n, err = preadv(fd, iovecs, off)
	return n, err
}

//sys	writev(fd int, iovs []Iovec) (n int, err error)

func Writev(fd int, iovs [][]byte) (n int, err error) {
	iovecs := bytes2iovec(iovs)
	n, err = writev(fd, iovecs)
	return n, err
}

//sys	pwritev(fd int, iovs []Iovec, off int64) (n int, err error)

func Pwritev(fd int, iovs [][]byte, off int64) (n int, err error) {
	iovecs := bytes2iovec(iovs)

package unix

import (
	"unsafe"
)

//go:cgo_import_dynamic libc_readv readv "libc.so"
//go:cgo_import_dynamic libc_preadv preadv "libc.so"
//go:cgo_import_dynamic libc_writev writev "libc.so"
//go:cgo_import_dynamic libc_pwritev pwritev "libc.so"
//go:cgo_import_dynamic libc_accept4 accept4 "libsocket.so"

//go:linkname procreadv libc_readv
//go:linkname procpreadv libc_preadv
//go:linkname procwritev libc_writev

// license that can be found in the LICENSE file.

//go:build unix

package poll

import (
	"io"
	"runtime"
	"syscall"
)

// Writev wraps the writev system call.
func (fd *FD) Writev(v *[][]byte) (int64, error) {
	if err := fd.writeLock(); err != nil {
		return 0, err
	}
	defer fd.writeUnlock()
	if err := fd.pd.prepareWrite(fd.isFile); err != nil {
		return 0, err
	}

        StringWriter sWriter = new StringWriter();
        PrintWriter pWriter = new PrintWriter(sWriter);

        error.printStackTrace(pWriter);

        System.out.println("[" + prefix + "] " + sWriter.toString());
    }

    private void print(String prefix, CharSequence content, Throwable error) {
        StringWriter sWriter = new StringWriter();

}

// Write encodes p using quoted-printable encoding and writes it to the
// underlying [io.Writer]. It limits line length to 76 characters. The encoded
// bytes are not necessarily flushed until the [Writer] is closed.
func (w *Writer) Write(p []byte) (n int, err error) {
	for i, b := range p {
		switch {
		// Simple writes are done in batch.
		case b >= '!' && b <= '~' && b != '=':
			continue

// 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 {

// 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:

	w       *bufio.Writer
}

// NewWriter returns a new Writer that writes to w.
func NewWriter(w io.Writer) *Writer {
	return &Writer{
		Comma: ',',
		w:     bufio.NewWriter(w),
	}
}

// Write writes a single CSV record to w along with any necessary quoting.
// A record is a slice of strings with each string being one field.
// Writes are buffered, so [Writer.Flush] must eventually be called to ensure

	"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(),
	}
}

package textproto

import (
	"bufio"
	"fmt"
	"io"
)

// A Writer implements convenience methods for writing
// requests or responses to a text protocol network connection.
type Writer struct {
	W   *bufio.Writer
	dot *dotWriter
}

// NewWriter returns a new [Writer] writing to w.
func NewWriter(w *bufio.Writer) *Writer {
	return &Writer{W: w}
}

var crnl = []byte{'\r', '\n'}