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# -*- coding: utf-8 -*-
import requests
import datetime
from bs4 import BeautifulSoup
from bvggrabber.api import QueryApi, Departure, Response, timeformat
from bvggrabber.utils.format import dateformat, int2bin
SCHEDULED_API_ENDPOINT = 'http://mobil.bvg.de/Fahrinfo/bin/stboard.bin/dox'
class Vehicle():
S = 64
U = 32
TRAM = 16
BUS = 8
FERRY = 4
RB = 2
IC = 1
_ALL = 127
class ScheduledDepartureQueryApi(QueryApi):
def __init__(self, station, vehicles=Vehicle._ALL, limit=5):
""":param Vehicle vehicles: a bitmask described by :class:`Vehicle`"""
super(ScheduledDepartureQueryApi, self).__init__()
if isinstance(station, str):
self.station_enc = station.encode('iso-8859-1')
elif isinstance(station, bytes):
self.station_enc = station
else:
raise ValueError("Invalid type for station")
self.station = station
self.vehicles = int2bin(vehicles, 7)
self.limit = limit
def call(self):
params = {'input': self.station_enc,
'time': timeformat(datetime.datetime.now()),
'date': dateformat(datetime.datetime.now()),
'productsFilter': self.vehicles,
'maxJourneys': self.limit,
'start': 'yes'}
response = requests.get(SCHEDULED_API_ENDPOINT, params=params)
if response.ok:
soup = BeautifulSoup(response.text)
if soup.find('span', 'error'):
# The station we are looking for is ambiguous or does not exist
stations = soup.find('span', 'select').find_all('a')
if stations:
# The station is ambiguous
stationlist = [s.text.strip() for s in stations]
return Response(False, stationlist)
else:
# The station does not exist
return Response(False, [])
else:
# The station seems to exist
tbody = soup.find('tbody')
if tbody is None:
return Response(True, self.station, [])
rows = tbody.find_all('tr')
departures = []
for row in rows:
tds = row.find_all('td')
dep = Departure(start=self.station,
end=tds[2].text.strip(),
when=tds[0].text.strip(),
line=tds[1].text.strip())
departures.append(dep)
return Response(True, self.station, departures)
else:
try:
response.raise_for_status()
except requests.RequestException as e:
return Response(False, error=e)
else:
return Response(False,
error=Exception("An unknown error occured"))
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