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100 lines
2.7 KiB
PHP
100 lines
2.7 KiB
PHP
<?php
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/**
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* This file contains classes implementing configuration feature.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @link http://www.yiiframework.com/
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* @copyright 2008-2013 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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/**
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* CConfiguration represents an array-based configuration.
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*
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* It can be used to initialize an object's properties.
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*
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* The configuration data may be obtained from a PHP script. For example,
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* <pre>
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* return array(
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* 'name'=>'My Application',
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* 'defaultController'=>'index',
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* );
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* </pre>
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* Use the following code to load the above configuration data:
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* <pre>
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* $config=new CConfiguration('path/to/config.php');
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* </pre>
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*
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* To apply the configuration to an object, call {@link applyTo()}.
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* Each (key,value) pair in the configuration data is applied
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* to the object like: $object->$key=$value.
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*
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* Since CConfiguration extends from {@link CMap}, it can be
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* used like an associative array. See {@link CMap} for more details.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @package system.collections
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* @since 1.0
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*/
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class CConfiguration extends CMap
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{
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/**
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* Constructor.
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* @param mixed $data if string, it represents a config file (a PHP script returning the configuration as an array);
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* If array, it is config data.
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*/
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public function __construct($data=null)
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{
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if(is_string($data))
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parent::__construct(require($data));
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else
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parent::__construct($data);
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}
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/**
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* Loads configuration data from a file and merges it with the existing configuration.
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*
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* A config file must be a PHP script returning a configuration array (like the following)
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* <pre>
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* return array
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* (
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* 'name'=>'My Application',
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* 'defaultController'=>'index',
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* );
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* </pre>
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*
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* @param string $configFile configuration file path (if using relative path, be aware of what is the current path)
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* @see mergeWith
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*/
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public function loadFromFile($configFile)
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{
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$data=require($configFile);
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if($this->getCount()>0)
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$this->mergeWith($data);
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else
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$this->copyFrom($data);
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}
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/**
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* Saves the configuration into a string.
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* The string is a valid PHP expression representing the configuration data as an array.
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* @return string the string representation of the configuration
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*/
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public function saveAsString()
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{
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return str_replace("\r",'',var_export($this->toArray(),true));
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}
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/**
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* Applies the configuration to an object.
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* Each (key,value) pair in the configuration data is applied
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* to the object like: $object->$key=$value.
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* @param object $object object to be applied with this configuration
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*/
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public function applyTo($object)
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{
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foreach($this->toArray() as $key=>$value)
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$object->$key=$value;
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}
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}
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