84 lines
2.7 KiB
C#
84 lines
2.7 KiB
C#
using System;
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using System.IO;
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using Markdig;
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using Markdig.Parsers;
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using Markdig.Syntax;
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using MfGames.Markdown.Gemtext.Renderers;
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namespace MfGames.Markdown.Gemtext
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{
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/// <summary>
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/// The static class that corresponds to Markdig.Markdown. This is written
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/// with the same pattern, but since `Markdown` is a static, we can't tack
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/// onto that.
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/// </summary>
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public static class MarkdownGemtext
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{
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private static readonly MarkdownPipeline DefaultPipeline;
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static MarkdownGemtext()
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{
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DefaultPipeline = new MarkdownPipelineBuilder()
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.Build();
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}
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/// <summary>
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/// Converts the given Markdown
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/// </summary>
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/// <param name="markdown">A Markdown text.</param>
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/// <param name="pipeline">The pipeline used for the conversion.</param>
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/// <param name="context">A parser context used for the parsing.</param>
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/// <returns>The result of the conversion</returns>
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public static string ToGemtext(
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string markdown,
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MarkdownPipeline? pipeline = null,
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MarkdownParserContext? context = null)
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{
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if (markdown == null)
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{
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throw new ArgumentNullException(nameof(markdown));
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}
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pipeline ??= DefaultPipeline;
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MarkdownDocument document = MarkdownParser
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.Parse(markdown, pipeline, context);
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return ToGemtext(document, pipeline);
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}
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/// <summary>
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/// Converts a Markdown document to HTML.
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/// </summary>
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/// <param name="document">A Markdown document.</param>
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/// <param name="pipeline">The pipeline used for the conversion.</param>
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/// <returns>The result of the conversion</returns>
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/// <exception cref="ArgumentNullException">if markdown document variable is null</exception>
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public static string ToGemtext(
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this MarkdownDocument document,
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MarkdownPipeline? pipeline = null)
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{
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// Make sure we have sane parameters.
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if (document == null)
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{
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throw new ArgumentNullException(nameof(document));
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}
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pipeline ??= DefaultPipeline;
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// Set up the writer to contain the markdown and the Gemtext
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// renderer.
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var writer = new StringWriter();
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GemtextRenderer renderer = new(writer);
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pipeline.Setup(renderer);
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// Render the Markdown into Gemtext and re turn the results.
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renderer.Render(document);
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renderer.Writer.Flush();
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return renderer.Writer.ToString() ?? string.Empty;
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}
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}
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}
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