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From: ks26+@andrew.cmu.edu (Kenneth Sykes)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Turbo C file size routine
Message-ID: <EVXCoLy00XoH8Kk0Bh@andrew.cmu.edu>
Date: Mon, 2-Nov-87 15:37:43 EST
Article-I.D.: andrew.EVXCoLy00XoH8Kk0Bh
Posted: Mon Nov  2 15:37:43 1987
Date-Received: Fri, 6-Nov-87 04:37:14 EST
Organization: Carnegie Mellon University
Lines: 37
In-Reply-To: <2475@masscomp.UUCP>


>I'm looking for a way to determine the size of a text file from within Turbo
>C. Determining the size of a binary file is trivial, using the stat call,
>but if I open the file in text mode, stat returns the same value, which
>is now incorrect (ie. CR/LF count as two characters in the count, although
>are read as a single newline character. So far, I've been opening the file
>in text mode and running the following loop, but this is slow:
>
>	i=0;
>	while (getc(fp) >= 0) i++;
>
>Is there a faster way to do this?

Assuming you want the file size as indicated by the DIR command, there
 are two approaches you can take:

1)  If you don't mind opening the file, then use the following code:
             #include <io.h>

               int fh;
               fh = _open(file, 0);
               <the file size> =  filesize(fh);
               _close(fh);

2) Otherwise, use the findfirst call:
            #include <dir.h>

            struct ffblk blk;

             if ( findfirst(file, <attributes>, &blk) )
		<file not found>;
             else
                      <the file size> = blk.ff_fsize;

Since I am pulling the syntax off the top of my head, check the Reference
manual to make sure I have the correct calling sequence, field names, etc.

-- Ken Sykes