Path: utzoo!utgpu!watserv1!maytag!xenitec!tirith!ggk
From: ggk@tirith.UUCP (Gregory Kritsch)
Message-ID: <ggk.657252410@tirith.UUCP>
Date: 30 Oct 20 02:06:50 
Newsgroups: comp.sys.amiga.tech
Subject: Re:  AmigaDOS questions!!
In-Reply-To: new@ee.udel.edu (Darren New)
References: <34801@nigel.ee.udel.edu>
	<1990Oct11.212541.18365@hoss.unl.edu>

new@ee.udel.edu (Darren New) writes:
>In article <oliphant.4664@telepro.UUCP> oliphant@telepro.UUCP (Mike Oliphant) writes:
>>What is the "accepted" way of scanning through a directory using Examine(),
>>ExNext() while deleting the files as you go?  Is there an alternative to
>>having to restart the scan each time you delete a file?

>Just as a guess, I would say the easiest way would probably be to allocate
>memory and hold the names of the files you want to delete all at once. 
>If you run out of memory, delete those files and restart the scan. - Darren

I've found that double buffering works rather well:

oldfib = NULL;
while (ExNext(lk, fib)) {
	if (oldfib) remove(oldfib->fib_Filename);
	else oldfib = malloc(sizeof(struct FileInfoBlock);
	CopyMemQuick(fib,oldfib,sizeof(struct FileInfoBlock);
}
remove(oldfib->fib_FileName);

You have to do the copy, since you must use the same FileInfoBlock with
ExNext (and despite Transactor's claim that only the fib_Key field must
be preserved, the AmigaDOS manual states the entire structure must be
preserved).

>--- Darren New --- Grad Student --- CIS --- Univ. of Delaware ---
--
  Gregory Kritsch                          | University of Waterloo
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    UUCP:  ggk@tirith.UUCP                 |--------------------------
           ...!watmath!xenitec!tirith!ggk  | Amiga Fanatic