增加 守护进程

deamon.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"runtime"
+	"strconv"
+)
+
+func getPidFile() string {
+	return projectFolder + "/.fileboy.pid"
+}
+
+func runAsDeamon() (int, error) {
+	if runtime.GOOS == "windows" {
+		logAndExit(PreError, "daemons mode cannot run on windows.")
+	}
+	err := stopDeamon()
+	if err != nil {
+		logAndExit(PreError, err)
+	}
+	_, err = exec.LookPath("fileboy")
+	if err != nil {
+		logAndExit(PreError, "cannot found `fileboy` command in the PATH")
+	}
+	deamon := exec.Command("fileboy")
+	deamon.Dir = projectFolder
+	deamon.Env = os.Environ()
+	deamon.Stdout = os.Stdout
+	err = deamon.Start()
+	if err != nil {
+		logAndExit(PreError, err)
+	}
+	pid := deamon.Process.Pid
+	if pid != 0 {
+		ioutil.WriteFile(getPidFile(), []byte(strconv.Itoa(pid)), 0644)
+	}
+	return pid, nil
+}
+
+func stopDeamon() error {
+	bs, err := ioutil.ReadFile(getPidFile())
+	if err != nil {
+		return nil
+	}
+	_ = exec.Command("kill", string(bs)).Run()
+	os.Remove(getPidFile())
+	return nil
+}

fileboy.go

@@ -238,17 +238,32 @@ func watchChangeHandler(event fsnotify.Event) {
 }
 
 func parseArgs() {
-	switch len(os.Args) {
-	case 1:
+	switch {
+	case len(os.Args) == 1:
 		parseConfig()
 		done := make(chan bool)
 		initWatcher()
 		defer watcher.Close()
 		<-done
 		return
-	case 2:
+	case len(os.Args) > 1:
 		c := os.Args[1]
 		switch c {
+		case "deamon":
+			pid, err := runAsDeamon()
+			if err != nil {
+				logAndExit(PreError, err)
+			}
+			log.Println("PID:", pid)
+			log.Println("fileboy is ready. the main process will run as a daemons")
+			return
+		case "stop":
+			err := stopDeamon()
+			if err != nil {
+				logAndExit(PreError, err)
+			}
+			log.Println("fileboy daemon is stoped.")
+			return
 		case "init":
 			_, err := ioutil.ReadFile(getFileGirlPath())
 			if err == nil {

raw.go

@@ -96,6 +96,10 @@ Usage of fileboy:
         初始化 fileboy, 在当前目录生成 filegirl.yaml 配置文件
     exec 
         尝试运行定义的 command 命令
+    deamon 
+        读取当前目录下的 filegirl.yaml 配置，以守护进程的方式运行在后台
+    stop 
+        停止守护进程
     version 
         查看当前版本信息
 `