Validate a URI

gistfile1.rb

# Modified https://gist.github.com/9281 to validate a remote URI instead. 
# Wouldn't surprise me if a better CLI-tool is already available, but hey, 
# we might improve it later. Also: Pretty colors!

task :validate, :site_uri do | t, args|

  require 'net/http'
  require 'w3c_validators'
  include W3CValidators

  desc "W3C validation of a URI"

  private
  
  def colorize(text, color_code); "#{color_code}#{text}\e[0m"; end
  def red(text); colorize(text, "\e[31m"); end
  def green(text); colorize(text, "\e[32m"); end

  if args.site_uri[-3,3] == "css"
    @validator = CSSValidator.new
  else
    @validator = MarkupValidator.new
  end

  rofl = Net::HTTP.get_response(URI.parse(args.site_uri)).body
  results = @validator.validate_text(rofl)

  if results.errors.length > 0
    results.errors.each do |err|
      err = "#{err}"
      err[0,38] = ""
      puts "\t #{args.site_uri} => #{red(err)}"
    end
  else
    puts "\t #{args.site_uri} => #{green('Valid!')}"
  end
  
end