spectre.console/src/Spectre.Console/Rendering/Borders/Tables/Ascii2TableBorder.cs

using System;

namespace Spectre.Console.Rendering
{
    /// <summary>
    /// Represents another old school ASCII border.
    /// </summary>
    public sealed class Ascii2TableBorder : TableBorder
    {
        /// <inheritdoc/>
        public override string GetPart(TableBorderPart part)
        {
            return part switch
            {
                TableBorderPart.HeaderTopLeft => "+",
                TableBorderPart.HeaderTop => "-",
                TableBorderPart.HeaderTopSeparator => "+",
                TableBorderPart.HeaderTopRight => "+",
                TableBorderPart.HeaderLeft => "|",
                TableBorderPart.HeaderSeparator => "|",
                TableBorderPart.HeaderRight => "|",
                TableBorderPart.HeaderBottomLeft => "|",
                TableBorderPart.HeaderBottom => "-",
                TableBorderPart.HeaderBottomSeparator => "+",
                TableBorderPart.HeaderBottomRight => "|",
                TableBorderPart.CellLeft => "|",
                TableBorderPart.CellSeparator => "|",
                TableBorderPart.CellRight => "|",
                TableBorderPart.FooterBottomLeft => "+",
                TableBorderPart.FooterBottom => "-",
                TableBorderPart.FooterBottomSeparator => "+",
                TableBorderPart.FooterBottomRight => "+",
                _ => throw new InvalidOperationException("Unknown border part."),
            };
        }
    }
}