#!/usr/bin/env python
"""
Seshat
Web App/API framework built on top of gevent
route table
For more information, see: https://github.com/JoshAshby/
http://xkcd.com/353/
Josh Ashby
2014
http://joshashby.com
joshuaashby@joshashby.com
"""
from route_containers import RouteContainer
[docs]class RouteTable(object):
def __init__(self):
self._data = {}
[docs] def add_route(self, r_container):
"""
Adds the given route container to the route table.
:param r_container: The route container which contains the url and controller for a route.
:type r_container: :py:class:`.RouteContainer`
"""
assert isinstance(r_container, RouteContainer)
self._data[r_container.url] = r_container
def get(self, request):
"""
Attempts to find the closest match to the given url.
Its messy but it gets the job done. mostly well. not sure on
the amount of processing time it has or hasn't saved however,
but it doesn't use regex... :/
:parsed_url: urlparse.ParseResult
"""
parsed_url = request.url
obj = None
extended = ""
base = None
orig_path = parsed_url.path.rstrip("/")
if not orig_path:
base = "/"
else:
if orig_path in self._data:
base = orig_path
else:
found = False
path = orig_path
while not found:
path_parts = path.rsplit("/", 1)
base = path_parts[0]
if base in self._data:
found = True
extended = orig_path[len(base)+1:]
else:
path = path_parts[0]
if not path:
base = None
found = True
if base is not None:
request._post_route(extended)
name = base
if request.command:
tmp = "/".join([base, request.command])
if tmp in self._data:
name = tmp
elif request.id:
tmp = "/".join([base, "view"])
if tmp in self._data:
name = tmp
obj = self._data[name].controller
return obj
def __repr__(self):
routes = ""
routes_template = "\t{key}:\n\t\t{value}\n"
for route in self._data:
route = routes_template.format(key=route, value=self._data[route])
routes = ''.join([routes, route])
string = "< RouteTable @ {id} Table:\n{table}\n >"
string = string.format(**{
"id": id(self),
"table": routes
})
return string
urls = RouteTable()