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Make pasted "img" tag has the same behavior as markdown image (#31235)

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Fix #31230

---------

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
This commit is contained in:
wxiaoguang 2024-06-04 20:19:41 +08:00 committed by GitHub
parent 4ca65fabda
commit 9000811118
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GPG Key ID: B5690EEEBB952194
5 changed files with 79 additions and 59 deletions
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60
modules/markup/html.go
View File

@ -372,7 +372,42 @@ func postProcess(ctx *RenderContext, procs []processor, input io.Reader, output
return nil
}
func visitNode(ctx *RenderContext, procs []processor, node *html.Node) {
func handleNodeImg(ctx *RenderContext, img *html.Node) {
for i, attr := range img.Attr {
if attr.Key != "src" {
continue
}
if attr.Val != "" && !IsFullURLString(attr.Val) && !strings.HasPrefix(attr.Val, "/") {
attr.Val = util.URLJoin(ctx.Links.ResolveMediaLink(ctx.IsWiki), attr.Val)
// By default, the "<img>" tag should also be clickable,
// because frontend use `<img>` to paste the re-scaled image into the markdown,
// so it must match the default markdown image behavior.
hasParentAnchor := false
for p := img.Parent; p != nil; p = p.Parent {
if hasParentAnchor = p.Type == html.ElementNode && p.Data == "a"; hasParentAnchor {
break
}
}
if !hasParentAnchor {
imgA := &html.Node{Type: html.ElementNode, Data: "a", Attr: []html.Attribute{
{Key: "href", Val: attr.Val},
{Key: "target", Val: "_blank"},
}}
parent := img.Parent
imgNext := img.NextSibling
parent.RemoveChild(img)
parent.InsertBefore(imgA, imgNext)
imgA.AppendChild(img)
}
}
attr.Val = camoHandleLink(attr.Val)
img.Attr[i] = attr
}
}
func visitNode(ctx *RenderContext, procs []processor, node *html.Node) *html.Node {
// Add user-content- to IDs and "#" links if they don't already have them
for idx, attr := range node.Attr {
val := strings.TrimPrefix(attr.Val, "#")
@ -397,21 +432,14 @@ func visitNode(ctx *RenderContext, procs []processor, node *html.Node) {
textNode(ctx, procs, node)
case html.ElementNode:
if node.Data == "img" {
for i, attr := range node.Attr {
if attr.Key != "src" {
continue
}
if len(attr.Val) > 0 && !IsFullURLString(attr.Val) && !strings.HasPrefix(attr.Val, "data:image/") {
attr.Val = util.URLJoin(ctx.Links.ResolveMediaLink(ctx.IsWiki), attr.Val)
}
attr.Val = camoHandleLink(attr.Val)
node.Attr[i] = attr
}
next := node.NextSibling
handleNodeImg(ctx, node)
return next
} else if node.Data == "a" {
// Restrict text in links to emojis
procs = emojiProcessors
} else if node.Data == "code" || node.Data == "pre" {
return
return node.NextSibling
} else if node.Data == "i" {
for _, attr := range node.Attr {
if attr.Key != "class" {
@ -434,11 +462,11 @@ func visitNode(ctx *RenderContext, procs []processor, node *html.Node) {
}
}
}
for n := node.FirstChild; n != nil; n = n.NextSibling {
visitNode(ctx, procs, n)
for n := node.FirstChild; n != nil; {
n = visitNode(ctx, procs, n)
}
}
// ignore everything else
return node.NextSibling
}
// textNode runs the passed node through various processors, in order to handle
@ -851,7 +879,7 @@ func issueIndexPatternProcessor(ctx *RenderContext, node *html.Node) {
// FIXME: the use of "mode" is quite dirty and hacky, for example: what is a "document"? how should it be rendered?
// The "mode" approach should be refactored to some other more clear&reliable way.
crossLinkOnly := (ctx.Metas["mode"] == "document" && !ctx.IsWiki)
crossLinkOnly := ctx.Metas["mode"] == "document" && !ctx.IsWiki
var (
found bool

19
modules/markup/html_internal_test.go
View File

@ -18,8 +18,7 @@ import (
const (
TestAppURL = "http://localhost:3000/"
TestOrgRepo = "gogits/gogs"
TestRepoURL = TestAppURL + TestOrgRepo + "/"
TestRepoURL = TestAppURL + "test-owner/test-repo/"
)
// externalIssueLink an HTML link to an alphanumeric-style issue
@ -64,8 +63,8 @@ var regexpMetas = map[string]string{
// these values should match the TestOrgRepo const above
var localMetas = map[string]string{
"user": "gogits",
"repo": "gogs",
"user": "test-owner",
"repo": "test-repo",
}
func TestRender_IssueIndexPattern(t *testing.T) {
@ -362,12 +361,12 @@ func TestRender_FullIssueURLs(t *testing.T) {
`Look here <a href="http://localhost:3000/person/repo/issues/4" class="ref-issue">person/repo#4</a>`)
test("http://localhost:3000/person/repo/issues/4#issuecomment-1234",
`<a href="http://localhost:3000/person/repo/issues/4#issuecomment-1234" class="ref-issue">person/repo#4 (comment)</a>`)
test("http://localhost:3000/gogits/gogs/issues/4",
`<a href="http://localhost:3000/gogits/gogs/issues/4" class="ref-issue">#4</a>`)
test("http://localhost:3000/gogits/gogs/issues/4 test",
`<a href="http://localhost:3000/gogits/gogs/issues/4" class="ref-issue">#4</a> test`)
test("http://localhost:3000/gogits/gogs/issues/4?a=1&b=2#comment-123 test",
`<a href="http://localhost:3000/gogits/gogs/issues/4?a=1&amp;b=2#comment-123" class="ref-issue">#4 (comment)</a> test`)
test("http://localhost:3000/test-owner/test-repo/issues/4",
`<a href="http://localhost:3000/test-owner/test-repo/issues/4" class="ref-issue">#4</a>`)
test("http://localhost:3000/test-owner/test-repo/issues/4 test",
`<a href="http://localhost:3000/test-owner/test-repo/issues/4" class="ref-issue">#4</a> test`)
test("http://localhost:3000/test-owner/test-repo/issues/4?a=1&b=2#comment-123 test",
`<a href="http://localhost:3000/test-owner/test-repo/issues/4?a=1&amp;b=2#comment-123" class="ref-issue">#4 (comment)</a> test`)
test("http://localhost:3000/testOrg/testOrgRepo/pulls/2/files#issuecomment-24",
"http://localhost:3000/testOrg/testOrgRepo/pulls/2/files#issuecomment-24")
test("http://localhost:3000/testOrg/testOrgRepo/pulls/2/files",

51
modules/markup/html_test.go
View File

@ -120,8 +120,8 @@ func TestRender_CrossReferences(t *testing.T) {
}
test(
"gogits/gogs#12345",
`<p><a href="`+util.URLJoin(markup.TestAppURL, "gogits", "gogs", "issues", "12345")+`" class="ref-issue" rel="nofollow">gogits/gogs#12345</a></p>`)
"test-owner/test-repo#12345",
`<p><a href="`+util.URLJoin(markup.TestAppURL, "test-owner", "test-repo", "issues", "12345")+`" class="ref-issue" rel="nofollow">test-owner/test-repo#12345</a></p>`)
test(
"go-gitea/gitea#12345",
`<p><a href="`+util.URLJoin(markup.TestAppURL, "go-gitea", "gitea", "issues", "12345")+`" class="ref-issue" rel="nofollow">go-gitea/gitea#12345</a></p>`)
@ -530,43 +530,31 @@ func TestRender_ShortLinks(t *testing.T) {
}
func TestRender_RelativeImages(t *testing.T) {
setting.AppURL = markup.TestAppURL
test := func(input, expected, expectedWiki string) {
render := func(input string, isWiki bool, links markup.Links) string {
buffer, err := markdown.RenderString(&markup.RenderContext{
Ctx: git.DefaultContext,
Links: markup.Links{
Base: markup.TestRepoURL,
BranchPath: "master",
},
Metas: localMetas,
}, input)
assert.NoError(t, err)
assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(string(buffer)))
buffer, err = markdown.RenderString(&markup.RenderContext{
Ctx: git.DefaultContext,
Links: markup.Links{
Base: markup.TestRepoURL,
},
Ctx: git.DefaultContext,
Links: links,
Metas: localMetas,
IsWiki: true,
IsWiki: isWiki,
}, input)
assert.NoError(t, err)
assert.Equal(t, strings.TrimSpace(expectedWiki), strings.TrimSpace(string(buffer)))
return strings.TrimSpace(string(buffer))
}
rawwiki := util.URLJoin(markup.TestRepoURL, "wiki", "raw")
mediatree := util.URLJoin(markup.TestRepoURL, "media", "master")
out := render(`<img src="LINK">`, false, markup.Links{Base: "/test-owner/test-repo"})
assert.Equal(t, `<a href="/test-owner/test-repo/LINK" target="_blank" rel="nofollow noopener"><img src="/test-owner/test-repo/LINK"/></a>`, out)
test(
`<img src="Link">`,
`<img src="`+util.URLJoin(mediatree, "Link")+`"/>`,
`<img src="`+util.URLJoin(rawwiki, "Link")+`"/>`)
out = render(`<img src="LINK">`, true, markup.Links{Base: "/test-owner/test-repo"})
assert.Equal(t, `<a href="/test-owner/test-repo/wiki/raw/LINK" target="_blank" rel="nofollow noopener"><img src="/test-owner/test-repo/wiki/raw/LINK"/></a>`, out)
test(
`<img src="./icon.png">`,
`<img src="`+util.URLJoin(mediatree, "icon.png")+`"/>`,
`<img src="`+util.URLJoin(rawwiki, "icon.png")+`"/>`)
out = render(`<img src="LINK">`, false, markup.Links{Base: "/test-owner/test-repo", BranchPath: "test-branch"})
assert.Equal(t, `<a href="/test-owner/test-repo/media/test-branch/LINK" target="_blank" rel="nofollow noopener"><img src="/test-owner/test-repo/media/test-branch/LINK"/></a>`, out)
out = render(`<img src="LINK">`, true, markup.Links{Base: "/test-owner/test-repo", BranchPath: "test-branch"})
assert.Equal(t, `<a href="/test-owner/test-repo/wiki/raw/LINK" target="_blank" rel="nofollow noopener"><img src="/test-owner/test-repo/wiki/raw/LINK"/></a>`, out)
out = render(`<img src="/LINK">`, true, markup.Links{Base: "/test-owner/test-repo", BranchPath: "test-branch"})
assert.Equal(t, `<img src="/LINK"/>`, out)
}
func Test_ParseClusterFuzz(t *testing.T) {
@ -719,5 +707,6 @@ func TestIssue18471(t *testing.T) {
func TestIsFullURL(t *testing.T) {
assert.True(t, markup.IsFullURLString("https://example.com"))
assert.True(t, markup.IsFullURLString("mailto:test@example.com"))
assert.True(t, markup.IsFullURLString("data:image/11111"))
assert.False(t, markup.IsFullURLString("/foo:bar"))
}

2
modules/markup/renderer.go
View File

@ -74,7 +74,7 @@ type RenderContext struct {
Type string
IsWiki bool
Links Links
Metas map[string]string
Metas map[string]string // user, repo, mode(comment/document)
DefaultLink string
GitRepo *git.Repository
Repo gitrepo.Repository

6
web_src/js/features/comp/Paste.js
View File

@ -100,13 +100,17 @@ async function handleClipboardImages(editor, dropzone, images, e) {
const {uuid} = await uploadFile(img, uploadUrl);
const {width, dppx} = await imageInfo(img);
const url = `/attachments/${uuid}`;
let text;
if (width > 0 && dppx > 1) {
// Scale down images from HiDPI monitors. This uses the <img> tag because it's the only
// method to change image size in Markdown that is supported by all implementations.
// Make the image link relative to the repo path, then the final URL is "/sub-path/owner/repo/attachments/{uuid}"
const url = `attachments/${uuid}`;
text = `<img width="${Math.round(width / dppx)}" alt="${htmlEscape(name)}" src="${htmlEscape(url)}">`;
} else {
// Markdown always renders the image with a relative path, so the final URL is "/sub-path/owner/repo/attachments/{uuid}"
// TODO: it should also use relative path for consistency, because absolute is ambiguous for "/sub-path/attachments" or "/attachments"
const url = `/attachments/${uuid}`;
text = `![${name}](${url})`;
}
editor.replacePlaceholder(placeholder, text);