text_formatter: change to simpler k-v when no tty

text_formatter.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 	"sort"
+	"strconv"
 	"strings"
 
 	"github.com/burke/ttyutils"
@@ -23,7 +24,9 @@ type TextFormatter struct {
 func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 	var serialized []byte
 
+	if ttyutils.IsTerminal(os.Stdout.Fd()) {
 		levelText := strings.ToUpper(entry.Data["level"].(string))[0:4]
+
 		levelColor := blue
 
 		if entry.Data["level"] == "warning" {
@@ -33,9 +36,7 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 			levelColor = red
 		}
 
-	if ttyutils.IsTerminal(os.Stdout.Fd()) {
 		serialized = append(serialized, []byte(fmt.Sprintf("\x1b[%dm%s\x1b[0m[%04d] %-45s ", levelColor, levelText, miniTS(), entry.Data["msg"]))...)
-	}
 
 		keys := make([]string, 0)
 		for k, _ := range entry.Data {
@@ -54,6 +55,40 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 			}
 			serialized = append(serialized, []byte(fmt.Sprintf("\x1b[%dm%s\x1b[0m=%v", levelColor, k, v))...)
 		}
+	} else {
+		serialized = f.AppendKeyValue(serialized, "time", entry.Data["time"].(string))
+		serialized = f.AppendKeyValue(serialized, "level", entry.Data["level"].(string))
+		serialized = f.AppendKeyValue(serialized, "msg", entry.Data["msg"].(string))
+
+		for key, value := range entry.Data {
+			if key != "time" && key != "level" && key != "msg" {
+				serialized = append(serialized, []byte(fmt.Sprintf("%s=%s ",
+					f.ToString(key, false), f.ToString(value, true)))...)
+			}
+		}
+	}
 
 	return append(serialized, '\n'), nil
 }
+
+func (f *TextFormatter) AppendKeyValue(serialized []byte, key, value string) []byte {
+	return append(serialized, []byte(fmt.Sprintf("%s=%s ",
+		f.ToString(key, false), f.ToString(value, true)))...)
+}
+
+func (f *TextFormatter) ToString(value interface{}, escapeStrings bool) string {
+	switch value.(type) {
+	default:
+		if escapeStrings {
+			return fmt.Sprintf("'%s'", value)
+		} else {
+			return fmt.Sprintf("%s", value)
+		}
+	case int:
+		return fmt.Sprintf("%s", strconv.Itoa(value.(int)))
+	case uint64:
+		return fmt.Sprintf("%s", strconv.FormatUint(value.(uint64), 10))
+	case bool:
+		return fmt.Sprintf("%s", strconv.FormatBool(value.(bool)))
+	}
+}