DocSpace-client/web/ASC.Web.Core/Helpers/GrammaticalHelper.cs

// (c) Copyright Ascensio System SIA 2010-2022
//
// This program is a free software product.
// You can redistribute it and/or modify it under the terms
// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
// Foundation. In accordance with Section 7(a) of the GNU AGPL its Section 15 shall be amended
// to the effect that Ascensio System SIA expressly excludes the warranty of non-infringement of
// any third-party rights.
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// This program is distributed WITHOUT ANY WARRANTY, without even the implied warranty
// of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE. For details, see
// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
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// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
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// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode

namespace ASC.Web.Core.Helpers;

public static class GrammaticalHelper
{
    public static string ChooseNumeralCase(int number, string nominative, string genitiveSingular, string genitivePlural)
    {
        if (
            Thread.CurrentThread.CurrentUICulture.ThreeLetterISOLanguageName.Equals("rus", StringComparison.InvariantCultureIgnoreCase))
        {
            int[] formsTable = { 2, 0, 1, 1, 1, 2, 2, 2, 2, 2 };

            number = Math.Abs(number);
            var res = formsTable[(((number % 100 / 10) != 1) ? 1 : 0) * (number % 10)];
            return res switch
            {
                0 => nominative,
                1 => genitiveSingular,
                _ => genitivePlural,
            };
        }
        else
        {
            return number == 1 ? nominative : genitivePlural;
        }
    }
}