104 lines
4.1 KiB
JavaScript
104 lines
4.1 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.CODE39 = undefined;
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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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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/Code_39#Encoding
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var CODE39 = function (_Barcode) {
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_inherits(CODE39, _Barcode);
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function CODE39(data, options) {
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_classCallCheck(this, CODE39);
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data = data.toUpperCase();
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// Calculate mod43 checksum if enabled
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if (options.mod43) {
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data += getCharacter(mod43checksum(data));
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}
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return _possibleConstructorReturn(this, (CODE39.__proto__ || Object.getPrototypeOf(CODE39)).call(this, data, options));
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}
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_createClass(CODE39, [{
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key: "encode",
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value: function encode() {
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// First character is always a *
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var result = getEncoding("*");
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// Take every character and add the binary representation to the result
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for (var i = 0; i < this.data.length; i++) {
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result += getEncoding(this.data[i]) + "0";
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}
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// Last character is always a *
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result += getEncoding("*");
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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: "valid",
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value: function valid() {
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return this.data.search(/^[0-9A-Z\-\.\ \$\/\+\%]+$/) !== -1;
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}
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}]);
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return CODE39;
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}(_Barcode3.default);
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// All characters. The position in the array is the (checksum) value
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var characters = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "-", ".", " ", "$", "/", "+", "%", "*"];
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// The decimal representation of the characters, is converted to the
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// corresponding binary with the getEncoding function
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var encodings = [20957, 29783, 23639, 30485, 20951, 29813, 23669, 20855, 29789, 23645, 29975, 23831, 30533, 22295, 30149, 24005, 21623, 29981, 23837, 22301, 30023, 23879, 30545, 22343, 30161, 24017, 21959, 30065, 23921, 22385, 29015, 18263, 29141, 17879, 29045, 18293, 17783, 29021, 18269, 17477, 17489, 17681, 20753, 35770];
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// Get the binary representation of a character by converting the encodings
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// from decimal to binary
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function getEncoding(character) {
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return getBinary(characterValue(character));
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}
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function getBinary(characterValue) {
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return encodings[characterValue].toString(2);
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}
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function getCharacter(characterValue) {
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return characters[characterValue];
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}
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function characterValue(character) {
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return characters.indexOf(character);
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}
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function mod43checksum(data) {
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var checksum = 0;
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for (var i = 0; i < data.length; i++) {
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checksum += characterValue(data[i]);
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}
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checksum = checksum % 43;
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return checksum;
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}
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exports.CODE39 = CODE39; |