Parse tab limited, two level text file

parse_topics.rb

require "rubygems"
require "sequel"

DB = Sequel.connect('jdbc:sqlite:store.db') #
all_tables = DB[:sqlite_master]

topics = [];goals = [];prev_ind = 0;second_ind = 0

Dir.glob("*.txt").each do |f| 
  IO.readlines(f).each do |line|
    if line[0..2] == '[ ]'
      second_ind+=1
      goals.push([second_ind, line[4..-2], prev_ind])
    else
      prev_ind+=1
      topics.push([prev_ind, line[0..-2]])
    end
  end
end