[COMPOSER] Add new php-ffmpeg package

vendor/symfony/stopwatch/Stopwatch.php

@@ -0,0 +1,159 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Stopwatch;
+
+/**
+ * Stopwatch provides a way to profile code.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class Stopwatch
+{
+    /**
+     * @var Section[]
+     */
+    private $sections;
+
+    /**
+     * @var Section[]
+     */
+    private $activeSections;
+
+    public function __construct()
+    {
+        $this->sections = $this->activeSections = array('__root__' => new Section(null));
+    }
+
+    /**
+     * @return Section[]
+     */
+    public function getSections()
+    {
+        return $this->sections;
+    }
+
+    /**
+     * Creates a new section or re-opens an existing section.
+     *
+     * @param string|null $id The id of the session to re-open, null to create a new one
+     *
+     * @throws \LogicException When the section to re-open is not reachable
+     */
+    public function openSection($id = null)
+    {
+        $current = end($this->activeSections);
+
+        if (null !== $id && null === $current->get($id)) {
+            throw new \LogicException(sprintf('The section "%s" has been started at an other level and can not be opened.', $id));
+        }
+
+        $this->start('__section__.child', 'section');
+        $this->activeSections[] = $current->open($id);
+        $this->start('__section__');
+    }
+
+    /**
+     * Stops the last started section.
+     *
+     * The id parameter is used to retrieve the events from this section.
+     *
+     * @see getSectionEvents()
+     *
+     * @param string $id The identifier of the section
+     *
+     * @throws \LogicException When there's no started section to be stopped
+     */
+    public function stopSection($id)
+    {
+        $this->stop('__section__');
+
+        if (1 == \count($this->activeSections)) {
+            throw new \LogicException('There is no started section to stop.');
+        }
+
+        $this->sections[$id] = array_pop($this->activeSections)->setId($id);
+        $this->stop('__section__.child');
+    }
+
+    /**
+     * Starts an event.
+     *
+     * @param string $name     The event name
+     * @param string $category The event category
+     *
+     * @return StopwatchEvent
+     */
+    public function start($name, $category = null)
+    {
+        return end($this->activeSections)->startEvent($name, $category);
+    }
+
+    /**
+     * Checks if the event was started.
+     *
+     * @param string $name The event name
+     *
+     * @return bool
+     */
+    public function isStarted($name)
+    {
+        return end($this->activeSections)->isEventStarted($name);
+    }
+
+    /**
+     * Stops an event.
+     *
+     * @param string $name The event name
+     *
+     * @return StopwatchEvent
+     */
+    public function stop($name)
+    {
+        return end($this->activeSections)->stopEvent($name);
+    }
+
+    /**
+     * Stops then restarts an event.
+     *
+     * @param string $name The event name
+     *
+     * @return StopwatchEvent
+     */
+    public function lap($name)
+    {
+        return end($this->activeSections)->stopEvent($name)->start();
+    }
+
+    /**
+     * Returns a specific event by name.
+     *
+     * @param string $name The event name
+     *
+     * @return StopwatchEvent
+     */
+    public function getEvent($name)
+    {
+        return end($this->activeSections)->getEvent($name);
+    }
+
+    /**
+     * Gets all events for a given section.
+     *
+     * @param string $id A section identifier
+     *
+     * @return StopwatchEvent[]
+     */
+    public function getSectionEvents($id)
+    {
+        return isset($this->sections[$id]) ? $this->sections[$id]->getEvents() : array();
+    }
+}