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Re: FileWrappers
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Re: FileWrappers


  • Subject: Re: FileWrappers
  • From: Rainer Brockerhoff <email@hidden>
  • Date: Sat, 17 Jan 2004 14:24:54 -0200

>From: April Gendill <email@hidden>
>Date: Sat, 17 Jan 2004 01:41:53 -0700
>
> I have been looking at some of the file packages here and there and
>have come to the conclusion I don't understand how they work. So... I
>examined the code for textedit but it only deals with rtfd which really
>does not help. I've looked on Apple's site but other than the docs
>which are less informative than the header files there was no info I
>could find.
> What I am working on has three different files that it uses and for a
>part of it all three are used, and I would like to use a package file
>to handle this but I cannot seem to find any useful information or even
>a simple example. In the docs it talks about dictionaries and such but
>I don't see any .dict or other similar files in the package (using
>terminal ls -a) thus the data is obviously stored elsewhere. Where can
>I find something either laid out for those of us less informed in cocoa
>or some examples that create their own packages for an idea of how this
>is done. My structure is simple really, 1 array of items that is
>actually the master list, one array that is dormant and 1 that is
>currently being worked with.

As has been explained elsewhere, you need to declare your file extension with the LSTypeIsPackage key set to YES in the CFBundleDocumentTypes list. When creating a file package, create a folder with that file extension, and inside that there's no set format. So you can create several files inside the folder, and handle them as you wish.

I also recommend setting the folder's package flag (which for folders has the same value as kHasBundle in <Finder.h>), this is honored in Mac OS 9 and (at least for now) in Mac OS X, too.

So inside your package folder you could have a .plist file with the index arrays, or dictionaries, or whatever, and any number of other files.

HTH,
--
Rainer Brockerhoff <email@hidden>
Belo Horizonte, Brazil
"It's extremely unlucky to be superstitious, for no other reason
than it is always unlucky to be colossally stupid." (Stephen Fry)
Weblog: http://www.brockerhoff.net/bb/viewtopic.php
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