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Fix markdown image with link (#4675)

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* Fix markdown image with link

* Add gitea copyright notice

* add a test for markdown image with link

* remove svg related variables
This commit is contained in:
L.E.R 2018-10-30 17:26:28 -05:00 • committed by techknowlogick
parent 10370651fc
commit b686bd0c94
2 changed files with 21 additions and 22 deletions
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39
modules/markup/markdown/markdown.go
View file

@ -1,4 +1,5 @@
// Copyright 2014 The Gogs Authors. All rights reserved.
// Copyright 2018 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
@ -38,7 +39,16 @@ func (r *Renderer) Link(out *bytes.Buffer, link []byte, title []byte, content []
link = []byte(mLink)
}
r.Renderer.Link(out, link, title, content)
if len(content) > 10 && string(content[0:9]) == "<a href=\"" && bytes.Contains(content[9:], []byte("<img")) {
// Image with link case: markdown `[![]()]()`
// If the content is an image, then we change the original href around it
// which points to itself to a new address "link"
rightQuote := bytes.Index(content[9:], []byte("\""))
content = bytes.Replace(content, content[9:9+rightQuote], link, 1)
out.Write(content)
} else {
r.Renderer.Link(out, link, title, content)
}
}
// List renders markdown bullet or digit lists to HTML
@ -90,13 +100,6 @@ func (r *Renderer) ListItem(out *bytes.Buffer, text []byte, flags int) {
r.Renderer.ListItem(out, text, flags)
}
// Note: this section is for purpose of increase performance and
// reduce memory allocation at runtime since they are constant literals.
var (
svgSuffix = []byte(".svg")
svgSuffixWithMark = []byte(".svg?")
)
// Image defines how images should be processed to produce corresponding HTML elements.
func (r *Renderer) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
prefix := r.URLPrefix
@ -104,22 +107,14 @@ func (r *Renderer) Image(out *bytes.Buffer, link []byte, title []byte, alt []byt
prefix = util.URLJoin(prefix, "wiki", "raw")
}
prefix = strings.Replace(prefix, "/src/", "/raw/", 1)
if len(link) > 0 {
if markup.IsLink(link) {
// External link with .svg suffix usually means CI status.
// TODO: define a keyword to allow non-svg images render as external link.
if bytes.HasSuffix(link, svgSuffix) || bytes.Contains(link, svgSuffixWithMark) {
r.Renderer.Image(out, link, title, alt)
return
}
} else {
lnk := string(link)
lnk = util.URLJoin(prefix, lnk)
lnk = strings.Replace(lnk, " ", "+", -1)
link = []byte(lnk)
}
if len(link) > 0 && !markup.IsLink(link) {
lnk := string(link)
lnk = util.URLJoin(prefix, lnk)
lnk = strings.Replace(lnk, " ", "+", -1)
link = []byte(lnk)
}
// Put a link around it pointing to itself by default
out.WriteString(`<a href="`)
out.Write(link)
out.WriteString(`">`)

4
modules/markup/markdown/markdown_test.go
View file

@ -73,6 +73,7 @@ func TestRender_Images(t *testing.T) {
url := "../../.images/src/02/train.jpg"
title := "Train"
href := "https://gitea.io"
result := util.URLJoin(AppSubURL, url)
test(
@ -82,6 +83,9 @@ func TestRender_Images(t *testing.T) {
test(
"[["+title+"|"+url+"]]",
`<p><a href="`+result+`" rel="nofollow"><img src="`+result+`" title="`+title+`" alt="`+title+`"/></a></p>`)
test(
"[!["+title+"]("+url+")]("+href+")",
`<p><a href="`+href+`" rel="nofollow"><img src="`+result+`" alt="`+title+`"/></a></p>`)
}
func testAnswers(baseURLContent, baseURLImages string) []string {