PHP Classes

File: Shelve.inc.php

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File: Shelve.inc.php
Role: ???
Content type: text/plain
Description: Shelve class
Class: PHP Shelve
Simple persistence mechanism for php objects
Author: By
Last change:
Date: 20 years ago
Size: 2,132 bytes
 

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<? // (C) 2002, Alexander Zhukov <alex@veresk.ru> class Shelve { var $_shlef; var $_keys = Array(); var $_objects = Array(); var $_deleted = Array(); function Shelve($shelf,$shelves_path = ".") { $this->_shelf = $shelves_path."/".$shelf; if(!is_dir($this->_shelf) ) { mkdir($this->_shelf,0700); $this->_save_index(); } $p = new Unpickle(new File($this->_shelf."/shelf.idx")); $this->_keys =& $p->load(); } function & get($key) { if(in_array($key,$this->_keys)) { if(!in_array($key,array_keys($this->_objects))) { $unpickle = new Unpickle(new File($this->_shelf."/".$key)); return $unpickle->load(); } return $this->_objects[$key]; } else { return false; } } function add($key,&$obj) { if(!in_array($key,$this->_keys) ) { $this->_keys[] = $key; $this->_objects[$key] =& $obj; return true; } else { return false; } } function put($key,&$obj) { if(in_array($key,$this->_keys) ) { $this->_objects[$key] =& $obj; return true; } else { return $this->add($key,$obj); } } function _save_object($key,&$obj) { $p = new Pickle(new File($this->_shelf."/".$key)); $p->dump($obj); } function _save_index() { $p = new Pickle(new File($this->_shelf."/shelf.idx")); $p->dump($this->_keys); } function del($key) { unset($this->_keys[array_search($key,$this->_keys)]); unset($this->_objects[$key]); $this->_deleted[] = $key; } function keys() { return $this->_keys; } function destroy() { unlink($this->_shelf."/shelf.idx"); foreach($this->_keys as $key) { if(is_file($this->_shelf."/".$key)) unlink($this->_shelf."/".$key) ; } return rmdir($this->_shelf); } function close() { foreach($this->_keys as $key) { $this->_save_object($key,$this->_objects[$key]); } $this->_save_index(); foreach($this->_deleted as $key) { $f = new File($this->_shelf."/".$key); $f->delete(); } } } ?>