1 files changed, 160 insertions, 0 deletions
diff --git a/phpBB/phpbb/db/migration/tool/config.php b/phpBB/phpbb/db/migration/tool/config.php
new file mode 100644
index 0000000000..f93e7118c4
--- /dev/null
+++ b/phpBB/phpbb/db/migration/tool/config.php
@@ -0,0 +1,160 @@
+<?php
+/**
+*
+* This file is part of the phpBB Forum Software package.
+*
+* @copyright (c) phpBB Limited <https://www.phpbb.com>
+* @license GNU General Public License, version 2 (GPL-2.0)
+*
+* For full copyright and license information, please see
+* the docs/CREDITS.txt file.
+*
+*/
+
+namespace phpbb\db\migration\tool;
+
+/**
+* Migration config tool
+*/
+class config implements \phpbb\db\migration\tool\tool_interface
+{
+	/** @var \phpbb\config\config */
+	protected $config;
+
+	/**
+	* Constructor
+	*
+	* @param \phpbb\config\config $config
+	*/
+	public function __construct(\phpbb\config\config $config)
+	{
+		$this->config = $config;
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function get_name()
+	{
+		return 'config';
+	}
+
+	/**
+	* Add a config setting.
+	*
+	* @param string $config_name The name of the config setting
+	* 	you would like to add
+	* @param mixed $config_value The value of the config setting
+	* @param bool $is_dynamic True if it is dynamic (changes very often)
+	* 	and should not be stored in the cache, false if not.
+	* @return null
+	*/
+	public function add($config_name, $config_value, $is_dynamic = false)
+	{
+		if (isset($this->config[$config_name]))
+		{
+			return;
+		}
+
+		$this->config->set($config_name, $config_value, !$is_dynamic);
+	}
+
+	/**
+	* Update an existing config setting.
+	*
+	* @param string $config_name The name of the config setting you would
+	* 	like to update
+	* @param mixed $config_value The value of the config setting
+	* @return null
+	* @throws \phpbb\db\migration\exception
+	*/
+	public function update($config_name, $config_value)
+	{
+		if (!isset($this->config[$config_name]))
+		{
+			throw new \phpbb\db\migration\exception('CONFIG_NOT_EXIST', $config_name);
+		}
+
+		$this->config->set($config_name, $config_value);
+	}
+
+	/**
+	* Update a config setting if the first argument equal to the
+	* current config value
+	*
+	* @param string $compare If equal to the current config value, will be
+	* 	updated to the new config value, otherwise not
+	* @param string $config_name The name of the config setting you would
+	* 	like to update
+	* @param mixed $config_value The value of the config setting
+	* @return null
+	* @throws \phpbb\db\migration\exception
+	*/
+	public function update_if_equals($compare, $config_name, $config_value)
+	{
+		if (!isset($this->config[$config_name]))
+		{
+			throw new \phpbb\db\migration\exception('CONFIG_NOT_EXIST', $config_name);
+		}
+
+		$this->config->set_atomic($config_name, $compare, $config_value);
+	}
+
+	/**
+	* Remove an existing config setting.
+	*
+	* @param string $config_name The name of the config setting you would
+	* 	like to remove
+	* @return null
+	*/
+	public function remove($config_name)
+	{
+		if (!isset($this->config[$config_name]))
+		{
+			return;
+		}
+
+		$this->config->delete($config_name);
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function reverse()
+	{
+		$arguments = func_get_args();
+		$original_call = array_shift($arguments);
+
+		$call = false;
+		switch ($original_call)
+		{
+			case 'add':
+				$call = 'remove';
+			break;
+
+			case 'remove':
+				$call = 'add';
+				if (sizeof($arguments) == 1)
+				{
+					$arguments[] = '';
+				}
+			break;
+
+			case 'update_if_equals':
+				$call = 'update_if_equals';
+
+				// Set to the original value if the current value is what we compared to originally
+				$arguments = array(
+					$arguments[2],
+					$arguments[1],
+					$arguments[0],
+				);
+			break;
+		}
+
+		if ($call)
+		{
+			return call_user_func_array(array(&$this, $call), $arguments);
+		}
+	}
+}