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Core barcode encoding/decoding library
/*
* Copyright 2007 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.
*/
package com.google.zxing.client.result;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.Result;
import com.google.zxing.oned.UPCEReader;
/**
* Parses strings of digits that represent a UPC code.
*
* @author [email protected] (Daniel Switkin)
*/
public final class ProductResultParser extends ResultParser {
// Treat all UPC and EAN variants as UPCs, in the sense that they are all product barcodes.
@Override
public ProductParsedResult parse(Result result) {
BarcodeFormat format = result.getBarcodeFormat();
if (!(format == BarcodeFormat.UPC_A || format == BarcodeFormat.UPC_E ||
format == BarcodeFormat.EAN_8 || format == BarcodeFormat.EAN_13)) {
return null;
}
String rawText = getMassagedText(result);
if (!isStringOfDigits(rawText, rawText.length())) {
return null;
}
// Not actually checking the checksum again here
String normalizedProductID;
// Expand UPC-E for purposes of searching
if (format == BarcodeFormat.UPC_E && rawText.length() == 8) {
normalizedProductID = UPCEReader.convertUPCEtoUPCA(rawText);
} else {
normalizedProductID = rawText;
}
return new ProductParsedResult(rawText, normalizedProductID);
}
}