From: Logan Capaldo <logancapaldo@...>
Date: 2007-03-16T23:25:31+09:00
Subject: Re: Splitting A String

On Fri, Mar 16, 2007 at 10:35:01PM +0900, Andrew Stewart wrote:
> Hello,
> 
> What's a (good) way to convert this:
> 
>   'a quick "brown fox" jumped "over the lazy" dog'
> 
> into this:
> 
>   [ 'a', 'quick', 'brown fox', 'jumped', 'over the lazy', 'dog' ] ?
> 
Here's yet another way:

#!/usr/bin/env ruby
require 'test/unit'
require 'strscan'
class TestScan < Test::Unit::TestCase
  def test_splitter
    assert_equal( %w(a b c), splitter(%q{a b c}))
    assert_equal(["the", "\"quick brown\"", "fox", "jumped", "over", "the", "lazy", "dog"], splitter(%{the "quick brown" fox jumped over the lazy dog}))
  end
end

def splitter(s)
  res = []
  scanner = StringScanner.new(s)
  scanner.skip(/\s*/)
  until scanner.eos?
    if scanner.scan(/"/)
      # quoted string
      scanner.scan(/([^"]*")/)
      res << '"' + scanner[1]
    elsif scanner.scan(/(\S+)/)
      res << scanner[1]
    end
    scanner.skip(/\s*/)
  end
  res
end
__END__
> Thanks!
> 
> Regards,
> Andy Stewart