// is a *[Writer].
func NewWriter(w io.Writer, order Order, litWidth int) io.WriteCloser {
	return newWriter(w, order, litWidth)
}

func newWriter(dst io.Writer, order Order, litWidth int) *Writer {
	w := new(Writer)
	w.init(dst, order, litWidth)
	return w
}

func (w *Writer) init(dst io.Writer, order Order, litWidth int) {
	switch order {
	case LSB:

	"errors"
	"fmt"
	"io"
	"net/textproto"
	"slices"
	"strings"
)

// A Writer generates multipart messages.
type Writer struct {
	w        io.Writer
	boundary string
	lastpart *part
}

// NewWriter returns a new multipart [Writer] with a random boundary,
// writing to w.
func NewWriter(w io.Writer) *Writer {
	return &Writer{
		w:        w,
		boundary: randomBoundary(),
	}
}

	"path"
	"slices"
	"strings"
	"time"
)

// Writer provides sequential writing of a tar archive.
// [Writer.WriteHeader] begins a new file with the provided [Header],
// and then Writer can be treated as an io.Writer to supply that file's data.
type Writer struct {
	w    io.Writer
	pad  int64      // Amount of padding to write after current file entry
	curr fileWriter // Writer for current file entry

// NewWriter creates a new byte format writer.
func NewWriter(w io.Writer, v version.Version) (*Writer, error) {
	_, err := version.WriteHeader(w, v)
	return &Writer{w: w, v: v, specs: v.Specs()}, err
}

// WriteEvent writes a single event to the trace wire format stream.
func (w *Writer) WriteEvent(e Event) error {
	// Check version.
	if e.Version != w.v {

			return i
		}
	}
	return -1
}

// writer is a buffered writer.
type writer interface {
	Flush() error
	io.Writer
	io.ByteWriter
}

// encoder encodes an image to the GIF format.
type encoder struct {
	// w is the writer to write to. err is the first error encountered during
	// writing. All attempted writes after the first error become no-ops.
	w   writer
	err error

	// last.
	// And it's also annoying if it's possible for users to set
	// different TTLs per Answer.
	if w.a.wrote {
		return
	}
	w.a.ttl = seconds

}

type AWriter struct{ ResponseWriter }

func (w AWriter) AddIP(v4 [4]byte) {
	w.a.wrote = true
	err := w.a.builder.AResource(w.header(), dnsmessage.AResource{A: v4})
	if err != nil {
		panic(err)
	}
}

		nbuf += len
		return
	}

	write(dumpfd, unsafe.Pointer(&buf), int32(nbuf))
	if len >= bufSize {
		write(dumpfd, data, int32(len))
		nbuf = 0
	} else {
		copy(buf[:], (*[bufSize]byte)(data)[:len])
		nbuf = len
	}
}

func dwritebyte(b byte) {
	dwrite(unsafe.Pointer(&b), 1)
}

func flush() {
	write(dumpfd, unsafe.Pointer(&buf), int32(nbuf))
	nbuf = 0
}

	return pread(fd, buf, n, -1)
}

//go:nosplit
func write1(fd uintptr, buf unsafe.Pointer, n int32) int32 {
	return pwrite(int32(fd), buf, n, -1)
}

var _badsignal = []byte("runtime: signal received on thread not created by Go.\n")

// This runs on a foreign stack, without an m or a g. No stack split.
//
//go:nosplit
func badsignal2() {
	pwrite(2, unsafe.Pointer(&_badsignal[0]), int32(len(_badsignal)), -1)

//sys	Umask(newmask int) (oldmask int)
//sys	Undelete(path string) (err error)
//sys	Unlink(path string) (err error)
//sys	Unmount(path string, flags int) (err error)
//sys	write(fd int, p []byte) (n int, err error)
//sys	writev(fd int, iovecs []Iovec) (cnt uintptr, err error)
//sys   mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)

		}
		if n == 0 {
			return nn, io.ErrUnexpectedEOF
		}
	}
}

// Pwrite wraps the pwrite system call.
func (fd *FD) Pwrite(p []byte, off int64) (int, error) {
	// Call incref, not writeLock, because since pwrite specifies the
	// offset it is independent from other writes.
	// Similarly, using the poller doesn't make sense for pwrite.
	if err := fd.incref(); err != nil {
		return 0, err
	}
	defer fd.decref()