Ruby Quiz: LCD Numbers

lcd.rb

# Preetam D'Souza
# 5.26.11
# lcd.rb

# Usage: "ruby lcd.rb [-s SIZE] DIGITS"
#
# Input: Digits (0..9) and an optional size.
# Size defaults to 2.
#
# Output: Input digits in variable size
# 7-segment display to stdout. Size specifies
# the length of each segment.
#
# Example: ruby lcd.rb -s 1 0123
#
#  -       -   -
# | |   |   |   |
#          -   -
# | |   | |     |
#  -       -   -

### option parsing ###

s = $*.size > 1 ? $*.slice!(0..1)[1] : '2'
num = $*[0]

unless s =~ /^[1-9]\d*$/ and num =~ /^\d+$/
  puts "Usage: #$0 [-s SIZE] DIGITS"
  exit
end
s = s.to_i

### rendering ###

hz = ' ' + '-'*s + ' '     # ' - '
vt = ['|' + ' '*s + '|']*s # '| |'
vl = ['|' + ' '*s + ' ']*s # '|  '
vr = [' ' + ' '*s + '|']*s # '  |'
bk = ' ' * hz.size         # '   '

lcd = [
        [hz] << vt << bk << vt << hz, # 0
        [bk] << vr << bk << vr << bk, # 1
        [hz] << vr << hz << vl << hz, # 2
        [hz] << vr << hz << vr << hz, # 3
        [bk] << vt << hz << vr << bk, # 4
        [hz] << vl << hz << vr << hz, # 5
        [hz] << vl << hz << vt << hz, # 6
        [hz] << vr << bk << vr << bk, # 7
        [hz] << vt << hz << vt << hz, # 8
        [hz] << vt << hz << vr << hz, # 9
                                      ]
### output ###

(0...(2*s+3)).each do |i|
  puts num.chars.collect { |n| lcd[n.to_i].flatten[i] }.join ' '
end

lcd_min.rb

s=$*.size>1?$*.slice!(0,2)[1].to_i: 2
n=$*[0]
a=' '+'-'*s+' '
b=['|'+' '*s+'|']*s
c=['|'+' '*s+' ']*s
d=[' '+' '*s+'|']*s
e=' '*a.size
l=[[a,b,e,b,a],[e,d,e,d,e],
[a,d,a,c,a],[a,d,a,d,a],
[e,b,a,d,e],[a,c,a,d,a],
[a,c,a,b,a],[a,d,e,d,e],
[a,b,a,b,a],[a,b,a,d,a]]
(0..(2*s+2)).each{|i|puts n.chars.map{|x|l[x.to_i].flatten[i]}.join' '}