Class: Http2::Utils

Inherits:
Object
  • Object
show all
Defined in:
lib/http2/utils.rb

Overview

This class holds various methods for encoding, decoding and parsing of HTTP-related stuff.

Class Method Summary collapse

Class Method Details

.parse_set_cookies(str) ⇒ Object

Parses a cookies-string and returns them in an array.



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# File 'lib/http2/utils.rb', line 20

def self.parse_set_cookies(str)
  str = str.to_s
  return [] if str.empty?

  cookie_start_regex = /^(.+?)=(.*?)(;\s*|$)/

  match = str.match(cookie_start_regex)
  raise "Could not match cookie: '#{str}'" unless match

  str.gsub!(cookie_start_regex, "")

  cookie_data = {
    name: urldec(match[1].to_s),
    value: urldec(match[2].to_s)
  }

  while (match = str.match(/(.+?)=(.*?)(;\s*|$)/))
    str = str.gsub(match[0], "")
    key = match[1].to_s.downcase
    value = match[2].to_s

    if key == "path" || key == "expires"
      cookie_data[key.to_sym] = value
    else
      cookie_data[key] = value
    end
  end

  cookie = Http2::Cookie.new(cookie_data)

  [cookie]
end

.urldec(string) ⇒ Object

URL-decodes a string.



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# File 'lib/http2/utils.rb', line 12

def self.urldec(string)
  # Thanks to CGI framework
  string.to_s.tr("+", " ").gsub(/((?:%[0-9a-fA-F]{2})+)/) do
    [Regexp.last_match(1).delete("%")].pack("H*")
  end
end

.urlenc(string) ⇒ Object

URL-encodes a string.



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# File 'lib/http2/utils.rb', line 4

def self.urlenc(string)
  # Thanks to CGI framework
  string.to_s.gsub(/([^ a-zA-Z0-9_.-]+)/) do
    "%#{Regexp.last_match(1).unpack("H2" * Regexp.last_match(1).bytesize).join("%").upcase}"
  end.tr(" ", "+")
end