lindell / JsBarcode

import EANencoder from './ean_encoder.js';

class EAN5{

	constructor(string){

		this.string = string;

		// Define the EAN-13 structure

		this.structure = [

			"GGLLL",

			"GLGLL",

			"GLLGL",

			"GLLLG",

			"LGGLL",

			"LLGGL",

			"LLLGG",

			"LGLGL",

			"LGLLG",

			"LLGLG"

		];

	}

	valid(){

		return this.string.search(/^[0-9]{5}$/) !== -1;

	}

	encode(){

		var encoder = new EANencoder();

		var checksum = this.checksum();

		// Start bits

		var result = "1011";

		// Use normal ean encoding with 01 in between all digits

		result += encoder.encode(this.string, this.structure[checksum], "01");

		return {

			data: result,

			text: this.string

		};

	}

	checksum(){

		var result = 0;

		result += parseInt(this.string[0]) * 3;

		result += parseInt(this.string[1]) * 9;

		result += parseInt(this.string[2]) * 3;

		result += parseInt(this.string[3]) * 9;

		result += parseInt(this.string[4]) * 3;

		return result % 10;

	}

}

export default EAN5;