318 Zeilen
9,4 KiB
PHP
318 Zeilen
9,4 KiB
PHP
<?php
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/**
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* This file is part of MySQLDumper released under the GNU/GPL 2 license
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* http://www.mysqldumper.net
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*
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* @package MySQLDumper
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* @subpackage Configuration
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* @version SVN: $Rev$
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* @author $Author$
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*/
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/**
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* Configuration class implemented as singleton
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*
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* Handles getting and setting of configuration variables
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*
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* @package MySQLDumper
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* @subpackage Configuration
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*/
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class Msd_Configuration
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{
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/**
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* Instance
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*
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* @var Msd_Configuration
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*/
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private static $_instance = NULL;
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/**
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* Configuration params
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*
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* @var StdClass
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*/
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private $_data = null;
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/**
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* Session to old values
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*
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* @var Zend_Session_Namespace
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*/
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private $_session = null;
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/**
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* Constructor
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*
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* @param string $configName The name of the configuration file to load.
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* If not set we will load the config from
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* session if present.
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* @param bool $forceLoading Force loading of configuration from file
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*/
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private function __construct($configName = '', $forceLoading = false)
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{
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$this->_session = new Zend_Session_Namespace('MySQLDumper');
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if ($forceLoading === false && isset($this->_session->dynamic->configFile)) {
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$this->loadConfigFromSession();
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return;
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}
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$this->_data = new stdClass;
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if ($configName == '') {
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$configName = 'defaultConfig';
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}
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$this->_data->dynamic = Msd_ConfigurationPhpValues::getDynamicValues();
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$this->_data->paths = $this->_loadUserDirectories();
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$this->loadConfiguration($configName);
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$this->set('dynamic.configFile', $configName);
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$defaultDb = $this->get('config.dbuser.defaultDb');
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if ($defaultDb != '') {
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$this->set('dynamic.dbActual', $defaultDb);
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}
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$this->saveConfigToSession();
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}
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/**
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* No cloning for singleton
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*
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* @return void
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*/
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public function __clone()
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{
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throw new Msd_Exception('Cloning is not allowed');
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}
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/**
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* Returns the configuration instance
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*
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* @param string $configName The name of the configuration file to load.
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* If not set we will load the config from
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* session if present.
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* @param boolean $forceLoading If set the config will be read from file.
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*
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* @return Msd_Configuration
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*/
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public static function getInstance($configName = '', $forceLoading = false)
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{
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if (null == self::$_instance) {
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self::$_instance = new self($configName, $forceLoading);
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}
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if ($forceLoading) {
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self::$_instance->loadConfiguration($configName, true);
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}
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return self::$_instance;
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}
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/**
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* Set a key to a val
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*
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* @param string $configPath Must begin with "config", "dynamic" or "paths"
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* @param string $val The value to set
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*
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* @return Msd_Configuration
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*/
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public function set($configPath, $val)
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{
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$args = explode('.', $configPath);
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if (!in_array($args[0], array('config', 'paths', 'dynamic'))) {
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$msg = 'Trying to set config value with illegal key. First key '
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. 'must be "config", "paths" or "dynamic"';
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throw new Msd_Exception($msg);
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}
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switch (count($args)) {
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case 2:
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list($type, $var) = $args;
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$this->_data->$type->$var = $val;
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break;
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case 3:
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list($type, $section, $var) = $args;
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$this->_data->$type->$section->$var = $val;
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break;
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default:
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$backTrace = debug_backtrace(false);
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throw new Msd_Exception(
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'Path couldn\'t be set!' . PHP_EOL . $configPath .
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' invoked from ' . $backTrace[0]['file'] . '[' .
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$backTrace[0]['line'] . ']',
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E_USER_NOTICE
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);
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}
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return $this;
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}
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/**
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* Get a config parameter
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*
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* If first part isn't config, paths or dynamic, we assume config is meant.
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*
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* @param string $key Path to get
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*
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* @return string|array
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*/
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public function get($key)
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{
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$params = explode('.', $key);
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if (!in_array($params[0], array('config', 'paths', 'dynamic'))) {
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$msg = 'Trying to get config value with illegal key. First key '
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. 'must be "config", "paths" or "dynamic"';
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throw new Msd_Exception($msg);
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}
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$values = $this->_data->$params[0];
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if (!is_array($values)) {
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$values = $this->_data->$params[0]->toArray();
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}
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if (sizeof($params) == 1) {
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return $values;
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}
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unset($params[0]);
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foreach ($params as $index) {
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if (isset($values[$index])) {
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$values = $values[$index];
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} else {
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$values = null;
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break;
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}
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}
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return $values;
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}
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/**
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* Save configurations to file
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*
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* @param string $fileName Name of configuration without extension .ini
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* @param array $configArray Data to save as array
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*
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* @return void
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*/
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public function save($fileName = null, $configArray = null)
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{
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if ($fileName === null) {
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$fileName = $this->get('dynamic.configFile');
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}
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$fileName .= '.ini';
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// save branch config and skip groups "dynamic" and "paths"
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if ($configArray !== null) {
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$configData = new Zend_Config($configArray, true);
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} else {
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$configData = $this->_data->config;
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}
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$configWriter = new Zend_Config_Writer_Ini(
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array(
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'filename' => $this->get('paths.config') . DS . $fileName,
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'config' => $configData,
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)
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);
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$configWriter->write();
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$this->_data->config = $configData;
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$this->set('dynamic.configFile', basename($fileName, '.ini'));
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$this->saveConfigToSession();
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}
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/**
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* Save config to session
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*
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* @return void
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*/
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public function saveConfigToSession()
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{
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$this->_session->unsetAll();
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$this->_session->config = $this->_data->config;
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$this->_session->dynamic = $this->_data->dynamic;
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$this->_session->paths = $this->_data->paths;
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}
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/**
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* Get config from session
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*
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* @return object
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*/
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public function loadConfigFromSession()
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{
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if (isset($this->_session->config)) {
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$this->_data->config = $this->_session->config;
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}
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if (isset($this->_session->dynamic)) {
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$this->_data->dynamic = $this->_session->dynamic;
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}
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if (isset($this->_session->paths)) {
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$this->_data->paths = $this->_session->paths;
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}
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}
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/**
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* Load configuration file
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*
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* @param string $configName The configuration file to load
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* @param boolean $applyValues Whether to apply loaded values to config
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*
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* @return Zend_Config_ini Loaded configuration as Zend_Config_Ini
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*/
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public function loadConfiguration($configName, $applyValues = true)
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{
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$this->_loadUserDirectories();
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if ($configName != 'defaultConfig') {
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$configName .= '.ini';
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$configPath = $this->get('paths.config');
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$configFile = $configPath . DS . $configName;
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} else {
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// special case - defaultConfig.ini is in application/configs
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$configFile = realpath(APPLICATION_PATH . DS . 'configs')
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. DS . 'defaultConfig.ini';
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}
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if (!is_readable($configFile)) {
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throw new Msd_Exception(
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'Couldn\'t read configuration file ' . $configFile
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);
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}
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$options = array('allowModifications' => true);
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$config = new Zend_Config_Ini($configFile, null, $options);
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if (!$applyValues) {
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return $config;
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}
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$this->_data->config = null;
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$this->_data->config = $config;
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$this->set('dynamic.configFile', basename($configFile, '.ini'));
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$iconPath = 'css/' . $this->get('config.interface.theme') . '/icons';
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$this->set('paths.iconpath', $iconPath);
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$this->saveConfigToSession();
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return $config;
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}
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/**
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* Get user directories and save them to config
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*
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* @return Zend_Config Directories as object
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*/
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private function _loadUserDirectories()
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{
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// set paths
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$workRoot = realpath(APPLICATION_PATH . DS . '..') . DS . 'work' . DS;
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$directories = array(
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'work' => $workRoot,
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'log' => $workRoot . 'log',
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'backup' => $workRoot . 'backup',
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'config' => $workRoot . 'config'
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);
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return new Zend_Config($directories, true);
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}
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/**
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* Return name of configuration
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*
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* @return string
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*/
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public function getTitle()
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{
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return $this->get('config.general.title');
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}
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/**
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* Reloads the configuration from the current ini file.
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*
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* @return void
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*/
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public function reloadConfig()
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{
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$this->loadConfiguration($this->get('dynamic.configFile'));
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}
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}
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