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<?php |
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namespace kalanis\kw_storage\Storage\Target; |
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use kalanis\kw_storage\StorageException; |
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/** |
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* Class VolumeStream |
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* @package kalanis\kw_storage\Storage\Target |
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* Store content onto volume - streams |
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*/ |
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class VolumeStream extends Volume |
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{ |
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/** |
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* @param string $key |
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* @throws StorageException |
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* @return resource |
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*/ |
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public function load(string $key) |
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{ |
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$content = @fopen($key, 'rb'); |
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$data = @fopen('php://temp', 'r+b'); |
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if ((false === $content) || (false === $data)) { |
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// @codeCoverageIgnoreStart |
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throw new StorageException('Cannot read file'); |
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} |
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// @codeCoverageIgnoreEnd |
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if (false === @stream_copy_to_stream($content, $data)) { |
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// @codeCoverageIgnoreStart |
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throw new StorageException('Cannot read file'); |
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} |
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if (false === @fclose($content)) { |
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// @codeCoverageIgnoreStart |
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throw new StorageException('Cannot close opened file'); |
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} |
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// @codeCoverageIgnoreEnd |
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return $data; |
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} |
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/** |
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* @param string $key |
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* @param resource $data |
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* @param int|null $timeout |
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* @throws StorageException |
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* @return bool |
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*/ |
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public function save(string $key, $data, ?int $timeout = null): bool |
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{ |
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$content = @fopen($key, 'wb'); |
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if (false === $content) { |
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// @codeCoverageIgnoreStart |
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throw new StorageException('Cannot open file'); |
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} |
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// @codeCoverageIgnoreEnd |
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if (false === @stream_copy_to_stream($data, $content, -1, 0)) { |
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// @codeCoverageIgnoreStart |
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throw new StorageException('Cannot save file'); |
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} |
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// @codeCoverageIgnoreEnd |
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if (-1 === @fseek($content, 0)) { |
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// @codeCoverageIgnoreStart |
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throw new StorageException('Cannot seek in file'); |
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} |
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// @codeCoverageIgnoreEnd |
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if (false === @fclose($content)) { |
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// @codeCoverageIgnoreStart |
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throw new StorageException('Cannot close opened file'); |
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} |
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// @codeCoverageIgnoreEnd |
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return true; |
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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(Volume::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 Volume::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(Volume::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 Volume::save($key, $number); |
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} |
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} |
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alex-kalanis /
kw_storage
