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| <?php
/**
* Copyright (C) 2011+ Martin Lacroix
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* @license GNU General Public License Version 3 (GPLv3)
* @link http://www.gnu.org/licenses/
*/
/**
* PHP_VER : PHP 5.3+
* LIBRARIES : SPL
* KEYWORDS : SPLOBJECTSTORAGE EXTENDED IMPROVED
* SPLOBJECTSTORAGE ETENDU AMELIORE
*
* Class managing an extended SplObjectStorage
* New features:
* - always move the internal pointer to the last object inserted into the storage
* - compute the hashcode of any arbitrary object without inserting it into the storage
* - read the hashcode of every or all objects in the storage
* - access an object by its hashcode or position in the storage
* - directly access the data attached to an object by its hashcode or position in the storage
*
* Classe gérant un SplObjectStorage amélioré
* Nouveautés :
* - déplace automatiquement le pointeur interne sur le dernier objet inséré
* - calcule le hashcode de n'importe quel objet sans l'insérer dans le silo
* - extraction d'un ou de tous les hashcodes du silo
* - sélection d'un objet identifié par son hashcode ou sa position dans le silo
* - lecture directe des infos attachées à un objet identifié par son hashcode ou sa position dans le silo
*
* @package tools
* @version 1.0.0
* @author Martin Lacroix
*/
class SplObjectStoragePlus extends SplObjectStorage {
private $_map = array();
private $_index = -1;
/**
* @param SplObjectStorage $storage
*/
function addAll(SplObjectStorage $storage) {
$storage->rewind();
while($storage->valid()) {
$this->offsetSet($storage->current(), $storage->getInfo());
$storage->next();
}
}
/**
* Add an object to the storage
* @param object $object
* @param mixed $data
*/
function attach($object, $data = NULL) {
$this->offsetSet($object, $data);
}
/**
* Remove an object from the storage
* @param object object
*/
function detach($object) {
$this->offsetUnset($object);
}
/**
* Add an object to the storage and set the internal pointer on it
* @param object $object
* @param mixed $data
*/
function offsetSet($object, $data = NULL) {
$hash = spl_object_hash($object);
if (FALSE === array_search($hash, $this->_map, TRUE)) {
parent::attach($object, $data);
$this->_map[++$this->_index] = $hash;
$this->selectObjectByKey($this->_index);
}
}
/**
* Remove an object from the storage
* @param object object
*/
function offsetUnset($object) {
$index = array_search(spl_object_hash($object), $this->_map, TRUE);
if (FALSE !== $index) {
parent::offsetUnset($object);
unset($this->_map[$index]);
}
}
/**
* @param SplObjectStorage $storage
*/
function removeAll(SplObjectStorage $storage) {
$storage->rewind();
while($storage->valid()) {
$this->offsetUnset($storage->current());
$storage->next();
}
}
/**
* @param SplObjectStorage $storage
*/
function removeAllExcept(SplObjectStorage $storage) {
parent::rewind();
while(parent::valid()) {
$current = parent::current();
parent::next();
if ( ! $storage->contains($current)) {
$this->offsetUnset($object);
}
}
}
/**
* Returns the hashcode of the current object
* @return string
*/
function getHash() {
return spl_object_hash(parent::current());
}
/**
* Returns the object identified by its hashcode
* @param string $hash
* @return object|NULL
*/
function getObjectByHash($hash) {
$index = array_search($hash, $this->_map);
if (FALSE !== $index) {
parent::rewind();
while(parent::valid()) {
if (parent::key() === $index) {
return parent::current();
}
parent::next();
}
}
}
/**
* Returns the position of an object in the storage
* Object identified by its hashcode
* @param string $hash
* @return int|NULL
*/
function getKeyByHash($hash) {
$index = array_search($hash, $this->_map, TRUE);
return (FALSE === $index) ? NULL : $index;
}
/**
* Returns the hashcode of an object identified by its position
* @param int $key
* @return string|NULL
*/
function getHashByKey($key) {
return $this->_map[$key];
}
/**
* Returns the data associated with an object identified by its hashcode
* @param string $hash
* @return mixed|NULL
*/
function getInfoByHash($hash) {
$index = array_search($hash, $this->_map, TRUE);
if (FALSE !== $index) {
return $this->getInfoByKey($index);
}
}
/**
* Returns the data associated with an object identified by its position
* @param int $key
* @return mixed|NULL
*/
function getInfoByKey($key) {
if (isset($this->_map[$key])) {
parent::rewind();
while(parent::valid()) {
if (parent::key() === $key) {
return parent::getInfo();
}
parent::next();
}
}
}
/**
* Move the internal pointer to an object identified by its hashcode
* @param mixed $hash
* @return bool FALSE if the object doesn't exist
*/
function selectObjectByHash($hash) {
$index = array_search($hash, $this->_map, TRUE);
return (FALSE !== $index)
? $this->selectObjectByKey($index)
: FALSE;
}
/**
* Move the internal pointer to an object identified by its position in the storage
* @param int $key
* @return bool FALSE if the object doesn't exist
*/
function selectObjectByKey($key) {
if (isset($this->_map[$key])) {
parent::rewind();
while(parent::valid()) {
if (parent::key() === $key) {
return TRUE;
}
parent::next();
}
}
return FALSE;
}
/**
* Returns the hashcode of the object in parameter
* @param mixed $object
* @return string
*/
static function computeHash($object) {
return spl_object_hash($object);
}
/**
* Returns the array of hashs
* @return array Array(position in the storage => hashcode)
*/
function allHashs() {
return $this->_map;
}
}
?> |
SplObjectStorage amélioré (3ème mot)
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