vendor: revendor

glide.lock

@@ -1,5 +1,5 @@
-hash: 94ea60e268ee0ed04e8affdee4db2884fd93ee68ed625d88ccc0e24565b98569
-updated: 2017-04-13T11:28:49.008994259-07:00
+hash: e83f57fea75d4a509d812fab12785599fdab16db950cc3738cec59a6c73f93af
+updated: 2017-07-25T13:48:39.899190846-07:00
 imports:
 - name: github.com/beevik/etree
   version: 4cd0dd976db869f817248477718071a28e978df0
@@ -52,8 +52,8 @@ imports:
   subpackages:
   - etreeutils
   - types
-- name: github.com/Sirupsen/logrus
-  version: d26492970760ca5d33129d2d799e34be5c4782eb
+- name: github.com/sirupsen/logrus
+  version: a3f95b5c423586578a4e099b11a46c2479628cac
 - name: github.com/spf13/cobra
   version: bc81c21bd0d8be5ba2d6630a505d79d4467566e7
 - name: github.com/spf13/pflag

vendor/github.com/Sirupsen/logrus/json_formatter.go

@@ -1,41 +0,0 @@
-package logrus
-
-import (
-	"encoding/json"
-	"fmt"
-)
-
-type JSONFormatter struct {
-	// TimestampFormat sets the format used for marshaling timestamps.
-	TimestampFormat string
-}
-
-func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
-	data := make(Fields, len(entry.Data)+3)
-	for k, v := range entry.Data {
-		switch v := v.(type) {
-		case error:
-			// Otherwise errors are ignored by `encoding/json`
-			// https://github.com/Sirupsen/logrus/issues/137
-			data[k] = v.Error()
-		default:
-			data[k] = v
-		}
-	}
-	prefixFieldClashes(data)
-
-	timestampFormat := f.TimestampFormat
-	if timestampFormat == "" {
-		timestampFormat = DefaultTimestampFormat
-	}
-
-	data["time"] = entry.Time.Format(timestampFormat)
-	data["msg"] = entry.Message
-	data["level"] = entry.Level.String()
-
-	serialized, err := json.Marshal(data)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to marshal fields to JSON, %v", err)
-	}
-	return append(serialized, '\n'), nil
-}

vendor/github.com/Sirupsen/logrus/terminal_solaris.go

@@ -1,15 +0,0 @@
-// +build solaris,!appengine
-
-package logrus
-
-import (
-	"os"
-
-	"golang.org/x/sys/unix"
-)
-
-// IsTerminal returns true if the given file descriptor is a terminal.
-func IsTerminal() bool {
-	_, err := unix.IoctlGetTermios(int(os.Stdout.Fd()), unix.TCGETA)
-	return err == nil
-}

vendor/github.com/Sirupsen/logrus/terminal_windows.go

@@ -1,27 +0,0 @@
-// 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 (
-	"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() bool {
-	fd := syscall.Stderr
-	var st uint32
-	r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
-	return r != 0 && e == 0
-}

vendor/github.com/sirupsen/logrus/alt_exit.go

@@ -1,7 +1,7 @@
 package logrus
 
 // The following code was sourced and modified from the
-// https://bitbucket.org/tebeka/atexit package governed by the following license:
+// https://github.com/tebeka/atexit package governed by the following license:
 //
 // Copyright (c) 2012 Miki Tebeka <miki.tebeka@gmail.com>.
 //

vendor/github.com/sirupsen/logrus/doc.go

@@ -7,7 +7,7 @@ The simplest way to use Logrus is simply the package-level exported logger:
   package main
 
   import (
-    log "github.com/Sirupsen/logrus"
+    log "github.com/sirupsen/logrus"
   )
 
   func main() {
@@ -21,6 +21,6 @@ The simplest way to use Logrus is simply the package-level exported logger:
 Output:
   time="2015-09-07T08:48:33Z" level=info msg="A walrus appears" animal=walrus number=1 size=10
 
-For a full guide visit https://github.com/Sirupsen/logrus
+For a full guide visit https://github.com/sirupsen/logrus
 */
 package logrus

vendor/github.com/sirupsen/logrus/entry.go

@@ -126,7 +126,7 @@ func (entry Entry) log(level Level, msg string) {
 }
 
 func (entry *Entry) Debug(args ...interface{}) {
-	if entry.Logger.Level >= DebugLevel {
+	if entry.Logger.level() >= DebugLevel {
 		entry.log(DebugLevel, fmt.Sprint(args...))
 	}
 }
@@ -136,13 +136,13 @@ func (entry *Entry) Print(args ...interface{}) {
 }
 
 func (entry *Entry) Info(args ...interface{}) {
-	if entry.Logger.Level >= InfoLevel {
+	if entry.Logger.level() >= InfoLevel {
 		entry.log(InfoLevel, fmt.Sprint(args...))
 	}
 }
 
 func (entry *Entry) Warn(args ...interface{}) {
-	if entry.Logger.Level >= WarnLevel {
+	if entry.Logger.level() >= WarnLevel {
 		entry.log(WarnLevel, fmt.Sprint(args...))
 	}
 }
@@ -152,20 +152,20 @@ func (entry *Entry) Warning(args ...interface{}) {
 }
 
 func (entry *Entry) Error(args ...interface{}) {
-	if entry.Logger.Level >= ErrorLevel {
+	if entry.Logger.level() >= ErrorLevel {
 		entry.log(ErrorLevel, fmt.Sprint(args...))
 	}
 }
 
 func (entry *Entry) Fatal(args ...interface{}) {
-	if entry.Logger.Level >= FatalLevel {
+	if entry.Logger.level() >= FatalLevel {
 		entry.log(FatalLevel, fmt.Sprint(args...))
 	}
 	Exit(1)
 }
 
 func (entry *Entry) Panic(args ...interface{}) {
-	if entry.Logger.Level >= PanicLevel {
+	if entry.Logger.level() >= PanicLevel {
 		entry.log(PanicLevel, fmt.Sprint(args...))
 	}
 	panic(fmt.Sprint(args...))
@@ -174,13 +174,13 @@ func (entry *Entry) Panic(args ...interface{}) {
 // Entry Printf family functions
 
 func (entry *Entry) Debugf(format string, args ...interface{}) {
-	if entry.Logger.Level >= DebugLevel {
+	if entry.Logger.level() >= DebugLevel {
 		entry.Debug(fmt.Sprintf(format, args...))
 	}
 }
 
 func (entry *Entry) Infof(format string, args ...interface{}) {
-	if entry.Logger.Level >= InfoLevel {
+	if entry.Logger.level() >= InfoLevel {
 		entry.Info(fmt.Sprintf(format, args...))
 	}
 }
@@ -190,7 +190,7 @@ func (entry *Entry) Printf(format string, args ...interface{}) {
 }
 
 func (entry *Entry) Warnf(format string, args ...interface{}) {
-	if entry.Logger.Level >= WarnLevel {
+	if entry.Logger.level() >= WarnLevel {
 		entry.Warn(fmt.Sprintf(format, args...))
 	}
 }
@@ -200,20 +200,20 @@ func (entry *Entry) Warningf(format string, args ...interface{}) {
 }
 
 func (entry *Entry) Errorf(format string, args ...interface{}) {
-	if entry.Logger.Level >= ErrorLevel {
+	if entry.Logger.level() >= ErrorLevel {
 		entry.Error(fmt.Sprintf(format, args...))
 	}
 }
 
 func (entry *Entry) Fatalf(format string, args ...interface{}) {
-	if entry.Logger.Level >= FatalLevel {
+	if entry.Logger.level() >= FatalLevel {
 		entry.Fatal(fmt.Sprintf(format, args...))
 	}
 	Exit(1)
 }
 
 func (entry *Entry) Panicf(format string, args ...interface{}) {
-	if entry.Logger.Level >= PanicLevel {
+	if entry.Logger.level() >= PanicLevel {
 		entry.Panic(fmt.Sprintf(format, args...))
 	}
 }
@@ -221,13 +221,13 @@ func (entry *Entry) Panicf(format string, args ...interface{}) {
 // Entry Println family functions
 
 func (entry *Entry) Debugln(args ...interface{}) {
-	if entry.Logger.Level >= DebugLevel {
+	if entry.Logger.level() >= DebugLevel {
 		entry.Debug(entry.sprintlnn(args...))
 	}
 }
 
 func (entry *Entry) Infoln(args ...interface{}) {
-	if entry.Logger.Level >= InfoLevel {
+	if entry.Logger.level() >= InfoLevel {
 		entry.Info(entry.sprintlnn(args...))
 	}
 }
@@ -237,7 +237,7 @@ func (entry *Entry) Println(args ...interface{}) {
 }
 
 func (entry *Entry) Warnln(args ...interface{}) {
-	if entry.Logger.Level >= WarnLevel {
+	if entry.Logger.level() >= WarnLevel {
 		entry.Warn(entry.sprintlnn(args...))
 	}
 }
@@ -247,20 +247,20 @@ func (entry *Entry) Warningln(args ...interface{}) {
 }
 
 func (entry *Entry) Errorln(args ...interface{}) {
-	if entry.Logger.Level >= ErrorLevel {
+	if entry.Logger.level() >= ErrorLevel {
 		entry.Error(entry.sprintlnn(args...))
 	}
 }
 
 func (entry *Entry) Fatalln(args ...interface{}) {
-	if entry.Logger.Level >= FatalLevel {
+	if entry.Logger.level() >= FatalLevel {
 		entry.Fatal(entry.sprintlnn(args...))
 	}
 	Exit(1)
 }
 
 func (entry *Entry) Panicln(args ...interface{}) {
-	if entry.Logger.Level >= PanicLevel {
+	if entry.Logger.level() >= PanicLevel {
 		entry.Panic(entry.sprintlnn(args...))
 	}
 }

vendor/github.com/sirupsen/logrus/exported.go

@@ -31,14 +31,14 @@ func SetFormatter(formatter Formatter) {
 func SetLevel(level Level) {
 	std.mu.Lock()
 	defer std.mu.Unlock()
-	std.Level = level
+	std.SetLevel(level)
 }
 
 // GetLevel returns the standard logger level.
 func GetLevel() Level {
 	std.mu.Lock()
 	defer std.mu.Unlock()
-	return std.Level
+	return std.level()
 }
 
 // AddHook adds a hook to the standard logger hooks.

vendor/github.com/sirupsen/logrus/json_formatter.go

@@ -0,0 +1,74 @@
+package logrus
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+type fieldKey string
+type FieldMap map[fieldKey]string
+
+const (
+	FieldKeyMsg   = "msg"
+	FieldKeyLevel = "level"
+	FieldKeyTime  = "time"
+)
+
+func (f FieldMap) resolve(key fieldKey) string {
+	if k, ok := f[key]; ok {
+		return k
+	}
+
+	return string(key)
+}
+
+type JSONFormatter struct {
+	// TimestampFormat sets the format used for marshaling timestamps.
+	TimestampFormat string
+
+	// DisableTimestamp allows disabling automatic timestamps in output
+	DisableTimestamp bool
+
+	// FieldMap allows users to customize the names of keys for various fields.
+	// As an example:
+	// formatter := &JSONFormatter{
+	//   	FieldMap: FieldMap{
+	// 		 FieldKeyTime: "@timestamp",
+	// 		 FieldKeyLevel: "@level",
+	// 		 FieldKeyMsg: "@message",
+	//    },
+	// }
+	FieldMap FieldMap
+}
+
+func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
+	data := make(Fields, len(entry.Data)+3)
+	for k, v := range entry.Data {
+		switch v := v.(type) {
+		case error:
+			// Otherwise errors are ignored by `encoding/json`
+			// https://github.com/sirupsen/logrus/issues/137
+			data[k] = v.Error()
+		default:
+			data[k] = v
+		}
+	}
+	prefixFieldClashes(data)
+
+	timestampFormat := f.TimestampFormat
+	if timestampFormat == "" {
+		timestampFormat = DefaultTimestampFormat
+	}
+
+	if !f.DisableTimestamp {
+		data[f.FieldMap.resolve(FieldKeyTime)] = entry.Time.Format(timestampFormat)
+	}
+	data[f.FieldMap.resolve(FieldKeyMsg)] = entry.Message
+	data[f.FieldMap.resolve(FieldKeyLevel)] = entry.Level.String()
+
+	serialized, err := json.Marshal(data)
+	if err != nil {
+		return nil, fmt.Errorf("Failed to marshal fields to JSON, %v", err)
+	}
+	return append(serialized, '\n'), nil
+}

vendor/github.com/sirupsen/logrus/logger.go

@@ -4,6 +4,7 @@ import (
 	"io"
 	"os"
 	"sync"
+	"sync/atomic"
 )
 
 type Logger struct {
@@ -112,7 +113,7 @@ func (logger *Logger) WithError(err error) *Entry {
 }
 
 func (logger *Logger) Debugf(format string, args ...interface{}) {
-	if logger.Level >= DebugLevel {
+	if logger.level() >= DebugLevel {
 		entry := logger.newEntry()
 		entry.Debugf(format, args...)
 		logger.releaseEntry(entry)
@@ -120,7 +121,7 @@ func (logger *Logger) Debugf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Infof(format string, args ...interface{}) {
-	if logger.Level >= InfoLevel {
+	if logger.level() >= InfoLevel {
 		entry := logger.newEntry()
 		entry.Infof(format, args...)
 		logger.releaseEntry(entry)
@@ -134,7 +135,7 @@ func (logger *Logger) Printf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Warnf(format string, args ...interface{}) {
-	if logger.Level >= WarnLevel {
+	if logger.level() >= WarnLevel {
 		entry := logger.newEntry()
 		entry.Warnf(format, args...)
 		logger.releaseEntry(entry)
@@ -142,7 +143,7 @@ func (logger *Logger) Warnf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Warningf(format string, args ...interface{}) {
-	if logger.Level >= WarnLevel {
+	if logger.level() >= WarnLevel {
 		entry := logger.newEntry()
 		entry.Warnf(format, args...)
 		logger.releaseEntry(entry)
@@ -150,7 +151,7 @@ func (logger *Logger) Warningf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Errorf(format string, args ...interface{}) {
-	if logger.Level >= ErrorLevel {
+	if logger.level() >= ErrorLevel {
 		entry := logger.newEntry()
 		entry.Errorf(format, args...)
 		logger.releaseEntry(entry)
@@ -158,7 +159,7 @@ func (logger *Logger) Errorf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Fatalf(format string, args ...interface{}) {
-	if logger.Level >= FatalLevel {
+	if logger.level() >= FatalLevel {
 		entry := logger.newEntry()
 		entry.Fatalf(format, args...)
 		logger.releaseEntry(entry)
@@ -167,7 +168,7 @@ func (logger *Logger) Fatalf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Panicf(format string, args ...interface{}) {
-	if logger.Level >= PanicLevel {
+	if logger.level() >= PanicLevel {
 		entry := logger.newEntry()
 		entry.Panicf(format, args...)
 		logger.releaseEntry(entry)
@@ -175,7 +176,7 @@ func (logger *Logger) Panicf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Debug(args ...interface{}) {
-	if logger.Level >= DebugLevel {
+	if logger.level() >= DebugLevel {
 		entry := logger.newEntry()
 		entry.Debug(args...)
 		logger.releaseEntry(entry)
@@ -183,7 +184,7 @@ func (logger *Logger) Debug(args ...interface{}) {
 }
 
 func (logger *Logger) Info(args ...interface{}) {
-	if logger.Level >= InfoLevel {
+	if logger.level() >= InfoLevel {
 		entry := logger.newEntry()
 		entry.Info(args...)
 		logger.releaseEntry(entry)
@@ -197,7 +198,7 @@ func (logger *Logger) Print(args ...interface{}) {
 }
 
 func (logger *Logger) Warn(args ...interface{}) {
-	if logger.Level >= WarnLevel {
+	if logger.level() >= WarnLevel {
 		entry := logger.newEntry()
 		entry.Warn(args...)
 		logger.releaseEntry(entry)
@@ -205,7 +206,7 @@ func (logger *Logger) Warn(args ...interface{}) {
 }
 
 func (logger *Logger) Warning(args ...interface{}) {
-	if logger.Level >= WarnLevel {
+	if logger.level() >= WarnLevel {
 		entry := logger.newEntry()
 		entry.Warn(args...)
 		logger.releaseEntry(entry)
@@ -213,7 +214,7 @@ func (logger *Logger) Warning(args ...interface{}) {
 }
 
 func (logger *Logger) Error(args ...interface{}) {
-	if logger.Level >= ErrorLevel {
+	if logger.level() >= ErrorLevel {
 		entry := logger.newEntry()
 		entry.Error(args...)
 		logger.releaseEntry(entry)
@@ -221,7 +222,7 @@ func (logger *Logger) Error(args ...interface{}) {
 }
 
 func (logger *Logger) Fatal(args ...interface{}) {
-	if logger.Level >= FatalLevel {
+	if logger.level() >= FatalLevel {
 		entry := logger.newEntry()
 		entry.Fatal(args...)
 		logger.releaseEntry(entry)
@@ -230,7 +231,7 @@ func (logger *Logger) Fatal(args ...interface{}) {
 }
 
 func (logger *Logger) Panic(args ...interface{}) {
-	if logger.Level >= PanicLevel {
+	if logger.level() >= PanicLevel {
 		entry := logger.newEntry()
 		entry.Panic(args...)
 		logger.releaseEntry(entry)
@@ -238,7 +239,7 @@ func (logger *Logger) Panic(args ...interface{}) {
 }
 
 func (logger *Logger) Debugln(args ...interface{}) {
-	if logger.Level >= DebugLevel {
+	if logger.level() >= DebugLevel {
 		entry := logger.newEntry()
 		entry.Debugln(args...)
 		logger.releaseEntry(entry)
@@ -246,7 +247,7 @@ func (logger *Logger) Debugln(args ...interface{}) {
 }
 
 func (logger *Logger) Infoln(args ...interface{}) {
-	if logger.Level >= InfoLevel {
+	if logger.level() >= InfoLevel {
 		entry := logger.newEntry()
 		entry.Infoln(args...)
 		logger.releaseEntry(entry)
@@ -260,7 +261,7 @@ func (logger *Logger) Println(args ...interface{}) {
 }
 
 func (logger *Logger) Warnln(args ...interface{}) {
-	if logger.Level >= WarnLevel {
+	if logger.level() >= WarnLevel {
 		entry := logger.newEntry()
 		entry.Warnln(args...)
 		logger.releaseEntry(entry)
@@ -268,7 +269,7 @@ func (logger *Logger) Warnln(args ...interface{}) {
 }
 
 func (logger *Logger) Warningln(args ...interface{}) {
-	if logger.Level >= WarnLevel {
+	if logger.level() >= WarnLevel {
 		entry := logger.newEntry()
 		entry.Warnln(args...)
 		logger.releaseEntry(entry)
@@ -276,7 +277,7 @@ func (logger *Logger) Warningln(args ...interface{}) {
 }
 
 func (logger *Logger) Errorln(args ...interface{}) {
-	if logger.Level >= ErrorLevel {
+	if logger.level() >= ErrorLevel {
 		entry := logger.newEntry()
 		entry.Errorln(args...)
 		logger.releaseEntry(entry)
@@ -284,7 +285,7 @@ func (logger *Logger) Errorln(args ...interface{}) {
 }
 
 func (logger *Logger) Fatalln(args ...interface{}) {
-	if logger.Level >= FatalLevel {
+	if logger.level() >= FatalLevel {
 		entry := logger.newEntry()
 		entry.Fatalln(args...)
 		logger.releaseEntry(entry)
@@ -293,7 +294,7 @@ func (logger *Logger) Fatalln(args ...interface{}) {
 }
 
 func (logger *Logger) Panicln(args ...interface{}) {
-	if logger.Level >= PanicLevel {
+	if logger.level() >= PanicLevel {
 		entry := logger.newEntry()
 		entry.Panicln(args...)
 		logger.releaseEntry(entry)
@@ -306,3 +307,11 @@ func (logger *Logger) Panicln(args ...interface{}) {
 func (logger *Logger) SetNoLock() {
 	logger.mu.Disable()
 }
+
+func (logger *Logger) level() Level {
+	return Level(atomic.LoadUint32((*uint32)(&logger.Level)))
+}
+
+func (logger *Logger) SetLevel(level Level) {
+	atomic.StoreUint32((*uint32)(&logger.Level), uint32(level))
+}

vendor/github.com/sirupsen/logrus/logrus.go

@@ -10,7 +10,7 @@ import (
 type Fields map[string]interface{}
 
 // Level type
-type Level uint8
+type Level uint32
 
 // Convert the Level to a string. E.g. PanicLevel becomes "panic".
 func (level Level) String() string {

vendor/github.com/sirupsen/logrus/terminal_appengine.go

@@ -2,7 +2,9 @@
 
 package logrus
 
+import "io"
+
 // IsTerminal returns true if stderr's file descriptor is a terminal.
-func IsTerminal() bool {
+func IsTerminal(f io.Writer) bool {
 	return true
 }

vendor/github.com/sirupsen/logrus/terminal_notwindows.go

@@ -9,14 +9,20 @@
 package logrus
 
 import (
+	"io"
+	"os"
 	"syscall"
 	"unsafe"
 )
 
 // IsTerminal returns true if stderr's file descriptor is a terminal.
-func IsTerminal() bool {
-	fd := syscall.Stderr
+func IsTerminal(f io.Writer) bool {
 	var termios Termios
-	_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
-	return err == 0
+	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
+	}
 }

vendor/github.com/sirupsen/logrus/terminal_solaris.go

@@ -0,0 +1,21 @@
+// +build solaris,!appengine
+
+package logrus
+
+import (
+	"io"
+	"os"
+
+	"golang.org/x/sys/unix"
+)
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal(f io.Writer) bool {
+	switch v := f.(type) {
+	case *os.File:
+		_, err := unix.IoctlGetTermios(int(v.Fd()), unix.TCGETA)
+		return err == nil
+	default:
+		return false
+	}
+}

vendor/github.com/sirupsen/logrus/terminal_windows.go

@@ -0,0 +1,82 @@
+// 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 (
+	"bytes"
+	"errors"
+	"io"
+	"os"
+	"os/exec"
+	"strconv"
+	"strings"
+	"syscall"
+	"unsafe"
+)
+
+var kernel32 = syscall.NewLazyDLL("kernel32.dll")
+
+var (
+	procGetConsoleMode = kernel32.NewProc("GetConsoleMode")
+	procSetConsoleMode = kernel32.NewProc("SetConsoleMode")
+)
+
+const (
+	enableProcessedOutput           = 0x0001
+	enableWrapAtEolOutput           = 0x0002
+	enableVirtualTerminalProcessing = 0x0004
+)
+
+func getVersion() (float64, error) {
+	stdout, stderr := &bytes.Buffer{}, &bytes.Buffer{}
+	cmd := exec.Command("cmd", "ver")
+	cmd.Stdout = stdout
+	cmd.Stderr = stderr
+	err := cmd.Run()
+	if err != nil {
+		return -1, err
+	}
+	
+	// The output should be like "Microsoft Windows [Version XX.X.XXXXXX]"
+	version := strings.Replace(stdout.String(), "\n", "", -1)
+	version = strings.Replace(version, "\r\n", "", -1)
+
+	x1 := strings.Index(version, "[Version")
+
+	if x1 == -1 || strings.Index(version, "]") == -1 {
+		return -1, errors.New("Can't determine Windows version")
+	}
+
+	return strconv.ParseFloat(version[x1+9:x1+13], 64)
+}
+
+func init() {
+	ver, err := getVersion()
+	if err != nil {
+		return
+	}
+
+	// Activate Virtual Processing for Windows CMD
+	// Info: https://msdn.microsoft.com/en-us/library/windows/desktop/ms686033(v=vs.85).aspx
+	if ver >= 10 {
+		handle := syscall.Handle(os.Stderr.Fd())
+		procSetConsoleMode.Call(uintptr(handle), enableProcessedOutput|enableWrapAtEolOutput|enableVirtualTerminalProcessing)
+	}
+}
+
+// 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
+	}
+}