Rss-Bridge/lib/Bridge.php

107 lines
2.6 KiB
PHP
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2013-08-11 13:30:41 +02:00
<?php
require_once(__DIR__ . '/BridgeInterface.php');
class Bridge {
static protected $dirBridge;
public function __construct(){
throw new \LogicException('Please use ' . __CLASS__ . '::create for new object.');
}
/**
* Checks if a bridge is an instantiable bridge.
* @param string $nameBridge name of the bridge that you want to use
* @return true if it is an instantiable bridge, false otherwise.
*/
static public function isInstantiable($nameBridge){
$re = new ReflectionClass($nameBridge);
return $re->IsInstantiable();
}
/**
* Create a new bridge object
* @param string $nameBridge Defined bridge name you want use
* @return Bridge object dedicated
*/
static public function create($nameBridge){
if(!preg_match('@^[A-Z][a-zA-Z0-9-]*$@', $nameBridge)){
$message = <<<EOD
'nameBridge' must start with one uppercase character followed or not by
alphanumeric or dash characters!
EOD;
throw new \InvalidArgumentException($message);
}
$nameBridge = $nameBridge . 'Bridge';
$pathBridge = self::getDir() . $nameBridge . '.php';
if(!file_exists($pathBridge)){
throw new \Exception('The bridge you looking for does not exist.'
. ' It should be at path '
. $pathBridge);
}
require_once $pathBridge;
if(Bridge::isInstantiable($nameBridge)){
return new $nameBridge();
} else {
return false;
}
}
static public function setDir($dirBridge){
if(!is_string($dirBridge)){
throw new \InvalidArgumentException('Dir bridge must be a string.');
}
if(!file_exists($dirBridge)){
throw new \Exception('Dir bridge does not exist.');
}
self::$dirBridge = $dirBridge;
}
static public function getDir(){
$dirBridge = self::$dirBridge;
if(is_null($dirBridge)){
throw new \LogicException(__CLASS__ . ' class need to know bridge path !');
}
return $dirBridge;
}
/**
* Lists the available bridges.
* @return array List of the bridges
*/
static public function listBridges(){
$pathDirBridge = self::getDir();
$listBridge = array();
$dirFiles = scandir($pathDirBridge);
if($dirFiles !== false){
foreach($dirFiles as $fileName){
if(preg_match('@^([^.]+)Bridge\.php$@U', $fileName, $out)){
$listBridge[] = $out[1];
}
}
}
return $listBridge;
}
static public function isWhitelisted($whitelist, $name){
if(in_array($name, $whitelist)
|| in_array($name . '.php', $whitelist)
|| in_array($name . 'Bridge', $whitelist) // DEPRECATED
|| in_array($name . 'Bridge.php', $whitelist) // DEPRECATED
|| count($whitelist) === 1 and trim($whitelist[0]) === '*'){
return true;
} else {
return false;
}
}
}