pre-processor.rb

pre-processor.rb

class PreProcessor < Struct.new(:raw)
  attr_accessor :store
  def adjust!(regexp, &block)
    inner_raw = @raw
    @raw.scan(regexp) do
      $~.names.each do |name|
        value = $~[name]
        key = SecureRandom.hex
        inner_raw = inner_raw.gsub(value, "<#{key}>")
        @store << {
          value: yield(value.strip),
          key: "<#{key}>"
        }
      end
    end

    inner_raw
  end
end

processor = PreProcessor.new("THINGS 1. IS THIS A QUESTION? STUFF")
output = processor.adjust!(/\.\s+(?<question>[^.?]+\?)/) do |value|
  "**#{value}**"
end

output # => "THINGS <d58e3582afa99040e27b92b13c8f2280> STUFF"
processor.store # => [{ value: **1. IS THIS A QUESTION?**, key: "d58e3582afa99040e27b92b13c8f2280" }]
formated = output.downcase # => "things <d58e3582afa99040e27b92b13c8f2280> stuff"
processor.store.each do |data|
  formated.sub!(data.key, data.value)
end
formated # => "things 1. IS THIS A QUESTION? stuff"