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#!/usr/bin/env ruby
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#
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# This script converts a PDF file to an equivalent XML Data Package file,
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# which can be opened by Adobe Reader as well and typically escapes AV
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# detection better than a "normal" PDF
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#
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# Alexander 'alech' Klink, 2011
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# public domain / CC-0
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#
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begin
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require 'base64'
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pdf = ARGV.shift
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xdp = ARGV.shift
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if ! xdp then
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  STDERR.puts "    Usage: #{$0} input.pdf output.xdp"
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  exit 1
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end
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pdf_content = begin
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  File.read(pdf)
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rescue
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  STDERR.puts "Could not read input PDF file: #{$!}"
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  exit 2
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end
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xdp_out = begin
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  open xdp, 'w'
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rescue
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  STDERR.puts "Could not open output XDP file: #{$!}"
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  exit 3
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end
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xdp_out.print '<?xml version="1.0"?><?xfa ?><xdp:xdp xmlns:xdp="http://ns.adobe.com/xdp/"><pdf xmlns="http://ns.adobe.com/xdp/pdf/"><document><chunk>'
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xdp_out.print Base64.encode64(pdf_content)
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xdp_out.print '</chunk></document></pdf></xdp:xdp>'
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rescue SignalException => e
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  puts("Aborted! #{e}")
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end
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