Class: MS::Txml_file_writer

Inherits:
Object
  • Object
show all
Defined in:
lib/ms/tr_file_writer.rb

Class Method Summary collapse

Class Method Details

.write(db, file_name, opts) ⇒ Object



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# File 'lib/ms/tr_file_writer.rb', line 5

def self.write(db,file_name,opts)
  prog = Progress.new("Writing xml:")
  file = File.open("#{file_name}_truth.xml","w")
  peps = db.execute "SELECT * FROM peptides"

  file.puts "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
  file.puts "<simulated_peptides>"
  file.puts "<simulator_options>\n"
  opts.each do |k,v|
    file.puts "\t#{k}=#{v},"
  end
  file.puts "</simulator_options>\n"
  total = peps.size.to_f
  
  num = 0
  step = total/100.0
  
  peps.each do |pep|
    k = pep[0]
    if k > step * (num + 1)
      num = (((k/total)*100).to_i)
      prog.update(num)
    end
    sequence = pep[1]
    charge = pep[3]
    cents = db.execute "SELECT * FROM spectra WHERE pep_id=#{k}"
    
    file.puts "\t<simulated_peptide sequence=\"#{sequence}\" charge=\"#{charge.round}\">"
    tags = ""
    tags<<"\t\t<centroids>\n"
    centroids = ""
    cents.each do |cent|
      centroids<<"\t\t\tcent_id=#{cent[0]},pep_id=#{cent[1]},rt=#{cent[2]},mz=#{cent[3]},int=#{cent[4]},merge_id=#{cent[5]}\n"
    end
    tags<<centroids
    tags<<"\t\t</centroids>\n"
    file<<tags
    file.puts "\t</simulated_peptide>"
  end
  file.puts "</simulated_peptides>"
  file.close
  prog.finish!
end