# -*- coding: utf-8 -*-
#
# Copyright (C) 2014-2015 Thomas Amland
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from __future__ import print_function
import re
import sys
try:
from urlparse import urlsplit, parse_qs
from urllib import urlencode
except ImportError:
from urllib.parse import urlsplit, parse_qs, urlencode
try:
import xbmc
import xbmcaddon
_addon_id = xbmcaddon.Addon().getAddonInfo('id')
def log(msg):
msg = "[%s][routing] %s" % (_addon_id, msg)
xbmc.log(msg, level=xbmc.LOGDEBUG)
except ImportError:
def log(msg):
print(msg, file=sys.stderr)
class RoutingError(Exception):
pass
class Plugin(object):
"""
:ivar handle: The plugin handle from kodi
:type handle: int
:ivar args: The parsed query string.
:type args: dict of byte strings
"""
def __init__(self, base_url=None):
self._rules = {} # function to list of rules
self.handle = -1
#self.handle = int(sys.argv[1]) if sys.argv[1].isdigit() else -1
self.args = {}
self.base_url = base_url
if self.base_url is None:
self.base_url = "plugin://" + xbmcaddon.Addon().getAddonInfo('id')
def route_for(self, path):
"""
Returns the view function for path.
:type path: byte string.
"""
if path.startswith(self.base_url):
path = path.split(self.base_url, 1)[1]
for view_fun, rules in self._rules.items():
for rule in rules:
if rule.match(path) is not None:
return view_fun
return None
def url_for(self, func, *args, **kwargs):
"""
Construct and returns an URL for view function with give arguments.
"""
if func in self._rules:
for rule in self._rules[func]:
path = rule.make_path(*args, **kwargs)
if path is not None:
return self.url_for_path(path)
raise RoutingError("No known paths to '{0}' with args {1} and "
"kwargs {2}".format(func.__name__, args, kwargs))
def url_for_path(self, path):
"""
Returns the complete URL for a path.
"""
path = path if path.startswith('/') else '/' + path
return self.base_url + path
def route(self, pattern):
""" Register a route. """
def decorator(func):
self.add_route(func, pattern)
return func
return decorator
def add_route(self, func, pattern):
""" Register a route. """
rule = UrlRule(pattern)
if func not in self._rules:
self._rules[func] = []
self._rules[func].append(rule)
def run(self, argv=sys.argv):
if len(argv) > 2:
self.args = parse_qs(argv[2].lstrip(b'?'))
path = urlsplit(argv[0]).path or '/'
self._dispatch(path)
def redirect(self, path):
self._dispatch(path)
def _dispatch(self, path):
for view_func, rules in self._rules.items():
for rule in rules:
kwargs = rule.match(path)
if kwargs is not None:
log("Dispatching to '%s', args: %s" % (view_func.__name__, kwargs))
view_func(**kwargs)
return
raise RoutingError('No route to path "%s"' % path)
class UrlRule(object):
def __init__(self, pattern):
kw_pattern = r'<(?:[^:]+:)?([A-z]+)>'
self._pattern = re.sub(kw_pattern, '{\\1}', pattern)
self._keywords = re.findall(kw_pattern, pattern)
p = re.sub('<([A-z]+)>', '<string:\\1>', pattern)
p = re.sub('<string:([A-z]+)>', '(?P<\\1>[^/]+?)', p)
p = re.sub('<path:([A-z]+)>', '(?P<\\1>.*)', p)
self._compiled_pattern = p
self._regex = re.compile('^' + p + '$')
def match(self, path):
"""
Check if path matches this rule. Returns a dictionary of the extracted
arguments if match, otherwise None.
"""
# match = self._regex.search(urlsplit(path).path)
match = self._regex.search(path)
return match.groupdict() if match else None
def make_path(self, *args, **kwargs):
"""Construct a path from arguments."""
if args and kwargs:
return None # can't use both args and kwargs
if args:
# Replace the named groups %s and format
try:
return re.sub(r'{[A-z]+}', r'%s', self._pattern) % args
except TypeError:
return None
# We need to find the keys from kwargs that occur in our pattern.
# Unknown keys are pushed to the query string.
url_kwargs = dict(((k, v) for k, v in kwargs.items() if k in self._keywords))
qs_kwargs = dict(((k, v) for k, v in kwargs.items() if k not in self._keywords))
query = '?' + urlencode(qs_kwargs) if qs_kwargs else ''
try:
return self._pattern.format(**url_kwargs) + query
except KeyError:
return None
def __str__(self):
return b"Rule(pattern=%s, keywords=%s)" % (self._pattern, self._keywords)