gitea/modules/markup/markdown/transform_link.go

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// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package markdown
import (
"path/filepath"
"code.gitea.io/gitea/modules/markup"
giteautil "code.gitea.io/gitea/modules/util"
"github.com/yuin/goldmark/ast"
"github.com/yuin/goldmark/text"
)
func (g *ASTTransformer) transformLink(ctx *markup.RenderContext, v *ast.Link, reader text.Reader) {
// Links need their href to munged to be a real value
link := v.Destination
isAnchorFragment := len(link) > 0 && link[0] == '#'
if !isAnchorFragment && !markup.IsFullURLBytes(link) {
base := ctx.Links.Base
if ctx.IsWiki {
if filepath.Ext(string(link)) == "" {
// This link doesn't have a file extension - assume a regular wiki link
base = ctx.Links.WikiLink()
} else if markup.Type(string(link)) != "" {
// If it's a file type we can render, use a regular wiki link
base = ctx.Links.WikiLink()
} else {
// Otherwise, use a raw link instead
base = ctx.Links.WikiRawLink()
}
} else if ctx.Links.HasBranchInfo() {
base = ctx.Links.SrcLink()
}
link = []byte(giteautil.URLJoin(base, string(link)))
}
if isAnchorFragment {
link = []byte("#user-content-" + string(link)[1:])
}
v.Destination = link
}