zxing/csharp/client/result/ProductResultParser.cs
2013-01-18 20:14:03 +00:00

67 lines
1.9 KiB
C#
Executable file

/*
* 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.
*/
namespace com.google.zxing.client.result
{
using BarcodeFormat = com.google.zxing.BarcodeFormat;
using Result = com.google.zxing.Result;
using UPCEReader = com.google.zxing.oned.UPCEReader;
/// <summary>
/// Parses strings of digits that represent a UPC code.
///
/// @author dswitkin@google.com (Daniel Switkin)
/// </summary>
public sealed class ProductResultParser : ResultParser
{
// Treat all UPC and EAN variants as UPCs, in the sense that they are all product barcodes.
public override ParsedResult parse(Result result)
{
BarcodeFormat format = result.BarcodeFormat;
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[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);
}
}
}