Stock parser

stocks.rb

#!/usr/bin/env ruby

cap_range =
  case (ARGV[1] || '').downcase
  when /small/
    puts "Filtering small caps: 50MM - 2B"
    0...2_000
  when /mid/
    puts "Filtering mid caps: 2B - 10B"
    2_000...10_000
  when /large/
    puts "Filtering large caps: 10B+"
    10_000..Float::INFINITY
  else
    0..Float::INFINITY
  end

File.readlines(ARGV[0]).each do |line|
  begin
    next unless line =~ /[A-Z]{3,5}/
    _, ticker, cap = line.split(/\t/)
    next if cap.nil?

    cap_d = cap.gsub(/,/,'').to_f
    next unless cap_range.cover?(cap_d)

    puts "#{ticker} -> #{cap_d}" if ENV['DEBUG']
    puts ticker
  end
end