s = "{new {value1 value2 value3}} {old {value2 value1 value1}} {{old school} {value2 value3 value1}}"
os = []
level = 0
pos = 0
str = Struct.new(:key, :values)
value = ""
o = str.new("", [])
for i in 0...s.size
	x = s[i...i+1]
	case x
	when "{"
		level += 1
	when "}"
		if level == 2 
			pos = 1
		end
		level -= 1
	when " "
		case level
		when 0
			o.values << value
			os << o.dup
			o = str.new("", [])
			value = ""
			pos = 0
		when 1
			if pos == 0
				pos = 1
			else
				value = ""
			end
		when 2
			if pos == 0
				o.key += x
			else
				o.values << value.dup
				value = ""
			end
		else
			raise
		end
	else
		if pos == 0
			o.key += x
		else
			value += x
		end
	end
end
o.values << value
os << o
puts os.inspect