Re: Interactive Console Program with Tab-Completion

In article <[e-mail]>,
Mauricio Fern疣dez  <[e-mail]> wrote:
> But bash (and probably tcsh too) uses readline...

Nope, tcsh being a BSD licensed program doesn't use the GPL readline. It
has its own readline-like code (which existed before readline BTW).

Zsh has also its own code for this.

To stay in line with the original post, readline is very easy to use in
Ruby:

-=-=-=-
#! /usr/bin/env ruby
#
# $Id: //depot/src/ruby/dices.rb#1 $

require "readline"

class Fixnum
  def dice(n = 6)
    res = 0
    print "  "
    self.times {
      dice = rand(n) + 1
      print dice.to_s + " "
      res += dice 
    }
    puts ""
    return res
  end
end

class String
  def has_mod?
    if self =~ /[-+](\d+)$/ then
      mod = $1.to_i
      puts "  Bonus => #{mod}"
      return mod
    else
      return 0
    end
  end
end

if $0 == __FILE__ then
  srand 
  while true do
    input = Readline::readline("Dice> ", true)
    if input then
      input.chomp!
      input.gsub!(/\s*/, '')
      bonus = 0
      case input
      when /q/i
        break
      when /^(\d+)d(\d+)/
        nb = $1.to_i
        size = $2.to_i
        res = nb.dice(size)
        mod = input.has_mod?
        puts "  #{nb} x D#{size} => #{res + mod} (#{res})"
      when /^d(\d+)/
        size = $1.to_i
        res = 1.dice(size)
        if res == 1 then
          puts "  **FUMBLE**"
        elsif res == size
          puts " **Natural #{size}**"
        else
          mod = input.has_mod?
          puts "  D#{size} => #{res + mod} (#{res})"
        end
      end
    else
      puts ""
      break
    end
  end
end
-=-=-=-
-- 
Ollivier ROBERT   -=- Eurocontrol EEC/ITM -=-   [e-mail]
Usenet Canal Historique                   FreeBSD: The Power to Serve!