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- // +build linux darwin freebsd openbsd netbsd dragonfly
- // +build !appengine
- package terminal
- import (
- "io"
- "os"
- "syscall"
- "unsafe"
- )
- // IsTerminal returns true if stderr's file descriptor is a terminal.
- func IsTerminal(f io.Writer) bool {
- var termios Termios
- switch v := f.(type) {
- case *os.File:
- _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(v.Fd()), ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
- return err == 0
- default:
- return false
- }
- }
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