1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
// Package cli implements a colored text handler suitable for command-line interfaces.
package cli
import (
"fmt"
"io"
"os"
"sync"
"github.com/bep/logg"
"github.com/fatih/color"
colorable "github.com/mattn/go-colorable"
)
// Default handler outputting to stderr.
var Default = New(os.Stderr)
var bold = color.New(color.Bold)
// Colors mapping.
var Colors = [...]*color.Color{
logg.LevelTrace: color.New(color.FgWhite),
logg.LevelDebug: color.New(color.FgWhite),
logg.LevelInfo: color.New(color.FgBlue),
logg.LevelWarn: color.New(color.FgYellow),
logg.LevelError: color.New(color.FgRed),
}
// Strings mapping.
var Strings = [...]string{
logg.LevelTrace: "•",
logg.LevelDebug: "•",
logg.LevelInfo: "•",
logg.LevelWarn: "•",
logg.LevelError: "⨯",
}
// Handler implementation.
type Handler struct {
mu sync.Mutex
Writer io.Writer
Padding int
}
// New handler.
func New(w io.Writer) *Handler {
if f, ok := w.(*os.File); ok {
return &Handler{
Writer: colorable.NewColorable(f),
Padding: 3,
}
}
return &Handler{
Writer: w,
Padding: 3,
}
}
// HandleLog implements logg.Handler.
func (h *Handler) HandleLog(e *logg.Entry) error {
color := Colors[e.Level]
level := Strings[e.Level]
h.mu.Lock()
defer h.mu.Unlock()
color.Fprintf(h.Writer, "%s %-25s", bold.Sprintf("%*s", h.Padding+1, level), e.Message)
for _, field := range e.Fields {
if field.Name == "source" {
continue
}
fmt.Fprintf(h.Writer, " %s=%v", color.Sprint(field.Name), field.Value)
}
fmt.Fprintln(h.Writer)
return nil
}
|
