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From: alan@Apple.COM (Alan Mimms)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Getting a complete pathname
Message-ID: <734@internal.Apple.COM>
Date: 21 Feb 89 17:39:48 GMT
References: <7326@june.cs.washington.edu>
Organization: Apple Computer Inc, Cupertino, CA
Lines: 23

In article <7326@june.cs.washington.edu> marty@june.cs.washington.edu (Marty Sirkin) writes:
>name and directory ref number.  I really need the pathname, not the number
>as I need to use the staandard pascal reset/rewrite...

You can create a textual pathname given a directory ref num easily.
The idea is to climb up via the parent directory ID from the directory
you've been given, prepending the name of each directory as you go to
the results of the previous iterations.

Just use the PBGetCatInfo trap with ioFDirIndex set to -1 and ioDrDirID
set to zero.  After each trap, set the ioDrDirID to the ioDrParID
returned by the just-completed call.  The ioNamePtr should point to a
buffer, in which the portion of the pathname pertaining to the current
folder is returned.  You can catenate these together
(first-in-last-out) to build a complete pathname.  Stop the iteration
when you get a dirID of 2, which is the root directory (always).

Hope this helps.
-- 
Alan Mimms			My opinions are generally
Communications Products Group	pretty worthless, but
Apple Computer			they *are* my own...
...it's so simple that only a child can do it!  -- Tom Lehrer, "New Math"