transgate/dist/lib/gate/readline_stream.js

Agent-based task flow framework

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const readline_1 = __importDefault(require("readline"));
const buffer_1 = require("./buffer");
/**
 * Readline stream Gate for Input
 */
class ReadLineStreamGate {
    /**
     * @param  {stream.Readable} readStream - readable stream
     */
    constructor(readStream) {
        this._buffer = new buffer_1.ItemBuffer();
        readline_1.default.createInterface({
            input: readStream,
            crlfDelay: Infinity,
        })
            .on('line', line => {
            this._buffer.write(this._parse(line));
        })
            .on('close', () => {
            this._buffer.write(null);
        });
    }
    /**
     * @return {Promise<object>} - A promise that resolves the item when a line can be read
     */
    receive() {
        return this._buffer.read();
    }
}
exports.ReadLineStreamGate = ReadLineStreamGate;