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annotate roundup/cgi/wsgi_handler.py @ 4587:a2eb4fb3e6d8

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New Chameleon templating engine, engine is now configurable. We now have two configurable templating engines, the old Zope TAL templates (called zopetal in the config) and the new Chameleon (called chameleon in the config). A new config-option "template_engine" under [main] can take these config-options, the default is zopetal. Thanks to Cheer Xiao for the idea of making this configurable *and* for the actual implementation! Cheer Xiao commit log: - The original TAL engine ported from Zope is thereafter referred to as "zopetal", in speech and in code - A new option "template_engine" under [main] introduced - Zopetal-specific code stripped from cgi/templating.py to form the new cgi/engine_zopetal.py - Interface to Chameleon in cgi/engine_chameleon.py - Engines are supposed to provide a Templates class that mimics the behavior of the old cgi.templating.Templates. The Templates class is preferably subclassed from cgi.templating.TemplatesBase. - New function cgi.templating.get_templates to get the appropriate engine's Templates instance according to the engine name
author Ralf Schlatterbeck <rsc@runtux.com>
date Thu, 23 Feb 2012 18:10:03 +0100
parents 7aa72c31464d
children 92757447dcf0 35ea9b1efc14 ab37c1705dbf
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1 # WSGI interface for Roundup Issue Tracker
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2 #
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3 # This module is free software, you may redistribute it
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4 # and/or modify under the same terms as Python.
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5 #
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6
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7 import os
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8 import cgi
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9 import weakref
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10
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11 import roundup.instance
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12 from roundup.cgi import TranslationService
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13 from BaseHTTPServer import BaseHTTPRequestHandler, DEFAULT_ERROR_MESSAGE
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15
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16 class Writer(object):
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17 '''Perform a start_response if need be when we start writing.'''
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18 def __init__(self, request):
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19 self.request = request #weakref.ref(request)
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20 def write(self, data):
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21 f = self.request.get_wfile()
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22 self.write = f
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23 return f(data)
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24
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25 class RequestDispatcher(object):
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26 def __init__(self, home, debug=False, timing=False, lang=None):
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27 assert os.path.isdir(home), '%r is not a directory'%(home,)
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28 self.home = home
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29 self.debug = debug
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30 self.timing = timing
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31 if lang:
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32 self.translator = TranslationService.get_translation(lang,
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33 tracker_home=home)
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34 else:
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35 self.translator = None
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36
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37 def __call__(self, environ, start_response):
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38 """Initialize with `apache.Request` object"""
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39 self.environ = environ
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40 request = RequestDispatcher(self.home, self.debug, self.timing)
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41 request.__start_response = start_response
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42
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43 request.wfile = Writer(request)
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44 request.__wfile = None
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46 if environ ['REQUEST_METHOD'] == 'OPTIONS':
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47 code = 501
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48 message, explain = BaseHTTPRequestHandler.responses[code]
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49 request.start_response([('Content-Type', 'text/html'),
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50 ('Connection', 'close')], code)
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51 request.wfile.write(DEFAULT_ERROR_MESSAGE % locals())
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52 return []
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53
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54 tracker = roundup.instance.open(self.home, not self.debug)
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55
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56 # need to strip the leading '/'
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57 environ["PATH_INFO"] = environ["PATH_INFO"][1:]
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58 if request.timing:
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59 environ["CGI_SHOW_TIMING"] = request.timing
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60
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61 form = cgi.FieldStorage(fp=environ['wsgi.input'], environ=environ)
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62
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63 client = tracker.Client(tracker, request, environ, form,
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64 request.translator)
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65 try:
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66 client.main()
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67 except roundup.cgi.client.NotFound:
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68 request.start_response([('Content-Type', 'text/html')], 404)
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69 request.wfile.write('Not found: %s'%client.path)
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70
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71 # all body data has been written using wfile
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72 return []
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73
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74 def start_response(self, headers, response_code):
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75 """Set HTTP response code"""
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76 message, explain = BaseHTTPRequestHandler.responses[response_code]
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77 self.__wfile = self.__start_response('%d %s'%(response_code,
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78 message), headers)
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79
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80 def get_wfile(self):
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81 if self.__wfile is None:
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82 raise ValueError, 'start_response() not called'
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83 return self.__wfile
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84
Roundup Issue Tracker: http://roundup-tracker.org/