From: Matthew Harris <shugotenshi@...>
Date: 2006-03-13T22:34:07+09:00
Subject: Re: word_wrap method for String?

Mike wrote:
>> For a text adventure program I'm working on I needed a method 
>> to word wrap a long string based on spaces or non-word 
>> characters so I came up with this.  I just thought I'd post 
>> it to see if there are any thoughts or if there might be a 
>> better way to do it.
>> 
> 
> I wrote one last week, actually
> 
>   def wrap(wrap_len=78)
>     start_pos = wrap_len
>     while start_pos < @fact.length
>       sp = @fact.rindex(' ', start_pos)
>       @fact.insert(sp, '|')
>       start_pos = sp + wrap_len + 1
>     end
>     @fact.gsub!(/\|[\s]/, "\n")
>   end
> 
> I'm far from an expert, so I don't know which method may be better :)
> 
> -M

class String
	# Wrap string by the given length, and join it with the given 
character.
	# The method doesn't distinguish between words, it will only work based 
on
	# the length. The method will also strip and whitespace.
	#
	def wrap(length = 80, character = $/)
		scan(/.{#{length}}|.+/).map { |x| x.strip }.join(character)
	end
end

puts 'Hello, World! I am quite very long :)'.wrap(15, "<br>\n")

# Output:
#
# Hello, World! I<br>
# am quite very<br>
# long :)

Have fun =)

- Matt

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