/*
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* Copyright 2008 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*namespace com.google.zxing.oned {*/
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import BarcodeFormat from '../BarcodeFormat';
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import Result from '../Result';
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import NotFoundException from '../NotFoundException';
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import EAN13Reader from './EAN13Reader';
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import UPCEANReader from './UPCEANReader';
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/**
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* Encapsulates functionality and implementation that is common to all families
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* of one-dimensional barcodes.
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*
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* @author dswitkin@google.com (Daniel Switkin)
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* @author Sean Owen
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* @author sam2332 (Sam Rudloff)
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*
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* @source https://github.com/zxing/zxing/blob/3c96923276dd5785d58eb970b6ba3f80d36a9505/core/src/main/java/com/google/zxing/oned/UPCAReader.java
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*
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* @experimental
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*/
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export default class UPCAReader extends UPCEANReader {
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constructor() {
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super(...arguments);
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this.ean13Reader = new EAN13Reader();
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}
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// @Override
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getBarcodeFormat() {
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return BarcodeFormat.UPC_A;
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}
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// Note that we don't try rotation without the try harder flag, even if rotation was supported.
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// @Override
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decode(image, hints) {
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return this.maybeReturnResult(this.ean13Reader.decode(image));
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}
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// @Override
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decodeRow(rowNumber, row, hints) {
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return this.maybeReturnResult(this.ean13Reader.decodeRow(rowNumber, row, hints));
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}
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// @Override
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decodeMiddle(row, startRange, resultString) {
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return this.ean13Reader.decodeMiddle(row, startRange, resultString);
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}
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maybeReturnResult(result) {
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let text = result.getText();
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if (text.charAt(0) === '0') {
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let upcaResult = new Result(text.substring(1), null, null, result.getResultPoints(), BarcodeFormat.UPC_A);
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if (result.getResultMetadata() != null) {
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upcaResult.putAllMetadata(result.getResultMetadata());
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}
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return upcaResult;
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}
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else {
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throw new NotFoundException();
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}
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}
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reset() {
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this.ean13Reader.reset();
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}
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}
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