# File lib/heroku/commands/db.rb, line 98
    def parse_taps_opts
      opts = {}
      opts[:default_chunksize] = extract_option("--chunksize") || 1000
      opts[:default_chunksize] = opts[:default_chunksize].to_i rescue 1000

      if filter = extract_option("--filter")
        opts[:table_filter] = filter
      elsif tables = extract_option("--tables")
        r_tables = tables.split(",").collect { |t| "^#{t.strip}$" }
        opts[:table_filter] = "(#{r_tables.join("|")})"
      end

      if extract_option("--disable-compression")
        opts[:disable_compression] = true
      end

      if resume_file = extract_option("--resume-filename")
        opts[:resume_filename] = resume_file
      end

      opts[:indexes_first] = !extract_option("--indexes-last")

      opts[:database_url] = args.detect { |a| URI.parse(a).scheme } rescue nil

      unless opts[:database_url]
        opts[:database_url] = parse_database_yml
        display "Auto-detected local database: #{opts[:database_url]}" if opts[:database_url] != ''
      end
      raise(CommandFailed, "Invalid database url") if opts[:database_url] == ''

      if extract_option("--debug")
        Taps.log.level = Logger::DEBUG
      end

      # setting local timezone equal to Heroku timezone allowing TAPS to
      # correctly transfer datetime fields between databases
      ENV['TZ'] = 'America/Los_Angeles'
      opts
    end