Class: Af::OptionParser::Columnizer

Inherits:
Object
  • Object
show all
Defined in:
lib/fiksu-af/option_parser/columnizer.rb

Instance Method Summary collapse

Instance Method Details

#columnized(rows, options = {}) ⇒ Object

Converts an array of arrays into a single array of columnized strings.

Arguments

* rows - arrays to convert
* options - hash of options, includes:
  :max_width => <integer max width of columns>



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# File 'lib/fiksu-af/option_parser/columnizer.rb', line 23

def columnized(rows, options = {})
  sized = {}
  rows.each do |row|
    row.each_index do |i|
      value = row[i]
      sized[i] = [sized[i].to_i, value.to_s.length].max
      sized[i] = [options[:max_width], sized[i].to_i].min if options[:max_width]
    end
  end

  return rows.map { |row| "    " + columnized_row(row, sized).rstrip }
end

#columnized_row(fields, sized) ⇒ Object

Convert an array into a single string, where each item consumes a static number of characters. Long fields are truncated and small ones are padded.

Arguments

* fields - array of objects that respond to "to_s"
* sized - character count for each field in the new string????



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# File 'lib/fiksu-af/option_parser/columnizer.rb', line 9

def columnized_row(fields, sized)
  r = []
  fields.each_with_index do |f, i|
    r << sprintf("%0-#{sized[i]}s", f.to_s.gsub(/\\n\\r/, '').slice(0, sized[i]))
  end
  return r.join('   ')
end