dcp-converter.rb

#!/usr/bin/env ruby

# Requires that you have ./bin/dcpTool from https://sourceforge.net/projects/dcptool/

require 'rubygems'
require 'bundler/setup'
require 'nokogiri'

input_camera_model  = ARGV[0] || "LEICA Q (Typ 116)"
output_camera_model = ARGV[1] || "LEICA M10"

input_dir  = ARGV[2] || "./input"
output_dir = ARGV[3] || "./output"

def convert_profile_name(profile_name, input_camera_model, output_camera_model)
  File.basename(profile_name.gsub(/#{input_camera_model.gsub(/\(/, "\\(").gsub(/\)/, "\\)")}/, output_camera_model), ".dcp")
end

def replace_camera_model(xml_profile_filename, output_camera_model)
  profile_doc = Nokogiri::XML(File.read(xml_profile_filename))
  profile_doc.xpath('//UniqueCameraModelRestriction').first.content = output_camera_model  

  File.open(xml_profile_filename, "w+") { |file| file.write(profile_doc.to_xml) }
end

Dir.entries(input_dir).reject { |file| file =~ /^(\.|\.\.)$/ }.each do |existing_profile|
  converted_profile = convert_profile_name(existing_profile, input_camera_model, output_camera_model)
  existing_dcp_filename  = File.join(input_dir, existing_profile)
  xml_filename = "#{File.join(output_dir, converted_profile)}.xml"

  decompile_command = "./bin/dcpTool -d '#{existing_dcp_filename}' '#{xml_filename}'"

  puts "Decompiling #{existing_dcp_filename} into XML"
  `#{decompile_command}`

  puts "Replacing camera model: #{input_camera_model} -> #{output_camera_model}"
  replace_camera_model(xml_filename, output_camera_model)


  converted_dcp_filename = "#{File.join(output_dir, converted_profile)}.dcp"
  recompile_command = "./bin/dcpTool -c '#{xml_filename}' '#{converted_dcp_filename}'"

  puts "Recompiling XML into #{converted_dcp_filename}"
  `#{recompile_command}`

  File.delete(xml_filename)

  puts
end