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dog.go
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dog.go
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package main
import (
"fmt"
"github.com/fsnotify/fsnotify"
"log"
"os"
"path/filepath"
)
type Dog struct {
watcher *fsnotify.Watcher
}
func NewDog() *Dog {
watcher, err := fsnotify.NewWatcher()
if err != nil {
}
return &Dog{
watcher: watcher,
}
}
func (d *Dog) Watch(path string) {
stat, err := os.Stat(path)
if err != nil {
// dir is not exists
return
}
if stat.IsDir() {
d.watchDir(path)
} else {
d.watchFile(path)
}
}
func (d *Dog) watchDir(dir string) {
err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
//判断是否为目录,监控目录,目录下文件也在监控范围内,不需要加
if info.IsDir() {
path, err := filepath.Abs(path)
if err != nil {
return err
}
err = d.watcher.Add(path)
if err != nil {
return err
}
fmt.Println("监控 : ", path)
}
return nil
})
if err != nil {
log.Println("WalkWatch error", err)
}
}
func (d *Dog) watchFile(file string) {
abs, _ := filepath.Abs(file)
_ = d.watcher.Add(abs)
}
func (d *Dog) EventHandler() {
for {
select {
case ev := <-d.watcher.Events:
{
if ev.Op&fsnotify.Create == fsnotify.Create {
fmt.Println("创建文件 : ", ev.Name)
//获取新创建文件的信息,如果是目录,则加入监控中
file, err := os.Stat(ev.Name)
if err == nil && file.IsDir() {
d.watcher.Add(ev.Name)
fmt.Println("添加监控 : ", ev.Name)
}
}
if ev.Op&fsnotify.Write == fsnotify.Write {
//fmt.Println("写入文件 : ", ev.Name)
}
if ev.Op&fsnotify.Remove == fsnotify.Remove {
fmt.Println("删除文件 : ", ev.Name)
//如果删除文件是目录,则移除监控
fi, err := os.Stat(ev.Name)
if err == nil && fi.IsDir() {
d.watcher.Remove(ev.Name)
fmt.Println("删除监控 : ", ev.Name)
}
}
if ev.Op&fsnotify.Rename == fsnotify.Rename {
//如果重命名文件是目录,则移除监控 ,注意这里无法使用os.Stat来判断是否是目录了
//因为重命名后,go已经无法找到原文件来获取信息了,所以简单粗爆直接remove
fmt.Println("重命名文件 : ", ev.Name)
d.watcher.Remove(ev.Name)
}
if ev.Op&fsnotify.Chmod == fsnotify.Chmod {
fmt.Println("修改权限 : ", ev.Name)
}
}
case err := <-d.watcher.Errors:
{
fmt.Println("error : ", err)
return
}
}
}
}