rxpoweredup
Version:
A Typescript RxJS-based library for controlling LEGO Powered UP hubs & peripherals.
31 lines (30 loc) • 1.43 kB
JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
import { injectable } from 'tsyringe';
import { concatUintArraysToUint8Array } from '../../helpers';
let PacketBuilder = class PacketBuilder {
messageTypeLength = 1;
buildPacket(message) {
const header = this.composeHeader(message);
return concatUintArraysToUint8Array(header, message.payload);
}
composeHeader(message) {
if (this.getPayloadLengthPaddedWithMessageType(message) < 127) {
return Uint8Array.from([message.payload.byteLength, 0x00, message.header.messageType]);
}
else {
throw new Error('Long messages are not supported yet');
}
}
getPayloadLengthPaddedWithMessageType(message) {
return message.payload.length + this.messageTypeLength;
}
};
PacketBuilder = __decorate([
injectable()
], PacketBuilder);
export { PacketBuilder };