// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System.Globalization;

namespace NuGet.ProjectModel
{
    internal static class StringExtensions
    {
        internal static (string firstPart, string? secondPart) SplitInTwo(this string s, char separator)
        {
            if (string.IsNullOrEmpty(s))
            {
                return (s, null);
            }
            var index = CultureInfo.CurrentCulture.CompareInfo.IndexOf(s, separator, CompareOptions.Ordinal);

            if (index == -1)
            {
                return (s, null);
            }

            return (s.Substring(0, index),
                index >= s.Length - 1 ?
                    null :
                    s.Substring(index + 1));
        }
    }
}