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From: fryd@g.gp.cs.cmu.edu (Michael Fryd)
Newsgroups: comp.sys.mac.programmer
Subject: Getting the full pathname?
Message-ID: <6464@pt.cs.cmu.edu>
Date: 9 Oct 89 20:39:00 GMT
Organization: Carnegie-Mellon University, CS/RI
Lines: 33


I am in the process of getting Scribe to run under MPW on the Mac.  One
of the problems I am trying to solve is how to get the full pathname from
a user specified partial pathname that starts with multiple ':'s?

The syntax "::folderb:filename" is like the Unix "../folderb/filename",
it means go up one level from the current directory, and then get
filename from folderb.

The standard solutions that have been posted all work in the normal case
of the user specifying a simple filename of the form "filename" 
or ":subfolder1:subfolder2:filename", but they give strange
results when the user tries "::folderb:filename".


The file manager understands this syntax.  If the default directory is
"HD:foldera" then a filename of "::folderb:filename" correctly gets
the file "HD:folderb:filename", however all of the standard routines
for getting the full pathname return "HD:foldera::folderb:filename".

Although "HD:foldera::folderb:filename" is a correct path to the file,
I would like to supply the more compact "HD:Folderb:filename".

Is there any way to get the real filename and directory name for an open
file?  I would like to avoid trying to parse the filename myself,  If
I can get the Mac to tell me where the file is, Scribe will have a better
chance of working when system 7 comes out.

Thanks
Michael Fryd			(412) 751-5557
MEFCO, Inc.			Fax: (412) 751-8403
2401 Coulter Road		Arpa: Michael.Fryd@cs.cmu.edu
McKeesport, PA  15131-4251