Class: U3d::UnityVersions::LinuxVersions

Inherits:
Object
  • Object
show all
Defined in:
lib/u3d/unity_versions.rb

REGEX: expressions to interpret data collapse

Class Method Details

.list_available ⇒ Object 



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# File 'lib/u3d/unity_versions.rb', line 90

def list_available
  UI.message 'Loading Unity releases'
  request = nil
  response = nil
  data = ''
  uri = URI(UNITY_LINUX_DOWNLOADS)
  Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
    request = Net::HTTP::Get.new uri
    request['Connection'] = 'keep-alive'
    response = http.request request

    case response
    when Net::HTTPSuccess then
      # Successfully retrieved forum content
      data = response.body
    when Net::HTTPRedirection then
      # A session must be opened with the server before accessing forum
      res = nil
      cookie_str = ''
      # Store the name and value of the cookies returned by the server
      response['set-cookie'].gsub(/\s+/, '').split(',').each do |c|
        cookie_str << c.split(';', 2)[0] + '; '
      end
      cookie_str.chomp!('; ')

      # It should be the Unity register API
      uri = URI(response['location'])
      Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http_api|
        request = Net::HTTP::Get.new uri
        request['Connection'] = 'keep-alive'
        res = http_api.request request
      end

      raise 'Unexpected result' unless res.is_a? Net::HTTPRedirection
      # It should be a redirection to the forum to perform authentication
      uri = URI(res['location'])

      request = Net::HTTP::Get.new uri
      request['Connection'] = 'keep-alive'
      request['Cookie'] = cookie_str

      res = http.request request

      raise 'Unable to establish a session with Unity forum' unless res.is_a? Net::HTTPRedirection

      cookie_str << '; ' + res['set-cookie'].gsub(/\s+/, '').split(';', 2)[0]

      uri = URI(res['location'])

      request = Net::HTTP::Get.new uri
      request['Connection'] = 'keep-alive'
      request['Cookie'] = cookie_str

      res = http.request request

      data = res.body if res.is_a? Net::HTTPSuccess
    else raise "Request failed with status #{response.code}"
    end
  end
  data.gsub(/[ \t]+/, '').each_line { |l| puts l if /<a href=/ =~ l }
  versions = {}
  results = data.scan(LINUX_DOWNLOAD)
  results.each do |capt|
    versions[capt[1]] = capt[0]
  end
  if versions.count.zero?
    UI.important 'Found no releases'
  else
    UI.success "Found #{versions.count} releases."
  end
  versions
end