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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package godoc
import (
"bytes"
"github.com/yuin/goldmark"
"github.com/yuin/goldmark/parser"
"github.com/yuin/goldmark/renderer/html"
)
// renderMarkdown converts a limited and opinionated flavor of Markdown (compliant with
// CommonMark 0.29) to HTML for the purposes of Go websites.
//
// The Markdown source may contain raw HTML,
// but Go templates have already been processed.
func renderMarkdown(src []byte) ([]byte, error) {
// parser.WithHeadingAttribute allows custom ids on headings.
// html.WithUnsafe allows use of raw HTML, which we need for tables.
md := goldmark.New(
goldmark.WithParserOptions(parser.WithHeadingAttribute()),
goldmark.WithRendererOptions(html.WithUnsafe()))
var buf bytes.Buffer
if err := md.Convert(src, &buf); err != nil {
return nil, err
}
return buf.Bytes(), nil
}
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