yao/share/watch.go
2022-02-14 23:34:56 +08:00

105 lines
1.8 KiB
Go

package share
import (
"fmt"
"io/fs"
"log"
"os"
"path/filepath"
"github.com/fatih/color"
"github.com/fsnotify/fsnotify"
"github.com/yaoapp/kun/exception"
)
var watchDone = []chan bool{}
var watchOp = map[fsnotify.Op]string{
fsnotify.Create: "create",
fsnotify.Write: "write",
fsnotify.Remove: "remove",
fsnotify.Rename: "rename",
fsnotify.Chmod: "chmod",
}
// Watch 监听目录
func Watch(root string, cb func(op string, file string)) {
watcher, err := fsnotify.NewWatcher()
if err != nil {
log.Fatal(err)
}
defer watcher.Close()
watchDone = append(watchDone, make(chan bool))
last := len(watchDone) - 1
go func() {
for {
select {
case event, ok := <-watcher.Events:
if !ok {
return
}
// 监听子目录
if event.Op == fsnotify.Create {
file, err := os.Open(event.Name)
if err == nil {
fi, err := file.Stat()
file.Close()
if err == nil && fi.IsDir() {
Watch(event.Name, cb)
}
}
}
cb(watchOp[event.Op], event.Name)
case err, ok := <-watcher.Errors:
if !ok {
return
}
log.Println("Error:", err)
}
}
}()
err = watcher.Add(root)
if err != nil {
log.Fatal(err)
}
fmt.Println(color.GreenString("Watching: %s", root))
// 监听子目录
filepath.WalkDir(root, func(path string, d fs.DirEntry, err error) error {
if err != nil {
exception.Err(err, 500).Throw()
return err
}
if path == root {
return nil
}
if d.IsDir() {
go Watch(path, cb)
}
return nil
})
select {
case v := <-watchDone[last]:
fmt.Println(color.GreenString("Stop Watching: %s", root))
if v == true {
break
}
}
}
// StopWatch 停止监听
func StopWatch() {
for i := range watchDone {
fmt.Println(color.GreenString("Stop: %d", i))
watchDone[i] <- true
}
watchDone = []chan bool{}
}