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1 <?php
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2 /*
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3 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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4 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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5 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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6 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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7 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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8 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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9 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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10 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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11 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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12 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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13 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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14 *
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15 * This software consists of voluntary contributions made by many individuals
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16 * and is licensed under the MIT license. For more information, see
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17 * <http://www.doctrine-project.org>.
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18 */
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19
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20 namespace Doctrine\Common\Cache;
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21
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22 /**
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23 * Php file cache driver.
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24 *
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25 * @since 2.3
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26 * @author Fabio B. Silva <fabio.bat.silva@gmail.com>
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27 */
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28 class PhpFileCache extends FileCache
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29 {
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30 const EXTENSION = '.doctrinecache.php';
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31
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32 /**
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33 * {@inheritdoc}
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34 */
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35 public function __construct($directory, $extension = self::EXTENSION, $umask = 0002)
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36 {
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37 parent::__construct($directory, $extension, $umask);
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38 }
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39
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40 /**
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41 * {@inheritdoc}
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42 */
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43 protected function doFetch($id)
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44 {
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45 $value = $this->includeFileForId($id);
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46
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47 if (! $value) {
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48 return false;
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49 }
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50
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51 if ($value['lifetime'] !== 0 && $value['lifetime'] < time()) {
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52 return false;
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53 }
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54
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55 return $value['data'];
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56 }
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57
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58 /**
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59 * {@inheritdoc}
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60 */
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61 protected function doContains($id)
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62 {
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63 $value = $this->includeFileForId($id);
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64
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65 if (! $value) {
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66 return false;
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67 }
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68
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69 return $value['lifetime'] === 0 || $value['lifetime'] > time();
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70 }
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71
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72 /**
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73 * {@inheritdoc}
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74 */
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75 protected function doSave($id, $data, $lifeTime = 0)
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76 {
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77 if ($lifeTime > 0) {
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78 $lifeTime = time() + $lifeTime;
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79 }
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80
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81 if (is_object($data) && ! method_exists($data, '__set_state')) {
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82 throw new \InvalidArgumentException(
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83 "Invalid argument given, PhpFileCache only allows objects that implement __set_state() " .
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84 "and fully support var_export(). You can use the FilesystemCache to save arbitrary object " .
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85 "graphs using serialize()/deserialize()."
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86 );
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87 }
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88
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89 $filename = $this->getFilename($id);
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90
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91 $value = array(
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92 'lifetime' => $lifeTime,
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93 'data' => $data
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94 );
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95
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96 $value = var_export($value, true);
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97 $code = sprintf('<?php return %s;', $value);
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98
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99 return $this->writeFile($filename, $code);
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100 }
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101
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102 /**
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103 * @param string $id
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104 *
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105 * @return array|false
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106 */
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107 private function includeFileForId($id)
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108 {
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109 $fileName = $this->getFilename($id);
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110
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111 // note: error suppression is still faster than `file_exists`, `is_file` and `is_readable`
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112 $value = @include $fileName;
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113
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114 if (! isset($value['lifetime'])) {
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115 return false;
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116 }
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117
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118 return $value;
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119 }
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120 }
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