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refactor(icon): simplify findIconURLsFromHTMLDocument

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- Don't define the queries before possible early returns
- Check for the presence of the href attribute in the queries, instead of later
  on iterating on the selection
- Add two edge-cases to the tests
- Use EachIter instead of Each, if only to avoid the lambda
This commit is contained in:
jvoisin 2025-07-11 00:05:22 +02:00 • committed by Frédéric Guillot
parent 57bd384951
commit 0e9da3a090
2 changed files with 16 additions and 17 deletions
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31
internal/reader/icon/finder.go
View file

@ -241,13 +241,6 @@ func resizeIcon(icon *model.Icon) *model.Icon {
}
func findIconURLsFromHTMLDocument(body io.Reader, contentType string) ([]string, error) {
queries := []string{
"link[rel='icon' i]",
"link[rel='shortcut icon' i]",
"link[rel='icon shortcut' i]",
"link[rel='apple-touch-icon-precomposed.png']",
}
htmlDocumentReader, err := encoding.NewCharsetReader(body, contentType)
if err != nil {
return nil, fmt.Errorf("icon: unable to create charset reader: %w", err)
@ -258,20 +251,26 @@ func findIconURLsFromHTMLDocument(body io.Reader, contentType string) ([]string,
return nil, fmt.Errorf("icon: unable to read document: %v", err)
}
queries := []string{
"link[rel='icon' i][href]",
"link[rel='shortcut icon' i][href]",
"link[rel='icon shortcut' i][href]",
"link[rel='apple-touch-icon-precomposed.png'][href]",
}
var iconURLs []string
for _, query := range queries {
slog.Debug("Searching icon URL in HTML document", slog.String("query", query))
doc.Find(query).Each(func(i int, s *goquery.Selection) {
if href, exists := s.Attr("href"); exists {
if iconURL := strings.TrimSpace(href); iconURL != "" {
iconURLs = append(iconURLs, iconURL)
slog.Debug("Found icon URL in HTML document",
slog.String("query", query),
slog.String("icon_url", iconURL))
}
for _, s := range doc.Find(query).EachIter() {
href, _ := s.Attr("href")
if iconURL := strings.TrimSpace(href); iconURL != "" {
iconURLs = append(iconURLs, iconURL)
slog.Debug("Found icon URL in HTML document",
slog.String("query", query),
slog.String("icon_url", iconURL))
}
})
}
}
return iconURLs, nil

2
internal/reader/icon/finder_test.go
View file

@ -115,7 +115,7 @@ func TestParseInvalidImageDataURLWithWrongPrefix(t *testing.T) {
func TestParseDocumentWithWhitespaceIconURL(t *testing.T) {
html := `<link rel="shortcut icon" href="
/static/img/favicon.ico
">`
"><link rel='shortcut icon'><link rel='shortcut icon' href=" ">`
iconURLs, err := findIconURLsFromHTMLDocument(strings.NewReader(html), "text/html")
if err != nil {