From:	pjfarley AT dorsai DOT org (Peter J. Farley III)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: file_exists()
Date:	Fri, 22 Aug 1997 23:48:33 GMT
Organization:	None
Lines:	26
Message-ID:	<33fe2408.3775959@snews.zippo.com>
References:	<33fdf19a DOT 5293195 AT news DOT telepac DOT pt>
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Marco Monteiro wrote:

>Hello,
>
>	how can i inspect if a file exists?
>	I'm using the function following function; is there a better one?
>
Marco,

Perusing the DJGPP libc sources, it seems to me that access(filename,
R_OK) will give you the results that you want, without the overhead of
an fopen and an fclose.  Just call:

access("filename.ext", R_OK)

Zero return value means the file is available for reading, which
implies that it actually exists.  So this code should work:

if (access("filename.ext", R_OK)) {
	fprint("FILE %s does not exist\n", "filename.ext");
	exit(1);
}
/* From here on we know the file exists... */

----------------------------------------------------
Peter J. Farley III (pjfarley AT dorsai DOT org)

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