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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: XML.php,v 1.6 2003/01/04 11:56:28 mj Exp $ |
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|
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require_once "XML/Parser.php"; |
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|
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/** |
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* the XML interface for the tree class |
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* |
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* @package Tree |
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* @author |
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* @version |
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* @access public |
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*/ |
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class Tree_Memory_XML extends XML_Parser |
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{ |
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|
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/** |
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* @var array $data the first element has to be empty, so we can use the parentId=0 as "no parent" |
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*/ |
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var $data = array(0=>NULL); |
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|
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/** |
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* @var integer $level |
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*/ |
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var $level = 0; |
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|
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/** |
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* @var array $parentIdOnLevel |
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*/ |
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var $parentIdOnLevel = array(); |
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|
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/** |
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* @var boolean $folding set case folding for the XML_Parser to false |
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*/ |
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var $folding = false; // turn off case folding |
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|
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/** |
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* @var boolean if true it converts all attributes and tag names etc to lower case |
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* this is default, since i dont see no way of case insensitive comparison |
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* in the tree class, since you can access the internal data directly |
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* or you get them returned ... i know this is not 100% proper OOP but that's how it is right now |
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*/ |
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var $_toLower = true; |
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|
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/** |
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* |
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* |
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* @version 2002/01/17 |
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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 Tree_Memory_XML( $dsn , $options ) |
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{ |
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$handle = $dsn; |
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|
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$this->XML_Parser(); |
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|
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if (@is_resource($handle)) { |
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$this->setInput($handle); |
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} elseif ($handle != "") { |
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$this->setInputFile($handle); |
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} else { |
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return $this->raiseError("No filename passed."); |
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} |
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} |
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|
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/** |
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* |
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* |
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* @version 2002/01/17 |
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* @access public |
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* @author Wolfram Kriesing <wolfram@kriesing.de> |
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* @return boolean true on success |
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*/ |
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function startHandler($parser, $element, $attribs) |
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{ |
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$elementBeforeId = sizeof($this->data)-1; |
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$curId = sizeof($this->data); |
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|
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$this->data[$curId]['id'] = $curId; |
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$this->data[$curId]['name'] = $this->_toLower ? strtolower($element) : $element; |
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$this->data[$curId]['level'] = $this->level; |
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$this->data[$curId]['attributes'] = $attribs; |
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if( $this->_toLower ) |
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{ |
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$this->data[$curId]['attributes'] = array(); |
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foreach( $attribs as $key=>$value ) |
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$this->data[$curId]['attributes'][strtolower($key)] = $value; |
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} |
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|
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if( isset($this->data[$elementBeforeId]['level']) && |
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$this->level == $this->data[$elementBeforeId]['level'] ) // is that a new child, or just a 'next' of a child? |
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{ |
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$this->data[$curId]['parentId'] = $this->data[$elementBeforeId]['parentId']; |
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} |
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else // set stuff for the first child !!! |
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{ |
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if( $this->level>0 ) // the root has no parent |
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{ |
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$parentId = $this->parentIdOnLevel[$this->level-1]; |
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$this->data[$curId]['parentId'] = $parentId; |
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} |
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else |
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{ |
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$this->data[$curId]['parentId'] = 0; |
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} |
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} |
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$this->parentIdOnLevel[$this->level] = $curId; |
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|
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#print "$curId $element ".$this->data[$curId]['parentId'].'<br>'; |
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$this->level++; |
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} |
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|
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/** |
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* |
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* |
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* @version 2002/01/17 |
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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 endHandler($parser, $element) |
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{ |
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$this->level--; |
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} |
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|
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/** |
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* |
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* |
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* @version 2002/01/17 |
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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 cdataHandler($parser, $cdata) |
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{ |
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# QUESTION: why is this method called multiple times for one element? |
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# is every space a cdata ??? |
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# ANSWER: if you call xml_parse($parser, "foo ", false) and then |
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# xml_parse($parser, "bar", true), callbacks are done once |
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# for each xml_parse() call. |
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if( !isset($this->data[ sizeof($this->data)-1 ]['cdata']) ) |
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$this->data[ sizeof($this->data)-1 ]['cdata'] = ''; |
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#print "cdata = '$cdata'\r\n"; |
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$this->data[ sizeof($this->data)-1 ]['cdata'].= $cdata; |
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} |
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|
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/** |
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* |
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* |
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* @version 2002/01/17 |
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* @access public |
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* @author Wolfram Kriesing <wolfram@kriesing.de> |
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* @return boolean true on success |
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*/ |
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function defaultHandler($parser, $cdata) |
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{ |
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# $this->data[ sizeof($this->data)-1 ]['cdata'] = $cdata; |
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# not in use yet :-( is that ok?? |
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} |
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|
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|
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|
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|
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/** |
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* read the data from the xml file and prepare them so the tree |
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* class can work with it, the preparation is mainly done in startHandler |
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* |
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* @version 2002/01/17 |
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* @access public |
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* @author Wolfram Kriesing <wolfram@kriesing.de> |
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* @return boolean true on success |
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*/ |
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function setup() |
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{ |
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$this->parse(); |
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|
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return $this->data; |
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} // end of function |
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|
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/** |
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* read the data from an xml string and prepare them so the tree |
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* class can work with it, the preparation is mainly done in startHandler |
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* |
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* @version 2002/02/05 |
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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 setupByRawData( $xmlString ) |
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{ |
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$this->parseString( $xmlString , true ); |
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|
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return $this->data; |
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} |
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|
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/** |
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* TO BE IMPLEMNTED |
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* adds _one_ new element in the tree under the given parent |
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* the values' keys given have to match the db-columns, because the |
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* value gets inserted in the db directly |
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* to add an entire node containing children and so on see 'addNode()' |
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* |
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* @see addNode() |
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* @version 2001/10/09 |
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* @access public |
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* @author Wolfram Kriesing <wolfram@kriesing.de> |
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* @param array $newValues this array contains the values that shall be inserted in the db-table |
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* @return mixed either boolean false on failure or the id of the inserted row |
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*/ |
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/* function add( $newValues ) |
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{ |
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// add the data in the internal structure $this->data |
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$this->data[sizeof($this->data)] = $newValues; |
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# i am thinking if it might be a good solution to walk the data-array |
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# and write each line singlely until the one to add comes, write it and |
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# keep on writing the data-array |
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# but that means writing the entire file every time any method that |
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# changes the xml-file's structure the entire file is written, |
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# can that not be done somehow better ??? |
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|
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# // and regenerate the xml file |
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# $this->_writeFile(); |
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|
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} // end of function |
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*/ |
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/** |
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* TO BE IMPLEMNTED |
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* removes the given node |
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* |
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* @version 2001/10/09 |
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* @access public |
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* @author Wolfram Kriesing <wolfram@kriesing.de> |
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* @param mixed $id the id of the node to be removed |
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* @return boolean true on success |
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*/ |
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/* function remove( $id ) |
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{ |
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// remove the data from this->data |
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unset($this->data[$id]); |
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|
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# see comment in "add"-method |
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} // end of function |
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*/ |
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/** |
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* TO BE IMPLEMNTED |
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* move an entry under a given parent or behind a given entry |
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* |
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* @version 2001/10/10 |
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* @access public |
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* @author Wolfram Kriesing <wolfram@kriesing.de> |
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* @param |
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* @param |
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* @param integer if prevId is given the element with the id idToMove shall be moved _behind_ element with id=prevId |
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* before would be easier, but then no element could be inserted at the end :-/ |
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* @return boolean true for success |
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*/ |
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/* function move( $idToMove , $newParentId , $prevId=0 ) |
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{ |
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$this->data[$idToMove]['parentId'] = $newParentId; |
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$this->data[$idToMove]['prevId'] = $prevId; |
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|
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# see comment in "add"-method |
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} // end of function |
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*/ |
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|
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} |
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?> |
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