Contents

module Awsum
  class Ec2
    class ImageParser < Awsum::Parser #:nodoc:
      def initialize(ec2)
        @ec2 = ec2
        @images = []
        @text = nil
        @stack = []
      end

      def tag_start(tag, attributes)
        case tag
          when 'imagesSet', 'blockDeviceMapping', 'productCodes'
            @stack << tag
          when 'item'
            case @stack[-1]
              when 'imagesSet'
                @current = {}
                @text = ''
              when 'productCodes'
                @product_codes = []
                @text = ''
            end
        end
      end

      def text(text)
        @text << text unless @text.nil?
      end

      def tag_end(tag)
        case tag
          when 'DescribeImagesResponse', 'requestId'
            #no-op
          when 'imagesSet', 'productCodes', 'blockDeviceMapping'
            @stack.pop
          when 'item'
            case @stack[-1]
              when 'imagesSet'
                @images << Image.new(
                              @ec2,
                              @current['imageId'],
                              @current['imageLocation'],
                              @current['imageState'],
                              @current['imageOwnerId'],
                              @current['isPublic'] == 'true',
                              @current['architecture'],
                              @current['imageType'],
                              @current['kernelId'],
                              @current['ramdiskId'],
                              @current['platform'],
                              @product_codes || []
                            )
                @text = ''
            end
          when 'productCode'
            @product_codes << @text.strip
          else
            unless @text.nil?
              text = @text.strip
              @current[tag] = (text == '' ? nil : text)
              @text = ''
            end
        end
      end

      def result
        @images
      end
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
awsum-0.5.4	lib/awsum/ec2/parsers/image_parser.rb
awsum-0.5.3	lib/awsum/ec2/parsers/image_parser.rb
awsum-0.5.2	lib/awsum/ec2/parsers/image_parser.rb
awsum-0.5.1	lib/awsum/ec2/parsers/image_parser.rb