Class: HTML::Proofer

Inherits:
Object
  • Object
show all
Defined in:
lib/html/proofer.rb,
lib/html/proofer/checks.rb,
lib/html/proofer/version.rb,
lib/html/proofer/checkable.rb

Defined Under Namespace

Classes: Checkable, Checks

Constant Summary collapse

VERSION = 
"0.6.2"

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(src, opts = {}) ⇒ Proofer

Returns a new instance of Proofer.



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# File 'lib/html/proofer.rb', line 8

def initialize(src, opts={})
  @srcDir = src

  @proofer_opts = {:ext => ".html", :href_swap => [], :href_ignore => [], :disable_external => false }
  @options = @proofer_opts.merge({:followlocation => true}).merge(opts)

  @failed_tests = []
end

Class Method Details

.create_nokogiri(path) ⇒ Object 



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# File 'lib/html/proofer.rb', line 108

def self.create_nokogiri(path)
  path << "/index.html" if File.directory? path # support for Jekyll-style links
  content = File.open(path, "rb") {|f| f.read }
  Nokogiri::HTML(content)
end

Instance Method Details

#files ⇒ Object 



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# File 'lib/html/proofer.rb', line 100

def files
  if File.directory? @srcDir
    Dir.glob("#{@srcDir}/**/*#{@options[:ext]}")
  else
    File.extname(@srcDir) == @options[:ext] ? [@srcDir] : []
  end
end

#get_checks ⇒ Object 



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# File 'lib/html/proofer.rb', line 114

def get_checks
  HTML::Proofer::Checks::Check.subclasses
end

#hydra ⇒ Object 



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# File 'lib/html/proofer.rb', line 96

def hydra
  @hydra ||= Typhoeus::Hydra.new
end

#response_handler(response, filenames) ⇒ Object 



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# File 'lib/html/proofer.rb', line 71

def response_handler(response, filenames)
  href = response.options[:effective_url]
  method = response.request.options[:method]
  response_code = response.code

  if response_code.between?(200, 299)
    # continue with no op
  elsif response.timed_out?
     @failed_tests << "#{filenames.join(' ').blue}: External link #{href} failed: got a time out"
  elsif (response_code == 405 || response_code == 420 || response_code == 503) && method == :head
    # 420s usually come from rate limiting; let's ignore the query and try just the path with a GET
    uri = URI(href)
    next_response = Typhoeus.get(uri.scheme + "://" + uri.host + uri.path, @options)
    response_handler(next_response, filenames)
  # just be lazy; perform an explicit get request. some servers are apparently not configured to
  # intercept HTTP HEAD
  elsif method == :head
    next_response = Typhoeus.get(href, @options)
    response_handler(next_response, filenames)
  else
    # Received a non-successful http response.
    @failed_tests << "#{filenames.join(' ').blue}: External link #{href} failed: #{response_code} #{response.return_message}"
  end
end

#run ⇒ Object 



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# File 'lib/html/proofer.rb', line 17

def run
  total_files = 0
  external_urls = {}

  puts "Running #{get_checks} checks on #{@srcDir} on *#{@options[:ext]}... \n\n"

  files.each do |path|
    total_files += 1
    html = HTML::Proofer.create_nokogiri(path)

    get_checks.each do |klass|
      check = klass.new(@srcDir, path, html, @options)
      check.run
      external_urls.merge!(check.external_urls)
      @failed_tests.concat(check.issues) if check.issues.length > 0
    end
  end

  # the hypothesis is that Proofer runs way faster if we pull out
  # all the external URLs and run the checks at the end. Otherwise, we're halting
  # the consuming process for every file. In addition, sorting the list lets
  # libcurl keep connections to hosts alive. Finally, we'll make a HEAD request,
  # rather than GETing all the contents
  external_urls = Hash[external_urls.sort]

  unless @options[:disable_external]
    puts "Checking #{external_urls.length} external links... \n\n"

    # Typhoeus won't let you pass any non-Typhoeus option
    @proofer_opts.each_key do |opt|
      @options.delete opt
    end

    external_urls.each_pair do |href, filenames|
      request = Typhoeus::Request.new(href, @options.merge({:method => :head}))
      request.on_complete { |response| response_handler(response, filenames) }
      hydra.queue request
    end
    hydra.run
  end

  puts "Ran on #{total_files} files!"

  if @failed_tests.empty?
    puts "HTML-Proofer finished successfully.".green
  else
    @failed_tests.each do |issue|
      $stderr.puts issue + "\n\n"
    end

    raise "HTML-Proofer found #{@failed_tests.length} failures!"
  end
end