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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Karla ImageMagick wrapper library |
| 5 | * |
| 6 | * PHP Version 8.0< |
| 7 | * |
| 8 | * @category Utility |
| 9 | * @author Johannes Skov Frandsen <jsf@greenoak.dk> |
| 10 | * @license http://www.opensource.org/licenses/mit-license.php MIT |
| 11 | * @link https://github.com/localgod/karla Karla |
| 12 | * @since 2012-04-05 |
| 13 | */ |
| 14 | |
| 15 | declare(strict_types=1); |
| 16 | |
| 17 | namespace Karla\Cache; |
| 18 | |
| 19 | /** |
| 20 | * Class for file caching |
| 21 | * |
| 22 | * @category Utility |
| 23 | * @author Johannes Skov Frandsen <jsf@greenoak.dk> |
| 24 | * @license http://www.opensource.org/licenses/mit-license.php MIT |
| 25 | * @link https://github.com/localgod/karla Karla |
| 26 | */ |
| 27 | class File implements \Karla\Cache |
| 28 | { |
| 29 | /** |
| 30 | * Cache directory |
| 31 | * |
| 32 | * @var string |
| 33 | */ |
| 34 | private string $cacheDir; |
| 35 | |
| 36 | /** |
| 37 | * Create a new file cache |
| 38 | * |
| 39 | * @param string $dirName |
| 40 | * Path to cach directory |
| 41 | * |
| 42 | * @throws \InvalidArgumentException |
| 43 | */ |
| 44 | public function __construct(string $dirName) |
| 45 | { |
| 46 | $this->setCacheDir($dirName); |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Set the cache directory |
| 51 | * |
| 52 | * @param string $dirName |
| 53 | * Path to the cache directory |
| 54 | * |
| 55 | * @return void |
| 56 | * @throws \InvalidArgumentException if path was not found |
| 57 | * @throws \InvalidArgumentException if path was not writeable |
| 58 | * @throws \InvalidArgumentException if path was a directoy |
| 59 | */ |
| 60 | private function setCacheDir(string $dirName): void |
| 61 | { |
| 62 | if (! file_exists($dirName)) { |
| 63 | throw new \InvalidArgumentException("Path not found", 0); |
| 64 | } |
| 65 | if (! is_writeable($dirName)) { |
| 66 | throw new \InvalidArgumentException("Path not writable", 1); |
| 67 | } |
| 68 | if (! is_dir($dirName)) { |
| 69 | throw new \InvalidArgumentException("Path not a directory", 2); |
| 70 | } |
| 71 | $this->cacheDir = $dirName; |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * Create a string representation of the options used |
| 76 | * |
| 77 | * @param string[] $options |
| 78 | * Options |
| 79 | * |
| 80 | * @return string |
| 81 | */ |
| 82 | private function options2string(array $options): string |
| 83 | { |
| 84 | $output = array(); |
| 85 | foreach ($options as $option) { |
| 86 | if (strstr($option, 'resize')) { |
| 87 | $option = str_replace('\>', '', $option); |
| 88 | $option = str_replace('\<', '', $option); |
| 89 | } |
| 90 | if (strstr($option, 'crop')) { |
| 91 | $option = str_replace(' +repage', '', $option); |
| 92 | } |
| 93 | $option = trim($option); |
| 94 | $option = str_replace(' ', '_', $option); |
| 95 | $option = str_replace('-', '', $option); |
| 96 | $output[] = $option; |
| 97 | } |
| 98 | return implode('&', $output); |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * Generate cache name |
| 103 | * |
| 104 | * @param string $inputFile |
| 105 | * Path to file |
| 106 | * @param string $outputFile |
| 107 | * Path to file |
| 108 | * @param string[] $options |
| 109 | * Options |
| 110 | * |
| 111 | * @return string |
| 112 | */ |
| 113 | private function cacheName(string $inputFile, string $outputFile, array $options): string |
| 114 | { |
| 115 | $inputFile = str_replace('"', '', $inputFile); |
| 116 | $outputFile = str_replace('"', '', $outputFile); |
| 117 | $ext = pathinfo(basename($outputFile), PATHINFO_EXTENSION); |
| 118 | $filename = $inputFile . $this->options2string($options); |
| 119 | return $this->cacheDir . '/' . md5($filename) . '.' . $ext; |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Check if there exists a cached version of the file |
| 124 | * |
| 125 | * @param string $inputFile |
| 126 | * Path to file |
| 127 | * @param string $outputFile |
| 128 | * Path to file |
| 129 | * @param string[] $options |
| 130 | * Options |
| 131 | * |
| 132 | * @return boolean |
| 133 | */ |
| 134 | public function isCached(string $inputFile, string $outputFile, array $options): bool |
| 135 | { |
| 136 | $filename = $this->cacheName($inputFile, $outputFile, $options); |
| 137 | return file_exists($filename); |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * Get cached version of the file |
| 142 | * |
| 143 | * @param string $inputFile |
| 144 | * Path to file |
| 145 | * @param string $outputFile |
| 146 | * Path to file |
| 147 | * @param string[] $options |
| 148 | * Options |
| 149 | * |
| 150 | * @return string |
| 151 | */ |
| 152 | public function getCached(string $inputFile, string $outputFile, array $options): string |
| 153 | { |
| 154 | return $this->cacheName($inputFile, $outputFile, $options); |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * Set cached version of the file |
| 159 | * |
| 160 | * @param string $inputFile |
| 161 | * Path to file |
| 162 | * @param string $outputFile |
| 163 | * Path to file |
| 164 | * @param string[] $options |
| 165 | * Options |
| 166 | * |
| 167 | * @return void |
| 168 | */ |
| 169 | public function setCache(string $inputFile, string $outputFile, string $options): void |
| 170 | { |
| 171 | $filename = $this->cacheName($inputFile, $outputFile, $options); |
| 172 | file_put_contents($filename, file_get_contents(str_replace('"', '', $outputFile))); |
| 173 | shell_exec('chmod 666 ' . $filename); |
| 174 | } |
| 175 | } |