Firefox插件中带有附加SDK的更多存储空间 [英] More storage in a Firefox addon with Add-on SDK

问题描述

我想用插件生成器开发一个插件。我读了简单的存储，他的插件可以有大约5兆字节，但5毫克不会为我的应用程序。我需要更多。我能做什么？

解决方案

相反，您可以爆发并在用户个人资料目录中创建一个文件（请参阅文件I / O代码片段）。例如。按照这些行来从用户的配置文件中读取文件 myData.txt ：
$ b

  var {Cu，components} = require（chrome）; 
 var {FileUtils} = Cu.import（resource：//gre/modules/FileUtils.jsm）; 
 var {NetUtils} = Cu.import（resource：//gre/modules/NetUtil.jsm）; 
 var file = FileUtils.getFile（ProfD，[myData.txt]）; 
 
 NetUtil.asyncFetch（file，function（inputStream，status）{
 if（！components.isSuccessCode（status））{
 //处理错误！
 return ; 
} 
 
 //文件数据包含在inputStream中
 //你可以用
将它读入字符串var data = NetUtil.readInputStreamToString（inputStream ，inputStream.available（））; 
 console.log（data）; 
}）; 
  

请注意，导入模块的异常语法是由于错误683217 。

I want to develop an addon with the addon builder. I read that with simple storage one can have about 5 megabytes for his addon, but 5 mgb won't do it for my app. I need more. What could I do?

解决方案

You cannot do much given the Add-on SDK API. Instead you could break out of the sandbox and create a file in user's profile directory (see File I/O code snippets). E.g. something along these lines to read the file myData.txt from user's profile:

var {Cu, components} = require("chrome");
var {FileUtils} = Cu.import("resource://gre/modules/FileUtils.jsm");
var {NetUtils} = Cu.import("resource://gre/modules/NetUtil.jsm");
var file = FileUtils.getFile("ProfD", ["myData.txt"]);

NetUtil.asyncFetch(file, function(inputStream, status) {
  if (!components.isSuccessCode(status)) {
    // Handle error!
    return;
  }

  // The file data is contained within inputStream.
  // You can read it into a string with
  var data = NetUtil.readInputStreamToString(inputStream, inputStream.available());
  console.log(data);
});

Note that the unusual syntax to import modules is due to bug 683217.

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