57 lines
1.8 KiB
C#
57 lines
1.8 KiB
C#
using Markdig.Syntax;
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namespace MfGames.Markdown.Gemtext.Renderers.Gemtext.Blocks
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{
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/// <summary>
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/// An Gemtext renderer for a <see cref="HeadingBlock" />.
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/// </summary>
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/// <seealso cref="GemtextObjectRenderer{HeadingBlock}" />
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public class HeadingRenderer : GemtextObjectRenderer<HeadingBlock>
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{
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private int currentHeading;
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/// <summary>
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/// Gets or sets a value indicating whether the header depths are
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/// increased after the first one.
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/// </summary>
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public bool IncreaseHeaderDepthAfterFirst { get; set; }
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protected override void Write(
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GemtextRenderer renderer,
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HeadingBlock obj)
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{
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// Figure out the level we should be processing.
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int level = obj.Level;
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if (this.currentHeading++ > 0 && this.IncreaseHeaderDepthAfterFirst)
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{
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// Check the second header we see. If this header is H2 or
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// higher, then we assume that the file has been already updated
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// to handle the heading and we stop processing.
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if (this.currentHeading == 2 && level != 1)
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{
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this.IncreaseHeaderDepthAfterFirst = false;
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}
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else
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{
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// We are bumping the heading levels up.
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level++;
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}
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}
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// Write out the prefix of the header.
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string prefix = level switch
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{
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1 => "# ",
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2 => "## ",
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3 => "### ",
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_ => "",
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};
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renderer.EnsureTwoLines();
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renderer.Write(prefix);
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renderer.WriteLeafInline(obj);
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}
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}
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}
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