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<?php |
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namespace kalanis\kw_storage\Storage\Target; |
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use kalanis\kw_storage\Extras\TRemoveCycle; |
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use kalanis\kw_storage\Interfaces\IPassDirs; |
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use kalanis\kw_storage\Interfaces\IStorage; |
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use kalanis\kw_storage\StorageException; |
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use Traversable; |
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/** |
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* Class Volume |
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* @package kalanis\kw_storage\Storage\Target |
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* Store content onto volume |
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*/ |
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class Volume implements IStorage, IPassDirs |
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{ |
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use TOperations; |
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use TRemoveCycle; |
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public function check(string $key): bool |
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{ |
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$sepPos = mb_strrpos($key, DIRECTORY_SEPARATOR); |
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$path = (false === $sepPos) ? substr($key, 0) : substr($key, 0, intval($sepPos)); |
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if (!is_dir($path)) { |
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if (file_exists($path)) { |
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unlink($path); |
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} |
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return mkdir($path, 0777); |
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} |
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return true; |
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} |
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public function exists(string $key): bool |
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{ |
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return file_exists($key); |
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} |
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public function isDir(string $key): bool |
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{ |
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return is_dir($key); |
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} |
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public function mkDir(string $key, bool $recursive = false): bool |
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{ |
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return mkdir($key, 0777, $recursive); |
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} |
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public function rmDir(string $key, bool $recursive = false): bool |
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{ |
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return $recursive ? $this->removeCycle($key) && rmdir($key) : rmdir($key); |
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} |
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public function load(string $key) |
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{ |
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$content = @file_get_contents($key); |
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if (false === $content) { |
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throw new StorageException('Cannot read file'); |
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} |
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return $content; |
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} |
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public function save(string $key, $data, ?int $timeout = null): bool |
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{ |
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return (false !== @file_put_contents($key, strval($data))); |
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} |
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public function remove(string $key): bool |
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{ |
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return @unlink($key); |
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} |
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public function lookup(string $path): Traversable |
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{ |
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$real = realpath($path); |
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if (false === $real) { |
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return; |
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} |
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$files = scandir($real); |
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if (!empty($files)) { |
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foreach ($files as $file) { |
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yield $file; |
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} |
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} |
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} |
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public function increment(string $key, int $step = 1): bool |
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{ |
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try { |
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$number = intval($this->load($key)) + $step; |
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} catch (StorageException $ex) { |
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// no file |
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$number = 1; |
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} |
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$this->remove($key); // hanging pointers |
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return $this->save($key, $number); |
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} |
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public function decrement(string $key, int $step = 1): bool |
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{ |
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try { |
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$number = intval($this->load($key)) - $step; |
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} catch (StorageException $ex) { |
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// no file |
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$number = 0; |
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} |
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$this->remove($key); // hanging pointers |
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return $this->save($key, $number); |
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} |
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} |
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alex-kalanis /
kw_storage
