1// Copyright 2011 The Go Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style 3// license that can be found in the LICENSE file. 4 5// +build darwin dragonfly freebsd linux,!appengine netbsd openbsd 6 7package readline 8 9import ( 10 "syscall" 11 "unsafe" 12) 13 14type Termios syscall.Termios 15 16// GetSize returns the dimensions of the given terminal. 17func GetSize(fd int) (int, int, error) { 18 var dimensions [4]uint16 19 _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), uintptr(syscall.TIOCGWINSZ), uintptr(unsafe.Pointer(&dimensions)), 0, 0, 0) 20 if err != 0 { 21 return 0, 0, err 22 } 23 return int(dimensions[1]), int(dimensions[0]), nil 24} 25