Windows – Node.js 0.5.x的递归目录创建

我有一个下载文件的功能,并将其保存在基于发送给它的参数的嵌套目录结构中(例如：./somedir/a/b/c或./somedir2/a/d/b).我不能相信任何目录一直被创建,所以我需要沿文件路径检查和创建每个目录,如果它不存在.现在,我有一些代码可以很好地适用于Node 0.4.x,但至少在 Windows版本的Node 0.5.x中有一些破坏(具体在0.5.10上测试).

理解文件系统是非常糟糕的,所以如果有人能弄清楚我能做什么工作,或者用其他类似的东西替换它,我将非常感激.目标是在Unix和Windows以及Node 0.4.x和0.5.x上都能正常运行代码.

// automatically create directories if they do not exist at a path
function mkdirs(_path,mode,callback) {
  var dirs = _path.split("/");
  var walker = [dirs.shift()];

  var walk = function (ds,acc,m,cb) {
    if (ds.length > 0) {
      var d = ds.shift();
      acc.push(d);
      var dir = acc.join("/");

      fs.stat(dir,function (err,stat) {
        if (err) {
          // file does not exist
          if (err.errno == 2) {
            fs.mkdir(dir,function (erro) {
              if (erro && erro.errno != 17) {
                terminal.error(erro,"Failed to make " + dir);
                return cb(new Error("Failed to make " + dir + "n" + erro));
              } else {
                return walk(ds,cb);
              }
            });
          } else {
            return cb(err);
          }
        } else {
          if (stat.isDirectory()) {
            return walk(ds,cb);
          } else {
            return cb(new Error("Failed to mkdir " + dir + ": File existsn"));
          }
        }
      });
    } else {
      return cb();
    }
  };
  return walk(dirs,walker,callback);
};

使用示例

mkdirs('/path/to/file/directory/',0777,function(err){

编辑：节点0.8.x的更新(在CoffeeScript中)：

# 
# Function mkdirs
# Ensures all directories in a path exist by creating those that don't
# @params
#    path:      string of the path to create (directories only,no files!)
#    mode:      the integer permission level
#    callback:  the callback to be used when complete
# @callback
#    an error object or false
#
mkdirs = (path,callback) ->
  tryDirectory = (dir,cb) ->
    fs.stat dir,(err,stat) ->
      if err #the file doesn't exist,try one stage earlier then create
        if err.errno is 2 or err.errno is 32 or err.errno is 34
          if dir.lastIndexOf("/") is dir.indexOf("/") #only slash remaining is initial slash
            #should only be triggered when path is '/' in Unix,or 'C:/' in Windows
            cb new Error("notfound")
          else
            tryDirectory dir.substr(0,dir.lastIndexOf("/")),(err) ->
              if err #error,return
                cb err
              else #make this directory
                fs.mkdir dir,(error) ->
                  if error and error.errno isnt 17
                    cb new Error("failed")
                  else
                    cb()
        else #unkown error
          cb err
      else
        if stat.isDirectory() #directory exists,no need to check previous directories
          cb()
        else #file exists at location,cannot make folder
          cb new Error("exists")
  path = (if path.indexOf("") >= 0 then path.replace("","/") else path) #change windows slashes to unix
  path = path.substr(0,path.length - 1)  if path.substr(path.length - 1) is "/" #remove trailing slash
  tryDirectory path,callback