Class: RSS::Maker::Base

Inherits:
Object
  • Object
show all
Extended by:
Utils::InheritedReader
Defined in:
lib/rss/maker/base.rb

Direct Known Subclasses

ChannelBase, ChannelBase::AuthorsBase, ChannelBase::AuthorsBase::AuthorBase, ChannelBase::CategoriesBase, ChannelBase::CategoriesBase::CategoryBase, ChannelBase::CloudBase, ChannelBase::ContributorsBase, ChannelBase::ContributorsBase::ContributorBase, ChannelBase::CopyrightBase, ChannelBase::DescriptionBase, ChannelBase::GeneratorBase, ChannelBase::LinksBase, ChannelBase::LinksBase::LinkBase, ChannelBase::SkipDaysBase, ChannelBase::SkipDaysBase::DayBase, ChannelBase::SkipHoursBase, ChannelBase::SkipHoursBase::HourBase, ChannelBase::TitleBase, ITunesChannelModel::ITunesCategoriesBase, ITunesChannelModel::ITunesCategoriesBase::ITunesCategoryBase, ITunesChannelModel::ITunesImageBase, ITunesChannelModel::ITunesOwnerBase, ITunesItemModel::ITunesDurationBase, ImageBase, ImageFaviconModel::ImageFaviconBase, ImageItemModel::ImageItemBase, ItemsBase, ItemsBase::ItemBase, ItemsBase::ItemBase::ContentBase, ItemsBase::ItemBase::DescriptionBase, ItemsBase::ItemBase::EnclosureBase, ItemsBase::ItemBase::GuidBase, ItemsBase::ItemBase::RightsBase, ItemsBase::ItemBase::SourceBase, ItemsBase::ItemBase::SourceBase::IconBase, ItemsBase::ItemBase::SourceBase::LogoBase, ItemsBase::ItemBase::SourceBase::RightsBase, ItemsBase::ItemBase::SourceBase::SubtitleBase, ItemsBase::ItemBase::SourceBase::TitleBase, ItemsBase::ItemBase::TitleBase, RSSBase, TaxonomyTopicModel::TaxonomyTopicsBase, TaxonomyTopicModel::TaxonomyTopicsBase::TaxonomyTopicBase, TaxonomyTopicsModel::TaxonomyTopicsBase, TextinputBase, TrackBackModel::TrackBackAboutsBase, TrackBackModel::TrackBackAboutsBase::TrackBackAboutBase, XMLStyleSheets, XMLStyleSheets::XMLStyleSheet

Constant Summary collapse

OTHER_ELEMENTS = 
[]
NEED_INITIALIZE_VARIABLES = 
[]

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Utils::InheritedReader

inherited_array_reader, inherited_hash_reader, inherited_reader

Constructor Details

#initialize(maker) ⇒ Base

Returns a new instance of Base.



175
176
177
178
179
 
# File 'lib/rss/maker/base.rb', line 175

def initialize(maker)
  @maker = maker
  @default_values_are_set = false
  initialize_variables
end

Instance Attribute Details

#maker ⇒ Object (readonly)

Returns the value of attribute maker.



174
175
176
 
# File 'lib/rss/maker/base.rb', line 174

def maker
  @maker
end

Class Method Details

.add_need_initialize_variable(variable_name, init_value = nil, &init_block) ⇒ Object 



34
35
36
37
38
 
# File 'lib/rss/maker/base.rb', line 34

def add_need_initialize_variable(variable_name, init_value=nil,
                                 &init_block)
  init_value ||= init_block
  self::NEED_INITIALIZE_VARIABLES << [variable_name, init_value]
end

.add_other_element(variable_name) ⇒ Object 



30
31
32
 
# File 'lib/rss/maker/base.rb', line 30

def add_other_element(variable_name)
  self::OTHER_ELEMENTS << variable_name
end

.def_array_element(name, plural = nil, klass_name = nil) ⇒ Object 



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
 
# File 'lib/rss/maker/base.rb', line 40

def def_array_element(name, plural=nil, klass_name=nil)
  include Enumerable
  extend Forwardable

  plural ||= "#{name}s"
  klass_name ||= Utils.to_class_name(name)
  def_delegators("@#{plural}", :<<, :[], :[]=, :first, :last)
  def_delegators("@#{plural}", :push, :pop, :shift, :unshift)
  def_delegators("@#{plural}", :each, :size, :empty?, :clear)

  add_need_initialize_variable(plural) {[]}

  module_eval(<<-EOC, __FILE__, __LINE__ + 1)
    def new_#{name}
      #{name} = self.class::#{klass_name}.new(@maker)
      @#{plural} << #{name}
      if block_given?
        yield #{name}
      else
        #{name}
      end
    end
    alias new_child new_#{name}

    def to_feed(*args)
      @#{plural}.each do |#{name}|
        #{name}.to_feed(*args)
      end
    end

    def replace(elements)
      @#{plural}.replace(elements.to_a)
    end
  EOC
end

.def_classed_element(name, class_name = nil, attribute_name = nil) ⇒ Object 



94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
 
# File 'lib/rss/maker/base.rb', line 94

def def_classed_element(name, class_name=nil, attribute_name=nil)
  def_classed_element_without_accessor(name, class_name)
  if attribute_name
    module_eval(<<-EOC, __FILE__, __LINE__ + 1)
      def #{name}
        if block_given?
          yield(@#{name})
        else
          @#{name}.#{attribute_name}
        end
      end

      def #{name}=(new_value)
        @#{name}.#{attribute_name} = new_value
      end
    EOC
  else
    attr_reader name
  end
end

.def_classed_element_without_accessor(name, class_name = nil) ⇒ Object 



76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
 
# File 'lib/rss/maker/base.rb', line 76

def def_classed_element_without_accessor(name, class_name=nil)
  class_name ||= Utils.to_class_name(name)
  add_other_element(name)
  add_need_initialize_variable(name) do |object|
    object.send("make_#{name}")
  end
  module_eval(<<-EOC, __FILE__, __LINE__ + 1)
    private
    def setup_#{name}(feed, current)
      @#{name}.to_feed(feed, current)
    end

    def make_#{name}
      self.class::#{class_name}.new(@maker)
    end
  EOC
end

.def_classed_elements(name, attribute, plural_class_name = nil, plural_name = nil, new_name = nil) ⇒ Object 



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
 
# File 'lib/rss/maker/base.rb', line 115

def def_classed_elements(name, attribute, plural_class_name=nil,
                         plural_name=nil, new_name=nil)
  plural_name ||= "#{name}s"
  new_name ||= name
  def_classed_element(plural_name, plural_class_name)
  local_variable_name = "_#{name}"
  new_value_variable_name = "new_value"
  additional_setup_code = nil
  if block_given?
    additional_setup_code = yield(local_variable_name,
                                  new_value_variable_name)
  end
  module_eval(<<-EOC, __FILE__, __LINE__ + 1)
    def #{name}
      #{local_variable_name} = #{plural_name}.first
      #{local_variable_name} ? #{local_variable_name}.#{attribute} : nil
    end

    def #{name}=(#{new_value_variable_name})
      #{local_variable_name} =
        #{plural_name}.first || #{plural_name}.new_#{new_name}
      #{additional_setup_code}
      #{local_variable_name}.#{attribute} = #{new_value_variable_name}
    end
  EOC
end

.def_csv_element(name, type = nil) ⇒ Object 



159
160
161
162
163
164
165
166
167
168
169
170
171
 
# File 'lib/rss/maker/base.rb', line 159

def def_csv_element(name, type=nil)
  def_other_element_without_accessor(name)
  attr_reader(name)
  converter = ""
  if type == :integer
    converter = "{|v| Integer(v)}"
  end
  module_eval(<<-EOC, __FILE__, __LINE__ + 1)
    def #{name}=(value)
      @#{name} = Utils::CSV.parse(value)#{converter}
    end
  EOC
end

.def_other_element(name) ⇒ Object 



142
143
144
145
 
# File 'lib/rss/maker/base.rb', line 142

def def_other_element(name)
  attr_accessor name
  def_other_element_without_accessor(name)
end

.def_other_element_without_accessor(name) ⇒ Object 



147
148
149
150
151
152
153
154
155
156
157
 
# File 'lib/rss/maker/base.rb', line 147

def def_other_element_without_accessor(name)
  add_need_initialize_variable(name)
  add_other_element(name)
  module_eval(<<-EOC, __FILE__, __LINE__ + 1)
    def setup_#{name}(feed, current)
      if !@#{name}.nil? and current.respond_to?(:#{name}=)
        current.#{name} = @#{name}
      end
    end
  EOC
end

.inherited(subclass) ⇒ Object 



25
26
27
28
 
# File 'lib/rss/maker/base.rb', line 25

def inherited(subclass)
  subclass.const_set(:OTHER_ELEMENTS, [])
  subclass.const_set(:NEED_INITIALIZE_VARIABLES, [])
end

.inherited_base ⇒ Object 



21
22
23
 
# File 'lib/rss/maker/base.rb', line 21

def inherited_base
  ::RSS::Maker::Base
end

.need_initialize_variables ⇒ Object 



17
18
19
 
# File 'lib/rss/maker/base.rb', line 17

def need_initialize_variables
  inherited_array_reader("NEED_INITIALIZE_VARIABLES")
end

.other_elements ⇒ Object 



14
15
16
 
# File 'lib/rss/maker/base.rb', line 14

def other_elements
  inherited_array_reader("OTHER_ELEMENTS")
end

Instance Method Details

#have_required_values? ⇒ Boolean

Returns:

  • (Boolean) 


181
182
183
 
# File 'lib/rss/maker/base.rb', line 181

def have_required_values?
  not_set_required_variables.empty?
end

#variable_is_set? ⇒ Boolean

Returns:

  • (Boolean) 


185
186
187
 
# File 'lib/rss/maker/base.rb', line 185

def variable_is_set?
  variables.any? {|var| not __send__(var).nil?}
end