rss-bridge/lib/Format.php

<?php
require_once(__DIR__ . '/FormatInterface.php');
class Format{

    static protected $dirFormat;

    public function __construct(){
        throw new \LogicException('Please use ' . __CLASS__ . '::create for new object.');
    }

    static public function create($nameFormat){
        if( !preg_match('@^[A-Z][a-zA-Z]*$@', $nameFormat)){
            throw new \InvalidArgumentException('Name format must be at least one uppercase follow or not by alphabetic characters.');
        }

        $nameFormat=$nameFormat.'Format';
        $pathFormat = self::getDir() . $nameFormat . '.php';

        if( !file_exists($pathFormat) ){
            throw new \Exception('The format you looking for does not exist.');
        }

        require_once $pathFormat;

        return new $nameFormat();
    }

    static public function setDir($dirFormat){
        if( !is_string($dirFormat) ){
            throw new \InvalidArgumentException('Dir format must be a string.');
        }

        if( !file_exists($dirFormat) ){
            throw new \Exception('Dir format does not exist.');
        }

        self::$dirFormat = $dirFormat;
    }

    static public function getDir(){
        $dirFormat = self::$dirFormat;

        if( is_null($dirFormat) ){
            throw new \LogicException(__CLASS__ . ' class need to know format path !');
        }

        return $dirFormat;
    }

    /**
    * Read format dir and catch informations about each format depending annotation
    * @return array Informations about each format
    */
    static public function searchInformation(){
        $pathDirFormat = self::getDir();

        $listFormat = array();

        $searchCommonPattern = array('name');

        $dirFiles = scandir($pathDirFormat);
        if( $dirFiles !== false ){
          foreach( $dirFiles as $fileName ){
            if( preg_match('@^([^.]+)Format\.php$@U', $fileName, $out) ){ // Is PHP file ?
              $listFormat[] = $out[1];
            }
          }
        }

        return $listFormat;
    }
}