cgi.mrb

#mruby ghetto PORT from https://ruby-doc.org/stdlib-1.9.3/libdoc/cgi/rdoc/CGI.html#method-c-parse
module CGI
  def self.parse(query)
    params = {}
    query.split(/[&;]/).each do |pairs|
      key, value = pairs.split('=',2).collect{|v| CGI::unescape(v) }
      if key && value
        params.has_key?(key) ? params[key].push(value) : params[key] = [value]
      elsif key
        params[key]=[]
      end
    end
    params.default=[].freeze
    params
  end

  def self.unescape(string)
    str=string.gsub(/\+/, ' ').gsub(/((?:%[0-9a-fA-F]{2})+)/) do
      [$1.delete('%')].pack('H*')
    end
    str
  end

end