Module: RSS::ListenerMixin

Included in:
REXMLListener, XMLParserListener, XMLScanListener
Defined in:
lib/rss/1.0.rb,
lib/rss/0.9.rb,
lib/rss/atom.rb,
lib/rss/parser.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#do_validate ⇒ Object

Returns the value of attribute do_validate



265
266
267
 
# File 'lib/rss/parser.rb', line 265

def do_validate
  @do_validate
end

#ignore_unknown_element ⇒ Object

Returns the value of attribute ignore_unknown_element



264
265
266
 
# File 'lib/rss/parser.rb', line 264

def ignore_unknown_element
  @ignore_unknown_element
end

#rss ⇒ Object (readonly)

Returns the value of attribute rss



262
263
264
 
# File 'lib/rss/parser.rb', line 262

def rss
  @rss
end

Instance Method Details

#initialize ⇒ Object 



267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
 
# File 'lib/rss/parser.rb', line 267

def initialize
  @rss = nil
  @ignore_unknown_element = true
  @do_validate = true
  @ns_stack = [{"xml" => :xml}]
  @tag_stack = [[]]
  @text_stack = ['']
  @proc_stack = []
  @last_element = nil
  @version = @encoding = @standalone = nil
  @xml_stylesheets = []
  @xml_child_mode = false
  @xml_element = nil
  @last_xml_element = nil
end

#instruction(name, content) ⇒ Object 



288
289
290
291
292
293
294
295
 
# File 'lib/rss/parser.rb', line 288

def instruction(name, content)
  if name == "xml-stylesheet"
    params = parse_pi_content(content)
    if params.has_key?("href")
      @xml_stylesheets << XMLStyleSheet.new(params)
    end
  end
end

#tag_end(name) ⇒ Object 



350
351
352
353
354
355
356
357
358
359
360
 
# File 'lib/rss/parser.rb', line 350

def tag_end(name)
  if DEBUG
    p "end tag #{name}"
    p @tag_stack
  end
  text = @text_stack.pop
  tags = @tag_stack.pop
  pr = @proc_stack.pop
  pr.call(text, tags) unless pr.nil?
  @ns_stack.pop
end

#tag_start(name, attributes) ⇒ Object 



297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
 
# File 'lib/rss/parser.rb', line 297

def tag_start(name, attributes)
  @text_stack.push('')

  ns = @ns_stack.last.dup
  attrs = {}
  attributes.each do |n, v|
    if /\Axmlns(?:\z|:)/ =~ n
      ns[$POSTMATCH] = v
    else
      attrs[n] = v
    end
  end
  @ns_stack.push(ns)

  prefix, local = split_name(name)
  @tag_stack.last.push([_ns(ns, prefix), local])
  @tag_stack.push([])
  if @xml_child_mode
    previous = @last_xml_element
    element_attrs = attributes.dup
    unless previous
      ns.each do |ns_prefix, value|
        next if ns_prefix == "xml"
        key = ns_prefix.empty? ? "xmlns" : "xmlns:#{ns_prefix}"
        element_attrs[key] ||= value
      end
    end
    next_element = XML::Element.new(local,
                                    prefix.empty? ? nil : prefix,
                                    _ns(ns, prefix),
                                    element_attrs)
    previous << next_element if previous
    @last_xml_element = next_element
    pr = Proc.new do |text, tags|
      if previous
        @last_xml_element = previous
      else
        @xml_element = @last_xml_element
        @last_xml_element = nil
      end
    end
    @proc_stack.push(pr)
  else
    if @rss.nil? and respond_to?("initial_start_#{local}", true)
      __send__("initial_start_#{local}", local, prefix, attrs, ns.dup)
    elsif respond_to?("start_#{local}", true)
      __send__("start_#{local}", local, prefix, attrs, ns.dup)
    else
      start_else_element(local, prefix, attrs, ns.dup)
    end
  end
end

#text(data) ⇒ Object 



362
363
364
365
366
367
368
 
# File 'lib/rss/parser.rb', line 362

def text(data)
  if @xml_child_mode
    @last_xml_element << data if @last_xml_element
  else
    @text_stack.last << data
  end
end

#xmldecl(version, encoding, standalone) ⇒ Object

set instance vars for version, encoding, standalone



284
285
286
 
# File 'lib/rss/parser.rb', line 284

def xmldecl(version, encoding, standalone)
  @version, @encoding, @standalone = version, encoding, standalone
end