/websites/code/studygolang/src/logger/logger.go

// Copyright 2013 The StudyGolang Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// http://studygolang.com
// Author：polaris	studygolang@gmail.com

package logger

import (
	"config"
	"io"
	"log"
	"os"
)

var (
	// 日志文件
	info_file  = config.ROOT + "/log/info.log"
	debug_file = config.ROOT + "/log/debug.log"
	error_file = config.ROOT + "/log/error.log"
)

func init() {
	os.Mkdir(config.ROOT+"/log/", 0777)
}

type logger struct {
	*log.Logger
}

func Infof(format string, args ...interface{}) {
	file, err := os.OpenFile(info_file, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0777)
	if err != nil {
		return
	}
	defer file.Close()
	New(file).Printf(format, args...)
}

func Infoln(args ...interface{}) {
	file, err := os.OpenFile(info_file, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0777)
	if err != nil {
		return
	}
	defer file.Close()
	New(file).Println(args...)
}

func Errorf(format string, args ...interface{}) {
	file, err := os.OpenFile(error_file, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0777)
	if err != nil {
		return
	}
	defer file.Close()
	New(file).Printf(format, args...)
}

func Errorln(args ...interface{}) {
	file, err := os.OpenFile(error_file, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0777)
	if err != nil {
		return
	}
	defer file.Close()
	New(file).Println(args...)
}

func New(out io.Writer) *logger {
	return &logger{
		Logger: log.New(out, "", log.LstdFlags),
	}
}