package utils

import (

"fmt"

"os"

"github.com/mattn/go-isatty"

"golang.org/x/crypto/ssh/terminal"

)

// TODO I don't like this use of interface{} but we need to accept both io.Writer and io.Reader

// interfaces.

var IsTerminal = func(w interface{}) bool {

if f, isFile := w.(*os.File); isFile {

return isatty.IsTerminal(f.Fd()) || IsCygwinTerminal(f)

}

return false

}

func IsCygwinTerminal(w interface{}) bool {

if f, isFile := w.(*os.File); isFile {

return isatty.IsCygwinTerminal(f.Fd())

}

return false

}

var TerminalSize = func(w interface{}) (int, int, error) {

if f, isFile := w.(*os.File); isFile {

return terminal.GetSize(int(f.Fd()))

}

return 0, 0, fmt.Errorf("%v is not a file", w)

}