mirror of
https://github.com/starovoid/rxing.git
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115 lines
3.8 KiB
Java
115 lines
3.8 KiB
Java
/*
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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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package com.google.zxing.oned;
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import com.google.zxing.BarcodeFormat;
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import com.google.zxing.DecodeHintType;
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import com.google.zxing.NotFoundException;
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import com.google.zxing.Reader;
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import com.google.zxing.ReaderException;
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import com.google.zxing.RXingResult;
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import com.google.zxing.common.BitArray;
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import com.google.zxing.oned.rss.RSS14Reader;
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import com.google.zxing.oned.rss.expanded.RSSExpandedReader;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Map;
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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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*/
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public final class MultiFormatOneDReader extends OneDReader {
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private static final OneDReader[] EMPTY_ONED_ARRAY = new OneDReader[0];
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private final OneDReader[] readers;
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public MultiFormatOneDReader(Map<DecodeHintType,?> hints) {
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@SuppressWarnings("unchecked")
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Collection<BarcodeFormat> possibleFormats = hints == null ? null :
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(Collection<BarcodeFormat>) hints.get(DecodeHintType.POSSIBLE_FORMATS);
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boolean useCode39CheckDigit = hints != null &&
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hints.get(DecodeHintType.ASSUME_CODE_39_CHECK_DIGIT) != null;
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Collection<OneDReader> readers = new ArrayList<>();
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if (possibleFormats != null) {
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if (possibleFormats.contains(BarcodeFormat.EAN_13) ||
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possibleFormats.contains(BarcodeFormat.UPC_A) ||
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possibleFormats.contains(BarcodeFormat.EAN_8) ||
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possibleFormats.contains(BarcodeFormat.UPC_E)) {
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readers.add(new MultiFormatUPCEANReader(hints));
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}
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if (possibleFormats.contains(BarcodeFormat.CODE_39)) {
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readers.add(new Code39Reader(useCode39CheckDigit));
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}
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if (possibleFormats.contains(BarcodeFormat.CODE_93)) {
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readers.add(new Code93Reader());
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}
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if (possibleFormats.contains(BarcodeFormat.CODE_128)) {
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readers.add(new Code128Reader());
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}
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if (possibleFormats.contains(BarcodeFormat.ITF)) {
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readers.add(new ITFReader());
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}
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if (possibleFormats.contains(BarcodeFormat.CODABAR)) {
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readers.add(new CodaBarReader());
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}
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if (possibleFormats.contains(BarcodeFormat.RSS_14)) {
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readers.add(new RSS14Reader());
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}
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if (possibleFormats.contains(BarcodeFormat.RSS_EXPANDED)) {
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readers.add(new RSSExpandedReader());
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}
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}
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if (readers.isEmpty()) {
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readers.add(new MultiFormatUPCEANReader(hints));
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readers.add(new Code39Reader());
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readers.add(new CodaBarReader());
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readers.add(new Code93Reader());
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readers.add(new Code128Reader());
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readers.add(new ITFReader());
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readers.add(new RSS14Reader());
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readers.add(new RSSExpandedReader());
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}
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this.readers = readers.toArray(EMPTY_ONED_ARRAY);
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}
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@Override
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public RXingResult decodeRow(int rowNumber,
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BitArray row,
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Map<DecodeHintType,?> hints) throws NotFoundException {
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for (OneDReader reader : readers) {
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try {
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return reader.decodeRow(rowNumber, row, hints);
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} catch (ReaderException re) {
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// continue
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}
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}
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throw NotFoundException.getNotFoundInstance();
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}
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@Override
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public void reset() {
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for (Reader reader : readers) {
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reader.reset();
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}
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}
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}
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