mirror of https://github.com/nextcloud/server.git
Merge pull request #10548 from nextcloud/fix/10430/update_icewind_streams
Update icewind/streamspull/10595/head
Roeland Jago Douma
6 years ago
committed by
GitHub
commit
7648bb05e9
@ -0,0 +1,106 @@
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<?php
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/**
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* @copyright Copyright (c) 2018 Robin Appelman <robin@icewind.nl>
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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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/**
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* Wrapper that counts the amount of data read and written
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*
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* The following options should be passed in the context when opening the stream
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* [
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* 'callback' => [
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* 'source' => resource
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* 'callback' => function($readCount, $writeCount){}
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* ]
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* ]
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*
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* The callback will be called when the stream is closed
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*/
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class CountWrapper extends Wrapper {
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/**
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* @var int
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*/
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protected $readCount = 0;
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/**
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* @var int
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*/
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protected $writeCount = 0;
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/**
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* @var callable
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*/
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protected $callback;
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/**
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* Wraps a stream with the provided callbacks
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*
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* @param resource $source
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* @param callable $callback
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* @return resource
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*
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* @throws \BadMethodCallException
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*/
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public static function wrap($source, $callback) {
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if (!is_callable($callback)) {
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throw new \InvalidArgumentException('Invalid or missing callback');
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}
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$context = stream_context_create(array(
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'count' => array(
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'source' => $source,
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'callback' => $callback
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)
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));
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return Wrapper::wrapSource($source, $context, 'callback', '\Icewind\Streams\CountWrapper');
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}
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protected function open() {
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$context = $this->loadContext('count');
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$this->callback = $context['callback'];
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return true;
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}
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public function dir_opendir($path, $options) {
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return $this->open();
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}
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public function stream_open($path, $mode, $options, &$opened_path) {
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return $this->open();
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}
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public function stream_read($count) {
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$result = parent::stream_read($count);
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$this->readCount += strlen($result);
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return $result;
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}
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public function stream_write($data) {
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$result = parent::stream_write($data);
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$this->writeCount += strlen($data);
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return $result;
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}
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public function stream_close() {
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$result = parent::stream_close();
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call_user_func($this->callback, $this->readCount, $this->writeCount);
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return $result;
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}
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}
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