summaryrefslogtreecommitdiff
path: root/lib/rss/maker/dublincore.rb
blob: 29da1c39d9d3f517eb5e2e0757e2e3cd01aeab13 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
require 'rss/dublincore'
require 'rss/maker/1.0'

module RSS
  module Maker
    module DublinCoreModel
      def self.append_features(klass)
        super

        ::RSS::DublinCoreModel::ELEMENT_NAME_INFOS.each do |name, plural_name|
          plural_name ||= "#{name}s"
          full_name = "#{RSS::DC_PREFIX}_#{name}"
          full_plural_name = "#{RSS::DC_PREFIX}_#{plural_name}"
          klass_name = Utils.to_class_name(name)
          plural_klass_name = "DublinCore#{Utils.to_class_name(plural_name)}"
          full_plural_klass_name = "self.class::#{plural_klass_name}"
          full_klass_name = "#{full_plural_klass_name}::#{klass_name}"
          klass.add_need_initialize_variable(full_plural_name,
                                             "make_#{full_plural_name}")
          klass.add_other_element(full_plural_name)
          klass.__send__(:attr_accessor, full_plural_name)
          klass.module_eval(<<-EOC, __FILE__, __LINE__)
            def make_#{full_plural_name}
              #{full_plural_klass_name}.new(@maker)
            end
            
            def setup_#{full_plural_name}(rss, current)
              @#{full_plural_name}.to_rss(rss, current)
            end

            def #{full_name}
              @#{full_plural_name}[0] and @#{full_plural_name}[0].value
            end
            
            def #{full_name}=(new_value)
              @#{full_plural_name}[0] = #{full_klass_name}.new(self)
              @#{full_plural_name}[0].value = new_value
            end
EOC
        end
      end

      ::RSS::DublinCoreModel::ELEMENT_NAME_INFOS.each do |name, plural_name|
        plural_name ||= "#{name}s"
        klass_name = Utils.to_class_name(name)
        plural_klass_name = "DublinCore#{Utils.to_class_name(plural_name)}"
        module_eval(<<-EOC, __FILE__, __LINE__)
        class #{plural_klass_name}Base
          include Base

          def_array_element(#{plural_name.dump})
                            
          def new_#{name}
            #{name} = self.class::#{klass_name}.new(self)
            @#{plural_name} << #{name}
            #{name}
          end

          def to_rss(rss, current)
            @#{plural_name}.each do |#{name}|
              #{name}.to_rss(rss, current)
            end
          end
        
          class #{klass_name}Base
            include Base

            attr_accessor :value
            add_need_initialize_variable("value")
            alias_method(:content, :value)
            alias_method(:content=, :value=)

            def have_required_values?
              @value
            end
          end
        end
        EOC
      end

      def self.install_dublin_core(klass)
        ::RSS::DublinCoreModel::ELEMENT_NAME_INFOS.each do |name, plural_name|
          plural_name ||= "#{name}s"
          klass_name = Utils.to_class_name(name)
          plural_klass_name = "DublinCore#{Utils.to_class_name(plural_name)}"
          full_klass_name = "DublinCore#{klass_name}"
          klass.module_eval(<<-EOC, *Utils.get_file_and_line_from_caller(1))
          class #{plural_klass_name} < #{plural_klass_name}Base
            class #{klass_name} < #{klass_name}Base
              def to_rss(rss, current)
                if value and current.respond_to?(:dc_#{name})
                  new_item = current.class::#{full_klass_name}.new(value)
                  current.dc_#{plural_name} << new_item
                end
              end
            end
          end
EOC
        end
      end
    end

    class ChannelBase
      include DublinCoreModel
      
      remove_method(:date)
      remove_method(:date=)
      alias_method(:date, :dc_date)
      alias_method(:date=, :dc_date=)
    end
    
    class ImageBase; include DublinCoreModel; end
    class ItemsBase
      class ItemBase
        include DublinCoreModel
        
        remove_method(:date)
        remove_method(:date=)
        alias_method(:date, :dc_date)
        alias_method(:date=, :dc_date=)
      end
    end
    class TextinputBase; include DublinCoreModel; end

    class RSS10
      class Channel
        DublinCoreModel.install_dublin_core(self)
      end

      class Image
        DublinCoreModel.install_dublin_core(self)
      end

      class Items
        class Item
          DublinCoreModel.install_dublin_core(self)
        end
      end

      class Textinput
        DublinCoreModel.install_dublin_core(self)
      end
    end
    
    class RSS09
      class Channel
        DublinCoreModel.install_dublin_core(self)
      end

      class Image
        DublinCoreModel.install_dublin_core(self)
      end

      class Items
        class Item
          DublinCoreModel.install_dublin_core(self)
        end
      end

      class Textinput
        DublinCoreModel.install_dublin_core(self)
      end
    end
  end
end