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#!/usr/bin/env ruby
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# -*- coding: binary -*-
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str = '# -*- coding: binary -*-'
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fname = ARGV.shift || exit
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data  = ''
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done  = nil
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fd = ::File.open(fname, "rb")
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fd.each_line do |line|
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  if line =~ /^#.*coding:.*/
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    done = true
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  end
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 	if not done
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    unless line =~ /^#\!.*env ruby/
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      data << str + "\n"
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      done = true
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    end
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  end
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  data << line
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end
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fd.close
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fd = ::File.open(fname, "wb")
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fd.write(data)
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fd.close
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