package markdown import ( "bytes" "github.com/avelino/awesome-go/pkg/slug" "github.com/yuin/goldmark" "github.com/yuin/goldmark/ast" "github.com/yuin/goldmark/extension" "github.com/yuin/goldmark/parser" "github.com/yuin/goldmark/renderer/html" "github.com/yuin/goldmark/util" ) // ConvertMarkdownToHTML converts markdown byte slice to a HTML byte slice func ConvertMarkdownToHTML(markdown []byte) ([]byte, error) { md := goldmark.New( goldmark.WithExtensions(extension.GFM), goldmark.WithParserOptions( parser.WithAutoHeadingID(), // generate heading IDs for content navigation ), goldmark.WithRendererOptions( html.WithXHTML(), html.WithUnsafe(), // allow inline HTML ), ) ctx := parser.NewContext( parser.WithIDs(&IDGenerator{}), // register custom ID generator ) var buf bytes.Buffer if err := md.Convert(markdown, &buf, parser.WithContext(ctx)); err != nil { return nil, err } return buf.Bytes(), nil } // IDGenerator for goldmark to provide IDs more similar to GitHub's IDs on markdown parsing type IDGenerator struct { used map[string]bool } // Generate an ID func (g *IDGenerator) Generate(value []byte, _ ast.NodeKind) []byte { return []byte(slug.Generate(string(value))) } // Put an ID to the list of already used IDs func (g *IDGenerator) Put(value []byte) { g.used[util.BytesToReadOnlyString(value)] = true }