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<?php |
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namespace Pcelta\VirtualStream; |
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use DateTime; |
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class Stream implements StreamWrapperInterface |
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{ |
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/** |
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* @var string |
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*/ |
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private $content; |
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/** |
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* @var Mode |
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*/ |
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private $mode; |
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/** |
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* @var string |
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*/ |
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private $path; |
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/** |
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* @var int |
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*/ |
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private $pointer; |
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/** |
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* @var string |
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*/ |
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private $contentLeft; |
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/** |
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* @var DateTime |
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*/ |
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private $lastAccess; |
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/** |
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* @var DateTime |
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*/ |
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private $lastModification; |
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const HOST = 'host'; |
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const POINTER_INITIAL_POSITION = 0; |
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const DEFAULT_PROTOCOL = 'virtual'; |
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public function __construct() |
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{ |
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$this->pointer = self::POINTER_INITIAL_POSITION; |
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} |
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public function stream_open(string $path, string $mode, int $options, &$opened_path) |
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{ |
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$this->setLastAccess(); |
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$url = parse_url($path); |
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$this->mode = new Mode($mode); |
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$this->path = $url[self::HOST]; |
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return true; |
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} |
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public function stream_read($count): string |
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{ |
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$this->setLastAccess(); |
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if (!$this->mode->isReading()) { |
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throw new OperationNotPermittedException( |
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1 |
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$this->mode->getMode(), |
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1 |
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OperationNotPermittedException::OPERATION_READING |
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); |
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} |
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$data = substr($this->content, $this->pointer++, $count); |
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$this->contentLeft = str_replace($data, '', $this->contentLeft); |
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return $data; |
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} |
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public function stream_eof(): bool |
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{ |
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return $this->pointer > strlen($this->content); |
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} |
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public function stream_seek(int $position, int $whence = SEEK_SET) |
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{ |
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$this->pointer = $position; |
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} |
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public function stream_write(string $data) |
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{ |
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if (!$this->mode->isWriting()) { |
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throw new OperationNotPermittedException( |
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$this->mode->getMode(), |
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OperationNotPermittedException::OPERATION_WRITING |
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); |
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} |
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$this->setLastModification(); |
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if ($this->mode->isAppending()) { |
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$this->content .= $data; |
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return; |
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} |
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$this->content = $data . $this->content; |
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} |
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public function stream_truncate(int $newSize): bool |
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{ |
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$this->setLastModification(); |
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$this->content = substr($this->content, self::POINTER_INITIAL_POSITION, $newSize); |
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return true; |
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} |
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public function stream_tell() |
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{ |
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return $this->pointer; |
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} |
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public function stream_stat(): array |
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{ |
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return [ |
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0 => 1, |
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1 => '', |
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2 => '', |
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3 => 0, |
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4 => '', |
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5 => '', |
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6 => '', |
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7 => strlen($this->content), |
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8 => '', |
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9 => $this->lastAccess->getTimestamp(), |
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10 => $this->lastModification->getTimestamp(), |
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11 => '', |
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12 => '', |
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]; |
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} |
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public function stream_flush() |
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{ |
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// As this StreamWrapper does not write into a file or anywhere else, this method will not do anything. |
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} |
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public static function register(string $protocol = self::DEFAULT_PROTOCOL): bool |
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{ |
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return stream_wrapper_register($protocol, self::class); |
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} |
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8 |
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public static function unregister(string $protocol = self::DEFAULT_PROTOCOL): bool |
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{ |
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8 |
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return stream_wrapper_unregister($protocol); |
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} |
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9 |
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protected function setLastAccess() |
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{ |
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9 |
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$this->lastAccess = new DateTime(); |
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163
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9 |
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} |
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164
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165
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6 |
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protected function setLastModification() |
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166
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{ |
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167
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6 |
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$this->lastModification = new DateTime(); |
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168
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6 |
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} |
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169
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} |
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pcelta /
virtual-stream
