Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/hgweb/wsgicgi.py @ 4797:d00ca99bc54e

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convert svn: minor improvement to tag detection. The better way is probably to list the latest tags directory and look up the last log message for each entry. This is surprisingly annoying to do.
author Brendan Cully <brendan@kublai.com>
date Tue, 03 Jul 2007 20:22:39 -0700
parents 7605da1c3b5c
children be591b740e0f
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1 # hgweb/wsgicgi.py - CGI->WSGI translator
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2 #
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3 # Copyright 2006 Eric Hopper <hopper@omnifarious.org>
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4 #
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5 # This software may be used and distributed according to the terms
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6 # of the GNU General Public License, incorporated herein by reference.
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7 #
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8 # This was originally copied from the public domain code at
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9 # http://www.python.org/dev/peps/pep-0333/#the-server-gateway-side
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10
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11 import os, sys
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12 from mercurial import util
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13
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14 def launch(application):
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15 util.set_binary(sys.stdin)
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16 util.set_binary(sys.stdout)
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17
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18 environ = dict(os.environ.items())
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19 environ['wsgi.input'] = sys.stdin
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20 environ['wsgi.errors'] = sys.stderr
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21 environ['wsgi.version'] = (1, 0)
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22 environ['wsgi.multithread'] = False
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23 environ['wsgi.multiprocess'] = True
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24 environ['wsgi.run_once'] = True
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25
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26 if environ.get('HTTPS','off') in ('on','1'):
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27 environ['wsgi.url_scheme'] = 'https'
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28 else:
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29 environ['wsgi.url_scheme'] = 'http'
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30
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31 headers_set = []
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32 headers_sent = []
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33 out = sys.stdout
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34
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35 def write(data):
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36 if not headers_set:
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37 raise AssertionError("write() before start_response()")
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38
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39 elif not headers_sent:
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40 # Before the first output, send the stored headers
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41 status, response_headers = headers_sent[:] = headers_set
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42 out.write('Status: %s\r\n' % status)
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43 for header in response_headers:
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44 out.write('%s: %s\r\n' % header)
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45 out.write('\r\n')
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46
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47 out.write(data)
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48 out.flush()
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49
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50 def start_response(status, response_headers, exc_info=None):
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51 if exc_info:
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52 try:
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53 if headers_sent:
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54 # Re-raise original exception if headers sent
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55 raise exc_info[0], exc_info[1], exc_info[2]
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56 finally:
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57 exc_info = None # avoid dangling circular ref
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58 elif headers_set:
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59 raise AssertionError("Headers already set!")
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60
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61 headers_set[:] = [status, response_headers]
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62 return write
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63
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64 result = application(environ, start_response)
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65 try:
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66 for data in result:
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67 if data: # don't send headers until body appears
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68 write(data)
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69 if not headers_sent:
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70 write('') # send headers now if body was empty
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71 finally:
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72 if hasattr(result,'close'):
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73 result.close()