From: 7stud -- <bbxx789_05ss@...>
Date: 2009-03-31T11:33:38+09:00
Subject: Re: Euro currency symbol

David Wright wrote:
> Hmm, I seem to be having a bit of a time representing  the Euro sign in
> Ruby.
> 
> ruby -v
> ruby 1.8.6 (2008-03-03 patchlevel 114) [universal-darwin9.0]
> (same results on a linux box, 1.8.5 with Ruby)
> 
> symbol: ���
> Decimal: 8364
> hex: 20Ac
> html number: &#8364;
> html name: &euro;
> description: euro sign
> 
> 
> dwright@[1061]:dwright% perl -C2 -le 'print chr(oct("20254"))'
> ���
> 
> dwright@[1062]:dwright%ruby -le 'puts "20254".oct.chr'
> -e:1:in `chr': 8364 out of char range (RangeError)
>   from -e:1
> 
> dwright@[1063]:dwright%irb
>>> puts "20254".oct
> 8364
> 
> 
>>> puts "20254".oct.chr
> RangeError: 8364 out of char range
>   from (irb):5:in `chr'
>   from (irb):5
> 
> ruby -e 'puts "20Ac".hex.chr'
> -e:1:in `chr': 8364 out of char range (RangeError)
>   from -e:1
> 
> 
> ruby -KU -e 'puts "20Ac".hex.chr'
> -e:1:in `chr': 8364 out of char range (RangeError)
>   from -e:1
> 
> ruby -KU -e '$KCODE="u";puts "20Ac".hex.chr'
> -e:1:in `chr': 8364 out of char range (RangeError)
>   from -e:1
> 
>  ruby -e "puts '20Ac'.hex.chr"
> -e:1:in `chr': 8364 out of char range (RangeError)
>   from -e:1
> 
> Here's the pound:
> 
> ruby -e 'puts "The pound:\243"'
> The pound:��
> 
> ruby -e 'puts "243".oct.chr'
> ��


dec_num = "20254".oct
puts dec_num

--output:--
8364


$ri chr
------------------------------------------------------------ Integer#chr
     int.chr    => string
------------------------------------------------------------------------
     Returns a string containing the ASCII character represented by the
     receiver's value.

        65.chr    #=> "A"
        ?a.chr    #=> "a"
        230.chr   #=> "\346"


There is no ascii character with an ascii code equal to 8364.  The pound 
has been around a long time, and it made it into extended ascii (or 
latin-1, which uses 8 bits).  The euro is a recent invention, and it's 
numerical code is way out in unicode land.

arr = []
arr << dec_num
str = arr.pack("U")  #U=UTF-8 => encode unicode 8364 into a UTF-8 
character.
puts str

--output:--
���

-- 
Posted via http://www.ruby-forum.com/.