Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/hgweb/wsgicgi.py @ 4661:a7e9b6b1adeb
Backed out changeset cfa477946181824f4c769580ebf59710090ba08a
Only printenv was changed, not the actual execution of hooks.
And not setting an empty value might cause problems on platforms
which can't always remove variables from the environment.
author | Thomas Arendsen Hein <thomas@intevation.de> |
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date | Thu, 21 Jun 2007 10:00:59 +0200 |
parents | 7605da1c3b5c |
children | be591b740e0f |
rev | line source |
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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() |