"crypto/sha512"
	"strings"

	"github.com/IBM/sarama"
	"github.com/xdg/scram"

	"github.com/minio/minio/internal/hash/sha256"
)

func initScramClient(cfg Config, config *sarama.Config) {
	switch strings.ToLower(cfg.SASL.Mechanism) {
	case "sha512":
		config.Net.SASL.SCRAMClientGeneratorFunc = func() sarama.SCRAMClient { return &XDGSCRAMClient{HashGeneratorFcn: KafkaSHA512} }

	var modeStr, tillStr string
	ok := false

	modeStr, ok = meta[strings.ToLower(AmzObjectLockMode)]
	if !ok {
		modeStr, ok = meta[AmzObjectLockMode]
	}
	if ok {
		mode = parseRetMode(modeStr)
	} else {
		return ObjectRetention{}
	}

	tillStr, ok = meta[strings.ToLower(AmzObjectLockRetainUntilDate)]
	if !ok {
		tillStr, ok = meta[AmzObjectLockRetainUntilDate]
	}
	if ok {

func registerMetricsRouter(router *mux.Router) {
	// metrics router
	metricsRouter := router.NewRoute().PathPrefix(minioReservedBucketPath).Subrouter()
	authType := prometheusAuthType(strings.ToLower(env.Get(EnvPrometheusAuthType, string(prometheusJWT))))

	auth := AuthMiddleware
	if authType == prometheusPublic {
		auth = NoAuthMiddleware
	}
	metricsRouter.Handle(prometheusMetricsPathLegacy, auth(metricsHandler()))

			j++
		}
	}
	return string(t)
}

// s3EncodeName encodes string in response when encodingType is specified in AWS S3 requests.
func s3EncodeName(name, encodingType string) string {
	if strings.ToLower(encodingType) == "url" {
		return s3URLEncode(name)
	}
	return name
}

// getHandlerName returns the name of the handler function. It takes the type

	"strings"

	"github.com/IBM/sarama"
	"github.com/xdg/scram"

	"github.com/minio/minio/internal/hash/sha256"
)

func initScramClient(args KafkaArgs, config *sarama.Config) {
	switch strings.ToLower(args.SASL.Mechanism) {
	case "sha512":
		config.Net.SASL.SCRAMClientGeneratorFunc = func() sarama.SCRAMClient { return &XDGSCRAMClient{HashGeneratorFcn: KafkaSHA512} }

func ExampleToLower() {
	fmt.Printf("%s", bytes.ToLower([]byte("Gopher")))
	// Output: gopher
}

func ExampleToLowerSpecial() {
	str := []byte("AHOJ VÝVOJÁRİ GOLANG")
	totitle := bytes.ToLowerSpecial(unicode.AzeriCase, str)
	fmt.Println("Original : " + string(str))
	fmt.Println("ToLower : " + string(totitle))
	// Output:
	// Original : AHOJ VÝVOJÁRİ GOLANG
	// ToLower : ahoj vývojári golang
}

func getCanonicalHeaders(signedHeaders http.Header) string {
	var headers []string
	vals := make(http.Header)
	for k, vv := range signedHeaders {
		k = strings.ToLower(k)
		headers = append(headers, k)
		vals[k] = vv
	}
	sort.Strings(headers)

	var buf bytes.Buffer
	for _, k := range headers {
		buf.WriteString(k)
		buf.WriteByte(':')
		for idx, v := range vals[k] {

	switch v := val.(type) {
	case string:
		return v
	default:
		return ""
	}
}

// toLowerString - safely convert interface to lower string
func toLowerString(val interface{}) string {
	return strings.ToLower(toString(val))
}

// toInteger _ Safely convert interface to integer without causing panic.
func toInteger(val interface{}) (int64, error) {
	switch v := val.(type) {
	case float64:
		return int64(v), nil

// to do case insensitive checks.
func HasSuffix(s string, suffix string) bool {
	if runtime.GOOS == globalWindowsOSName {
		return strings.HasSuffix(strings.ToLower(s), strings.ToLower(suffix))
	}
	return strings.HasSuffix(s, suffix)
}

// Validates if two strings are equal.
func isStringEqual(s1 string, s2 string) bool {
	if runtime.GOOS == globalWindowsOSName {

			continue
		}

		var isSet bool
		for _, userMetadataPrefix := range userMetadataKeyPrefixes {
			if !stringsHasPrefixFold(k, userMetadataPrefix) {
				continue
			}
			w.Header()[strings.ToLower(k)] = []string{v}
			isSet = true
			break
		}

		if !isSet {
			w.Header().Set(k, v)
		}
	}

	var start, rangeLen int64
	totalObjectSize, err := objInfo.GetActualSize()