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# ---------------------------------------------------------------------------
#
# This script validates the generated guides against the W3C Validator.
#
# Guides are taken from the output directory, from where all .html files are
# submitted to the validator.
#
# This script is prepared to be launched from the guides directory as a rake task:
#
# rake guides:validate
#
# If nothing is specified, all files will be validated, but you can check just
# some of them using this environment variable:
#
# ONLY
# Use ONLY if you want to validate only one or a set of guides. Prefixes are
# enough:
#
# # validates only association_basics.html
# rake guides:validate ONLY=assoc
#
# Separate many using commas:
#
# # validates only association_basics.html and migrations.html
# rake guides:validate ONLY=assoc,migrations
#
# ---------------------------------------------------------------------------
require 'w3c_validators'
include W3CValidators
module RailsGuides
class Validator
def validate
validator = MarkupValidator.new
STDOUT.sync = true
errors_on_guides = {}
guides_to_validate.each do |f|
begin
results = validator.validate_file(f)
rescue Exception => e
puts "\nCould not validate #{f} because of #{e}"
next
end
if results.validity
print "."
else
print "E"
errors_on_guides[f] = results.errors
end
end
show_results(errors_on_guides)
end
private
def guides_to_validate
guides = Dir["./output/*.html"]
guides.delete("./output/layout.html")
ENV.key?('ONLY') ? select_only(guides) : guides
end
def select_only(guides)
prefixes = ENV['ONLY'].split(",").map(&:strip)
guides.select do |guide|
prefixes.any? {|p| guide.start_with?("./output/#{p}")}
end
end
def show_results(error_list)
if error_list.size == 0
puts "\n\nAll checked guides validate OK!"
else
error_summary = error_detail = ""
error_list.each_pair do |name, errors|
error_summary += "\n #{name}"
error_detail += "\n\n #{name} has #{errors.size} validation error(s):\n"
errors.each do |error|
error_detail += "\n "+error.to_s.delete("\n")
end
end
puts "\n\nThere are #{error_list.size} guides with validation errors:\n" + error_summary
puts "\nHere are the detailed errors for each guide:" + error_detail
end
end
end
end
RailsGuides::Validator.new.validate
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