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annotate mercurial/urllibcompat.py @ 48875:6000f5b25c9b

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py2: remove simple from __future__ statements These were needed for Python 2 support. Now that our linter no longer mandates these, we can start deleting them. Differential Revision: https://phab.mercurial-scm.org/D12254
author Gregory Szorc <gregory.szorc@gmail.com>
date Thu, 03 Mar 2022 17:34:00 +0100
parents 521ac0d7047f
children 4286ec1d9842
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # urllibcompat.py - adapters to ease using urllib2 on Py2 and urllib on Py3
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2 #
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3 # Copyright 2017 Google, Inc.
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 from .pycompat import getattr
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9 from . import pycompat
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10
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11 _sysstr = pycompat.sysstr
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12
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13
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14 class _pycompatstub(object):
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15 def __init__(self):
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16 self._aliases = {}
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17
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18 def _registeraliases(self, origin, items):
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19 """Add items that will be populated at the first access"""
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20 items = map(_sysstr, items)
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21 self._aliases.update(
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22 (item.replace('_', '').lower(), (origin, item)) for item in items
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23 )
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24
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25 def _registeralias(self, origin, attr, name):
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26 """Alias ``origin``.``attr`` as ``name``"""
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27 self._aliases[_sysstr(name)] = (origin, _sysstr(attr))
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28
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29 def __getattr__(self, name):
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30 try:
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31 origin, item = self._aliases[name]
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32 except KeyError:
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33 raise AttributeError(name)
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34 self.__dict__[name] = obj = getattr(origin, item)
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35 return obj
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36
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37
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38 httpserver = _pycompatstub()
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39 urlreq = _pycompatstub()
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40 urlerr = _pycompatstub()
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41
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42 if pycompat.ispy3:
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43 import urllib.parse
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44
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45 urlreq._registeraliases(
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46 urllib.parse,
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47 (
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48 b"splitattr",
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49 b"splitpasswd",
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50 b"splitport",
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51 b"splituser",
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52 b"urlparse",
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53 b"urlunparse",
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54 ),
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55 )
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56 urlreq._registeralias(urllib.parse, b"parse_qs", b"parseqs")
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57 urlreq._registeralias(urllib.parse, b"parse_qsl", b"parseqsl")
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58 urlreq._registeralias(urllib.parse, b"unquote_to_bytes", b"unquote")
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59 import urllib.request
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60
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61 urlreq._registeraliases(
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62 urllib.request,
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63 (
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64 b"AbstractHTTPHandler",
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65 b"BaseHandler",
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66 b"build_opener",
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67 b"FileHandler",
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68 b"FTPHandler",
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69 b"ftpwrapper",
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70 b"HTTPHandler",
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71 b"HTTPSHandler",
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72 b"install_opener",
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73 b"pathname2url",
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74 b"HTTPBasicAuthHandler",
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75 b"HTTPDigestAuthHandler",
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76 b"HTTPPasswordMgrWithDefaultRealm",
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77 b"ProxyHandler",
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78 b"Request",
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79 b"url2pathname",
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80 b"urlopen",
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81 ),
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82 )
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83 import urllib.response
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84
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85 urlreq._registeraliases(
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86 urllib.response,
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87 (
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88 b"addclosehook",
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89 b"addinfourl",
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90 ),
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91 )
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92 import urllib.error
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93
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94 urlerr._registeraliases(
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95 urllib.error,
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96 (
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97 b"HTTPError",
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98 b"URLError",
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99 ),
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100 )
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101 import http.server
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102
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103 httpserver._registeraliases(
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104 http.server,
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105 (
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106 b"HTTPServer",
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107 b"BaseHTTPRequestHandler",
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108 b"SimpleHTTPRequestHandler",
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109 b"CGIHTTPRequestHandler",
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110 ),
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111 )
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112
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113 # urllib.parse.quote() accepts both str and bytes, decodes bytes
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114 # (if necessary), and returns str. This is wonky. We provide a custom
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115 # implementation that only accepts bytes and emits bytes.
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116 def quote(s, safe='/'):
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117 # bytestr has an __iter__ that emits characters. quote_from_bytes()
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118 # does an iteration and expects ints. We coerce to bytes to appease it.
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119 if isinstance(s, pycompat.bytestr):
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120 s = bytes(s)
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121 s = urllib.parse.quote_from_bytes(s, safe=safe)
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122 return s.encode('ascii', 'strict')
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123
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124 # urllib.parse.urlencode() returns str. We use this function to make
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125 # sure we return bytes.
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126 def urlencode(query, doseq=False):
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127 s = urllib.parse.urlencode(query, doseq=doseq)
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128 return s.encode('ascii')
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129
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130 urlreq.quote = quote
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131 urlreq.urlencode = urlencode
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132
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133 def getfullurl(req):
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134 return req.full_url
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135
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136 def gethost(req):
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137 return req.host
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138
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139 def getselector(req):
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140 return req.selector
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141
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142 def getdata(req):
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143 return req.data
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144
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145 def hasdata(req):
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146 return req.data is not None
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147
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148
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149 else:
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150 # pytype: disable=import-error
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151 import BaseHTTPServer
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152 import CGIHTTPServer
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153 import SimpleHTTPServer
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154 import urllib2
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155 import urllib
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156 import urlparse
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157
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158 # pytype: enable=import-error
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159
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160 urlreq._registeraliases(
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161 urllib,
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162 (
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163 b"addclosehook",
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164 b"addinfourl",
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165 b"ftpwrapper",
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166 b"pathname2url",
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167 b"quote",
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168 b"splitattr",
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169 b"splitpasswd",
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170 b"splitport",
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171 b"splituser",
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172 b"unquote",
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173 b"url2pathname",
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174 b"urlencode",
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175 ),
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176 )
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177 urlreq._registeraliases(
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178 urllib2,
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179 (
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180 b"AbstractHTTPHandler",
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181 b"BaseHandler",
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182 b"build_opener",
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183 b"FileHandler",
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184 b"FTPHandler",
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185 b"HTTPBasicAuthHandler",
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186 b"HTTPDigestAuthHandler",
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187 b"HTTPHandler",
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188 b"HTTPPasswordMgrWithDefaultRealm",
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189 b"HTTPSHandler",
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190 b"install_opener",
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191 b"ProxyHandler",
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192 b"Request",
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193 b"urlopen",
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194 ),
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195 )
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196 urlreq._registeraliases(
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197 urlparse,
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198 (
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199 b"urlparse",
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200 b"urlunparse",
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201 ),
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202 )
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203 urlreq._registeralias(urlparse, b"parse_qs", b"parseqs")
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204 urlreq._registeralias(urlparse, b"parse_qsl", b"parseqsl")
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205 urlerr._registeraliases(
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206 urllib2,
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207 (
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208 b"HTTPError",
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209 b"URLError",
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210 ),
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211 )
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212 httpserver._registeraliases(
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213 BaseHTTPServer,
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214 (
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215 b"HTTPServer",
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216 b"BaseHTTPRequestHandler",
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217 ),
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218 )
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219 httpserver._registeraliases(
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220 SimpleHTTPServer, (b"SimpleHTTPRequestHandler",)
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221 )
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222 httpserver._registeraliases(CGIHTTPServer, (b"CGIHTTPRequestHandler",))
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223
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224 def gethost(req):
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225 return req.get_host()
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226
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227 def getselector(req):
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228 return req.get_selector()
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229
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230 def getfullurl(req):
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231 return req.get_full_url()
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232
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233 def getdata(req):
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234 return req.get_data()
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235
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236 def hasdata(req):
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237 return req.has_data()