Go语言fsnotify接口实现监测文件修改

$ go get github.com/fsnotify/fsnotify

type Event struct {
    Name string    //文件或目录的相对路径
    Op      Op       //文件更改事件
}
func (e Event) String() string

type Op uint32
const (
    Create Op = 1 << iota
    Write
    Remove
    Rename
    Chmod
)

type Watcher struct {
    Events chan Event
    Errors chan error
    ...
}
func (w *Watcher) Add(name string) error
func (w *Watcher) Remove(name string) error 
func NewWatcher() (*Watcher, error)

func NewWatcher() (*Watcher, error)

import (
    "log"
    "github.com/fsnotify/fsnotify"
)
func main() {
    watcher, err := fsnotify.NewWatcher()
    if err != nil {
        log.Fatal("new watcher failed: ", err)
    }
    defer watcher.Close()
    done := make(chan bool)
    go func() {
        defer close(done)
        for {
            select {
            case event, ok := <-watcher.Events:
                if !ok {
                    return
                }
                log.Printf("%s %s\n", event.Name, event.Op)
            case err, ok := <-watcher.Errors:
                if !ok {
                    return
                }
                log.Println("error: ", err)
            }
        }
    }()
    err = watcher.Add("./")
    if err != nil {
        log.Fatal("add failed:", err)
    }
    <-done
}