/usr/share/php/kohana3.1/system/classes/kohana/config.php is in libkohana3.1-core-php 3.1.4-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* Wrapper for configuration arrays. Multiple configuration readers can be
* attached to allow loading configuration from files, database, etc.
*
* @package Kohana
* @category Configuration
* @author Kohana Team
* @copyright (c) 2009-2011 Kohana Team
* @license http://kohanaframework.org/license
*/
class Kohana_Config {
/**
* @var Kohana_Config Singleton static instance
*/
protected static $_instance;
/**
* Get the singleton instance of Config.
*
* $config = Config::instance();
*
* @return Config
*/
public static function instance()
{
if (Config::$_instance === NULL)
{
// Create a new instance
Config::$_instance = new Config;
}
return Config::$_instance;
}
/**
* @var array Configuration readers
*/
protected $_readers = array();
/**
* Attach a configuration reader. By default, the reader will be added as
* the first used reader. However, if the reader should be used only when
* all other readers fail, use `FALSE` for the second parameter.
*
* $config->attach($reader); // Try first
* $config->attach($reader, FALSE); // Try last
*
* @param object Config_Reader instance
* @param boolean add the reader as the first used object
* @return $this
*/
public function attach(Config_Reader $reader, $first = TRUE)
{
if ($first === TRUE)
{
// Place the log reader at the top of the stack
array_unshift($this->_readers, $reader);
}
else
{
// Place the reader at the bottom of the stack
$this->_readers[] = $reader;
}
return $this;
}
/**
* Detach a configuration reader.
*
* $config->detach($reader);
*
* @param object Config_Reader instance
* @return $this
*/
public function detach(Config_Reader $reader)
{
if (($key = array_search($reader, $this->_readers)) !== FALSE)
{
// Remove the writer
unset($this->_readers[$key]);
}
return $this;
}
/**
* Load a configuration group. Searches the readers in order until the
* group is found. If the group does not exist, an empty configuration
* array will be loaded using the first reader.
*
* $array = $config->load($name);
*
* @param string configuration group name
* @return Config_Reader
* @throws Kohana_Exception
*/
public function load($group)
{
foreach ($this->_readers as $reader)
{
if ($config = $reader->load($group))
{
// Found a reader for this configuration group
return $config;
}
}
// Reset the iterator
reset($this->_readers);
if ( ! is_object($config = current($this->_readers)))
{
throw new Kohana_Exception('No configuration readers attached');
}
// Load the reader as an empty array
return $config->load($group, array());
}
/**
* Copy one configuration group to all of the other readers.
*
* $config->copy($name);
*
* @param string configuration group name
* @return $this
*/
public function copy($group)
{
// Load the configuration group
$config = $this->load($group);
foreach ($this->_readers as $reader)
{
if ($config instanceof $reader)
{
// Do not copy the config to the same group
continue;
}
// Load the configuration object
$object = $reader->load($group, array());
foreach ($config as $key => $value)
{
// Copy each value in the config
$object->offsetSet($key, $value);
}
}
return $this;
}
} // End Kohana_Config
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