mark/renderer/link.go
2024-10-21 14:39:40 +02:00

93 lines
2.6 KiB
Go

package renderer
import (
"github.com/yuin/goldmark/ast"
"github.com/yuin/goldmark/renderer"
"github.com/yuin/goldmark/renderer/html"
"github.com/yuin/goldmark/util"
)
type ConfluenceLinkRenderer struct {
html.Config
}
// NewConfluenceRenderer creates a new instance of the ConfluenceRenderer
func NewConfluenceLinkRenderer(opts ...html.Option) renderer.NodeRenderer {
return &ConfluenceLinkRenderer{
Config: html.NewConfig(),
}
}
// RegisterFuncs implements NodeRenderer.RegisterFuncs .
func (r *ConfluenceLinkRenderer) RegisterFuncs(reg renderer.NodeRendererFuncRegisterer) {
reg.Register(ast.KindLink, r.renderLink)
}
// renderLink renders links specifically for confluence
func (r *ConfluenceLinkRenderer) renderLink(writer util.BufWriter, source []byte, node ast.Node, entering bool) (ast.WalkStatus, error) {
n := node.(*ast.Link)
if string(n.Destination[0:3]) == "ac:" {
if entering {
_, err := writer.Write([]byte("<ac:link><ri:page ri:content-title=\""))
if err != nil {
return ast.WalkStop, err
}
if len(string(n.Destination)) < 4 {
//nolint:staticcheck
_, err := writer.Write(node.Text(source))
if err != nil {
return ast.WalkStop, err
}
} else {
_, err := writer.Write(n.Destination[3:])
if err != nil {
return ast.WalkStop, err
}
}
_, err = writer.Write([]byte("\"/><ac:plain-text-link-body><![CDATA["))
if err != nil {
return ast.WalkStop, err
}
//nolint:staticcheck
_, err = writer.Write(node.Text(source))
if err != nil {
return ast.WalkStop, err
}
_, err = writer.Write([]byte("]]></ac:plain-text-link-body></ac:link>"))
if err != nil {
return ast.WalkStop, err
}
}
return ast.WalkSkipChildren, nil
}
return r.goldmarkRenderLink(writer, source, node, entering)
}
// goldmarkRenderLink is the default renderLink implementation from https://github.com/yuin/goldmark/blob/9d6f314b99ca23037c93d76f248be7b37de6220a/renderer/html/html.go#L552
func (r *ConfluenceLinkRenderer) goldmarkRenderLink(w util.BufWriter, source []byte, node ast.Node, entering bool) (ast.WalkStatus, error) {
n := node.(*ast.Link)
if entering {
_, _ = w.WriteString("<a href=\"")
if r.Unsafe || !html.IsDangerousURL(n.Destination) {
_, _ = w.Write(util.EscapeHTML(util.URLEscape(n.Destination, true)))
}
_ = w.WriteByte('"')
if n.Title != nil {
_, _ = w.WriteString(` title="`)
r.Writer.Write(w, n.Title)
_ = w.WriteByte('"')
}
if n.Attributes() != nil {
html.RenderAttributes(w, n, html.LinkAttributeFilter)
}
_ = w.WriteByte('>')
} else {
_, _ = w.WriteString("</a>")
}
return ast.WalkContinue, nil
}