Class: Rexle

Inherits:
Object
  • Object
show all
Includes:
XMLhelper
Defined in:
lib/rexle.rb

Defined Under Namespace

Classes: CData, Comment, Element, Elements, Recordset

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from XMLhelper

#doc_pretty_print, #doc_print, #inspect, #pretty_print, #processing_instructions, #scan_print, #scan_to_a

Constructor Details

#initialize(x = nil) ⇒ Rexle

Returns a new instance of Rexle.



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
 
# File 'lib/rexle.rb', line 242

def initialize(x=nil)

  super()

  @instructions = [["xml", "version='1.0' encoding='UTF-8'"]] 
  @doctype = :xml

  # what type of input is it? Is it a string, array
  if x then
    procs = {
      String: proc {|x| parse_string(x)},
      Array: proc {|x| x},
      RexleParser: ->(x){ parse_rexle(x)}
    }
    
    doc_node = ['doc',Attributes.new]

    @a = procs[x.class.to_s.to_sym].call(x)
    
    @doc = scan_element(*(doc_node << @a))

    # fetch the namespaces
    @prefixes = []

    if @doc.root.attributes then

      xmlns = @doc.root.attributes.select {|k,v| k[/^xmlns:/]}
      @prefixes = xmlns.keys.map{|x| x[/\w+$/]}
    end
    
  end

end

Instance Attribute Details

#doctype ⇒ Object (readonly)

Returns the value of attribute doctype.



239
240
241
 
# File 'lib/rexle.rb', line 239

def doctype
  @doctype
end

#instructions ⇒ Object

Returns the value of attribute instructions.



240
241
242
 
# File 'lib/rexle.rb', line 240

def instructions
  @instructions
end

#prefixes ⇒ Object (readonly)

Returns the value of attribute prefixes.



239
240
241
 
# File 'lib/rexle.rb', line 239

def prefixes
  @prefixes
end

Instance Method Details

#add_attribute(x) ⇒ Object 



1390
 
# File 'lib/rexle.rb', line 1390

def add_attribute(x) @doc.attribute(x) end

#add_element(element) ⇒ Object Also known as: add 



1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
 
# File 'lib/rexle.rb', line 1394

def add_element(element)  

  if @doc then     
    raise 'attempted adding second root element to document' if @doc.root
    @doc.root.add_element(element) 
  else
    doc_node = ['doc', Attributes.new, element.to_a]  
    @doc = scan_element(*doc_node)      
  end
  element
end

#add_text(s) ⇒ Object 



1406
 
# File 'lib/rexle.rb', line 1406

def add_text(s) end

#at_css(selector) ⇒ Object 



280
281
282
 
# File 'lib/rexle.rb', line 280

def at_css(selector)
  @doc.root.element RexleCSS.new(selector).to_xpath
end

#attribute(key) ⇒ Object 



1391
 
# File 'lib/rexle.rb', line 1391

def attribute(key) @doc.attribute(key) end

#attributes ⇒ Object 



1392
 
# File 'lib/rexle.rb', line 1392

def attributes() @doc.attributes end

#clone ⇒ Object 



276
277
278
 
# File 'lib/rexle.rb', line 276

def clone()
  Rexle.new self.to_a
end

#content(options = {}) ⇒ Object 



1456
1457
1458
 
# File 'lib/rexle.rb', line 1456

def content(options={})
  CGI.unescapeHTML(xml(options))
end

#css(selector) ⇒ Object 



284
285
286
287
288
289
290
291
292
293
 
# File 'lib/rexle.rb', line 284

def css(selector)
  
  a = selector.split(',').flat_map do |x| 
    @doc.root.xpath RexleCSS.new(x).to_xpath
  end
  
  a.shift if self.kind_of? Rexle
  
  return a
end

#delete(xpath) ⇒ Object Also known as: remove 



1410
1411
1412
1413
1414
 
# File 'lib/rexle.rb', line 1410

def delete(xpath)

  @doc.xpath(xpath).each {|e| e.delete }

end

#element(xpath) ⇒ Object 



1418
 
# File 'lib/rexle.rb', line 1418

def element(xpath) self.xpath(xpath).first end

#elements(s = nil) ⇒ Object 



1419
 
# File 'lib/rexle.rb', line 1419

def elements(s=nil) @doc.elements(s) end

#name ⇒ Object 



1420
 
# File 'lib/rexle.rb', line 1420

def name() @doc.root.name end

#parse(x = nil) ⇒ Object 



1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
 
# File 'lib/rexle.rb', line 1369

def parse(x=nil)
  
  a = []
  
  if x then
    procs = {
      String: proc {|x| parse_string(x)},
      Array: proc {|x| x}
    }
    a = procs[x.class.to_s.to_sym].call(x)
  else    
    a = yield
  end
  
  doc_node = ['doc',Attributes.new]
  @a = procs[x.class.to_s.to_sym].call(x)
  @doc = scan_element(*(doc_node << @a))
  
  self
end

#root ⇒ Object 



1429
1430
1431
 
# File 'lib/rexle.rb', line 1429

def root() 
  @doc.elements.first 
end

#text(xpath) ⇒ Object 



1428
 
# File 'lib/rexle.rb', line 1428

def text(xpath) @doc.text(xpath) end

#to_a ⇒ Object 



1421
 
# File 'lib/rexle.rb', line 1421

def to_a() @a end

#to_s(options = {}) ⇒ Object 



1423
1424
1425
1426
 
# File 'lib/rexle.rb', line 1423

def to_s(options={}) 
  return '<UNDEFINED/>' unless @doc
  self.xml options 
end

#write(f) ⇒ Object 



1433
1434
1435
 
# File 'lib/rexle.rb', line 1433

def write(f) 
  f.write xml 
end

#xml(options = {}) ⇒ Object 



1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
 
# File 'lib/rexle.rb', line 1437

def xml(options={})

  return '' unless @doc
  o = {pretty: false, declaration: true}.merge(options)
  msg = o[:pretty] == false ? :doc_print : :doc_pretty_print

  r = ''

  if o[:declaration] == true then

    unless @instructions.assoc 'xml' then
      @instructions.unshift ["xml","version='1.0' encoding='UTF-8'"]
    end
  end

  r << method(msg).call(self.root.children, o[:declaration]).strip
  r
end

#xpath(path, &blk) ⇒ Object 



295
296
297
 
# File 'lib/rexle.rb', line 295

def xpath(path,  &blk)
  @doc.xpath(path,  &blk)
end