mirror of https://github.com/espruino/BangleApps
73 lines
2.0 KiB
JavaScript
73 lines
2.0 KiB
JavaScript
/*
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* JS source adapted from https://github.com/lindell/JsBarcode
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2016 Johan Lindell (johan@lindell.me)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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const encode = require("cards.encode.js");
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const Barcode = require("cards.Barcode.js");
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// Standard start end and middle bits
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const SIDE_BIN = '101';
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const MIDDLE_BIN = '01010';
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// Base class for EAN8 & EAN13
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class EAN extends Barcode {
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constructor(data, options) {
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super(data, options);
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}
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leftText(from, to) {
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return this.text.substr(from, to);
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}
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leftEncode(data, structure) {
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return encode(data, structure);
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}
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rightText(from, to) {
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return this.text.substr(from, to);
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}
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rightEncode(data, structure) {
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return encode(data, structure);
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}
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encode() {
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const data = [
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SIDE_BIN,
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this.leftEncode(),
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MIDDLE_BIN,
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this.rightEncode(),
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SIDE_BIN
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];
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return {
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data: data.join(''),
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text: this.text
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};
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}
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}
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module.exports = EAN; |