Mercurial > hg > wordstream
view wordstream/dispatcher.py @ 0:8af3412e907a
initial import of wordstream
author | k0s <k0scist@gmail.com> |
---|---|
date | Fri, 01 Jan 2010 19:35:32 -0500 |
parents | |
children | e21f53582267 |
line wrap: on
line source
""" request dispatcher: data persisting across requests should go here """ import os from handlers import Index, Feed, Eat, ViewCorpus from genshi.template import TemplateLoader from paste.fileapp import FileApp from pkg_resources import resource_filename from webob import Request, Response, exc from wordstream.api import Corpus class Dispatcher(object): ### class level variables defaults = { 'auto_reload': 'False', 'template_dirs': '', 'seed': '' } def __init__(self, **kw): # set instance parameters from kw and defaults for key in self.defaults: setattr(self, key, kw.get(key, self.defaults[key])) self.auto_reload = self.auto_reload.lower() == 'true' self.corpus = Corpus() self.corpus.feed_stuff(*self.seed.split()) # request handlers self.handlers = [ Index, ViewCorpus, Feed, Eat ] # template loader self.template_dirs = self.template_dirs.split() self.template_dirs.append(resource_filename(__name__, 'templates')) self.loader = TemplateLoader(self.template_dirs, auto_reload=self.auto_reload) def __call__(self, environ, start_response): # get a request object request = Request(environ) # get the path path = request.path_info.strip('/').split('/') if path == ['']: path = [] request.environ['path'] = path # match the request to a handler for h in self.handlers: handler = h.match(self, request) if handler is not None: break else: handler = exc.HTTPNotFound # add navigation links to handler [example] if hasattr(handler, 'data'): handler.data.setdefault('links', []) for h in self.handlers: handler.data['links'].append((handler.link(h.handler_path), h.__name__)) # get response res = handler() return res(environ, start_response)