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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'
- 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
- var UPC = function(_Barcode) {
- function UPC(data, options) {
- _classCallCheck(this, UPC);
- // Add checksum if it does not exist
- if (data.search(/^[0-9]{11}$/) !== -1) {
- data += checksum(data);
- }
- var _this = _possibleConstructorReturn(this, (UPC.__proto__ || Object.getPrototypeOf(UPC)).call(this, data,
- options));
- _this.displayValue = options.displayValue;
- // Make sure the font is not bigger than the space between the guard bars
- if (options.fontSize > options.width * 10) {
- _this.fontSize = options.width * 10;
- } else {
- _this.fontSize = options.fontSize;
- }
- // Make the guard bars go down half the way of the text
- _this.guardHeight = options.height + _this.fontSize / 2 + options.textMargin;
- return _this;
- }
- _createClass(UPC, [{
- key: "valid",
- value: function valid() {
- return this.data.search(/^[0-9]{12}$/) !== -1 && this.data[11] == checksum(this.data);
- }
- }, {
- 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 += (0, _encoder2)(this.data.substr(0, 6), "LLLLLL");
- result += "01010";
- result += (0, _encoder2)(this.data.substr(6, 6), "RRRRRR");
- result += "101";
- return {
- data: result,
- text: this.text
- };
- }
- }, {
- key: "guardedEncoding",
- value: function guardedEncoding() {
- var result = [];
- // Add the first digit
- if (this.displayValue) {
- result.push({
- data: "00000000",
- text: this.text.substr(0, 1),
- options: {
- textAlign: "left",
- fontSize: this.fontSize
- }
- });
- }
- // Add the guard bars
- result.push({
- data: "101" + (0, _encoder2)(this.data[0], "L"),
- options: {
- height: this.guardHeight
- }
- });
- // Add the left side
- result.push({
- data: (0, _encoder2)(this.data.substr(1, 5), "LLLLL"),
- text: this.text.substr(1, 5),
- options: {
- fontSize: this.fontSize
- }
- });
- // Add the middle bits
- result.push({
- data: "01010",
- options: {
- height: this.guardHeight
- }
- });
- // Add the right side
- result.push({
- data: (0, _encoder2)(this.data.substr(6, 5), "RRRRR"),
- text: this.text.substr(6, 5),
- options: {
- fontSize: this.fontSize
- }
- });
- // Add the end bits
- result.push({
- data: (0, _encoder2)(this.data[11], "R") + "101",
- options: {
- height: this.guardHeight
- }
- });
- // Add the last digit
- if (this.displayValue) {
- result.push({
- data: "00000000",
- text: this.text.substr(11, 1),
- options: {
- textAlign: "right",
- fontSize: this.fontSize
- }
- });
- }
- return result;
- }
- }]);
- return UPC;
- }(_Barcode3);
- // Calulate the checksum digit
- // https://en.wikipedia.org/wiki/International_Article_Number_(EAN)#Calculation_of_checksum_digit
- function checksum(number) {
- var result = 0;
- var i;
- for (i = 1; i < 11; i += 2) {
- result += parseInt(number[i]);
- }
- for (i = 0; i < 11; i += 2) {
- result += parseInt(number[i]) * 3;
- }
- return (10 - result % 10) % 10;
- }
- export default {
- UPC,
- checksum
- };
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