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prtty.go
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prtty.go
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// Copyright 2015 Alex Browne. All rights reserved.
// Use of this source code is governed by the MIT
// license, which can be found in the LICENSE file.
// package prtty is a small go library for logging things with color.
package prtty
import (
"fmt"
"github.com/wsxiaoys/terminal/color"
"io"
"log"
"os"
)
const (
// Color settings for the different logging functions
// See: https://godoc.org/github.com/wsxiaoys/terminal/color
ColorRed = "@r"
ColorGreen = "@g"
ColorBlue = "@b"
ColorCyan = "@c"
ColorMagenta = "@m"
ColorYellow = "@y"
ColorBlack = "@k"
ColorWhite = "@w"
)
var (
Default = NewLogger(os.Stdout, ColorWhite)
Info = NewLogger(os.Stdout, ColorCyan)
Warn = NewLogger(os.Stdout, ColorYellow)
Success = NewLogger(os.Stdout, ColorGreen)
Error = NewLogger(os.Stderr, ColorRed)
DefaultLoggers LoggerGroup
AllLoggers LoggerGroup
)
type Logger struct {
Output io.Writer
Color string
}
type LoggerGroup []*Logger
func init() {
DefaultLoggers = LoggerGroup{Default, Info, Warn, Success, Error}
AllLoggers = append(LoggerGroup{}, DefaultLoggers...)
}
func NewLogger(out io.Writer, color string) *Logger {
logger := &Logger{
Output: out,
Color: color,
}
AllLoggers = append(AllLoggers, logger)
return logger
}
func (lg LoggerGroup) SetOutput(out io.Writer) {
for _, logger := range lg {
logger.Output = out
}
}
func (lg LoggerGroup) SetColor(color string) {
for _, logger := range lg {
logger.Color = color
}
}
func (l *Logger) Print(v ...interface{}) {
log.SetOutput(l.Output)
log.Print(color.Sprint(l.Color + fmt.Sprint(v...)))
}
func (l *Logger) Println(v ...interface{}) {
log.SetOutput(l.Output)
log.Println(color.Sprint(l.Color + fmt.Sprint(v...)))
}
func (l *Logger) Printf(format string, v ...interface{}) {
log.SetOutput(l.Output)
log.Printf(color.Sprint(l.Color + fmt.Sprintf(format, v...)))
}
func (l *Logger) Panic(v ...interface{}) {
log.SetOutput(l.Output)
log.Panic(color.Sprint(l.Color + fmt.Sprint(v...)))
}
func (l *Logger) Panicln(v ...interface{}) {
log.SetOutput(l.Output)
log.Panicln(color.Sprint(l.Color + fmt.Sprint(v...)))
}
func (l *Logger) Panicf(format string, v ...interface{}) {
log.SetOutput(l.Output)
log.Panicf(color.Sprint(l.Color + fmt.Sprintf(format, v...)))
}
func (l *Logger) Fatal(v ...interface{}) {
log.SetOutput(l.Output)
log.Fatal(color.Sprint(l.Color + fmt.Sprint(v...)))
}
func (l *Logger) Fatalln(v ...interface{}) {
log.SetOutput(l.Output)
log.Fatalln(color.Sprint(l.Color + fmt.Sprint(v...)))
}
func (l *Logger) Fatalf(format string, v ...interface{}) {
log.SetOutput(l.Output)
log.Fatalf(color.Sprint(l.Color + fmt.Sprintf(format, v...)))
}