├── .github └── workflows │ └── ci.yml ├── .gitignore ├── .npmignore ├── .travis.yml ├── README.md ├── bin └── gtfsmerge.sh ├── logo.png ├── package-lock.json ├── package.json ├── src ├── Container.ts ├── csv │ ├── CSVStream.spec.ts │ └── CSVStream.ts ├── gtfs │ ├── GTFS.ts │ ├── GTFSLoader.spec.ts │ ├── GTFSLoader.ts │ ├── GTFSOutput.ts │ ├── GTFSOutputFactory.spec.ts │ ├── GTFSOutputFactory.ts │ ├── MergeCommand.ts │ ├── calendar │ │ ├── CalendarFactory.spec.ts │ │ ├── CalendarFactory.ts │ │ ├── gftsDateUtils.spec.ts │ │ └── gtfsDateUtils.ts │ └── merger │ │ ├── CalendarMerger.ts │ │ ├── GenericMerger.ts │ │ ├── RouteMerger.ts │ │ ├── StopTimesMerger.ts │ │ ├── StopsAndTransfersMerger.ts │ │ └── TripsMerger.ts ├── index.ts ├── sequence │ ├── MemoizedSequence.spec.ts │ ├── MemoizedSequence.ts │ ├── Sequence.spec.ts │ └── Sequence.ts └── zip │ └── ZipOutput.ts ├── tsconfig.json └── tslint.json /.github/workflows/ci.yml: -------------------------------------------------------------------------------- 1 | name: Test 2 | 3 | on: 4 | pull_request: 5 | branches: 6 | - master 7 | push: 8 | branches: 9 | - master 10 | 11 | jobs: 12 | unit: 13 | runs-on: ubuntu-latest 14 | strategy: 15 | matrix: 16 | version: ['16', '18', '20'] 17 | fail-fast: false 18 | steps: 19 | - uses: actions/checkout@v3 20 | - uses: actions/setup-node@v3 21 | with: 22 | node-version: ${{ matrix.version }} 23 | cache: npm 24 | - run: npm install 25 | - run: npm test 26 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | node_modules/ 2 | .idea/ 3 | typings/ 4 | npm-debug.log 5 | dist/ 6 | gtfs.zip 7 | *.txt 8 | *.zip 9 | 10 | -------------------------------------------------------------------------------- /.npmignore: -------------------------------------------------------------------------------- 1 | node_modules/ 2 | npm-shrinkwrap.json 3 | .idea/ 4 | npm-debug.log 5 | src/ 6 | test/ 7 | tsconfig.json 8 | .travis.yml 9 | *.zip 10 | resource/ 11 | *.txt 12 | -------------------------------------------------------------------------------- /.travis.yml: -------------------------------------------------------------------------------- 1 | language: node_js 2 | node_js: 3 | - 11 4 | 5 | install: npm install 6 | script: npm test 7 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ![gtfsmerge](logo.png) 2 | 3 | [![Travis](https://img.shields.io/travis/planarnetwork/gtfsmerge.svg?style=flat-square)](https://travis-ci.org/planarnetwork/gtfsmerge) ![npm](https://img.shields.io/npm/v/gtfsmerge.svg?style=flat-square) ![David](https://img.shields.io/david/planarnetwork/gtfsmerge.svg?style=flat-square) 4 | 5 | gtfsmerge merges multiple GTFS zip files into a single zip. 6 | 7 | - Transfers are created for stops that are close to each other 8 | - Duplicate stops, agencies and routes are assumed to be the same stop and only output once. 9 | - Calendars, calendar dates, trips and stop times are re-indexed. 10 | - Identical calendars are merged into a single entry. 11 | - Any calendars or calendar dates in the past are removed along with their corresponding trips 12 | - Any calendar dates without a calendar are converted to a calendar 13 | - Any unused stops are removed 14 | - Routes can be removed based on their type (Bus, Rail, etc) 15 | - This tool does not currently process any of the fares files. Please raise an issue if you would like this feature. 16 | 17 | ## Installation 18 | 19 | Please note that zip/unzip and [node 11.x](https://nodejs.org) or above are required. 20 | 21 | gtfsmerge is a CLI tool that can be installed via NPM: 22 | 23 | ``` 24 | sudo apt-get install nodejs zip 25 | npm install -g gtfsmerge 26 | ``` 27 | 28 | ## Usage 29 | 30 | It can be run by specifying the input and output files as CLI arguments: 31 | 32 | ``` 33 | gtfsmerge input1.zip input2.zip output.zip 34 | ``` 35 | 36 | You can specify the distance (in kilometers) that should be used add transfers for nearby stops: 37 | 38 | ``` 39 | gtfsmerge --transfer-distance=2 input1.zip input2.zip output.zip 40 | ``` 41 | 42 | Stops with the same ID in different files are assumed to be the same stop but it is possible to add a prefix if this is not the case: 43 | 44 | ``` 45 | gtfsmerge --stop-prefix=input1_stop input1.zip modified-input1.zip 46 | gtfsmerge modified-input1.zip input2.zip output.zip 47 | ``` 48 | 49 | Routes can be removed based on their type: 50 | 51 | ``` 52 | gtfsmerge --remove-route-types=0,1,4 input1.zip input2.zip output.zip 53 | ``` 54 | 55 | ## Contributing 56 | 57 | Issues and PRs are very welcome. To get the project set up run 58 | 59 | ``` 60 | git clone git@github.com:planarnetwork/gtfsmerge 61 | npm install --dev 62 | npm test 63 | ``` 64 | 65 | If you would like to send a pull request please write your contribution in TypeScript and if possible, add a test. 66 | 67 | ## License 68 | 69 | This software is licensed under [GNU GPLv3](https://www.gnu.org/licenses/gpl-3.0.en.html). 70 | 71 | -------------------------------------------------------------------------------- /bin/gtfsmerge.sh: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | ":" //# comment; exec /usr/bin/env node --max_old_space_size=8000 "$0" "$@" 3 | require("../dist/index.js"); 4 | -------------------------------------------------------------------------------- /logo.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/planarnetwork/gtfsmerge/c9ad0cccc6c8db089fd0f78baf2ee5674bc5975c/logo.png 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"https://github.com/sponsors/sindresorhus" 2394 | } 2395 | } 2396 | } 2397 | } 2398 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "gtfsmerge", 3 | "version": "2.1.1", 4 | "description": "Merge GTFS data sets", 5 | "main": "dist/index.js", 6 | "types": "dist/index.d.ts", 7 | "bin": { 8 | "gtfsmerge": "bin/gtfsmerge.sh" 9 | }, 10 | "scripts": { 11 | "start": "NODE_OPTIONS='--max-old-space-size=8000' ts-node src/index.ts", 12 | "prepublishOnly": "rm -r dist;tsc -p ./ --outDir dist/", 13 | "test": "npm run lint && mocha --require ts-node/register 'src/**/*.spec.ts'", 14 | "lint-raw": "tslint --project tsconfig.json", 15 | "lint": "npm run lint-raw -- -t stylish" 16 | }, 17 | "repository": { 18 | "type": "git", 19 | "url": "git+https://github.com/planarnetwork/gtfsmerge.git" 20 | }, 21 | "keywords": [ 22 | "gtfs", 23 | "transit", 24 | "data" 25 | ], 26 | "author": "Linus Norton ", 27 | "license": "GPL-3.0", 28 | "bugs": { 29 | "url": "https://github.com/planarnetwork/gtfsmerge/issues" 30 | }, 31 | "homepage": "https://github.com/planarnetwork/gtfsmerge#readme", 32 | "devDependencies": { 33 | "@types/chai": "^4.1.7", 34 | "@types/chai-spies": "^1.0.0", 35 | "@types/mocha": "^5.2.7", 36 | "@types/node": "^11.13.13", 37 | "@types/rimraf": "^2.0.2", 38 | "@types/yargs": "^12.0.12", 39 | "chai": "^4.2.0", 40 | "chai-spies": "^1.0.0", 41 | "mocha": "^10.2.0", 42 | "ts-node": "^8.2.0", 43 | "tslint": "^5.17.0", 44 | "typescript": "^3.5.1" 45 | }, 46 | "dependencies": { 47 | "cheap-ruler": "^2.5.1", 48 | "gtfs-stream": "^2.0.8", 49 | "rimraf": "^2.6.3", 50 | "yargs": "^13.2.4" 51 | } 52 | } 53 | -------------------------------------------------------------------------------- /src/Container.ts: -------------------------------------------------------------------------------- 1 | import { MergeCommand } from "./gtfs/MergeCommand"; 2 | import { GTFSLoader, gtfsStreamFactory } from "./gtfs/GTFSLoader"; 3 | import { GTFSOutputFactory } from "./gtfs/GTFSOutputFactory"; 4 | import { CalendarFactory } from "./gtfs/calendar/CalendarFactory"; 5 | import { ZipOutput } from "./zip/ZipOutput"; 6 | import * as cheapRuler from "cheap-ruler"; 7 | import { RouteTypeIndex } from "./gtfs/merger/RouteMerger"; 8 | 9 | export class Container { 10 | 11 | public getMergeCommand(tempFolder: string, transferDistance: number, removeRoutes: string[]): MergeCommand { 12 | const removeRouteIndex = removeRoutes.reduce((index, routeType) => { 13 | index[routeType] = true; 14 | 15 | return index; 16 | }, {} as RouteTypeIndex); 17 | 18 | return new MergeCommand( 19 | new GTFSLoader(gtfsStreamFactory), 20 | new GTFSOutputFactory( 21 | new CalendarFactory(), 22 | tempFolder, 23 | cheapRuler(46), 24 | transferDistance, 25 | removeRouteIndex 26 | ), 27 | new ZipOutput(tempFolder) 28 | ); 29 | } 30 | 31 | } 32 | -------------------------------------------------------------------------------- /src/csv/CSVStream.spec.ts: -------------------------------------------------------------------------------- 1 | import * as chai from "chai"; 2 | import {CSVStream} from "./CSVStream"; 3 | import { Writable } from "stream"; 4 | 5 | describe("CSVStream", () => { 6 | 7 | it("sends the header first", () => { 8 | const mock = new MockStream(); 9 | const stream = new CSVStream(["field1", "field2"]); 10 | stream.pipe(mock); 11 | const expected = "field1,field2\na,b\n"; 12 | 13 | stream.write({ field1: "a", field2: "b" }); 14 | 15 | chai.expect(mock.data).to.deep.equal(expected); 16 | }); 17 | 18 | it("does not send duplicate items", () => { 19 | const mock = new MockStream(); 20 | const stream = new CSVStream(["field1", "field2"], "field1"); 21 | stream.pipe(mock); 22 | const expected = "field1,field2\na,b\nb,c\n"; 23 | 24 | stream.write({ field1: "a", field2: "b" }); 25 | stream.write({ field1: "a", field2: "c" }); 26 | stream.write({ field1: "b", field2: "c" }); 27 | 28 | chai.expect(mock.data).to.deep.equal(expected); 29 | }); 30 | 31 | }); 32 | 33 | class MockStream extends Writable { 34 | public data = ""; 35 | 36 | public _write(chunk: any, encoding: string, callback: any) { 37 | this.data += chunk; 38 | 39 | callback(); 40 | } 41 | 42 | } 43 | -------------------------------------------------------------------------------- /src/csv/CSVStream.ts: -------------------------------------------------------------------------------- 1 | import {Transform, TransformCallback} from "stream"; 2 | 3 | /** 4 | * Uses the underlying Writable stream to output GTFS data 5 | */ 6 | export class CSVStream extends Transform { 7 | private headerSent = false; 8 | private seenKeys = {}; 9 | 10 | constructor( 11 | private readonly fields: string[], 12 | private readonly key: string | null = null 13 | ) { 14 | super({ encoding: "utf8", objectMode: true }); 15 | } 16 | 17 | /** 18 | * Write the given entity to the file stream 19 | */ 20 | public _transform(data: any, encoding: string, callback: TransformCallback): void { 21 | if (!this.headerSent) { 22 | this.push(this.fields.join() + "\n"); 23 | 24 | this.headerSent = true; 25 | } 26 | 27 | const key = this.key ? data[this.key] : null; 28 | 29 | if (!key || !this.seenKeys[key]) { 30 | this.seenKeys[key] = true; 31 | const fields = this.fields.map(f => this.quote(data[f])); 32 | 33 | this.push(fields.join() + "\n"); 34 | } 35 | 36 | callback(); 37 | } 38 | 39 | private quote(text: string | number | undefined) { 40 | return typeof text === "string" && text.includes(",") ? "\"" + text + "\"" : text; 41 | } 42 | 43 | } 44 | 45 | -------------------------------------------------------------------------------- /src/gtfs/GTFS.ts: -------------------------------------------------------------------------------- 1 | 2 | export type AgencyID = string; 3 | 4 | export interface Agency { 5 | agency_id: AgencyID; 6 | agency_name: string; 7 | agency_url: string; 8 | agency_timezone: string; 9 | agency_lang: string; 10 | agency_phone: string; 11 | agency_fare_url: string | null; 12 | } 13 | 14 | export type ServiceID = string | number; 15 | 16 | export interface Calendar { 17 | service_id: ServiceID, 18 | monday: 0 | 1, 19 | tuesday: 0 | 1, 20 | wednesday: 0 | 1, 21 | thursday: 0 | 1, 22 | friday: 0 | 1, 23 | saturday: 0 | 1, 24 | sunday: 0 | 1, 25 | start_date: string, 26 | end_date: string, 27 | } 28 | 29 | export interface CalendarDate { 30 | service_id: ServiceID; 31 | date: string; 32 | exception_type: number; 33 | } 34 | 35 | export interface Trip { 36 | route_id: RouteID; 37 | service_id: ServiceID; 38 | trip_id: number; 39 | trip_headsign: string; 40 | trip_short_name: string; 41 | direction_id: 0 | 1; 42 | wheelchair_accessible: 0 | 1 | 2; 43 | bikes_allowed: 0 | 1 | 2; 44 | } 45 | 46 | export type RouteID = number | string; 47 | 48 | export interface Route { 49 | route_id: RouteID; 50 | agency_id: AgencyID; 51 | route_short_name: string; 52 | route_long_name: string; 53 | route_type: RouteType; 54 | route_text_color: string | null; 55 | route_color: string | null; 56 | route_url: string | null; 57 | route_desc: string | null; 58 | } 59 | 60 | export enum RouteType { 61 | Tram = 0, 62 | Subway = 1, 63 | Rail = 2, 64 | Bus = 3, 65 | Ferry = 4, 66 | Cable = 5, 67 | Gondola = 6, 68 | Funicular = 7 69 | } 70 | 71 | export type StopID = string; 72 | 73 | export interface Stop { 74 | stop_id: StopID; 75 | stop_code: string; 76 | stop_name: string; 77 | stop_desc: string; 78 | stop_lat: number; 79 | stop_lon: number; 80 | zone_id: number; 81 | stop_url: string; 82 | location_type: 0 | 1; 83 | parent_station: string; 84 | stop_timezone: string; 85 | wheelchair_boarding: 0 | 1 | 2; 86 | } 87 | 88 | export interface StopTime { 89 | trip_id: number; 90 | arrival_time: string; 91 | departure_time: string; 92 | stop_id: StopID; 93 | stop_sequence: number; 94 | stop_headsign: string; 95 | pickup_type: 0 | 1 | 2 | 3; 96 | drop_off_type: 0 | 1 | 2 | 3; 97 | shape_dist_traveled: null; 98 | timepoint: 0 | 1; 99 | } 100 | 101 | export interface Transfer { 102 | from_stop_id: StopID, 103 | to_stop_id: StopID, 104 | transfer_type: TransferType, 105 | min_transfer_time: number 106 | } 107 | 108 | export enum TransferType { 109 | Recommended = 0, 110 | Timed = 1, 111 | MinTime = 2, 112 | NotPossible = 3 113 | } 114 | 115 | -------------------------------------------------------------------------------- /src/gtfs/GTFSLoader.spec.ts: -------------------------------------------------------------------------------- 1 | import { Readable, Transform } from "stream"; 2 | import { GTFSLoader } from "./GTFSLoader"; 3 | import * as chai from "chai"; 4 | import * as spies from "chai-spies"; 5 | 6 | chai.use(spies); 7 | 8 | describe("GTFSLoader", () => { 9 | 10 | it("pipes data to gtfs-stream", async () => { 11 | const stream = () => new MockGTFSStream() as any; 12 | const loader = new GTFSLoader(stream); 13 | const file = new MockFileStream([{}]); 14 | const spy = chai.spy.on(file, "pipe"); 15 | 16 | await loader.load(file); 17 | 18 | chai.expect(spy).to.have.been.called.exactly(1); 19 | }); 20 | 21 | it("removes calendars before a specified date", async () => { 22 | const stream = () => new MockGTFSStream() as any; 23 | const loader = new GTFSLoader(stream); 24 | const file = new MockFileStream([ 25 | { type: "calendar", data: { monday: 1, end_date: "20190528" } }, 26 | { type: "calendar", data: { monday: 1, end_date: "20190501" } }, 27 | ]); 28 | 29 | const result = await loader.load(file, "", "20190515"); 30 | 31 | chai.expect(result.calendars).to.deep.equal([ 32 | { monday: 1, end_date: "20190528" }, 33 | ]); 34 | }); 35 | 36 | it("removes calendar dates before a specified date", async () => { 37 | const stream = () => new MockGTFSStream() as any; 38 | const loader = new GTFSLoader(stream); 39 | const file = new MockFileStream([ 40 | { type: "calendar_date", data: { service_id: 1, date: "20190528" } }, 41 | { type: "calendar_date", data: { service_id: 1, date: "20190501" } }, 42 | ]); 43 | 44 | const result = await loader.load(file, "", "20190515"); 45 | 46 | chai.expect(result.calendarDates).to.deep.equal({ 47 | 1: [ 48 | { service_id: 1, date: "20190528" }, 49 | ] 50 | }); 51 | }); 52 | 53 | it("prefixes stops", async () => { 54 | const stream = () => new MockGTFSStream() as any; 55 | const loader = new GTFSLoader(stream); 56 | const file = new MockFileStream([ 57 | { type: "stop", data: { stop_id: "A", stop_code: "A", stop_lon: 1, stop_lat: 1 } }, 58 | { type: "stop", data: { stop_id: "B", stop_code: "B", stop_lon: 1, stop_lat: 1 } }, 59 | ]); 60 | 61 | const result = await loader.load(file, "_"); 62 | 63 | chai.expect(result.stops).to.deep.equal([ 64 | { stop_id: "_A", stop_code: "A", stop_lon: 1, stop_lat: 1 }, 65 | { stop_id: "_B", stop_code: "B", stop_lon: 1, stop_lat: 1 }, 66 | ]); 67 | }); 68 | 69 | it("prefixes stops in stop_times", async () => { 70 | const stream = () => new MockGTFSStream() as any; 71 | const loader = new GTFSLoader(stream); 72 | const file = new MockFileStream([ 73 | { type: "stop_time", data: { stop_id: "A", departure_time: 1, arrival_time: 1 } }, 74 | { type: "stop_time", data: { stop_id: "B", departure_time: 1, arrival_time: 1 } }, 75 | ]); 76 | 77 | const result = await loader.load(file, "_"); 78 | 79 | chai.expect(result.stopTimes).to.deep.equal([ 80 | { stop_id: "_A", departure_time: 1, arrival_time: 1 }, 81 | { stop_id: "_B", departure_time: 1, arrival_time: 1 }, 82 | ]); 83 | }); 84 | 85 | }); 86 | 87 | class MockGTFSStream extends Transform { 88 | 89 | constructor() { 90 | super({ objectMode: true }); 91 | } 92 | 93 | public _transform(data: any, encoding: string, callback: any): void { 94 | callback(null, data); 95 | } 96 | 97 | } 98 | 99 | class MockFileStream extends Readable { 100 | 101 | constructor( 102 | private readonly data: any[] 103 | ) { 104 | super({ objectMode: true }); 105 | } 106 | 107 | public _read(size: number): void { 108 | if (this.data.length === 0) { 109 | this.push(null); 110 | } 111 | else { 112 | this.push(this.data.reverse().pop()); 113 | } 114 | } 115 | 116 | } 117 | -------------------------------------------------------------------------------- /src/gtfs/GTFSLoader.ts: -------------------------------------------------------------------------------- 1 | import { Agency, Calendar, CalendarDate, Route, ServiceID, Stop, StopID, StopTime, Transfer, Trip } from "./GTFS"; 2 | import { Readable, Transform } from "stream"; 3 | import * as gtfs from "gtfs-stream"; 4 | 5 | /** 6 | * Returns trips, transfers, interchange time and calendars from a GTFS zip. 7 | */ 8 | export class GTFSLoader { 9 | 10 | constructor( 11 | private readonly gtfsStream: () => Transform 12 | ) {} 13 | 14 | /** 15 | * Create a mutable loader then add each row until the end of the stream is reached 16 | */ 17 | public load(file: Readable, stopPrefix: string = "", filterBefore?: string): Promise { 18 | return new Promise(resolve => { 19 | const handler = new MutableGTFSLoader(stopPrefix, filterBefore); 20 | 21 | file.pipe(this.gtfsStream()) 22 | .on("data", entity => handler.process(entity)) 23 | .on("end", () => resolve(handler.getResults())); 24 | }); 25 | } 26 | 27 | } 28 | 29 | /** 30 | * Encapsulation of mutable state while the results are loaded from the zip 31 | */ 32 | class MutableGTFSLoader { 33 | private readonly transfers = {}; 34 | private readonly result: GTFSZip = { 35 | trips: [], 36 | transfers: [], 37 | calendars: [], 38 | calendarDates: {}, 39 | stopTimes: [], 40 | routes: [], 41 | agencies: [], 42 | stops: [], 43 | parentStops: {} 44 | }; 45 | 46 | constructor( 47 | private readonly stopPrefix: string = "", 48 | private readonly filterBefore: string | undefined 49 | ) { } 50 | 51 | public process(entity: any) { 52 | return this[entity.type] && this[entity.type](entity.data); 53 | } 54 | 55 | /** 56 | * Flatten the transfers and return the results 57 | */ 58 | public getResults(): GTFSZip { 59 | return { 60 | ...this.result, 61 | transfers: Object.values(this.transfers) 62 | }; 63 | } 64 | 65 | private trip(row: Trip): void { 66 | this.result.trips.push(row); 67 | } 68 | 69 | private stop_time(row: StopTime): void { 70 | if (row.departure_time && row.arrival_time) { 71 | row.stop_id = this.stopPrefix + row.stop_id; 72 | this.result.stopTimes.push(row); 73 | } 74 | } 75 | 76 | private route(row: Route): void { 77 | this.result.routes.push(row); 78 | } 79 | 80 | private stop(row: Stop): void { 81 | if (!row.parent_station) { 82 | row.stop_id = this.stopPrefix + row.stop_id; 83 | row.stop_lon = +row.stop_lon; 84 | row.stop_lat = +row.stop_lat; 85 | 86 | this.result.stops.push(row); 87 | } 88 | else { 89 | this.result.parentStops[row.stop_id] = row.parent_station; 90 | } 91 | } 92 | 93 | private agency(row: Agency): void { 94 | this.result.agencies.push(row); 95 | } 96 | 97 | private calendar(row: Calendar): void { 98 | const inPast = !this.filterBefore || row.end_date < this.filterBefore; 99 | const runs = row.monday 100 | || row.tuesday 101 | || row.wednesday 102 | || row.thursday 103 | || row.friday 104 | || row.saturday 105 | || row.sunday; 106 | 107 | if (!inPast && runs) { 108 | this.result.calendars.push(row); 109 | } 110 | } 111 | 112 | private calendar_date(row: CalendarDate) { 113 | if (!this.filterBefore || row.date >= this.filterBefore) { 114 | this.result.calendarDates[row.service_id] = this.result.calendarDates[row.service_id] || []; 115 | 116 | this.result.calendarDates[row.service_id].push(row); 117 | } 118 | } 119 | 120 | private link(row: any): void { 121 | row.min_transfer_time = row.duration; 122 | row.transfer_type = 2; 123 | 124 | this.transfer(row); 125 | } 126 | 127 | private transfer(row: Transfer) { 128 | row.from_stop_id = this.stopPrefix + row.from_stop_id; 129 | row.to_stop_id = this.stopPrefix + row.to_stop_id; 130 | 131 | const key = row.from_stop_id + "_" + row.to_stop_id; 132 | 133 | if (!this.transfers[key] || this.transfers[key].min_transfer_time > row.min_transfer_time) { 134 | this.transfers[key] = row; 135 | } 136 | } 137 | } 138 | 139 | export interface GTFSZip { 140 | trips: Trip[], 141 | transfers: Transfer[], 142 | calendars: Calendar[], 143 | calendarDates: Record, 144 | stopTimes: StopTime[], 145 | routes: Route[], 146 | agencies: Agency[], 147 | stops: Stop[], 148 | parentStops: Record 149 | } 150 | 151 | export const gtfsStreamFactory = () => gtfs({ raw: true }); 152 | -------------------------------------------------------------------------------- /src/gtfs/GTFSOutput.ts: -------------------------------------------------------------------------------- 1 | import { GTFSZip } from "./GTFSLoader"; 2 | import { CalendarMerger } from "./merger/CalendarMerger"; 3 | import { StopsAndTransfersMerger } from "./merger/StopsAndTransfersMerger"; 4 | import { StopTimesMerger } from "./merger/StopTimesMerger"; 5 | import { TripIDMap, TripsMerger } from "./merger/TripsMerger"; 6 | import { GenericMerger } from "./merger/GenericMerger"; 7 | import { RouteMerger } from "./merger/RouteMerger"; 8 | 9 | /** 10 | * Merges multiple GTFS sets into a single stream for each GTFS file (stops.txt etc) 11 | */ 12 | export class GTFSOutput { 13 | 14 | constructor( 15 | private readonly calendar: CalendarMerger, 16 | private readonly stopsAndTransfers: StopsAndTransfersMerger, 17 | private readonly stopTimes: StopTimesMerger, 18 | private readonly trips: TripsMerger, 19 | private readonly agencies: GenericMerger, 20 | private readonly routes: RouteMerger 21 | ) {} 22 | 23 | /** 24 | * Merge in the given GTFS data set and push the new items to the file streams. 25 | */ 26 | public async write(gtfs: GTFSZip): Promise { 27 | const [routeIdMap, serviceIdMap] = await Promise.all([ 28 | this.routes.write(gtfs.routes), 29 | this.calendar.write(gtfs.calendars, gtfs.calendarDates) 30 | ]); 31 | 32 | const tripIdMap = await this.trips.write(gtfs.trips, serviceIdMap, routeIdMap); 33 | const usedStops = await this.stopTimes.write(gtfs.stopTimes, tripIdMap, gtfs.parentStops); 34 | 35 | await Promise.all([ 36 | this.stopsAndTransfers.write(gtfs.stops, gtfs.transfers, gtfs.parentStops, usedStops), 37 | this.agencies.write(gtfs.agencies) 38 | ]); 39 | } 40 | 41 | public async end(): Promise { 42 | await Promise.all([ 43 | this.calendar.end(), 44 | this.stopsAndTransfers.end(), 45 | this.stopTimes.end(), 46 | this.trips.end(), 47 | this.agencies.end(), 48 | this.routes.end() 49 | ]); 50 | } 51 | } 52 | 53 | -------------------------------------------------------------------------------- /src/gtfs/GTFSOutputFactory.spec.ts: -------------------------------------------------------------------------------- 1 | import * as chai from "chai"; 2 | import { GTFSOutputFactory } from "./GTFSOutputFactory"; 3 | import { CalendarFactory } from "./calendar/CalendarFactory"; 4 | import * as cheapRuler from "cheap-ruler"; 5 | import { RouteTypeIndex } from "./merger/RouteMerger"; 6 | import * as fs from "fs"; 7 | import { GTFSOutput } from "./GTFSOutput"; 8 | 9 | describe("GTFSOutputFactory", () => { 10 | const tmpDir = "./tmp"; 11 | 12 | const factory = new GTFSOutputFactory( 13 | new CalendarFactory(), 14 | tmpDir, 15 | cheapRuler(46), 16 | 1, 17 | {} as RouteTypeIndex 18 | ); 19 | 20 | it("creates the output directory", () => { 21 | factory.create(); 22 | 23 | chai.expect(fs.existsSync(tmpDir)).to.equal(true); 24 | }); 25 | 26 | it("creates a GTFSOutput object", () => { 27 | const output = factory.create(); 28 | 29 | chai.expect(output instanceof GTFSOutput).to.equal(true); 30 | }); 31 | }); 32 | -------------------------------------------------------------------------------- /src/gtfs/GTFSOutputFactory.ts: -------------------------------------------------------------------------------- 1 | import * as fs from "fs"; 2 | import { sync as rimraf } from "rimraf"; 3 | import { GTFSOutput } from "./GTFSOutput"; 4 | import { CalendarMerger } from "./merger/CalendarMerger"; 5 | import { MemoizedSequence } from "../sequence/MemoizedSequence"; 6 | import { StopsAndTransfersMerger } from "./merger/StopsAndTransfersMerger"; 7 | import { StopTimesMerger } from "./merger/StopTimesMerger"; 8 | import { TripsMerger } from "./merger/TripsMerger"; 9 | import { GenericMerger } from "./merger/GenericMerger"; 10 | import { CalendarFactory } from "./calendar/CalendarFactory"; 11 | import { CSVStream } from "../csv/CSVStream"; 12 | import { Sequence } from "../sequence/Sequence"; 13 | import { CheapRuler } from "cheap-ruler"; 14 | import { RouteMerger, RouteTypeIndex } from "./merger/RouteMerger"; 15 | 16 | export class GTFSOutputFactory { 17 | 18 | constructor( 19 | private readonly calendarFactory: CalendarFactory, 20 | private readonly tempFolder: string, 21 | private readonly ruler: CheapRuler, 22 | private readonly transferDistance: number, 23 | private readonly removeRouteTypes: RouteTypeIndex 24 | ) {} 25 | 26 | public create(): GTFSOutput { 27 | if (fs.existsSync(this.tempFolder)) { 28 | rimraf(this.tempFolder); 29 | } 30 | 31 | fs.mkdirSync(this.tempFolder); 32 | 33 | const calendarStream = new CSVStream( 34 | [ 35 | "service_id", 36 | "monday", 37 | "tuesday", 38 | "wednesday", 39 | "thursday", 40 | "friday", 41 | "saturday", 42 | "sunday", 43 | "start_date", 44 | "end_date" 45 | ], 46 | "service_id" 47 | ); 48 | calendarStream.pipe(fs.createWriteStream(this.tempFolder + "calendar.txt")); 49 | 50 | const calendarDatesStream = new CSVStream( 51 | [ 52 | "service_id", 53 | "date", 54 | "exception_type" 55 | ] 56 | ); 57 | calendarDatesStream.pipe(fs.createWriteStream(this.tempFolder + "calendar_dates.txt")); 58 | 59 | const tripsStream = new CSVStream( 60 | [ 61 | "route_id", 62 | "service_id", 63 | "trip_id", 64 | "trip_headsign", 65 | "trip_short_name", 66 | "direction_id", 67 | "wheelchair_accessible", 68 | "bikes_allowed" 69 | ] 70 | ); 71 | tripsStream.pipe(fs.createWriteStream(this.tempFolder + "trips.txt")); 72 | 73 | const stopTimesStream = new CSVStream( 74 | [ 75 | "trip_id", 76 | "arrival_time", 77 | "departure_time", 78 | "stop_id", 79 | "stop_sequence", 80 | "stop_headsign", 81 | "pickup_type", 82 | "drop_off_type", 83 | "shape_dist_traveled", 84 | "timepoint" 85 | ] 86 | ); 87 | stopTimesStream.pipe(fs.createWriteStream(this.tempFolder + "stop_times.txt")); 88 | 89 | const routesStream = new CSVStream( 90 | [ 91 | "route_id", 92 | "agency_id", 93 | "route_short_name", 94 | "route_long_name", 95 | "route_type", 96 | "route_text_color", 97 | "route_color", 98 | "route_url", 99 | "route_desc" 100 | ], 101 | "route_id" 102 | ); 103 | routesStream.pipe(fs.createWriteStream(this.tempFolder + "routes.txt")); 104 | 105 | const agencyStream = new CSVStream( 106 | [ 107 | "agency_id", 108 | "agency_name", 109 | "agency_url", 110 | "agency_timezone", 111 | "agency_lang", 112 | "agency_phone", 113 | "agency_fare_url" 114 | ], 115 | "agency_id" 116 | ); 117 | agencyStream.pipe(fs.createWriteStream(this.tempFolder + "agency.txt")); 118 | 119 | const stopsStream = new CSVStream( 120 | [ 121 | "stop_id", 122 | "stop_code", 123 | "stop_name", 124 | "stop_desc", 125 | "stop_lat", 126 | "stop_lon", 127 | "zone_id", 128 | "stop_url", 129 | "location_type", 130 | "parent_station", 131 | "stop_timezone", 132 | "wheelchair_boarding" 133 | ], 134 | "stop_id" 135 | ); 136 | stopsStream.pipe(fs.createWriteStream(this.tempFolder + "stops.txt")); 137 | 138 | const transfersStream = new CSVStream( 139 | [ 140 | "from_stop_id", 141 | "to_stop_id", 142 | "transfer_type", 143 | "min_transfer_time" 144 | ] 145 | ); 146 | transfersStream.pipe(fs.createWriteStream(this.tempFolder + "transfers.txt")); 147 | 148 | return new GTFSOutput( 149 | new CalendarMerger(calendarStream, calendarDatesStream, this.calendarFactory, new MemoizedSequence()), 150 | new StopsAndTransfersMerger(stopsStream, transfersStream, this.ruler, this.transferDistance), 151 | new StopTimesMerger(stopTimesStream), 152 | new TripsMerger(tripsStream, new Sequence()), 153 | new GenericMerger(agencyStream), 154 | new RouteMerger(routesStream, new Sequence(), this.removeRouteTypes) 155 | ); 156 | } 157 | } 158 | -------------------------------------------------------------------------------- /src/gtfs/MergeCommand.ts: -------------------------------------------------------------------------------- 1 | import * as fs from "fs"; 2 | import { GTFSLoader } from "./GTFSLoader"; 3 | import { GTFSOutputFactory } from "./GTFSOutputFactory"; 4 | import { ZipOutput } from "../zip/ZipOutput"; 5 | 6 | 7 | /** 8 | * Merges a list of input GTFS files into a single output file 9 | */ 10 | export class MergeCommand { 11 | 12 | constructor( 13 | private readonly gtfsLoader: GTFSLoader, 14 | private readonly outputFactory: GTFSOutputFactory, 15 | private readonly zipOutput: ZipOutput 16 | ) {} 17 | 18 | /** 19 | * Iterate over the list of inputs loading and merging each one at a time. 20 | */ 21 | public async run( 22 | inputs: string[], 23 | outputFile: string, 24 | stopPrefix: string, 25 | filterDatesBefore?: string 26 | ): Promise { 27 | const output = this.outputFactory.create(); 28 | 29 | for (const input of inputs) { 30 | console.log("Loading " + input); 31 | const file = fs.createReadStream(input); 32 | const gtfs = await this.gtfsLoader.load(file, stopPrefix, filterDatesBefore); 33 | 34 | console.log("Processing " + input); 35 | await output.write(gtfs); 36 | } 37 | 38 | await output.end(); 39 | await this.zipOutput.write(outputFile); 40 | } 41 | } 42 | -------------------------------------------------------------------------------- /src/gtfs/calendar/CalendarFactory.spec.ts: -------------------------------------------------------------------------------- 1 | import * as chai from "chai"; 2 | import {CalendarFactory} from "./CalendarFactory"; 3 | 4 | describe("CalendarFactory", () => { 5 | const factory = new CalendarFactory(); 6 | 7 | it("sets the start and end date", () => { 8 | const dates = [ 9 | { service_id: 1, exception_type: 1, date: "20190615" }, 10 | { service_id: 1, exception_type: 1, date: "20190515" }, 11 | { service_id: 1, exception_type: 1, date: "20190520" } 12 | ]; 13 | 14 | const [calendar] = factory.create("1", dates); 15 | 16 | chai.expect(calendar.start_date).to.deep.equal("20190515"); 17 | chai.expect(calendar.end_date).to.deep.equal("20190615"); 18 | }); 19 | 20 | it("does not enable days where the service is not running", () => { 21 | const dates = [ 22 | { service_id: 1, exception_type: 1, date: "20190615" }, 23 | { service_id: 1, exception_type: 1, date: "20190515" }, 24 | { service_id: 1, exception_type: 1, date: "20190522" }, 25 | { service_id: 1, exception_type: 1, date: "20190529" }, 26 | { service_id: 1, exception_type: 1, date: "20190605" }, 27 | { service_id: 1, exception_type: 1, date: "20190520" } 28 | ]; 29 | 30 | const [calendar] = factory.create("1", dates); 31 | 32 | chai.expect(calendar.monday).to.deep.equal(0); 33 | chai.expect(calendar.tuesday).to.deep.equal(0); 34 | chai.expect(calendar.wednesday).to.deep.equal(1); 35 | chai.expect(calendar.thursday).to.deep.equal(0); 36 | chai.expect(calendar.friday).to.deep.equal(0); 37 | chai.expect(calendar.saturday).to.deep.equal(0); 38 | chai.expect(calendar.sunday).to.deep.equal(0); 39 | }); 40 | 41 | it("adds exception days", () => { 42 | const dates = [ 43 | { service_id: 1, exception_type: 1, date: "20190615" }, 44 | { service_id: 1, exception_type: 1, date: "20190515" }, 45 | { service_id: 1, exception_type: 1, date: "20190522" }, 46 | { service_id: 1, exception_type: 1, date: "20190529" }, 47 | { service_id: 1, exception_type: 1, date: "20190605" }, 48 | { service_id: 1, exception_type: 1, date: "20190520" } 49 | ]; 50 | 51 | const [calendar, calendarDates] = factory.create("1", dates); 52 | 53 | chai.expect(calendarDates[0].date).to.deep.equal("20190520"); 54 | chai.expect(calendarDates[1].date).to.deep.equal("20190612"); 55 | chai.expect(calendarDates[2].date).to.deep.equal("20190615"); 56 | }); 57 | 58 | }); 59 | -------------------------------------------------------------------------------- /src/gtfs/calendar/CalendarFactory.ts: -------------------------------------------------------------------------------- 1 | import { Calendar, CalendarDate } from "../GTFS"; 2 | import { toGTFSDate, getDateFromGTFSString } from "./gtfsDateUtils"; 3 | 4 | /** 5 | * Creates calendars based on a set of calendar dates. 6 | */ 7 | export class CalendarFactory { 8 | /** 9 | * Count the number of times a service runs or does not run on each day of the week and then decide whether to 10 | * create a calendar with that day enabled with exclude days when it is not running, or disabled with include 11 | * days when it is running. 12 | */ 13 | public create( 14 | serviceId: string, 15 | calendarDates: CalendarDate[] 16 | ): [Calendar, CalendarDate[]] { 17 | calendarDates.sort((a, b) => +a.date - +b.date); 18 | 19 | const startDate = calendarDates[0]; 20 | const endDate = calendarDates[calendarDates.length - 1]; 21 | const [daysRunning, daysNotRunning] = this.splitCalendarDates( 22 | calendarDates, 23 | serviceId, 24 | startDate, 25 | endDate 26 | ); 27 | const calendar = this.createCalendar( 28 | serviceId, 29 | startDate, 30 | endDate, 31 | daysRunning, 32 | daysNotRunning 33 | ); 34 | const newCalendarDates = this.getCalendarDates(daysRunning, daysNotRunning); 35 | 36 | return [calendar, newCalendarDates]; 37 | } 38 | 39 | private splitCalendarDates( 40 | calendarDates: CalendarDate[], 41 | serviceId: string, 42 | startDate: CalendarDate, 43 | endDate: CalendarDate 44 | ): [CalendarDate[][], CalendarDate[][]] { 45 | const daysNotRunning: CalendarDate[][] = [[], [], [], [], [], [], []]; 46 | const daysRunning: CalendarDate[][] = [[], [], [], [], [], [], []]; 47 | const calendarDateIndex = this.indexCalendarDates(calendarDates); 48 | 49 | let i = startDate.date; 50 | let date = getDateFromGTFSString(i); 51 | 52 | while (i <= endDate.date) { 53 | const dow = date.getDay(); 54 | 55 | if (calendarDateIndex[i]) { 56 | daysRunning[dow].push({ 57 | exception_type: 1, 58 | service_id: serviceId, 59 | date: i, 60 | }); 61 | } else { 62 | daysNotRunning[dow].push({ 63 | exception_type: 2, 64 | service_id: serviceId, 65 | date: i, 66 | }); 67 | } 68 | 69 | date.setDate(date.getDate() + 1); 70 | i = toGTFSDate(date); 71 | } 72 | 73 | return [daysRunning, daysNotRunning]; 74 | } 75 | 76 | private indexCalendarDates( 77 | calendarDates: CalendarDate[] 78 | ): Record { 79 | return calendarDates.reduce((index, calendarDate) => { 80 | index[calendarDate.date] = calendarDate; 81 | 82 | return index; 83 | }, {}); 84 | } 85 | 86 | private createCalendar( 87 | serviceId: string, 88 | startDate: CalendarDate, 89 | endDate: CalendarDate, 90 | daysRunning: CalendarDate[][], 91 | daysNotRunning: CalendarDate[][] 92 | ): Calendar { 93 | return { 94 | service_id: serviceId, 95 | start_date: startDate.date, 96 | end_date: endDate.date, 97 | sunday: daysRunning[0].length > daysNotRunning[0].length ? 1 : 0, 98 | monday: daysRunning[1].length > daysNotRunning[1].length ? 1 : 0, 99 | tuesday: daysRunning[2].length > daysNotRunning[2].length ? 1 : 0, 100 | wednesday: daysRunning[3].length > daysNotRunning[3].length ? 1 : 0, 101 | thursday: daysRunning[4].length > daysNotRunning[4].length ? 1 : 0, 102 | friday: daysRunning[5].length > daysNotRunning[5].length ? 1 : 0, 103 | saturday: daysRunning[6].length > daysNotRunning[6].length ? 1 : 0, 104 | }; 105 | } 106 | 107 | /** 108 | * For each day of the week check if the service runs more often than not. If it does, return the exclude days as 109 | * the calendar will have the day set to 1, if not then return the include days. 110 | */ 111 | private getCalendarDates( 112 | daysRunning: CalendarDate[][], 113 | daysNotRunning: CalendarDate[][] 114 | ): CalendarDate[] { 115 | return daysRunning.flatMap((runningDates, i) => { 116 | return runningDates.length > daysNotRunning[i].length 117 | ? daysNotRunning[i] 118 | : runningDates; 119 | }); 120 | } 121 | } 122 | -------------------------------------------------------------------------------- /src/gtfs/calendar/gftsDateUtils.spec.ts: -------------------------------------------------------------------------------- 1 | import * as chai from "chai"; 2 | import { toGTFSDate, getDateFromGTFSString } from "./gtfsDateUtils"; 3 | 4 | describe("toGTFSDate", () => { 5 | it("returns a GTFS date string", () => { 6 | const date = new Date("2019-06-04T00:00:00"); 7 | const result = toGTFSDate(date); 8 | 9 | chai.expect(result).to.equal("20190604"); 10 | }); 11 | }); 12 | 13 | describe("getDateFromGTFSString", () => { 14 | it("returns a JS Date from GTFS string", () => { 15 | const result = getDateFromGTFSString("20190604"); 16 | const dateDiff = result.getTime() - new Date(2019, 5, 4, 0, 0, 0).getTime(); 17 | chai.expect(dateDiff).to.equal(0); 18 | }); 19 | }); 20 | 21 | describe("GTFS date roundtrip", () => { 22 | it("Preserves GTFS dates when converting to/from JS dates", () => { 23 | function validateGtfsDateRoundtrip(gtfsDate: string) { 24 | const date = getDateFromGTFSString(gtfsDate); 25 | const result = toGTFSDate(date); 26 | chai.expect(result).to.equal(gtfsDate); 27 | } 28 | 29 | validateGtfsDateRoundtrip("20190601"); 30 | validateGtfsDateRoundtrip("20190604"); 31 | validateGtfsDateRoundtrip("20191231"); 32 | validateGtfsDateRoundtrip("20200101"); 33 | }); 34 | }); 35 | -------------------------------------------------------------------------------- /src/gtfs/calendar/gtfsDateUtils.ts: -------------------------------------------------------------------------------- 1 | export function toGTFSDate(date: Date): string { 2 | return ( 3 | date.getFullYear() + 4 | (date.getMonth() + 1).toString().padStart(2, "0") + 5 | date.getDate().toString().padStart(2, "0") 6 | ); 7 | } 8 | 9 | export function getDateFromGTFSString(i: string): Date { 10 | // Zero out the time portion of the date to avoid timezone issues 11 | return new Date( 12 | i.substr(0, 4) + "-" + i.substr(4, 2) + "-" + i.substr(6, 2) + "T00:00:00" 13 | ); 14 | } 15 | -------------------------------------------------------------------------------- /src/gtfs/merger/CalendarMerger.ts: -------------------------------------------------------------------------------- 1 | import { CalendarFactory } from "../calendar/CalendarFactory"; 2 | import { Calendar, CalendarDate, ServiceID } from "../GTFS"; 3 | import { MemoizedSequence } from "../../sequence/MemoizedSequence"; 4 | import { Writable } from "stream"; 5 | 6 | export class CalendarMerger { 7 | 8 | constructor( 9 | private readonly calendar: Writable, 10 | private readonly calendarDates: Writable, 11 | private readonly calendarFactory: CalendarFactory, 12 | private readonly serviceIdSequence: MemoizedSequence 13 | ) {} 14 | 15 | public async write(calendars: Calendar[], dateIndex: Record): Promise { 16 | const serviceIdMap = {}; 17 | 18 | for (const calendar of calendars) { 19 | const calendarDates = dateIndex[calendar.service_id] || []; 20 | 21 | await this.writeCalendar(calendar, calendarDates, serviceIdMap); 22 | } 23 | 24 | // check for any calendar dates that have no calendar entry 25 | for (const serviceId of Object.keys(dateIndex)) { 26 | if (!serviceIdMap[serviceId]) { 27 | const [calendar, calendarDates] = this.calendarFactory.create(serviceId, dateIndex[serviceId]); 28 | 29 | await this.writeCalendar(calendar, calendarDates, serviceIdMap); 30 | } 31 | } 32 | 33 | return serviceIdMap; 34 | } 35 | 36 | private async writeCalendar(calendar: Calendar, calendarDates: CalendarDate[], serviceIdMap: {}): Promise { 37 | const hash = this.getCalendarHash(calendar, calendarDates); 38 | const alreadySeenCalendar = this.serviceIdSequence.haveSeen(hash); 39 | const newServiceId = this.serviceIdSequence.get(hash); 40 | 41 | serviceIdMap[calendar.service_id] = newServiceId; 42 | 43 | if (!alreadySeenCalendar) { 44 | calendar.service_id = newServiceId; 45 | await this.push(this.calendar, calendar); 46 | 47 | for (const calendarDay of calendarDates) { 48 | calendarDay.service_id = newServiceId; 49 | await this.push(this.calendarDates, calendarDay); 50 | } 51 | } 52 | } 53 | 54 | private getCalendarHash(calendar: Calendar, calendarDates: CalendarDate[]): string { 55 | const { service_id, ...rest } = calendar; 56 | const days = calendarDates.map(d => d.date + "_" + d.exception_type).join(":"); 57 | const fields = Object.values({ days, ...rest }); 58 | 59 | return fields.join(); 60 | } 61 | 62 | private push(stream: Writable, data: any): Promise | void { 63 | const writable = stream.write(data); 64 | 65 | if (!writable) { 66 | return new Promise(resolve => stream.once("drain", () => resolve())); 67 | } 68 | } 69 | 70 | /** 71 | * Flush all the data to the output stream 72 | */ 73 | public async end(): Promise { 74 | return Promise.all([ 75 | new Promise(resolve => this.calendar.end(resolve)), 76 | new Promise(resolve => this.calendarDates.end(resolve)) 77 | ]); 78 | } 79 | 80 | } 81 | 82 | export type ServiceIDMap = Record; 83 | -------------------------------------------------------------------------------- /src/gtfs/merger/GenericMerger.ts: -------------------------------------------------------------------------------- 1 | 2 | import { Writable } from "stream"; 3 | 4 | /** 5 | * Pass the data through to the output stream 6 | */ 7 | export class GenericMerger { 8 | 9 | constructor( 10 | private readonly stream: Writable 11 | ) {} 12 | 13 | /** 14 | * Write all the given entries to the output stream 15 | */ 16 | public async write(items: any[]): Promise { 17 | for (const item of items) { 18 | await this.push(item); 19 | } 20 | } 21 | 22 | private push(data: any): Promise | void { 23 | const writable = this.stream.write(data); 24 | 25 | if (!writable) { 26 | return new Promise(resolve => this.stream.once("drain", () => resolve())); 27 | } 28 | } 29 | 30 | /** 31 | * Flush all the data to the output stream 32 | */ 33 | public end(): Promise { 34 | return new Promise(resolve => this.stream.end(resolve)); 35 | } 36 | 37 | } 38 | -------------------------------------------------------------------------------- /src/gtfs/merger/RouteMerger.ts: -------------------------------------------------------------------------------- 1 | import { Route, RouteID, RouteType, StopID, StopTime } from "../GTFS"; 2 | import { TripIDMap } from "./TripsMerger"; 3 | import { ParentStops } from "./StopsAndTransfersMerger"; 4 | import { Writable } from "stream"; 5 | import { Sequence } from "../../sequence/Sequence"; 6 | 7 | export class RouteMerger { 8 | 9 | constructor( 10 | private readonly routes: Writable, 11 | private readonly sequence: Sequence, 12 | private readonly removeRouteType: RouteTypeIndex 13 | ) {} 14 | 15 | /** 16 | * Output and re-index all routes. A map of old route ID to new route ID is returned. 17 | */ 18 | public async write(routes: Route[]): Promise { 19 | const routeIndex = {}; 20 | 21 | for (const route of routes) { 22 | if (!this.removeRouteType[route.route_type]) { 23 | const routeId = this.sequence.next(); 24 | 25 | routeIndex[route.route_id] = routeId; 26 | route.route_id = routeId; 27 | 28 | await this.push(route); 29 | } 30 | } 31 | 32 | return routeIndex; 33 | } 34 | 35 | private push(data: Route): Promise | void { 36 | const writable = this.routes.write(data); 37 | 38 | if (!writable) { 39 | return new Promise(resolve => this.routes.once("drain", resolve)); 40 | } 41 | } 42 | 43 | /** 44 | * Flush all the data to the output stream 45 | */ 46 | public async end(): Promise { 47 | return new Promise(resolve => this.routes.end(resolve)); 48 | } 49 | 50 | } 51 | 52 | export type RouteIndex = Record; 53 | export type RouteTypeIndex = Record; 54 | -------------------------------------------------------------------------------- /src/gtfs/merger/StopTimesMerger.ts: -------------------------------------------------------------------------------- 1 | import { StopID, StopTime } from "../GTFS"; 2 | import { TripIDMap } from "./TripsMerger"; 3 | import { ParentStops } from "./StopsAndTransfersMerger"; 4 | import { Writable } from "stream"; 5 | 6 | export class StopTimesMerger { 7 | 8 | constructor( 9 | private readonly stopTimes: Writable 10 | ) {} 11 | 12 | public async write( 13 | stopTimes: StopTime[], 14 | tripIdMap: TripIDMap, 15 | parentStops: ParentStops 16 | ): Promise { 17 | 18 | const usedStops = {}; 19 | 20 | for (const stopTime of stopTimes) { 21 | if (tripIdMap[stopTime.trip_id]) { 22 | stopTime.trip_id = tripIdMap[stopTime.trip_id]; 23 | stopTime.stop_id = parentStops[stopTime.stop_id] || stopTime.stop_id; 24 | usedStops[stopTime.stop_id] = true; 25 | 26 | await this.push(stopTime); 27 | } 28 | } 29 | 30 | return usedStops; 31 | } 32 | 33 | private push(data: StopTime): Promise | void { 34 | const writable = this.stopTimes.write(data); 35 | 36 | if (!writable) { 37 | return new Promise(resolve => this.stopTimes.once("drain", () => resolve())); 38 | } 39 | } 40 | 41 | /** 42 | * Flush all the data to the output stream 43 | */ 44 | public async end(): Promise { 45 | return new Promise(resolve => this.stopTimes.end(resolve)); 46 | } 47 | 48 | } 49 | 50 | export type UsedStops = Record; 51 | -------------------------------------------------------------------------------- /src/gtfs/merger/StopsAndTransfersMerger.ts: -------------------------------------------------------------------------------- 1 | import { Stop, StopID, Transfer } from "../GTFS"; 2 | import { Writable } from "stream"; 3 | import { CheapRuler } from "cheap-ruler"; 4 | import { UsedStops } from "./StopTimesMerger"; 5 | 6 | export class StopsAndTransfersMerger { 7 | private readonly stopLocations = {}; 8 | 9 | constructor( 10 | private readonly stops: Writable, 11 | private readonly transfers: Writable, 12 | private readonly ruler: CheapRuler, 13 | private readonly transferDistance: number 14 | ) {} 15 | 16 | /** 17 | * Write the transfers and return an index of all transfers, then write the stops 18 | * adding any missing transfers to stops that are within walking distance of each other 19 | */ 20 | public async write( 21 | stops: Stop[], 22 | transfers: Transfer[], 23 | parentStops: ParentStops, 24 | usedStops: UsedStops 25 | ): Promise { 26 | 27 | const existingTransfers = await this.writeTransfers(transfers, parentStops); 28 | 29 | return this.writeStops(stops, existingTransfers, usedStops); 30 | } 31 | 32 | private async writeTransfers(transfers: Transfer[], parentStops: ParentStops): Promise { 33 | const existingTransfers = {}; 34 | 35 | for (const transfer of transfers) { 36 | transfer.from_stop_id = parentStops[transfer.from_stop_id] || transfer.from_stop_id; 37 | transfer.to_stop_id = parentStops[transfer.to_stop_id] || transfer.to_stop_id; 38 | 39 | await this.push(this.transfers, transfer); 40 | 41 | existingTransfers[transfer.from_stop_id] = existingTransfers[transfer.from_stop_id] || {}; 42 | existingTransfers[transfer.from_stop_id][transfer.to_stop_id] = true; 43 | } 44 | 45 | return existingTransfers; 46 | } 47 | 48 | private async writeStops( 49 | stops: Stop[], 50 | existingTransfers: ExistingTransfers, 51 | usedStops: UsedStops 52 | ): Promise { 53 | 54 | for (const stop of stops) { 55 | if (usedStops[stop.stop_id]) { 56 | await this.push(this.stops, stop); 57 | 58 | if (this.transferDistance && !this.stopLocations[stop.stop_id] && stop.stop_lon !== 0 && stop.stop_lat !== 0) { 59 | await this.addNearbyStops(stop, existingTransfers); 60 | } 61 | } 62 | } 63 | } 64 | 65 | /** 66 | * Search any stops we've seen to see if we can walk there 67 | */ 68 | private async addNearbyStops(stop: Stop, existingTransfers: ExistingTransfers): Promise { 69 | const aCoords = [stop.stop_lat, stop.stop_lon] as [number, number]; 70 | 71 | for (const stopId in this.stopLocations) { 72 | const exists = existingTransfers[stop.stop_id] && existingTransfers[stop.stop_id][stopId]; 73 | const reverseExists = existingTransfers[stopId] && existingTransfers[stopId][stop.stop_id]; 74 | 75 | if (!exists || !reverseExists) { 76 | const distance = this.ruler.distance(aCoords, this.stopLocations[stopId]); 77 | 78 | if (distance < this.transferDistance) { 79 | await this.addTransfers(stop.stop_id, stopId, distance); 80 | } 81 | } 82 | } 83 | 84 | this.stopLocations[stop.stop_id] = aCoords; 85 | } 86 | 87 | private addTransfers(stopA: StopID, stopB: StopID, distance: number): Promise { 88 | const duration = Math.max(60, Math.round(distance * 1000)); 89 | const transfer = { from_stop_id: stopA, to_stop_id: stopB, transfer_type: 2, min_transfer_time: duration }; 90 | const reverse = { from_stop_id: stopB, to_stop_id: stopA, transfer_type: 2, min_transfer_time: duration }; 91 | 92 | return Promise.all([ 93 | this.push(this.transfers, transfer), 94 | this.push(this.transfers, reverse), 95 | ]); 96 | } 97 | 98 | private push(stream: Writable, data: any): Promise | void { 99 | const writable = stream.write(data); 100 | 101 | if (!writable) { 102 | return new Promise(resolve => stream.once("drain", resolve)); 103 | } 104 | } 105 | 106 | /** 107 | * Flush all the data to the output stream 108 | */ 109 | public async end(): Promise { 110 | return Promise.all([ 111 | new Promise(resolve => this.stops.end(resolve)), 112 | new Promise(resolve => this.transfers.end(resolve)) 113 | ]); 114 | } 115 | } 116 | 117 | type ExistingTransfers = Record>; 118 | export type ParentStops = Record; 119 | -------------------------------------------------------------------------------- /src/gtfs/merger/TripsMerger.ts: -------------------------------------------------------------------------------- 1 | 2 | import { RouteID, Trip } from "../GTFS"; 3 | import { ServiceIDMap } from "./CalendarMerger"; 4 | import { Writable } from "stream"; 5 | import { Sequence } from "../../sequence/Sequence"; 6 | 7 | export class TripsMerger { 8 | 9 | constructor( 10 | private readonly trips: Writable, 11 | private readonly sequence: Sequence 12 | ) {} 13 | 14 | public async write( 15 | trips: Trip[], 16 | serviceIdMap: ServiceIDMap, 17 | routeIdMap: Record 18 | ): Promise { 19 | 20 | const tripIdMap = {}; 21 | 22 | for (const trip of trips) { 23 | if (serviceIdMap[trip.service_id] && routeIdMap[trip.route_id]) { 24 | tripIdMap[trip.trip_id] = this.sequence.next(); 25 | 26 | trip.trip_id = tripIdMap[trip.trip_id]; 27 | trip.service_id = serviceIdMap[trip.service_id]; 28 | trip.route_id = routeIdMap[trip.route_id]; 29 | 30 | await this.push(trip); 31 | } 32 | } 33 | 34 | return tripIdMap; 35 | } 36 | 37 | private push(data: Trip): Promise | void { 38 | const writable = this.trips.write(data); 39 | 40 | if (!writable) { 41 | return new Promise(resolve => this.trips.once("drain", () => resolve())); 42 | } 43 | } 44 | 45 | /** 46 | * Flush all the data to the output stream 47 | */ 48 | public async end(): Promise { 49 | return new Promise(resolve => this.trips.end(resolve)); 50 | } 51 | 52 | } 53 | 54 | export type TripIDMap = Record; 55 | -------------------------------------------------------------------------------- /src/index.ts: -------------------------------------------------------------------------------- 1 | import * as yargs from "yargs"; 2 | import { Arguments } from "yargs"; 3 | import { Container } from "./Container"; 4 | import { toGTFSDate } from "./gtfs/calendar/gtfsDateUtils"; 5 | import { RouteType } from "./gtfs/GTFS"; 6 | 7 | const args = yargs.argv as Arguments<{ 8 | "transfer-distance": number, 9 | "no-extra-transfers": boolean, 10 | "no-date-filter": boolean, 11 | "stop-prefix": string, 12 | "remove-route-types": RouteType, 13 | "tmp": string 14 | }>; 15 | 16 | const inputs = args._.slice(0, args._.length - 1); 17 | const output = args._[args._.length - 1]; 18 | const transferDistance = args["extra-transfers"] === false ? 0 : (args["transfer-distance"] || 1.6); 19 | const stopPrefix = args["stop-prefix"] || ""; 20 | const removeRoutes = args["remove-route-types"] ? ("" + args["remove-route-types"]).split(",") : []; 21 | const tempFolder = args["tmp"] || "/tmp/gtfsmerge/"; 22 | const filterBeforeDate = args["date-filter"] === false ? undefined : toGTFSDate(new Date()); 23 | const container = new Container(); 24 | 25 | container 26 | .getMergeCommand(tempFolder, transferDistance, removeRoutes) 27 | .run(inputs, output, stopPrefix, filterBeforeDate) 28 | .catch(e => console.error(e)); 29 | -------------------------------------------------------------------------------- /src/sequence/MemoizedSequence.spec.ts: -------------------------------------------------------------------------------- 1 | import * as chai from "chai"; 2 | import { MemoizedSequence } from "./MemoizedSequence"; 3 | 4 | describe("MemoizedSequence", () => { 5 | 6 | it("returns a new ID for every new hash", () => { 7 | const sequence = new MemoizedSequence(); 8 | const hash1 = sequence.get("a"); 9 | const hash2 = sequence.get("b"); 10 | 11 | chai.expect(hash1).to.not.equal(hash2); 12 | }); 13 | 14 | it("returns the same ID for the same hash", () => { 15 | const sequence = new MemoizedSequence(); 16 | const hash1 = sequence.get("a"); 17 | const hash2 = sequence.get("a"); 18 | 19 | chai.expect(hash1).to.equal(hash2); 20 | }); 21 | 22 | it("lets you peek at the hashes", () => { 23 | const sequence = new MemoizedSequence(); 24 | sequence.get("a"); 25 | 26 | const seenA = sequence.haveSeen("a"); 27 | const seenB = sequence.haveSeen("b"); 28 | 29 | chai.expect(seenA).to.equal(true); 30 | chai.expect(seenB).to.equal(false); 31 | }); 32 | 33 | }); 34 | -------------------------------------------------------------------------------- /src/sequence/MemoizedSequence.ts: -------------------------------------------------------------------------------- 1 | 2 | /** 3 | * Generates a sequence number for each unique hash 4 | */ 5 | export class MemoizedSequence { 6 | private cache = {}; 7 | private current = 1; 8 | 9 | /** 10 | * If the hash has already been seen return the ID that was given for it, if not 11 | * return a the next number in the sequence. 12 | */ 13 | public get(hash: string): number { 14 | if (!this.haveSeen(hash)) { 15 | this.cache[hash] = this.current++; 16 | } 17 | 18 | return this.cache[hash]; 19 | } 20 | 21 | /** 22 | * Check whether we've seen the given hash 23 | */ 24 | public haveSeen(hash: string): boolean { 25 | return this.cache.hasOwnProperty(hash); 26 | } 27 | 28 | } 29 | -------------------------------------------------------------------------------- /src/sequence/Sequence.spec.ts: -------------------------------------------------------------------------------- 1 | import * as chai from "chai"; 2 | import { Sequence } from "./Sequence"; 3 | 4 | describe("Sequence", () => { 5 | 6 | it("returns a new ID on every call", () => { 7 | const sequence = new Sequence(); 8 | const id1 = sequence.next(); 9 | const id2 = sequence.next(); 10 | 11 | chai.expect(id1).to.equal(1); 12 | chai.expect(id2).to.equal(2); 13 | }); 14 | 15 | it("starts from a given number", () => { 16 | const sequence = new Sequence(100); 17 | const id1 = sequence.next(); 18 | const id2 = sequence.next(); 19 | 20 | chai.expect(id1).to.equal(100); 21 | chai.expect(id2).to.equal(101); 22 | }); 23 | 24 | }); 25 | -------------------------------------------------------------------------------- /src/sequence/Sequence.ts: -------------------------------------------------------------------------------- 1 | 2 | /** 3 | * Returns a sequence of numbers 4 | */ 5 | export class Sequence { 6 | 7 | constructor( 8 | private currentId: number = 1 9 | ) {} 10 | 11 | /** 12 | * Return the current ID then increment it 13 | */ 14 | public next(): number { 15 | return this.currentId++; 16 | } 17 | 18 | } 19 | -------------------------------------------------------------------------------- /src/zip/ZipOutput.ts: -------------------------------------------------------------------------------- 1 | import { exec } from "child_process"; 2 | 3 | export class ZipOutput { 4 | 5 | constructor( 6 | private readonly tempFolder: string 7 | ) {} 8 | 9 | public async write(outputFile: string): Promise { 10 | console.log("Writing " + outputFile); 11 | await exec(`zip -j ${outputFile} ${this.tempFolder}*.txt`, { maxBuffer: Number.MAX_SAFE_INTEGER }); 12 | } 13 | 14 | } 15 | -------------------------------------------------------------------------------- /tsconfig.json: -------------------------------------------------------------------------------- 1 | { 2 | "compilerOptions": { 3 | "moduleResolution": "node", 4 | "module": "commonjs", 5 | "target": "esnext", 6 | "sourceMap": false, 7 | "experimentalDecorators": true, 8 | "strict": true, 9 | "noImplicitAny": false, 10 | "declaration": true, 11 | "lib": [ 12 | "esnext", 13 | "dom" 14 | ] 15 | }, 16 | "exclude": [ 17 | "node_modules", 18 | "dist/" 19 | ] 20 | } 21 | 22 | -------------------------------------------------------------------------------- /tslint.json: -------------------------------------------------------------------------------- 1 | { 2 | "rules": { 3 | "align": [ 4 | true, 5 | "parameters", "statements" 6 | ], 7 | "ban": false, 8 | "class-name": true, 9 | "comment-format": [ 10 | true, 11 | "check-space" 12 | ], 13 | "curly": false, 14 | "eofline": false, 15 | "forin": false, 16 | "indent": [ true, "spaces" ], 17 | "interface-name": [true, "never-prefix"], 18 | "jsdoc-format": true, 19 | "jsx-no-lambda": false, 20 | "jsx-no-multiline-js": false, 21 | "label-position": true, 22 | "max-line-length": false, 23 | "member-ordering": false, 24 | "no-any": false, 25 | "no-arg": true, 26 | "no-bitwise": true, 27 | "no-console": false, 28 | "no-construct": true, 29 | "no-debugger": true, 30 | "no-duplicate-variable": true, 31 | "no-empty": false, 32 | "no-eval": true, 33 | "no-shadowed-variable": true, 34 | "no-string-literal": false, 35 | "no-switch-case-fall-through": true, 36 | "no-trailing-whitespace": false, 37 | "no-unused-expression": true, 38 | "one-line": [ 39 | true, 40 | "check-open-brace", 41 | "check-whitespace" 42 | ], 43 | "quotemark": [true, "double", "jsx-double"], 44 | "radix": true, 45 | "semicolon": [true, "always", "ignore-interfaces", "ignore-bound-class-methods"], 46 | "switch-default": true, 47 | 48 | "trailing-comma": [false], 49 | 50 | "triple-equals": [ true, "allow-null-check" ], 51 | "typedef": [ 52 | true, 53 | "parameter", 54 | "property-declaration" 55 | ], 56 | "typedef-whitespace": [ 57 | true, 58 | { 59 | "call-signature": "nospace", 60 | "index-signature": "nospace", 61 | "parameter": "nospace", 62 | "property-declaration": "nospace", 63 | "variable-declaration": "nospace" 64 | } 65 | ], 66 | "variable-name": [true, "ban-keywords", "check-format", "allow-pascal-case"], 67 | "whitespace": [ 68 | true, 69 | "check-branch", 70 | "check-decl", 71 | "check-operator", 72 | "check-separator", 73 | "check-type", 74 | "check-typecast" 75 | ] 76 | } 77 | } 78 | --------------------------------------------------------------------------------