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ec397236 NL |
1 | <?php |
2 | /** | |
3 | * SimplePie | |
4 | * | |
5 | * A PHP-Based RSS and Atom Feed Framework. | |
6 | * Takes the hard work out of managing a complete RSS/Atom solution. | |
7 | * | |
42c80841 | 8 | * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors |
ec397236 NL |
9 | * All rights reserved. |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without modification, are | |
12 | * permitted provided that the following conditions are met: | |
13 | * | |
14 | * * Redistributions of source code must retain the above copyright notice, this list of | |
15 | * conditions and the following disclaimer. | |
16 | * | |
17 | * * Redistributions in binary form must reproduce the above copyright notice, this list | |
18 | * of conditions and the following disclaimer in the documentation and/or other materials | |
19 | * provided with the distribution. | |
20 | * | |
21 | * * Neither the name of the SimplePie Team nor the names of its contributors may be used | |
22 | * to endorse or promote products derived from this software without specific prior | |
23 | * written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS | |
26 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | |
27 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS | |
28 | * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
30 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
31 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
32 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
33 | * POSSIBILITY OF SUCH DAMAGE. | |
34 | * | |
35 | * @package SimplePie | |
42c80841 NL |
36 | * @version 1.3.1 |
37 | * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue | |
ec397236 NL |
38 | * @author Ryan Parman |
39 | * @author Geoffrey Sneddon | |
40 | * @author Ryan McCue | |
41 | * @link http://simplepie.org/ SimplePie | |
42 | * @license http://www.opensource.org/licenses/bsd-license.php BSD License | |
ec397236 NL |
43 | */ |
44 | ||
42c80841 NL |
45 | /** |
46 | * Base class for database-based caches | |
47 | * | |
48 | * @package SimplePie | |
49 | * @subpackage Caching | |
50 | */ | |
ec397236 NL |
51 | abstract class SimplePie_Cache_DB implements SimplePie_Cache_Base |
52 | { | |
42c80841 NL |
53 | /** |
54 | * Helper for database conversion | |
55 | * | |
56 | * Converts a given {@see SimplePie} object into data to be stored | |
57 | * | |
58 | * @param SimplePie $data | |
59 | * @return array First item is the serialized data for storage, second item is the unique ID for this item | |
60 | */ | |
61 | protected static function prepare_simplepie_object_for_cache($data) | |
ec397236 NL |
62 | { |
63 | $items = $data->get_items(); | |
64 | $items_by_id = array(); | |
65 | ||
66 | if (!empty($items)) | |
67 | { | |
68 | foreach ($items as $item) | |
69 | { | |
70 | $items_by_id[$item->get_id()] = $item; | |
71 | } | |
72 | ||
73 | if (count($items_by_id) !== count($items)) | |
74 | { | |
75 | $items_by_id = array(); | |
76 | foreach ($items as $item) | |
77 | { | |
78 | $items_by_id[$item->get_id(true)] = $item; | |
79 | } | |
80 | } | |
81 | ||
82 | if (isset($data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0])) | |
83 | { | |
84 | $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]; | |
85 | } | |
86 | elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0])) | |
87 | { | |
88 | $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]; | |
89 | } | |
90 | elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0])) | |
91 | { | |
92 | $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]; | |
93 | } | |
94 | elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['channel'][0])) | |
95 | { | |
96 | $channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['channel'][0]; | |
97 | } | |
98 | else | |
99 | { | |
100 | $channel = null; | |
101 | } | |
102 | ||
103 | if ($channel !== null) | |
104 | { | |
105 | if (isset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry'])) | |
106 | { | |
107 | unset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry']); | |
108 | } | |
109 | if (isset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['entry'])) | |
110 | { | |
111 | unset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['entry']); | |
112 | } | |
113 | if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item'])) | |
114 | { | |
115 | unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item']); | |
116 | } | |
117 | if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item'])) | |
118 | { | |
119 | unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item']); | |
120 | } | |
121 | if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_20]['item'])) | |
122 | { | |
123 | unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_20]['item']); | |
124 | } | |
125 | } | |
126 | if (isset($data->data['items'])) | |
127 | { | |
128 | unset($data->data['items']); | |
129 | } | |
130 | if (isset($data->data['ordered_items'])) | |
131 | { | |
132 | unset($data->data['ordered_items']); | |
133 | } | |
134 | } | |
135 | return array(serialize($data->data), $items_by_id); | |
136 | } | |
137 | } |