我可以使用 NSDocument 写入资源分支吗？
我想将一些附加信息与文档一起存储，但我无法使用捆绑包或包，也无法将其存储在文档本身中。
该应用程序是一个文本编辑器，我希望它能够将代码折叠和书签位置与文档一起存储，但显然这不能直接嵌入到代码中，而且我不想用丑陋的注释来更改代码。
我可以使用 NSDocument 在文档的资源分支中存储信息吗？如果是这样，我该怎么做？我应该直接写入
I'd like to store some additional information along with a document, but I can't use bundles or packages, and I cannot store it inside the document itself.
The application is a text editor, and I'd like it to store code folding and bookmark locations with the document, but obviously this cannot be embedded into the code directly, and I don't want to alter the code with ugly comments.
Can I use NSDocument to store information in the resource fork of a document? If so, how can I do this? Should I directly write to <filename>/..namedfork/rsrc or is there an API available?
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首先，不要使用资源分支。它实际上已被弃用。相反，请使用扩展属性。它们可以通过
setxattr和getxattr。扩展属性用在很多地方……例如，在最新的 OS X 中，资源分支本身就是作为一种特殊类型的扩展属性实现的。例如，Cocoa 文本系统自动向文件添加扩展属性来指定编码。
我认为
NSFileManager和NSFileWrapper自 Snow Leopard 以来就支持扩展属性，但我找不到任何文档 :p 不过，您始终可以使用 BSD 级别的函数。First, don't use the resource fork. It's virtually deprecated. Instead, use extended attributes. They can be set programmatically at the BSD level via
setxattrandgetxattr. Extended attributes are used in many places... for example, in the latest OS X, the resource fork itself is implemented as a special type of extended attributes.For example, the Cocoa text system automatically adds an extended attribute to a file to specify the encoding.
I thought
NSFileManagerandNSFileWrappersupported extended attributes since Snow Leopard, but I can't find any documentation :p You can always use the BSD level functions, though.如果将文件复制到另一台计算机，状态是否需要随文件一起移动？如果没有，您可能会做得比模拟 Bare Bones 使用 BBEdit 处理文档状态的方式更糟糕。它们将所有文档的状态存储在 ~/Library/Preferences/com.barebones.bbedit.PreferenceData/Document State.plist 中。
资源分支文档在这里 。但它包含大量不使用资源分支的建议。
Does the state need to move with the file if it's copied to another computer? If not, you could do a lot worse than emulating the way Bare Bones handles document state with BBEdit. They store state for all documents in ~/Library/Preferences/com.barebones.bbedit.PreferenceData/Document State.plist.
The resource fork documentation is here. But it contains plenty of suggestions to not use the resource fork.
我的网站上有一个用于读取和编写资源分支的课程，但我一直没有时间将其转移到我的 GitHub 存储库，因为正如 Yuji 指出的那样，它们不再真正被使用。
我想说别名文件和网络互联网位置文件是它们唯一使用的地方，但我在 Mac OS X v10.7 (Lion)，甚至不再使用它们；它们仍可用于自定义图标。我没有专门对此进行测试。我必须看看这对 10.7 上的 NDalias 类有何影响。
ndresourcefork
I have a class on my web site for reading and writing resource forks, which I have never got around to moving to my GitHub repository because, as Yuji points out, they are not really used any more.
I was going to say alias files and web Internet location file are the only places they are used, but I used and tested it on Mac OS X v10.7 (Lion), and they are not even used there any more; they may still be used for custom icons. I didn't test for that exclusively. I will have to see how that affect my NDAlias class on 10.7.
ndresourcefork