BASH: TABLEAUX EN FICHIER

<?
class ArrayFile{
	var $dirTmp = '/var/tmp/';
	var $handleW = null;
	var $handleO = null;
	var $index = null;
	var $separator = '##';
	
	
	/*
		permet de switcher entre le mode fichier (très lent mais peu gourmand) 
		et mémoire (rapide mais très gourmand)
	*/
	var $typeOfStorage = 'file';//[file|mem] 
	var $aData = null;
/**
*Constructor
*$param: arrayName
*$param: dirTmp
*$param: typeOfStorage 
**/	
	function ArrayFile($arrayName='',$dirTmp='',$typeOfStorage = 'file'){
		$this->typeOfStorage = $typeOfStorage;
		if($this->typeOfStorage == 'file'){
			if(!$arrayName) $arrayName = uniqid(rand());
			if($dirTmp!='' && is_dir($dirTmp)) $this->dirTmp = $dirTmp;
			if(!is_dir($this->dirTmp.'arrayFile')) mkdir($this->dirTmp.'arrayFile');
			
			$this->dirTmp .='arrayFile/';
			$this->arrayName = date('Ymd_his').'_'.$arrayName;
			
			if(file_exists($this->dirTmp.$this->arrayName)) $this->rmFile();
			
			$this->handleW = fopen($this->dirTmp.$this->arrayName,'a');
			$this->handleO = fopen($this->dirTmp.$this->arrayName,'r');
		}
	}
	
	
/**
*
*
**/
	function rmFile(){
		exec("rm ".$this->dirTmp.$this->arrayName);	
	}
	
	
	
/**
* Empilage de $varMixed par index
*
*
**/
	function add($varMixed,$index=''){
		
		if(!$index){
			if(!$this->index) $this->index = 0;
			$mindex = $this->index;
		}else{
			$mindex = $index;
		}
		if($this->typeOfStorage == 'file'){
			fwrite($this->handleW,$this->separator.$mindex.$this->separator.serialize($varMixed)."\n");
		}else{
			$this->aData[$mindex][] = $varMixed;
		}
		if(!$index) $this->index++;
	}
	
	
/**
*Retourne toutes les occurences $index
*
**/		
	function get($index){
		if($index=='') return false;
		if($this->typeOfStorage == 'file'){
			$result = shell_exec("grep '".$this->separator.$index.$this->separator."' ".$this->dirTmp.$this->arrayName."  2>&1");
			$result = explode("\n",trim($result));
			//si vide
			if($result[0]=='' && count($result)==1) return false;
			
			if(!is_array($result)) return false;
			foreach($result as $line){
				$aTmp = explode($this->separator,trim($line));
				$aArray[] = unserialize($aTmp[2]);	
			}
		}else{
			$aArray = $this->aData[$index];
		}
		return $aArray;
	}
	
	
/**
*Ne retourne que le dernier élément ajouté pour index $index
*
**/		
	function getUniq($index){
		if($index=='') return false;
		$aResult = $this->get($index);
		if(!is_array($aResult)) return false;
		
		return array_pop($aResult);
	}
	
	
		
/***
* while(list($key,$value) = $aAlbum->foreachLine()){
	echo "key = $key ";
	print_r($value)."\n";
}
*
**/	
	function foreachLine(){
		
		if($this->typeOfStorage == 'file'){
			if(!feof($this->handleO)){
				$line = fgets($this->handleO, 4096);
				$aTmp = explode($this->separator,trim($line));
				if($aTmp[1]!=''){
					return array($aTmp[1],unserialize($aTmp[2]));
				}else{
					return $this->foreachLine();
				}
			}else{
				fseek($this->handleO, 0);
			}
		}else{
			list($k,$d) = each($this->aData);
			if($d!='') return array($k,$d);
			reset($this->aData);
			return false;
		}
		return false;
	}
/**
*
*
**/
	function unsetArray(){
		if($this->typeOfStorage == 'file'){
			fclose($this->handleW);
			fclose($this->handleO);
			$this->rmFile();
		}else{
			unset($this->aData);
		}
	}
}

?>