traefik/vendor/github.com/Sirupsen/logrus/terminal_windows.go
Emile Vauge aeb17182b4
Merge v1.2.1-master
Signed-off-by: Emile Vauge <emile@vauge.com>
2017-04-11 22:36:56 +02:00

33 lines
721 B
Go

// Based on ssh/terminal:
// Copyright 2011 The Go 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 windows,!appengine
package logrus
import (
"io"
"os"
"syscall"
"unsafe"
)
var kernel32 = syscall.NewLazyDLL("kernel32.dll")
var (
procGetConsoleMode = kernel32.NewProc("GetConsoleMode")
)
// IsTerminal returns true if stderr's file descriptor is a terminal.
func IsTerminal(f io.Writer) bool {
switch v := f.(type) {
case *os.File:
var st uint32
r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(v.Fd()), uintptr(unsafe.Pointer(&st)), 0)
return r != 0 && e == 0
default:
return false
}
}