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Handle srcset images with no space after comma

This commit is contained in:
Frédéric Guillot 2021-10-13 21:27:39 -07:00 committed by fguillot
parent c2c9db737b
commit 5f9d6fd81b
2 changed files with 14 additions and 18 deletions
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12
reader/sanitizer/sanitizer.go
View File

@ -19,7 +19,7 @@ import (
var (
youtubeEmbedRegex = regexp.MustCompile(`//www\.youtube\.com/embed/(.*)`)
splitSrcsetRegex = regexp.MustCompile(`,\s+`)
splitSrcsetRegex = regexp.MustCompile(`,\s?`)
)
// Sanitize returns safe HTML.
@ -457,13 +457,9 @@ func sanitizeSrcsetAttr(baseURL, value string) string {
nbParts := len(parts)
if nbParts > 0 {
sanitizedSource := parts[0]
if !strings.HasPrefix(parts[0], "data:") {
var err error
sanitizedSource, err = url.AbsoluteURL(baseURL, parts[0])
if err != nil {
continue
}
sanitizedSource, err := url.AbsoluteURL(baseURL, parts[0])
if err != nil {
continue
}
if nbParts == 2 && isValidWidthOrDensityDescriptor(parts[1]) {

20
reader/sanitizer/sanitizer_test.go
View File

@ -45,16 +45,6 @@ func TestImgWithSrcset(t *testing.T) {
}
}
func TestImgWithSrcsetAndDataURL(t *testing.T) {
input := `<img srcset="data:image/gif;base64,test" src="http://example.org/example-320w.jpg" alt="Example">`
expected := `<img srcset="data:image/gif;base64,test" src="http://example.org/example-320w.jpg" alt="Example" loading="lazy">`
output := Sanitize("http://example.org/", input)
if output != expected {
t.Errorf(`Wrong output: %s`, output)
}
}
func TestSourceWithSrcsetAndMedia(t *testing.T) {
input := `<picture><source media="(min-width: 800px)" srcset="elva-800w.jpg"></picture>`
expected := `<picture><source media="(min-width: 800px)" srcset="http://example.org/elva-800w.jpg"></picture>`
@ -75,6 +65,16 @@ func TestMediumImgWithSrcset(t *testing.T) {
}
}
func TestEconomistImgWithSrcset(t *testing.T) {
input := `<img loading="lazy" src="https://www.economist.com/img/b/608/634/90/sites/default/files/images/print-edition/20211009_WWC585.png" srcSet="https://www.economist.com/img/b/200/209/90/sites/default/files/images/print-edition/20211009_WWC585.png 200w,https://www.economist.com/img/b/300/313/90/sites/default/files/images/print-edition/20211009_WWC585.png 300w,https://www.economist.com/img/b/400/417/90/sites/default/files/images/print-edition/20211009_WWC585.png 400w,https://www.economist.com/img/b/600/626/90/sites/default/files/images/print-edition/20211009_WWC585.png 600w,https://www.economist.com/img/b/640/667/90/sites/default/files/images/print-edition/20211009_WWC585.png 640w,https://www.economist.com/img/b/800/834/90/sites/default/files/images/print-edition/20211009_WWC585.png 800w,https://www.economist.com/img/b/1000/1043/90/sites/default/files/images/print-edition/20211009_WWC585.png 1000w,https://www.economist.com/img/b/1280/1335/90/sites/default/files/images/print-edition/20211009_WWC585.png 1280w" sizes="300px" alt=""/>`
expected := `<img src="https://www.economist.com/img/b/608/634/90/sites/default/files/images/print-edition/20211009_WWC585.png" srcset="https://www.economist.com/img/b/200/209/90/sites/default/files/images/print-edition/20211009_WWC585.png 200w, https://www.economist.com/img/b/300/313/90/sites/default/files/images/print-edition/20211009_WWC585.png 300w, https://www.economist.com/img/b/400/417/90/sites/default/files/images/print-edition/20211009_WWC585.png 400w, https://www.economist.com/img/b/600/626/90/sites/default/files/images/print-edition/20211009_WWC585.png 600w, https://www.economist.com/img/b/640/667/90/sites/default/files/images/print-edition/20211009_WWC585.png 640w, https://www.economist.com/img/b/800/834/90/sites/default/files/images/print-edition/20211009_WWC585.png 800w, https://www.economist.com/img/b/1000/1043/90/sites/default/files/images/print-edition/20211009_WWC585.png 1000w, https://www.economist.com/img/b/1280/1335/90/sites/default/files/images/print-edition/20211009_WWC585.png 1280w" sizes="300px" alt="" loading="lazy"/>`
output := Sanitize("http://example.org/", input)
if output != expected {
t.Errorf(`Wrong output: %s`, output)
}
}
func TestSelfClosingTags(t *testing.T) {
input := `<p>This <br> is a <strong>text</strong> <br/>with an image: <img src="http://example.org/" alt="Test" loading="lazy"/>.</p>`
output := Sanitize("http://example.org/", input)