comparing xml files with xmllint and diff for specific use case

gistfile1.rb

# requires xmllint and diff to be in the PATH

class Test

  BPELVAL_DIR = "c:/projects/bpelval-proj/tool/Testcases"
  BETSY_DIR = "c:/projects/betsy/src/main/tests/language-features"

  def self.compute_wsdl_diffs
    main_wsdl = "#{BETSY_DIR}/TestInterface.wsdl"
    partner_wsdl = "#{BETSY_DIR}/TestPartner.wsdl"

    Dir.glob("#{BPELVAL_DIR}/**/*.wsdl").each do |file|
      name = File.read(file).scan(/name="([^"\\.]*)"/)[0][0]
      if name == "TestInterface"
        wsdl = main_wsdl
      elsif name == "TestPartner"
        wsdl = partner_wsdl
      else
        raise "should not happen"
      end
      puts "Comparing #{wsdl} with #{file}"
      dirname = File.basename(File.dirname(file))
      filename = File.basename(file)
      `xmllint --c14n #{wsdl} > origin.xml`
      `xmllint --c14n #{file} > current.xml`
      `diff --ignore-space-change -U9999999 --ignore-blank-lines origin.xml current.xml > diffs/#{dirname}_WSDL_#{filename}.diff`
    end
  end

  def self.compute_bpel_diffs
    Dir.glob("#{BPELVAL_DIR}/**/*.bpel").each do |file|
      name = File.read(file).scan(/name="([^"\\.]*)"/)[0][0]
      origin = Dir.glob("#{BETSY_DIR}/**/#{name}.bpel")[0]

      unless origin
        puts "ERROR - Origin could not be found for #{name}"
        next
      end

      dirname = File.basename(File.dirname(file))
      filename = File.basename(file)

      puts "Comparing #{origin} with #{file}"
      `xmllint --c14n #{origin} > origin.xml`
      `xmllint --c14n #{file} > current.xml`
      `diff --ignore-space-change -U9999999 --ignore-blank-lines origin.xml current.xml > diffs/#{dirname}_BPEL_#{filename}.diff`
    end
  end
end

Dir.mkdir "diffs" unless Dir.exists? "diffs"
Test.compute_wsdl_diffs
puts "------"
Test.compute_bpel_diffs