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Config.php
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Config.php
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<?php
// +----------------------------------------------------------------------+
// | PHP Version 5 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2003 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.0 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Author: Bertrand Mansion <bmansion@mamasam.com> |
// +----------------------------------------------------------------------+
//
// $Id$
require_once('PEAR.php');
require_once('Config/Container.php');
$GLOBALS['CONFIG_TYPES'] =
array(
'apache' => array('Config/Container/Apache.php', 'Config_Container_Apache'),
'genericconf' => array('Config/Container/GenericConf.php', 'Config_Container_GenericConf'),
'inifile' => array('Config/Container/IniFile.php', 'Config_Container_IniFile'),
'inicommented' => array('Config/Container/IniCommented.php', 'Config_Container_IniCommented'),
'phparray' => array('Config/Container/PHPArray.php', 'Config_Container_PHPArray'),
'phpconstants' => array('Config/Container/PHPConstants.php', 'Config_Container_PHPConstants'),
'xml' => array('Config/Container/XML.php', 'Config_Container_XML')
);
/**
* Config
*
* This class allows for parsing and editing of configuration datasources.
* Do not use this class only to read datasources because of the overhead
* it creates to keep track of the configuration structure.
*
* @author Bertrand Mansion <bmansion@mamasam.com>
* @package Config
*/
class Config {
/**
* Datasource
* Can be a file url, a dsn, an object...
* @var mixed
*/
var $datasrc;
/**
* Type of datasource for config
* Ex: IniCommented, Apache...
* @var string
*/
var $configType = '';
/**
* Options for parser
* @var string
*/
var $parserOptions = array();
/**
* Container object
* @var object
*/
var $container;
/**
* Constructor
* Creates a root container
*
* @access public
*/
function __construct()
{
$this->container = new Config_Container('section', 'root');
} // end constructor
/**
* Returns true if container is registered
*
* @param string $configType Type of config
* @access public
* @return bool
*/
function isConfigTypeRegistered($configType)
{
return isset($GLOBALS['CONFIG_TYPES'][strtolower($configType)]);
} // end func isConfigTypeRegistered
/**
* Register a new container
*
* @param string $configType Type of config
* @param array|false $configInfo Array of format:
* array('path/to/Name.php',
* 'Config_Container_Class_Name').
*
* If left false, defaults to:
* array('Config/Container/$configType.php',
* 'Config_Container_$configType')
* @access public
* @static
* @author Greg Beaver <cellog@users.sourceforge.net>
* @return true|PEAR_Error true on success
*/
function registerConfigType($configType, $configInfo = false)
{
if (Config::isConfigTypeRegistered($configType)) {
$info = $GLOBALS['CONFIG_TYPES'][strtolower($configType)];
if ($info[0] == $configInfo[0] &&
$info[1] == $configInfo[1]) {
return true;
} else {
return PEAR::raiseError("Config::registerConfigType registration of existing $configType failed.", null, PEAR_ERROR_RETURN);
}
}
if (!is_array($configInfo)) {
// make the normal assumption, that this is a standard config container added in at runtime
$configInfo = array('Config/Container/' . $configType . '.php',
'Config_Container_'. $configType);
}
$file_exists = @include_once($configInfo[0]);
if ($file_exists) {
if (!class_exists($configInfo[1])) {
return PEAR::raiseError("Config::registerConfigType class '$configInfo[1]' not found in $configInfo[0]", null, PEAR_ERROR_RETURN);
}
} else {
return PEAR::raiseError("Config::registerConfigType file $configInfo[0] not found", null, PEAR_ERROR_RETURN);
}
$GLOBALS['CONFIG_TYPES'][strtolower($configType)] = $configInfo;
return true;
} // end func registerConfigType
/**
* Returns the root container for this config object
*
* @access public
* @return object reference to config's root container object
*/
function &getRoot()
{
return $this->container;
} // end func getRoot
/**
* Sets the content of the root Config_container object.
*
* This method will replace the current child of the root
* Config_Container object by the given object.
*
* @param object $rootContainer container to be used as the first child to root
* @access public
* @return mixed true on success or PEAR_Error
*/
function setRoot(&$rootContainer)
{
if (is_object($rootContainer) && strtolower(get_class($rootContainer)) === 'config_container') {
if ($rootContainer->getName() === 'root' && $rootContainer->getType() === 'section') {
$this->container =& $rootContainer;
} else {
$this->container = new Config_Container('section', 'root');
$this->container->addItem($rootContainer);
}
return true;
} else {
return PEAR::raiseError("Config::setRoot only accepts object of Config_Container type.", null, PEAR_ERROR_RETURN);
}
} // end func setRoot
/**
* Parses the datasource contents
*
* This method will parse the datasource given and fill the root
* Config_Container object with other Config_Container objects.
*
* @param mixed $datasrc Datasource to parse
* @param string $configType Type of configuration
* @param array $options Options for the parser
* @access public
* @return mixed PEAR_Error on error or Config_Container object
*/
function &parseConfig($datasrc, $configType, $options = array())
{
$configType = strtolower($configType);
if (!$this->isConfigTypeRegistered($configType)) {
return PEAR::raiseError("Configuration type '$configType' is not registered in Config::parseConfig.", null, PEAR_ERROR_RETURN);
}
$includeFile = $GLOBALS['CONFIG_TYPES'][$configType][0];
$className = $GLOBALS['CONFIG_TYPES'][$configType][1];
include_once($includeFile);
$parser = new $className($options);
$error = $parser->parseDatasrc($datasrc, $this);
if ($error !== true) {
return $error;
}
$this->parserOptions = $parser->options;
$this->datasrc = $datasrc;
$this->configType = $configType;
return $this->container;
} // end func &parseConfig
/**
* Writes the container contents to the datasource.
*
* @param mixed $datasrc Datasource to write to
* @param string $configType Type of configuration
* @param array $options Options for config container
* @access public
* @return mixed PEAR_Error on error or true if ok
*/
function writeConfig($datasrc = null, $configType = null, $options = array())
{
if (empty($datasrc)) {
$datasrc = $this->datasrc;
}
if (empty($configType)) {
$configType = $this->configType;
}
if (empty($options)) {
$options = $this->parserOptions;
}
return $this->container->writeDatasrc($datasrc, $configType, $options);
} // end func writeConfig
} // end class Config