From: Rob Pa <robp07@...>
Date: 2011-03-15T04:11:27+09:00
Subject: Splitting up and Reassembling A File

Hi,

I was wondering if you possibly help?

I am looking to split up a file, say an image file, and then at a later
date reassemble all of the pieces of this split file to recreate the
image.

I have implemented this so far;

file = File.open("image.jpg","rb"){|f|f.read}
i = 1
file.bytes.each_slice(10000) do |slice|
  new_file = File.new("file_#{i}.txt", "w+")
  new_file.puts(slice.pack('C*')))
  i = i + 1
end

I think this is the right logic to split up a file, storing the bytes
into a text file name file_1.txt, file_2.txt etc based on the size of
the file.

To recreate the file I am thinking of doing something along the lines
of;

new_file = File.new("image_recreated.jpg", "wb+")

#for each split up file do |n|
  file = File.open("file_#{n}.txt","rb"){|f|f.read}
  new_file.puts(file)
end

When testing it, the new image_recreated file gets created however is
not accessible to view.

I hope someone could possibly help.

Thanks a lot

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