使用chrome.filesystem保存并更改文件的名称 [英] save and change the name of the file with chrome.filesystem

问题描述

这可能与chrome.fileSystem保存客户端磁盘上的文件，但通过更改文件名。例如，我压缩一个文件，我希望这个文件以我的新名字newFile.min.js存储在光盘上。我可以将文件保存到磁盘，但不能更改其名称。我想要的是，所有的事情都是在无声的情况下完成的，没有一个窗口要求的位置。

这是我用来保存我的文件的功能：

  function saveToEntry（entry，result）{
 setTitle（）; 
 
 var blob = new Blob（[result]，{type：'text / plain'}）; 
 currentEntry.createWriter（function（writer）{
 writer.onwrite = function（）{
 writer.onwrite = null; 
 writer.write（blob）; 
 } 
 writer.truncate（blob.size）; 
}）; 
 
 
函数setTitle（）{
 chrome.fileSystem.getDisplayPath（
 currentEntry，
函数（路径）{
 console.log （path）; 
 document.title = path; 
}）; 
} 
  

这可能吗？如果是这样的话，如果你有任何的例子来指导我会很棒。如果没有的话，会太​​棒了：）

预先感谢您的建议！

解决方案为此（保存在一个单独的文件中），恐怕你需要询问用户对文件夹的写入权限，而不是单个文件。然后你就可以在其中创建一个新的文件。

我建议你或者要求用户选择一个working目录，提供一个应用内文件然后将结果保存到普通文件旁边。另外，也可以让用户选择一个输出文件夹，并将结果转储到那里。

/ p>

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另一个解决方案是要求 Native Host模块。您将能够以与用户相同的权限访问系统。但是，它将限制您的部署选项：您将需要单独的模块安装程序，无法在Chrome网上应用店中托管。

Is this possible with chrome.fileSystem to save a file on the client's disk, but by changing the file name. For example, I compress a file and I want that file is stored on the disc with my new name newFile.min.js for example. I can save the file to disk, but not to change its name. And what I would like is that everything is done in a "silent" without a window that asks for the location.

Here is the function I use to save my files:

    function saveToEntry(entry, result) {
  setTitle();

  var blob = new Blob([result], {type: 'text/plain'});
  currentEntry.createWriter(function(writer) {
    writer.onwrite = function() {
      writer.onwrite = null;
      writer.write(blob);
    }
    writer.truncate(blob.size);
  });
}

function setTitle() {
  chrome.fileSystem.getDisplayPath(
      currentEntry,
      function(path) {
console.log(path);
        document.title = path;
      });
}

Is this possible? And if so, if you have any example to guide me would be great. If not, would be great too :)

Thank you in advance for your advice!

解决方案

For that (saving in a separate file), I'm afraid that you need to ask the user for write access for a folder, not an individual file. Then you will be able to create a new file in it.

I suggest that you either ask the user to select a "working" directory, present an in-app file picker from that folder, and save the result next to the normal file.

Alternatively, ask the user to select an "output" folder, and dump the results there.

---

Another solution would be to require a Native Host module. You'll be able to access the system with the same rights as the user. It will limit your deployment options though: you'll need a separate installer for your module that can't be hosted on Chrome Web Store.

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