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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 System.Collections;
using System.Collections.Generic;
using CsvHelper.Configuration;
namespace CsvHelper.TypeConversion
{
/// <summary>
/// Converts an <see cref="IDictionary{TKey, TValue}"/> to and from a <see cref="string"/>.
/// </summary>
public class IDictionaryGenericConverter : IDictionaryConverter
{
/// <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)
{
var keyType = memberMapData.Member.MemberType().GetGenericArguments()[0];
var valueType = memberMapData.Member.MemberType().GetGenericArguments()[1];
var dictionaryType = typeof(Dictionary<,>);
dictionaryType = dictionaryType.MakeGenericType(keyType, valueType);
var dictionary = (IDictionary)ObjectResolver.Current.Resolve(dictionaryType);
var converter = row.Context.TypeConverterCache.GetConverter(valueType);
var indexEnd = memberMapData.IndexEnd < memberMapData.Index
? row.Parser.Count - 1
: memberMapData.IndexEnd;
for (var i = memberMapData.Index; i <= indexEnd; i++)
{
var field = converter.ConvertFromString(row.GetField(i), row, memberMapData);
dictionary.Add(row.HeaderRecord[i], field);
}
return dictionary;
}
}
}
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