test.rb

#!/usr/bin/ruby

require 'pp'

log = File.open('access.log', 'r')

begin
    lines = []
    5.times do
        line = log.readline
        parts = line.split(/\s+/)
        parts[3] += " " + parts.delete_at(4)

        cat_idx = 0
        closed = true

        old_parts = parts[0..3]
        parts = parts[4..-1]
        new_parts = [""]

        while !parts.empty? do
            part = parts.shift
            if part =~ /^"/ and closed
                new_parts.push part
                cat_idx = new_parts.length - 1
                closed = false unless part =~ /"$/
            elsif !closed
                new_parts[cat_idx] += " " + part
                if part =~ /"$/
                    closed = true
                end
            else
                new_parts.push part
            end
        end

        parts = old_parts + new_parts
        parts.each { |x| x.sub!(/^"/, ''); x.sub!(/"$/, '') }

        lines.push old_parts + new_parts
    end
    pp lines
rescue EOFError
end

log.close