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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2003 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Authors: Wolfram Kriesing <wolfram@kriesing.de> |
// +----------------------------------------------------------------------+
//
// $Id: Array.php 320703 2011-12-08 22:08:40Z danielc $
require_once 'Tree/Error.php';
/**
* EXPERIMENTAL
*
* @access public
* @author Wolfram Kriesing <wolfram@kriesing.de>
* @version 2002/08/30
* @package Tree
*/
class Tree_Memory_Array
{
var $data = array();
/**
* this is the internal id that will be assigned if no id is given
* it simply counts from 1, so we can check if($id) i am lazy :-)
*/
var $_id = 1;
// {{{ Tree_Memory_Array()
/**
* set up this object
*
* @version 2002/08/30
* @access public
* @author Wolfram Kriesing <wolfram@kriesing.de>
* @param string $dsn the path on the filesystem
* @param array $options additional options you can set
*/
function Tree_Memory_Array(&$array, $options = array())
{
$this->_array = &$array;
$this->_options = $options; // not in use currently
}
// }}}
// {{{ setup()
/**
*
*
* @version 2002/08/30
* @access public
* @author Wolfram Kriesing <wolfram@kriesing.de>
* @return boolean true on success
*/
function setup()
{
unset($this->data);
if (is_array($this->_array)) {
$this->data[0] = null;
$theData = array(&$this->_array);
$this->_setup($theData);
}
return $this->data;
}
// }}}
// {{{ _setup()
/**
* we modify the $this->_array in here, we also add the id
* so methods like 'add' etc can find the elements they are searching for,
* if you dont like your data to be modified dont pass them as reference!
*/
function _setup(&$array, $parentId = 0)
{
foreach ($array as $nodeKey => $aNode) {
$newData = $aNode;
// if the current element has no id, we generate one
if (!isset($newData['id']) || !$newData['id']) {
// build a unique numeric id
$newData['id'] = $this->_id++;
// set the id
$array[$nodeKey]['id'] = $newData['id'];
} else {
$idAsInt = (int)$newData['id'];
if ($idAsInt > $this->_id) {
$this->_id = $idAsInt;
}
}
// set the parent-id, since we only have a 'children' array
$newData['parentId'] = $parentId;
$children = null;
// remove the 'children' array, since this is only info for
// this class
foreach ($newData as $key => $val) {
if ($key == 'children') {
unset($newData[$key]);
}
}
$this->data[$newData['id']] = $newData;
if (isset($aNode['children']) && $aNode['children']) {
if (!isset($array[$nodeKey]['children'])) {
$array[$nodeKey]['children'] = array();
}
$this->_setup($array[$nodeKey]['children'], $newData['id']);
}
}
}
// }}}
// {{{ setData()
/**
* this is mostly used by switchDataSource
* this method put data gotten from getNode() in the $this->_array
*
*/
function setData($data)
{
$unsetKeys = array('childId', 'left', 'right');
foreach ($data as $aNode) {
foreach ($aNode as $key => $val) {
if (is_array($val) || in_array($key,$unsetKeys)) {
unset($aNode[$key]);
}
}
$this->add($aNode,$aNode['parentId']);
}
$this->_array = $this->_array['children'][0];
}
// }}}
// {{{ _prepareResults()
/**
* prepare multiple results
*
* @see _prepareResult()
* @access private
* @version 2002/03/03
* @author Wolfram Kriesing <wolfram@kriesing.de>
*/
function _prepareResults($results)
{
$newResults = array();
foreach($results as $aResult) {
$newResults[] = $this->_prepareResult($aResult);
}
return $newResults;
}
// }}}
// {{{ _prepareResult()
/**
* map back the index names to get what is expected
*
* @access private
* @version 2002/03/03
* @author Wolfram Kriesing <wolfram@kriesing.de>
*/
function _prepareResult($result)
{
$map = $this->getOption('columnNameMaps');
if ($map) {
foreach($map as $key => $columnName) {
$result[$key] = $result[$columnName];
unset($result[$columnName]);
}
}
return $result;
}
// }}}
// {{{ add()
/**
* add a new item to the tree
* what is tricky here, we also need to add it to the source array
*
* @param array the data for the new node
* @param int the ID of the parent node
* @param int the ID of the previous node
*/
function add($data, $parentId, $previousId = null)
{
if (!isset($data['id'])) {
$data['id'] = ++$this->_id;
} elseif((int)$data['id'] > $this->_id) {
// Since we dont want to overwrite anything. just in case update
// the $this->_id if the data['id'] has a higher number.
$this->_id = (int)$data['id'];
}
$data['parentId'] = $parentId;
$this->data[$data['id']] = $data;
// there might not be a root element yet
if (!isset($this->_array['children'])) {
$data['parentId'] = 0;
$this->_array['children'][] = $data;
} else {
array_walk($this->_array['children'],
array(&$this,'_add'),
array($data,$parentId,$previousId)
);
}
return $data['id'];
}
// }}}
// {{{ _add()
/**
* we need to add the node to the source array
* for this we have this private method which loops through
* the source array and adds it in the right place
*
* @param mixed the value of the array, as a reference. So we work
* right on the source
* @param mixed the key of the node
* @param array an array which contains the following
* new data,
* parent ID under which to add the node,
* the prvious ID
*/
function _add(&$val, $key, $data)
{
// is the id of the current elment ($val) == to the parentId ($data[1])
if ($val['id'] == $data[1]) {
if (isset($data[2]) && $data[2] === 0) {
// if the previousId is 0 means, add it as the first member
$val['children'] = array_merge(array($data[0]), $val['children']);
} else {
$val['children'][] = $data[0];
}
} else { // if we havent found the new element go on searching
if (isset($val['children'])) {
array_walk($val['children'],array(&$this,'_add'),$data);
}
}
}
// }}}
// {{{ update()
/**
* update an entry with the given id and set the data as given
* in the array $data
*
* @param int the id of the element that shall be updated
* @param array the data, [key]=>[value]
* @return void
*/
function update($id,$data)
{
if ($this->_array['id']==$id) {
foreach ($data as $key=>$newVal) {
$this->_array[$key] = $newVal;
}
} else {
array_walk($this->_array['children'],
array(&$this,'_update'),
array($id,$data)
);
}
}
// }}}
// {{{ _update()
/**
* update the element with the given id
*
* @param array a reference to an element inside $this->_array
* has to be a reference, so we can really modify
* the actual data
* @param int not in use, but array_walk passes this param
* @param array [0] is the id we are searching for
* [1] are the new data we shall set
* @return void
*/
function _update(&$val, $key, $data)
{
// is the id of the current elment ($val) == to the parentId ($data[1])
if ($val['id'] == $data[0]) {
foreach ($data[1] as $key => $newVal) {
$val[$key] = $newVal;
}
} else {
// if we havent found the new element go on searching
// in the children
if (isset($val['children'])) {
array_walk($val['children'],array(&$this,'_update'), $data);
}
}
}
// }}}
// {{{ remove()
/**
* remove an element from the tree
* this removes all the children too
*
* @param int the id of the element to be removed
*/
function remove($id)
{
// we only need to search for element that do exist :-)
// otherwise we save some processing time
if ($this->data[$id]) {
$this->_remove($this->_array,$id);
}
}
// }}}
// {{{ _remove()
/**
* remove the element with the given id
* this will definitely remove all the children too
*
* @param array a reference to an element inside $this->_array
* has to be a reference, so we can really modify
* the actual data
* @param int the id of the element to be removed
* @return void
*/
function _remove(&$val, $id)
{
if (isset($val['children'])) {
foreach ($val['children'] as $key => $aVal) {
if ($aVal['id'] == $id) {
if (sizeof($val['children']) < 2) {
unset($val['children']);
} else {
unset($val['children'][$key]);
}
} else {
$this->_remove($val['children'][$key],$id);
}
}
}
}
// }}}
}
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