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# File 'lib/crazy_hash_filter.rb', line 7
def self.process(hash, rules)
return nil if hash.nil?
raise "Is not a Hash" unless hash.is_a?(Hash)
rules = HashWithIndifferentAccess.new(rules || {}) unless rules.is_a?(HashWithIndifferentAccess)
child_rules = rules[:child_rules] || {}
result = {}
select = rules[:select].collect(&:to_sym) unless rules[:select].nil?
hash.each do |key, value|
next if !select.nil? && !select.include?(key.to_sym)
if child_rules[key].nil?
result[key] = value
else
if value.is_a?(Array)
result[key] = self.filter_array(value, child_rules[key])
else
result[key] = self.process(value, child_rules[key])
end
end
end
result
end
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