Mercurial > cpython-lru_cache-weakref

annotate Lib/SimpleHTTPServer.py @ 49955:878d40468c4e legacy-trunk

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Issue #4384: Added logging integration with warnings module using captureWarnings(). This change includes a NullHandler which does nothing; it will be of use to library developers who want to avoid the "No handlers could be found for logger XXX" message which can appear if the library user doesn't configure logging.
author Vinay Sajip <vinay_sajip@yahoo.co.uk>
date Wed, 03 Dec 2008 23:22:58 +0000
parents 0c62a279e4da
children 8cdb95cf096e
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1 """Simple HTTP Server.
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2
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3 This module builds on BaseHTTPServer by implementing the standard GET
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4 and HEAD requests in a fairly straightforward manner.
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5
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6 """
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7
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8
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9 __version__ = "0.6"
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10
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11 __all__ = ["SimpleHTTPRequestHandler"]
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12
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13 import os
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14 import posixpath
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15 import BaseHTTPServer
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16 import urllib
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17 import cgi
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18 import shutil
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19 import mimetypes
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20 try:
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21 from cStringIO import StringIO
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22 except ImportError:
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23 from StringIO import StringIO
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24
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25
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26 class SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
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27
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28 """Simple HTTP request handler with GET and HEAD commands.
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29
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30 This serves files from the current directory and any of its
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31 subdirectories. The MIME type for files is determined by
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32 calling the .guess_type() method.
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33
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34 The GET and HEAD requests are identical except that the HEAD
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35 request omits the actual contents of the file.
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36
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37 """
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38
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39 server_version = "SimpleHTTP/" + __version__
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40
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41 def do_GET(self):
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42 """Serve a GET request."""
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43 f = self.send_head()
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44 if f:
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45 self.copyfile(f, self.wfile)
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46 f.close()
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47
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48 def do_HEAD(self):
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49 """Serve a HEAD request."""
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50 f = self.send_head()
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51 if f:
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52 f.close()
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53
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54 def send_head(self):
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55 """Common code for GET and HEAD commands.
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56
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57 This sends the response code and MIME headers.
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58
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59 Return value is either a file object (which has to be copied
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60 to the outputfile by the caller unless the command was HEAD,
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61 and must be closed by the caller under all circumstances), or
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62 None, in which case the caller has nothing further to do.
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63
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64 """
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65 path = self.translate_path(self.path)
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66 f = None
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67 if os.path.isdir(path):
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68 if not self.path.endswith('/'):
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69 # redirect browser - doing basically what apache does
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70 self.send_response(301)
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71 self.send_header("Location", self.path + "/")
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72 self.end_headers()
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73 return None
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74 for index in "index.html", "index.htm":
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75 index = os.path.join(path, index)
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76 if os.path.exists(index):
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77 path = index
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78 break
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79 else:
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80 return self.list_directory(path)
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81 ctype = self.guess_type(path)
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82 try:
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83 # Always read in binary mode. Opening files in text mode may cause
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84 # newline translations, making the actual size of the content
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85 # transmitted *less* than the content-length!
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86 f = open(path, 'rb')
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87 except IOError:
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88 self.send_error(404, "File not found")
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89 return None
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90 self.send_response(200)
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91 self.send_header("Content-type", ctype)
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92 fs = os.fstat(f.fileno())
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93 self.send_header("Content-Length", str(fs[6]))
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94 self.send_header("Last-Modified", self.date_time_string(fs.st_mtime))
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95 self.end_headers()
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96 return f
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97
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98 def list_directory(self, path):
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99 """Helper to produce a directory listing (absent index.html).
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100
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101 Return value is either a file object, or None (indicating an
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102 error). In either case, the headers are sent, making the
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103 interface the same as for send_head().
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104
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105 """
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106 try:
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107 list = os.listdir(path)
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108 except os.error:
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109 self.send_error(404, "No permission to list directory")
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110 return None
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111 list.sort(key=lambda a: a.lower())
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112 f = StringIO()
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113 displaypath = cgi.escape(urllib.unquote(self.path))
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114 f.write('<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">')
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115 f.write("<html>\n<title>Directory listing for %s</title>\n" % displaypath)
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116 f.write("<body>\n<h2>Directory listing for %s</h2>\n" % displaypath)
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117 f.write("<hr>\n<ul>\n")
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118 for name in list:
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119 fullname = os.path.join(path, name)
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120 displayname = linkname = name
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121 # Append / for directories or @ for symbolic links
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122 if os.path.isdir(fullname):
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123 displayname = name + "/"
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124 linkname = name + "/"
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125 if os.path.islink(fullname):
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126 displayname = name + "@"
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127 # Note: a link to a directory displays with @ and links with /
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128 f.write('<li><a href="%s">%s</a>\n'
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129 % (urllib.quote(linkname), cgi.escape(displayname)))
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130 f.write("</ul>\n<hr>\n</body>\n</html>\n")
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131 length = f.tell()
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132 f.seek(0)
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133 self.send_response(200)
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134 self.send_header("Content-type", "text/html")
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135 self.send_header("Content-Length", str(length))
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136 self.end_headers()
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137 return f
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138
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139 def translate_path(self, path):
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140 """Translate a /-separated PATH to the local filename syntax.
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141
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142 Components that mean special things to the local file system
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143 (e.g. drive or directory names) are ignored. (XXX They should
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144 probably be diagnosed.)
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145
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146 """
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147 # abandon query parameters
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148 path = path.split('?',1)[0]
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149 path = path.split('#',1)[0]
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150 path = posixpath.normpath(urllib.unquote(path))
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151 words = path.split('/')
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152 words = filter(None, words)
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153 path = os.getcwd()
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154 for word in words:
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155 drive, word = os.path.splitdrive(word)
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156 head, word = os.path.split(word)
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157 if word in (os.curdir, os.pardir): continue
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158 path = os.path.join(path, word)
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159 return path
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160
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161 def copyfile(self, source, outputfile):
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162 """Copy all data between two file objects.
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163
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164 The SOURCE argument is a file object open for reading
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165 (or anything with a read() method) and the DESTINATION
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166 argument is a file object open for writing (or
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167 anything with a write() method).
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168
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169 The only reason for overriding this would be to change
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170 the block size or perhaps to replace newlines by CRLF
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171 -- note however that this the default server uses this
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172 to copy binary data as well.
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173
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174 """
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175 shutil.copyfileobj(source, outputfile)
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176
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177 def guess_type(self, path):
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178 """Guess the type of a file.
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179
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180 Argument is a PATH (a filename).
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181
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182 Return value is a string of the form type/subtype,
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183 usable for a MIME Content-type header.
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184
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185 The default implementation looks the file's extension
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186 up in the table self.extensions_map, using application/octet-stream
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187 as a default; however it would be permissible (if
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188 slow) to look inside the data to make a better guess.
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189
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190 """
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191
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192 base, ext = posixpath.splitext(path)
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193 if ext in self.extensions_map:
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194 return self.extensions_map[ext]
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195 ext = ext.lower()
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196 if ext in self.extensions_map:
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197 return self.extensions_map[ext]
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198 else:
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199 return self.extensions_map['']
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200
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201 if not mimetypes.inited:
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202 mimetypes.init() # try to read system mime.types
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203 extensions_map = mimetypes.types_map.copy()
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204 extensions_map.update({
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205 '': 'application/octet-stream', # Default
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206 '.py': 'text/plain',
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207 '.c': 'text/plain',
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208 '.h': 'text/plain',
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209 })
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210
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211
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212 def test(HandlerClass = SimpleHTTPRequestHandler,
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213 ServerClass = BaseHTTPServer.HTTPServer):
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214 BaseHTTPServer.test(HandlerClass, ServerClass)
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215
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216
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217 if __name__ == '__main__':
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218 test()