// ХЛЕБ
}

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

func ExampleToValidUTF8() {
	fmt.Printf("%s\n", bytes.ToValidUTF8([]byte("abc"), []byte("\uFFFD")))

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package tar

import "strings"

// Format represents the tar archive format.
//
// The original tar format was introduced in Unix V7.
// Since then, there have been multiple competing formats attempting to
// standardize or extend the V7 format to overcome its limitations.

func (h *FileHeader) SetMode(mode fs.FileMode) {
	h.CreatorVersion = h.CreatorVersion&0xff | creatorUnix<<8
	h.ExternalAttrs = fileModeToUnixMode(mode) << 16

	// set MSDOS attributes too, as the original zip does.
	if mode&fs.ModeDir != 0 {
		h.ExternalAttrs |= msdosDir
	}
	if mode&0200 == 0 {
		h.ExternalAttrs |= msdosReadOnly
	}
}

// isZip64 reports whether the file size exceeds the 32 bit limit

// Len returns the number of bytes of the unread portion of the
// slice.
func (r *Reader) Len() int {
	if r.i >= int64(len(r.s)) {
		return 0
	}
	return int(int64(len(r.s)) - r.i)
}

// Size returns the original length of the underlying byte slice.
// Size is the number of bytes available for reading via [Reader.ReadAt].
// The result is unaffected by any method calls except [Reader.Reset].

// returning the text before and after sep.
// The found result reports whether sep appears in s.
// If sep does not appear in s, cut returns s, nil, false.
//
// Cut returns slices of the original slice s, not copies.
func Cut(s, sep []byte) (before, after []byte, found bool) {
	if i := Index(s, sep); i >= 0 {
		return s[:i], s[i+len(sep):], true
	}
	return s, nil, false
}

	}
	if got, want := fh2.ModifiedDate, fh.ModifiedDate; got != want {
		t.Errorf("ModifiedDate: got %d, want %d\n", got, want)
	}

	if sysfh, ok := fi.Sys().(*FileHeader); !ok && sysfh != fh {
		t.Errorf("Sys didn't return original *FileHeader")
	}
}

func TestFileHeaderRoundTrip(t *testing.T) {
	fh := &FileHeader{
		Name:             "foo.txt",
		UncompressedSize: 987654321,
		ModifiedTime:     1234,
		ModifiedDate:     5678,
	}

			if err != nil {
				return err
			}
			perm = info.Mode() & os.ModePerm
		}

		// Always copy directories (don't symlink them).
		// If we add a file in the overlay, we don't want to add it in the original.
		if info.IsDir() {
			return os.MkdirAll(dstPath, perm|0200)
		}

		// If the OS supports symlinks, use them instead of copying bytes.
		if err := os.Symlink(srcPath, dstPath); err == nil {
			return nil
		}

		n += int64(m)
		if e == io.EOF {
			return n, nil // e is EOF, so return nil explicitly
		}
		if e != nil {
			return n, e
		}
	}
}

// growSlice grows b by n, preserving the original content of b.
// If the allocation fails, it panics with ErrTooLarge.
func growSlice(b []byte, n int) []byte {
	defer func() {
		if recover() != nil {
			panic(ErrTooLarge)
		}
	}()

		h.Mode |= c_ISVTX
	}
	// If possible, populate additional fields from OS-specific
	// FileInfo fields.
	if sys, ok := fi.Sys().(*Header); ok {
		// This FileInfo came from a Header (not the OS). Use the
		// original Header to populate all remaining fields.
		h.Uid = sys.Uid
		h.Gid = sys.Gid
		h.Uname = sys.Uname
		h.Gname = sys.Gname
		h.AccessTime = sys.AccessTime
		h.ChangeTime = sys.ChangeTime
		if sys.Xattrs != nil {

			// If the struct has 3 fields tv_sec, tv_usec, _pad1, then we
			// still want to remove the tv_ prefix.
			// The check for "orig_" here handles orig_eax in the
			// x86 ptrace register sets, which otherwise have all fields
			// with reg_ prefixes.
			if strings.HasPrefix(n.Name, "orig_") || strings.HasPrefix(n.Name, "_") {
				continue
			}
			i := strings.Index(n.Name, "_")
			if i < 0 {
				continue