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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 *
8 * Copyright (c) 2004-2009, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
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
36 * @version 1.3-dev
37 * @copyright 2004-2010 Ryan Parman, Geoffrey Sneddon, Ryan McCue
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
43 * @todo phpDoc comments
44 */
45
46
47class SimplePie_Cache_File implements SimplePie_Cache_Base
48{
49 protected $location;
50 protected $filename;
51 protected $extension;
52 protected $name;
53
54 public function __construct($location, $filename, $extension)
55 {
56 $this->location = $location;
57 $this->filename = $filename;
58 $this->extension = $extension;
59 $this->name = "$this->location/$this->filename.$this->extension";
60 }
61
62 public function save($data)
63 {
64 if (file_exists($this->name) && is_writeable($this->name) || file_exists($this->location) && is_writeable($this->location))
65 {
66 if (is_a($data, 'SimplePie'))
67 {
68 $data = $data->data;
69 }
70
71 $data = serialize($data);
72 return (bool) file_put_contents($this->name, $data);
73 }
74 return false;
75 }
76
77 public function load()
78 {
79 if (file_exists($this->name) && is_readable($this->name))
80 {
81 return unserialize(file_get_contents($this->name));
82 }
83 return false;
84 }
85
86 public function mtime()
87 {
88 if (file_exists($this->name))
89 {
90 return filemtime($this->name);
91 }
92 return false;
93 }
94
95 public function touch()
96 {
97 if (file_exists($this->name))
98 {
99 return touch($this->name);
100 }
101 return false;
102 }
103
104 public function unlink()
105 {
106 if (file_exists($this->name))
107 {
108 return unlink($this->name);
109 }
110 return false;
111 }
112}