Skip to content
Permalink
Branch: master
Find file Copy path
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
executable file 561 lines (471 sloc) 19.1 KB
#!/usr/bin/python2.5
# Copyright (C) 2007 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
An example application that uses the transitfeed module.
You must provide a Google Maps API key.
"""
from __future__ import print_function
import BaseHTTPServer, sys, urlparse
import bisect
from gtfsscheduleviewer.marey_graph import MareyGraph
import gtfsscheduleviewer
import mimetypes
import os.path
import re
import signal
import json as simplejson
import socket
import time
import transitfeed
from transitfeed import util
import urllib
# By default Windows kills Python with Ctrl+Break. Instead make Ctrl+Break
# raise a KeyboardInterrupt.
if hasattr(signal, 'SIGBREAK'):
signal.signal(signal.SIGBREAK, signal.default_int_handler)
mimetypes.add_type('text/plain', '.vbs')
class ResultEncoder(simplejson.JSONEncoder):
def default(self, obj):
try:
iterable = iter(obj)
except TypeError:
pass
else:
return list(iterable)
return simplejson.JSONEncoder.default(self, obj)
# Code taken from
# http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/425210/index_txt
# An alternate approach is shown at
# http://mail.python.org/pipermail/python-list/2003-July/212751.html
# but it requires multiple threads. A sqlite object can only be used from one
# thread.
class StoppableHTTPServer(BaseHTTPServer.HTTPServer):
def server_bind(self):
BaseHTTPServer.HTTPServer.server_bind(self)
self.socket.settimeout(1)
self._run = True
def get_request(self):
while self._run:
try:
sock, addr = self.socket.accept()
sock.settimeout(None)
return (sock, addr)
except socket.timeout:
pass
def stop(self):
self._run = False
def serve(self):
while self._run:
self.handle_request()
def StopToTuple(stop):
"""Return tuple as expected by javascript function addStopMarkerFromList"""
return (stop.stop_id, stop.stop_name, float(stop.stop_lat),
float(stop.stop_lon), stop.location_type)
class ScheduleRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
def do_GET(self):
scheme, host, path, x, params, fragment = urlparse.urlparse(self.path)
parsed_params = {}
for k in params.split('&'):
k = urllib.unquote(k)
if '=' in k:
k, v = k.split('=', 1)
parsed_params[k] = unicode(v, 'utf8')
else:
parsed_params[k] = ''
if path == '/':
return self.handle_GET_home()
m = re.match(r'/json/([a-z]{1,64})', path)
if m:
handler_name = 'handle_json_GET_%s' % m.group(1)
handler = getattr(self, handler_name, None)
if callable(handler):
return self.handle_json_wrapper_GET(handler, parsed_params)
# Restrict allowable file names to prevent relative path attacks etc
m = re.match(r'/file/([a-z0-9_-]{1,64}\.?[a-z0-9_-]{1,64})$', path)
if m and m.group(1):
try:
f, mime_type = self.OpenFile(m.group(1))
return self.handle_static_file_GET(f, mime_type)
except IOError as e:
print("Error: unable to open %s" % m.group(1))
# Ignore and treat as 404
m = re.match(r'/([a-z]{1,64})', path)
if m:
handler_name = 'handle_GET_%s' % m.group(1)
handler = getattr(self, handler_name, None)
if callable(handler):
return handler(parsed_params)
return self.handle_GET_default(parsed_params, path)
def OpenFile(self, filename):
"""Try to open filename in the static files directory of this server.
Return a tuple (file object, string mime_type) or raise an exception."""
(mime_type, encoding) = mimetypes.guess_type(filename)
assert mime_type
# A crude guess of when we should use binary mode. Without it non-unix
# platforms may corrupt binary files.
if mime_type.startswith('text/'):
mode = 'r'
else:
mode = 'rb'
return open(os.path.join(self.server.file_dir, filename), mode), mime_type
def handle_GET_default(self, parsed_params, path):
self.send_error(404)
def handle_static_file_GET(self, fh, mime_type):
content = fh.read()
self.send_response(200)
self.send_header('Content-Type', mime_type)
self.send_header('Content-Length', str(len(content)))
self.end_headers()
self.wfile.write(content)
def AllowEditMode(self):
return False
def handle_GET_home(self):
schedule = self.server.schedule
(min_lat, min_lon, max_lat, max_lon) = schedule.GetStopBoundingBox()
forbid_editing = ('true', 'false')[self.AllowEditMode()]
agency = ', '.join(a.agency_name for a in schedule.GetAgencyList()).encode('utf-8')
key = self.server.key
host = self.server.host
# A very simple template system. For a fixed set of values replace [xxx]
# with the value of local variable xxx
f, _ = self.OpenFile('index.html')
content = f.read()
for v in ('agency', 'min_lat', 'min_lon', 'max_lat', 'max_lon', 'key',
'host', 'forbid_editing'):
content = content.replace('[%s]' % v, str(locals()[v]))
self.send_response(200)
self.send_header('Content-Type', 'text/html')
self.send_header('Content-Length', str(len(content)))
self.end_headers()
self.wfile.write(content)
def handle_json_GET_routepatterns(self, params):
"""Given a route_id generate a list of patterns of the route. For each
pattern include some basic information and a few sample trips."""
schedule = self.server.schedule
route = schedule.GetRoute(params.get('route', None))
if not route:
self.send_error(404)
return
time = int(params.get('time', 0))
date = params.get('date', "")
sample_size = 3 # For each pattern return the start time for this many trips
pattern_id_trip_dict = route.GetPatternIdTripDict()
patterns = []
for pattern_id, trips in pattern_id_trip_dict.items():
time_stops = trips[0].GetTimeStops()
if not time_stops:
continue
has_non_zero_trip_type = False;
# Iterating over a copy so we can remove from trips inside the loop
trips_with_service = []
for trip in trips:
service_id = trip.service_id
service_period = schedule.GetServicePeriod(service_id)
if date and not service_period.IsActiveOn(date):
continue
trips_with_service.append(trip)
if trip['trip_type'] and trip['trip_type'] != '0':
has_non_zero_trip_type = True
# We're only interested in the trips that do run on the specified date
trips = trips_with_service
name = u'%s to %s, %d stops' % (time_stops[0][2].stop_name, time_stops[-1][2].stop_name, len(time_stops))
transitfeed.SortListOfTripByTime(trips)
num_trips = len(trips)
if num_trips <= sample_size:
start_sample_index = 0
num_after_sample = 0
else:
# Will return sample_size trips that start after the 'time' param.
# Linear search because I couldn't find a built-in way to do a binary
# search with a custom key.
start_sample_index = len(trips)
for i, trip in enumerate(trips):
if trip.GetStartTime() >= time:
start_sample_index = i
break
num_after_sample = num_trips - (start_sample_index + sample_size)
if num_after_sample < 0:
# Less than sample_size trips start after 'time' so return all the
# last sample_size trips.
num_after_sample = 0
start_sample_index = num_trips - sample_size
sample = []
for t in trips[start_sample_index:start_sample_index + sample_size]:
sample.append( (t.GetStartTime(), t.trip_id) )
patterns.append((name, pattern_id, start_sample_index, sample,
num_after_sample, (0,1)[has_non_zero_trip_type]))
patterns.sort()
return patterns
def handle_json_wrapper_GET(self, handler, parsed_params):
"""Call handler and output the return value in JSON."""
schedule = self.server.schedule
result = handler(parsed_params)
content = ResultEncoder().encode(result)
self.send_response(200)
self.send_header('Content-Type', 'text/plain')
self.send_header('Content-Length', str(len(content)))
self.end_headers()
self.wfile.write(content)
def handle_json_GET_routes(self, params):
"""Return a list of all routes."""
schedule = self.server.schedule
result = []
for r in schedule.GetRouteList():
result.append( (r.route_id, r.route_short_name, r.route_long_name) )
result.sort(key = lambda x: x[1:3])
return result
def handle_json_GET_routerow(self, params):
schedule = self.server.schedule
route = schedule.GetRoute(params.get('route', None))
return [transitfeed.Route._FIELD_NAMES, route.GetFieldValuesTuple()]
def handle_json_GET_triprows(self, params):
"""Return a list of rows from the feed file that are related to this
trip."""
schedule = self.server.schedule
try:
trip = schedule.GetTrip(params.get('trip', None))
except KeyError:
# if a non-existent trip is searched for, the return nothing
return
route = schedule.GetRoute(trip.route_id)
trip_row = dict(trip.iteritems())
route_row = dict(route.iteritems())
return [['trips.txt', trip_row], ['routes.txt', route_row]]
def handle_json_GET_tripstoptimes(self, params):
schedule = self.server.schedule
try:
trip = schedule.GetTrip(params.get('trip'))
except KeyError:
# if a non-existent trip is searched for, the return nothing
return
time_stops = trip.GetTimeStops()
stops = []
arrival_times = []
departure_times = []
for arr,dep,stop in time_stops:
stops.append(StopToTuple(stop))
arrival_times.append(arr)
departure_times.append(dep)
return [stops, arrival_times, departure_times]
def handle_json_GET_tripshape(self, params):
schedule = self.server.schedule
try:
trip = schedule.GetTrip(params.get('trip'))
except KeyError:
# if a non-existent trip is searched for, the return nothing
return
points = []
if trip.shape_id:
shape = schedule.GetShape(trip.shape_id)
for (lat, lon, dist) in shape.points:
points.append((lat, lon))
else:
time_stops = trip.GetTimeStops()
for arr,dep,stop in time_stops:
points.append((stop.stop_lat, stop.stop_lon))
route = schedule.GetRoute(trip.route_id)
polyline_data = {'points': points}
if route.route_color:
polyline_data['color'] = '#' + route.route_color
return polyline_data
def handle_json_GET_neareststops(self, params):
"""Return a list of the nearest 'limit' stops to 'lat', 'lon'"""
schedule = self.server.schedule
lat = float(params.get('lat'))
lon = float(params.get('lon'))
limit = int(params.get('limit'))
stops = schedule.GetNearestStops(lat=lat, lon=lon, n=limit)
return [StopToTuple(s) for s in stops]
def handle_json_GET_boundboxstops(self, params):
"""Return a list of up to 'limit' stops within bounding box with 'n','e'
and 's','w' in the NE and SW corners. Does not handle boxes crossing
longitude line 180."""
schedule = self.server.schedule
n = float(params.get('n'))
e = float(params.get('e'))
s = float(params.get('s'))
w = float(params.get('w'))
limit = int(params.get('limit'))
stops = schedule.GetStopsInBoundingBox(north=n, east=e, south=s, west=w, n=limit)
return [StopToTuple(s) for s in stops]
def handle_json_GET_stopsearch(self, params):
schedule = self.server.schedule
query = params.get('q', None).lower()
matches = []
for s in schedule.GetStopList():
if s.stop_id.lower().find(query) != -1 or s.stop_name.lower().find(query) != -1:
matches.append(StopToTuple(s))
return matches
def handle_json_GET_stoptrips(self, params):
"""Given a stop_id and time in seconds since midnight return the next
trips to visit the stop."""
schedule = self.server.schedule
stop = schedule.GetStop(params.get('stop', None))
time = int(params.get('time', 0))
date = params.get('date', "")
time_trips = stop.GetStopTimeTrips(schedule)
time_trips.sort() # OPT: use bisect.insort to make this O(N*ln(N)) -> O(N)
# Keep the first 5 after param 'time'.
# Need make a tuple to find correct bisect point
time_trips = time_trips[bisect.bisect_left(time_trips, (time, 0)):]
time_trips = time_trips[:5]
# TODO: combine times for a route to show next 2 departure times
result = []
for time, (trip, index), tp in time_trips:
service_id = trip.service_id
service_period = schedule.GetServicePeriod(service_id)
if date and not service_period.IsActiveOn(date):
continue
headsign = None
# Find the most recent headsign from the StopTime objects
for stoptime in trip.GetStopTimes()[index::-1]:
if stoptime.stop_headsign:
headsign = stoptime.stop_headsign
break
# If stop_headsign isn't found, look for a trip_headsign
if not headsign:
headsign = trip.trip_headsign
route = schedule.GetRoute(trip.route_id)
trip_name = ''
if route.route_short_name:
trip_name += route.route_short_name
if route.route_long_name:
if len(trip_name):
trip_name += " - "
trip_name += route.route_long_name
if headsign:
trip_name += " (Direction: %s)" % headsign
result.append((time, (trip.trip_id, trip_name, trip.service_id), tp))
return result
def handle_GET_ttablegraph(self,params):
"""Draw a Marey graph in SVG for a pattern (collection of trips in a route
that visit the same sequence of stops)."""
schedule = self.server.schedule
marey = MareyGraph()
trip = schedule.GetTrip(params.get('trip', None))
route = schedule.GetRoute(trip.route_id)
height = int(params.get('height', 300))
if not route:
print('no such route')
self.send_error(404)
return
pattern_id_trip_dict = route.GetPatternIdTripDict()
pattern_id = trip.pattern_id
if pattern_id not in pattern_id_trip_dict:
print('no pattern %s found in %s' % (pattern_id, pattern_id_trip_dict.keys()))
self.send_error(404)
return
triplist = pattern_id_trip_dict[pattern_id]
pattern_start_time = min((t.GetStartTime() for t in triplist))
pattern_end_time = max((t.GetEndTime() for t in triplist))
marey.SetSpan(pattern_start_time,pattern_end_time)
marey.Draw(triplist[0].GetPattern(), triplist, height)
content = marey.Draw()
self.send_response(200)
self.send_header('Content-Type', 'image/svg+xml')
self.send_header('Content-Length', str(len(content)))
self.end_headers()
self.wfile.write(content)
def FindPy2ExeBase():
"""If this is running in py2exe return the install directory else return
None"""
# py2exe puts gtfsscheduleviewer in library.zip. For py2exe setup.py is
# configured to put the data next to library.zip.
windows_ending = gtfsscheduleviewer.__file__.find('\\library.zip\\')
if windows_ending != -1:
return transitfeed.__file__[:windows_ending]
else:
return None
def FindDefaultFileDir():
"""Return the path of the directory containing the static files. By default
the directory is called 'files'. The location depends on where setup.py put
it."""
base = FindPy2ExeBase()
if base:
return os.path.join(base, 'schedule_viewer_files')
else:
# For all other distributions 'files' is in the gtfsscheduleviewer
# directory.
base = os.path.dirname(gtfsscheduleviewer.__file__) # Strip __init__.py
return os.path.join(base, 'files')
def GetDefaultKeyFilePath():
"""In py2exe return absolute path of file in the base directory and in all
other distributions return relative path 'key.txt'"""
windows_base = FindPy2ExeBase()
if windows_base:
return os.path.join(windows_base, 'key.txt')
else:
return 'key.txt'
def main(RequestHandlerClass = ScheduleRequestHandler):
usage = \
'''%prog [options] [<input GTFS.zip>]
Runs a webserver that lets you explore a <input GTFS.zip> in your browser.
If <input GTFS.zip> is omited the filename is read from the console. Dragging
a file into the console may enter the filename.
For more information see
https://github.com/google/transitfeed/wiki/ScheduleViewer
'''
parser = util.OptionParserLongError(
usage=usage, version='%prog '+transitfeed.__version__)
parser.add_option('--feed_filename', '--feed', dest='feed_filename',
help='file name of feed to load')
parser.add_option('--key', dest='key',
help='Google Maps API key or the name '
'of a text file that contains an API key')
parser.add_option('--host', dest='host', help='Host name of Google Maps')
parser.add_option('--port', dest='port', type='int',
help='port on which to listen')
parser.add_option('--file_dir', dest='file_dir',
help='directory containing static files')
parser.add_option('-n', '--noprompt', action='store_false',
dest='manual_entry',
help='disable interactive prompts')
parser.set_defaults(port=8765,
host='maps.google.com',
file_dir=FindDefaultFileDir(),
manual_entry=True)
(options, args) = parser.parse_args()
if not os.path.isfile(os.path.join(options.file_dir, 'index.html')):
print("Can't find index.html with --file_dir=%s" % options.file_dir)
exit(1)
if not options.feed_filename and len(args) == 1:
options.feed_filename = args[0]
if not options.feed_filename and options.manual_entry:
options.feed_filename = raw_input('Enter Feed Location: ').strip('"')
default_key_file = GetDefaultKeyFilePath()
if not options.key and os.path.isfile(default_key_file):
options.key = open(default_key_file).read().strip()
if options.key and os.path.isfile(options.key):
options.key = open(options.key).read().strip()
# This key is registered to gtfs.schedule.viewer@gmail.com
if not options.key:
options.key = 'AIzaSyAZTTRO6RC6LQyKCD3JODhxbClsZl95P9U'
util.CheckVersion(transitfeed.ProblemReporter())
schedule = transitfeed.Schedule(problem_reporter=transitfeed.ProblemReporter())
print('Loading data from feed "%s"...' % options.feed_filename)
print('(this may take a few minutes for larger cities)')
schedule.Load(options.feed_filename)
server = StoppableHTTPServer(server_address=('', options.port),
RequestHandlerClass=RequestHandlerClass)
server.key = options.key
server.schedule = schedule
server.file_dir = options.file_dir
server.host = options.host
server.feed_path = options.feed_filename
print ("To view, point your browser at http://localhost:%d/" %
(server.server_port))
server.serve_forever()
if __name__ == '__main__':
main()
You can’t perform that action at this time.