# frozen_string_literal: true class PDFKit class WkHTMLtoPDF attr_reader :options # Pulled from: # https://github.com/wkhtmltopdf/wkhtmltopdf/blob/ebf9b6cfc4c58a31349fb94c568b254fac37b3d3/README_WKHTMLTOIMAGE#L27 REPEATABLE_OPTIONS = %w[--allow --cookie --custom-header --post --post-file --run-script].freeze SPECIAL_OPTIONS = %w[cover toc].freeze def initialize(options) @options = options end def normalize_options # TODO(cdwort,sigmavirus24): Make this method idempotent in a future release so it can be called repeatedly normalized_options = {} @options.each do |key, value| next if !value # The actual option for wkhtmltopdf normalized_key = normalize_arg key normalized_key = "--#{normalized_key}" unless SPECIAL_OPTIONS.include?(normalized_key) # If the option is repeatable, attempt to normalize all values if REPEATABLE_OPTIONS.include? normalized_key normalize_repeatable_value(normalized_key, value) do |normalized_unique_key, normalized_value| normalized_options[normalized_unique_key] = normalized_value end else # Otherwise, just normalize it like usual normalized_options[normalized_key] = normalize_value(value) end end @options = normalized_options end def error_handling? @options.key?('--ignore-load-errors') || # wkhtmltopdf v0.10.0 beta4 replaces ignore-load-errors with load-error-handling # https://code.google.com/p/wkhtmltopdf/issues/detail?id=55 %w(skip ignore).include?(@options['--load-error-handling']) end def options_for_command @options.to_a.flatten.compact end private def normalize_arg(arg) arg.to_s.downcase.gsub(/[^a-z0-9]/,'-') end def normalize_value(value) case value when nil nil when TrueClass, 'true' #ie, ==true, see http://www.ruby-doc.org/core-1.9.3/TrueClass.html nil when Hash value.to_a.flatten.collect{|x| normalize_value(x)}.compact when Array value.flatten.collect{|x| x.to_s} else value.to_s end end def normalize_repeatable_value(option_name, value) case value when Hash, Array value.each do |(key, val)| yield [[option_name, normalize_value(key)], normalize_value(val)] end else yield [[option_name, normalize_value(value)], nil] end end end end