Create hash from CSV using first field as key for a field hash based on header row

create_hash_from_csv.rb

# encoding: utf-8
require 'csv'
require 'pp'

class CodeSearch
  def initialize(csv)
     @file_path = csv
     parse
  end

  def [](index)
    @values[index]
  end

  def parse
    @values = Hash.new {|k,v| k[v] = Hash.new}
    line_array = CSV.read(@file_path)
    header = line_array.shift
    line_array.each do |row|
      tmp_hash = {}
      header.each_with_index do |v,i|
        tmp_hash[v.downcase.gsub(' ', '_').to_sym] = row[i]
      end

      @values[row.shift] = tmp_hash
    end
    @values
  end
end

c = CodeSearch.new('/path/to/csv')
pp c[:first_item_of_row_key]
#=> { "first_item_of_row_key" => "first_item_of_row_value",
#     "second_item_of_row_key" => "second_item_of_row_value" }