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// Copyright 2009-2022 Josh Close
// This file is a part of CsvHelper and is dual licensed under MS-PL and Apache 2.0.
// See LICENSE.txt for details or visit http://www.opensource.org/licenses/ms-pl.html for MS-PL and http://opensource.org/licenses/Apache-2.0 for Apache 2.0.
// https://github.com/JoshClose/CsvHelper
using CsvHelper.Configuration;
namespace CsvHelper.TypeConversion
{
/// <summary>
/// Converts a <see cref="string"/> to and from a <see cref="string"/>.
/// </summary>
public class StringConverter : DefaultTypeConverter
{
/// <summary>
/// Converts the string to an object.
/// </summary>
/// <param name="text">The string to convert to an object.</param>
/// <param name="row">The <see cref="IReaderRow"/> for the current record.</param>
/// <param name="memberMapData">The <see cref="MemberMapData"/> for the member being created.</param>
/// <returns>The object created from the string.</returns>
public override object? ConvertFromString(string? text, IReaderRow row, MemberMapData memberMapData)
{
if (text == null)
{
return string.Empty;
}
foreach (var nullValue in memberMapData.TypeConverterOptions.NullValues)
{
if (text == nullValue)
{
return null;
}
}
return text;
}
}
}
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