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28 lines
670 B
28 lines
670 B
// 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 linux darwin freebsd openbsd netbsd dragonfly |
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// +build !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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// 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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var termios Termios |
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switch v := f.(type) { |
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case *os.File: |
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_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(v.Fd()), ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0) |
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return err == 0 |
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default: |
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return false |
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} |
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}
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