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refactor(rewriter): avoid the use of regex in addDynamicImage

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See https://dustri.org/b/parsing-noscript-tags-with-goquery.html for the whole
story.
This commit is contained in:
Julien Voisin 2024-12-16 01:56:39 +00:00 • committed by GitHub
parent 14a6e8ed3a
commit cfda948c3a
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GPG key ID: B5690EEEBB952194
2 changed files with 6 additions and 9 deletions
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11
internal/reader/rewrite/rewrite_functions.go
View file

@ -23,7 +23,6 @@ var (
youtubeRegex = regexp.MustCompile(`youtube\.com/watch\?v=(.*)$`)
youtubeIdRegex = regexp.MustCompile(`youtube_id"?\s*[:=]\s*"([a-zA-Z0-9_-]{11})"`)
invidioRegex = regexp.MustCompile(`https?://(.*)/watch\?v=(.*)`)
imgRegex = regexp.MustCompile(`<img [^>]+>`)
textLinkRegex = regexp.MustCompile(`(?mi)(\bhttps?:\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])`)
)
@ -84,10 +83,11 @@ func addMailtoSubject(entryContent string) string {
}
func addDynamicImage(entryContent string) string {
doc, err := goquery.NewDocumentFromReader(strings.NewReader(entryContent))
parserHtml, err := nethtml.ParseWithOptions(strings.NewReader(entryContent), nethtml.ParseOptionEnableScripting(false))
if err != nil {
return entryContent
}
doc := goquery.NewDocumentFromNode(parserHtml)
// Ordered most preferred to least preferred.
candidateAttrs := []string{
@ -149,12 +149,9 @@ func addDynamicImage(entryContent string) string {
if !changed {
doc.Find("noscript").Each(func(i int, noscript *goquery.Selection) {
matches := imgRegex.FindAllString(noscript.Text(), 2)
if len(matches) == 1 {
if img := noscript.Find("img"); img.Length() == 1 {
img.Unwrap()
changed = true
noscript.ReplaceWithHtml(matches[0])
}
})
}

4
internal/reader/rewrite/rewriter_test.go
View file

@ -256,7 +256,7 @@ func TestRewriteWithNoLazyImage(t *testing.T) {
func TestRewriteWithLazyImage(t *testing.T) {
controlEntry := &model.Entry{
Title: `A title`,
Content: `<img src="https://example.org/image.jpg" data-url="https://example.org/image.jpg" alt="Image"/><noscript><img src="https://example.org/fallback.jpg" alt="Fallback"></noscript>`,
Content: `<img src="https://example.org/image.jpg" data-url="https://example.org/image.jpg" alt="Image"/><noscript><img src="https://example.org/fallback.jpg" alt="Fallback"/></noscript>`,
}
testEntry := &model.Entry{
Title: `A title`,
@ -272,7 +272,7 @@ func TestRewriteWithLazyImage(t *testing.T) {
func TestRewriteWithLazyDivImage(t *testing.T) {
controlEntry := &model.Entry{
Title: `A title`,
Content: `<img src="https://example.org/image.jpg" alt="Image"/><noscript><img src="https://example.org/fallback.jpg" alt="Fallback"></noscript>`,
Content: `<img src="https://example.org/image.jpg" alt="Image"/><noscript><img src="https://example.org/fallback.jpg" alt="Fallback"/></noscript>`,
}
testEntry := &model.Entry{
Title: `A title`,