go.mod

module github.com/jvns/markdown-compare

go 1.23.1

require (
	github.com/russross/blackfriday v1.6.0 // indirect
	github.com/yuin/goldmark v1.7.4 // indirect
)

main.go

package main

import (
	"bytes"
	"fmt"
	"io/ioutil"
	"os"

	"github.com/russross/blackfriday"
	"github.com/yuin/goldmark"
	"github.com/yuin/goldmark/extension"
	"github.com/yuin/goldmark/parser"
	"github.com/yuin/goldmark/renderer/html"
)

func main() {
	// Read input from stdin
	input, err := ioutil.ReadAll(os.Stdin)
	if err != nil {
		fmt.Println("Error reading input:", err)
		return
	}

	// Convert markdown to HTML using blackfriday
	blackfridayOutput := blackfriday.MarkdownBasic(input)

	// Convert markdown to HTML using goldmark
	var goldmarkOutput bytes.Buffer
	// allow html unsafe
	// do typography
	md := goldmark.New(
		goldmark.WithExtensions(extension.GFM),
		goldmark.WithParserOptions(
			parser.WithAutoHeadingID(),
		),
		goldmark.WithRendererOptions(
			html.WithUnsafe(),
		),
	)
	if err := md.Convert(input, &goldmarkOutput); err != nil {
		fmt.Println("Error converting markdown using goldmark:", err)
		return
	}

	// Print out both results
	fmt.Println("Blackfriday HTML Output:")
	fmt.Println(string(blackfridayOutput))
	fmt.Println("Goldmark HTML Output:")
	fmt.Println(goldmarkOutput.String())
}