Module: XMLDiff

Included in:
PEngine
Defined in:
lib/bizLogic/diff.rb

Overview

Copyright © 2007-2008 Orangery Technology Limited You can redistribute it and/or modify it under the same terms as Ruby.

Instance Method Summary collapse

Instance Method Details

#determineDiff(origImage, newImage) ⇒ Object 



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# File 'lib/bizLogic/diff.rb', line 18

def determineDiff(origImage,newImage)
  before, after, result = nil, nil, nil
  begin      
    before = Tempfile.new('iab')
    before << origImage
    before.close
    after = Tempfile.new('iab')
    after << newImage
    after.close
    result = Tempfile.new('iab')
    cmd = "#{APP_CONFIG['python_xmldiff_path']} -x #{before.path} #{after.path} > #{result.path}"
    runCommand(cmd)
    xmlDiff = result.read
    #identify only the update nodes - we do not need to know about nodes that have moved sequence
    return xmlDiff
  ensure
    before.delete unless before == nil
    after.delete unless after == nil
    result.delete unless result == nil
  end    
end

#runCommand(cmd, inp = '') ⇒ Object 



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# File 'lib/bizLogic/diff.rb', line 6

def runCommand(cmd, inp='')
  IO.popen(cmd, 'r+') do |io|
    begin
      io.write inp
      io.close_write
      return io.read
    rescue Exception => e
      e.message
    end
  end
end