Path: utzoo!attcan!uunet!lll-winken!tekbspa!optilink!cramer
From: cramer@optilink.UUCP (Clayton Cramer)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Copying very large files
Message-ID: <2658@optilink.UUCP>
Date: 24 Nov 89 19:13:39 GMT
References: <1380@ucf-cs.UCF.EDU>
Distribution: na
Organization: Optilink Corporation, Petaluma, CA
Lines: 80

In article <1380@ucf-cs.UCF.EDU>, wordproc@ucf-cs.UCF.EDU (wordproc) writes:
> 
> I have a very large file on my MSDOS 4.01 machine that I need to copy onto
> 360K diskettes and transfer onto an MSDOS 3.3 machine.
> 
> The file is an .EXE file of about a megabyte in length and is a self-extracting
> archive created with PAK.
> 
> Naturally, I cannot use 4.01's BACKUP/RESTORE to copy the file over several
> disks because 4.01's RESTORE will give an "incorrect DOS version" error when
> I try to restore the file to the MSDOS 3.3 machine's hard disk.  I presume
> that using MSDOS 3.3's BACKUP/RESTORE will fail for the same or similar
> reason.
> 
>               Marcus Clenney   ___    ___  /___  ___/ ________   / 

Try this program.  To reconstruct the files, use COPY file1+file2+file3 dest/B.

------
#include <stdio.h>
#include <malloc.h>
#include "std.h"

main(Argc, Argv)

int		Argc;
char*	Argv[];

	{
	long		BytesThisPartFile;
	long		BytesPerPart;
	int			PartNbr;
	char		OutFileName[40];
	FILE*		OutFile;
	FILE*		FileToPart;
	char*		Bytes;
	bool		MoreBytes = TRUE;
	int			BytesRead;
	
	FileToPart = fopen(Argv[1], "rb");
	sscanf(Argv[3], "%ld", &BytesPerPart);
	BytesPerPart *= 1000L;
	Bytes = malloc(1000);
	if((Bytes) && (FileToPart))
		{
		PartNbr = 0;
		sprintf(OutFileName, Argv[2], PartNbr);
		fprintf(stderr, "creating %s\n", OutFileName);
		BytesThisPartFile = 0L;
		OutFile = fopen(OutFileName, "wb");
		if(OutFile)
			{
			while(MoreBytes)
				{
				BytesRead = fread(Bytes, sizeof(char), sizeof(Bytes), 
								  FileToPart);
				fwrite(Bytes, sizeof(char), BytesRead, OutFile);
				BytesThisPartFile += sizeof(Bytes);
				if(feof(FileToPart))
					MoreBytes = FALSE;
				else if(BytesThisPartFile >= BytesPerPart)
					{
					PartNbr++;
					fclose(OutFile);
					sprintf(OutFileName, Argv[2], PartNbr);
					fprintf(stderr, "creating %s\n", OutFileName);
					BytesThisPartFile = 0L;
					OutFile = fopen(OutFileName, "wb");
					}
				}
			}
		fclose(OutFile);
		}
	}
----
-- 
Clayton E. Cramer {pyramid,pixar,tekbspa}!optilink!cramer
My definition of social justice: those who refuse to work deserve to go hungry.
===============================================================================
Disclaimer?  You must be kidding!  No company would hold opinions like mine!