code.gitea.io/gitea@v1.22.3/modules/markup/html_node.go (about)

     1  // Copyright 2024 The Gitea Authors. All rights reserved.
     2  // SPDX-License-Identifier: MIT
     3  
     4  package markup
     5  
     6  import (
     7  	"code.gitea.io/gitea/modules/util"
     8  
     9  	"golang.org/x/net/html"
    10  )
    11  
    12  func visitNodeImg(ctx *RenderContext, img *html.Node) (next *html.Node) {
    13  	next = img.NextSibling
    14  	for i, attr := range img.Attr {
    15  		if attr.Key != "src" {
    16  			continue
    17  		}
    18  
    19  		if IsNonEmptyRelativePath(attr.Val) {
    20  			attr.Val = util.URLJoin(ctx.Links.ResolveMediaLink(ctx.IsWiki), attr.Val)
    21  
    22  			// By default, the "<img>" tag should also be clickable,
    23  			// because frontend use `<img>` to paste the re-scaled image into the markdown,
    24  			// so it must match the default markdown image behavior.
    25  			hasParentAnchor := false
    26  			for p := img.Parent; p != nil; p = p.Parent {
    27  				if hasParentAnchor = p.Type == html.ElementNode && p.Data == "a"; hasParentAnchor {
    28  					break
    29  				}
    30  			}
    31  			if !hasParentAnchor {
    32  				imgA := &html.Node{Type: html.ElementNode, Data: "a", Attr: []html.Attribute{
    33  					{Key: "href", Val: attr.Val},
    34  					{Key: "target", Val: "_blank"},
    35  				}}
    36  				parent := img.Parent
    37  				imgNext := img.NextSibling
    38  				parent.RemoveChild(img)
    39  				parent.InsertBefore(imgA, imgNext)
    40  				imgA.AppendChild(img)
    41  			}
    42  		}
    43  		attr.Val = camoHandleLink(attr.Val)
    44  		img.Attr[i] = attr
    45  	}
    46  	return next
    47  }
    48  
    49  func visitNodeVideo(ctx *RenderContext, node *html.Node) (next *html.Node) {
    50  	next = node.NextSibling
    51  	for i, attr := range node.Attr {
    52  		if attr.Key != "src" {
    53  			continue
    54  		}
    55  		if IsNonEmptyRelativePath(attr.Val) {
    56  			attr.Val = util.URLJoin(ctx.Links.ResolveMediaLink(ctx.IsWiki), attr.Val)
    57  		}
    58  		attr.Val = camoHandleLink(attr.Val)
    59  		node.Attr[i] = attr
    60  	}
    61  	return next
    62  }