/*
* 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 dswitkin@google.com (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);
int length = rawText.length();
for (int x = 0; x < length; x++) {
char c = rawText.charAt(x);
if (c < '0' || c > '9') {
return null;
}
}
// Not actually checking the checksum again here
String normalizedProductID;
// Expand UPC-E for purposes of searching
if (format == BarcodeFormat.UPC_E) {
normalizedProductID = UPCEReader.convertUPCEtoUPCA(rawText);
} else {
normalizedProductID = rawText;
}
return new ProductParsedResult(rawText, normalizedProductID);
}
}