Class: HTML::Proofer

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

Defined Under Namespace

Classes: Checkable, Checks

Instance Attribute Summary collapse

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 13

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

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

  @failed_tests = []

  Yell.new({ :format => false, :name => "HTML::Proofer", :level => "gte.#{log_level}" }) do |l|
    l.adapter :stdout, level: [:debug, :info, :warn]
    l.adapter :stderr, level: [:error, :fatal]
  end
end

Instance Attribute Details

#failed_tests ⇒ Object

Returns the value of attribute failed_tests.



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# File 'lib/html/proofer.rb', line 11

def failed_tests
  @failed_tests
end

Class Method Details

.create_nokogiri(path) ⇒ Object 



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# File 'lib/html/proofer.rb', line 132

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 124

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 138

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

#hydra ⇒ Object 



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# File 'lib/html/proofer.rb', line 120

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

#log_level ⇒ Object 



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# File 'lib/html/proofer.rb', line 142

def log_level
  @options[:verbose] ? :debug : :info
end

#response_handler(response, filenames) ⇒ Object 



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# File 'lib/html/proofer.rb', line 93

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

  logger.debug "Received a #{response_code} for #{href} in #{filenames.join(' ')}"

  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 35

def run
  total_files = 0
  external_urls = {}

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

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

    get_checks.each do |klass|
      logger.debug "Checking #{klass.to_s.downcase} on #{path} ...".blue
      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]
    logger.info "Checking #{external_urls.length} external links...".yellow

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

    Ethon.logger = logger # log from Typhoeus/Ethon

    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
    logger.debug "Running requests for all #{hydra.queued_requests.size} external URLs...".yellow
    hydra.run
  end

  logger.info "Ran on #{total_files} files!\n\n".green

  if @failed_tests.empty?
    logger.info "HTML-Proofer finished successfully.".green
  else
    @failed_tests.sort.each do |issue|
      logger.error issue.to_s.red
    end

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