bump sirupsen/logrus v1.4.1

Full diff: https://github.com/sirupsen/logrus/compare/v1.3.0...v1.4.1

Fixes:

- Remove dependency on golang.org/x/crypto
- Fix wrong method calls Logger.Print and Logger.Warningln
- Update Entry.Logf to not do string formatting unless the log level is enabled
- Fix infinite recursion on unknown Level.String()
- Fix race condition in getCaller
- Fix Entry.WithContext method to return a copy of the initial entry

New:

- Add DeferExitHandler, similar to RegisterExitHandler but prepending the handler to the list of handlers (semantically like defer)
- Add CallerPrettyfier to JSONFormatter and `TextFormatter`
- Add Entry.WithContext() and Entry.Context, to set a context on entries to be used e.g. in hooks
- Enhance TextFormatter to not print caller information when they are empty

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor.conf

@@ -11,7 +11,7 @@ github.com/Microsoft/opengcs a10967154e143a36014584a6f664344e3bb0aa64
 github.com/konsorten/go-windows-terminal-sequences v1.0.1
 github.com/kr/pty 5cf931ef8f
 github.com/mattn/go-shellwords v1.0.3
-github.com/sirupsen/logrus v1.3.0
+github.com/sirupsen/logrus 8bdbc7bcc01dcbb8ec23dc8a28e332258d25251f # v1.4.1
 github.com/tchap/go-patricia v2.2.6
 github.com/vdemeester/shakers 24d7f1d6a71aa5d9cbe7390e4afb66b7eef9e1b3
 golang.org/x/net a680a1efc54dd51c040b3b5ce4939ea3cf2ea0d1

vendor/github.com/sirupsen/logrus/README.md

@@ -365,6 +365,7 @@ Third party logging formatters:
 * [`logstash`](https://github.com/bshuster-repo/logrus-logstash-hook). Logs fields as [Logstash](http://logstash.net) Events.
 * [`prefixed`](https://github.com/x-cray/logrus-prefixed-formatter). Displays log entry source along with alternative layout.
 * [`zalgo`](https://github.com/aybabtme/logzalgo). Invoking the P͉̫o̳̼̊w̖͈̰͎e̬͔̭͂r͚̼̹̲ ̫͓͉̳͈ō̠͕͖̚f̝͍̠ ͕̲̞͖͑Z̖̫̤̫ͪa͉̬͈̗l͖͎g̳̥o̰̥̅!̣͔̲̻͊̄ ̙̘̦̹̦.
+* [`nested-logrus-formatter`](https://github.com/antonfisher/nested-logrus-formatter). Converts logrus fields to a nested structure.
 
 You can define your formatter by implementing the `Formatter` interface,
 requiring a `Format` method. `Format` takes an `*Entry`. `entry.Data` is a

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

@@ -51,9 +51,9 @@ func Exit(code int) {
 	os.Exit(code)
 }
 
-// RegisterExitHandler adds a Logrus Exit handler, call logrus.Exit to invoke
+// RegisterExitHandler appends a Logrus Exit handler to the list of handlers,
-// all handlers. The handlers will also be invoked when any Fatal log entry is
+// call logrus.Exit to invoke all handlers. The handlers will also be invoked when
-// made.
+// any Fatal log entry is made.
 //
 // This method is useful when a caller wishes to use logrus to log a fatal
 // message but also needs to gracefully shutdown. An example usecase could be
@@ -62,3 +62,15 @@ func Exit(code int) {
 func RegisterExitHandler(handler func()) {
 	handlers = append(handlers, handler)
 }
+
+// DeferExitHandler prepends a Logrus Exit handler to the list of handlers,
+// call logrus.Exit to invoke all handlers. The handlers will also be invoked when
+// any Fatal log entry is made.
+//
+// This method is useful when a caller wishes to use logrus to log a fatal
+// message but also needs to gracefully shutdown. An example usecase could be
+// closing database connections, or sending a alert that the application is
+// closing.
+func DeferExitHandler(handler func()) {
+	handlers = append([]func(){handler}, handlers...)
+}

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

@@ -2,6 +2,7 @@ package logrus
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"os"
 	"reflect"
@@ -69,6 +70,9 @@ type Entry struct {
 	// When formatter is called in entry.log(), a Buffer may be set to entry
 	Buffer *bytes.Buffer
 
+	// Contains the context set by the user. Useful for hook processing etc.
+	Context context.Context
+
 	// err may contain a field formatting error
 	err string
 }
@@ -97,6 +101,11 @@ func (entry *Entry) WithError(err error) *Entry {
 	return entry.WithField(ErrorKey, err)
 }
 
+// Add a context to the Entry.
+func (entry *Entry) WithContext(ctx context.Context) *Entry {
+	return &Entry{Logger: entry.Logger, Data: entry.Data, Time: entry.Time, err: entry.err, Context: ctx}
+}
+
 // Add a single field to the Entry.
 func (entry *Entry) WithField(key string, value interface{}) *Entry {
 	return entry.WithFields(Fields{key: value})
@@ -130,12 +139,12 @@ func (entry *Entry) WithFields(fields Fields) *Entry {
 			data[k] = v
 		}
 	}
-	return &Entry{Logger: entry.Logger, Data: data, Time: entry.Time, err: fieldErr}
+	return &Entry{Logger: entry.Logger, Data: data, Time: entry.Time, err: fieldErr, Context: entry.Context}
 }
 
 // Overrides the time of the Entry.
 func (entry *Entry) WithTime(t time.Time) *Entry {
-	return &Entry{Logger: entry.Logger, Data: entry.Data, Time: t, err: entry.err}
+	return &Entry{Logger: entry.Logger, Data: entry.Data, Time: t, err: entry.err, Context: entry.Context}
 }
 
 // getPackageName reduces a fully qualified function name to the package name
@@ -156,20 +165,23 @@ func getPackageName(f string) string {
 
 // getCaller retrieves the name of the first non-logrus calling function
 func getCaller() *runtime.Frame {
+
+	// cache this package's fully-qualified name
+	callerInitOnce.Do(func() {
+		pcs := make([]uintptr, 2)
+		_ = runtime.Callers(0, pcs)
+		logrusPackage = getPackageName(runtime.FuncForPC(pcs[1]).Name())
+
+		// now that we have the cache, we can skip a minimum count of known-logrus functions
+		// XXX this is dubious, the number of frames may vary
+		minimumCallerDepth = knownLogrusFrames
+	})
+
 	// Restrict the lookback frames to avoid runaway lookups
 	pcs := make([]uintptr, maximumCallerDepth)
 	depth := runtime.Callers(minimumCallerDepth, pcs)
 	frames := runtime.CallersFrames(pcs[:depth])
 
-	// cache this package's fully-qualified name
-	callerInitOnce.Do(func() {
-		logrusPackage = getPackageName(runtime.FuncForPC(pcs[0]).Name())
-
-		// now that we have the cache, we can skip a minimum count of known-logrus functions
-		// XXX this is dubious, the number of frames may vary store an entry in a logger interface
-		minimumCallerDepth = knownLogrusFrames
-	})
-
 	for f, again := frames.Next(); again; f, again = frames.Next() {
 		pkg := getPackageName(f.Function)
 
@@ -298,7 +310,9 @@ func (entry *Entry) Panic(args ...interface{}) {
 // Entry Printf family functions
 
 func (entry *Entry) Logf(level Level, format string, args ...interface{}) {
-	entry.Log(level, fmt.Sprintf(format, args...))
+	if entry.Logger.IsLevelEnabled(level) {
+		entry.Log(level, fmt.Sprintf(format, args...))
+	}
 }
 
 func (entry *Entry) Tracef(format string, args ...interface{}) {

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

@@ -1,6 +1,7 @@
 package logrus
 
 import (
+	"context"
 	"io"
 	"time"
 )
@@ -55,6 +56,11 @@ func WithError(err error) *Entry {
 	return std.WithField(ErrorKey, err)
 }
 
+// WithContext creates an entry from the standard logger and adds a context to it.
+func WithContext(ctx context.Context) *Entry {
+	return std.WithContext(ctx)
+}
+
 // WithField creates an entry from the standard logger and adds a field to
 // it. If you want multiple fields, use `WithFields`.
 //

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

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
+	"runtime"
 )
 
 type fieldKey string
@@ -42,6 +43,12 @@ type JSONFormatter struct {
 	// }
 	FieldMap FieldMap
 
+	// CallerPrettyfier can be set by the user to modify the content
+	// of the function and file keys in the json data when ReportCaller is
+	// activated. If any of the returned value is the empty string the
+	// corresponding key will be removed from json fields.
+	CallerPrettyfier func(*runtime.Frame) (function string, file string)
+
 	// PrettyPrint will indent all json logs
 	PrettyPrint bool
 }
@@ -82,8 +89,17 @@ func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
 	data[f.FieldMap.resolve(FieldKeyMsg)] = entry.Message
 	data[f.FieldMap.resolve(FieldKeyLevel)] = entry.Level.String()
 	if entry.HasCaller() {
-		data[f.FieldMap.resolve(FieldKeyFunc)] = entry.Caller.Function
+		funcVal := entry.Caller.Function
-		data[f.FieldMap.resolve(FieldKeyFile)] = fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
+		fileVal := fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
+		if f.CallerPrettyfier != nil {
+			funcVal, fileVal = f.CallerPrettyfier(entry.Caller)
+		}
+		if funcVal != "" {
+			data[f.FieldMap.resolve(FieldKeyFunc)] = funcVal
+		}
+		if fileVal != "" {
+			data[f.FieldMap.resolve(FieldKeyFile)] = fileVal
+		}
 	}
 
 	var b *bytes.Buffer
@@ -98,7 +114,7 @@ func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
 		encoder.SetIndent("", "  ")
 	}
 	if err := encoder.Encode(data); err != nil {
-		return nil, fmt.Errorf("Failed to marshal fields to JSON, %v", err)
+		return nil, fmt.Errorf("failed to marshal fields to JSON, %v", err)
 	}
 
 	return b.Bytes(), nil

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

@@ -1,6 +1,7 @@
 package logrus
 
 import (
+	"context"
 	"io"
 	"os"
 	"sync"
@@ -124,6 +125,13 @@ func (logger *Logger) WithError(err error) *Entry {
 	return entry.WithError(err)
 }
 
+// Add a context to the log entry.
+func (logger *Logger) WithContext(ctx context.Context) *Entry {
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithContext(ctx)
+}
+
 // Overrides the time of the log entry.
 func (logger *Logger) WithTime(t time.Time) *Entry {
 	entry := logger.newEntry()
@@ -200,7 +208,7 @@ func (logger *Logger) Info(args ...interface{}) {
 
 func (logger *Logger) Print(args ...interface{}) {
 	entry := logger.newEntry()
-	entry.Info(args...)
+	entry.Print(args...)
 	logger.releaseEntry(entry)
 }
 
@@ -256,7 +264,7 @@ func (logger *Logger) Warnln(args ...interface{}) {
 }
 
 func (logger *Logger) Warningln(args ...interface{}) {
-	logger.Warn(args...)
+	logger.Warnln(args...)
 }
 
 func (logger *Logger) Errorln(args ...interface{}) {

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

@@ -74,7 +74,7 @@ func (level Level) MarshalText() ([]byte, error) {
 		return []byte("panic"), nil
 	}
 
-	return nil, fmt.Errorf("not a valid lorus level %q", level)
+	return nil, fmt.Errorf("not a valid logrus level %d", level)
 }
 
 // A constant exposing all logging levels

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

@@ -1,9 +0,0 @@
-// +build !appengine,!js,!windows,aix
-
-package logrus
-
-import "io"
-
-func checkIfTerminal(w io.Writer) bool {
-	return false
-}

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

@@ -0,0 +1,13 @@
+// +build darwin dragonfly freebsd netbsd openbsd
+
+package logrus
+
+import "golang.org/x/sys/unix"
+
+const ioctlReadTermios = unix.TIOCGETA
+
+func isTerminal(fd int) bool {
+	_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
+	return err == nil
+}
+

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

@@ -1,18 +1,16 @@
-// +build !appengine,!js,!windows,!aix
+// +build !appengine,!js,!windows
 
 package logrus
 
 import (
 	"io"
 	"os"
-
-	"golang.org/x/crypto/ssh/terminal"
 )
 
 func checkIfTerminal(w io.Writer) bool {
 	switch v := w.(type) {
 	case *os.File:
-		return terminal.IsTerminal(int(v.Fd()))
+		return isTerminal(int(v.Fd()))
 	default:
 		return false
 	}

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

@@ -0,0 +1,13 @@
+// +build linux aix
+
+package logrus
+
+import "golang.org/x/sys/unix"
+
+const ioctlReadTermios = unix.TCGETS
+
+func isTerminal(fd int) bool {
+	_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
+	return err == nil
+}
+

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

@@ -12,18 +12,13 @@ import (
 )
 
 const (
-	nocolor = 0
+	red    = 31
-	red     = 31
+	yellow = 33
-	green   = 32
+	blue   = 36
-	yellow  = 33
+	gray   = 37
-	blue    = 36
-	gray    = 37
 )
 
-var (
+var baseTimestamp time.Time
-	baseTimestamp time.Time
-	emptyFieldMap FieldMap
-)
 
 func init() {
 	baseTimestamp = time.Now()
@@ -77,6 +72,12 @@ type TextFormatter struct {
 	//         FieldKeyMsg:   "@message"}}
 	FieldMap FieldMap
 
+	// CallerPrettyfier can be set by the user to modify the content
+	// of the function and file keys in the data when ReportCaller is
+	// activated. If any of the returned value is the empty string the
+	// corresponding key will be removed from fields.
+	CallerPrettyfier func(*runtime.Frame) (function string, file string)
+
 	terminalInitOnce sync.Once
 }
 
@@ -118,6 +119,8 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 		keys = append(keys, k)
 	}
 
+	var funcVal, fileVal string
+
 	fixedKeys := make([]string, 0, 4+len(data))
 	if !f.DisableTimestamp {
 		fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyTime))
@@ -130,8 +133,19 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 		fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyLogrusError))
 	}
 	if entry.HasCaller() {
-		fixedKeys = append(fixedKeys,
+		if f.CallerPrettyfier != nil {
-			f.FieldMap.resolve(FieldKeyFunc), f.FieldMap.resolve(FieldKeyFile))
+			funcVal, fileVal = f.CallerPrettyfier(entry.Caller)
+		} else {
+			funcVal = entry.Caller.Function
+			fileVal = fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
+		}
+
+		if funcVal != "" {
+			fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyFunc))
+		}
+		if fileVal != "" {
+			fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyFile))
+		}
 	}
 
 	if !f.DisableSorting {
@@ -166,6 +180,7 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 	if f.isColored() {
 		f.printColored(b, entry, keys, data, timestampFormat)
 	} else {
+
 		for _, key := range fixedKeys {
 			var value interface{}
 			switch {
@@ -178,9 +193,9 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 			case key == f.FieldMap.resolve(FieldKeyLogrusError):
 				value = entry.err
 			case key == f.FieldMap.resolve(FieldKeyFunc) && entry.HasCaller():
-				value = entry.Caller.Function
+				value = funcVal
 			case key == f.FieldMap.resolve(FieldKeyFile) && entry.HasCaller():
-				value = fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
+				value = fileVal
 			default:
 				value = data[key]
 			}
@@ -215,10 +230,21 @@ func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []strin
 	entry.Message = strings.TrimSuffix(entry.Message, "\n")
 
 	caller := ""
-
 	if entry.HasCaller() {
-		caller = fmt.Sprintf("%s:%d %s()",
+		funcVal := fmt.Sprintf("%s()", entry.Caller.Function)
-			entry.Caller.File, entry.Caller.Line, entry.Caller.Function)
+		fileVal := fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
+
+		if f.CallerPrettyfier != nil {
+			funcVal, fileVal = f.CallerPrettyfier(entry.Caller)
+		}
+
+		if fileVal == "" {
+			caller = funcVal
+		} else if funcVal == "" {
+			caller = fileVal
+		} else {
+			caller = fileVal + " " + funcVal
+		}
 	}
 
 	if f.DisableTimestamp {

vendor/golang.org/x/crypto/ssh/terminal/terminal.go

@@ -1,955 +0,0 @@
-// 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.
-
-package terminal
-
-import (
-	"bytes"
-	"io"
-	"sync"
-	"unicode/utf8"
-)
-
-// EscapeCodes contains escape sequences that can be written to the terminal in
-// order to achieve different styles of text.
-type EscapeCodes struct {
-	// Foreground colors
-	Black, Red, Green, Yellow, Blue, Magenta, Cyan, White []byte
-
-	// Reset all attributes
-	Reset []byte
-}
-
-var vt100EscapeCodes = EscapeCodes{
-	Black:   []byte{keyEscape, '[', '3', '0', 'm'},
-	Red:     []byte{keyEscape, '[', '3', '1', 'm'},
-	Green:   []byte{keyEscape, '[', '3', '2', 'm'},
-	Yellow:  []byte{keyEscape, '[', '3', '3', 'm'},
-	Blue:    []byte{keyEscape, '[', '3', '4', 'm'},
-	Magenta: []byte{keyEscape, '[', '3', '5', 'm'},
-	Cyan:    []byte{keyEscape, '[', '3', '6', 'm'},
-	White:   []byte{keyEscape, '[', '3', '7', 'm'},
-
-	Reset: []byte{keyEscape, '[', '0', 'm'},
-}
-
-// Terminal contains the state for running a VT100 terminal that is capable of
-// reading lines of input.
-type Terminal struct {
-	// AutoCompleteCallback, if non-null, is called for each keypress with
-	// the full input line and the current position of the cursor (in
-	// bytes, as an index into |line|). If it returns ok=false, the key
-	// press is processed normally. Otherwise it returns a replacement line
-	// and the new cursor position.
-	AutoCompleteCallback func(line string, pos int, key rune) (newLine string, newPos int, ok bool)
-
-	// Escape contains a pointer to the escape codes for this terminal.
-	// It's always a valid pointer, although the escape codes themselves
-	// may be empty if the terminal doesn't support them.
-	Escape *EscapeCodes
-
-	// lock protects the terminal and the state in this object from
-	// concurrent processing of a key press and a Write() call.
-	lock sync.Mutex
-
-	c      io.ReadWriter
-	prompt []rune
-
-	// line is the current line being entered.
-	line []rune
-	// pos is the logical position of the cursor in line
-	pos int
-	// echo is true if local echo is enabled
-	echo bool
-	// pasteActive is true iff there is a bracketed paste operation in
-	// progress.
-	pasteActive bool
-
-	// cursorX contains the current X value of the cursor where the left
-	// edge is 0. cursorY contains the row number where the first row of
-	// the current line is 0.
-	cursorX, cursorY int
-	// maxLine is the greatest value of cursorY so far.
-	maxLine int
-
-	termWidth, termHeight int
-
-	// outBuf contains the terminal data to be sent.
-	outBuf []byte
-	// remainder contains the remainder of any partial key sequences after
-	// a read. It aliases into inBuf.
-	remainder []byte
-	inBuf     [256]byte
-
-	// history contains previously entered commands so that they can be
-	// accessed with the up and down keys.
-	history stRingBuffer
-	// historyIndex stores the currently accessed history entry, where zero
-	// means the immediately previous entry.
-	historyIndex int
-	// When navigating up and down the history it's possible to return to
-	// the incomplete, initial line. That value is stored in
-	// historyPending.
-	historyPending string
-}
-
-// NewTerminal runs a VT100 terminal on the given ReadWriter. If the ReadWriter is
-// a local terminal, that terminal must first have been put into raw mode.
-// prompt is a string that is written at the start of each input line (i.e.
-// "> ").
-func NewTerminal(c io.ReadWriter, prompt string) *Terminal {
-	return &Terminal{
-		Escape:       &vt100EscapeCodes,
-		c:            c,
-		prompt:       []rune(prompt),
-		termWidth:    80,
-		termHeight:   24,
-		echo:         true,
-		historyIndex: -1,
-	}
-}
-
-const (
-	keyCtrlD     = 4
-	keyCtrlU     = 21
-	keyEnter     = '\r'
-	keyEscape    = 27
-	keyBackspace = 127
-	keyUnknown   = 0xd800 /* UTF-16 surrogate area */ + iota
-	keyUp
-	keyDown
-	keyLeft
-	keyRight
-	keyAltLeft
-	keyAltRight
-	keyHome
-	keyEnd
-	keyDeleteWord
-	keyDeleteLine
-	keyClearScreen
-	keyPasteStart
-	keyPasteEnd
-)
-
-var (
-	crlf       = []byte{'\r', '\n'}
-	pasteStart = []byte{keyEscape, '[', '2', '0', '0', '~'}
-	pasteEnd   = []byte{keyEscape, '[', '2', '0', '1', '~'}
-)
-
-// bytesToKey tries to parse a key sequence from b. If successful, it returns
-// the key and the remainder of the input. Otherwise it returns utf8.RuneError.
-func bytesToKey(b []byte, pasteActive bool) (rune, []byte) {
-	if len(b) == 0 {
-		return utf8.RuneError, nil
-	}
-
-	if !pasteActive {
-		switch b[0] {
-		case 1: // ^A
-			return keyHome, b[1:]
-		case 5: // ^E
-			return keyEnd, b[1:]
-		case 8: // ^H
-			return keyBackspace, b[1:]
-		case 11: // ^K
-			return keyDeleteLine, b[1:]
-		case 12: // ^L
-			return keyClearScreen, b[1:]
-		case 23: // ^W
-			return keyDeleteWord, b[1:]
-		case 14: // ^N
-			return keyDown, b[1:]
-		case 16: // ^P
-			return keyUp, b[1:]
-		}
-	}
-
-	if b[0] != keyEscape {
-		if !utf8.FullRune(b) {
-			return utf8.RuneError, b
-		}
-		r, l := utf8.DecodeRune(b)
-		return r, b[l:]
-	}
-
-	if !pasteActive && len(b) >= 3 && b[0] == keyEscape && b[1] == '[' {
-		switch b[2] {
-		case 'A':
-			return keyUp, b[3:]
-		case 'B':
-			return keyDown, b[3:]
-		case 'C':
-			return keyRight, b[3:]
-		case 'D':
-			return keyLeft, b[3:]
-		case 'H':
-			return keyHome, b[3:]
-		case 'F':
-			return keyEnd, b[3:]
-		}
-	}
-
-	if !pasteActive && len(b) >= 6 && b[0] == keyEscape && b[1] == '[' && b[2] == '1' && b[3] == ';' && b[4] == '3' {
-		switch b[5] {
-		case 'C':
-			return keyAltRight, b[6:]
-		case 'D':
-			return keyAltLeft, b[6:]
-		}
-	}
-
-	if !pasteActive && len(b) >= 6 && bytes.Equal(b[:6], pasteStart) {
-		return keyPasteStart, b[6:]
-	}
-
-	if pasteActive && len(b) >= 6 && bytes.Equal(b[:6], pasteEnd) {
-		return keyPasteEnd, b[6:]
-	}
-
-	// If we get here then we have a key that we don't recognise, or a
-	// partial sequence. It's not clear how one should find the end of a
-	// sequence without knowing them all, but it seems that [a-zA-Z~] only
-	// appears at the end of a sequence.
-	for i, c := range b[0:] {
-		if c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z' || c == '~' {
-			return keyUnknown, b[i+1:]
-		}
-	}
-
-	return utf8.RuneError, b
-}
-
-// queue appends data to the end of t.outBuf
-func (t *Terminal) queue(data []rune) {
-	t.outBuf = append(t.outBuf, []byte(string(data))...)
-}
-
-var eraseUnderCursor = []rune{' ', keyEscape, '[', 'D'}
-var space = []rune{' '}
-
-func isPrintable(key rune) bool {
-	isInSurrogateArea := key >= 0xd800 && key <= 0xdbff
-	return key >= 32 && !isInSurrogateArea
-}
-
-// moveCursorToPos appends data to t.outBuf which will move the cursor to the
-// given, logical position in the text.
-func (t *Terminal) moveCursorToPos(pos int) {
-	if !t.echo {
-		return
-	}
-
-	x := visualLength(t.prompt) + pos
-	y := x / t.termWidth
-	x = x % t.termWidth
-
-	up := 0
-	if y < t.cursorY {
-		up = t.cursorY - y
-	}
-
-	down := 0
-	if y > t.cursorY {
-		down = y - t.cursorY
-	}
-
-	left := 0
-	if x < t.cursorX {
-		left = t.cursorX - x
-	}
-
-	right := 0
-	if x > t.cursorX {
-		right = x - t.cursorX
-	}
-
-	t.cursorX = x
-	t.cursorY = y
-	t.move(up, down, left, right)
-}
-
-func (t *Terminal) move(up, down, left, right int) {
-	movement := make([]rune, 3*(up+down+left+right))
-	m := movement
-	for i := 0; i < up; i++ {
-		m[0] = keyEscape
-		m[1] = '['
-		m[2] = 'A'
-		m = m[3:]
-	}
-	for i := 0; i < down; i++ {
-		m[0] = keyEscape
-		m[1] = '['
-		m[2] = 'B'
-		m = m[3:]
-	}
-	for i := 0; i < left; i++ {
-		m[0] = keyEscape
-		m[1] = '['
-		m[2] = 'D'
-		m = m[3:]
-	}
-	for i := 0; i < right; i++ {
-		m[0] = keyEscape
-		m[1] = '['
-		m[2] = 'C'
-		m = m[3:]
-	}
-
-	t.queue(movement)
-}
-
-func (t *Terminal) clearLineToRight() {
-	op := []rune{keyEscape, '[', 'K'}
-	t.queue(op)
-}
-
-const maxLineLength = 4096
-
-func (t *Terminal) setLine(newLine []rune, newPos int) {
-	if t.echo {
-		t.moveCursorToPos(0)
-		t.writeLine(newLine)
-		for i := len(newLine); i < len(t.line); i++ {
-			t.writeLine(space)
-		}
-		t.moveCursorToPos(newPos)
-	}
-	t.line = newLine
-	t.pos = newPos
-}
-
-func (t *Terminal) advanceCursor(places int) {
-	t.cursorX += places
-	t.cursorY += t.cursorX / t.termWidth
-	if t.cursorY > t.maxLine {
-		t.maxLine = t.cursorY
-	}
-	t.cursorX = t.cursorX % t.termWidth
-
-	if places > 0 && t.cursorX == 0 {
-		// Normally terminals will advance the current position
-		// when writing a character. But that doesn't happen
-		// for the last character in a line. However, when
-		// writing a character (except a new line) that causes
-		// a line wrap, the position will be advanced two
-		// places.
-		//
-		// So, if we are stopping at the end of a line, we
-		// need to write a newline so that our cursor can be
-		// advanced to the next line.
-		t.outBuf = append(t.outBuf, '\r', '\n')
-	}
-}
-
-func (t *Terminal) eraseNPreviousChars(n int) {
-	if n == 0 {
-		return
-	}
-
-	if t.pos < n {
-		n = t.pos
-	}
-	t.pos -= n
-	t.moveCursorToPos(t.pos)
-
-	copy(t.line[t.pos:], t.line[n+t.pos:])
-	t.line = t.line[:len(t.line)-n]
-	if t.echo {
-		t.writeLine(t.line[t.pos:])
-		for i := 0; i < n; i++ {
-			t.queue(space)
-		}
-		t.advanceCursor(n)
-		t.moveCursorToPos(t.pos)
-	}
-}
-
-// countToLeftWord returns then number of characters from the cursor to the
-// start of the previous word.
-func (t *Terminal) countToLeftWord() int {
-	if t.pos == 0 {
-		return 0
-	}
-
-	pos := t.pos - 1
-	for pos > 0 {
-		if t.line[pos] != ' ' {
-			break
-		}
-		pos--
-	}
-	for pos > 0 {
-		if t.line[pos] == ' ' {
-			pos++
-			break
-		}
-		pos--
-	}
-
-	return t.pos - pos
-}
-
-// countToRightWord returns then number of characters from the cursor to the
-// start of the next word.
-func (t *Terminal) countToRightWord() int {
-	pos := t.pos
-	for pos < len(t.line) {
-		if t.line[pos] == ' ' {
-			break
-		}
-		pos++
-	}
-	for pos < len(t.line) {
-		if t.line[pos] != ' ' {
-			break
-		}
-		pos++
-	}
-	return pos - t.pos
-}
-
-// visualLength returns the number of visible glyphs in s.
-func visualLength(runes []rune) int {
-	inEscapeSeq := false
-	length := 0
-
-	for _, r := range runes {
-		switch {
-		case inEscapeSeq:
-			if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') {
-				inEscapeSeq = false
-			}
-		case r == '\x1b':
-			inEscapeSeq = true
-		default:
-			length++
-		}
-	}
-
-	return length
-}
-
-// handleKey processes the given key and, optionally, returns a line of text
-// that the user has entered.
-func (t *Terminal) handleKey(key rune) (line string, ok bool) {
-	if t.pasteActive && key != keyEnter {
-		t.addKeyToLine(key)
-		return
-	}
-
-	switch key {
-	case keyBackspace:
-		if t.pos == 0 {
-			return
-		}
-		t.eraseNPreviousChars(1)
-	case keyAltLeft:
-		// move left by a word.
-		t.pos -= t.countToLeftWord()
-		t.moveCursorToPos(t.pos)
-	case keyAltRight:
-		// move right by a word.
-		t.pos += t.countToRightWord()
-		t.moveCursorToPos(t.pos)
-	case keyLeft:
-		if t.pos == 0 {
-			return
-		}
-		t.pos--
-		t.moveCursorToPos(t.pos)
-	case keyRight:
-		if t.pos == len(t.line) {
-			return
-		}
-		t.pos++
-		t.moveCursorToPos(t.pos)
-	case keyHome:
-		if t.pos == 0 {
-			return
-		}
-		t.pos = 0
-		t.moveCursorToPos(t.pos)
-	case keyEnd:
-		if t.pos == len(t.line) {
-			return
-		}
-		t.pos = len(t.line)
-		t.moveCursorToPos(t.pos)
-	case keyUp:
-		entry, ok := t.history.NthPreviousEntry(t.historyIndex + 1)
-		if !ok {
-			return "", false
-		}
-		if t.historyIndex == -1 {
-			t.historyPending = string(t.line)
-		}
-		t.historyIndex++
-		runes := []rune(entry)
-		t.setLine(runes, len(runes))
-	case keyDown:
-		switch t.historyIndex {
-		case -1:
-			return
-		case 0:
-			runes := []rune(t.historyPending)
-			t.setLine(runes, len(runes))
-			t.historyIndex--
-		default:
-			entry, ok := t.history.NthPreviousEntry(t.historyIndex - 1)
-			if ok {
-				t.historyIndex--
-				runes := []rune(entry)
-				t.setLine(runes, len(runes))
-			}
-		}
-	case keyEnter:
-		t.moveCursorToPos(len(t.line))
-		t.queue([]rune("\r\n"))
-		line = string(t.line)
-		ok = true
-		t.line = t.line[:0]
-		t.pos = 0
-		t.cursorX = 0
-		t.cursorY = 0
-		t.maxLine = 0
-	case keyDeleteWord:
-		// Delete zero or more spaces and then one or more characters.
-		t.eraseNPreviousChars(t.countToLeftWord())
-	case keyDeleteLine:
-		// Delete everything from the current cursor position to the
-		// end of line.
-		for i := t.pos; i < len(t.line); i++ {
-			t.queue(space)
-			t.advanceCursor(1)
-		}
-		t.line = t.line[:t.pos]
-		t.moveCursorToPos(t.pos)
-	case keyCtrlD:
-		// Erase the character under the current position.
-		// The EOF case when the line is empty is handled in
-		// readLine().
-		if t.pos < len(t.line) {
-			t.pos++
-			t.eraseNPreviousChars(1)
-		}
-	case keyCtrlU:
-		t.eraseNPreviousChars(t.pos)
-	case keyClearScreen:
-		// Erases the screen and moves the cursor to the home position.
-		t.queue([]rune("\x1b[2J\x1b[H"))
-		t.queue(t.prompt)
-		t.cursorX, t.cursorY = 0, 0
-		t.advanceCursor(visualLength(t.prompt))
-		t.setLine(t.line, t.pos)
-	default:
-		if t.AutoCompleteCallback != nil {
-			prefix := string(t.line[:t.pos])
-			suffix := string(t.line[t.pos:])
-
-			t.lock.Unlock()
-			newLine, newPos, completeOk := t.AutoCompleteCallback(prefix+suffix, len(prefix), key)
-			t.lock.Lock()
-
-			if completeOk {
-				t.setLine([]rune(newLine), utf8.RuneCount([]byte(newLine)[:newPos]))
-				return
-			}
-		}
-		if !isPrintable(key) {
-			return
-		}
-		if len(t.line) == maxLineLength {
-			return
-		}
-		t.addKeyToLine(key)
-	}
-	return
-}
-
-// addKeyToLine inserts the given key at the current position in the current
-// line.
-func (t *Terminal) addKeyToLine(key rune) {
-	if len(t.line) == cap(t.line) {
-		newLine := make([]rune, len(t.line), 2*(1+len(t.line)))
-		copy(newLine, t.line)
-		t.line = newLine
-	}
-	t.line = t.line[:len(t.line)+1]
-	copy(t.line[t.pos+1:], t.line[t.pos:])
-	t.line[t.pos] = key
-	if t.echo {
-		t.writeLine(t.line[t.pos:])
-	}
-	t.pos++
-	t.moveCursorToPos(t.pos)
-}
-
-func (t *Terminal) writeLine(line []rune) {
-	for len(line) != 0 {
-		remainingOnLine := t.termWidth - t.cursorX
-		todo := len(line)
-		if todo > remainingOnLine {
-			todo = remainingOnLine
-		}
-		t.queue(line[:todo])
-		t.advanceCursor(visualLength(line[:todo]))
-		line = line[todo:]
-	}
-}
-
-// writeWithCRLF writes buf to w but replaces all occurrences of \n with \r\n.
-func writeWithCRLF(w io.Writer, buf []byte) (n int, err error) {
-	for len(buf) > 0 {
-		i := bytes.IndexByte(buf, '\n')
-		todo := len(buf)
-		if i >= 0 {
-			todo = i
-		}
-
-		var nn int
-		nn, err = w.Write(buf[:todo])
-		n += nn
-		if err != nil {
-			return n, err
-		}
-		buf = buf[todo:]
-
-		if i >= 0 {
-			if _, err = w.Write(crlf); err != nil {
-				return n, err
-			}
-			n++
-			buf = buf[1:]
-		}
-	}
-
-	return n, nil
-}
-
-func (t *Terminal) Write(buf []byte) (n int, err error) {
-	t.lock.Lock()
-	defer t.lock.Unlock()
-
-	if t.cursorX == 0 && t.cursorY == 0 {
-		// This is the easy case: there's nothing on the screen that we
-		// have to move out of the way.
-		return writeWithCRLF(t.c, buf)
-	}
-
-	// We have a prompt and possibly user input on the screen. We
-	// have to clear it first.
-	t.move(0 /* up */, 0 /* down */, t.cursorX /* left */, 0 /* right */)
-	t.cursorX = 0
-	t.clearLineToRight()
-
-	for t.cursorY > 0 {
-		t.move(1 /* up */, 0, 0, 0)
-		t.cursorY--
-		t.clearLineToRight()
-	}
-
-	if _, err = t.c.Write(t.outBuf); err != nil {
-		return
-	}
-	t.outBuf = t.outBuf[:0]
-
-	if n, err = writeWithCRLF(t.c, buf); err != nil {
-		return
-	}
-
-	t.writeLine(t.prompt)
-	if t.echo {
-		t.writeLine(t.line)
-	}
-
-	t.moveCursorToPos(t.pos)
-
-	if _, err = t.c.Write(t.outBuf); err != nil {
-		return
-	}
-	t.outBuf = t.outBuf[:0]
-	return
-}
-
-// ReadPassword temporarily changes the prompt and reads a password, without
-// echo, from the terminal.
-func (t *Terminal) ReadPassword(prompt string) (line string, err error) {
-	t.lock.Lock()
-	defer t.lock.Unlock()
-
-	oldPrompt := t.prompt
-	t.prompt = []rune(prompt)
-	t.echo = false
-
-	line, err = t.readLine()
-
-	t.prompt = oldPrompt
-	t.echo = true
-
-	return
-}
-
-// ReadLine returns a line of input from the terminal.
-func (t *Terminal) ReadLine() (line string, err error) {
-	t.lock.Lock()
-	defer t.lock.Unlock()
-
-	return t.readLine()
-}
-
-func (t *Terminal) readLine() (line string, err error) {
-	// t.lock must be held at this point
-
-	if t.cursorX == 0 && t.cursorY == 0 {
-		t.writeLine(t.prompt)
-		t.c.Write(t.outBuf)
-		t.outBuf = t.outBuf[:0]
-	}
-
-	lineIsPasted := t.pasteActive
-
-	for {
-		rest := t.remainder
-		lineOk := false
-		for !lineOk {
-			var key rune
-			key, rest = bytesToKey(rest, t.pasteActive)
-			if key == utf8.RuneError {
-				break
-			}
-			if !t.pasteActive {
-				if key == keyCtrlD {
-					if len(t.line) == 0 {
-						return "", io.EOF
-					}
-				}
-				if key == keyPasteStart {
-					t.pasteActive = true
-					if len(t.line) == 0 {
-						lineIsPasted = true
-					}
-					continue
-				}
-			} else if key == keyPasteEnd {
-				t.pasteActive = false
-				continue
-			}
-			if !t.pasteActive {
-				lineIsPasted = false
-			}
-			line, lineOk = t.handleKey(key)
-		}
-		if len(rest) > 0 {
-			n := copy(t.inBuf[:], rest)
-			t.remainder = t.inBuf[:n]
-		} else {
-			t.remainder = nil
-		}
-		t.c.Write(t.outBuf)
-		t.outBuf = t.outBuf[:0]
-		if lineOk {
-			if t.echo {
-				t.historyIndex = -1
-				t.history.Add(line)
-			}
-			if lineIsPasted {
-				err = ErrPasteIndicator
-			}
-			return
-		}
-
-		// t.remainder is a slice at the beginning of t.inBuf
-		// containing a partial key sequence
-		readBuf := t.inBuf[len(t.remainder):]
-		var n int
-
-		t.lock.Unlock()
-		n, err = t.c.Read(readBuf)
-		t.lock.Lock()
-
-		if err != nil {
-			return
-		}
-
-		t.remainder = t.inBuf[:n+len(t.remainder)]
-	}
-}
-
-// SetPrompt sets the prompt to be used when reading subsequent lines.
-func (t *Terminal) SetPrompt(prompt string) {
-	t.lock.Lock()
-	defer t.lock.Unlock()
-
-	t.prompt = []rune(prompt)
-}
-
-func (t *Terminal) clearAndRepaintLinePlusNPrevious(numPrevLines int) {
-	// Move cursor to column zero at the start of the line.
-	t.move(t.cursorY, 0, t.cursorX, 0)
-	t.cursorX, t.cursorY = 0, 0
-	t.clearLineToRight()
-	for t.cursorY < numPrevLines {
-		// Move down a line
-		t.move(0, 1, 0, 0)
-		t.cursorY++
-		t.clearLineToRight()
-	}
-	// Move back to beginning.
-	t.move(t.cursorY, 0, 0, 0)
-	t.cursorX, t.cursorY = 0, 0
-
-	t.queue(t.prompt)
-	t.advanceCursor(visualLength(t.prompt))
-	t.writeLine(t.line)
-	t.moveCursorToPos(t.pos)
-}
-
-func (t *Terminal) SetSize(width, height int) error {
-	t.lock.Lock()
-	defer t.lock.Unlock()
-
-	if width == 0 {
-		width = 1
-	}
-
-	oldWidth := t.termWidth
-	t.termWidth, t.termHeight = width, height
-
-	switch {
-	case width == oldWidth:
-		// If the width didn't change then nothing else needs to be
-		// done.
-		return nil
-	case len(t.line) == 0 && t.cursorX == 0 && t.cursorY == 0:
-		// If there is nothing on current line and no prompt printed,
-		// just do nothing
-		return nil
-	case width < oldWidth:
-		// Some terminals (e.g. xterm) will truncate lines that were
-		// too long when shinking. Others, (e.g. gnome-terminal) will
-		// attempt to wrap them. For the former, repainting t.maxLine
-		// works great, but that behaviour goes badly wrong in the case
-		// of the latter because they have doubled every full line.
-
-		// We assume that we are working on a terminal that wraps lines
-		// and adjust the cursor position based on every previous line
-		// wrapping and turning into two. This causes the prompt on
-		// xterms to move upwards, which isn't great, but it avoids a
-		// huge mess with gnome-terminal.
-		if t.cursorX >= t.termWidth {
-			t.cursorX = t.termWidth - 1
-		}
-		t.cursorY *= 2
-		t.clearAndRepaintLinePlusNPrevious(t.maxLine * 2)
-	case width > oldWidth:
-		// If the terminal expands then our position calculations will
-		// be wrong in the future because we think the cursor is
-		// |t.pos| chars into the string, but there will be a gap at
-		// the end of any wrapped line.
-		//
-		// But the position will actually be correct until we move, so
-		// we can move back to the beginning and repaint everything.
-		t.clearAndRepaintLinePlusNPrevious(t.maxLine)
-	}
-
-	_, err := t.c.Write(t.outBuf)
-	t.outBuf = t.outBuf[:0]
-	return err
-}
-
-type pasteIndicatorError struct{}
-
-func (pasteIndicatorError) Error() string {
-	return "terminal: ErrPasteIndicator not correctly handled"
-}
-
-// ErrPasteIndicator may be returned from ReadLine as the error, in addition
-// to valid line data. It indicates that bracketed paste mode is enabled and
-// that the returned line consists only of pasted data. Programs may wish to
-// interpret pasted data more literally than typed data.
-var ErrPasteIndicator = pasteIndicatorError{}
-
-// SetBracketedPasteMode requests that the terminal bracket paste operations
-// with markers. Not all terminals support this but, if it is supported, then
-// enabling this mode will stop any autocomplete callback from running due to
-// pastes. Additionally, any lines that are completely pasted will be returned
-// from ReadLine with the error set to ErrPasteIndicator.
-func (t *Terminal) SetBracketedPasteMode(on bool) {
-	if on {
-		io.WriteString(t.c, "\x1b[?2004h")
-	} else {
-		io.WriteString(t.c, "\x1b[?2004l")
-	}
-}
-
-// stRingBuffer is a ring buffer of strings.
-type stRingBuffer struct {
-	// entries contains max elements.
-	entries []string
-	max     int
-	// head contains the index of the element most recently added to the ring.
-	head int
-	// size contains the number of elements in the ring.
-	size int
-}
-
-func (s *stRingBuffer) Add(a string) {
-	if s.entries == nil {
-		const defaultNumEntries = 100
-		s.entries = make([]string, defaultNumEntries)
-		s.max = defaultNumEntries
-	}
-
-	s.head = (s.head + 1) % s.max
-	s.entries[s.head] = a
-	if s.size < s.max {
-		s.size++
-	}
-}
-
-// NthPreviousEntry returns the value passed to the nth previous call to Add.
-// If n is zero then the immediately prior value is returned, if one, then the
-// next most recent, and so on. If such an element doesn't exist then ok is
-// false.
-func (s *stRingBuffer) NthPreviousEntry(n int) (value string, ok bool) {
-	if n >= s.size {
-		return "", false
-	}
-	index := s.head - n
-	if index < 0 {
-		index += s.max
-	}
-	return s.entries[index], true
-}
-
-// readPasswordLine reads from reader until it finds \n or io.EOF.
-// The slice returned does not include the \n.
-// readPasswordLine also ignores any \r it finds.
-func readPasswordLine(reader io.Reader) ([]byte, error) {
-	var buf [1]byte
-	var ret []byte
-
-	for {
-		n, err := reader.Read(buf[:])
-		if n > 0 {
-			switch buf[0] {
-			case '\n':
-				return ret, nil
-			case '\r':
-				// remove \r from passwords on Windows
-			default:
-				ret = append(ret, buf[0])
-			}
-			continue
-		}
-		if err != nil {
-			if err == io.EOF && len(ret) > 0 {
-				return ret, nil
-			}
-			return ret, err
-		}
-	}
-}

vendor/golang.org/x/crypto/ssh/terminal/util.go

@@ -1,114 +0,0 @@
-// 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 aix darwin dragonfly freebsd linux,!appengine netbsd openbsd
-
-// Package terminal provides support functions for dealing with terminals, as
-// commonly found on UNIX systems.
-//
-// Putting a terminal into raw mode is the most common requirement:
-//
-// 	oldState, err := terminal.MakeRaw(0)
-// 	if err != nil {
-// 	        panic(err)
-// 	}
-// 	defer terminal.Restore(0, oldState)
-package terminal // import "golang.org/x/crypto/ssh/terminal"
-
-import (
-	"golang.org/x/sys/unix"
-)
-
-// State contains the state of a terminal.
-type State struct {
-	termios unix.Termios
-}
-
-// IsTerminal returns whether the given file descriptor is a terminal.
-func IsTerminal(fd int) bool {
-	_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
-	return err == nil
-}
-
-// MakeRaw put the terminal connected to the given file descriptor into raw
-// mode and returns the previous state of the terminal so that it can be
-// restored.
-func MakeRaw(fd int) (*State, error) {
-	termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
-	if err != nil {
-		return nil, err
-	}
-
-	oldState := State{termios: *termios}
-
-	// This attempts to replicate the behaviour documented for cfmakeraw in
-	// the termios(3) manpage.
-	termios.Iflag &^= unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON
-	termios.Oflag &^= unix.OPOST
-	termios.Lflag &^= unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN
-	termios.Cflag &^= unix.CSIZE | unix.PARENB
-	termios.Cflag |= unix.CS8
-	termios.Cc[unix.VMIN] = 1
-	termios.Cc[unix.VTIME] = 0
-	if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, termios); err != nil {
-		return nil, err
-	}
-
-	return &oldState, nil
-}
-
-// GetState returns the current state of a terminal which may be useful to
-// restore the terminal after a signal.
-func GetState(fd int) (*State, error) {
-	termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
-	if err != nil {
-		return nil, err
-	}
-
-	return &State{termios: *termios}, nil
-}
-
-// Restore restores the terminal connected to the given file descriptor to a
-// previous state.
-func Restore(fd int, state *State) error {
-	return unix.IoctlSetTermios(fd, ioctlWriteTermios, &state.termios)
-}
-
-// GetSize returns the dimensions of the given terminal.
-func GetSize(fd int) (width, height int, err error) {
-	ws, err := unix.IoctlGetWinsize(fd, unix.TIOCGWINSZ)
-	if err != nil {
-		return -1, -1, err
-	}
-	return int(ws.Col), int(ws.Row), nil
-}
-
-// passwordReader is an io.Reader that reads from a specific file descriptor.
-type passwordReader int
-
-func (r passwordReader) Read(buf []byte) (int, error) {
-	return unix.Read(int(r), buf)
-}
-
-// ReadPassword reads a line of input from a terminal without local echo.  This
-// is commonly used for inputting passwords and other sensitive data. The slice
-// returned does not include the \n.
-func ReadPassword(fd int) ([]byte, error) {
-	termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
-	if err != nil {
-		return nil, err
-	}
-
-	newState := *termios
-	newState.Lflag &^= unix.ECHO
-	newState.Lflag |= unix.ICANON | unix.ISIG
-	newState.Iflag |= unix.ICRNL
-	if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, &newState); err != nil {
-		return nil, err
-	}
-
-	defer unix.IoctlSetTermios(fd, ioctlWriteTermios, termios)
-
-	return readPasswordLine(passwordReader(fd))
-}

vendor/golang.org/x/crypto/ssh/terminal/util_aix.go

@@ -1,12 +0,0 @@
-// Copyright 2018 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 aix
-
-package terminal
-
-import "golang.org/x/sys/unix"
-
-const ioctlReadTermios = unix.TCGETS
-const ioctlWriteTermios = unix.TCSETS

vendor/golang.org/x/crypto/ssh/terminal/util_bsd.go

@@ -1,12 +0,0 @@
-// Copyright 2013 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 darwin dragonfly freebsd netbsd openbsd
-
-package terminal
-
-import "golang.org/x/sys/unix"
-
-const ioctlReadTermios = unix.TIOCGETA
-const ioctlWriteTermios = unix.TIOCSETA

vendor/golang.org/x/crypto/ssh/terminal/util_linux.go

@@ -1,10 +0,0 @@
-// Copyright 2013 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.
-
-package terminal
-
-import "golang.org/x/sys/unix"
-
-const ioctlReadTermios = unix.TCGETS
-const ioctlWriteTermios = unix.TCSETS

vendor/golang.org/x/crypto/ssh/terminal/util_plan9.go

@@ -1,58 +0,0 @@
-// Copyright 2016 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.
-
-// Package terminal provides support functions for dealing with terminals, as
-// commonly found on UNIX systems.
-//
-// Putting a terminal into raw mode is the most common requirement:
-//
-// 	oldState, err := terminal.MakeRaw(0)
-// 	if err != nil {
-// 	        panic(err)
-// 	}
-// 	defer terminal.Restore(0, oldState)
-package terminal
-
-import (
-	"fmt"
-	"runtime"
-)
-
-type State struct{}
-
-// IsTerminal returns whether the given file descriptor is a terminal.
-func IsTerminal(fd int) bool {
-	return false
-}
-
-// MakeRaw put the terminal connected to the given file descriptor into raw
-// mode and returns the previous state of the terminal so that it can be
-// restored.
-func MakeRaw(fd int) (*State, error) {
-	return nil, fmt.Errorf("terminal: MakeRaw not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
-}
-
-// GetState returns the current state of a terminal which may be useful to
-// restore the terminal after a signal.
-func GetState(fd int) (*State, error) {
-	return nil, fmt.Errorf("terminal: GetState not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
-}
-
-// Restore restores the terminal connected to the given file descriptor to a
-// previous state.
-func Restore(fd int, state *State) error {
-	return fmt.Errorf("terminal: Restore not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
-}
-
-// GetSize returns the dimensions of the given terminal.
-func GetSize(fd int) (width, height int, err error) {
-	return 0, 0, fmt.Errorf("terminal: GetSize not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
-}
-
-// ReadPassword reads a line of input from a terminal without local echo.  This
-// is commonly used for inputting passwords and other sensitive data. The slice
-// returned does not include the \n.
-func ReadPassword(fd int) ([]byte, error) {
-	return nil, fmt.Errorf("terminal: ReadPassword not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
-}

vendor/golang.org/x/crypto/ssh/terminal/util_solaris.go

@@ -1,124 +0,0 @@
-// Copyright 2015 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 solaris
-
-package terminal // import "golang.org/x/crypto/ssh/terminal"
-
-import (
-	"golang.org/x/sys/unix"
-	"io"
-	"syscall"
-)
-
-// State contains the state of a terminal.
-type State struct {
-	termios unix.Termios
-}
-
-// IsTerminal returns whether the given file descriptor is a terminal.
-func IsTerminal(fd int) bool {
-	_, err := unix.IoctlGetTermio(fd, unix.TCGETA)
-	return err == nil
-}
-
-// ReadPassword reads a line of input from a terminal without local echo.  This
-// is commonly used for inputting passwords and other sensitive data. The slice
-// returned does not include the \n.
-func ReadPassword(fd int) ([]byte, error) {
-	// see also: http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libast/common/uwin/getpass.c
-	val, err := unix.IoctlGetTermios(fd, unix.TCGETS)
-	if err != nil {
-		return nil, err
-	}
-	oldState := *val
-
-	newState := oldState
-	newState.Lflag &^= syscall.ECHO
-	newState.Lflag |= syscall.ICANON | syscall.ISIG
-	newState.Iflag |= syscall.ICRNL
-	err = unix.IoctlSetTermios(fd, unix.TCSETS, &newState)
-	if err != nil {
-		return nil, err
-	}
-
-	defer unix.IoctlSetTermios(fd, unix.TCSETS, &oldState)
-
-	var buf [16]byte
-	var ret []byte
-	for {
-		n, err := syscall.Read(fd, buf[:])
-		if err != nil {
-			return nil, err
-		}
-		if n == 0 {
-			if len(ret) == 0 {
-				return nil, io.EOF
-			}
-			break
-		}
-		if buf[n-1] == '\n' {
-			n--
-		}
-		ret = append(ret, buf[:n]...)
-		if n < len(buf) {
-			break
-		}
-	}
-
-	return ret, nil
-}
-
-// MakeRaw puts the terminal connected to the given file descriptor into raw
-// mode and returns the previous state of the terminal so that it can be
-// restored.
-// see http://cr.illumos.org/~webrev/andy_js/1060/
-func MakeRaw(fd int) (*State, error) {
-	termios, err := unix.IoctlGetTermios(fd, unix.TCGETS)
-	if err != nil {
-		return nil, err
-	}
-
-	oldState := State{termios: *termios}
-
-	termios.Iflag &^= unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON
-	termios.Oflag &^= unix.OPOST
-	termios.Lflag &^= unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN
-	termios.Cflag &^= unix.CSIZE | unix.PARENB
-	termios.Cflag |= unix.CS8
-	termios.Cc[unix.VMIN] = 1
-	termios.Cc[unix.VTIME] = 0
-
-	if err := unix.IoctlSetTermios(fd, unix.TCSETS, termios); err != nil {
-		return nil, err
-	}
-
-	return &oldState, nil
-}
-
-// Restore restores the terminal connected to the given file descriptor to a
-// previous state.
-func Restore(fd int, oldState *State) error {
-	return unix.IoctlSetTermios(fd, unix.TCSETS, &oldState.termios)
-}
-
-// GetState returns the current state of a terminal which may be useful to
-// restore the terminal after a signal.
-func GetState(fd int) (*State, error) {
-	termios, err := unix.IoctlGetTermios(fd, unix.TCGETS)
-	if err != nil {
-		return nil, err
-	}
-
-	return &State{termios: *termios}, nil
-}
-
-// GetSize returns the dimensions of the given terminal.
-func GetSize(fd int) (width, height int, err error) {
-	ws, err := unix.IoctlGetWinsize(fd, unix.TIOCGWINSZ)
-	if err != nil {
-		return 0, 0, err
-	}
-	return int(ws.Col), int(ws.Row), nil
-}

vendor/golang.org/x/crypto/ssh/terminal/util_windows.go

@@ -1,105 +0,0 @@
-// 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
-
-// Package terminal provides support functions for dealing with terminals, as
-// commonly found on UNIX systems.
-//
-// Putting a terminal into raw mode is the most common requirement:
-//
-// 	oldState, err := terminal.MakeRaw(0)
-// 	if err != nil {
-// 	        panic(err)
-// 	}
-// 	defer terminal.Restore(0, oldState)
-package terminal
-
-import (
-	"os"
-
-	"golang.org/x/sys/windows"
-)
-
-type State struct {
-	mode uint32
-}
-
-// IsTerminal returns whether the given file descriptor is a terminal.
-func IsTerminal(fd int) bool {
-	var st uint32
-	err := windows.GetConsoleMode(windows.Handle(fd), &st)
-	return err == nil
-}
-
-// MakeRaw put the terminal connected to the given file descriptor into raw
-// mode and returns the previous state of the terminal so that it can be
-// restored.
-func MakeRaw(fd int) (*State, error) {
-	var st uint32
-	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
-		return nil, err
-	}
-	raw := st &^ (windows.ENABLE_ECHO_INPUT | windows.ENABLE_PROCESSED_INPUT | windows.ENABLE_LINE_INPUT | windows.ENABLE_PROCESSED_OUTPUT)
-	if err := windows.SetConsoleMode(windows.Handle(fd), raw); err != nil {
-		return nil, err
-	}
-	return &State{st}, nil
-}
-
-// GetState returns the current state of a terminal which may be useful to
-// restore the terminal after a signal.
-func GetState(fd int) (*State, error) {
-	var st uint32
-	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
-		return nil, err
-	}
-	return &State{st}, nil
-}
-
-// Restore restores the terminal connected to the given file descriptor to a
-// previous state.
-func Restore(fd int, state *State) error {
-	return windows.SetConsoleMode(windows.Handle(fd), state.mode)
-}
-
-// GetSize returns the visible dimensions of the given terminal.
-//
-// These dimensions don't include any scrollback buffer height.
-func GetSize(fd int) (width, height int, err error) {
-	var info windows.ConsoleScreenBufferInfo
-	if err := windows.GetConsoleScreenBufferInfo(windows.Handle(fd), &info); err != nil {
-		return 0, 0, err
-	}
-	return int(info.Window.Right - info.Window.Left + 1), int(info.Window.Bottom - info.Window.Top + 1), nil
-}
-
-// ReadPassword reads a line of input from a terminal without local echo.  This
-// is commonly used for inputting passwords and other sensitive data. The slice
-// returned does not include the \n.
-func ReadPassword(fd int) ([]byte, error) {
-	var st uint32
-	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
-		return nil, err
-	}
-	old := st
-
-	st &^= (windows.ENABLE_ECHO_INPUT)
-	st |= (windows.ENABLE_PROCESSED_INPUT | windows.ENABLE_LINE_INPUT | windows.ENABLE_PROCESSED_OUTPUT)
-	if err := windows.SetConsoleMode(windows.Handle(fd), st); err != nil {
-		return nil, err
-	}
-
-	defer windows.SetConsoleMode(windows.Handle(fd), old)
-
-	var h windows.Handle
-	p, _ := windows.GetCurrentProcess()
-	if err := windows.DuplicateHandle(p, windows.Handle(fd), p, &h, 0, false, windows.DUPLICATE_SAME_ACCESS); err != nil {
-		return nil, err
-	}
-
-	f := os.NewFile(uintptr(h), "stdin")
-	defer f.Close()
-	return readPasswordLine(f)
-}