"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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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; }; }();
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exports.checksum = checksum;
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var _encoder = require("./encoder");
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var _encoder2 = _interopRequireDefault(_encoder);
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var _Barcode2 = require("../Barcode.js");
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var _Barcode3 = _interopRequireDefault(_Barcode2);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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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; }
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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:
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// https://en.wikipedia.org/wiki/Universal_Product_Code#Encoding
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var UPC = function (_Barcode) {
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_inherits(UPC, _Barcode);
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function UPC(data, options) {
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_classCallCheck(this, UPC);
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// Add checksum if it does not exist
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if (data.search(/^[0-9]{11}$/) !== -1) {
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data += checksum(data);
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}
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var _this = _possibleConstructorReturn(this, (UPC.__proto__ || Object.getPrototypeOf(UPC)).call(this, data, options));
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_this.displayValue = options.displayValue;
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// Make sure the font is not bigger than the space between the guard bars
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if (options.fontSize > options.width * 10) {
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_this.fontSize = options.width * 10;
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} else {
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_this.fontSize = options.fontSize;
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}
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// Make the guard bars go down half the way of the text
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_this.guardHeight = options.height + _this.fontSize / 2 + options.textMargin;
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return _this;
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}
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_createClass(UPC, [{
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key: "valid",
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value: function valid() {
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return this.data.search(/^[0-9]{12}$/) !== -1 && this.data[11] == checksum(this.data);
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}
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}, {
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key: "encode",
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value: function encode() {
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if (this.options.flat) {
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return this.flatEncoding();
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} else {
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return this.guardedEncoding();
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}
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}
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}, {
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key: "flatEncoding",
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value: function flatEncoding() {
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var result = "";
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result += "101";
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result += (0, _encoder2.default)(this.data.substr(0, 6), "LLLLLL");
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result += "01010";
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result += (0, _encoder2.default)(this.data.substr(6, 6), "RRRRRR");
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result += "101";
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return {
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data: result,
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text: this.text
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};
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}
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}, {
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key: "guardedEncoding",
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value: function guardedEncoding() {
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var result = [];
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// Add the first digit
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if (this.displayValue) {
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result.push({
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data: "00000000",
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text: this.text.substr(0, 1),
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options: { textAlign: "left", fontSize: this.fontSize }
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});
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}
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// Add the guard bars
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result.push({
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data: "101" + (0, _encoder2.default)(this.data[0], "L"),
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options: { height: this.guardHeight }
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});
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// Add the left side
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result.push({
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data: (0, _encoder2.default)(this.data.substr(1, 5), "LLLLL"),
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text: this.text.substr(1, 5),
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options: { fontSize: this.fontSize }
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});
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// Add the middle bits
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result.push({
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data: "01010",
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options: { height: this.guardHeight }
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});
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// Add the right side
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result.push({
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data: (0, _encoder2.default)(this.data.substr(6, 5), "RRRRR"),
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text: this.text.substr(6, 5),
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options: { fontSize: this.fontSize }
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});
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// Add the end bits
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result.push({
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data: (0, _encoder2.default)(this.data[11], "R") + "101",
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options: { height: this.guardHeight }
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});
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// Add the last digit
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if (this.displayValue) {
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result.push({
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data: "00000000",
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text: this.text.substr(11, 1),
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options: { textAlign: "right", fontSize: this.fontSize }
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});
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}
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return result;
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}
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}]);
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return UPC;
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}(_Barcode3.default);
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// Calulate the checksum digit
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// https://en.wikipedia.org/wiki/International_Article_Number_(EAN)#Calculation_of_checksum_digit
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function checksum(number) {
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var result = 0;
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var i;
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for (i = 1; i < 11; i += 2) {
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result += parseInt(number[i]);
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}
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for (i = 0; i < 11; i += 2) {
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result += parseInt(number[i]) * 3;
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}
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return (10 - result % 10) % 10;
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}
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exports.default = UPC;
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