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29 lines
670 B
Go
29 lines
670 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 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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