switch {
						case r >= 'a' && r <= 'z':
							return r
						case r >= 'A' && r <= 'Z':
							return r
						case r >= '0' && r <= '9':
							return r
						case strings.ContainsAny(string(r), "+=-_()!@."):
							return r
						default:
							return '_'
						}
					}, file)
				}
				err := data.files(func(name string, data []byte) {

func isValidVolname(volname string) bool {
	if len(volname) < 3 {
		return false
	}

	if runtime.GOOS == "windows" {
		// Volname shouldn't have reserved characters in Windows.
		return !strings.ContainsAny(volname, `\:*?\"<>|`)
	}

	return true
}

// xlStorage - implements StorageAPI interface.
type xlStorage struct {
	// Indicate of NSScanner is in progress in this disk
	scanning int32

			Bucket: bucket,
			Object: object,
		}
	}
	if runtime.GOOS == globalWindowsOSName {
		// Explicitly disallowed characters on windows.
		// Avoids most problematic names.
		if strings.ContainsAny(object, `\:*?"|<>`) {
			return ObjectNameInvalid{
				Bucket: bucket,
				Object: object,
			}
		}
	}
	return nil
}

// SlashSeparator - slash separator.
const SlashSeparator = "/"

func (o listPathOptions) encodeMarker(marker string) string {
	if o.ID == "" {
		// Mark as returning listing...
		return fmt.Sprintf("%s[minio_cache:%s,return:]", marker, markerTagVersion)
	}
	if strings.ContainsAny(o.ID, "[:,") {
		internalLogIf(context.Background(), fmt.Errorf("encodeMarker: uuid %s contained invalid characters", o.ID))
	}