1: <?php
2:
3: namespace Alpha\Util\Feed;
4:
5: /**
6: * RSS 1.0 class for synication.
7: *
8: * @since 1.0
9: *
10: * @author John Collins <dev@alphaframework.org>
11: * @license http://www.opensource.org/licenses/bsd-license.php The BSD License
12: * @copyright Copyright (c) 2015, John Collins (founder of Alpha Framework).
13: * All rights reserved.
14: *
15: * <pre>
16: * Redistribution and use in source and binary forms, with or
17: * without modification, are permitted provided that the
18: * following conditions are met:
19: *
20: * * Redistributions of source code must retain the above
21: * copyright notice, this list of conditions and the
22: * following disclaimer.
23: * * Redistributions in binary form must reproduce the above
24: * copyright notice, this list of conditions and the
25: * following disclaimer in the documentation and/or other
26: * materials provided with the distribution.
27: * * Neither the name of the Alpha Framework nor the names
28: * of its contributors may be used to endorse or promote
29: * products derived from this software without specific
30: * prior written permission.
31: *
32: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
33: * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
34: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
35: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
36: * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
37: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
38: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
39: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
40: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
42: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
43: * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
44: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45: * </pre>
46: */
47: class RSS extends Feed
48: {
49: /**
50: * The XML namespace.
51: *
52: * @var string
53: *
54: * @since 1.0
55: */
56: protected $nameSpace = 'http://purl.org/rss/1.0/';
57:
58: /**
59: * The RDF namespace.
60: *
61: * @var string
62: *
63: * @since 1.0
64: */
65: private $rdfns = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
66:
67: /**
68: * The actual root tag used in each feed type.
69: *
70: * @var string
71: *
72: * @since 1.0
73: */
74: protected $rootTag = '<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://purl.org/rss/1.0/" />';
75:
76: /**
77: * Add a URL to feed item.
78: *
79: * @param $url
80: *
81: * @since 1.0
82: */
83: private function addToItems($url)
84: {
85: if ($this->items == null) {
86: $container = $this->createFeedElement('items');
87: $this->root->appendChild($container);
88: $this->items = $this->rssDoc->createElementNS($this->rdfns, 'Seq');
89: $container->appendChild($this->items);
90: }
91:
92: $item = $this->rssDoc->createElementNS($this->rdfns, 'li');
93: $this->items->appendChild($item);
94: $item->setAttribute('resource', $url);
95: }
96:
97: /**
98: * {@inheritdoc}
99: */
100: protected function addItem($title, $link, $description = null, $pubDate = null, $id = null)
101: {
102: parent::addItem($title, $link, $description, $pubDate, $id);
103: $this->addToItems($link);
104: }
105:
106: /**
107: * {@inheritdoc}
108: */
109: protected function createRSSNode($type, $parent, $title, $url, $description, $pubDate = null)
110: {
111: $parent->setAttributeNS($this->rdfns, 'rdf:about', $url);
112: parent::createRSSNode($type, $parent, $title, $url, $description, $pubDate);
113: }
114: }
115: