* * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ class MWP_IncrementalBackup_FileReader { /** * @var int */ private $chunkByteSize = 4096; /** * @return int */ public function getChunkByteSize() { return $this->chunkByteSize; } /** * @param int $chunkByteSize */ public function setChunkByteSize($chunkByteSize) { $this->chunkByteSize = $chunkByteSize; } /** * * * @param string $realPath * @param int $offset * @param int $limit * * @return mixed */ public function readFileContents($realPath, $offset = 0, $limit = 0) { if (!file_exists($realPath)) { return null; } $handle = fopen($realPath, "rb"); if (!$handle) { return null; } $contentLength = 0; $buffer = ''; if ($limit === 0) { $limit = filesize($realPath) - $offset; } if ($offset !== 0) { fseek($handle, $offset); } while ($limit > 0) { $chunkSize = $limit > $this->chunkByteSize ? $this->chunkByteSize : $limit; $limit = $limit - $chunkSize; $contentLength = $contentLength + $chunkSize; $contents = fread($handle, $chunkSize); $buffer = $buffer.$contents; } fclose($handle); return array($buffer, $contentLength); } }