OpenMarkdown

A lightweight, extensible Markdown parser for .NET, built with a clean, modular architecture. It provides a simple way to convert Markdown source into HTML, supporting multiple dialects.

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Key Features

• Extensible Architecture: Easily add new Markdown dialects by inheriting from the BaseMarkdown class.
• CommonMark Support: The default CommonMarkdown renderer handles standard Markdown syntax.
• GitHub Flavored Markdown (GFM): A dedicated GitHubFlavoredMarkdown renderer adds GFM features like tables, task lists, and strikethrough.
• Simple API: A static OpenMarkDown utility class provides a clean, user-friendly interface for rendering.

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Usage

1. Basic Usage (using the default renderer)

The library is pre-configured to use the CommonMarkdown renderer by default.

using OpenMarkdown;

string markdown = "# Hello, Markdown!\nThis is a **bold** paragraph.";
string html = OpenMarkDown.Render(markdown);
Console.WriteLine(html);
// Output: <h1>Hello, Markdown!</h1><p>This is a <strong>bold</strong> paragraph.</p>

2. Using a Specific Renderer

You can specify a different renderer for a one-off conversion using the generic Render<T> method.

using OpenMarkdown;
using OpenMarkdown.Dialects;

string gfmMarkdown = "- [x] Task list item\n\n~~Strikethrough~~";
string html = OpenMarkDown.Render<GitHubFlavoredMarkdown>(gfmMarkdown);
Console.WriteLine(html);
// Output: <ul><li class="task-list-item"><input type="checkbox" disabled checked /> Task list item</li></ul><p><del>Strikethrough</del></p>

3. Setting a Default Renderer

To change the default renderer for all subsequent OpenMarkDown.Render() calls, use the UseRenderer method.

using OpenMarkdown;
using OpenMarkdown.Dialects;

// Set GFM as the new default renderer
OpenMarkDown.UseRenderer<GitHubFlavoredMarkdown>();

string markdown = "A raw link: https://example.com";
string html = OpenMarkDown.Render(markdown); // Uses the new GFM default
Console.WriteLine(html);
// Output: <p>A raw link: <a href="https://example.com">https://example.com</a></p>

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Project Structure

The project is designed to be modular and easy to navigate.

• BaseMarkdown.cs: The abstract base class that defines the core rendering contract.
• OpenMarkDown.cs: The static entry point for the library.
• Dialects/: A folder containing specific Markdown dialect implementations.
  • CommonMarkdown.cs: The standard CommonMark renderer.
  • GitHubFlavoredMarkdown.cs: Extends CommonMarkdown to add GFM features.