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apeiros/reverse_read.rb Secret

Last active October 2, 2018 09:31
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reverse_read.rb
def testing_seek(filename)
File.open(filename, 'rb') do |fd|
pos = 0
buffer = "".b
until fd.pos.zero? || buffer[0, 3] == '---'
pos -= 1
fd.seek(pos, IO::SEEK_END)
buffer = fd.read(1) + buffer
end
buffer[0, 3] == '---' ? buffer : nil
end
end
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