MarkdownRenderer.cs

using Markdig;
using ShellDocs.Core;

namespace ShellDocs.Markdown;

public class MarkdownRenderer
{
 private readonly TypeRegistry _registry;
 private readonly MarkdownPipeline _pipeline;

 public MarkdownRenderer() : this(new TypeRegistry(), MarkdownPipelineFactory.Create()) { }
 public MarkdownRenderer(TypeRegistry registry) : this(registry, MarkdownPipelineFactory.Create()) { }
 public MarkdownRenderer(TypeRegistry registry, MarkdownPipeline pipeline)
 {
 _registry = registry;
 _pipeline = pipeline;
 }

 public IReadOnlyList<string> LastWarnings { get; private set; } = Array.Empty<string>();

 public RenderedDocument Render(string markdown)
 {
 var parsed = FrontmatterParser.Parse(markdown ?? "");

 var extractor = new SlotExtractor(_registry);
 var (processed, slots, warnings) = extractor.Process(parsed.Body);
 LastWarnings = warnings;

 var doc = Markdig.Markdown.Parse(processed, _pipeline);
 var headings = HeadingExtractor.Extract(doc);
 var html = CodeBlockEnhancer.Enhance(doc.ToHtml(_pipeline));

 return new RenderedDocument(html, slots, parsed, headings);
 }

 public RenderedDocument RenderFile(string path) => Render(File.ReadAllText(path));
}