Join Split File Algorithm

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Hi,

I would like to write a simple program to join and split files ( for example with extension .001). I know that there are programs available but I'm interested in knowing the algorithms as well as writing an actual program myself.

Thanks for your help

Posted 8-Feb-12 3:51am

tungnk1993

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tungnk1993 8-Feb-12 10:28am

So far I have understood the basics, are there any possible optimizations to improve the algorithms/processes ?

Christian Graus 8-Feb-12 11:19am

IT's a really basic thing. There's no algorithm, just chunks of bytes to be read and written

2 solutions

Solution 1

A file is a stream of bytes. If you want to split or join them, you just write the appropriate data to the file system. If you want to join or split specific file formats, so the files still work, then it might be more complex.

Posted 8-Feb-12 3:55am

Christian Graus

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CPallini · Accepted Answer · 2012-02-08T04:02:00

Well, the algorithm is simple: open for reading the original file, read CHUNK (CHUNK is your magic predefined constant) bytes and write to first output file, e.g. 'out.001'. Repeat such operation until you cannot read more bytes from the original file.
For joining just do the opposite (note: you have an ordered list of file names).