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<?php |
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/** |
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* @copyright Copyright (c) 2019, Roeland Jago Douma <[email protected]> |
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* |
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* @author Roeland Jago Douma <[email protected]> |
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* |
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* @license GNU AGPL version 3 or any later version |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License as |
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* published by the Free Software Foundation, either version 3 of the |
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* License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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*/ |
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namespace Icewind\Streams; |
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abstract class HashWrapper extends Wrapper { |
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/** |
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* @var callable |
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*/ |
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private $callback; |
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/** |
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* @var resource |
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*/ |
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private $hashContext; |
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/** |
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* Wraps a stream to make it seekable |
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* |
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* @param resource $source |
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* @param string $hash |
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* @param callable $callback |
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* @return resource|bool |
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* |
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* @throws \BadMethodCallException |
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*/ |
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public static function wrap($source, $hash, $callback) { |
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$context = [ |
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'hash' => $hash, |
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'callback' => $callback, |
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]; |
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return self::wrapSource($source, $context); |
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} |
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public function dir_opendir($path, $options) { |
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return false; |
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} |
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public function stream_open($path, $mode, $options, &$opened_path) { |
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$context = $this->loadContext(); |
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$this->callback = $context['callback']; |
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$this->hashContext = hash_init($context['hash']); |
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return true; |
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} |
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protected function updateHash($data) { |
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hash_update($this->hashContext, $data); |
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} |
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public function stream_close() { |
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$hash = hash_final($this->hashContext); |
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if ($this->hashContext !== false && is_callable($this->callback)) { |
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call_user_func($this->callback, $hash); |
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} |
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return parent::stream_close(); |
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} |
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} |
icewind1991 /
Streams
