137 lines
4.4 KiB
PHP
137 lines
4.4 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.phpdoctrine.com>.
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*/
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/**
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* Sensei
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*
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* @package Sensei
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* @category Core
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* @license http://www.gnu.org/licenses/lgpl.txt LGPL
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* @link http://sourceforge.net/projects/sensei
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* @author Janne Vanhala <jpvanhal@cc.hut.fi>
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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* @version $Revision$
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* @since 1.0
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*/
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final class Sensei {
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/**
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* @var string $path doctrine root directory
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*/
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private static $path;
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/**
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* getPath
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* returns the doctrine root
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*
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* @return string
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*/
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public static function getPath()
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{
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if (! self::$path) {
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self::$path = dirname(__FILE__);
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}
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return self::$path;
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}
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/**
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* simple autoload function
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* returns true if the class was loaded, otherwise false
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*
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* @param string $classname
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* @return boolean
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*/
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public static function autoload($classname)
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{
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if (class_exists($classname, false)) {
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return false;
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}
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if ( ! self::$path) {
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self::$path = dirname(__FILE__);
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}
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$class = self::$path . DIRECTORY_SEPARATOR . str_replace('_', DIRECTORY_SEPARATOR, $classname) . '.php';
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if ( ! file_exists($class)) {
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return false;
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}
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require_once($class);
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return true;
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}
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/**
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* Load a given class: a file name is acquired by naively transforming
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* underscores into directory separators and appending the .php suffix.
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*
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* The file is searched for in every directory in the include path.
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*
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* @param string class name
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* @param boolean allow class to be autoloaded before attempt
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* @return true
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* @throws Xi_Exception if the class could not be loaded
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*/
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public static function loadClass($className)
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{
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if (class_exists($className, false)) {
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return false;
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}
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if (! self::$path) {
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self::$path = dirname(__FILE__);
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}
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$class = self::$path . DIRECTORY_SEPARATOR . str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php';
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if ( ! file_exists($class)) {
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return false;
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}
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require_once($class);
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throw new Sensei_Exception('Class ' . $className . ' does not exist and could not '
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. 'be loaded.');
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}
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/**
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* Create a new instance of a class.
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*
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* @param string class name
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* @param array constructor arguments, optional
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* @return object
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*/
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public static function create($class, array $args = array())
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{
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/**
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* An arbitrary amount of constructor arguments can be achieved using
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* reflection, but it's slower by an order of magnitude. Manually handle
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* instantiation for up to three arguments.
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*/
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switch (count($args)) {
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case 0:
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return new $class;
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case 1:
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return new $class($args[0]);
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case 2:
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return new $class($args[0], $args[1]);
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case 3:
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return new $class($args[0], $args[1], $args[2]);
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default:
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return call_user_func_array(array(new ReflectionClass($class),'newInstance'),
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$args);
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}
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}
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}
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