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- 'use strict';
- 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;
- };
- }();
- import _encoder2 from './encoder'
- import _Barcode3 from '../Barcode.js'
- import _UPC from './UPC.js'
- 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/Universal_Product_Code#Encoding
- //
- // UPC-E documentation:
- // https://en.wikipedia.org/wiki/Universal_Product_Code#UPC-E
- var EXPANSIONS = ["XX00000XXX", "XX10000XXX", "XX20000XXX", "XXX00000XX", "XXXX00000X", "XXXXX00005", "XXXXX00006",
- "XXXXX00007", "XXXXX00008", "XXXXX00009"
- ];
- var PARITIES = [
- ["EEEOOO", "OOOEEE"],
- ["EEOEOO", "OOEOEE"],
- ["EEOOEO", "OOEEOE"],
- ["EEOOOE", "OOEEEO"],
- ["EOEEOO", "OEOOEE"],
- ["EOOEEO", "OEEOOE"],
- ["EOOOEE", "OEEEOO"],
- ["EOEOEO", "OEOEOE"],
- ["EOEOOE", "OEOEEO"],
- ["EOOEOE", "OEEOEO"]
- ];
- var UPCE = function(_Barcode) {
- _inherits(UPCE, _Barcode);
- function UPCE(data, options) {
- _classCallCheck(this, UPCE);
- var _this = _possibleConstructorReturn(this, (UPCE.__proto__ || Object.getPrototypeOf(UPCE)).call(this,
- data, options));
- // Code may be 6 or 8 digits;
- // A 7 digit code is ambiguous as to whether the extra digit
- // is a UPC-A check or number system digit.
- _this.isValid = false;
- if (data.search(/^[0-9]{6}$/) !== -1) {
- _this.middleDigits = data;
- _this.upcA = expandToUPCA(data, "0");
- _this.text = options.text || '' + _this.upcA[0] + data + _this.upcA[_this.upcA.length - 1];
- _this.isValid = true;
- } else if (data.search(/^[01][0-9]{7}$/) !== -1) {
- _this.middleDigits = data.substring(1, data.length - 1);
- _this.upcA = expandToUPCA(_this.middleDigits, data[0]);
- if (_this.upcA[_this.upcA.length - 1] === data[data.length - 1]) {
- _this.isValid = true;
- } else {
- // checksum mismatch
- return _possibleConstructorReturn(_this);
- }
- } else {
- return _possibleConstructorReturn(_this);
- }
- _this.displayValue = options.displayValue;
- // Make sure the font is not bigger than the space between the guard bars
- if (options.fontSize > options.width * 10) {
- _this.fontSize = options.width * 10;
- } else {
- _this.fontSize = options.fontSize;
- }
- // Make the guard bars go down half the way of the text
- _this.guardHeight = options.height + _this.fontSize / 2 + options.textMargin;
- return _this;
- }
- _createClass(UPCE, [{
- key: 'valid',
- value: function valid() {
- return this.isValid;
- }
- }, {
- key: 'encode',
- value: function encode() {
- if (this.options.flat) {
- return this.flatEncoding();
- } else {
- return this.guardedEncoding();
- }
- }
- }, {
- key: 'flatEncoding',
- value: function flatEncoding() {
- var result = "";
- result += "101";
- result += this.encodeMiddleDigits();
- result += "010101";
- return {
- data: result,
- text: this.text
- };
- }
- }, {
- key: 'guardedEncoding',
- value: function guardedEncoding() {
- var result = [];
- // Add the UPC-A number system digit beneath the quiet zone
- if (this.displayValue) {
- result.push({
- data: "00000000",
- text: this.text[0],
- options: {
- textAlign: "left",
- fontSize: this.fontSize
- }
- });
- }
- // Add the guard bars
- result.push({
- data: "101",
- options: {
- height: this.guardHeight
- }
- });
- // Add the 6 UPC-E digits
- result.push({
- data: this.encodeMiddleDigits(),
- text: this.text.substring(1, 7),
- options: {
- fontSize: this.fontSize
- }
- });
- // Add the end bits
- result.push({
- data: "010101",
- options: {
- height: this.guardHeight
- }
- });
- // Add the UPC-A check digit beneath the quiet zone
- if (this.displayValue) {
- result.push({
- data: "00000000",
- text: this.text[7],
- options: {
- textAlign: "right",
- fontSize: this.fontSize
- }
- });
- }
- return result;
- }
- }, {
- key: 'encodeMiddleDigits',
- value: function encodeMiddleDigits() {
- var numberSystem = this.upcA[0];
- var checkDigit = this.upcA[this.upcA.length - 1];
- var parity = PARITIES[parseInt(checkDigit)][parseInt(numberSystem)];
- return (0, _encoder2)(this.middleDigits, parity);
- }
- }]);
- return UPCE;
- }(_Barcode3);
- function expandToUPCA(middleDigits, numberSystem) {
- var lastUpcE = parseInt(middleDigits[middleDigits.length - 1]);
- var expansion = EXPANSIONS[lastUpcE];
- var result = "";
- var digitIndex = 0;
- for (var i = 0; i < expansion.length; i++) {
- var c = expansion[i];
- if (c === 'X') {
- result += middleDigits[digitIndex++];
- } else {
- result += c;
- }
- }
- result = '' + numberSystem + result;
- return '' + result + (0, _UPC.checksum)(result);
- }
- export default UPCE;
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