69 lines
2.5 KiB
JavaScript
69 lines
2.5 KiB
JavaScript
import Rx from 'rxjs';
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import { map } from 'rxjs/operators';
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import * as defaults from '../defaults.js';
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/**
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* Sends input from concurrently through to commands.
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*
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* Input can start with a command identifier, in which case it will be sent to that specific command.
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* For instance, `0:bla` will send `bla` to command at index `0`, and `server:stop` will send `stop`
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* to command with name `server`.
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*
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* If the input doesn't start with a command identifier, it is then always sent to the default target.
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*/
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export class InputHandler {
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logger;
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defaultInputTarget;
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inputStream;
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pauseInputStreamOnFinish;
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constructor({ defaultInputTarget, inputStream, pauseInputStreamOnFinish, logger, }) {
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this.logger = logger;
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this.defaultInputTarget = defaultInputTarget || defaults.defaultInputTarget;
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this.inputStream = inputStream;
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this.pauseInputStreamOnFinish = pauseInputStreamOnFinish !== false;
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}
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handle(commands) {
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const { inputStream } = this;
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if (!inputStream) {
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return { commands };
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}
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const commandsMap = new Map();
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for (const command of commands) {
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commandsMap.set(command.index.toString(), command);
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commandsMap.set(command.name, command);
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}
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Rx.fromEvent(inputStream, 'data')
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.pipe(map((data) => String(data)))
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.subscribe((data) => {
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const dataParts = data.split(/:(.+)/s);
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let target = dataParts[0];
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let command = commandsMap.get(target);
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let input;
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if (dataParts.length > 1 && command) {
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input = dataParts[1];
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}
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else {
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// If `target` does not match a registered command,
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// fallback to `defaultInputTarget` and forward the whole input data
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target = this.defaultInputTarget.toString();
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command = commandsMap.get(target);
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input = data;
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}
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if (command?.stdin) {
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command.stdin.write(input);
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}
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else {
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this.logger.logGlobalEvent(`Unable to find command "${target}", or it has no stdin open\n`);
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}
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});
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return {
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commands,
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onFinish: () => {
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if (this.pauseInputStreamOnFinish) {
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// https://github.com/kimmobrunfeldt/concurrently/issues/252
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inputStream.pause();
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}
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},
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};
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}
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}
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