2 * Licensed under the Apache License, Version 2.0 (the "License");
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3 * you may not use this file except in compliance with the License.
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4 * You may obtain a copy of the License at
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6 * http://www.apache.org/licenses/LICENSE-2.0
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8 * Unless required by applicable law or agreed to in writing, software
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9 * distributed under the License is distributed on an "AS IS" BASIS,
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10 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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11 * See the License for the specific language governing permissions and
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12 * limitations under the License.
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14 namespace com.google.zxing.oned
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17 * @author dswitkin@google.com (Daniel Switkin)
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21 using com.google.zxing.common;
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23 public sealed class UPCAReader : UPCEANReader
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25 private UPCEANReader ean13Reader = new EAN13Reader();
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27 public Result decodeRow(int rowNumber, BitArray row, int[] startGuardRange) {
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28 return maybeReturnResult(ean13Reader.decodeRow(rowNumber, row, startGuardRange));
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31 public Result decodeRow(int rowNumber, BitArray row, System.Collections.Hashtable hints) {
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32 return maybeReturnResult(ean13Reader.decodeRow(rowNumber, row, hints));
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35 public Result decode(MonochromeBitmapSource image) {
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36 return maybeReturnResult(ean13Reader.decode(image));
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39 public Result decode(MonochromeBitmapSource image, System.Collections.Hashtable hints) {
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40 return maybeReturnResult(ean13Reader.decode(image, hints));
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43 private static Result maybeReturnResult(Result result) {
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44 string text = result.getText();
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45 if (text[0] == '0') {
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46 return new Result(text.Substring(1), null, result.getResultPoints(), BarcodeFormat.UPC_A);
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48 throw new ReaderException();
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