Add features from README

text_formatter.go

@@ -0,0 +1,59 @@
+package logrus
+
+import (
+	"fmt"
+	"os"
+	"sort"
+	"strings"
+
+	"github.com/burke/ttyutils"
+)
+
+const (
+	nocolor = 0
+	red     = 31
+	green   = 32
+	yellow  = 33
+	blue    = 34
+)
+
+type TextFormatter struct {
+}
+
+func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
+	var serialized []byte
+
+	levelText := strings.ToUpper(entry.Data["level"].(string))[0:4]
+	levelColor := blue
+
+	if entry.Data["level"] == "warning" {
+		levelColor = yellow
+	} else if entry.Data["level"] == "fatal" ||
+		entry.Data["level"] == "panic" {
+		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 {
+		if k != "level" && k != "time" && k != "msg" {
+			keys = append(keys, k)
+		}
+	}
+	sort.Strings(keys)
+	first := true
+	for _, k := range keys {
+		v := entry.Data[k]
+		if first {
+			first = false
+		} else {
+			serialized = append(serialized, ' ')
+		}
+		serialized = append(serialized, []byte(fmt.Sprintf("\x1b[%dm%s\x1b[0m=%v", levelColor, k, v))...)
+	}
+
+	return append(serialized, '\n'), nil
+}