Class: Array

Inherits:
Object show all
Defined in:
lib/muflax/array.rb,
lib/muflax/align.rb,
lib/muflax/blank.rb,
lib/muflax/deep_dup.rb

Overview

Copyright Steffie Dorn <[email protected]>, 2013 License: GNU GPL 3 <www.gnu.org/copyleft/gpl.html>

Instance Method Summary collapse

Instance Method Details

#align(str = "\t", alignment: :left, force: false, ansi: false, is_split: false) ⇒ Object 



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# File 'lib/muflax/align.rb', line 40

def align str="\t", alignment: :left, force: false, ansi: false, is_split: false
  just_function = case alignment
                  when :left  	; Proc.new{|e,l,_c| e.ljust 	l	}
                  when :right 	; Proc.new{|e,l,_c| e.rjust 	l	}
                  when :center	; Proc.new{|e,l,_c| e.center	l	}
                  when Proc   	; alignment
                  else
                    raise "invalid alignment: #{alignment}"
                  end

  # split all lines
  lines  	= []
  columns	= 0
  rx     	= force ? /[ ]*#{str}/ : str

  self.each do |line|
    line   	= line.split(rx, -1) unless is_split
    lines  	<< line
    columns	= [columns, line.size].max
  end

  columns -= 1 # very last column is always un-aligned

  columns.times.map do |column|
    # calculate column width
    wants    	= []
    new_block	= false
    width    	= 0
    first    	= 0
    max_cols 	= column + 1

    lines.each.with_index do |line, cur|
      if new_block
        new_block	= false
        first    	= cur
        width    	= 0
      end

      # treat last column and missing columns as useless
      w = line.size == max_cols ? nil : line[column]&.size

      if w.nil? # block done
        wants    	<< [first, cur, width] unless width == 0
        new_block	= true
      else
        width = [width, w].max
      end
    end
    wants << [first, lines.size, width] unless new_block or width == 0 # last block

    # justify column
    wants.each do |from, to, width|
      lines[from...to].each do |line|
        if elem = line[column]
          # take into account how much the element is internally longer than it appears
          elem_diff   	= ansi ? elem.to_s.length - elem.str_length : 0
          line[column]	= just_function.call(elem, width + elem_diff, column)
        end
      end
    end
  end

  lines.map{|l| l.join(str)}
end

#deep_dup ⇒ Object 



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# File 'lib/muflax/deep_dup.rb', line 13

def deep_dup
  map(&:deep_dup)
end

#fifth ⇒ Object 



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# File 'lib/muflax/array.rb', line 22

def fifth 	; self[4]	; end

#fourth ⇒ Object 



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# File 'lib/muflax/array.rb', line 21

def fourth	; self[3]	; end

#rfind(*arg, &block) ⇒ Object 



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# File 'lib/muflax/array.rb', line 24

def rfind *arg, &block
  i = self.rindex(*arg, &block)
  i.nil? ? nil : self[i]
end

#second ⇒ Object

silly accessors



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# File 'lib/muflax/array.rb', line 19

def second	; self[1]	; end

#third ⇒ Object 



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# File 'lib/muflax/array.rb', line 20

def third 	; self[2]	; end

#triangle ⇒ Object 



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# File 'lib/muflax/array.rb', line 7

def triangle
  return to_enum(:triangle) unless block_given?

  self.each.with_index do |a, ai|
    self.each.with_index do |b, bi|
      next if bi < ai
      yield [a, b]
    end
  end
end