Class: SplitCSV::Splitter

Inherits:
Object
  • Object
show all
Defined in:
lib/splitcsv/splitter.rb

Instance Method Summary collapse

Instance Method Details

#split(file, maxlength = 5000, separator = ';') ⇒ Object 



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# File 'lib/splitcsv/splitter.rb', line 5

def split(file, maxlength=5000, separator=';')
  csv_basename = File.basename(file, ".*")
  csv_path     = File.expand_path(file)
  csv_dir      = File.dirname(csv_path)

  csv_obj      = CSV.open(csv_path, :row_sep => :auto, :col_sep => separator)
  csv_length   = csv_obj.readlines.size - 1;

  # Opnieuw inlezen zodat readline pointer terug aan 0 staat. Na gebruiken van
  # csv_obj.readlines.size werd "csv_obj" al eens volledig doorlopen
  csv_obj      = CSV.open(csv_path, :row_sep => :auto, :col_sep => separator)
  firstline    = csv_obj.readline

  for i in 0..((csv_length / maxlength.to_i).ceil) do
    CSV.open("#{csv_dir}/#{csv_basename}_#{i+1}.csv", 'w', :row_sep => :auto, :col_sep => separator) do |csv|
      csv << firstline

      for j in 1..maxlength.to_i do
        if (line = csv_obj.readline) != nil
          csv << line
        end
      end
    end
  end
end