explan.rb

class RowParser

	PATTERN = /^\s*([0-9]+)(\s*)(.*)\(cr=(\d+) r=(\d+) w=(\d+) time=(\d+)/
	KEYS = [ :ROW, :INDENT, :OPERATION, :CR, :R, :W, :TIME ]

	def parse(line)
		tokens = line.scan(PATTERN)[0]
		format(Hash[*([ KEYS, tokens ].transpose).flatten]) unless tokens.nil?
	end

	private
	def format(h)
		[ h[:ROW], h[:CR], h[:R], h[:W], h[:TIME], h[:INDENT].gsub(/\s/, "\t"), h[:OPERATION] ].join("\t")
	end

end


open("row_trc.txt") do |f|
	parser = RowParser.new
	while l = f.gets
		puts parser.parse(l)
	end
end