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- 'use strict';
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
- var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };
- var _constants = require('./constants');
- var _EAN2 = require('./EAN');
- var _EAN3 = _interopRequireDefault(_EAN2);
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
- function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
- function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } // Encoding documentation:
- // https://en.wikipedia.org/wiki/International_Article_Number_(EAN)#Binary_encoding_of_data_digits_into_EAN-13_barcode
- // Calculate the checksum digit
- // https://en.wikipedia.org/wiki/International_Article_Number_(EAN)#Calculation_of_checksum_digit
- var checksum = function checksum(number) {
- var res = number.substr(0, 12).split('').map(function (n) {
- return +n;
- }).reduce(function (sum, a, idx) {
- return idx % 2 ? sum + a * 3 : sum + a;
- }, 0);
- return (10 - res % 10) % 10;
- };
- var EAN13 = function (_EAN) {
- _inherits(EAN13, _EAN);
- function EAN13(data, options) {
- _classCallCheck(this, EAN13);
- // Add checksum if it does not exist
- if (data.search(/^[0-9]{12}$/) !== -1) {
- data += checksum(data);
- }
- // Adds a last character to the end of the barcode
- var _this = _possibleConstructorReturn(this, (EAN13.__proto__ || Object.getPrototypeOf(EAN13)).call(this, data, options));
- _this.lastChar = options.lastChar;
- return _this;
- }
- _createClass(EAN13, [{
- key: 'valid',
- value: function valid() {
- return this.data.search(/^[0-9]{13}$/) !== -1 && +this.data[12] === checksum(this.data);
- }
- }, {
- key: 'leftText',
- value: function leftText() {
- return _get(EAN13.prototype.__proto__ || Object.getPrototypeOf(EAN13.prototype), 'leftText', this).call(this, 1, 6);
- }
- }, {
- key: 'leftEncode',
- value: function leftEncode() {
- var data = this.data.substr(1, 6);
- var structure = _constants.EAN13_STRUCTURE[this.data[0]];
- return _get(EAN13.prototype.__proto__ || Object.getPrototypeOf(EAN13.prototype), 'leftEncode', this).call(this, data, structure);
- }
- }, {
- key: 'rightText',
- value: function rightText() {
- return _get(EAN13.prototype.__proto__ || Object.getPrototypeOf(EAN13.prototype), 'rightText', this).call(this, 7, 6);
- }
- }, {
- key: 'rightEncode',
- value: function rightEncode() {
- var data = this.data.substr(7, 6);
- return _get(EAN13.prototype.__proto__ || Object.getPrototypeOf(EAN13.prototype), 'rightEncode', this).call(this, data, 'RRRRRR');
- }
- // The "standard" way of printing EAN13 barcodes with guard bars
- }, {
- key: 'encodeGuarded',
- value: function encodeGuarded() {
- var data = _get(EAN13.prototype.__proto__ || Object.getPrototypeOf(EAN13.prototype), 'encodeGuarded', this).call(this);
- // Extend data with left digit & last character
- if (this.options.displayValue) {
- data.unshift({
- data: '000000000000',
- text: this.text.substr(0, 1),
- options: { textAlign: 'left', fontSize: this.fontSize }
- });
- if (this.options.lastChar) {
- data.push({
- data: '00'
- });
- data.push({
- data: '00000',
- text: this.options.lastChar,
- options: { fontSize: this.fontSize }
- });
- }
- }
- return data;
- }
- }]);
- return EAN13;
- }(_EAN3.default);
- exports.default = EAN13;
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