Split File in Chunks

[torels]

Hi there

The title of the topic says it all... how do I split a file in a number of smaller files (of hte same size) ?

thanks in advance

[rudi]

Very fast and free is the tool ChainSaw.exe.

Files > 4Gig are fine.

Simply drag/drop the files on the Icon. Maybe it can use command line params, pls check out yourself.

a merge tools is also provided.

Regards, Rudi.

[monoceres]

I found an UDF

http://www.autoitscript.com/forum/index.ph...63&hl=Split

Edited June 18, 2008 by monoceres

[Kip]

expandcollapse popup

$B = 0
$KB = 1
$MB = 2
$GB = 3
$TB = 4


$iPartSize = Lenght(1,$MB)

$sPath = FileOpenDialog("Open file to split",@DesktopDir,"All files (*.*)")

If @error Then Exit

$hFile = FileOpen($sPath,16)
$sRead = FileRead($hFile)
FileClose($hFile)

$iTotalLenght = BinaryLen($sRead)

$iPartCount = $iTotalLenght/$iPartSize

$sPathSplit = StringSplit($sPath,"\")

DirCreate($sPath&".part")

For $i = 1 to Ceiling($iPartCount)
    
    $hPartFile = FileOpen($sPath&".part\"&$sPathSplit[$sPathSplit[0]]&"."&$i&".part",16+2)
    FileWrite($hPartFile, BinaryMid($sRead,($i-1)*$iPartSize+1,$iPartSize))
    FileClose($hPartFile)
    
Next


Func Lenght($iLen, $iType)
    Return 1024^$iType * $iLen
EndFunc

[Andreik]

expandcollapse popup

$B = 0
$KB = 1
$MB = 2
$GB = 3
$TB = 4


$iPartSize = Lenght(1,$MB)

$sPath = FileOpenDialog("Open file to split",@DesktopDir,"All files (*.*)")

If @error Then Exit

$hFile = FileOpen($sPath,16)
$sRead = FileRead($hFile)
FileClose($hFile)

$iTotalLenght = BinaryLen($sRead)

$iPartCount = $iTotalLenght/$iPartSize

$sPathSplit = StringSplit($sPath,"\")

DirCreate($sPath&".part")

For $i = 1 to Ceiling($iPartCount)
    
    $hPartFile = FileOpen($sPath&".part\"&$sPathSplit[$sPathSplit[0]]&"."&$i&".part",16+2)
    FileWrite($hPartFile, BinaryMid($sRead,($i-1)*$iPartSize+1,$iPartSize))
    FileClose($hPartFile)
    
Next


Func Lenght($iLen, $iType)
    Return 1024^$iType * $iLen
EndFunc

If I want to create file again from splitted files, what should I do?

Thanks in advance!

[Xandl]

Hello,

I know that writing own scripts is fun and educational,

but if you need to split laaarge files, you could use the winrar

command line tool to split/rejoin these files.

It can be found at http://www.win-rar.com/download.html.

Here is an example batch file to split files with rar.exe:

expandcollapse popup

@echo off
:: --------------------------------------------------------------------------
:: file path\name to split
set file=%1
:: filename only, dont touch
set fName=%~n1
:: output directory, path to put rar split files
set out=.\out
:: rar binary
set rar=.\bin\rar.exe
:: output split size, in rar size format
set size=32000k
::set size=12000k
:: 0-5, 0=store
set compression=0
: ---------------------------------------------------------------------------
if "%file%"=="" goto noparam
if not exist %file% goto nofile

call :log start split on file %~n1, size: %size%
%rar% a -v%size% -m%compression% %out%\%fName% %file%
call :log done split file %~n1
goto end


:noparam
call :log Error: no path\file name parameter given to splice
goto end

:nofile
call :log Error: file %file% not found
goto end

:log
echo %DATE% %TIME% - %*
goto :EOF

:end

Usage: scp_rarSplit.cmd drive:\path\to\bigfile.ext

The split files go to %out%, configured in the batch file.

Just look at the first few lines in the batch, to configure it

for your purposes.

ciao

Xandl