Refresh kohana from upstream svn trunk r3771.

During this process, remove a considerable number of files from kohana
that we will not be needing in Gallery3, including the following files
and directories:
    kohana/application
    kohana/example.htaccess
    kohana/index.php
    kohana/install.php
    kohana/kohana.png
    kohana/modules/archive
    kohana/modules/auth
    kohana/modules/flot
    kohana/modules/gmaps
    kohana/modules/kodoc
    kohana/modules/payment
    kohana/modules/smarty
    kohana/modules/unit_test/i18n
    kohana/modules/unit_test/tests/Example_Test.php
    kohana/modules/unit_test/tests/Valid_Test.php
    kohana/system/config/captcha.php
    kohana/system/controllers/captcha.php
    kohana/system/fonts
    kohana/system/i18n
    kohana/system/libraries/Calendar.php
    kohana/system/libraries/Calendar_Event.php
    kohana/system/libraries/Captcha.php
    kohana/system/libraries/Tagcloud.php
    kohana/system/vendor
    kohana/system/views/pagination
    kohana/system/views/kohana_calendar.php

1 files changed, 116 insertions, 0 deletions

diff --git a/kohana/libraries/drivers/Cache/Xcache.php b/kohana/libraries/drivers/Cache/Xcache.php
new file mode 100644
index 00000000..5d027eec
--- /dev/null
+++ b/kohana/libraries/drivers/Cache/Xcache.php
@@ -0,0 +1,116 @@
+<?php defined('SYSPATH') OR die('No direct access allowed.');
+/**
+ * Xcache Cache driver.
+ *
+ * $Id$
+ *
+ * @package    Cache
+ * @author     Kohana Team
+ * @copyright  (c) 2007-2008 Kohana Team
+ * @license    http://kohanaphp.com/license.html
+ */
+class Cache_Xcache_Driver implements Cache_Driver {
+
+	public function __construct()
+	{
+		if ( ! extension_loaded('xcache'))
+			throw new Kohana_Exception('cache.extension_not_loaded', 'xcache');
+	}
+
+	public function get($id)
+	{
+		if (xcache_isset($id))
+			return xcache_get($id);
+
+		return NULL;
+	}
+
+	public function set($id, $data, $tags, $lifetime)
+	{
+		count($tags) and Kohana::log('error', 'Cache: tags are unsupported by the Xcache driver');
+
+		return xcache_set($id, $data, $lifetime);
+	}
+
+	public function find($tag)
+	{
+		Kohana::log('error', 'Cache: tags are unsupported by the Xcache driver');
+		return FALSE;
+	}
+
+	public function delete($id, $tag = FALSE)
+	{
+		if ($tag !== FALSE)
+		{
+			Kohana::log('error', 'Cache: tags are unsupported by the Xcache driver');
+			return TRUE;
+		}
+		elseif ($id !== TRUE)
+		{
+			if (xcache_isset($id))
+				return xcache_unset($id);
+
+			return FALSE;
+		}
+		else
+		{
+			// Do the login
+			$this->auth();
+			$result = TRUE;
+			for ($i = 0, $max = xcache_count(XC_TYPE_VAR); $i < $max; $i++)
+			{
+				if (xcache_clear_cache(XC_TYPE_VAR, $i) !== NULL)
+				{
+					$result = FALSE;
+					break;
+				}
+			}
+
+			// Undo the login
+			$this->auth(TRUE);
+			return $result;
+		}
+
+		return TRUE;
+	}
+
+	public function delete_expired()
+	{
+		return TRUE;
+	}
+
+	private function auth($reverse = FALSE)
+	{
+		static $backup = array();
+
+		$keys = array('PHP_AUTH_USER', 'PHP_AUTH_PW');
+
+		foreach ($keys as $key)
+		{
+			if ($reverse)
+			{
+				if (isset($backup[$key]))
+				{
+					$_SERVER[$key] = $backup[$key];
+					unset($backup[$key]);
+				}
+				else
+				{
+					unset($_SERVER[$key]);
+				}
+			}
+			else
+			{
+				$value = getenv($key);
+
+				if ( ! empty($value))
+				{
+					$backup[$key] = $value;
+				}
+
+				$_SERVER[$key] = Kohana::config('cache_xcache.'.$key);
+			}
+		}
+	}
+
+} // End Cache Xcache Driver