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# -*- coding: utf-8 -*-
"""
webpylike
~~~~~~~~~
This module implements web.py like dispatching. What this module does
not implement is a stream system that hooks into sys.stdout like web.py
provides. I consider this bad design.
:copyright: 2007 Pallets
:license: BSD-3-Clause
"""
import re
from werkzeug.exceptions import HTTPException
from werkzeug.exceptions import MethodNotAllowed
from werkzeug.exceptions import NotFound
from werkzeug.exceptions import NotImplemented
from werkzeug.wrappers import BaseRequest
from werkzeug.wrappers import BaseResponse
class Request(BaseRequest):
"""Encapsulates a request."""
class Response(BaseResponse):
"""Encapsulates a response."""
class View(object):
"""Baseclass for our views."""
def __init__(self, app, req):
self.app = app
self.req = req
def GET(self):
raise MethodNotAllowed()
POST = DELETE = PUT = GET
def HEAD(self):
return self.GET()
class WebPyApp(object):
"""
An interface to a web.py like application. It works like the web.run
function in web.py
"""
def __init__(self, urls, views):
self.urls = [
(re.compile("^%s$" % urls[i]), urls[i + 1]) for i in range(0, len(urls), 2)
]
self.views = views
def __call__(self, environ, start_response):
try:
req = Request(environ)
for regex, view in self.urls:
match = regex.match(req.path)
if match is not None:
view = self.views[view](self, req)
if req.method not in ("GET", "HEAD", "POST", "DELETE", "PUT"):
raise NotImplemented() # noqa: F901
resp = getattr(view, req.method)(*match.groups())
break
else:
raise NotFound()
except HTTPException as e:
resp = e
return resp(environ, start_response)
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