Binary to hex

bin2hex.rb

#!/usr/bin/env ruby
# Author : Muhamad Fadzil Ramli
# 25/10/2014
# Binary to hexcode

# read bin file
fp = File.open(ARGV[0],"rb")

# read and convert to hex format
def readfile(fp)
  file_data = fp.read.each_byte.map { |b| "%02x" % b }
  return file_data
end

# add '\x' infront
def to_hex(data)

  array = []
  data.map do |byte|
    array << '\x' + byte
  end

  return array

end

# format the output to ruby style
def format(data)

  lines = []
  data.each_slice(10) do |array|
      lines << array.join
    end

  out = []
  res = lines.map do |line|
    if line != lines.last
      out << "\"" + line + "\" +\n"
    else
      out << "\"" + line + "\"\n"
    end
  end

  return out

end

puts format(to_hex(readfile(fp)))
puts ""