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