Sender: rich AT phekda DOT freeserve DOT co DOT uk
Message-ID: <3AA25EB9.FC18DCD2@phekda.freeserve.co.uk>
Date: Sun, 04 Mar 2001 15:26:49 +0000
From: Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk>
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To: djgpp-workers AT delorie DOT com
Subject: Re: Fileutils 4.0 port and ginstall
References: <3AA2451A DOT 24DE1704 AT phekda DOT freeserve DOT co DOT uk>
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Reply-To: djgpp-workers AT delorie DOT com

Hello.

Richard Dawe wrote:
> I am unsure how to decide that a file is a DOS batch file. The patches
> to ginstall for DJGPP currently modify the target filename, depending on
> the source file's file format. Here's some pseudo-code:
> 
> if (_check_v2_prog returns valid data) {
>   if (unstubbed COFF) {
>     stubify
>     append .exe to target filename
>   } else if (stubbed COFF) {
>     append .exe to target filename
> } else {
>   if (file header contains "MZ") {
>     /* FIXME: Distinguish between .exe and .com */
>     append .exe to target filename
>   }
> }

I missed out an outer if condition - that the from file has no .com or
.exe extension. I think I've been thinking about this the wrong way.
Clearly ginstall needs to handle:

    ginstall file.$(EXEEXT) a

by copying to a.$(EXEEXT) instead, where $(EXEEXT) is an executable
extension.

Also, so 'a' is not a batch file even if 'a' contains batch file commands,
because it does not have a .bat extension. So my original question is
actually bogus in the context that I meant it (my fault).

OK, now I can handle the other cases, where source has an executable
extension, but target does not. Tim, Martin, thanks for the help.

Bye, Rich =]

-- 
Richard Dawe <richdawe AT bigfoot DOT com> http://www.bigfoot.com/~richdawe/ 

"The soul is the mirror of an indestructible universe."
--- Gottfried W. Leibniz