add items that will be populated at the first access"""
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103 items = map(sysstr, items)
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104 self._aliases.update(
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105 (item.replace(sysstr('_'), sysstr('')).lower(), (origin, item))
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106 for item in items)
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107
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108 def __getattr__(self, name):
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109 try:
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110 origin, item = self._aliases[name]
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111 except KeyError:
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112 raise AttributeError(name)
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113 self.__dict__[name] = obj = getattr(origin, item)
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114 return obj
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115
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116 httpserver = _pycompatstub()
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117 urlreq = _pycompatstub()
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118 urlerr = _pycompatstub()
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119 if not ispy3:
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120 import BaseHTTPServer
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121 import CGIHTTPServer
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122 import SimpleHTTPServer
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123 import urllib2
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124 import urllib
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125 urlreq._registeraliases(urllib, (
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126 "addclosehook",
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127 "addinfourl",
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128 "ftpwrapper",
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129 "pathname2url",
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130 "quote",
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131 "splitattr",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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132 "splitpasswd",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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133 "splitport",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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134 "splituser",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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135 "unquote",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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136 "url2pathname",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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137 "urlencode",
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timeless <timeless@mozdev.org>
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138 ))
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139 urlreq._registeraliases(urllib2, (
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timeless <timeless@mozdev.org>
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140 "AbstractHTTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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141 "BaseHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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142 "build_opener",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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143 "FileHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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144 "FTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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145 "HTTPBasicAuthHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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146 "HTTPDigestAuthHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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147 "HTTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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148 "HTTPPasswordMgrWithDefaultRealm",
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timeless <timeless@mozdev.org>
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149 "HTTPSHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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150 "install_opener",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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151 "ProxyHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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152 "Request",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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153 "urlopen",
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timeless <timeless@mozdev.org>
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154 ))
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155 urlerr._registeraliases(urllib2, (
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156 "HTTPError",
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timeless <timeless@mozdev.org>
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157 "URLError",
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timeless <timeless@mozdev.org>
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158 ))
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159 httpserver._registeraliases(BaseHTTPServer, (
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160 "HTTPServer",
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161 "BaseHTTPRequestHandler",
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162 ))
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163 httpserver._registeraliases(SimpleHTTPServer, (
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164 "SimpleHTTPRequestHandler",
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165 ))
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166 httpserver._registeraliases(CGIHTTPServer, (
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167 "CGIHTTPRequestHandler",
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168 ))
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timeless <timeless@mozdev.org>
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169
29801
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170 else:
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171 import urllib.request
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172 urlreq._registeraliases(urllib.request, (
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timeless <timeless@mozdev.org>
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173 "AbstractHTTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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diff changeset
174 "addclosehook",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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175 "addinfourl",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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176 "BaseHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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177 "build_opener",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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178 "FileHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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179 "FTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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180 "ftpwrapper",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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181 "HTTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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182 "HTTPSHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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183 "install_opener",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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184 "pathname2url",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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185 "HTTPBasicAuthHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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186 "HTTPDigestAuthHandler",
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Gregory Szorc <gregory.szorc@gmail.com>
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187 "HTTPPasswordMgrWithDefaultRealm",
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timeless <timeless@mozdev.org>
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188 "ProxyHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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189 "quote",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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190 "Request",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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191 "splitattr",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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192 "splitpasswd",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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193 "splitport",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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194 "splituser",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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195 "unquote",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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196 "url2pathname",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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197 "urlopen",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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198 ))
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timeless <timeless@mozdev.org>
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199 import urllib.error
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200 urlerr._registeraliases(urllib.error, (
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timeless <timeless@mozdev.org>
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201 "HTTPError",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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202 "URLError",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
diff changeset
203 ))
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204 import http.server
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205 httpserver._registeraliases(http.server, (
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206 "HTTPServer",
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207 "BaseHTTPRequestHandler",
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Pulkit Goyal <7895pulkit@gmail.com>
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208 "SimpleHTTPRequestHandler",
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Pulkit Goyal <7895pulkit@gmail.com>
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209 "CGIHTTPRequestHandler",
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Pulkit Goyal <7895pulkit@gmail.com>
parents: 29455
diff changeset
210 ))