add all encodings from https://pkg.go.dev/golang.org/x/[email protected]/e…

…ncoding/charmap

Signed-off-by: Sandor Szücs <[email protected]>

filters/builtin/header_encode.go

@@ -66,8 +66,63 @@ func (spec *encodeHeaderSpec) CreateFilter(args []interface{}) (filters.Filter,
 	switch to {
 	case "ISO8859_1":
 		encoder = charmap.ISO8859_1.NewEncoder()
+	case "ISO8859_10":
+		encoder = charmap.ISO8859_10.NewEncoder()
+	case "ISO8859_13":
+		encoder = charmap.ISO8859_13.NewEncoder()
+	case "ISO8859_14":
+		encoder = charmap.ISO8859_14.NewEncoder()
+	case "ISO8859_15":
+		encoder = charmap.ISO8859_15.NewEncoder()
+	case "ISO8859_16":
+		encoder = charmap.ISO8859_16.NewEncoder()
+	case "ISO8859_2":
+		encoder = charmap.ISO8859_2.NewEncoder()
+	case "ISO8859_3":
+		encoder = charmap.ISO8859_3.NewEncoder()
+	case "ISO8859_4":
+		encoder = charmap.ISO8859_4.NewEncoder()
+	case "ISO8859_5":
+		encoder = charmap.ISO8859_5.NewEncoder()
+	case "ISO8859_6":
+		encoder = charmap.ISO8859_6.NewEncoder()
+	case "ISO8859_7":
+		encoder = charmap.ISO8859_7.NewEncoder()
+	case "ISO8859_8":
+		encoder = charmap.ISO8859_8.NewEncoder()
+	case "ISO8859_9":
+		encoder = charmap.ISO8859_9.NewEncoder()
+	case "KOI8R":
+		encoder = charmap.KOI8R.NewEncoder()
+	case "KOI8U":
+		encoder = charmap.KOI8U.NewEncoder()
+	case "Macintosh":
+		encoder = charmap.Macintosh.NewEncoder()
+	case "MacintoshCyrillic":
+		encoder = charmap.MacintoshCyrillic.NewEncoder()
+	case "Windows1250":
+		encoder = charmap.Windows1250.NewEncoder()
+	case "Windows1251":
+		encoder = charmap.Windows1251.NewEncoder()
 	case "Windows1252":
 		encoder = charmap.Windows1252.NewEncoder()
+	case "Windows1253":
+		encoder = charmap.Windows1253.NewEncoder()
+	case "Windows1254":
+		encoder = charmap.Windows1254.NewEncoder()
+	case "Windows1255":
+		encoder = charmap.Windows1255.NewEncoder()
+	case "Windows1256":
+		encoder = charmap.Windows1256.NewEncoder()
+	case "Windows1257":
+		encoder = charmap.Windows1257.NewEncoder()
+	case "Windows1258":
+		encoder = charmap.Windows1258.NewEncoder()
+	case "Windows874":
+		encoder = charmap.Windows874.NewEncoder()
+	default:
+		log.Errorf("Unknown encoder for %q", to)
+		return nil, filters.ErrInvalidFilterParameters
 	}
 
 	return &encodeHeader{