package tar

import (
	"bytes"
	"fmt"
	"strconv"
	"strings"
	"time"
)

// hasNUL reports whether the NUL character exists within s.
func hasNUL(s string) bool {
	return strings.Contains(s, "\x00")
}

// isASCII reports whether the input is an ASCII C-style string.
func isASCII(s string) bool {
	for _, c := range s {
		if c >= 0x80 || c == 0x00 {
			return false
		}
	}
	return true
}

}

func (er erasureObjects) getMultipartSHADir(bucket, object string) string {
	return getSHA256Hash([]byte(pathJoin(bucket, object)))
}

// checkUploadIDExists - verify if a given uploadID exists and is valid.
func (er erasureObjects) checkUploadIDExists(ctx context.Context, bucket, object, uploadID string, write bool) (fi FileInfo, metArr []FileInfo, err error) {
	defer func() {
		if errors.Is(err, errFileNotFound) {

	"istio.io/istio/pilot/pkg/util/protoconv"
	v3 "istio.io/istio/pilot/pkg/xds/v3"
)

// GetLastUpdatedDynamicRouteTime retrieves the LastUpdated timestamp of the
// most recently updated DynamicRouteConfig
func (w *Wrapper) GetLastUpdatedDynamicRouteTime() (*time.Time, error) {
	routeDump, err := w.GetRouteConfigDump()
	if err != nil {
		return nil, err
	}
	drc := routeDump.GetDynamicRouteConfigs()

	}
	chkNumVersions := func(fis []FileInfo) bool {
		for i := 0; i < len(fis)-1; i++ {
			if fis[i].NumVersions != fis[i+1].NumVersions {
				return false
			}
		}
		return true
	}
	if !chkNumVersions(fivs.Versions) {
		t.Fatalf("Expected all versions to have the same NumVersions")
	}

	sort.Slice(versions, func(i, j int) bool {
		if versions[i].IsLatest {
			return true

}

// UnmarshalJSON - Validate SS and RRS parity when unmarshalling JSON.
func (sCfg *Config) UnmarshalJSON(data []byte) error {
	type Alias Config
	aux := &struct {
		*Alias
	}{
		Alias: (*Alias)(sCfg),
	}
	return json.Unmarshal(data, &aux)
}

// IsValid - returns true if input string is a valid
// storage class kind supported.
func IsValid(sc string) bool {
	return sc == RRS || sc == STANDARD
}

func loadMetacacheSample(t testing.TB) *metacacheReader {
	b, err := os.ReadFile("testdata/metacache.s2")
	if err != nil {
		t.Fatal(err)
	}
	return newMetacacheReader(bytes.NewReader(b))
}

func loadMetacacheSampleEntries(t testing.TB) metaCacheEntriesSorted {
	r := loadMetacacheSample(t)
	defer r.Close()

	"fmt"
	"os"
	"strings"
	"sync"
	"syscall"
	"unsafe"

	"golang.org/x/sys/unix"
)

func access(name string) error {
	if err := unix.Access(name, unix.F_OK); err != nil {
		return &os.PathError{Op: "lstat", Path: name, Err: err}
	}
	return nil
}

// openFileWithFD return 'fd' based file descriptor
func openFileWithFD(name string, flag int, perm os.FileMode) (fd int, err error) {
	switch flag & writeMode {

		} else if k != "" {
			settings[k] = k
		}
	}

	return settings
}

func toColumns(val string) (results []string) {
	if val != "" {
		for _, v := range strings.Split(val, ",") {
			results = append(results, strings.TrimSpace(v))
		}
	}
	return
}

func removeSettingFromTag(tag reflect.StructTag, names ...string) reflect.StructTag {
	for _, name := range names {

func (r *PReader) startReaders() {
	r.bufferPool.New = func() interface{} {
		return make([]byte, jsonSplitSize+1024)
	}

	// Create queue
	r.queue = make(chan *queueItem, runtime.GOMAXPROCS(0))
	r.input = make(chan *queueItem, runtime.GOMAXPROCS(0))
	r.readerWg.Add(1)

	// Start splitter
	go func() {
		defer close(r.input)
		defer close(r.queue)

}

// Mask returns the type as mask.
// Compound "All" types are expanded.
func (name Name) Mask() uint64 {
	if name < objectSingleTypesEnd {
		return 1 << (name - 1)
	}
	var mask uint64
	for _, n := range name.Expand() {
		mask |= 1 << (n - 1)
	}
	return mask
}

// String - returns string representation of event type.
func (name Name) String() string {
	switch name {
	case BucketCreated: