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diff --git a/vendor/swiftmailer/swiftmailer/lib/classes/Swift/KeyCache/DiskKeyCache.php b/vendor/swiftmailer/swiftmailer/lib/classes/Swift/KeyCache/DiskKeyCache.php
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+++ b/vendor/swiftmailer/swiftmailer/lib/classes/Swift/KeyCache/DiskKeyCache.php
@@ -0,0 +1,321 @@
+<?php
+
+/*
+ * This file is part of SwiftMailer.
+ * (c) 2004-2009 Chris Corbyn
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * A KeyCache which streams to and from disk.
+ *
+ * @author Chris Corbyn
+ */
+class Swift_KeyCache_DiskKeyCache implements Swift_KeyCache
+{
+ /** Signal to place pointer at start of file */
+ const POSITION_START = 0;
+
+ /** Signal to place pointer at end of file */
+ const POSITION_END = 1;
+
+ /** Signal to leave pointer in whatever position it currently is */
+ const POSITION_CURRENT = 2;
+
+ /**
+ * An InputStream for cloning.
+ *
+ * @var Swift_KeyCache_KeyCacheInputStream
+ */
+ private $_stream;
+
+ /**
+ * A path to write to.
+ *
+ * @var string
+ */
+ private $_path;
+
+ /**
+ * Stored keys.
+ *
+ * @var array
+ */
+ private $_keys = array();
+
+ /**
+ * Will be true if magic_quotes_runtime is turned on.
+ *
+ * @var bool
+ */
+ private $_quotes = false;
+
+ /**
+ * Create a new DiskKeyCache with the given $stream for cloning to make
+ * InputByteStreams, and the given $path to save to.
+ *
+ * @param Swift_KeyCache_KeyCacheInputStream $stream
+ * @param string $path to save to
+ */
+ public function __construct(Swift_KeyCache_KeyCacheInputStream $stream, $path)
+ {
+ $this->_stream = $stream;
+ $this->_path = $path;
+
+ if (function_exists('get_magic_quotes_runtime') && @get_magic_quotes_runtime() == 1) {
+ $this->_quotes = true;
+ }
+ }
+
+ /**
+ * Set a string into the cache under $itemKey for the namespace $nsKey.
+ *
+ * @see MODE_WRITE, MODE_APPEND
+ *
+ * @param string $nsKey
+ * @param string $itemKey
+ * @param string $string
+ * @param int $mode
+ *
+ * @throws Swift_IoException
+ */
+ public function setString($nsKey, $itemKey, $string, $mode)
+ {
+ $this->_prepareCache($nsKey);
+ switch ($mode) {
+ case self::MODE_WRITE:
+ $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
+ break;
+ case self::MODE_APPEND:
+ $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_END);
+ break;
+ default:
+ throw new Swift_SwiftException(
+ 'Invalid mode ['.$mode.'] used to set nsKey='.
+ $nsKey.', itemKey='.$itemKey
+ );
+ break;
+ }
+ fwrite($fp, $string);
+ $this->_freeHandle($nsKey, $itemKey);
+ }
+
+ /**
+ * Set a ByteStream into the cache under $itemKey for the namespace $nsKey.
+ *
+ * @see MODE_WRITE, MODE_APPEND
+ *
+ * @param string $nsKey
+ * @param string $itemKey
+ * @param Swift_OutputByteStream $os
+ * @param int $mode
+ *
+ * @throws Swift_IoException
+ */
+ public function importFromByteStream($nsKey, $itemKey, Swift_OutputByteStream $os, $mode)
+ {
+ $this->_prepareCache($nsKey);
+ switch ($mode) {
+ case self::MODE_WRITE:
+ $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
+ break;
+ case self::MODE_APPEND:
+ $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_END);
+ break;
+ default:
+ throw new Swift_SwiftException(
+ 'Invalid mode ['.$mode.'] used to set nsKey='.
+ $nsKey.', itemKey='.$itemKey
+ );
+ break;
+ }
+ while (false !== $bytes = $os->read(8192)) {
+ fwrite($fp, $bytes);
+ }
+ $this->_freeHandle($nsKey, $itemKey);
+ }
+
+ /**
+ * Provides a ByteStream which when written to, writes data to $itemKey.
+ *
+ * NOTE: The stream will always write in append mode.
+ *
+ * @param string $nsKey
+ * @param string $itemKey
+ * @param Swift_InputByteStream $writeThrough
+ *
+ * @return Swift_InputByteStream
+ */
+ public function getInputByteStream($nsKey, $itemKey, Swift_InputByteStream $writeThrough = null)
+ {
+ $is = clone $this->_stream;
+ $is->setKeyCache($this);
+ $is->setNsKey($nsKey);
+ $is->setItemKey($itemKey);
+ if (isset($writeThrough)) {
+ $is->setWriteThroughStream($writeThrough);
+ }
+
+ return $is;
+ }
+
+ /**
+ * Get data back out of the cache as a string.
+ *
+ * @param string $nsKey
+ * @param string $itemKey
+ *
+ * @throws Swift_IoException
+ *
+ * @return string
+ */
+ public function getString($nsKey, $itemKey)
+ {
+ $this->_prepareCache($nsKey);
+ if ($this->hasKey($nsKey, $itemKey)) {
+ $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
+ if ($this->_quotes) {
+ ini_set('magic_quotes_runtime', 0);
+ }
+ $str = '';
+ while (!feof($fp) && false !== $bytes = fread($fp, 8192)) {
+ $str .= $bytes;
+ }
+ if ($this->_quotes) {
+ ini_set('magic_quotes_runtime', 1);
+ }
+ $this->_freeHandle($nsKey, $itemKey);
+
+ return $str;
+ }
+ }
+
+ /**
+ * Get data back out of the cache as a ByteStream.
+ *
+ * @param string $nsKey
+ * @param string $itemKey
+ * @param Swift_InputByteStream $is to write the data to
+ */
+ public function exportToByteStream($nsKey, $itemKey, Swift_InputByteStream $is)
+ {
+ if ($this->hasKey($nsKey, $itemKey)) {
+ $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
+ if ($this->_quotes) {
+ ini_set('magic_quotes_runtime', 0);
+ }
+ while (!feof($fp) && false !== $bytes = fread($fp, 8192)) {
+ $is->write($bytes);
+ }
+ if ($this->_quotes) {
+ ini_set('magic_quotes_runtime', 1);
+ }
+ $this->_freeHandle($nsKey, $itemKey);
+ }
+ }
+
+ /**
+ * Check if the given $itemKey exists in the namespace $nsKey.
+ *
+ * @param string $nsKey
+ * @param string $itemKey
+ *
+ * @return bool
+ */
+ public function hasKey($nsKey, $itemKey)
+ {
+ return is_file($this->_path.'/'.$nsKey.'/'.$itemKey);
+ }
+
+ /**
+ * Clear data for $itemKey in the namespace $nsKey if it exists.
+ *
+ * @param string $nsKey
+ * @param string $itemKey
+ */
+ public function clearKey($nsKey, $itemKey)
+ {
+ if ($this->hasKey($nsKey, $itemKey)) {
+ $this->_freeHandle($nsKey, $itemKey);
+ unlink($this->_path.'/'.$nsKey.'/'.$itemKey);
+ }
+ }
+
+ /**
+ * Clear all data in the namespace $nsKey if it exists.
+ *
+ * @param string $nsKey
+ */
+ public function clearAll($nsKey)
+ {
+ if (array_key_exists($nsKey, $this->_keys)) {
+ foreach ($this->_keys[$nsKey] as $itemKey => $null) {
+ $this->clearKey($nsKey, $itemKey);
+ }
+ if (is_dir($this->_path.'/'.$nsKey)) {
+ rmdir($this->_path.'/'.$nsKey);
+ }
+ unset($this->_keys[$nsKey]);
+ }
+ }
+
+ /**
+ * Initialize the namespace of $nsKey if needed.
+ *
+ * @param string $nsKey
+ */
+ private function _prepareCache($nsKey)
+ {
+ $cacheDir = $this->_path.'/'.$nsKey;
+ if (!is_dir($cacheDir)) {
+ if (!mkdir($cacheDir)) {
+ throw new Swift_IoException('Failed to create cache directory '.$cacheDir);
+ }
+ $this->_keys[$nsKey] = array();
+ }
+ }
+
+ /**
+ * Get a file handle on the cache item.
+ *
+ * @param string $nsKey
+ * @param string $itemKey
+ * @param int $position
+ *
+ * @return resource
+ */
+ private function _getHandle($nsKey, $itemKey, $position)
+ {
+ if (!isset($this->_keys[$nsKey][$itemKey])) {
+ $openMode = $this->hasKey($nsKey, $itemKey) ? 'r+b' : 'w+b';
+ $fp = fopen($this->_path.'/'.$nsKey.'/'.$itemKey, $openMode);
+ $this->_keys[$nsKey][$itemKey] = $fp;
+ }
+ if (self::POSITION_START == $position) {
+ fseek($this->_keys[$nsKey][$itemKey], 0, SEEK_SET);
+ } elseif (self::POSITION_END == $position) {
+ fseek($this->_keys[$nsKey][$itemKey], 0, SEEK_END);
+ }
+
+ return $this->_keys[$nsKey][$itemKey];
+ }
+
+ private function _freeHandle($nsKey, $itemKey)
+ {
+ $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_CURRENT);
+ fclose($fp);
+ $this->_keys[$nsKey][$itemKey] = null;
+ }
+
+ /**
+ * Destructor.
+ */
+ public function __destruct()
+ {
+ foreach ($this->_keys as $nsKey => $null) {
+ $this->clearAll($nsKey);
+ }
+ }
+}
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