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// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package markdown
import (
"strings"
"code.gitea.io/gitea/modules/markup"
giteautil "code.gitea.io/gitea/modules/util"
"github.com/yuin/goldmark/ast"
)
func (g *ASTTransformer) transformImage(ctx *markup.RenderContext, v *ast.Image) {
// Images need two things:
//
// 1. Their src needs to munged to be a real value
// 2. If they're not wrapped with a link they need a link wrapper
// Check if the destination is a real link
if len(v.Destination) > 0 && !markup.IsLink(v.Destination) {
v.Destination = []byte(giteautil.URLJoin(
ctx.Links.ResolveMediaLink(ctx.IsWiki),
strings.TrimLeft(string(v.Destination), "/"),
))
}
parent := v.Parent()
// Create a link around image only if parent is not already a link
if _, ok := parent.(*ast.Link); !ok && parent != nil {
next := v.NextSibling()
// Create a link wrapper
wrap := ast.NewLink()
wrap.Destination = v.Destination
wrap.Title = v.Title
wrap.SetAttributeString("target", []byte("_blank"))
// Duplicate the current image node
image := ast.NewImage(ast.NewLink())
image.Destination = v.Destination
image.Title = v.Title
for _, attr := range v.Attributes() {
image.SetAttribute(attr.Name, attr.Value)
}
for child := v.FirstChild(); child != nil; {
next := child.NextSibling()
image.AppendChild(image, child)
child = next
}
// Append our duplicate image to the wrapper link
wrap.AppendChild(wrap, image)
// Wire in the next sibling
wrap.SetNextSibling(next)
// Replace the current node with the wrapper link
parent.ReplaceChild(parent, v, wrap)
// But most importantly ensure the next sibling is still on the old image too
v.SetNextSibling(next)
}
}
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