50 lines
1.2 KiB
Go
50 lines
1.2 KiB
Go
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package zim
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import "github.com/pkg/errors"
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func (z *ZimReader) Favicon() (*Article, error) {
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illustration, err := z.getMetadataIllustration()
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if err != nil && !errors.Is(err, ErrNotFound) {
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return nil, errors.WithStack(err)
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}
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if illustration != nil {
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return illustration, nil
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}
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namespaces := []string{"-", "I"}
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entryNames := []string{"favicon", "favicon.png"}
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for _, ns := range namespaces {
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for _, en := range entryNames {
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article, err := z.GetPageNoIndex(ns + "/" + en)
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if err != nil && !errors.Is(err, ErrNotFound) {
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return nil, errors.WithStack(err)
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}
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if article != nil {
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return article, nil
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}
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}
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}
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return nil, errors.WithStack(ErrNotFound)
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}
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func (z *ZimReader) getMetadataIllustration() (*Article, error) {
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metadata, err := z.Metadata(MetadataIllustration96x96at2, MetadataIllustration48x48at1)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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if _, exists := metadata[MetadataIllustration96x96at2]; exists {
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return z.GetPageNoIndex("M/" + string(MetadataIllustration96x96at2))
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}
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if _, exists := metadata[MetadataIllustration48x48at1]; exists {
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return z.GetPageNoIndex("M/" + string(MetadataIllustration48x48at1))
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}
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return nil, errors.WithStack(ErrNotFound)
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}
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