Contents

# frozen_string_literal: true

##
# Module containing methods to filter Strings
module RequestDataFiltering
  ##
  # Method responsible for extracting information
  # provided by the client like Headers and Body
  def self.extract_client_info(client)
    path, parameters = extract_url_parameters(client.gets.gsub('HTTP/1.1', ''))
    method_name = path.gsub('/', '_').strip!.downcase
    method_name.gsub!(' ', '')
    body_first_line, headers = extract_headers(client)
    body = extract_body(client, body_first_line, headers['Content-Length'].to_i)
    [path, method_name, headers, body, parameters]
  end

  ##
  # Method responsible for extracting the path from URI
  def self.extract_path(path)
    path[0] == '/' ? path[1..].gsub('/', '_') : path.gsub('/', '_')
  end

  ##
  # Method responsible for extracting the headers from request
  def self.extract_headers(client)
    header = client.gets.delete("\n").delete("\r")
    headers = {}
    while header.match(%r{[a-zA-Z0-9\-/*]*: [a-zA-Z0-9\-/*]})
      split_header = header.split(':')
      headers[split_header[0]] = split_header[1][1..]
      header = client.gets.delete("\n").delete("\r")
    end
    [header, headers]
  end

  ##
  # Method responsible for extracting the body from request
  def self.extract_body(client, body_first_line, content_length)
    body = client.read(content_length)
    body_first_line << body.to_s
  end

  ##
  # Method responsible for extracting the parameters from URI
  def self.extract_url_parameters(http_first_line)
    return http_first_line, nil unless http_first_line =~ /\?/

    path_and_parameters = http_first_line.split('?', 2)
    path = "#{path_and_parameters[0]} "
    parameters_array = path_and_parameters[1].split('&')
    parameters_array.map! do |item|
      split_item = item.split('=')
      { split_item[0] => split_item[1].gsub("\n", '').gsub("\r", '').gsub("\s", '') }
    end
    parameters = {}
    parameters_array.each { |item| parameters.merge!(item) }
    [path, parameters]
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
macaw_framework-0.1.2	lib/macaw_framework/request_data_filtering.rb