Mercurial > hg
annotate mercurial/hgweb/wsgicgi.py @ 7008:8fee8ff13d37
use Exception(args)-style raising consistently (py3k compatibility)
author | Peter Ruibal <peter.ruibal@intel.com> |
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date | Mon, 08 Sep 2008 13:07:00 +0200 |
parents | 1ec2d227a521 |
children | ee8af8a4d905 |
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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.setdefault('PATH_INFO', '') |
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20 environ['wsgi.input'] = sys.stdin |
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21 environ['wsgi.errors'] = sys.stderr |
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22 environ['wsgi.version'] = (1, 0) |
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23 environ['wsgi.multithread'] = False |
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24 environ['wsgi.multiprocess'] = True |
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25 environ['wsgi.run_once'] = True |
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26 |
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27 if environ.get('HTTPS','off').lower() in ('on','1','yes'): |
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28 environ['wsgi.url_scheme'] = 'https' |
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29 else: |
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30 environ['wsgi.url_scheme'] = 'http' |
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31 |
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32 headers_set = [] |
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33 headers_sent = [] |
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34 out = sys.stdout |
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35 |
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36 def write(data): |
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37 if not headers_set: |
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38 raise AssertionError("write() before start_response()") |
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39 |
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40 elif not headers_sent: |
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41 # Before the first output, send the stored headers |
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42 status, response_headers = headers_sent[:] = headers_set |
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43 out.write('Status: %s\r\n' % status) |
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44 for header in response_headers: |
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45 out.write('%s: %s\r\n' % header) |
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46 out.write('\r\n') |
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47 |
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48 out.write(data) |
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49 out.flush() |
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50 |
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51 def start_response(status, response_headers, exc_info=None): |
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52 if exc_info: |
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53 try: |
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54 if headers_sent: |
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55 # Re-raise original exception if headers sent |
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56 raise exc_info[0](exc_info[1], exc_info[2]) |
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57 finally: |
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58 exc_info = None # avoid dangling circular ref |
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59 elif headers_set: |
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60 raise AssertionError("Headers already set!") |
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61 |
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62 headers_set[:] = [status, response_headers] |
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63 return write |
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64 |
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65 content = application(environ, start_response) |
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66 for chunk in content: |
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67 write(chunk) |