httpdのログをq用に整形

log_to_q.rb

require 'date'

file = ARGV[0] == nil ? STDIN : open(ARGV[0])
puts "ip\ta1\ta1\tdate\tmethod\tquery\tprotocol\trespond\tlength\treffer\tua\n"
while line = file.gets
  line = line.gsub(/[\r\n ]$/, "")
  len = line.length
  inQuato = false
  inCase = false
  values = []
  start = 0
  index = 0
  len.times do |i|
    if len <= index then break end
    c = line[index]
    index += 1
    if inQuato
      if c == "\""
        text = line.slice(start..index-2)
        if values.length == 4
          attrs = text.split(" ")
          if attrs.length == 3
            attrs.each do |str|
              values << str
            end
          else
            values << text
            values << "-"
            values << "-"
          end
        else
          values << text
        end
        start = index
        inQuato = false
      else
      end
    elsif inCase
      if c == "]"
        values << line.slice(start..index-2)
        start = index
        inCase = false
      else
      end
    else
      if c == "\""
        inQuato = true
        start = index
      elsif c == "["
        inCase = true
        start = index
      elsif c == "-"
        values << c
        index += 1
        start = index
      elsif c == " "
        if start <= index-2
          values << line.slice(start..index-2)
        end
        start = index
      else
      end
    end
  end
  puts values.join("\t")
end