vendor: update all dependencies to latest versions

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

@@ -3,10 +3,14 @@ package logrus
 import (
 	"bytes"
 	"fmt"
+	"io"
+	"os"
 	"sort"
 	"strings"
 	"sync"
 	"time"
+
+	"golang.org/x/crypto/ssh/terminal"
 )
 
 const (
@@ -26,6 +30,7 @@ func init() {
 	baseTimestamp = time.Now()
 }
 
+// TextFormatter formats logs into text
 type TextFormatter struct {
 	// Set to true to bypass checking for a TTY before outputting colors.
 	ForceColors bool
@@ -52,10 +57,6 @@ type TextFormatter struct {
 	// QuoteEmptyFields will wrap empty fields in quotes if true
 	QuoteEmptyFields bool
 
-	// QuoteCharacter can be set to the override the default quoting character "
-	// with something else. For example: ', or `.
-	QuoteCharacter string
-
 	// Whether the logger's out is to a terminal
 	isTerminal bool
 
@@ -63,14 +64,21 @@ type TextFormatter struct {
 }
 
 func (f *TextFormatter) init(entry *Entry) {
-	if len(f.QuoteCharacter) == 0 {
-		f.QuoteCharacter = "\""
-	}
 	if entry.Logger != nil {
-		f.isTerminal = IsTerminal(entry.Logger.Out)
+		f.isTerminal = f.checkIfTerminal(entry.Logger.Out)
 	}
 }
 
+func (f *TextFormatter) checkIfTerminal(w io.Writer) bool {
+	switch v := w.(type) {
+	case *os.File:
+		return terminal.IsTerminal(int(v.Fd()))
+	default:
+		return false
+	}
+}
+
+// Format renders a single log entry
 func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 	var b *bytes.Buffer
 	keys := make([]string, 0, len(entry.Data))
@@ -95,7 +103,7 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 
 	timestampFormat := f.TimestampFormat
 	if timestampFormat == "" {
-		timestampFormat = DefaultTimestampFormat
+		timestampFormat = defaultTimestampFormat
 	}
 	if isColored {
 		f.printColored(b, entry, keys, timestampFormat)
@@ -161,11 +169,12 @@ func (f *TextFormatter) needsQuoting(text string) bool {
 }
 
 func (f *TextFormatter) appendKeyValue(b *bytes.Buffer, key string, value interface{}) {
-
+	if b.Len() > 0 {
+		b.WriteByte(' ')
+	}
 	b.WriteString(key)
 	b.WriteByte('=')
 	f.appendValue(b, value)
-	b.WriteByte(' ')
 }
 
 func (f *TextFormatter) appendValue(b *bytes.Buffer, value interface{}) {
@@ -177,13 +186,6 @@ func (f *TextFormatter) appendValue(b *bytes.Buffer, value interface{}) {
 	if !f.needsQuoting(stringVal) {
 		b.WriteString(stringVal)
 	} else {
-		b.WriteString(f.quoteString(stringVal))
+		b.WriteString(fmt.Sprintf("%q", stringVal))
 	}
 }
-
-func (f *TextFormatter) quoteString(v string) string {
-	escapedQuote := fmt.Sprintf("\\%s", f.QuoteCharacter)
-	escapedValue := strings.Replace(v, f.QuoteCharacter, escapedQuote, -1)
-
-	return fmt.Sprintf("%s%v%s", f.QuoteCharacter, escapedValue, f.QuoteCharacter)
-}