@zxing/library
Version:
TypeScript port of ZXing multi-format 1D/2D barcode image processing library.
99 lines (98 loc) • 4.23 kB
JavaScript
/*
* Copyright 2008 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*namespace com.google.zxing.oned {*/
import BarcodeFormat from '../BarcodeFormat';
import DecodeHintType from '../DecodeHintType';
import NotFoundException from '../NotFoundException';
import Code128Reader from './Code128Reader';
import Code39Reader from './Code39Reader';
import Code93Reader from './Code93Reader';
import ITFReader from './ITFReader';
import MultiFormatUPCEANReader from './MultiFormatUPCEANReader';
import OneDReader from './OneDReader';
import CodaBarReader from './CodaBarReader';
import RSSExpandedReader from './rss/expanded/RSSExpandedReader';
import RSS14Reader from './rss/RSS14Reader';
/**
* @author Daniel Switkin <dswitkin@google.com>
* @author Sean Owen
*/
export default class MultiFormatOneDReader extends OneDReader {
constructor(hints) {
super();
this.readers = [];
const possibleFormats = !hints ? null : hints.get(DecodeHintType.POSSIBLE_FORMATS);
const useCode39CheckDigit = hints && hints.get(DecodeHintType.ASSUME_CODE_39_CHECK_DIGIT) !== undefined;
const useCode39ExtendedMode = hints && hints.get(DecodeHintType.ENABLE_CODE_39_EXTENDED_MODE) !== undefined;
if (possibleFormats) {
if (possibleFormats.includes(BarcodeFormat.EAN_13) ||
possibleFormats.includes(BarcodeFormat.UPC_A) ||
possibleFormats.includes(BarcodeFormat.EAN_8) ||
possibleFormats.includes(BarcodeFormat.UPC_E)) {
this.readers.push(new MultiFormatUPCEANReader(hints));
}
if (possibleFormats.includes(BarcodeFormat.CODE_39)) {
this.readers.push(new Code39Reader(useCode39CheckDigit, useCode39ExtendedMode));
}
if (possibleFormats.includes(BarcodeFormat.CODE_93)) {
this.readers.push(new Code93Reader());
}
if (possibleFormats.includes(BarcodeFormat.CODE_128)) {
this.readers.push(new Code128Reader());
}
if (possibleFormats.includes(BarcodeFormat.ITF)) {
this.readers.push(new ITFReader());
}
if (possibleFormats.includes(BarcodeFormat.CODABAR)) {
this.readers.push(new CodaBarReader());
}
if (possibleFormats.includes(BarcodeFormat.RSS_14)) {
this.readers.push(new RSS14Reader());
}
if (possibleFormats.includes(BarcodeFormat.RSS_EXPANDED)) {
console.warn('RSS Expanded reader IS NOT ready for production yet! use at your own risk.');
this.readers.push(new RSSExpandedReader());
}
}
if (this.readers.length === 0) {
this.readers.push(new MultiFormatUPCEANReader(hints));
this.readers.push(new Code39Reader());
// this.readers.push(new CodaBarReader());
this.readers.push(new Code93Reader());
this.readers.push(new MultiFormatUPCEANReader(hints));
this.readers.push(new Code128Reader());
this.readers.push(new ITFReader());
this.readers.push(new RSS14Reader());
// this.readers.push(new RSSExpandedReader());
}
}
// @Override
decodeRow(rowNumber, row, hints) {
for (let i = 0; i < this.readers.length; i++) {
try {
return this.readers[i].decodeRow(rowNumber, row, hints);
}
catch (re) {
// continue
}
}
throw new NotFoundException();
}
// @Override
reset() {
this.readers.forEach(reader => reader.reset());
}
}