dlms-protocol/lib/messages/ReadRequest.js

DLMS Protocol parser for JavaScript

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
require("core-js/modules/es.parse-int.js");
require("core-js/modules/es.regexp.exec.js");
require("core-js/modules/es.regexp.to-string.js");
require("core-js/modules/es.string.match.js");
require("core-js/modules/esnext.iterator.map.js");
require("core-js/modules/web.dom-collections.iterator.js");
var _MessageType = _interopRequireDefault(require("../enum/MessageType"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
class ReadRequest {
  constructor() {
    let variableNames = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;
    let variableNamesString = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;
    this.qty = 0;
    this.variableNames = [];
    this.value = [];
    this.variableParameters = [];
    if (Array.isArray(variableNames)) {
      this.insertData(variableNames);
    } else if (typeof variableNamesString === 'string') {
      this.qty = 1;
      this.variableParameters = this._stringToBytes(variableNamesString);
    }
  }
  insertData(variableNames) {
    this.qty = variableNames.length;
    this.variableNames = [...variableNames];
  }
  getBytes() {
    const result = [];
    result.push(_MessageType.default.READ_REQUEST);
    result.push(this.qty);
    if (this.variableNames.length > 0) {
      for (const variable of this.variableNames) {
        result.push(0x02); // Indicator byte
        result.push(variable >> 8 & 0xFF, variable & 0xFF); // Convert variable to two bytes
      }
    } else if (this.variableParameters.length > 0) {
      result.push(0x02); // Indicator byte
      result.push(...this.variableParameters);
    }
    this.value = [...result];
    return result;
  }
  getHexString() {
    return this.value.map(byte => byte.toString(16).toUpperCase().padStart(2, '0')).join(' ');
  }
  _stringToBytes(hexString) {
    return hexString.match(/.{1,2}/g).map(byte => parseInt(byte, 16));
  }
}
exports.default = ReadRequest;