/*
* 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;
//import com.google.zxing.oned.UPCEReader;
/**
* Parses strings of digits that represent a UPC code.
*
* @author dswitkin@google.com (Daniel Switkin)
*/
final class ProductResultParser extends ResultParser {
private ProductResultParser() {
}
// Treat all UPC and EAN variants as UPCs, in the sense that they are all product barcodes.
public static ProductParsedResult parse(Result result) {
BarcodeFormat format = result.getBarcodeFormat();
if (!(BarcodeFormat.UPC_A.equals(format) || BarcodeFormat.UPC_E.equals(format) ||
BarcodeFormat.EAN_8.equals(format) || BarcodeFormat.EAN_13.equals(format))) {
return null;
}
// Really neither of these should happen:
String rawText = result.getText();
if (rawText == null) {
return null;
}
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 (BarcodeFormat.UPC_E.equals(format)) {
normalizedProductID = UPCEReader.convertUPCEtoUPCA(rawText);
} else {
normalizedProductID = rawText;
}
return new ProductParsedResult(rawText, normalizedProductID);
}
}