dict.leo.org command line interface

leo.rb

#!/usr/bin/ruby

# example usage:
# $ leo büch*
# book                            das Buch - Pl. die Bücher
# accounts                        die Bücher
# stock of books                  der Bücherbestand
# bookshelf - pl. bookshelves     das Bücherbord - Pl. die Bücherborde
# shelf pl.: shelves              das Bücherbord
# bookshelf - pl. bookshelves     das Bücherbrett
# shelf pl.: shelves              das Bücherbrett
# library                         die Bücherei
# bibliophile                     der Bücherfreund
# book lover                      der Bücherfreund | die Bücherfreundin

require 'rubygems'
require 'nokogiri'
require 'open-uri'
require 'cgi'

RAW_URL = 'http://dict.leo.org/ende?lp=ende&lang=en&searchLoc=0&cmpType=relaxed&sectHdr=on&spellToler=3&search=%s'

searchword = ARGV.join(" ")
url = RAW_URL % CGI.escape(searchword)

doc = Nokogiri::HTML(open(url))
doc.encoding = 'utf-8'

results = []
doc.css('#results tr').each do |row|
  if row.children.length == 5
    texts = row.children.map{|c| c.content.gsub("\xc2", "").
                                  gsub("\xa0", "").strip}.
                            delete_if{|s| s == ""}
    if texts.length == 2 and results.length < 10
      results.push(texts)
    end
  end
end

if results.length > 0
  leftspace = [results.map{|p| p[0].length}.max + 4, 25].max
  #rightspace = [results.map{|p| p[1].length}.max + 4, 25].max
  leftformat = "%%-%ds" % leftspace
  #rightformat = "%%-%ds" % rightspace
  rightformat = "%s"
  results.each do |result|
    puts leftformat % result[0] + " " + rightformat % result[1]
  end
end