33 lines
721 B
Go
33 lines
721 B
Go
// Based on ssh/terminal:
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build windows,!appengine
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package logrus
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import (
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"io"
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"os"
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"syscall"
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"unsafe"
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)
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var kernel32 = syscall.NewLazyDLL("kernel32.dll")
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var (
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procGetConsoleMode = kernel32.NewProc("GetConsoleMode")
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)
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// IsTerminal returns true if stderr's file descriptor is a terminal.
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func IsTerminal(f io.Writer) bool {
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switch v := f.(type) {
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case *os.File:
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var st uint32
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r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(v.Fd()), uintptr(unsafe.Pointer(&st)), 0)
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return r != 0 && e == 0
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default:
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return false
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}
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}
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