Auth: Refactor cluster configuration and provisioning API endpoints #98

Signed-off-by: Michael Mayer <michael@photoprism.app>

pkg/clean/ascii.go

@@ -1,18 +1,25 @@
 package clean
 
-// ASCII removes all non-ascii characters from a string and returns it.
+// ASCII removes all non-ASCII bytes from a string.
+// Fast path: return the original string when it already contains only ASCII.
 func ASCII(s string) string {
 	if s == "" {
 		return ""
 	}
 
-	result := make([]rune, 0, len(s))
-
-	for _, r := range s {
-		if r <= 127 {
-			result = append(result, r)
+	// Fast path: all bytes < 128 → no allocation.
+	for i := 0; i < len(s); i++ {
+		if s[i] >= 0x80 { // non-ASCII
+			// Slow path: filter into a new byte slice.
+			dst := make([]byte, 0, len(s))
+			for j := 0; j < len(s); j++ {
+				b := s[j]
+				if b < 0x80 {
+					dst = append(dst, b)
+				}
+			}
+			return string(dst)
 		}
 	}
-
-	return string(result)
+	return s
 }