From: Phlip <phlip2005@...>
Date: 2009-06-03T02:45:09+09:00
Subject: Re: convert 2D array to cute text table with | pipes ?

Brian Candler wrote:

> Have a look at Ruport's text table rendering code

txbut - I should'a made clear I have no mandate to install a whole new library. 
Does it contain a snippet like this?

   def row_to_pipes(row, widths)
     widths = widths.dup

     return ' ' + row.map{|c|
           case c
             when Fixnum
               c.to_s.rjust(widths.shift)
             else
               c.to_s.ljust(widths.shift)
           end
         }.join(' | ') + ' '
   end

   def table_to_pipes(table)
     widths = (0 ... table.first.length).map do |x|
                table.sort_by{|q| q[x].to_s.length }.last[x].to_s.length
              end

     table.map{|r| row_to_pipes(r, widths) }.join("\n")
   end

   test 'array to pipes' do
     assert_equal ' a | b  | c ', row_to_pipes(%w(a b c), [1, 2, 1])
   end

   test 'table to pipes' do
     assert_equal " a | bb | c \n d |  2 | f ",
       table_to_pipes([%w(a bb c), ['d', 2, 'f']])
   end

Understand I would never write code this sloppy in production. Really! I'm just 
letting it out here so if anyone can think of a way to refactor it and DRY it 
up, we could make a little good-code experiment out of it.

It provides the effect I'm after:

     puts table_to_pipes( [['__concept__', '__frobs', '__zones'],
                           [ 'Unruly Pygmy',      6,     10001 ],
                           [ 'Renonymize',        4,      9999 ],
                           [ 'Opramatic',         4,     10001 ],
                           [ 'El Pollo Psycho',   4,     10002 ],
                           [ 'Mouse Guard',       4,     10003 ],
                           [ 'layuhponit',        4,     10004 ]] )

  __concept__     | __frobs | __zones
  Unruly Pygmy    |       6 |   10001
  Renonymize      |       4 |    9999
  Opramatic       |       4 |   10001
  El Pollo Psycho |       4 |   10002
  Mouse Guard     |       4 |   10003
  layuhponit      |       4 |   10004

-- 
   Phlip