jsbarcode2/bin/barcodes/EAN_UPC/EAN8.js

JsBarcode is a customizable barcode generator with support for multiple barcode formats.

"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 _ean_encoder = require("./ean_encoder.js");

var _ean_encoder2 = _interopRequireDefault(_ean_encoder);

var _Barcode2 = require("../Barcode.js");

var _Barcode3 = _interopRequireDefault(_Barcode2);

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:
// http://www.barcodeisland.com/ean8.phtml

var EAN8 = function (_Barcode) {
	_inherits(EAN8, _Barcode);

	function EAN8(data, options) {
		_classCallCheck(this, EAN8);

		// Add checksum if it does not exist
		if (data.search(/^[0-9]{7}$/) !== -1) {
			data += checksum(data);
		}

		return _possibleConstructorReturn(this, (EAN8.__proto__ || Object.getPrototypeOf(EAN8)).call(this, data, options));
	}

	_createClass(EAN8, [{
		key: "valid",
		value: function valid() {
			return this.data.search(/^[0-9]{8}$/) !== -1 && this.data[7] == checksum(this.data);
		}
	}, {
		key: "encode",
		value: function encode() {
			var encoder = new _ean_encoder2.default();

			// Create the return variable
			var result = "";

			// Get the number to be encoded on the left side of the EAN code
			var leftSide = this.data.substr(0, 4);

			// Get the number to be encoded on the right side of the EAN code
			var rightSide = this.data.substr(4, 4);

			// Add the start bits
			result += encoder.startBin;

			// Add the left side
			result += encoder.encode(leftSide, "LLLL");

			// Add the middle bits
			result += encoder.middleBin;

			// Add the right side
			result += encoder.encode(rightSide, "RRRR");

			// Add the end bits
			result += encoder.endBin;

			return {
				data: result,
				text: this.text
			};
		}
	}]);

	return EAN8;
}(_Barcode3.default);

// Calulate the checksum digit


function checksum(number) {
	var result = 0;

	var i;
	for (i = 0; i < 7; i += 2) {
		result += parseInt(number[i]) * 3;
	}

	for (i = 1; i < 7; i += 2) {
		result += parseInt(number[i]);
	}

	return (10 - result % 10) % 10;
}

exports.default = EAN8;