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annotate rhodecode/lib/middleware/pygrack.py @ 2965:d0553004e73d beta

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fixed #623: Lang meta-tag doesn't work with C#/C++
author Marcin Kuzminski <marcin@python-works.com>
date Sat, 27 Oct 2012 00:09:07 +0200
parents f68522e3df79
children e67b2ef07a8e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 import os
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2 import socket
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3 import logging
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4 import subprocess
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5 import traceback
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6
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7 from webob import Request, Response, exc
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8
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9 from rhodecode.lib import subprocessio
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10
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11 log = logging.getLogger(__name__)
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12
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13
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14 class FileWrapper(object):
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15
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16 def __init__(self, fd, content_length):
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17 self.fd = fd
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18 self.content_length = content_length
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19 self.remain = content_length
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20
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21 def read(self, size):
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22 if size <= self.remain:
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23 try:
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24 data = self.fd.read(size)
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25 except socket.error:
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26 raise IOError(self)
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27 self.remain -= size
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28 elif self.remain:
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29 data = self.fd.read(self.remain)
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30 self.remain = 0
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31 else:
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32 data = None
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33 return data
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34
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35 def __repr__(self):
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36 return '<FileWrapper %s len: %s, read: %s>' % (
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37 self.fd, self.content_length, self.content_length - self.remain
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38 )
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40
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41 class GitRepository(object):
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42 git_folder_signature = set(['config', 'head', 'info', 'objects', 'refs'])
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43 commands = ['git-upload-pack', 'git-receive-pack']
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44
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45 def __init__(self, repo_name, content_path, extras):
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46 files = set([f.lower() for f in os.listdir(content_path)])
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47 if not (self.git_folder_signature.intersection(files)
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48 == self.git_folder_signature):
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49 raise OSError('%s missing git signature' % content_path)
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50 self.content_path = content_path
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51 self.valid_accepts = ['application/x-%s-result' %
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52 c for c in self.commands]
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53 self.repo_name = repo_name
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54 self.extras = extras
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55
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56 def _get_fixedpath(self, path):
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57 """
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58 Small fix for repo_path
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59
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60 :param path:
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61 :type path:
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62 """
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63 return path.split(self.repo_name, 1)[-1].strip('/')
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64
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65 def inforefs(self, request, environ):
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66 """
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67 WSGI Response producer for HTTP GET Git Smart
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68 HTTP /info/refs request.
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69 """
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70
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71 git_command = request.GET.get('service')
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72 if git_command not in self.commands:
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73 log.debug('command %s not allowed' % git_command)
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74 return exc.HTTPMethodNotAllowed()
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75
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76 # note to self:
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77 # please, resist the urge to add '\n' to git capture and increment
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78 # line count by 1.
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79 # The code in Git client not only does NOT need '\n', but actually
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80 # blows up if you sprinkle "flush" (0000) as "0001\n".
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81 # It reads binary, per number of bytes specified.
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82 # if you do add '\n' as part of data, count it.
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83 server_advert = '# service=%s' % git_command
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84 packet_len = str(hex(len(server_advert) + 4)[2:].rjust(4, '0')).lower()
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85 try:
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86 out = subprocessio.SubprocessIOChunker(
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87 r'git %s --stateless-rpc --advertise-refs "%s"' % (
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88 git_command[4:], self.content_path),
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89 starting_values=[
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90 packet_len + server_advert + '0000'
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91 ]
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92 )
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93 except EnvironmentError, e:
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94 log.error(traceback.format_exc())
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95 raise exc.HTTPExpectationFailed()
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96 resp = Response()
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97 resp.content_type = 'application/x-%s-advertisement' % str(git_command)
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98 resp.charset = None
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99 resp.app_iter = out
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100 return resp
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101
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102 def backend(self, request, environ):
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103 """
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104 WSGI Response producer for HTTP POST Git Smart HTTP requests.
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105 Reads commands and data from HTTP POST's body.
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106 returns an iterator obj with contents of git command's
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107 response to stdout
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108 """
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109 git_command = self._get_fixedpath(request.path_info)
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110 if git_command not in self.commands:
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111 log.debug('command %s not allowed' % git_command)
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112 return exc.HTTPMethodNotAllowed()
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113
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114 if 'CONTENT_LENGTH' in environ:
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115 inputstream = FileWrapper(environ['wsgi.input'],
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116 request.content_length)
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117 else:
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118 inputstream = environ['wsgi.input']
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119
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120 try:
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121 gitenv = os.environ
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122 from rhodecode.lib.compat import json
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123 gitenv['RHODECODE_EXTRAS'] = json.dumps(self.extras)
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124 # forget all configs
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125 gitenv['GIT_CONFIG_NOGLOBAL'] = '1'
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126 opts = dict(
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127 env=gitenv,
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128 cwd=os.getcwd()
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129 )
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130 cmd = r'git %s --stateless-rpc "%s"' % (git_command[4:],
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131 self.content_path),
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132 log.debug('handling cmd %s' % cmd)
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133 out = subprocessio.SubprocessIOChunker(
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134 cmd,
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135 inputstream=inputstream,
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136 **opts
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137 )
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138 except EnvironmentError, e:
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139 log.error(traceback.format_exc())
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140 raise exc.HTTPExpectationFailed()
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141
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142 if git_command in [u'git-receive-pack']:
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143 # updating refs manually after each push.
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144 # Needed for pre-1.7.0.4 git clients using regular HTTP mode.
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145 cmd = (u'git --git-dir "%s" '
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146 'update-server-info' % self.content_path)
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147 log.debug('handling cmd %s' % cmd)
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148 subprocess.call(cmd, shell=True)
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149
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150 resp = Response()
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151 resp.content_type = 'application/x-%s-result' % git_command.encode('utf8')
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152 resp.charset = None
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153 resp.app_iter = out
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154 return resp
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155
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156 def __call__(self, environ, start_response):
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157 request = Request(environ)
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158 _path = self._get_fixedpath(request.path_info)
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159 if _path.startswith('info/refs'):
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160 app = self.inforefs
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161 elif [a for a in self.valid_accepts if a in request.accept]:
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162 app = self.backend
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163 try:
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164 resp = app(request, environ)
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165 except exc.HTTPException, e:
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166 resp = e
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167 log.error(traceback.format_exc())
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168 except Exception, e:
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169 log.error(traceback.format_exc())
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170 resp = exc.HTTPInternalServerError()
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171 return resp(environ, start_response)
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172
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173
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174 class GitDirectory(object):
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175
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176 def __init__(self, repo_root, repo_name, extras):
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177 repo_location = os.path.join(repo_root, repo_name)
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178 if not os.path.isdir(repo_location):
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179 raise OSError(repo_location)
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180
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181 self.content_path = repo_location
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182 self.repo_name = repo_name
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183 self.repo_location = repo_location
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184 self.extras = extras
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185
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186 def __call__(self, environ, start_response):
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187 content_path = self.content_path
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188 try:
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189 app = GitRepository(self.repo_name, content_path, self.extras)
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190 except (AssertionError, OSError):
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191 content_path = os.path.join(content_path, '.git')
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192 if os.path.isdir(content_path):
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193 app = GitRepository(self.repo_name, content_path, self.extras)
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194 else:
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195 return exc.HTTPNotFound()(environ, start_response)
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196 return app(environ, start_response)
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197
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198
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199 def make_wsgi_app(repo_name, repo_root, extras):
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200 return GitDirectory(repo_root, repo_name, extras)