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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;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
namespace CsvHelper.TypeConversion
{
/// <summary>
/// Options used when doing type conversion.
/// </summary>
public class TypeConverterOptions
{
private static readonly string[] defaultBooleanTrueValues = { };
private static readonly string[] defaultBooleanFalseValues = { };
private static readonly string[] defaultNullValues = { };
/// <summary>
/// Gets or sets the culture info.
/// </summary>
public CultureInfo CultureInfo { get; set; }
/// <summary>
/// Gets or sets the date time style.
/// </summary>
public DateTimeStyles? DateTimeStyle { get; set; }
/// <summary>
/// Gets or sets the time span style.
/// </summary>
public TimeSpanStyles? TimeSpanStyle { get; set; }
/// <summary>
/// Gets or sets the number style.
/// </summary>
public NumberStyles? NumberStyles { get; set; }
/// <summary>
/// Gets or sets the string format.
/// </summary>
public string[] Formats { get; set; }
/// <summary>
/// Gets or sets the <see cref="UriKind"/>.
/// </summary>
public UriKind? UriKind { get; set; }
/// <summary>
/// Ingore case when parsing enums. Default is false.
/// </summary>
public bool? EnumIgnoreCase { get; set; }
/// <summary>
/// Gets the list of values that can be
/// used to represent a boolean of true.
/// </summary>
public List<string> BooleanTrueValues { get; } = new List<string>(defaultBooleanTrueValues);
/// <summary>
/// Gets the list of values that can be
/// used to represent a boolean of false.
/// </summary>
public List<string> BooleanFalseValues { get; } = new List<string>(defaultBooleanFalseValues);
/// <summary>
/// Gets the list of values that can be used to represent a null value.
/// </summary>
public List<string> NullValues { get; } = new List<string>(defaultNullValues);
/// <summary>
/// Merges TypeConverterOptions by applying the values of sources in order on to each other.
/// The first object is the source object.
/// </summary>
/// <param name="sources">The sources that will be applied.</param>
/// <returns>The updated source object.</returns>
public static TypeConverterOptions? Merge(params TypeConverterOptions[] sources)
{
if (sources == null || sources.Length == 0)
{
return null;
}
var options = sources[0];
for (var i = 1; i < sources.Length; i++)
{
var source = sources[i];
if (source == null)
{
continue;
}
if (source.CultureInfo != null)
{
options.CultureInfo = source.CultureInfo;
}
if (source.DateTimeStyle != null)
{
options.DateTimeStyle = source.DateTimeStyle;
}
if (source.TimeSpanStyle != null)
{
options.TimeSpanStyle = source.TimeSpanStyle;
}
if (source.NumberStyles != null)
{
options.NumberStyles = source.NumberStyles;
}
if (source.Formats != null)
{
options.Formats = source.Formats;
}
if (source.UriKind != null)
{
options.UriKind = source.UriKind;
}
if (source.EnumIgnoreCase != null)
{
options.EnumIgnoreCase = source.EnumIgnoreCase;
}
// Only change the values if they are different than the defaults.
// This means there were explicit changes made to the options.
if (!defaultBooleanTrueValues.SequenceEqual(source.BooleanTrueValues))
{
options.BooleanTrueValues.Clear();
options.BooleanTrueValues.AddRange(source.BooleanTrueValues);
}
if (!defaultBooleanFalseValues.SequenceEqual(source.BooleanFalseValues))
{
options.BooleanFalseValues.Clear();
options.BooleanFalseValues.AddRange(source.BooleanFalseValues);
}
if (!defaultNullValues.SequenceEqual(source.NullValues))
{
options.NullValues.Clear();
options.NullValues.AddRange(source.NullValues);
}
}
return options;
}
}
}
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