Encode/Decode string using encodemaniax

encode.rb

#!/usr/bin/env ruby

require 'uri'
require 'net/http'
require 'cgi'
require 'nokogiri'

EM_URL = URI.parse('http://encodemaniax.com')

def build_query data, charset='utf-8'
  { charset: charset, data: data }.map do |key, val|
    "#{key}=#{CGI.escape(val)}"
  end.join('&')
end

def build_request_path path, data, charset='utf-8'
  query = build_query data, charset
  query.empty? ? path : "#{path}?#{query}"
end

def request path, data, charset='utf-8'
  Net::HTTP.start(EM_URL.host, EM_URL.port) { |http| http.get(build_request_path(path, data, charset)) }
end


def process type, data, id=nil
  body = request('/', data).body
  html = Nokogiri::HTML.parse body
  if id
    puts html.xpath("//*[@class=\"#{type}-results\"]//*[@id=\"#{id}\"]//pre").text
  else
    html.xpath("//*[@class=\"#{type}-results\"]/div[@id]").map.with_index do |div|
      puts "--- #{div.attribute('id')} ---"
      puts div.children.xpath('.').text.split("\n").map(&:strip).reject(&:empty?).compact
    end
  end
end

def encode data, id=nil
  process 'encode', data, id
end
def decode data, id=nil
  process 'decode', data, id
end

require 'optparse'

opt = OptionParser.new

options = { decode: false }
opt.on('-d') { options[:decode] = true }

opt.parse!(ARGV)

case ARGV.length
when 2
  id, data = ARGV
  options[:decode] ? decode(data, id) : encode(data, id)
when 1
  data = ARGV.first
  options[:decode] ? decode(data) : encode(data)
else throw ArgumentError
end