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// Add some comments in new autoload class

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This commit is contained in:
rMalie
2011-08-08 14:24:32 +00:00
parent e9f3a9e509
commit 884a2f4a9e
1 changed files with 97 additions and 54 deletions
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classes/Autoload.php
+97 -54
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@@ -1,25 +1,63 @@
<?php
/*
* 2007-2011 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
* @author PrestaShop SA <contact@prestashop.com>
* @copyright 2007-2011 PrestaShop SA
* @version Release: $Revision$
* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
* International Registered Trademark & Property of PrestaShop SA
*/
class Autoload
{
/**
* File where classes index is stored
*/
const INDEX_FILE = 'cache/class_index.php';
/**
* @var Autoload
*/
protected static $instance;
/**
* @var string Root directory
*/
protected $root_dir;
/**
* array('classname' => 'path/to/override', 'classnamecore' => 'path/to/class/core')
* @var array array('classname' => 'path/to/override', 'classnamecore' => 'path/to/class/core')
*/
public $index = array();
protected function __construct()
{
$this->root_dir = dirname(dirname(__FILE__)).'/';
if (file_exists($this->root_dir.Autoload::INDEX_FILE))
$this->index = include_once($this->root_dir.Autoload::INDEX_FILE);
}
/**
*
* Get instance of autoload (singleton)
*
* @return Autoload
*/
public static function getInstance()
{
@@ -28,54 +66,10 @@ class Autoload
return Autoload::$instance;
}
public function generateIndex()
{
$classes = array_merge(
$this->getClassesFromDir('classes/', true),
$this->getClassesFromDir('override/classes/', false)
);
$content = '<?php return '.var_export($classes, true).';';
$filename = $this->root_dir.Autoload::INDEX_FILE;
if ((file_exists($filename) && is_writable($filename)) || is_writable(dirname($filename)))
file_put_contents($filename, $content);
else
throw new Exception($filename.' is not writable!');
$this->index = include_once($this->root_dir.Autoload::INDEX_FILE);
}
protected function getClassesFromDir($path, $is_core)
{
$classes = array();
foreach (scandir($this->root_dir.$path) as $file)
{
if ($file[0] != '.')
{
if (is_dir($this->root_dir.$path.$file))
$classes = array_merge($classes, $this->getClassesFromDir($path.$file.'/', $is_core));
else if (substr($file, -4) == '.php')
{
$content = file_get_contents($this->root_dir.$path.$file);
if (preg_match('#\W((abstract\s+)?class|interface)\s+(?P<classname>'.basename($file, '.php').'(Core)?)(\s+(extends|implements)\s+[a-z][a-z0-9_]*)?\s*\{#i', $content, $m))
{
$classes[$m['classname']] = $path.$file;
if (substr($m['classname'], -4) == 'Core')
$classes[substr($m['classname'], 0, -4)] = '';
}
}
}
}
return $classes;
}
/**
*
*
* Retrive informations about a class in classes index and load it
*
* @param string $classname
*/
public function load($classname)
@@ -83,10 +77,8 @@ class Autoload
if (!isset($this->index[$classname]))
$this->generateIndex();
$is_core = (substr($classname, -4) == 'Core');
// If $classname has not core suffix (E.g. Shop, Product)
if (!$is_core)
if (substr($classname, -4) == 'Core')
{
// If requested class does not exist, load associated core class
if (isset($this->index[$classname]) && !$this->index[$classname])
@@ -121,5 +113,56 @@ class Autoload
throw new Exception('Class not found: '.$classname);
}
}
/**
* Generate classes index
*/
public function generateIndex()
{
$classes = array_merge(
$this->getClassesFromDir('classes/', true),
$this->getClassesFromDir('override/classes/', false)
);
$content = '<?php return '.var_export($classes, true).';';
// Write classes index on disc to cache it
$filename = $this->root_dir.Autoload::INDEX_FILE;
if ((file_exists($filename) && is_writable($filename)) || is_writable(dirname($filename)))
file_put_contents($filename, $content);
else
throw new Exception($filename.' is not writable!');
$this->index = $classes;
}
/**
* Retrive recursively all classes in a directory and its subdirectories
*
* @param unknown_type $path Relativ path from root to the directory
* @return array
*/
protected function getClassesFromDir($path)
{
$classes = array();
foreach (scandir($this->root_dir.$path) as $file)
{
if ($file[0] != '.')
{
if (is_dir($this->root_dir.$path.$file))
$classes = array_merge($classes, $this->getClassesFromDir($path.$file.'/'));
else if (substr($file, -4) == '.php')
{
$content = file_get_contents($this->root_dir.$path.$file);
if (preg_match('#\W((abstract\s+)?class|interface)\s+(?P<classname>'.basename($file, '.php').'(Core)?)(\s+(extends|implements)\s+[a-z][a-z0-9_]*)?\s*\{#i', $content, $m))
{
$classes[$m['classname']] = $path.$file;
if (substr($m['classname'], -4) == 'Core')
$classes[substr($m['classname'], 0, -4)] = '';
}
}
}
}
return $classes;
}
}