Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!seismo!rutgers!ames!ptsfa!ihnp4!inuxc!pur-ee!j.cc.purdue.edu!tim
From: tim@j.cc.purdue.edu (Timothy Lange)
Newsgroups: comp.sys.ibm.pc
Subject: Re: How do you read an MS-DOS directory?
Message-ID: <4227@j.cc.purdue.edu>
Date: Sun, 17-May-87 09:45:52 EDT
Article-I.D.: j.4227
Posted: Sun May 17 09:45:52 1987
Date-Received: Sun, 17-May-87 19:46:49 EDT
References: <63@lzaz.ATT.COM> <956@bucsb.bu.edu.UUCP>
Reply-To: tim@j.cc.purdue.edu.UUCP (Timothy Lange)
Organization: PC Learning Resource Center, Purdue University
Lines: 13

Using an extended FCB with the proper file name (or wild cards), and the
attribute for 'directory' will allow you to find and open directory
files.  The thing I ran into was the size of the directory file is
always returned as zero!  No big deal though, you know you have at least
one cluster to work with and when you find a directory entry that is all
zeroes that is the end of the file.  So I just reset the size to
something large and write my code to detect end of file by looking at
the values in each directory entry.  I wrote my own directory
alphabetizer once, so it can be done fairly easiely.
-- 
Timothy Lange / PC Learning Resource Center / Mathmatical Sciences Bldg.
Purdue University Computing Center / West Lafayette, IN  47907
317-494-1787 / tim@j.cc.purdue.edu