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
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
|
# frozen_string_literal: false
# This file contains the implementation of trackbacks. It is entirely internal
# and not useful to outside developers.
require 'rss/1.0'
require 'rss/2.0'
module RSS # :nodoc: all
TRACKBACK_PREFIX = 'trackback'
TRACKBACK_URI = 'http://madskills.com/public/xml/rss/module/trackback/'
RDF.install_ns(TRACKBACK_PREFIX, TRACKBACK_URI)
Rss.install_ns(TRACKBACK_PREFIX, TRACKBACK_URI)
module TrackBackUtils
private
def trackback_validate(ignore_unknown_element, tags, uri)
return if tags.nil?
if tags.find {|tag| tag == "about"} and
!tags.find {|tag| tag == "ping"}
raise MissingTagError.new("#{TRACKBACK_PREFIX}:ping", tag_name)
end
end
end
module BaseTrackBackModel
ELEMENTS = %w(ping about)
def append_features(klass)
super
unless klass.class == Module
klass.module_eval {include TrackBackUtils}
klass.install_must_call_validator(TRACKBACK_PREFIX, TRACKBACK_URI)
%w(ping).each do |name|
var_name = "#{TRACKBACK_PREFIX}_#{name}"
klass_name = "TrackBack#{Utils.to_class_name(name)}"
klass.install_have_child_element(name, TRACKBACK_URI, "?", var_name)
klass.module_eval(<<-EOC, __FILE__, __LINE__)
remove_method :#{var_name}
def #{var_name}
@#{var_name} and @#{var_name}.value
end
remove_method :#{var_name}=
def #{var_name}=(value)
@#{var_name} = Utils.new_with_value_if_need(#{klass_name}, value)
end
EOC
end
[%w(about s)].each do |name, postfix|
var_name = "#{TRACKBACK_PREFIX}_#{name}"
klass_name = "TrackBack#{Utils.to_class_name(name)}"
klass.install_have_children_element(name, TRACKBACK_URI, "*",
var_name)
klass.module_eval(<<-EOC, __FILE__, __LINE__)
remove_method :#{var_name}
def #{var_name}(*args)
if args.empty?
@#{var_name}.first and @#{var_name}.first.value
else
ret = @#{var_name}.__send__("[]", *args)
if ret.is_a?(Array)
ret.collect {|x| x.value}
else
ret.value
end
end
end
remove_method :#{var_name}=
remove_method :set_#{var_name}
def #{var_name}=(*args)
if args.size == 1
item = Utils.new_with_value_if_need(#{klass_name}, args[0])
@#{var_name}.push(item)
else
new_val = args.last
if new_val.is_a?(Array)
new_val = new_value.collect do |val|
Utils.new_with_value_if_need(#{klass_name}, val)
end
else
new_val = Utils.new_with_value_if_need(#{klass_name}, new_val)
end
@#{var_name}.__send__("[]=", *(args[0..-2] + [new_val]))
end
end
alias set_#{var_name} #{var_name}=
EOC
end
end
end
end
module TrackBackModel10
extend BaseModel
extend BaseTrackBackModel
class TrackBackPing < Element
include RSS10
class << self
def required_prefix
TRACKBACK_PREFIX
end
def required_uri
TRACKBACK_URI
end
end
@tag_name = "ping"
[
["resource", ::RSS::RDF::URI, true]
].each do |name, uri, required|
install_get_attribute(name, uri, required, nil, nil,
"#{::RSS::RDF::PREFIX}:#{name}")
end
alias_method(:value, :resource)
alias_method(:value=, :resource=)
def initialize(*args)
if Utils.element_initialize_arguments?(args)
super
else
super()
self.resource = args[0]
end
end
def full_name
tag_name_with_prefix(TRACKBACK_PREFIX)
end
end
class TrackBackAbout < Element
include RSS10
class << self
def required_prefix
TRACKBACK_PREFIX
end
def required_uri
TRACKBACK_URI
end
end
@tag_name = "about"
[
["resource", ::RSS::RDF::URI, true]
].each do |name, uri, required|
install_get_attribute(name, uri, required, nil, nil,
"#{::RSS::RDF::PREFIX}:#{name}")
end
alias_method(:value, :resource)
alias_method(:value=, :resource=)
def initialize(*args)
if Utils.element_initialize_arguments?(args)
super
else
super()
self.resource = args[0]
end
end
def full_name
tag_name_with_prefix(TRACKBACK_PREFIX)
end
private
def maker_target(abouts)
abouts.new_about
end
def setup_maker_attributes(about)
about.resource = self.resource
end
end
end
module TrackBackModel20
extend BaseModel
extend BaseTrackBackModel
class TrackBackPing < Element
include RSS09
@tag_name = "ping"
content_setup
class << self
def required_prefix
TRACKBACK_PREFIX
end
def required_uri
TRACKBACK_URI
end
end
alias_method(:value, :content)
alias_method(:value=, :content=)
def initialize(*args)
if Utils.element_initialize_arguments?(args)
super
else
super()
self.content = args[0]
end
end
def full_name
tag_name_with_prefix(TRACKBACK_PREFIX)
end
end
class TrackBackAbout < Element
include RSS09
@tag_name = "about"
content_setup
class << self
def required_prefix
TRACKBACK_PREFIX
end
def required_uri
TRACKBACK_URI
end
end
alias_method(:value, :content)
alias_method(:value=, :content=)
def initialize(*args)
if Utils.element_initialize_arguments?(args)
super
else
super()
self.content = args[0]
end
end
def full_name
tag_name_with_prefix(TRACKBACK_PREFIX)
end
end
end
class RDF
class Item; include TrackBackModel10; end
end
class Rss
class Channel
class Item; include TrackBackModel20; end
end
end
BaseTrackBackModel::ELEMENTS.each do |name|
class_name = Utils.to_class_name(name)
BaseListener.install_class_name(TRACKBACK_URI, name,
"TrackBack#{class_name}")
end
BaseTrackBackModel::ELEMENTS.collect! {|name| "#{TRACKBACK_PREFIX}_#{name}"}
end
|
