Class: Merger

Inherits:
Object
  • Object
show all
Defined in:
lib/nugen_barcode_splitter/merger.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(fwd, rev, outdir, number, barcodes) ⇒ Merger

Returns a new instance of Merger.



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# File 'lib/nugen_barcode_splitter/merger.rb', line 4

def initialize(fwd,rev,outdir,number,barcodes)
  # get sampleID
  @sample_ids = []
  i = 0
  File.open(barcodes).each do |line|
    next if line.include?("#")
    line = line.split(" ")
    @sample_ids[i] = line[0]
    i += 1
  end
  @fwd = fwd
  @rev = rev
  @outdir = outdir
  @number = number
end

Instance Attribute Details

#sample_ids ⇒ Object

Returns the value of attribute sample_ids.



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# File 'lib/nugen_barcode_splitter/merger.rb', line 20

def sample_ids
  @sample_ids
end

Instance Method Details

#make_stats(statistics) ⇒ Object 



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# File 'lib/nugen_barcode_splitter/merger.rb', line 83

def make_stats(statistics)
  stats = ""
  @sample_ids.each_with_index do |id,i|
    stats += id +"\t" + statistics[i].to_s + "\n"
  end
  stats += "unmatched\t" + statistics[-2].to_s + "\n"
  stats += "total\t" + statistics[-1].to_s + "\n"
end

#merge ⇒ Object 



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# File 'lib/nugen_barcode_splitter/merger.rb', line 22

def merge()
  statistics = Array.new(@sample_ids.length()+2,0)
  fwd_file = Zlib::GzipReader.open(@fwd)
  rev_file = Zlib::GzipReader.open(@rev)
  fwd_splitted_files = []
  fwd_out_files = []
  rev_out_files = []
  fwd_out_unmatched = File.open(@outdir+"/R1_#{@number}.unmatched.updated.fq",'w')
  rev_out_unmatched = File.open(@outdir+"/R2_#{@number}.unmatched.updated.fq",'w')

  @sample_ids.each_with_index do |sample_id, i|
    fwd_splitted_files[i] = File.open(@outdir+"/R1_#{@number}.#{sample_id}.fq")
    fwd_out_files[i] = File.open(@outdir+"/R1_#{@number}.#{sample_id}.updated.fq",'w')
    rev_out_files[i] = File.open(@outdir+"/R2_#{@number}.#{sample_id}.updated.fq",'w')
  end

  fwd_file.each do |fwd_line|
    statistics[-1] += 1
    rev_line = rev_file.readline()
    rev_name = rev_line.split(" ")
    fwd_name = fwd_line.split(" ")
    marker = true

    @sample_ids.each_with_index do |sample_id, i|
      if !fwd_splitted_files[i].eof? && marker
        compare_line_fwd = fwd_splitted_files[i].readline()
        name_compare_fwd = compare_line_fwd.split(" ")
        if fwd_name[0] == name_compare_fwd[0]
          marker = false
          statistics[i] += 1
          fwd_out_files[i].write(fwd_line)
          rev_out_files[i].write(rev_line)
          for k in 1..3
            fwd_file.readline()
            compare_line_fwd = fwd_splitted_files[i].readline()
            fwd_out_files[i].write(compare_line_fwd.gsub(/^[A-Z]{4}/,"NNNN")) if k == 1
            fwd_out_files[i].write(compare_line_fwd) if k == 2
            fwd_out_files[i].write(compare_line_fwd.gsub(/^[\S]{4}/,"@@@@")) if k == 3
            rev_out_files[i].write(rev_file.readline())
          end
          fwd_file.lineno = fwd_file.lineno - 1
          rev_file.lineno = rev_file.lineno - 1
        else
          fwd_splitted_files[i].pos = fwd_splitted_files[i].pos - compare_line_fwd.length()
        end
      end
    end

    if marker
      statistics[-2] += 1
      fwd_out_unmatched.write(fwd_line)
      rev_out_unmatched.write(rev_line)
      for k in 1..3
        rev_out_unmatched.write(rev_file.readline())
        fwd_out_unmatched.write(fwd_file.readline())
      end
    end
  end
  stats = make_stats(statistics)
end