From: Josef 'Jupp' SCHUGT <jupp@...>
Date: 2005-04-29T01:44:17+09:00
Subject: string#fmt - breaking lines (no indent)

Hi!

After some trouble with mail programs not supporting "format=flowed" I
wrote a quick hack that line-breaks strings but keeps words intact
that exceed the intended line-length (currently hard-wired to 72 - I
already wrote that it is a quick hack, didn't I?). No warranty of any
kind. Improvements welcome. I did not forget to implement indentations
- the strings that I apply String#fmt to simply don't have them.

class String
  def fmt
    maxlen = 72
    result = ""
    temp   = ""
    gsub(/[ \s]+/, ' ').strip.scan(/[^ ]+/) { |x|
      if temp == ""
        temp << x
      else
        if temp.length + x.length < maxlen
	  temp << " " + x
	else
	  result << temp + "\n"
	  temp = ""
	  redo
	end
      end
    }
    result + temp
  end
end

Josef 'Jupp' Schugt