Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!gem.mps.ohio-state.edu!apple!keith
From: keith@Apple.COM (Keith Rollin)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Getting the full pathname?
Message-ID: <35671@apple.Apple.COM>
Date: 16 Oct 89 02:18:52 GMT
References: <850zebolskyd@yvax.byu.edu> <111@crucible.UUCP>
Organization: Apple Computer Inc, Cupertino, CA
Lines: 26

In article <111@crucible.UUCP> al@crucible.UUCP (Al Evans) writes:
>In article <850zebolskyd@yvax.byu.edu> zebolskyd@yvax.byu.edu writes:
>
>>If you want the _user_ to be able to see the pathname (and find their way to
>>the file) you can use PBGetWDInfo to get the dirID from your working
>>directory, then PBGetCatInfo to get that directory's parent's dirID, and
>>so on until to get to dirID=2, which will be the root. You get the names
>		       ^^^^^^^
>      Although this seems to be true, it doesn't seem to be documented :-(

This *IS* documented. Check out the top of page 92 of Inside Mac IV. In add-
ition, this is the technique used in Technote #238 and DTS Sample Code #18:
Standard File. Finally, there is a constant defined in the MPW headers
(fsRtDirID) that identifies the root as 2.

On the other hand, I, too, have a hard time relying on this bit of information.
Your alternate technique may have merit; I'll have to take a look at it. I'd
probably base my exit condition on a specific error rather than just any old
error, but so far it looks pretty good.

-- 
------------------------------------------------------------------------------
Keith Rollin  ---  Apple Computer, Inc.  ---  Developer Technical Support
INTERNET: keith@apple.com
    UUCP: {decwrl, hoptoad, nsc, sun, amdahl}!apple!keith
"Argue for your Apple, and sure enough, it's yours" - Keith Rollin, Contusions