pkg/reference: Spec.Digest(): inline SplitObject code

thaJeztah · thaJeztah · commit a5fce38f31bd · 2024-06-27T12:05:23.000+02:00
Inline the relevant code from SplitObject, as we're only interested
in the digest portion.

Signed-off-by: Sebastiaan van Stijn &lt;github@gone.nl&gt;
diff --git a/pkg/reference/reference.go b/pkg/reference/reference.go
@@ -135,8 +135,12 @@ func (r Spec) Hostname() string {
 // Digest returns the digest portion of the reference spec. This may be a
 // partial or invalid digest, which may be used to lookup a complete digest.
 func (r Spec) Digest() digest.Digest {
-	_, dgst := SplitObject(r.Object)
-	return dgst
+	i := strings.Index(r.Object, "@")
+
+	if i < 0 {
+		return ""
+	}
+	return digest.Digest(r.Object[i+1:])
 }
 
 // String returns the normalized string for the ref.
