Date: Mon, 2 Dec 1996 16:57:36 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: "Rodger D. Ballard Jr." <rballard AT spiritone DOT com>
cc: djgpp AT delorie DOT com
Subject: Re: DJGPP w/long file name support
In-Reply-To: <199612020659.WAA11416@ridge.spiritone.com>
Message-ID: <Pine.SUN.3.91.961202164956.427B-100000@is>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII


On Sun, 1 Dec 1996, Rodger D. Ballard Jr. wrote:

> I am sorry for not being too clear on that one. This question pertains more
> towards C and for instance if I wanted to make a program that supports long
> file name support under a Win95 dos box. I was curious if anyone knew how
> to implement this in a seperate program via DJGPP C code (I have a feeling
> it would involve inline assembler, something I have never touched under
> DJ.)

Unless I misunderstand you completely, I already answered this: *every*
program compiled with DJGPP supports long filenames when you run it from
Windows 95 DOS box.  This includes programs compiled by you, not only
those that come pre-built with the DJGPP distribution.  You don't have to
do anything special to get this support: it's built into the DJGPP runtime
library functions which your program calls.  For instance, you can say 
this in your program:

	FILE *fp = fopen ("this_is_the_file_name.txt", "r");

When this is run on Windows 95, the function `fopen' will see that long
filenames are supported on this platform and will then use the long
filename version of DOS OpenFile function.  This is all entirely
automatic. 

> A perfect example is this:
> 
> Construct a program that will add line numbers and colons in front of every
> line in a specified file that supports long file names:
> 
> A sample run might be:
> 
> disptext this_is_the_file_name.txt

Write your `disptext' in C, compile it with DJGPP, and you will get a 
program that can be run like that.