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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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abstract class MWP_Stream_Decorator implements MWP_Stream_Interface |
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{ |
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|
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private $initialized = false; |
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|
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/** |
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* @var MWP_Stream_Interface |
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*/ |
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private $stream; |
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|
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public function __construct(MWP_Stream_Interface $stream = null) |
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{ |
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$this->stream = $stream; |
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|
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if ($this->stream) { |
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$this->initialized = true; |
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} |
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} |
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|
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protected function getStream() |
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{ |
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if (!$this->stream) { |
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$this->stream = $this->createStream(); |
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} |
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|
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return $this->stream; |
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} |
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|
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protected function createStream() |
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{ |
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return null; |
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} |
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|
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/** |
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* Closes the stream and any underlying resources. |
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*/ |
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public function close() |
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{ |
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$this->getStream()->close(); |
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} |
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|
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/** |
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* Returns the current position of the file read/write pointer |
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* |
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* @return int|bool Returns the position of the file pointer or false on error |
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*/ |
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public function tell() |
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{ |
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return $this->getStream()->tell(); |
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} |
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|
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/** |
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* @return bool |
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*/ |
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public function isSeekable() |
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{ |
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return $this->getStream()->isSeekable(); |
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} |
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|
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/** |
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* @param int $offset |
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* @param int $whence |
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* |
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* @return bool |
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*/ |
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public function seek($offset, $whence = SEEK_SET) |
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{ |
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return $this->getStream()->seek($offset, $whence); |
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} |
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|
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/** |
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* Returns true if the stream is at the end of the stream. |
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* |
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* @return bool |
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*/ |
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public function eof() |
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{ |
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return $this->getStream()->eof(); |
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} |
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|
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/** |
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* Read data from the stream |
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* |
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* @param int $length Read up to $length bytes from the object and return |
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* them. Fewer than $length bytes may be returned if |
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* underlying stream call returns fewer bytes. |
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* |
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* @return string Returns the data read from the stream. |
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*/ |
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public function read($length) |
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{ |
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return $this->getStream()->read($length); |
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} |
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} |
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|
