From:	"John M. Aldrich" <fighteer AT cs DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: File Paths and Directories
Date:	Wed, 30 Jul 1997 20:42:24 +0000
Organization:	Two pounds of chaos and a pinch of salt
Lines:	43
Message-ID:	<33DFA730.2908@cs.com>
References:	<5rllpr$5vc$1 AT excalibur DOT flash DOT net>
Reply-To:	fighteer AT cs DOT com
NNTP-Posting-Host:	ppp106.cs.com
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Joshua Eckstein wrote:
> 
> I'm trying to find out how to specify a filename as not to be
> drive/directory specific. In other words, if someone puts the executable in
> [xfolder] and I have established a branch directory for data, it will look
> in [xfolder]\data. Like so:
> 
> LoadPic ("\data\example.pic", ...);

Omit the beginning slash.  This makes the path relative to the current
working directory.  If you're looking for a data file that will always
be in a subdirectory of your program's installation directory, then you
can find the correct drive/directory by examining argv[0], which should
contain the full pathname of the executable.

Example:

#include <stdio.h>
#include <dir.h>

int main( int argc, char *argv[] )
{
    char progdir[FILENAME_MAX], filename[FILENAME_MAX];
    char drive[MAXDRIVE], dir[MAXDIR], name[MAXFILE], ext[MAXEXT];

    fnsplit( argv[0], drive, dir, name, ext );
    sprintf( progdir, "%s%s", drive, dir );

    /* ... */

    sprintf( filename, "%s%s", progdir, "example.pic" );
    LoadPic( filename, /* ... */ );

    /* ... */
    return 0;
}

-- 
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| John M. Aldrich, aka Fighteer I |     mailto:fighteer AT cs DOT com      |
| Proud owner of what might one   |   http://www.cs.com/fighteer    |
| day be a spectacular MUD...     | Plan: To make Bill Gates suffer |
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