Source Code for Module turbogears.dispatchers

 1  """Standard TurboGears request dispatchers for CherryPy.""" 
 2  
 
 3  __all__ = ['VirtualPathDispatcher'] 
 4  
 
 5  from cherrypy import NotFound, dispatch, request 
 6  
 
 7  
 
 8 -class VirtualPathDispatcher(object): 
 9      """Dispatcher that makes CherryPy ignorant of a URL root path.
 
10  
 
11      That is, you can mount your app so the URI "/users/~rdel/myapp/" maps to
 
12      the root object "/".
 
13  
 
14      Note that this can not be done by a hook since they are run too late.
 
15  
 
16      """ 
17  
 
18 -    def __init__(self, next_dispatcher=None, webpath=''): 
19          self.next_dispatcher = next_dispatcher or dispatch.Dispatcher() 
20          webpath = webpath.strip('/') 
21          if webpath: 
22              webpath = '/' + webpath 
23          self.webpath = webpath 
24  
 
25 -    def __call__(self, path_info): 
26          """Determine the relevant path info by stripping off prefixes.
 
27  
 
28          Strips webpath and request.script_name from request.path_info.
 
29  
 
30          """ 
31          webpath = self.webpath 
32          try: 
33              webpath += request.script_name.rstrip('/') 
34          except AttributeError: 
35              pass 
36          if webpath: 
37              try: 
38                  if path_info.startswith(webpath + '/'): 
39                      request.path_info = path_info = path_info[len(webpath):] 
40                  else: 
41                      if not request.prev and not request.wsgi_environ[
 
42                              'HTTP_X_FORWARDED_SERVER']: 
43                          # check for webpath only if not forwarded
 
44                          raise KeyError 
45              except (AttributeError, KeyError): 
46                  request.handler = NotFound() 
47              else: 
48                  request.script_name = webpath 
49          return self.next_dispatcher(path_info) 
50