From: Sea&Gull <v@...>
Date: 2005-01-10T00:21:23+09:00
Subject: Re: [QUIZ] LCD Numbers (#14)

Hi!

Maybe this is irrelevant, but
what if your script would be called such way:

lcd.rb -b accc 123

lcd.rb -s accc gfgdf 123

lcd.rb -s accc 123 gfgdf

lcd.rb - 2 123


?

:o)

--
   s&g


Luc Heinrich wrote:
> Ruby Quiz <james@grayproductions.net> wrote:
> 
> 
>>This week's quiz is to write a program that displays LCD style numbers at
>>adjustable sizes.
> 
> 
> Here's my solution:
> 
> **************************** [begin code ] ****************************
> 
> #!/usr/local/bin/ruby -w
> 
> require 'getoptlong'
> 
> # ---------------------------------------------------------------------
> 
> class Digit
>     
>     @@chars = [ " ", "-", "|" ]
>     @@segments =
>     [
>         [ [0,1,0], [2,0,2], [0,0,0], [2,0,2], [0,1,0] ], # 0
>         [ [0,0,0], [0,0,2], [0,0,0], [0,0,2], [0,0,0] ], # 1
>         [ [0,1,0], [0,0,2], [0,1,0], [2,0,0], [0,1,0] ], # 2
>         [ [0,1,0], [0,0,2], [0,1,0], [0,0,2], [0,1,0] ], # 3
>         [ [0,0,0], [2,0,2], [0,1,0], [0,0,2], [0,0,0] ], # 4
>         [ [0,1,0], [2,0,0], [0,1,0], [0,0,2], [0,1,0] ], # 5
>         [ [0,1,0], [2,0,0], [0,1,0], [2,0,2], [0,1,0] ], # 6
>         [ [0,1,0], [0,0,2], [0,0,0], [0,0,2], [0,0,0] ], # 7
>         [ [0,1,0], [2,0,2], [0,1,0], [2,0,2], [0,1,0] ], # 8
>         [ [0,1,0], [2,0,2], [0,1,0], [0,0,2], [0,1,0] ]  # 9
>     ]
>     
>     attr_reader :height
>     
>     def initialize( num, size )
>         @matrix = @@segments[ num ]
>         @height = @matrix.size
>         self.scale_to_size( size ) if size > 1
>     end
>     
>     def scale_to_size( size )
>         t = size - 1
>         @matrix.each { |l| t.times { l.insert(-2, 0) } }
>         @matrix.each { |l| l.fill(1, l.index(1),size) if l.include?(1) }
>         t.times { @matrix.insert( 1, @matrix[1]) }
>         t.times { @matrix.insert(-2, @matrix[-2]) }
>         @height = @matrix.size
>     end
>     
>     def display_line( line )
>         @matrix[ line ].each { |c| print @@chars[c] }
>         print " "
>     end
>     
> end
> 
> # ---------------------------------------------------------------------
> 
> class LCD
>     
>     def initialize( num, size=1 )
>         @digits = Array.new
>         num.each_byte { |b| @digits << Digit.new( b.to_i - 48, size ) }
>     end
>     
>     def display
>         for line in 0...@digits.first.height
>             @digits.each { |d| d.display_line( line ) }
>             puts
>         end
>     end
>     
> end
> 
> # ---------------------------------------------------------------------
> 
> def print_usage( message=nil )
>     puts "Usage: lcd [-s size] digits"
> end
> 
> # ---------------------------------------------------------------------
> 
> print_usage & exit if ARGV.empty?
> 
> size = 2
> opts = GetoptLong.new( ["--size", "-s", GetoptLong::REQUIRED_ARGUMENT] )
> opts.each { |opt, val| size = val.to_i if opt == "--size" }
> 
> print_usage & exit if ARGV.empty?
> 
> digits = ARGV[0].gsub( /[^0-9]/, "" )
> lcd = LCD.new( digits, size )
> lcd.display
> 
> # ---------------------------------------------------------------------
> 
> **************************** [end code ] ******************************
>