Rajout du code core qui n'était pas gitté

core/vendor/symfony/cache/.gitignore

@@ -0,0 +1,3 @@
+composer.lock
+phpunit.xml
+vendor/

core/vendor/symfony/cache/Adapter/AbstractAdapter.php

@@ -0,0 +1,376 @@
+<?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\Cache\Adapter;
+
+use Psr\Cache\CacheItemInterface;
+use Psr\Log\LoggerAwareInterface;
+use Psr\Log\LoggerAwareTrait;
+use Psr\Log\LoggerInterface;
+use Symfony\Component\Cache\CacheItem;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+abstract class AbstractAdapter implements AdapterInterface, LoggerAwareInterface
+{
+    use LoggerAwareTrait;
+
+    private $namespace;
+    private $deferred = array();
+    private $createCacheItem;
+    private $mergeByLifetime;
+
+    protected function __construct($namespace = '', $defaultLifetime = 0)
+    {
+        $this->namespace = '' === $namespace ? '' : $this->getId($namespace);
+        $this->createCacheItem = \Closure::bind(
+            function ($key, $value, $isHit) use ($defaultLifetime) {
+                $item = new CacheItem();
+                $item->key = $key;
+                $item->value = $value;
+                $item->isHit = $isHit;
+                $item->defaultLifetime = $defaultLifetime;
+
+                return $item;
+            },
+            $this,
+            CacheItem::class
+        );
+        $this->mergeByLifetime = \Closure::bind(
+            function ($deferred, $namespace, &$expiredIds) {
+                $byLifetime = array();
+                $now = time();
+                $expiredIds = array();
+
+                foreach ($deferred as $key => $item) {
+                    if (null === $item->expiry) {
+                        $byLifetime[0][$namespace.$key] = $item->value;
+                    } elseif ($item->expiry > $now) {
+                        $byLifetime[$item->expiry - $now][$namespace.$key] = $item->value;
+                    } else {
+                        $expiredIds[] = $namespace.$key;
+                    }
+                }
+
+                return $byLifetime;
+            },
+            $this,
+            CacheItem::class
+        );
+    }
+
+    public static function createSystemCache($namespace, $defaultLifetime, $version, $directory, LoggerInterface $logger = null)
+    {
+        $fs = new FilesystemAdapter($namespace, $defaultLifetime, $directory);
+        if (null !== $logger) {
+            $fs->setLogger($logger);
+        }
+        if (!ApcuAdapter::isSupported()) {
+            return $fs;
+        }
+
+        $apcu = new ApcuAdapter($namespace, $defaultLifetime / 5, $version);
+        if (null !== $logger) {
+            $apcu->setLogger($logger);
+        }
+
+        return new ChainAdapter(array($apcu, $fs));
+    }
+
+    /**
+     * Fetches several cache items.
+     *
+     * @param array $ids The cache identifiers to fetch.
+     *
+     * @return array|\Traversable The corresponding values found in the cache.
+     */
+    abstract protected function doFetch(array $ids);
+
+    /**
+     * Confirms if the cache contains specified cache item.
+     *
+     * @param string $id The identifier for which to check existence.
+     *
+     * @return bool True if item exists in the cache, false otherwise.
+     */
+    abstract protected function doHave($id);
+
+    /**
+     * Deletes all items in the pool.
+     *
+     * @param string The prefix used for all identifiers managed by this pool.
+     *
+     * @return bool True if the pool was successfully cleared, false otherwise.
+     */
+    abstract protected function doClear($namespace);
+
+    /**
+     * Removes multiple items from the pool.
+     *
+     * @param array $ids An array of identifiers that should be removed from the pool.
+     *
+     * @return bool True if the items were successfully removed, false otherwise.
+     */
+    abstract protected function doDelete(array $ids);
+
+    /**
+     * Persists several cache items immediately.
+     *
+     * @param array $values   The values to cache, indexed by their cache identifier.
+     * @param int   $lifetime The lifetime of the cached values, 0 for persisting until manual cleaning.
+     *
+     * @return array|bool The identifiers that failed to be cached or a boolean stating if caching succeeded or not.
+     */
+    abstract protected function doSave(array $values, $lifetime);
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItem($key)
+    {
+        if ($this->deferred) {
+            $this->commit();
+        }
+        $id = $this->getId($key);
+
+        $f = $this->createCacheItem;
+        $isHit = false;
+        $value = null;
+
+        try {
+            foreach ($this->doFetch(array($id)) as $value) {
+                $isHit = true;
+            }
+        } catch (\Exception $e) {
+            CacheItem::log($this->logger, 'Failed to fetch key "{key}"', array('key' => $key, 'exception' => $e));
+        }
+
+        return $f($key, $value, $isHit);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItems(array $keys = array())
+    {
+        if ($this->deferred) {
+            $this->commit();
+        }
+        $ids = array();
+
+        foreach ($keys as $key) {
+            $ids[] = $this->getId($key);
+        }
+        try {
+            $items = $this->doFetch($ids);
+        } catch (\Exception $e) {
+            CacheItem::log($this->logger, 'Failed to fetch requested items', array('keys' => $keys, 'exception' => $e));
+            $items = array();
+        }
+        $ids = array_combine($ids, $keys);
+
+        return $this->generateItems($items, $ids);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasItem($key)
+    {
+        $id = $this->getId($key);
+
+        if (isset($this->deferred[$key])) {
+            $this->commit();
+        }
+
+        try {
+            return $this->doHave($id);
+        } catch (\Exception $e) {
+            CacheItem::log($this->logger, 'Failed to check if key "{key}" is cached', array('key' => $key, 'exception' => $e));
+
+            return false;
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear()
+    {
+        $this->deferred = array();
+
+        try {
+            return $this->doClear($this->namespace);
+        } catch (\Exception $e) {
+            CacheItem::log($this->logger, 'Failed to clear the cache', array('exception' => $e));
+
+            return false;
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItem($key)
+    {
+        return $this->deleteItems(array($key));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItems(array $keys)
+    {
+        $ids = array();
+
+        foreach ($keys as $key) {
+            $ids[$key] = $this->getId($key);
+            unset($this->deferred[$key]);
+        }
+
+        try {
+            if ($this->doDelete($ids)) {
+                return true;
+            }
+        } catch (\Exception $e) {
+        }
+
+        $ok = true;
+
+        // When bulk-delete failed, retry each item individually
+        foreach ($ids as $key => $id) {
+            try {
+                $e = null;
+                if ($this->doDelete(array($id))) {
+                    continue;
+                }
+            } catch (\Exception $e) {
+            }
+            CacheItem::log($this->logger, 'Failed to delete key "{key}"', array('key' => $key, 'exception' => $e));
+            $ok = false;
+        }
+
+        return $ok;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save(CacheItemInterface $item)
+    {
+        if (!$item instanceof CacheItem) {
+            return false;
+        }
+        if ($this->deferred) {
+            $this->commit();
+        }
+        $this->deferred[$item->getKey()] = $item;
+
+        return $this->commit();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function saveDeferred(CacheItemInterface $item)
+    {
+        if (!$item instanceof CacheItem) {
+            return false;
+        }
+        $this->deferred[$item->getKey()] = $item;
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function commit()
+    {
+        $ok = true;
+        $byLifetime = $this->mergeByLifetime;
+        $byLifetime = $byLifetime($this->deferred, $this->namespace, $expiredIds);
+        $retry = $this->deferred = array();
+
+        if ($expiredIds) {
+            $this->doDelete($expiredIds);
+        }
+        foreach ($byLifetime as $lifetime => $values) {
+            try {
+                $e = $this->doSave($values, $lifetime);
+            } catch (\Exception $e) {
+            }
+            if (true === $e || array() === $e) {
+                continue;
+            }
+            if (is_array($e) || 1 === count($values)) {
+                foreach (is_array($e) ? $e : array_keys($values) as $id) {
+                    $ok = false;
+                    $v = $values[$id];
+                    $type = is_object($v) ? get_class($v) : gettype($v);
+                    CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', array('key' => substr($id, strlen($this->namespace)), 'type' => $type, 'exception' => $e instanceof \Exception ? $e : null));
+                }
+            } else {
+                foreach ($values as $id => $v) {
+                    $retry[$lifetime][] = $id;
+                }
+            }
+        }
+
+        // When bulk-save failed, retry each item individually
+        foreach ($retry as $lifetime => $ids) {
+            foreach ($ids as $id) {
+                try {
+                    $v = $byLifetime[$lifetime][$id];
+                    $e = $this->doSave(array($id => $v), $lifetime);
+                } catch (\Exception $e) {
+                }
+                if (true === $e || array() === $e) {
+                    continue;
+                }
+                $ok = false;
+                $type = is_object($v) ? get_class($v) : gettype($v);
+                CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', array('key' => substr($id, strlen($this->namespace)), 'type' => $type, 'exception' => $e instanceof \Exception ? $e : null));
+            }
+        }
+
+        return $ok;
+    }
+
+    public function __destruct()
+    {
+        if ($this->deferred) {
+            $this->commit();
+        }
+    }
+
+    private function getId($key)
+    {
+        CacheItem::validateKey($key);
+
+        return $this->namespace.$key;
+    }
+
+    private function generateItems($items, &$keys)
+    {
+        $f = $this->createCacheItem;
+
+        foreach ($items as $id => $value) {
+            yield $keys[$id] => $f($keys[$id], $value, true);
+            unset($keys[$id]);
+        }
+
+        foreach ($keys as $key) {
+            yield $key => $f($key, null, false);
+        }
+    }
+}

core/vendor/symfony/cache/Adapter/AdapterInterface.php

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+<?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\Cache\Adapter;
+
+use Psr\Cache\CacheItemPoolInterface;
+use Symfony\Component\Cache\CacheItem;
+
+/**
+ * Interface for adapters managing instances of Symfony's {@see CacheItem}.
+ *
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+interface AdapterInterface extends CacheItemPoolInterface
+{
+}

core/vendor/symfony/cache/Adapter/ApcuAdapter.php

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+<?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\Cache\Adapter;
+
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\Exception\CacheException;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class ApcuAdapter extends AbstractAdapter
+{
+    public static function isSupported()
+    {
+        return function_exists('apcu_fetch') && ini_get('apc.enabled') && !('cli' === PHP_SAPI && !ini_get('apc.enable_cli'));
+    }
+
+    public function __construct($namespace = '', $defaultLifetime = 0, $version = null)
+    {
+        if (!static::isSupported()) {
+            throw new CacheException('APCu is not enabled');
+        }
+        if ('cli' === PHP_SAPI) {
+            ini_set('apc.use_request_time', 0);
+        }
+        parent::__construct($namespace, $defaultLifetime);
+
+        if (null !== $version) {
+            CacheItem::validateKey($version);
+
+            if (!apcu_exists($version.':'.$namespace)) {
+                $this->clear($namespace);
+                apcu_add($version.':'.$namespace, null);
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch(array $ids)
+    {
+        return apcu_fetch($ids);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doHave($id)
+    {
+        return apcu_exists($id);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doClear($namespace)
+    {
+        return isset($namespace[0]) && class_exists('APCuIterator', false)
+            ? apcu_delete(new \APCuIterator(sprintf('/^%s/', preg_quote($namespace, '/')), APC_ITER_KEY))
+            : apcu_clear_cache();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete(array $ids)
+    {
+        foreach ($ids as $id) {
+            apcu_delete($id);
+        }
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave(array $values, $lifetime)
+    {
+        try {
+            return array_keys(apcu_store($values, null, $lifetime));
+        } catch (\Error $e) {
+        } catch (\Exception $e) {
+        }
+
+        if (1 === count($values)) {
+            // Workaround https://github.com/krakjoe/apcu/issues/170
+            apcu_delete(key($values));
+        }
+
+        throw $e;
+    }
+}

core/vendor/symfony/cache/Adapter/ArrayAdapter.php

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+<?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\Cache\Adapter;
+
+use Psr\Cache\CacheItemInterface;
+use Psr\Log\LoggerAwareInterface;
+use Psr\Log\LoggerAwareTrait;
+use Symfony\Component\Cache\CacheItem;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class ArrayAdapter implements AdapterInterface, LoggerAwareInterface
+{
+    use LoggerAwareTrait;
+
+    private $storeSerialized;
+    private $values = array();
+    private $expiries = array();
+    private $createCacheItem;
+
+    /**
+     * @param int  $defaultLifetime
+     * @param bool $storeSerialized Disabling serialization can lead to cache corruptions when storing mutable values but increases performance otherwise.
+     */
+    public function __construct($defaultLifetime = 0, $storeSerialized = true)
+    {
+        $this->storeSerialized = $storeSerialized;
+        $this->createCacheItem = \Closure::bind(
+            function ($key, $value, $isHit) use ($defaultLifetime) {
+                $item = new CacheItem();
+                $item->key = $key;
+                $item->value = $value;
+                $item->isHit = $isHit;
+                $item->defaultLifetime = $defaultLifetime;
+
+                return $item;
+            },
+            $this,
+            CacheItem::class
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItem($key)
+    {
+        if (!$isHit = $this->hasItem($key)) {
+            $value = null;
+        } elseif ($this->storeSerialized) {
+            $value = unserialize($this->values[$key]);
+        } else {
+            $value = $this->values[$key];
+        }
+        $f = $this->createCacheItem;
+
+        return $f($key, $value, $isHit);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItems(array $keys = array())
+    {
+        foreach ($keys as $key) {
+            CacheItem::validateKey($key);
+        }
+
+        return $this->generateItems($keys, time());
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasItem($key)
+    {
+        CacheItem::validateKey($key);
+
+        return isset($this->expiries[$key]) && ($this->expiries[$key] >= time() || !$this->deleteItem($key));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear()
+    {
+        $this->values = $this->expiries = array();
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItem($key)
+    {
+        CacheItem::validateKey($key);
+
+        unset($this->values[$key], $this->expiries[$key]);
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItems(array $keys)
+    {
+        foreach ($keys as $key) {
+            $this->deleteItem($key);
+        }
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save(CacheItemInterface $item)
+    {
+        if (!$item instanceof CacheItem) {
+            return false;
+        }
+        $item = (array) $item;
+        $key = $item[CacheItem::CAST_PREFIX.'key'];
+        $value = $item[CacheItem::CAST_PREFIX.'value'];
+        $expiry = $item[CacheItem::CAST_PREFIX.'expiry'];
+
+        if (null !== $expiry && $expiry <= time()) {
+            $this->deleteItem($key);
+
+            return true;
+        }
+        if ($this->storeSerialized) {
+            try {
+                $value = serialize($value);
+            } catch (\Exception $e) {
+                $type = is_object($value) ? get_class($value) : gettype($value);
+                CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', array('key' => $key, 'type' => $type, 'exception' => $e));
+
+                return false;
+            }
+        }
+
+        $this->values[$key] = $value;
+        $this->expiries[$key] = null !== $expiry ? $expiry : PHP_INT_MAX;
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function saveDeferred(CacheItemInterface $item)
+    {
+        return $this->save($item);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function commit()
+    {
+        return true;
+    }
+
+    private function generateItems(array $keys, $now)
+    {
+        $f = $this->createCacheItem;
+
+        foreach ($keys as $key) {
+            if (!$isHit = isset($this->expiries[$key]) && ($this->expiries[$key] >= $now || !$this->deleteItem($key))) {
+                $value = null;
+            } elseif ($this->storeSerialized) {
+                $value = unserialize($this->values[$key]);
+            } else {
+                $value = $this->values[$key];
+            }
+
+            yield $key => $f($key, $value, $isHit);
+        }
+    }
+}

core/vendor/symfony/cache/Adapter/ChainAdapter.php

@@ -0,0 +1,226 @@
+<?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\Cache\Adapter;
+
+use Psr\Cache\CacheItemInterface;
+use Psr\Cache\CacheItemPoolInterface;
+use Symfony\Component\Cache\CacheItem;
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+
+/**
+ * Chains several adapters together.
+ *
+ * Cached items are fetched from the first adapter having them in its data store.
+ * They are saved and deleted in all adapters at once.
+ *
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+class ChainAdapter implements AdapterInterface
+{
+    private $adapters = array();
+    private $saveUp;
+
+    /**
+     * @param CacheItemPoolInterface[] $adapters    The ordered list of adapters used to fetch cached items
+     * @param int                      $maxLifetime The max lifetime of items propagated from lower adapters to upper ones
+     */
+    public function __construct(array $adapters, $maxLifetime = 0)
+    {
+        if (!$adapters) {
+            throw new InvalidArgumentException('At least one adapter must be specified.');
+        }
+
+        foreach ($adapters as $adapter) {
+            if (!$adapter instanceof CacheItemPoolInterface) {
+                throw new InvalidArgumentException(sprintf('The class "%s" does not implement the "%s" interface.', get_class($adapter), CacheItemPoolInterface::class));
+            }
+
+            if ($adapter instanceof AdapterInterface) {
+                $this->adapters[] = $adapter;
+            } else {
+                $this->adapters[] = new ProxyAdapter($adapter);
+            }
+        }
+
+        $this->saveUp = \Closure::bind(
+            function ($adapter, $item) use ($maxLifetime) {
+                $origDefaultLifetime = $item->defaultLifetime;
+
+                if (0 < $maxLifetime && ($origDefaultLifetime <= 0 || $maxLifetime < $origDefaultLifetime)) {
+                    $item->defaultLifetime = $maxLifetime;
+                }
+
+                $adapter->save($item);
+                $item->defaultLifetime = $origDefaultLifetime;
+            },
+            $this,
+            CacheItem::class
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItem($key)
+    {
+        $saveUp = $this->saveUp;
+
+        foreach ($this->adapters as $i => $adapter) {
+            $item = $adapter->getItem($key);
+
+            if ($item->isHit()) {
+                while (0 <= --$i) {
+                    $saveUp($this->adapters[$i], $item);
+                }
+
+                return $item;
+            }
+        }
+
+        return $item;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItems(array $keys = array())
+    {
+        return $this->generateItems($this->adapters[0]->getItems($keys), 0);
+    }
+
+    private function generateItems($items, $adapterIndex)
+    {
+        $missing = array();
+        $nextAdapterIndex = $adapterIndex + 1;
+        $nextAdapter = isset($this->adapters[$nextAdapterIndex]) ? $this->adapters[$nextAdapterIndex] : null;
+
+        foreach ($items as $k => $item) {
+            if (!$nextAdapter || $item->isHit()) {
+                yield $k => $item;
+            } else {
+                $missing[] = $k;
+            }
+        }
+
+        if ($missing) {
+            $saveUp = $this->saveUp;
+            $adapter = $this->adapters[$adapterIndex];
+            $items = $this->generateItems($nextAdapter->getItems($missing), $nextAdapterIndex);
+
+            foreach ($items as $k => $item) {
+                if ($item->isHit()) {
+                    $saveUp($adapter, $item);
+                }
+
+                yield $k => $item;
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasItem($key)
+    {
+        foreach ($this->adapters as $adapter) {
+            if ($adapter->hasItem($key)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear()
+    {
+        $cleared = true;
+
+        foreach ($this->adapters as $adapter) {
+            $cleared = $adapter->clear() && $cleared;
+        }
+
+        return $cleared;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItem($key)
+    {
+        $deleted = true;
+
+        foreach ($this->adapters as $adapter) {
+            $deleted = $adapter->deleteItem($key) && $deleted;
+        }
+
+        return $deleted;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItems(array $keys)
+    {
+        $deleted = true;
+
+        foreach ($this->adapters as $adapter) {
+            $deleted = $adapter->deleteItems($keys) && $deleted;
+        }
+
+        return $deleted;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save(CacheItemInterface $item)
+    {
+        $saved = true;
+
+        foreach ($this->adapters as $adapter) {
+            $saved = $adapter->save($item) && $saved;
+        }
+
+        return $saved;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function saveDeferred(CacheItemInterface $item)
+    {
+        $saved = true;
+
+        foreach ($this->adapters as $adapter) {
+            $saved = $adapter->saveDeferred($item) && $saved;
+        }
+
+        return $saved;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function commit()
+    {
+        $committed = true;
+
+        foreach ($this->adapters as $adapter) {
+            $committed = $adapter->commit() && $committed;
+        }
+
+        return $committed;
+    }
+}

core/vendor/symfony/cache/Adapter/DoctrineAdapter.php

@@ -0,0 +1,78 @@
+<?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\Cache\Adapter;
+
+use Doctrine\Common\Cache\CacheProvider;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class DoctrineAdapter extends AbstractAdapter
+{
+    private $provider;
+
+    public function __construct(CacheProvider $provider, $namespace = '', $defaultLifetime = 0)
+    {
+        parent::__construct('', $defaultLifetime);
+        $this->provider = $provider;
+        $provider->setNamespace($namespace);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch(array $ids)
+    {
+        return $this->provider->fetchMultiple($ids);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doHave($id)
+    {
+        return $this->provider->contains($id);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doClear($namespace)
+    {
+        $namespace = $this->provider->getNamespace();
+
+        return isset($namespace[0])
+            ? $this->provider->deleteAll()
+            : $this->provider->flushAll();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete(array $ids)
+    {
+        $ok = true;
+        foreach ($ids as $id) {
+            $ok = $this->provider->delete($id) && $ok;
+        }
+
+        return $ok;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave(array $values, $lifetime)
+    {
+        return $this->provider->saveMultiple($values, $lifetime);
+    }
+}

core/vendor/symfony/cache/Adapter/FilesystemAdapter.php

@@ -0,0 +1,158 @@
+<?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\Cache\Adapter;
+
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class FilesystemAdapter extends AbstractAdapter
+{
+    private $directory;
+
+    public function __construct($namespace = '', $defaultLifetime = 0, $directory = null)
+    {
+        parent::__construct('', $defaultLifetime);
+
+        if (!isset($directory[0])) {
+            $directory = sys_get_temp_dir().'/symfony-cache';
+        }
+        if (isset($namespace[0])) {
+            if (preg_match('#[^-+_.A-Za-z0-9]#', $namespace, $match)) {
+                throw new InvalidArgumentException(sprintf('FilesystemAdapter namespace contains "%s" but only characters in [-+_.A-Za-z0-9] are allowed.', $match[0]));
+            }
+            $directory .= '/'.$namespace;
+        }
+        if (!file_exists($dir = $directory.'/.')) {
+            @mkdir($directory, 0777, true);
+        }
+        if (false === $dir = realpath($dir)) {
+            throw new InvalidArgumentException(sprintf('Cache directory does not exist (%s)', $directory));
+        }
+        if (!is_writable($dir .= DIRECTORY_SEPARATOR)) {
+            throw new InvalidArgumentException(sprintf('Cache directory is not writable (%s)', $directory));
+        }
+        // On Windows the whole path is limited to 258 chars
+        if ('\\' === DIRECTORY_SEPARATOR && strlen($dir) > 234) {
+            throw new InvalidArgumentException(sprintf('Cache directory too long (%s)', $directory));
+        }
+
+        $this->directory = $dir;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch(array $ids)
+    {
+        $values = array();
+        $now = time();
+
+        foreach ($ids as $id) {
+            $file = $this->getFile($id);
+            if (!$h = @fopen($file, 'rb')) {
+                continue;
+            }
+            if ($now >= (int) $expiresAt = fgets($h)) {
+                fclose($h);
+                if (isset($expiresAt[0])) {
+                    @unlink($file);
+                }
+            } else {
+                $i = rawurldecode(rtrim(fgets($h)));
+                $value = stream_get_contents($h);
+                fclose($h);
+                if ($i === $id) {
+                    $values[$id] = unserialize($value);
+                }
+            }
+        }
+
+        return $values;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doHave($id)
+    {
+        $file = $this->getFile($id);
+
+        return file_exists($file) && (@filemtime($file) > time() || $this->doFetch(array($id)));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doClear($namespace)
+    {
+        $ok = true;
+
+        foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($this->directory, \FilesystemIterator::SKIP_DOTS)) as $file) {
+            $ok = ($file->isDir() || @unlink($file) || !file_exists($file)) && $ok;
+        }
+
+        return $ok;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete(array $ids)
+    {
+        $ok = true;
+
+        foreach ($ids as $id) {
+            $file = $this->getFile($id);
+            $ok = (!file_exists($file) || @unlink($file) || !file_exists($file)) && $ok;
+        }
+
+        return $ok;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave(array $values, $lifetime)
+    {
+        $ok = true;
+        $expiresAt = $lifetime ? time() + $lifetime : PHP_INT_MAX;
+        $tmp = $this->directory.uniqid('', true);
+
+        foreach ($values as $id => $value) {
+            $file = $this->getFile($id, true);
+
+            $value = $expiresAt."\n".rawurlencode($id)."\n".serialize($value);
+            if (false !== @file_put_contents($tmp, $value)) {
+                @touch($tmp, $expiresAt);
+                $ok = @rename($tmp, $file) && $ok;
+            } else {
+                $ok = false;
+            }
+        }
+
+        return $ok;
+    }
+
+    private function getFile($id, $mkdir = false)
+    {
+        $hash = str_replace('/', '-', base64_encode(md5($id, true)));
+        $dir = $this->directory.$hash[0].DIRECTORY_SEPARATOR.$hash[1].DIRECTORY_SEPARATOR;
+
+        if ($mkdir && !file_exists($dir)) {
+            @mkdir($dir, 0777, true);
+        }
+
+        return $dir.substr($hash, 2, -2);
+    }
+}

core/vendor/symfony/cache/Adapter/ProxyAdapter.php

@@ -0,0 +1,168 @@
+<?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\Cache\Adapter;
+
+use Psr\Cache\CacheItemInterface;
+use Psr\Cache\CacheItemPoolInterface;
+use Symfony\Component\Cache\CacheItem;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class ProxyAdapter implements AdapterInterface
+{
+    private $pool;
+    private $namespace;
+    private $namespaceLen;
+    private $createCacheItem;
+
+    public function __construct(CacheItemPoolInterface $pool, $namespace = '', $defaultLifetime = 0)
+    {
+        $this->pool = $pool;
+        $this->namespace = '' === $namespace ? '' : $this->getId($namespace);
+        $this->namespaceLen = strlen($namespace);
+        $this->createCacheItem = \Closure::bind(
+            function ($key, $value, $isHit) use ($defaultLifetime) {
+                $item = new CacheItem();
+                $item->key = $key;
+                $item->value = $value;
+                $item->isHit = $isHit;
+                $item->defaultLifetime = $defaultLifetime;
+
+                return $item;
+            },
+            $this,
+            CacheItem::class
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItem($key)
+    {
+        $f = $this->createCacheItem;
+        $item = $this->pool->getItem($this->getId($key));
+
+        return $f($key, $item->get(), $item->isHit());
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getItems(array $keys = array())
+    {
+        if ($this->namespaceLen) {
+            foreach ($keys as $i => $key) {
+                $keys[$i] = $this->getId($key);
+            }
+        }
+
+        return $this->generateItems($this->pool->getItems($keys));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasItem($key)
+    {
+        return $this->pool->hasItem($this->getId($key));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function clear()
+    {
+        return $this->pool->clear();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItem($key)
+    {
+        return $this->pool->deleteItem($this->getId($key));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function deleteItems(array $keys)
+    {
+        if ($this->namespaceLen) {
+            foreach ($keys as $i => $key) {
+                $keys[$i] = $this->getId($key);
+            }
+        }
+
+        return $this->pool->deleteItems($keys);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save(CacheItemInterface $item)
+    {
+        return $this->doSave($item, __FUNCTION__);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function saveDeferred(CacheItemInterface $item)
+    {
+        return $this->doSave($item, __FUNCTION__);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function commit()
+    {
+        return $this->pool->commit();
+    }
+
+    private function doSave(CacheItemInterface $item, $method)
+    {
+        if (!$item instanceof CacheItem) {
+            return false;
+        }
+        $item = (array) $item;
+        $expiry = $item[CacheItem::CAST_PREFIX.'expiry'];
+        $poolItem = $this->pool->getItem($this->namespace.$item[CacheItem::CAST_PREFIX.'key']);
+        $poolItem->set($item[CacheItem::CAST_PREFIX.'value']);
+        $poolItem->expiresAt(null !== $expiry ? \DateTime::createFromFormat('U', $expiry) : null);
+
+        return $this->pool->$method($poolItem);
+    }
+
+    private function generateItems($items)
+    {
+        $f = $this->createCacheItem;
+
+        foreach ($items as $key => $item) {
+            if ($this->namespaceLen) {
+                $key = substr($key, $this->namespaceLen);
+            }
+
+            yield $key => $f($key, $item->get(), $item->isHit());
+        }
+    }
+
+    private function getId($key)
+    {
+        CacheItem::validateKey($key);
+
+        return $this->namespace.$key;
+    }
+}

core/vendor/symfony/cache/Adapter/RedisAdapter.php

@@ -0,0 +1,294 @@
+<?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\Cache\Adapter;
+
+use Predis\Connection\Factory;
+use Predis\Connection\Aggregate\PredisCluster;
+use Predis\Connection\Aggregate\RedisCluster;
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+
+/**
+ * @author Aurimas Niekis <aurimas@niekis.lt>
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class RedisAdapter extends AbstractAdapter
+{
+    private static $defaultConnectionOptions = array(
+        'class' => null,
+        'persistent' => 0,
+        'timeout' => 0,
+        'read_timeout' => 0,
+        'retry_interval' => 0,
+    );
+    private $redis;
+
+    /**
+     * @param \Redis|\RedisArray|\RedisCluster|\Predis\Client $redisClient
+     */
+    public function __construct($redisClient, $namespace = '', $defaultLifetime = 0)
+    {
+        parent::__construct($namespace, $defaultLifetime);
+
+        if (preg_match('#[^-+_.A-Za-z0-9]#', $namespace, $match)) {
+            throw new InvalidArgumentException(sprintf('RedisAdapter namespace contains "%s" but only characters in [-+_.A-Za-z0-9] are allowed.', $match[0]));
+        }
+        if (!$redisClient instanceof \Redis && !$redisClient instanceof \RedisArray && !$redisClient instanceof \RedisCluster && !$redisClient instanceof \Predis\Client) {
+            throw new InvalidArgumentException(sprintf('%s() expects parameter 1 to be Redis, RedisArray, RedisCluster or Predis\Client, %s given', __METHOD__, is_object($redisClient) ? get_class($redisClient) : gettype($redisClient)));
+        }
+        $this->redis = $redisClient;
+    }
+
+    /**
+     * Creates a Redis connection using a DSN configuration.
+     *
+     * Example DSN:
+     *   - redis://localhost
+     *   - redis://example.com:1234
+     *   - redis://secret@example.com/13
+     *   - redis:///var/run/redis.sock
+     *   - redis://secret@/var/run/redis.sock/13
+     *
+     * @param string $dsn
+     * @param array  $options See self::$defaultConnectionOptions
+     *
+     * @throws InvalidArgumentException When the DSN is invalid.
+     *
+     * @return \Redis|\Predis\Client According to the "class" option.
+     */
+    public static function createConnection($dsn, array $options = array())
+    {
+        if (0 !== strpos($dsn, 'redis://')) {
+            throw new InvalidArgumentException(sprintf('Invalid Redis DSN: %s does not start with "redis://"', $dsn));
+        }
+        $params = preg_replace_callback('#^redis://(?:([^@]*)@)?#', function ($m) use (&$auth) {
+            if (isset($m[1])) {
+                $auth = $m[1];
+            }
+
+            return 'file://';
+        }, $dsn);
+        if (false === $params = parse_url($params)) {
+            throw new InvalidArgumentException(sprintf('Invalid Redis DSN: %s', $dsn));
+        }
+        if (!isset($params['host']) && !isset($params['path'])) {
+            throw new InvalidArgumentException(sprintf('Invalid Redis DSN: %s', $dsn));
+        }
+        if (isset($params['path']) && preg_match('#/(\d+)$#', $params['path'], $m)) {
+            $params['dbindex'] = $m[1];
+            $params['path'] = substr($params['path'], 0, -strlen($m[0]));
+        }
+        $params += array(
+            'host' => isset($params['host']) ? $params['host'] : $params['path'],
+            'port' => isset($params['host']) ? 6379 : null,
+            'dbindex' => 0,
+        );
+        if (isset($params['query'])) {
+            parse_str($params['query'], $query);
+            $params += $query;
+        }
+        $params += $options + self::$defaultConnectionOptions;
+        $class = null === $params['class'] ? (extension_loaded('redis') ? \Redis::class : \Predis\Client::class) : $params['class'];
+
+        if (is_a($class, \Redis::class, true)) {
+            $connect = empty($params['persistent']) ? 'connect' : 'pconnect';
+            $redis = new $class();
+            @$redis->{$connect}($params['host'], $params['port'], $params['timeout'], null, $params['retry_interval']);
+
+            if (@!$redis->isConnected()) {
+                $e = ($e = error_get_last()) && preg_match('/^Redis::p?connect\(\): (.*)/', $e['message'], $e) ? sprintf(' (%s)', $e[1]) : '';
+                throw new InvalidArgumentException(sprintf('Redis connection failed%s: %s', $e, $dsn));
+            }
+
+            if ((null !== $auth && !$redis->auth($auth))
+                || ($params['dbindex'] && !$redis->select($params['dbindex']))
+                || ($params['read_timeout'] && !$redis->setOption(\Redis::OPT_READ_TIMEOUT, $params['read_timeout']))
+            ) {
+                $e = preg_replace('/^ERR /', '', $redis->getLastError());
+                throw new InvalidArgumentException(sprintf('Redis connection failed (%s): %s', $e, $dsn));
+            }
+        } elseif (is_a($class, \Predis\Client::class, true)) {
+            $params['scheme'] = isset($params['host']) ? 'tcp' : 'unix';
+            $params['database'] = $params['dbindex'] ?: null;
+            $params['password'] = $auth;
+            $redis = new $class((new Factory())->create($params));
+        } elseif (class_exists($class, false)) {
+            throw new InvalidArgumentException(sprintf('"%s" is not a subclass of "Redis" or "Predis\Client"', $class));
+        } else {
+            throw new InvalidArgumentException(sprintf('Class "%s" does not exist', $class));
+        }
+
+        return $redis;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch(array $ids)
+    {
+        $result = array();
+
+        if ($ids) {
+            $values = $this->redis->mGet($ids);
+            $index = 0;
+            foreach ($ids as $id) {
+                if ($value = $values[$index++]) {
+                    $result[$id] = unserialize($value);
+                }
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doHave($id)
+    {
+        return (bool) $this->redis->exists($id);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doClear($namespace)
+    {
+        // When using a native Redis cluster, clearing the cache cannot work and always returns false.
+        // Clearing the cache should then be done by any other means (e.g. by restarting the cluster).
+
+        $hosts = array($this->redis);
+        $evalArgs = array(array($namespace), 0);
+
+        if ($this->redis instanceof \Predis\Client) {
+            $evalArgs = array(0, $namespace);
+
+            $connection = $this->redis->getConnection();
+            if ($connection instanceof PredisCluster) {
+                $hosts = array();
+                foreach ($connection as $c) {
+                    $hosts[] = new \Predis\Client($c);
+                }
+            } elseif ($connection instanceof RedisCluster) {
+                return false;
+            }
+        } elseif ($this->redis instanceof \RedisArray) {
+            foreach ($this->redis->_hosts() as $host) {
+                $hosts[] = $this->redis->_instance($host);
+            }
+        } elseif ($this->redis instanceof \RedisCluster) {
+            return false;
+        }
+        foreach ($hosts as $host) {
+            if (!isset($namespace[0])) {
+                $host->flushDb();
+            } else {
+                // As documented in Redis documentation (http://redis.io/commands/keys) using KEYS
+                // can hang your server when it is executed against large databases (millions of items).
+                // Whenever you hit this scale, it is advised to deploy one Redis database per cache pool
+                // instead of using namespaces, so that FLUSHDB is used instead.
+                $host->eval("local keys=redis.call('KEYS',ARGV[1]..'*') for i=1,#keys,5000 do redis.call('DEL',unpack(keys,i,math.min(i+4999,#keys))) end", $evalArgs[0], $evalArgs[1]);
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete(array $ids)
+    {
+        if ($ids) {
+            $this->redis->del($ids);
+        }
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave(array $values, $lifetime)
+    {
+        $serialized = array();
+        $failed = array();
+
+        foreach ($values as $id => $value) {
+            try {
+                $serialized[$id] = serialize($value);
+            } catch (\Exception $e) {
+                $failed[] = $id;
+            }
+        }
+
+        if (!$serialized) {
+            return $failed;
+        }
+
+        if (0 >= $lifetime) {
+            $this->redis->mSet($serialized);
+
+            return $failed;
+        }
+
+        $this->pipeline(function ($pipe) use (&$serialized, $lifetime) {
+            foreach ($serialized as $id => $value) {
+                $pipe('setEx', $id, array($lifetime, $value));
+            }
+        });
+
+        return $failed;
+    }
+
+    private function execute($command, $id, array $args, $redis = null)
+    {
+        array_unshift($args, $id);
+        call_user_func_array(array($redis ?: $this->redis, $command), $args);
+    }
+
+    private function pipeline(\Closure $callback)
+    {
+        $redis = $this->redis;
+
+        try {
+            if ($redis instanceof \Predis\Client) {
+                $redis->pipeline(function ($pipe) use ($callback) {
+                    $this->redis = $pipe;
+                    $callback(array($this, 'execute'));
+                });
+            } elseif ($redis instanceof \RedisArray) {
+                $connections = array();
+                $callback(function ($command, $id, $args) use (&$connections) {
+                    if (!isset($connections[$h = $this->redis->_target($id)])) {
+                        $connections[$h] = $this->redis->_instance($h);
+                        $connections[$h]->multi(\Redis::PIPELINE);
+                    }
+                    $this->execute($command, $id, $args, $connections[$h]);
+                });
+                foreach ($connections as $c) {
+                    $c->exec();
+                }
+            } else {
+                $pipe = $redis->multi(\Redis::PIPELINE);
+                try {
+                    $callback(array($this, 'execute'));
+                } finally {
+                    if ($pipe) {
+                        $redis->exec();
+                    }
+                }
+            }
+        } finally {
+            $this->redis = $redis;
+        }
+    }
+}

core/vendor/symfony/cache/CacheItem.php

@@ -0,0 +1,141 @@
+<?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\Cache;
+
+use Psr\Cache\CacheItemInterface;
+use Psr\Log\LoggerInterface;
+use Symfony\Component\Cache\Exception\InvalidArgumentException;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+final class CacheItem implements CacheItemInterface
+{
+    /**
+     * @internal
+     */
+    const CAST_PREFIX = "\0Symfony\Component\Cache\CacheItem\0";
+
+    private $key;
+    private $value;
+    private $isHit;
+    private $expiry;
+    private $defaultLifetime;
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getKey()
+    {
+        return $this->key;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get()
+    {
+        return $this->value;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function isHit()
+    {
+        return $this->isHit;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function set($value)
+    {
+        $this->value = $value;
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function expiresAt($expiration)
+    {
+        if (null === $expiration) {
+            $this->expiry = $this->defaultLifetime > 0 ? time() + $this->defaultLifetime : null;
+        } elseif ($expiration instanceof \DateTimeInterface) {
+            $this->expiry = (int) $expiration->format('U');
+        } else {
+            throw new InvalidArgumentException(sprintf('Expiration date must implement DateTimeInterface or be null, "%s" given', is_object($expiration) ? get_class($expiration) : gettype($expiration)));
+        }
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function expiresAfter($time)
+    {
+        if (null === $time) {
+            $this->expiry = $this->defaultLifetime > 0 ? time() + $this->defaultLifetime : null;
+        } elseif ($time instanceof \DateInterval) {
+            $this->expiry = (int) \DateTime::createFromFormat('U', time())->add($time)->format('U');
+        } elseif (is_int($time)) {
+            $this->expiry = $time + time();
+        } else {
+            throw new InvalidArgumentException(sprintf('Expiration date must be an integer, a DateInterval or null, "%s" given', is_object($time) ? get_class($time) : gettype($time)));
+        }
+
+        return $this;
+    }
+
+    /**
+     * Validates a cache key according to PSR-6.
+     *
+     * @param string $key The key to validate.
+     *
+     * @throws InvalidArgumentException When $key is not valid.
+     */
+    public static function validateKey($key)
+    {
+        if (!is_string($key)) {
+            throw new InvalidArgumentException(sprintf('Cache key must be string, "%s" given', is_object($key) ? get_class($key) : gettype($key)));
+        }
+        if (!isset($key[0])) {
+            throw new InvalidArgumentException('Cache key length must be greater than zero');
+        }
+        if (isset($key[strcspn($key, '{}()/\@:')])) {
+            throw new InvalidArgumentException(sprintf('Cache key "%s" contains reserved characters {}()/\@:', $key));
+        }
+    }
+
+    /**
+     * Internal logging helper.
+     *
+     * @internal
+     */
+    public static function log(LoggerInterface $logger = null, $message, $context = array())
+    {
+        if ($logger) {
+            $logger->warning($message, $context);
+        } else {
+            $replace = array();
+            foreach ($context as $k => $v) {
+                if (is_scalar($v)) {
+                    $replace['{'.$k.'}'] = $v;
+                }
+            }
+            @trigger_error(strtr($message, $replace), E_USER_WARNING);
+        }
+    }
+}

core/vendor/symfony/cache/DoctrineProvider.php

@@ -0,0 +1,83 @@
+<?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\Cache;
+
+use Doctrine\Common\Cache\CacheProvider;
+use Psr\Cache\CacheItemPoolInterface;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class DoctrineProvider extends CacheProvider
+{
+    private $pool;
+
+    public function __construct(CacheItemPoolInterface $pool)
+    {
+        $this->pool = $pool;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch($id)
+    {
+        $item = $this->pool->getItem(rawurlencode($id));
+
+        return $item->isHit() ? $item->get() : false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doContains($id)
+    {
+        return $this->pool->hasItem(rawurlencode($id));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave($id, $data, $lifeTime = 0)
+    {
+        $item = $this->pool->getItem(rawurlencode($id));
+
+        if (0 < $lifeTime) {
+            $item->expiresAfter($lifeTime);
+        }
+
+        return $this->pool->save($item->set($data));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete($id)
+    {
+        return $this->pool->deleteItem(rawurlencode($id));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFlush()
+    {
+        $this->pool->clear();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doGetStats()
+    {
+    }
+}

core/vendor/symfony/cache/Exception/CacheException.php

@@ -0,0 +1,18 @@
+<?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\Cache\Exception;
+
+use Psr\Cache\CacheException as CacheExceptionInterface;
+
+class CacheException extends \Exception implements CacheExceptionInterface
+{
+}

core/vendor/symfony/cache/Exception/InvalidArgumentException.php

@@ -0,0 +1,18 @@
+<?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\Cache\Exception;
+
+use Psr\Cache\InvalidArgumentException as InvalidArgumentExceptionInterface;
+
+class InvalidArgumentException extends \InvalidArgumentException implements InvalidArgumentExceptionInterface
+{
+}

core/vendor/symfony/cache/LICENSE

@@ -0,0 +1,19 @@
+Copyright (c) 2016 Fabien Potencier
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

core/vendor/symfony/cache/README.md

@@ -0,0 +1,9 @@
+Symfony PSR-6 implementation for caching
+========================================
+
+This component provides a strict [PSR-6](http://www.php-fig.org/psr/psr-6/)
+implementation for adding cache to your applications. It is designed to have a
+low overhead so that caching is fastest. It ships with a few caching adapters
+for the most widespread and suited to caching backends. It also provides a
+`doctrine/cache` proxy adapter to cover more advanced caching needs and a proxy
+adapter for greater interoperability between PSR-6 implementations.

core/vendor/symfony/cache/Tests/Adapter/AbstractRedisAdapterTest.php

@@ -0,0 +1,46 @@
+<?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\Cache\Tests\Adapter;
+
+use Cache\IntegrationTests\CachePoolTest;
+use Symfony\Component\Cache\Adapter\RedisAdapter;
+
+abstract class AbstractRedisAdapterTest extends CachePoolTest
+{
+    protected static $redis;
+
+    public function createCachePool()
+    {
+        if (defined('HHVM_VERSION')) {
+            $this->skippedTests['testDeferredSaveWithoutCommit'] = 'Fails on HHVM';
+        }
+
+        return new RedisAdapter(self::$redis, str_replace('\\', '.', __CLASS__));
+    }
+
+    public static function setupBeforeClass()
+    {
+        if (!extension_loaded('redis')) {
+            self::markTestSkipped('Extension redis required.');
+        }
+        if (!@((new \Redis())->connect('127.0.0.1'))) {
+            $e = error_get_last();
+            self::markTestSkipped($e['message']);
+        }
+    }
+
+    public static function tearDownAfterClass()
+    {
+        self::$redis->flushDB();
+        self::$redis = null;
+    }
+}

core/vendor/symfony/cache/Tests/Adapter/ApcuAdapterTest.php

@@ -0,0 +1,71 @@
+<?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\Cache\Tests\Adapter;
+
+use Cache\IntegrationTests\CachePoolTest;
+use Symfony\Component\Cache\Adapter\ApcuAdapter;
+
+class ApcuAdapterTest extends CachePoolTest
+{
+    public function createCachePool()
+    {
+        if (defined('HHVM_VERSION')) {
+            $this->skippedTests['testDeferredSaveWithoutCommit'] = 'Fails on HHVM';
+        }
+        if (!function_exists('apcu_fetch') || !ini_get('apc.enabled') || ('cli' === PHP_SAPI && !ini_get('apc.enable_cli'))) {
+            $this->markTestSkipped('APCu extension is required.');
+        }
+        if ('\\' === DIRECTORY_SEPARATOR) {
+            $this->markTestSkipped('Fails transiently on Windows.');
+        }
+
+        return new ApcuAdapter(str_replace('\\', '.', __CLASS__));
+    }
+
+    public function testUnserializable()
+    {
+        $pool = $this->createCachePool();
+
+        $item = $pool->getItem('foo');
+        $item->set(function () {});
+
+        $this->assertFalse($pool->save($item));
+
+        $item = $pool->getItem('foo');
+        $this->assertFalse($item->isHit());
+    }
+
+    public function testVersion()
+    {
+        $namespace = str_replace('\\', '.', __CLASS__);
+
+        $pool1 = new ApcuAdapter($namespace, 0, 'p1');
+
+        $item = $pool1->getItem('foo');
+        $this->assertFalse($item->isHit());
+        $this->assertTrue($pool1->save($item->set('bar')));
+
+        $item = $pool1->getItem('foo');
+        $this->assertTrue($item->isHit());
+        $this->assertSame('bar', $item->get());
+
+        $pool2 = new ApcuAdapter($namespace, 0, 'p2');
+
+        $item = $pool2->getItem('foo');
+        $this->assertFalse($item->isHit());
+        $this->assertNull($item->get());
+
+        $item = $pool1->getItem('foo');
+        $this->assertFalse($item->isHit());
+        $this->assertNull($item->get());
+    }
+}

core/vendor/symfony/cache/Tests/Adapter/ArrayAdapterTest.php

@@ -0,0 +1,31 @@
+<?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\Cache\Tests\Adapter;
+
+use Cache\IntegrationTests\CachePoolTest;
+use Symfony\Component\Cache\Adapter\ArrayAdapter;
+
+/**
+ * @group time-sensitive
+ */
+class ArrayAdapterTest extends CachePoolTest
+{
+    protected $skippedTests = array(
+        'testDeferredSaveWithoutCommit' => 'Assumes a shared cache which ArrayAdapter is not.',
+        'testSaveWithoutExpire' => 'Assumes a shared cache which ArrayAdapter is not.',
+    );
+
+    public function createCachePool()
+    {
+        return new ArrayAdapter();
+    }
+}

core/vendor/symfony/cache/Tests/Adapter/ChainAdapterTest.php

@@ -0,0 +1,51 @@
+<?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\Cache\Tests\Adapter;
+
+use Cache\IntegrationTests\CachePoolTest;
+use Symfony\Component\Cache\Adapter\FilesystemAdapter;
+use Symfony\Component\Cache\Adapter\ArrayAdapter;
+use Symfony\Component\Cache\Adapter\ChainAdapter;
+use Symfony\Component\Cache\Tests\Fixtures\ExternalAdapter;
+
+/**
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+class ChainAdapterTest extends CachePoolTest
+{
+    public function createCachePool()
+    {
+        if (defined('HHVM_VERSION')) {
+            $this->skippedTests['testDeferredSaveWithoutCommit'] = 'Fails on HHVM';
+        }
+
+        return new ChainAdapter(array(new ArrayAdapter(), new ExternalAdapter(), new FilesystemAdapter()));
+    }
+
+    /**
+     * @expectedException \Symfony\Component\Cache\Exception\InvalidArgumentException
+     * @expectedExceptionMessage At least one adapter must be specified.
+     */
+    public function testEmptyAdaptersException()
+    {
+        new ChainAdapter(array());
+    }
+
+    /**
+     * @expectedException \Symfony\Component\Cache\Exception\InvalidArgumentException
+     * @expectedExceptionMessage The class "stdClass" does not implement
+     */
+    public function testInvalidAdapterException()
+    {
+        new ChainAdapter(array(new \stdClass()));
+    }
+}

core/vendor/symfony/cache/Tests/Adapter/DoctrineAdapterTest.php

@@ -0,0 +1,32 @@
+<?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\Cache\Tests\Adapter;
+
+use Cache\IntegrationTests\CachePoolTest;
+use Doctrine\Common\Cache\ArrayCache;
+use Symfony\Component\Cache\Adapter\DoctrineAdapter;
+
+/**
+ * @group time-sensitive
+ */
+class DoctrineAdapterTest extends CachePoolTest
+{
+    protected $skippedTests = array(
+        'testDeferredSaveWithoutCommit' => 'Assumes a shared cache which ArrayCache is not.',
+        'testSaveWithoutExpire' => 'Assumes a shared cache which ArrayCache is not.',
+    );
+
+    public function createCachePool()
+    {
+        return new DoctrineAdapter(new ArrayCache());
+    }
+}

core/vendor/symfony/cache/Tests/Adapter/FilesystemAdapterTest.php

@@ -0,0 +1,57 @@
+<?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\Cache\Tests\Adapter;
+
+use Cache\IntegrationTests\CachePoolTest;
+use Symfony\Component\Cache\Adapter\FilesystemAdapter;
+
+/**
+ * @group time-sensitive
+ */
+class FilesystemAdapterTest extends CachePoolTest
+{
+    public function createCachePool()
+    {
+        if (defined('HHVM_VERSION')) {
+            $this->skippedTests['testDeferredSaveWithoutCommit'] = 'Fails on HHVM';
+        }
+
+        return new FilesystemAdapter('sf-cache');
+    }
+
+    public static function tearDownAfterClass()
+    {
+        self::rmdir(sys_get_temp_dir().'/symfony-cache');
+    }
+
+    public static function rmdir($dir)
+    {
+        if (!file_exists($dir)) {
+            return;
+        }
+        if (!$dir || 0 !== strpos(dirname($dir), sys_get_temp_dir())) {
+            throw new \Exception(__METHOD__."() operates only on subdirs of system's temp dir");
+        }
+        $children = new \RecursiveIteratorIterator(
+            new \RecursiveDirectoryIterator($dir, \RecursiveDirectoryIterator::SKIP_DOTS),
+            \RecursiveIteratorIterator::CHILD_FIRST
+        );
+        foreach ($children as $child) {
+            if ($child->isDir()) {
+                rmdir($child);
+            } else {
+                unlink($child);
+            }
+        }
+        rmdir($dir);
+    }
+}

core/vendor/symfony/cache/Tests/Adapter/NamespacedProxyAdapterTest.php

@@ -0,0 +1,26 @@
+<?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\Cache\Tests\Adapter;
+
+use Symfony\Component\Cache\Adapter\ArrayAdapter;
+use Symfony\Component\Cache\Adapter\ProxyAdapter;
+
+/**
+ * @group time-sensitive
+ */
+class NamespacedProxyAdapterTest extends ProxyAdapterTest
+{
+    public function createCachePool()
+    {
+        return new ProxyAdapter(new ArrayAdapter(), 'foo');
+    }
+}

core/vendor/symfony/cache/Tests/Adapter/PredisAdapterTest.php

@@ -0,0 +1,49 @@
+<?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\Cache\Tests\Adapter;
+
+use Predis\Connection\StreamConnection;
+use Symfony\Component\Cache\Adapter\RedisAdapter;
+
+class PredisAdapterTest extends AbstractRedisAdapterTest
+{
+    public static function setupBeforeClass()
+    {
+        parent::setupBeforeClass();
+        self::$redis = new \Predis\Client();
+    }
+
+    public function testCreateConnection()
+    {
+        $redis = RedisAdapter::createConnection('redis://localhost/1', array('class' => \Predis\Client::class, 'timeout' => 3));
+        $this->assertInstanceOf(\Predis\Client::class, $redis);
+
+        $connection = $redis->getConnection();
+        $this->assertInstanceOf(StreamConnection::class, $connection);
+
+        $params = array(
+            'scheme' => 'tcp',
+            'host' => 'localhost',
+            'path' => '',
+            'dbindex' => '1',
+            'port' => 6379,
+            'class' => 'Predis\Client',
+            'timeout' => 3,
+            'persistent' => 0,
+            'read_timeout' => 0,
+            'retry_interval' => 0,
+            'database' => '1',
+            'password' => null,
+        );
+        $this->assertSame($params, $connection->getParameters()->toArray());
+    }
+}

core/vendor/symfony/cache/Tests/Adapter/ProxyAdapterTest.php

@@ -0,0 +1,32 @@
+<?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\Cache\Tests\Adapter;
+
+use Cache\IntegrationTests\CachePoolTest;
+use Symfony\Component\Cache\Adapter\ArrayAdapter;
+use Symfony\Component\Cache\Adapter\ProxyAdapter;
+
+/**
+ * @group time-sensitive
+ */
+class ProxyAdapterTest extends CachePoolTest
+{
+    protected $skippedTests = array(
+        'testDeferredSaveWithoutCommit' => 'Assumes a shared cache which ArrayAdapter is not.',
+        'testSaveWithoutExpire' => 'Assumes a shared cache which ArrayAdapter is not.',
+    );
+
+    public function createCachePool()
+    {
+        return new ProxyAdapter(new ArrayAdapter());
+    }
+}

core/vendor/symfony/cache/Tests/Adapter/RedisAdapterTest.php

@@ -0,0 +1,81 @@
+<?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\Cache\Tests\Adapter;
+
+use Symfony\Component\Cache\Adapter\RedisAdapter;
+
+class RedisAdapterTest extends AbstractRedisAdapterTest
+{
+    public static function setupBeforeClass()
+    {
+        parent::setupBeforeClass();
+        self::$redis = new \Redis();
+        self::$redis->connect('127.0.0.1');
+    }
+
+    public function testCreateConnection()
+    {
+        $redis = RedisAdapter::createConnection('redis://localhost');
+        $this->assertInstanceOf(\Redis::class, $redis);
+        $this->assertTrue($redis->isConnected());
+        $this->assertSame(0, $redis->getDbNum());
+
+        $redis = RedisAdapter::createConnection('redis://localhost/2');
+        $this->assertSame(2, $redis->getDbNum());
+
+        $redis = RedisAdapter::createConnection('redis://localhost', array('timeout' => 3));
+        $this->assertEquals(3, $redis->getTimeout());
+
+        $redis = RedisAdapter::createConnection('redis://localhost?timeout=4');
+        $this->assertEquals(4, $redis->getTimeout());
+
+        $redis = RedisAdapter::createConnection('redis://localhost', array('read_timeout' => 5));
+        $this->assertEquals(5, $redis->getReadTimeout());
+    }
+
+    /**
+     * @dataProvider provideFailedCreateConnection
+     * @expectedException Symfony\Component\Cache\Exception\InvalidArgumentException
+     * @expectedExceptionMessage Redis connection failed
+     */
+    public function testFailedCreateConnection($dsn)
+    {
+        RedisAdapter::createConnection($dsn);
+    }
+
+    public function provideFailedCreateConnection()
+    {
+        return array(
+            array('redis://localhost:1234'),
+            array('redis://foo@localhost'),
+            array('redis://localhost/123'),
+        );
+    }
+
+    /**
+     * @dataProvider provideInvalidCreateConnection
+     * @expectedException Symfony\Component\Cache\Exception\InvalidArgumentException
+     * @expectedExceptionMessage Invalid Redis DSN
+     */
+    public function testInvalidCreateConnection($dsn)
+    {
+        RedisAdapter::createConnection($dsn);
+    }
+
+    public function provideInvalidCreateConnection()
+    {
+        return array(
+            array('foo://localhost'),
+            array('redis://'),
+        );
+    }
+}

core/vendor/symfony/cache/Tests/Adapter/RedisArrayAdapterTest.php

@@ -0,0 +1,24 @@
+<?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\Cache\Tests\Adapter;
+
+class RedisArrayAdapterTest extends AbstractRedisAdapterTest
+{
+    public static function setupBeforeClass()
+    {
+        parent::setupBeforeClass();
+        if (!class_exists('RedisArray')) {
+            self::markTestSkipped('The RedisArray class is required.');
+        }
+        self::$redis = new \RedisArray(array('localhost'), array('lazy_connect' => true));
+    }
+}

core/vendor/symfony/cache/Tests/CacheItemTest.php

@@ -0,0 +1,53 @@
+<?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\Cache\Tests;
+
+use Symfony\Component\Cache\CacheItem;
+
+class CacheItemTest extends \PHPUnit_Framework_TestCase
+{
+    public function testValidKey()
+    {
+        $this->assertNull(CacheItem::validateKey('foo'));
+    }
+
+    /**
+     * @dataProvider provideInvalidKey
+     * @expectedException Symfony\Component\Cache\Exception\InvalidArgumentException
+     * @expectedExceptionMessage Cache key
+     */
+    public function testInvalidKey($key)
+    {
+        CacheItem::validateKey($key);
+    }
+
+    public function provideInvalidKey()
+    {
+        return array(
+            array(''),
+            array('{'),
+            array('}'),
+            array('('),
+            array(')'),
+            array('/'),
+            array('\\'),
+            array('@'),
+            array(':'),
+            array(true),
+            array(null),
+            array(1),
+            array(1.1),
+            array(array()),
+            array(new \Exception('foo')),
+        );
+    }
+}

core/vendor/symfony/cache/Tests/DoctrineProviderTest.php

@@ -0,0 +1,44 @@
+<?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\Cache\Tests;
+
+use Doctrine\Common\Cache\CacheProvider;
+use Symfony\Component\Cache\Adapter\ArrayAdapter;
+use Symfony\Component\Cache\DoctrineProvider;
+
+class DoctrineProviderTest extends \PHPUnit_Framework_TestCase
+{
+    public function testProvider()
+    {
+        $pool = new ArrayAdapter();
+        $cache = new DoctrineProvider($pool);
+
+        $this->assertInstanceOf(CacheProvider::class, $cache);
+
+        $key = '{}()/\@:';
+
+        $this->assertTrue($cache->delete($key));
+        $this->assertFalse($cache->contains($key));
+
+        $this->assertTrue($cache->save($key, 'bar'));
+        $this->assertTrue($cache->contains($key));
+        $this->assertSame('bar', $cache->fetch($key));
+
+        $this->assertTrue($cache->delete($key));
+        $this->assertFalse($cache->fetch($key));
+        $this->assertTrue($cache->save($key, 'bar'));
+
+        $cache->flushAll();
+        $this->assertFalse($cache->fetch($key));
+        $this->assertFalse($cache->contains($key));
+    }
+}

core/vendor/symfony/cache/Tests/Fixtures/ExternalAdapter.php

@@ -0,0 +1,76 @@
+<?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\Cache\Tests\Fixtures;
+
+use Psr\Cache\CacheItemInterface;
+use Psr\Cache\CacheItemPoolInterface;
+use Symfony\Component\Cache\Adapter\ArrayAdapter;
+
+/**
+ * Adapter not implementing the {@see \Symfony\Component\Cache\Adapter\AdapterInterface}.
+ *
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+class ExternalAdapter implements CacheItemPoolInterface
+{
+    private $cache;
+
+    public function __construct()
+    {
+        $this->cache = new ArrayAdapter();
+    }
+
+    public function getItem($key)
+    {
+        return $this->cache->getItem($key);
+    }
+
+    public function getItems(array $keys = array())
+    {
+        return $this->cache->getItems($keys);
+    }
+
+    public function hasItem($key)
+    {
+        return $this->cache->hasItem($key);
+    }
+
+    public function clear()
+    {
+        return $this->cache->clear();
+    }
+
+    public function deleteItem($key)
+    {
+        return $this->cache->deleteItem($key);
+    }
+
+    public function deleteItems(array $keys)
+    {
+        return $this->cache->deleteItems($keys);
+    }
+
+    public function save(CacheItemInterface $item)
+    {
+        return $this->cache->save($item);
+    }
+
+    public function saveDeferred(CacheItemInterface $item)
+    {
+        return $this->cache->saveDeferred($item);
+    }
+
+    public function commit()
+    {
+        return $this->cache->commit();
+    }
+}

core/vendor/symfony/cache/composer.json

@@ -0,0 +1,46 @@
+{
+    "name": "symfony/cache",
+    "type": "library",
+    "description": "Symfony implementation of PSR-6",
+    "keywords": ["caching", "psr6"],
+    "homepage": "https://symfony.com",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Nicolas Grekas",
+            "email": "p@tchwork.com"
+        },
+        {
+            "name": "Symfony Community",
+            "homepage": "https://symfony.com/contributors"
+        }
+    ],
+    "provide": {
+        "psr/cache-implementation": "1.0"
+    },
+    "require": {
+        "php": ">=5.5.9",
+        "psr/cache": "~1.0",
+        "psr/log": "~1.0"
+    },
+    "require-dev": {
+        "cache/integration-tests": "dev-master",
+        "doctrine/cache": "~1.6",
+        "predis/predis": "~1.0"
+    },
+    "suggest": {
+        "symfony/polyfill-apcu": "For using ApcuAdapter on HHVM"
+    },
+    "autoload": {
+        "psr-4": { "Symfony\\Component\\Cache\\": "" },
+        "exclude-from-classmap": [
+            "/Tests/"
+        ]
+    },
+    "minimum-stability": "dev",
+    "extra": {
+        "branch-alias": {
+            "dev-master": "3.1-dev"
+        }
+    }
+}

core/vendor/symfony/cache/phpunit.xml.dist

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.1/phpunit.xsd"
+         backupGlobals="false"
+         colors="true"
+         bootstrap="vendor/autoload.php"
+>
+    <php>
+        <ini name="error_reporting" value="-1" />
+    </php>
+
+    <testsuites>
+        <testsuite name="Symfony Cache Component Test Suite">
+            <directory>./Tests/</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist>
+            <directory>./</directory>
+            <exclude>
+                <directory>./Tests</directory>
+                <directory>./vendor</directory>
+            </exclude>
+        </whitelist>
+    </filter>
+
+    <listeners>
+        <listener class="Symfony\Bridge\PhpUnit\SymfonyTestsListener">
+            <arguments>
+                <array>
+                    <element><string>Cache\IntegrationTests</string></element>
+                    <element><string>Doctrine\Common\Cache</string></element>
+                </array>
+            </arguments>
+        </listener>
+    </listeners>
+</phpunit>