<?php 

	abstract class CatalogManager {
		
		public static $MAX_SUBSTITUTIONS = 9;
		
		abstract protected function retrieveCatalog($index);
		
		public function getCatalog($index,&$data=null) {
//			if (is_array($index))var_dump($index);
			$reval = "";
			if(!is_null($data) && !is_array($data)) $data = array($data);
			if($index != null && trim($index) != "") {
				$reval = "" . $this->retrieveCatalog($index);
				if($reval != null) {
					if ($data!=null) $this->tokenize($reval,$data);
				}
				else $reval = $index;
			}
			return $reval;
		}
		
		
		/**
		 * Tokenizza la stringa di catalog
		 */
		protected function tokenize(&$catalog,&$data) {
				$matches = array();
				//implementation 3
				if(preg_match_all("/\{([0-9]|c[0-9])\}/",$catalog,$matches)) {
					$regas = $matches[1];
					if(!is_array($regas)) $regas = array($regas);
//					var_dump($regas);
					foreach( $regas as $idx) {
						if(preg_match("/^c[0-9]$/",$idx)) {
							$useidx = (int) substr($idx,1);
							$useidx--;
//							echo "useidx: $useidx $idx\n"; 
							$catalog = str_replace('{'. $idx . '}',$this->getCatalog((array_key_exists($useidx,$data)?$data[$useidx]:"")),$catalog);
						}
						else  {
							$useidx = (int) $idx;
							$useidx--;
//							echo "useidx: $useidx $idx\n";
							$catalog = str_replace('{'. $idx . '}',(array_key_exists($useidx,$data)?$data[$useidx]:""),$catalog);
						}
					}
				}
				
		}
		
		
	}
	
?>