zxing/csharp/client/result/ISBNResultParser.cs

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/*
* Copyright 2008 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;
/// <summary>
/// Parses strings of digits that represent a ISBN.
///
/// @author jbreiden@google.com (Jeff Breidenbach)
/// </summary>
public sealed class ISBNResultParser : ResultParser
{
/// <summary>
/// See <a href="http://www.bisg.org/isbn-13/for.dummies.html">ISBN-13 For Dummies</a>
/// </summary>
public override ParsedResult parse(Result result)
{
BarcodeFormat format = result.BarcodeFormat;
if (format != BarcodeFormat.EAN_13)
{
return null;
}
string rawText = getMassagedText(result);
int length = rawText.Length;
if (length != 13)
{
return null;
}
if (!rawText.StartsWith("978") && !rawText.StartsWith("979"))
{
return null;
}
return new ISBNParsedResult(rawText);
}
}
}