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<?php |
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// |
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// +----------------------------------------------------------------------+ |
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// | PHP Version 4 | |
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// +----------------------------------------------------------------------+ |
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// | Copyright (c) 1997-2003 The PHP Group | |
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// +----------------------------------------------------------------------+ |
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// | This source file is subject to version 2.02 of the PHP license, | |
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// | that is bundled with this package in the file LICENSE, and is | |
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// | available at through the world-wide-web at | |
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// | http://www.php.net/license/2_02.txt. | |
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// | If you did not receive a copy of the PHP license and are unable to | |
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// | obtain it through the world-wide-web, please send a note to | |
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// | license@php.net so we can mail you a copy immediately. | |
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// +----------------------------------------------------------------------+ |
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// | Authors: Wolfram Kriesing <wolfram@kriesing.de> | |
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// +----------------------------------------------------------------------+ |
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// |
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// $Id: Filesystem.php,v 1.3 2003/01/04 11:56:28 mj Exp $ |
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|
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require_once('Tree/Error.php'); |
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|
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/** |
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* the Filesystem interface to the tree class |
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* this is a bit different, as id we use the entire path, since we know |
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* this is unique in a filesystem and an integer id could only be created |
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* virtually, it doesnt have a tight connection to the actual directory |
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* i.e. using 'add' with ids could fail since we dont know if we get the same |
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* id when we call 'add' with a parentId to create a new folder under since our id would be made up. |
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* so we use the complete path as id, which takes up a lot of memory, i know |
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* but since php is typeless its possible and it makes life easier when |
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* we want to create another dir, since we get the dir as parentId passed to the |
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* 'add' method, whcih makes it easy to create a new dir there :-) |
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* i also thought about hashing the path name but then the add method is not that |
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* easy to implement ... may be one day :-) |
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* |
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* @access public |
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* @author Wolfram Kriesing <wolfram@kriesing.de> |
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* @version 2001/06/27 |
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* @package Tree |
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*/ |
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class Tree_Memory_Filesystem |
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{ |
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|
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/** |
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* @access public |
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* @var array saves the options passed to the constructor |
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*/ |
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var $options = array( 'order' =>'', // which column to order by when reading the data from the DB, this sorts the data even inside every level |
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// the column-name maps are used for the "as" in the select queries |
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// so you can use any column name in the table and "map" it to the name that shall be used in the |
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// internal array, that is built, see the examples (in comments) |
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'columnNameMaps'=>array( |
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/* 'id' => 'tree_id', // use "tree_id" as "id" |
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'parentId' => 'parent_id', |
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'prevId' => 'previous_id', |
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'name' => 'nodeName' |
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*/ |
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), |
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); |
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|
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/** |
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* set up this object |
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* |
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* @version 2002/08/23 |
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* @access public |
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* @author Wolfram Kriesing <wolfram@kriesing.de> |
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* @param string $dsn the path on the filesystem |
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* @param array $options additional options you can set |
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*/ |
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function Tree_Memory_Filesystem( $path , $options=array() ) |
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{ |
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$this->_path = $path; |
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$this->_options = $options; // not in use currently |
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/* $this->Tree_OptionsDB( $dsn , $options ); // instanciate DB |
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if( is_string($options) ) // just to be backward compatible, or to make the second paramter shorter |
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{ |
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$this->setOption( 'order' , $options ); |
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} |
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|
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$this->table = $this->getOption('table'); |
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*/ |
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} // end of function |
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|
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/** |
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* retreive all the navigation data from the db and call build to build the |
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* tree in the array data and structure |
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* |
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* @version 2001/11/20 |
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* @access public |
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* @author Wolfram Kriesing <wolfram@kriesing.de> |
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* @return boolean true on success |
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*/ |
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function setup() |
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{ |
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unset($this->data); // unset the data to be sure to get the real data again, no old data |
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if( is_dir($this->_path) ) |
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{ |
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$this->data[$this->_path] = array('id'=>$this->_path,'name'=>$this->_path,'parentId'=>0); |
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$this->_setup($this->_path,$this->_path); |
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} |
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|
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return $this->data; |
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} |
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|
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function _setup( $path , $parentId=0 ) |
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{ |
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if ($handle = opendir($path)) |
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{ |
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while (false !== ($file = readdir($handle))) |
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{ |
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if( $file != '.' && $file != '..' && is_dir("$path/$file")) |
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{ |
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#$id = sizeof($this->data); |
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$this->data[] = array('id'=>"$path/$file",'name'=>$file,'parentId'=>$parentId); |
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$this->_setup( "$path/$file" , "$path/$file" ); |
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} |
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} |
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closedir($handle); |
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} |
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|
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} |
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|
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|
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/** |
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* this is tricky on a filesystem, since we are working with id's |
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* as identifiers and we need to be sure, the parentId to create a node under |
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* is the same as when the tree was last read, but this might be tricky |
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* |
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*/ |
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function add( $newValues , $parent=0 , $prevId=0 ) |
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{ |
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if( !$parent ) |
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$parent = $this->path; |
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|
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# FIXXME do the mapping |
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if( !@mkdir( "$parent/{$newValues['name']}" , 0700 ) ) |
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return $this->_throwError('couldnt create dir '.$newValues['name'].' under '.$parent,__LINE__); |
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return "$parent/{$newValues['name']}"; |
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} |
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|
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function remove( $id ) |
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{ |
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if( !@rmdir( $id ) ) |
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return $this->_throwError('couldnt remove dir '.$id,__LINE__); |
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return true; |
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} |
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|
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function copy( $srcId , $destId ) |
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{ |
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# if( !@copy( $srcId , $destId ) ) this would only be for files :-) |
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# FIXXME loop through the directory to copy the children too !!! |
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|
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$dest = $destId.'/'.preg_replace('/^.*\//','',$srcId); |
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|
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if( is_dir( $dest ) ) |
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return $this->_throwError("couldnt copy, $destId already exists in $srcId " , __LINE__ ); |
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|
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if( !@mkdir( $dest , 0700 ) ) |
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return $this->_throwError("couldnt copy dir from $srcId to $destId " , __LINE__ ); |
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return true; |
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} |
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|
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/** |
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* |
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* |
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* @access private |
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* @version 2002/03/02 |
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* @author Wolfram Kriesing <wolfram@kriesing.de> |
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* @param |
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* @return |
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*/ |
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function _throwError( $msg , $line , $mode=null ) |
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{ |
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return new Tree_Error( $msg , $line , __FILE__ , $mode , $this->db->last_query ); |
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} |
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|
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/** |
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* prepare multiple results |
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* |
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* @see _prepareResult() |
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* @access private |
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* @version 2002/03/03 |
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* @author Wolfram Kriesing <wolfram@kriesing.de> |
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* @param |
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* @return |
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*/ |
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function _prepareResults( $results ) |
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{ |
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$newResults = array(); |
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foreach( $results as $aResult ) |
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$newResults[] = $this->_prepareResult($aResult); |
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return $newResults; |
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} |
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|
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/** |
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* map back the index names to get what is expected |
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* |
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* @access private |
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* @version 2002/03/03 |
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* @author Wolfram Kriesing <wolfram@kriesing.de> |
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* @param |
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* @return |
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*/ |
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function _prepareResult( $result ) |
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{ |
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$map = $this->getOption('columnNameMaps'); |
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|
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if( $map ) |
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foreach( $map as $key=>$columnName ) |
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{ |
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$result[$key] = $result[$columnName]; |
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unset($result[$columnName]); |
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} |
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return $result; |
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} |
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|
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|
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} // end of class |
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?> |
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