1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 | #!/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. """ import BaseHTTPServer, sys, urlparse import bisect from gtfsscheduleviewer.marey_graph import MareyGraph import gtfsscheduleviewer import mimetypes import os.path import re import signal import 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, 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)) sample_size = 10 # 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; for trip in trips: if trip['trip_type'] and trip['trip_type'] != '0': has_non_zero_trip_type = True 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(): servicep = None for t in schedule.GetTripList(): if t.route_id == r.route_id: servicep = t.service_period break result.append( (r.route_id, r.route_short_name, r.route_long_name, servicep.service_id) ) 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_routetrips(self, params): """ Get a trip for a route_id (preferablly the next one) """ schedule = self.server.schedule query = params.get('route_id', None).lower() result = [] for t in schedule.GetTripList(): if t.route_id == query: result.append ( (t.GetStartTime(), t.trip_id) ) return sorted(result, key=lambda trip: trip[0]) 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 = [] times = [] for arr,dep,stop in time_stops: stops.append(StopToTuple(stop)) times.append(arr) return [stops, 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)) return points 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_stops(self, params): schedule = self.server.schedule return [StopToTuple(s) for s in schedule.GetStopList()] def handle_json_GET_timingpoints(self, params): schedule = self.server.schedule matches = [] for s in schedule.GetStopList(): if s.stop_code.find("Wj") == -1: matches.append(StopToTuple(s)) return matches 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_stop(self, params): schedule = self.server.schedule query = params.get('stop_id', None).lower() for s in schedule.GetStopList(): if s.stop_id.lower() == query: return StopToTuple(s) return [] 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)) service_period = params.get('service_period', None) time_trips = stop.GetStopTimeTrips(schedule) time_trips.sort() # OPT: use bisect.insort to make this O(N*ln(N)) -> O(N) # Keep the first 15 after param 'time'. # Need make a tuple to find correct bisect point time_trips =< |