引用一个二进制组件到js-ctypes [英] Reference a binary-component to js-ctypes

问题描述

我在 chrome.manifest 中注册了一个二进制组件：

I have registered a binary component in my chrome.manifest:

binary-component components/linux/myLib.so abi=Linux_x86-gcc3

现在我想将其路径传递给 ctypes.open（）。我的问题是：如何引用二进制组件，所以我可以将它传递给 ctypes.open（）？

Now I want to pass its path to ctypes.open(). My question is: how do I reference the binary component so I can pass it to ctypes.open()?

推荐答案

chrome.manifest中列出的二进制组件应该是XPCOM组件。另一方面，你是一个普通的图书馆，不需要在清单上列出 - 这是一个非常手动的方法。您的代码需要检查nsIXULRuntime.XPCOMABI（请参阅 https://developer.mozilla.org/En/NsIXULRuntime）来查看平台是否兼容。然后你需要得到你的库文件的位置，如下所示：

The binary components listed in chrome.manifest should be XPCOM components. Yours on the other hand is a regular library, no need to list it in the manifest - it is a very "manual" approach instead. Your code needs to check nsIXULRuntime.XPCOMABI (see https://developer.mozilla.org/En/NsIXULRuntime) to see whether the platform is compatible. Then you need to get the location of your library file, something like this:

Components.utils.import("resource://gre/modules/AddonManager.jsm");
AddonManager.getAddonByID("[e-mail]", function(addon)
{
    var uri = addon.getResourceURI("components/linux/myLib.so");
    if (uri instanceof Components.interfaces.nsIFileURL)
    {
        ctypes.open(uri.file.path);
        ...
    }
});

getAddonByID（）的第一个参数需要替换为您的加载项ID 。这里的假设是你的加载项已经解压安装（install.rdf中指定的< em：unpack> true< / em：unpack> 不是要加载的磁盘上的文件。

The first parameter to getAddonByID() needs to be replaced by the ID of your add-on of course. And the assumption here is that your add-on is installed unpacked (<em:unpack>true</em:unpack> specified in install.rdf) because otherwise there won't be a file on disk to be loaded.

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