package main

import (
	"fmt"
	"io/IoUtil"
	"sort"
	"time"
)

type info struct {
	Name string
	Time time.Time
}
type newlist []*info

func main() {
	l,e := getFilelist("./")
	if e != nil {
		fmt.Println(e)
	}
	sort.Sort(newlist(l))  //调用标准库的sort.Sort必须要先实现Len(),Less(),Swap() 三个方法.
	for _,v := range l {
		fmt.Println("文件名：",v.Name,"修改时间：",v.Time.Unix())
	}
}

func getFilelist(path string) ([]*info,error) {
	l,err := IoUtil.ReadDir(path)
	if err != nil {
		return []*info{},err
	}
	var list []*info
	for _,v := range l {
		list = append(list,&info{v.Name(),v.ModTime()})
	}
	return list,nil
}

func (I newlist) Len() int {
	return len(I)
}
func (I newlist) Less(i,j int) bool {
	return I[i].Time.Unix() < I[j].Time.Unix()
}
func (I newlist) Swap(i,j int) {
	I[i],I[j] = I[j],I[i]
}