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