判断路径及文件是否存在

isDirOrFile.go

// internal utility methods
func webTime(t time.Time) string {
    ftime := t.Format(time.RFC1123)
    if strings.HasSuffix(ftime, "UTC") {
        ftime = ftime[0:len(ftime)-3] + "GMT"
    }
    return ftime
}

func dirExists(dir string) bool {
    d, e := os.Stat(dir)
    switch {
    case e != nil:
        return false
    case !d.IsDir():
        return false
    }

    return true
}

func fileExists(dir string) bool {
    info, err := os.Stat(dir)
    if err != nil {
        return false
    }

    return !info.IsDir()
}