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Sequenzia/lib/Rails/Loader/Loader.php
2013-10-02 11:14:53 -05:00

121 lines
3.5 KiB
PHP
Executable File

<?php
namespace Rails\Loader;
use Closure;
use Rails;
use Rails\ActiveRecord\ActiveRecord;
use Rails\ActionMailer\ActionMailer;
use Rails\Loader\Exception;
class Loader
{
protected $paths = [];
protected $class_autoloaders = [];
protected $composerAutoloader;
public function __construct($paths = [])
{
if ($paths) {
$this->addPaths($paths);
}
$this->loadRequiredClasses();
}
public function setComposerAutoload(\Composer\Autoload\ClassLoader $loader)
{
$this->composerAutoloader = $loader;
}
public function addPath($path)
{
$this->addPaths((array)$path);
}
public function addPaths(array $paths)
{
$this->paths = array_merge($this->paths, $paths);
}
public function loadClass($class_name)
{
if ($this->runAutoloaders($class_name)) {
return;
}
if ($this->composerAutoloader->loadClass($class_name)) {
return;
}
if (is_int(strpos($class_name, '\\'))) {
$parts = explode('\\', $class_name);
$file = array_pop($parts);
$class_file_path = implode('/', $parts) . '/' . $file . '.php';
} else
$class_file_path = str_replace('_', '/', $class_name) . '.php';
$paths = $this->paths;
$found = false;
foreach ($paths as $path) {
if ($found = is_file(($class_file = $path . '/' . $class_file_path))) {
break;
}
}
if (!$found) {
require_once __DIR__ . '/Exception/FileNotFoundException.php';
throw new Exception\FileNotFoundException(sprintf("Couldn't find file for class %s, searched for %s in:\n%s", $class_name, $class_file_path, implode("\n", $paths)));
}
require $class_file;
if (!class_exists($class_name, false) && !interface_exists($class_name, false) && !trait_exists($class_name, false)) {
require_once __DIR__ . '/Exception/ClassNotFoundException.php';
throw new Exception\ClassNotFoundException(sprintf("File %s doesn't contain class/interface/trait %s.", $class_file, $class_name));
}
}
/**
* Autoloaders must return true is the class was
* successfuly loaded.
*/
public function registerAutoloader(callable $function)
{
$this->class_autoloaders[] = $function;
}
public function runAutoloaders($class_name)
{
foreach ($this->class_autoloaders as $autoload) {
if (is_array($autoload)) {
$object = $autoload[0];
$method = $autoload[1];
if (true === $object->$method($class_name)) {
return true;
}
} elseif (is_string($autoload)) {
if (true === call_user_func($autoload, $class_name))
return true;
} elseif ($autoload instanceof Closure) {
if (true === $autoload($class_name))
return true;
} else {
require_once __DIR__ . '/Exception/RuntimeException.php';
throw new Exception\RuntimeException(sprintf("Invalid autoloader type (%s)", gettype($autoload)));
}
}
return false;
}
/**
* Loader uses ActiveRecord and ActionMailer. These classes must be available.
*/
protected function loadRequiredClasses()
{
}
}