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annotate mercurial/pycompat.py @ 30337:e0d9b6aab4c5

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pycompat: introduce an alias for urllib.unquote We have to use unquote_to_bytes on Python 3, so we need an abstraction for this.
author Augie Fackler <augie@google.com>
date Sun, 09 Oct 2016 09:02:25 -0400
parents ad40d307a9f0
children a2f2f694dce9
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 urlunquote = urlparse.unquote
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26 import xmlrpclib
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27 else:
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28 import http.client as httplib
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29 import io
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30 import pickle
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31 import queue as _queue
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32 import socketserver
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33 import urllib.parse as urlparse
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34 urlunquote = urlparse.unquote_to_bytes
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35 import xmlrpc.client as xmlrpclib
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36
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37 if ispy3:
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38 import builtins
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39 import functools
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40 fsencode = os.fsencode
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41 fsdecode = os.fsdecode
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42 # A bytes version of os.name.
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43 osname = os.name.encode('ascii')
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44 ospathsep = os.pathsep.encode('ascii')
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45 ossep = os.sep.encode('ascii')
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46
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47 def sysstr(s):
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48 """Return a keyword str to be passed to Python functions such as
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49 getattr() and str.encode()
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50
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51 This never raises UnicodeDecodeError. Non-ascii characters are
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52 considered invalid and mapped to arbitrary but unique code points
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53 such that 'sysstr(a) != sysstr(b)' for all 'a != b'.
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54 """
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55 if isinstance(s, builtins.str):
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56 return s
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57 return s.decode(u'latin-1')
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58
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59 def _wrapattrfunc(f):
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60 @functools.wraps(f)
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61 def w(object, name, *args):
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62 return f(object, sysstr(name), *args)
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63 return w
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64
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65 # these wrappers are automagically imported by hgloader
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66 delattr = _wrapattrfunc(builtins.delattr)
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67 getattr = _wrapattrfunc(builtins.getattr)
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68 hasattr = _wrapattrfunc(builtins.hasattr)
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69 setattr = _wrapattrfunc(builtins.setattr)
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70 xrange = builtins.range
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71
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72 else:
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73 def sysstr(s):
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74 return s
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75
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76 # Partial backport from os.py in Python 3, which only accepts bytes.
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77 # In Python 2, our paths should only ever be bytes, a unicode path
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78 # indicates a bug.
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79 def fsencode(filename):
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80 if isinstance(filename, str):
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81 return filename
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82 else:
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83 raise TypeError(
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84 "expect str, not %s" % type(filename).__name__)
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85
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86 # In Python 2, fsdecode() has a very chance to receive bytes. So it's
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87 # better not to touch Python 2 part as it's already working fine.
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88 def fsdecode(filename):
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89 return filename
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90
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91 osname = os.name
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92 ospathsep = os.pathsep
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93 ossep = os.sep
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94
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95 stringio = io.StringIO
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96 empty = _queue.Empty
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97 queue = _queue.Queue
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98
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99 class _pycompatstub(object):
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100 def __init__(self):
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101 self._aliases = {}
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102
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103 def _registeraliases(self, origin, items):
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104 """Add items that will be populated at the first access"""
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105 items = map(sysstr, items)
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106 self._aliases.update(
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107 (item.replace(sysstr('_'), sysstr('')).lower(), (origin, item))
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108 for item in items)
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109
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110 def __getattr__(self, name):
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111 try:
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112 origin, item = self._aliases[name]
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113 except KeyError:
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114 raise AttributeError(name)
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115 self.__dict__[name] = obj = getattr(origin, item)
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116 return obj
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117
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118 httpserver = _pycompatstub()
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119 urlreq = _pycompatstub()
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120 urlerr = _pycompatstub()
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121 if not ispy3:
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122 import BaseHTTPServer
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123 import CGIHTTPServer
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124 import SimpleHTTPServer
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125 import urllib2
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126 import urllib
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127 urlreq._registeraliases(urllib, (
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128 "addclosehook",
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129 "addinfourl",
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130 "ftpwrapper",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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131 "pathname2url",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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132 "quote",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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133 "splitattr",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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134 "splitpasswd",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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135 "splitport",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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136 "splituser",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
diff changeset
137 "unquote",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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138 "url2pathname",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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139 "urlencode",
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timeless <timeless@mozdev.org>
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140 ))
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141 urlreq._registeraliases(urllib2, (
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timeless <timeless@mozdev.org>
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142 "AbstractHTTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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143 "BaseHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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144 "build_opener",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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145 "FileHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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146 "FTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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147 "HTTPBasicAuthHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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148 "HTTPDigestAuthHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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149 "HTTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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150 "HTTPPasswordMgrWithDefaultRealm",
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timeless <timeless@mozdev.org>
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151 "HTTPSHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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152 "install_opener",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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153 "ProxyHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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154 "Request",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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155 "urlopen",
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timeless <timeless@mozdev.org>
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156 ))
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157 urlerr._registeraliases(urllib2, (
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timeless <timeless@mozdev.org>
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158 "HTTPError",
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timeless <timeless@mozdev.org>
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159 "URLError",
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timeless <timeless@mozdev.org>
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160 ))
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161 httpserver._registeraliases(BaseHTTPServer, (
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162 "HTTPServer",
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163 "BaseHTTPRequestHandler",
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164 ))
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165 httpserver._registeraliases(SimpleHTTPServer, (
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166 "SimpleHTTPRequestHandler",
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167 ))
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168 httpserver._registeraliases(CGIHTTPServer, (
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169 "CGIHTTPRequestHandler",
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170 ))
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timeless <timeless@mozdev.org>
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171
29812
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172 else:
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173 import urllib.request
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174 urlreq._registeraliases(urllib.request, (
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timeless <timeless@mozdev.org>
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175 "AbstractHTTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
diff changeset
176 "addclosehook",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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177 "addinfourl",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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178 "BaseHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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179 "build_opener",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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180 "FileHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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181 "FTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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182 "ftpwrapper",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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183 "HTTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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184 "HTTPSHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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185 "install_opener",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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186 "pathname2url",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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187 "HTTPBasicAuthHandler",
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timeless <timeless@mozdev.org>
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188 "HTTPDigestAuthHandler",
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189 "HTTPPasswordMgrWithDefaultRealm",
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timeless <timeless@mozdev.org>
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190 "ProxyHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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191 "quote",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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192 "Request",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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193 "splitattr",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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194 "splitpasswd",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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195 "splitport",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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196 "splituser",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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197 "unquote",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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198 "url2pathname",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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199 "urlopen",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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200 ))
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timeless <timeless@mozdev.org>
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201 import urllib.error
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202 urlerr._registeraliases(urllib.error, (
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timeless <timeless@mozdev.org>
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203 "HTTPError",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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204 "URLError",
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timeless <timeless@mozdev.org>
parents: 28835
diff changeset
205 ))
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206 import http.server
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207 httpserver._registeraliases(http.server, (
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208 "HTTPServer",
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209 "BaseHTTPRequestHandler",
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Pulkit Goyal <7895pulkit@gmail.com>
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210 "SimpleHTTPRequestHandler",
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Pulkit Goyal <7895pulkit@gmail.com>
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211 "CGIHTTPRequestHandler",
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Pulkit Goyal <7895pulkit@gmail.com>
parents: 29455
diff changeset
212 ))