You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: win_event_handler.go
    path of file: ./repos/moby/vendor/github.com/Azure/go-ansiterm/winterm
    
    the code of the file until where you have to start completion: // +build windows

package winterm

import (
	"bytes"
	"log"
	"os"
	"strconv"

	"github.com/Azure/go-ansiterm"
)

type windowsAnsiEventHandler struct {
	fd             uintptr
	file           *os.File
	infoReset      *CONSOLE_SCREEN_BUFFER_INFO
	sr             scrollRegion
	buffer         bytes.Buffer
	attributes     uint16
	inverted       bool
	wrapNext       bool
	drewMarginByte bool
	originMode     bool
	marginByte     byte
	curInfo        *CONSOLE_SCREEN_BUFFER_INFO
	curPos         COORD
	logf           func(string, ...interface{})
}

type Option func(*windowsAnsiEventHandler)

func WithLogf(f func(string, ...interface{})) Option {
	return func(w *windowsAnsiEventHandler) {
		w.logf = f
	}
}

func CreateWinEventHandler(fd uintptr, file *os.File, opts ...Option) ansiterm.AnsiEventHandler {
	infoReset, err := GetConsoleScreenBufferInfo(fd)
	if err != nil {
		return nil
	}

	h := &windowsAnsiEventHandler{
		fd:         fd,
		file:       file,
		infoReset:  infoReset,
		attribu
    
func (h *windowsAnsiEventHandler) Execute(b byte) error {
	switch b {
	case ansiterm.ANSI_TAB:
		h.logf("Execute(TAB)")
		// Move to the next tab stop, but preserve auto-wrap if already set.
		if !h.wrapNext {
			pos, info, err := h.getCurrentInfo()
			if err != nil {
				return err
			}
			pos.X = (pos.X + 8) - pos.X%8
			if pos.X >= info.Size.X {
				pos.X = info.Size.X - 1
			}
			if err := h.Flush(); err != nil {
				return err
			}
			if err := SetConsoleCursorPosition(h.fd, pos); err != nil {
				return err
			}
		}
		return nil

	case ansiterm.ANSI_BEL:
		h.buffer.WriteByte(ansiterm.ANSI_BEL)
		return nil

	case ansiterm.ANSI_BACKSPACE:
		if h.wrapNext {
			if err := h.Flush(); err != nil {
				return err
			}
			h.clearWrap()
		}
		pos, _, err := h.getCurrentInfo()
		if err != nil {
			return err
		}
		if pos.X > 0 {
			pos.X--
			h.updatePos(pos)
			h.buffer.WriteByte(ansiterm.ANSI_BACKSPACE)
		}
		return nil

	case ansiterm.ANSI_VERTICAL_TAB, ansiterm.ANSI_FORM_FEED:
		// Treat as true LF.
		return h.executeLF()

	case ansiterm.ANSI_LINE_FEED:
		// Simulate a CR and LF for now since there is no way in go-ansiterm
		// to tell if the LF should include CR (and more things break when it's
		// missing than when it's incorrectly added).
		handled, err := h.simulateLF(true)
		if handled || err != nil {
			return err
		}
		return h.buffer.WriteByte(ansiterm.ANSI_LINE_FEED)

	case ansiterm.ANSI_CARRIAGE_RETURN:
		if h.wrapNext {
			if err := h.Flush(); err != nil {
				return err
			}
			h.clearWrap()
		}
		pos, _, err := h.getCurrentInfo()
		if err != nil {
			return err
		}
		if pos.X != 0 {
			pos.X = 0
			h.updatePos(pos)
			h.buffer.WriteByte(ansiterm.ANSI_CARRIAGE_RETURN)
		}
		return nil

	default:
		return nil
	}
}