find_acronym.rb

require "net/http"
require "nokogiri"

unless [1, 2].include? ARGV.length
  puts "Usage: TERM [max number of results to display]"
  exit
end

def max_results
  max = ARGV[1].to_i
  max > 1 ? max : 5
end

def get_term(row)
  row.css(".desc").inner_text
end

def get_filled_stars(row)
  row.css("#abbr-rate .sf").count
end

def get_total_stars(row)
  row.css("#abbr-rate .se").count + get_filled_stars(row)
end

def uniquify_results!(results)
  results.uniq! do |result|
    result[0]
  end
end

def trim_results!(results)
  results.reject! { |result| result[2].to_i == 0 }
  results.pop until results.count <= max_results
end

def display_results(results)
  if results.count > 0
    results.each do |result|
      puts "#{result[0]} (#{result[1]} / #{result[2]})"
    end
  else
    puts "No acronyms found"
  end
end

uri = URI("http://www.abbreviations.com/#{ARGV[0]}")
doc = Nokogiri::HTML(Net::HTTP.get(uri))

data = doc.css("table.tdata tr")
results = []

data.each do |row|
  term           = get_term(row)
  stars          = get_filled_stars(row)
  highest_rating = get_total_stars(row)

  results << [term, stars, highest_rating]
end

uniquify_results!(results)
trim_results!(results)
display_results(results)