I'm trying to use the document architecture in an application that will
create documents for some very big files. I'd like not to have an
entire file in memory at once. To use the document architecture, I'm
subclassing NSDocument and overriding the readFromFileWrapper method.
As far as I can tell, there is no way to use a FileWrapper object to
read a file one buffer at a time.
Can I find out a filename, or a filehandle from a FileWrapper?
Alternatively, is there any way to have an NSDocument using the document
architecture which reads its files one buffer at a time?
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