// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System;

namespace Microsoft.Extensions.FileSystemGlobbing.Util
{
    internal static class StringComparisonHelper
    {
        public static StringComparer GetStringComparer(StringComparison comparisonType) => comparisonType switch
        {
            StringComparison.CurrentCulture => StringComparer.CurrentCulture,
            StringComparison.CurrentCultureIgnoreCase => StringComparer.CurrentCultureIgnoreCase,
            StringComparison.Ordinal => StringComparer.Ordinal,
            StringComparison.OrdinalIgnoreCase => StringComparer.OrdinalIgnoreCase,
            StringComparison.InvariantCulture => StringComparer.InvariantCulture,
            StringComparison.InvariantCultureIgnoreCase => StringComparer.InvariantCultureIgnoreCase,
            _ => throw new InvalidOperationException(SR.Format(SR.UnexpectedStringComparisonType, comparisonType))
        };
    }
}