wcag.rake

# #WCAG Basic wadus
# 
# Using http://achecker.ca/checker/index.php

require 'raakt'

desc "WCAG basic wadus"
task :wcag_validate do
  # perform a setup of all our variables
  setup
  wcag_validate '.html'
end

private

# Colorize the output :)
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

# Reads the yaml with the configuration of the project to get always the correct
# output_dir and initializes the validator
def setup
  @url_validator = "http://www.achecker.ca/checker/index.php"
  @config = YAML.load_file("config.yaml")
end


# Method to validate calling to the w3c_validators methods
def wcag_validate ext
  files(@config['output_dir'], true, ext).each do |file|
    f = File.new(file)

    raakttest = Raakt::Test.new(f.read)
    result = raakttest.all

    if result.length > 0
      puts "\t #{red(file)} => #{result}"
    else
      puts "\t #{green(file)}"
    end
  end
  
end

# From nanoc
# # Returns a list of all files in +dir+, ignoring any unwanted files (files
# that end with '~', '.orig', '.rej' or '.bak').
#
# +recursively+:: When +true+, finds files in +dir+ as well as its
#                 subdirectories; when +false+, only searches +dir+
#                 itself.

def files(dir, recursively, ext = '')
  glob = File.join([dir] + (recursively ? [ "**", "*#{ext}" ] : [ "*#{ext}" ]))
  Dir[glob].reject { |f| File.directory?(f) or f =~ /(~|\.orig|\.rej|\.bak)$/ }
end