tools/lib/isatty/isatty_darwin.go

// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// +build darwin

package isatty

import (
	"os"
	"syscall"
	"unsafe"
)

func isTerminal() bool {
	var termios syscall.Termios
	_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, os.Stdout.Fd(), syscall.TIOCGETA, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
	return err == 0
}