go中使用xcopy问题追踪

源文件夹： "C:\workspace_go\test_pb"
目标文件夹 "C:\workspace_go\fff"
os.Stat | err: CreateFile "C:\workspace_go\fff": The filename, directory name, or volume label syntax is incorrect.

API server listening at: 127.0.0.1:20075
源文件夹： C:\workspace_go\test_pb
目标文件夹 C:\workspace_go\fff
windows
cmdOut:  ???? C:\workspace_go\fff\Common.proto (Y:??/N:??/A:???)?
???? C:\workspace_go\fff\Common.proto (Y:??/N:??/A:???)?
cmd.Run() | err: exit status 2
--- FAIL: TestCopyDir (18.72s)
    --- FAIL: TestCopyDir/case1 (18.72s)
        utils_test.go:21: CopyDir() error = exit status 2, wantErr false
FAIL
Process exiting with code: 0

func CopyDir(src string, dst string) error {
	// src = fmt.Sprintf(`‘%s‘`, src)
	// dst = fmt.Sprintf(`‘%s‘`, dst)
	src = strings.Replace(src, splitor, `\`, -1) // splitor = `\`
	dst = strings.Replace(dst, splitor, `\`, -1)
	// src = strings.Replace(src, `\`, splitor, -1)
	// dst = strings.Replace(dst, `\`, splitor, -1)
	fmt.Println("源文件夹：", src)
	fmt.Println("目标文件夹", dst)

	_, err := os.Stat(dst)
	if err != nil {
		if os.IsNotExist(err) {
			os.MkdirAll(dst, os.ModePerm)
		}
		fmt.Printf("os.Stat | err: %v\n", err)
	}

	var cmd *exec.Cmd
	var cmdOut bytes.Buffer
	switch runtime.GOOS {
	case "windows":
		fmt.Println("windows")
		cmd = exec.Command("xcopy", src, dst, "/I", "/E", "/-y")
		cmd.Stdout = &cmdOut
		e := cmd.Run()
		fmt.Println("cmdOut: ", cmdOut.String())
		if e != nil {
			fmt.Printf("cmd.Run() | err: %v\n", e)
			return e
		}
	case "darwin", "linux":
		fmt.Println("darwin", "linux")
		cmd = exec.Command("cp", "-R", src, dst)
	}

	outPut, e := cmd.Output()
	if e != nil {
		return e
	}
	fmt.Printf("output: %s\n", string(outPut))
	return nil
}