https://github.com/influxdata/influxdb/issues/7354 - PoC

main.go

package main

import (
  "fmt"
  "syscall"
  "unsafe"
)

const cursorColumn = false

type State struct {
  columns int
}

type winSize struct {
	row, col       uint16
	xpixel, ypixel uint16
}

func (s *State) getColumns() bool {
	var ws winSize
	ok, _, _ := syscall.Syscall(syscall.SYS_IOCTL, uintptr(syscall.Stdout),
		syscall.TIOCGWINSZ, uintptr(unsafe.Pointer(&ws)))
	if int(ok) < 0 {
		return false
	}
	s.columns = int(ws.col)
	if cursorColumn && s.columns > 1 {
		s.columns--
	}
	return true
}

func main() {
  s := State{}
  fmt.Println(s.getColumns())
  fmt.Println(s.columns)
}