package main

import (
    "fmt"
    "log"
    "os"
	
	"runtime"
	"strconv"
)

func main() {
    
    logFile, err := os.OpenFile("test.log", os.O_RDWR | os.O_CREATE, 0777)
    if err != nil {
        fmt.Printf("open file error=%s\r\n", err.Error())
        os.Exit(-1)
    }
    defer logFile.Close()
	
    //logger:=log.New(logFile,"\r\n", log.Ldate | log.Ltime | log.Llongfile)
	logger:=log.New(logFile,"", log.Ldate|log.Ltime|log.Lshortfile)
    logger.Println("normal log 1")
    logger.Println("normal log 2")
	logger.Output(2, fmt.Sprintln("debug", "mmmmmmmmmmmmmmm"))
    //logger.Info("fatal 1")
    //logger.Warn("fatal 2")
	
	_, file, line, _ := runtime.Caller(2)
	short := file
	for i := len(file) - 1; i > 0; i-- {
		if file[i] == '/' {
			short = file[i+1:]
			break
		}
	}
	file = short
	log.Println(file, strconv.Itoa(line),"11111", "ccccccccccccccc")
	
	alllog()
	
	alllog2()
		
	alllog3()	
}

func alllog2(){
	alllog()
}

func alllog3(){
	alllog2()
}

func alllog(){
	_, file, line, _ := runtime.Caller(2)
	short := file
	for i := len(file) - 1; i > 0; i-- {
		if file[i] == '/' {
			short = file[i+1:]
			break
		}
	}
	file = short
	log.Println(file, strconv.Itoa(line), "1111","ddddddddddddddddddd")
}