Aktualisierung auf Version 1.8.1

1 files changed, 854 insertions, 0 deletions

diff --git a/includes/api/ApiFormatYaml_spyc.php b/includes/api/ApiFormatYaml_spyc.php
new file mode 100644
index 00000000..05a39e23
--- /dev/null
+++ b/includes/api/ApiFormatYaml_spyc.php
@@ -0,0 +1,854 @@
+<?php
+  /** 
+   * Spyc -- A Simple PHP YAML Class
+   * @version 0.2.3 -- 2006-02-04
+   * @author Chris Wanstrath <chris@ozmm.org>
+   * @link http://spyc.sourceforge.net/
+   * @copyright Copyright 2005-2006 Chris Wanstrath
+   * @license http://www.opensource.org/licenses/mit-license.php MIT License
+   * @package Spyc
+   */
+
+  /** 
+   * A node, used by Spyc for parsing YAML.
+   * @package Spyc
+   */
+  class YAMLNode {
+    /**#@+
+     * @access public
+     * @var string
+     */ 
+    var $parent;
+    var $id;
+    /**#@+*/
+    /** 
+     * @access public
+     * @var mixed
+     */
+    var $data;
+    /** 
+     * @access public
+     * @var int
+     */
+    var $indent;
+    /** 
+     * @access public
+     * @var bool
+     */
+    var $children = false;
+
+    /**
+     * The constructor assigns the node a unique ID.
+     * @access public
+     * @return void
+     */
+    function YAMLNode() {
+      $this->id = uniqid('');
+    }
+  }
+
+  /**
+   * The Simple PHP YAML Class.
+   *
+   * This class can be used to read a YAML file and convert its contents
+   * into a PHP array.  It currently supports a very limited subsection of
+   * the YAML spec.
+   *
+   * Usage:
+   * <code>
+   *   $parser = new Spyc;
+   *   $array  = $parser->load($file);
+   * </code>
+   * @package Spyc
+   */
+  class Spyc {
+    
+    /**
+     * Load YAML into a PHP array statically
+     *
+     * The load method, when supplied with a YAML stream (string or file), 
+     * will do its best to convert YAML in a file into a PHP array.  Pretty 
+     * simple.
+     *  Usage: 
+     *  <code>
+     *   $array = Spyc::YAMLLoad('lucky.yml');
+     *   print_r($array);
+     *  </code>
+     * @access public
+     * @return array
+     * @param string $input Path of YAML file or string containing YAML
+     */
+    function YAMLLoad($input) {
+      $spyc = new Spyc;
+      return $spyc->load($input);
+    }
+    
+    /**
+     * Dump YAML from PHP array statically
+     *
+     * The dump method, when supplied with an array, will do its best
+     * to convert the array into friendly YAML.  Pretty simple.  Feel free to
+     * save the returned string as nothing.yml and pass it around.
+     *
+     * Oh, and you can decide how big the indent is and what the wordwrap
+     * for folding is.  Pretty cool -- just pass in 'false' for either if 
+     * you want to use the default.
+     *
+     * Indent's default is 2 spaces, wordwrap's default is 40 characters.  And
+     * you can turn off wordwrap by passing in 0.
+     *
+     * @access public
+     * @static
+     * @return string
+     * @param array $array PHP array
+     * @param int $indent Pass in false to use the default, which is 2 
+     * @param int $wordwrap Pass in 0 for no wordwrap, false for default (40)
+     */
+    public static function YAMLDump($array,$indent = false,$wordwrap = false) {
+      $spyc = new Spyc;
+      return $spyc->dump($array,$indent,$wordwrap);
+    }
+  
+    /**
+     * Load YAML into a PHP array from an instantiated object
+     *
+     * The load method, when supplied with a YAML stream (string or file path), 
+     * will do its best to convert the YAML into a PHP array.  Pretty simple.
+     *  Usage: 
+     *  <code>
+     *   $parser = new Spyc;
+     *   $array  = $parser->load('lucky.yml');
+     *   print_r($array);
+     *  </code>
+     * @access public
+     * @return array
+     * @param string $input Path of YAML file or string containing YAML
+     */
+    function load($input) {
+      // See what type of input we're talking about
+      // If it's not a file, assume it's a string
+      if (!empty($input) && (strpos($input, "\n") === false) 
+          && file_exists($input)) {
+        $yaml = file($input);
+      } else {
+        $yaml = explode("\n",$input);
+      }
+      // Initiate some objects and values
+      $base              = new YAMLNode;
+      $base->indent      = 0;
+      $this->_lastIndent = 0;
+      $this->_lastNode   = $base->id;
+      $this->_inBlock    = false;
+      $this->_isInline   = false;
+  
+      foreach ($yaml as $linenum => $line) {
+        $ifchk = trim($line);
+
+        // If the line starts with a tab (instead of a space), throw a fit.
+        if (preg_match('/^(\t)+(\w+)/', $line)) {
+          $err = 'ERROR: Line '. ($linenum + 1) .' in your input YAML begins'.
+                 ' with a tab.  YAML only recognizes spaces.  Please reformat.';
+          die($err);
+        }
+        
+        if ($this->_inBlock === false && empty($ifchk)) {
+          continue;
+        } elseif ($this->_inBlock == true && empty($ifchk)) {
+          $last =& $this->_allNodes[$this->_lastNode];
+          $last->data[key($last->data)] .= "\n";
+        } elseif ($ifchk{0} != '#' && substr($ifchk,0,3) != '---') {
+          // Create a new node and get its indent
+          $node         = new YAMLNode;
+          $node->indent = $this->_getIndent($line);
+          
+          // Check where the node lies in the hierarchy
+          if ($this->_lastIndent == $node->indent) {
+            // If we're in a block, add the text to the parent's data
+            if ($this->_inBlock === true) {
+              $parent =& $this->_allNodes[$this->_lastNode];
+              $parent->data[key($parent->data)] .= trim($line).$this->_blockEnd;
+            } else {
+              // The current node's parent is the same as the previous node's
+              if (isset($this->_allNodes[$this->_lastNode])) {
+                $node->parent = $this->_allNodes[$this->_lastNode]->parent;
+              }
+            }
+          } elseif ($this->_lastIndent < $node->indent) {            
+            if ($this->_inBlock === true) {
+              $parent =& $this->_allNodes[$this->_lastNode];
+              $parent->data[key($parent->data)] .= trim($line).$this->_blockEnd;
+            } elseif ($this->_inBlock === false) {
+              // The current node's parent is the previous node
+              $node->parent = $this->_lastNode;
+              
+              // If the value of the last node's data was > or | we need to 
+              // start blocking i.e. taking in all lines as a text value until 
+              // we drop our indent.
+              $parent =& $this->_allNodes[$node->parent];
+              $this->_allNodes[$node->parent]->children = true;
+              if (is_array($parent->data)) {
+                $chk = $parent->data[key($parent->data)];
+                if ($chk === '>') {
+                  $this->_inBlock  = true;
+                  $this->_blockEnd = ' ';
+                  $parent->data[key($parent->data)] = 
+                        str_replace('>','',$parent->data[key($parent->data)]);
+                  $parent->data[key($parent->data)] .= trim($line).' ';
+                  $this->_allNodes[$node->parent]->children = false;
+                  $this->_lastIndent = $node->indent;
+                } elseif ($chk === '|') {
+                  $this->_inBlock  = true;
+                  $this->_blockEnd = "\n";
+                  $parent->data[key($parent->data)] =               
+                        str_replace('|','',$parent->data[key($parent->data)]);
+                  $parent->data[key($parent->data)] .= trim($line)."\n";
+                  $this->_allNodes[$node->parent]->children = false;
+                  $this->_lastIndent = $node->indent;
+                }
+              }
+            }
+          } elseif ($this->_lastIndent > $node->indent) {
+            // Any block we had going is dead now
+            if ($this->_inBlock === true) {
+              $this->_inBlock = false;
+              if ($this->_blockEnd = "\n") {
+                $last =& $this->_allNodes[$this->_lastNode];
+                $last->data[key($last->data)] = 
+                      trim($last->data[key($last->data)]);
+              }
+            }
+            
+            // We don't know the parent of the node so we have to find it
+            // foreach ($this->_allNodes as $n) {
+            foreach ($this->_indentSort[$node->indent] as $n) {
+              if ($n->indent == $node->indent) {
+                $node->parent = $n->parent;
+              }
+            }
+          }
+        
+          if ($this->_inBlock === false) {
+            // Set these properties with information from our current node
+            $this->_lastIndent = $node->indent;
+            // Set the last node
+            $this->_lastNode = $node->id;
+            // Parse the YAML line and return its data
+            $node->data = $this->_parseLine($line);
+            // Add the node to the master list
+            $this->_allNodes[$node->id] = $node;
+            // Add a reference to the node in an indent array
+            $this->_indentSort[$node->indent][] =& $this->_allNodes[$node->id];
+            // Add a reference to the node in a References array if this node
+            // has a YAML reference in it.
+            if ( 
+              ( (is_array($node->data)) &&
+                isset($node->data[key($node->data)]) &&
+                (!is_array($node->data[key($node->data)])) )
+              &&
+              ( (preg_match('/^&([^ ]+)/',$node->data[key($node->data)])) 
+                || 
+                (preg_match('/^\*([^ ]+)/',$node->data[key($node->data)])) )
+            ) {
+                $this->_haveRefs[] =& $this->_allNodes[$node->id];
+            } elseif (
+              ( (is_array($node->data)) &&
+                isset($node->data[key($node->data)]) &&
+                 (is_array($node->data[key($node->data)])) )
+            ) {
+              // Incomplete reference making code.  Ugly, needs cleaned up.
+              foreach ($node->data[key($node->data)] as $d) {
+                if ( !is_array($d) && 
+                  ( (preg_match('/^&([^ ]+)/',$d)) 
+                    || 
+                    (preg_match('/^\*([^ ]+)/',$d)) )
+                  ) {
+                    $this->_haveRefs[] =& $this->_allNodes[$node->id];
+                }
+              }
+            }
+          }
+        }
+      }
+      unset($node);
+      
+      // Here we travel through node-space and pick out references (& and *)
+      $this->_linkReferences();
+      
+      // Build the PHP array out of node-space
+      $trunk = $this->_buildArray();
+      return $trunk;
+    }
+  
+    /**
+     * Dump PHP array to YAML
+     *
+     * The dump method, when supplied with an array, will do its best
+     * to convert the array into friendly YAML.  Pretty simple.  Feel free to
+     * save the returned string as tasteful.yml and pass it around.
+     *
+     * Oh, and you can decide how big the indent is and what the wordwrap
+     * for folding is.  Pretty cool -- just pass in 'false' for either if 
+     * you want to use the default.
+     *
+     * Indent's default is 2 spaces, wordwrap's default is 40 characters.  And
+     * you can turn off wordwrap by passing in 0.
+     *
+     * @access public
+     * @return string
+     * @param array $array PHP array
+     * @param int $indent Pass in false to use the default, which is 2 
+     * @param int $wordwrap Pass in 0 for no wordwrap, false for default (40)
+     */
+    function dump($array,$indent = false,$wordwrap = false) {
+      // Dumps to some very clean YAML.  We'll have to add some more features
+      // and options soon.  And better support for folding.
+
+      // New features and options.
+      if ($indent === false or !is_numeric($indent)) {
+        $this->_dumpIndent = 2;
+      } else {
+        $this->_dumpIndent = $indent;
+      }
+      
+      if ($wordwrap === false or !is_numeric($wordwrap)) {
+        $this->_dumpWordWrap = 40;
+      } else {
+        $this->_dumpWordWrap = $wordwrap;
+      }
+      
+      // New YAML document
+      $string = "---\n";
+      
+      // Start at the base of the array and move through it.
+      foreach ($array as $key => $value) {
+        $string .= $this->_yamlize($key,$value,0);
+      }
+      return $string;
+    }
+  
+    /**** Private Properties ****/
+    
+    /**#@+
+     * @access private
+     * @var mixed
+     */ 
+    var $_haveRefs;
+    var $_allNodes;
+    var $_lastIndent;
+    var $_lastNode;
+    var $_inBlock;
+    var $_isInline;
+    var $_dumpIndent;
+    var $_dumpWordWrap;
+    /**#@+*/
+
+    /**** Private Methods ****/
+    
+    /**
+     * Attempts to convert a key / value array item to YAML
+     * @access private
+     * @return string
+     * @param $key The name of the key
+     * @param $value The value of the item
+     * @param $indent The indent of the current node
+     */    
+    function _yamlize($key,$value,$indent) {
+      if (is_array($value)) {
+        // It has children.  What to do?
+        // Make it the right kind of item
+        $string = $this->_dumpNode($key,NULL,$indent);
+        // Add the indent
+        $indent += $this->_dumpIndent;
+        // Yamlize the array
+        $string .= $this->_yamlizeArray($value,$indent);
+      } elseif (!is_array($value)) {
+        // It doesn't have children.  Yip.
+        $string = $this->_dumpNode($key,$value,$indent);
+      }
+      return $string;
+    }
+    
+    /**
+     * Attempts to convert an array to YAML
+     * @access private
+     * @return string
+     * @param $array The array you want to convert
+     * @param $indent The indent of the current level
+     */ 
+    function _yamlizeArray($array,$indent) {
+      if (is_array($array)) {
+        $string = '';
+        foreach ($array as $key => $value) {
+          $string .= $this->_yamlize($key,$value,$indent);
+        }
+        return $string;
+      } else {
+        return false;
+      }
+    }
+  
+    /**
+     * Returns YAML from a key and a value
+     * @access private
+     * @return string
+     * @param $key The name of the key
+     * @param $value The value of the item
+     * @param $indent The indent of the current node
+     */ 
+    function _dumpNode($key,$value,$indent) {
+      // do some folding here, for blocks
+      if (strpos($value,"\n")) {
+        $value = $this->_doLiteralBlock($value,$indent);
+      } else {  
+        $value  = $this->_doFolding($value,$indent);
+      }
+      
+      $spaces = str_repeat(' ',$indent);
+
+      if (is_int($key)) {
+        // It's a sequence
+        $string = $spaces.'- '.$value."\n";
+      } else {
+        // It's mapped
+        $string = $spaces.$key.': '.$value."\n";
+      }
+      return $string;
+    }
+
+    /**
+     * Creates a literal block for dumping
+     * @access private
+     * @return string
+     * @param $value 
+     * @param $indent int The value of the indent
+     */ 
+    function _doLiteralBlock($value,$indent) {
+      $exploded = explode("\n",$value);
+      $newValue = '|';
+      $indent  += $this->_dumpIndent;
+      $spaces   = str_repeat(' ',$indent);
+      foreach ($exploded as $line) {
+        $newValue .= "\n" . $spaces . trim($line);
+      }
+      return $newValue;
+    }
+    
+    /**
+     * Folds a string of text, if necessary
+     * @access private
+     * @return string
+     * @param $value The string you wish to fold
+     */
+    function _doFolding($value,$indent) {
+      // Don't do anything if wordwrap is set to 0
+      if ($this->_dumpWordWrap === 0) {
+        return $value;
+      }
+      
+      if (strlen($value) > $this->_dumpWordWrap) {
+        $indent += $this->_dumpIndent;
+        $indent = str_repeat(' ',$indent);
+        $wrapped = wordwrap($value,$this->_dumpWordWrap,"\n$indent");
+        $value   = ">\n".$indent.$wrapped;
+      }
+      return $value;
+    }
+  
+    /* Methods used in loading */
+    
+    /**
+     * Finds and returns the indentation of a YAML line
+     * @access private
+     * @return int
+     * @param string $line A line from the YAML file
+     */
+    function _getIndent($line) {
+      preg_match('/^\s{1,}/',$line,$match);
+      if (!empty($match[0])) {
+        $indent = substr_count($match[0],' ');
+      } else {
+        $indent = 0;
+      }
+      return $indent;
+    }
+
+    /**
+     * Parses YAML code and returns an array for a node
+     * @access private
+     * @return array
+     * @param string $line A line from the YAML file
+     */
+    function _parseLine($line) {
+      $line = trim($line);  
+
+      $array = array();
+
+      if (preg_match('/^-(.*):$/',$line)) {
+        // It's a mapped sequence
+        $key         = trim(substr(substr($line,1),0,-1));
+        $array[$key] = '';
+      } elseif ($line[0] == '-' && substr($line,0,3) != '---') {
+        // It's a list item but not a new stream
+        if (strlen($line) > 1) {
+          $value   = trim(substr($line,1));
+          // Set the type of the value.  Int, string, etc
+          $value   = $this->_toType($value);
+          $array[] = $value;
+        } else {
+          $array[] = array();
+        }
+      } elseif (preg_match('/^(.+):/',$line,$key)) {
+        // It's a key/value pair most likely
+        // If the key is in double quotes pull it out
+        if (preg_match('/^(["\'](.*)["\'](\s)*:)/',$line,$matches)) {
+          $value = trim(str_replace($matches[1],'',$line));
+          $key   = $matches[2];
+        } else {
+          // Do some guesswork as to the key and the value
+          $explode = explode(':',$line);
+          $key     = trim($explode[0]);
+          array_shift($explode);
+          $value   = trim(implode(':',$explode));
+        }
+
+        // Set the type of the value.  Int, string, etc
+        $value = $this->_toType($value);
+        if (empty($key)) {
+          $array[]     = $value;
+        } else {
+          $array[$key] = $value;
+        }
+      }
+      return $array;
+    }
+    
+    /**
+     * Finds the type of the passed value, returns the value as the new type.
+     * @access private
+     * @param string $value
+     * @return mixed
+     */
+    function _toType($value) {
+      if (preg_match('/^("(.*)"|\'(.*)\')/',$value,$matches)) {        
+       $value = (string)preg_replace('/(\'\'|\\\\\')/',"'",end($matches));
+       $value = preg_replace('/\\\\"/','"',$value);
+      } elseif (preg_match('/^\\[(.+)\\]$/',$value,$matches)) {
+        // Inline Sequence
+
+        // Take out strings sequences and mappings
+        $explode = $this->_inlineEscape($matches[1]);
+        
+        // Propogate value array
+        $value  = array();
+        foreach ($explode as $v) {
+          $value[] = $this->_toType($v);
+        }
+      } elseif (strpos($value,': ')!==false && !preg_match('/^{(.+)/',$value)) {
+          // It's a map
+          $array = explode(': ',$value);
+          $key   = trim($array[0]);
+          array_shift($array);
+          $value = trim(implode(': ',$array));
+          $value = $this->_toType($value);
+          $value = array($key => $value);
+      } elseif (preg_match("/{(.+)}$/",$value,$matches)) {
+        // Inline Mapping
+
+        // Take out strings sequences and mappings
+        $explode = $this->_inlineEscape($matches[1]);
+
+        // Propogate value array
+        $array = array();
+        foreach ($explode as $v) {
+          $array = $array + $this->_toType($v);
+        }
+        $value = $array;
+      } elseif (strtolower($value) == 'null' or $value == '' or $value == '~') {
+        $value = NULL;
+      } elseif (ctype_digit($value)) {
+        $value = (int)$value;
+      } elseif (in_array(strtolower($value), 
+                  array('true', 'on', '+', 'yes', 'y'))) {
+        $value = TRUE;
+      } elseif (in_array(strtolower($value), 
+                  array('false', 'off', '-', 'no', 'n'))) {
+        $value = FALSE;
+      } elseif (is_numeric($value)) {
+        $value = (float)$value;
+      } else {
+        // Just a normal string, right?
+        $value = trim(preg_replace('/#(.+)$/','',$value));
+      }
+      
+      return $value;
+    }
+    
+    /**
+     * Used in inlines to check for more inlines or quoted strings
+     * @access private
+     * @return array
+     */
+    function _inlineEscape($inline) {
+      // There's gotta be a cleaner way to do this...
+      // While pure sequences seem to be nesting just fine,
+      // pure mappings and mappings with sequences inside can't go very
+      // deep.  This needs to be fixed.
+      
+      // Check for strings      
+      $regex = '/(?:(")|(?:\'))((?(1)[^"]+|[^\']+))(?(1)"|\')/';
+      if (preg_match_all($regex,$inline,$strings)) {
+        $saved_strings[] = $strings[0][0];
+        $inline  = preg_replace($regex,'YAMLString',$inline); 
+      }
+      unset($regex);
+
+      // Check for sequences
+      if (preg_match_all('/\[(.+)\]/U',$inline,$seqs)) {
+        $inline = preg_replace('/\[(.+)\]/U','YAMLSeq',$inline);
+        $seqs   = $seqs[0];
+      }
+      
+      // Check for mappings
+      if (preg_match_all('/{(.+)}/U',$inline,$maps)) {
+        $inline = preg_replace('/{(.+)}/U','YAMLMap',$inline);
+        $maps   = $maps[0];
+      }
+      
+      $explode = explode(', ',$inline);
+
+      // Re-add the strings
+      if (!empty($saved_strings)) {
+        $i = 0;
+        foreach ($explode as $key => $value) {
+          if (strpos($value,'YAMLString')) {
+            $explode[$key] = str_replace('YAMLString',$saved_strings[$i],$value);
+            ++$i;
+          }
+        }
+      }
+
+      // Re-add the sequences
+      if (!empty($seqs)) {
+        $i = 0;
+        foreach ($explode as $key => $value) {
+          if (strpos($value,'YAMLSeq') !== false) {
+            $explode[$key] = str_replace('YAMLSeq',$seqs[$i],$value);
+            ++$i;
+          }
+        }
+      }
+      
+      // Re-add the mappings
+      if (!empty($maps)) {
+        $i = 0;
+        foreach ($explode as $key => $value) {
+          if (strpos($value,'YAMLMap') !== false) {
+            $explode[$key] = str_replace('YAMLMap',$maps[$i],$value);
+            ++$i;
+          }
+        }
+      }
+
+      return $explode;
+    }
+  
+    /**
+     * Builds the PHP array from all the YAML nodes we've gathered
+     * @access private
+     * @return array
+     */
+    function _buildArray() {
+      $trunk = array();
+
+      if (!isset($this->_indentSort[0])) {
+        return $trunk;
+      }
+
+      foreach ($this->_indentSort[0] as $n) {
+        if (empty($n->parent)) {
+          $this->_nodeArrayizeData($n);
+          // Check for references and copy the needed data to complete them.
+          $this->_makeReferences($n);
+          // Merge our data with the big array we're building
+          $trunk = $this->_array_kmerge($trunk,$n->data);
+        }
+      }
+      
+      return $trunk;
+    }
+  
+    /**
+     * Traverses node-space and sets references (& and *) accordingly
+     * @access private
+     * @return bool
+     */
+    function _linkReferences() {
+      if (is_array($this->_haveRefs)) {
+        foreach ($this->_haveRefs as $node) {
+          if (!empty($node->data)) {
+            $key = key($node->data);
+            // If it's an array, don't check.
+            if (is_array($node->data[$key])) {  
+              foreach ($node->data[$key] as $k => $v) {
+                $this->_linkRef($node,$key,$k,$v);
+              }
+            } else {
+              $this->_linkRef($node,$key);
+            }
+          }
+        } 
+      }
+      return true;
+    }
+    
+    function _linkRef(&$n,$key,$k = NULL,$v = NULL) {
+      if (empty($k) && empty($v)) {
+        // Look for &refs
+        if (preg_match('/^&([^ ]+)/',$n->data[$key],$matches)) {
+          // Flag the node so we know it's a reference
+          $this->_allNodes[$n->id]->ref = substr($matches[0],1);
+          $this->_allNodes[$n->id]->data[$key] = 
+                   substr($n->data[$key],strlen($matches[0])+1);
+        // Look for *refs
+        } elseif (preg_match('/^\*([^ ]+)/',$n->data[$key],$matches)) {
+          $ref = substr($matches[0],1);
+          // Flag the node as having a reference
+          $this->_allNodes[$n->id]->refKey =  $ref;
+        }
+      } elseif (!empty($k) && !empty($v)) {
+        if (preg_match('/^&([^ ]+)/',$v,$matches)) {
+          // Flag the node so we know it's a reference
+          $this->_allNodes[$n->id]->ref = substr($matches[0],1);
+          $this->_allNodes[$n->id]->data[$key][$k] = 
+                              substr($v,strlen($matches[0])+1);
+        // Look for *refs
+        } elseif (preg_match('/^\*([^ ]+)/',$v,$matches)) {
+          $ref = substr($matches[0],1);
+          // Flag the node as having a reference
+          $this->_allNodes[$n->id]->refKey =  $ref;
+        }
+      }
+    }
+  
+    /**
+     * Finds the children of a node and aids in the building of the PHP array
+     * @access private
+     * @param int $nid The id of the node whose children we're gathering
+     * @return array
+     */
+    function _gatherChildren($nid) {
+      $return = array();
+      $node   =& $this->_allNodes[$nid];
+      foreach ($this->_allNodes as $z) {
+        if ($z->parent == $node->id) {
+          // We found a child
+          $this->_nodeArrayizeData($z);
+          // Check for references
+          $this->_makeReferences($z);
+          // Merge with the big array we're returning
+          // The big array being all the data of the children of our parent node
+          $return = $this->_array_kmerge($return,$z->data);
+        }
+      }
+      return $return;
+    }
+  
+    /**
+     * Turns a node's data and its children's data into a PHP array
+     *
+     * @access private
+     * @param array $node The node which you want to arrayize
+     * @return boolean
+     */
+    function _nodeArrayizeData(&$node) {
+      if (is_array($node->data) && $node->children == true) {
+        // This node has children, so we need to find them
+        $childs = $this->_gatherChildren($node->id);
+        // We've gathered all our children's data and are ready to use it
+        $key = key($node->data);
+        $key = empty($key) ? 0 : $key;
+        // If it's an array, add to it of course
+        if (is_array($node->data[$key])) {
+          $node->data[$key] = $this->_array_kmerge($node->data[$key],$childs);
+        } else {
+          $node->data[$key] = $childs;
+        }
+      } elseif (!is_array($node->data) && $node->children == true) {
+        // Same as above, find the children of this node
+        $childs       = $this->_gatherChildren($node->id);
+        $node->data   = array();
+        $node->data[] = $childs;
+      }
+
+      // We edited $node by reference, so just return true
+      return true;
+    }
+
+    /**
+     * Traverses node-space and copies references to / from this object.
+     * @access private
+     * @param object $z A node whose references we wish to make real
+     * @return bool
+     */
+    function _makeReferences(&$z) {
+      // It is a reference
+      if (isset($z->ref)) {
+        $key                = key($z->data);
+        // Copy the data to this object for easy retrieval later
+        $this->ref[$z->ref] =& $z->data[$key];
+      // It has a reference
+      } elseif (isset($z->refKey)) {
+        if (isset($this->ref[$z->refKey])) {
+          $key           = key($z->data);
+          // Copy the data from this object to make the node a real reference
+          $z->data[$key] =& $this->ref[$z->refKey];
+        }
+      }
+      return true;
+    }
+  
+
+    /**
+     * Merges arrays and maintains numeric keys.
+     *
+     * An ever-so-slightly modified version of the array_kmerge() function posted
+     * to php.net by mail at nospam dot iaindooley dot com on 2004-04-08.
+     *
+     * http://us3.php.net/manual/en/function.array-merge.php#41394
+     *
+     * @access private
+     * @param array $arr1
+     * @param array $arr2
+     * @return array
+     */
+    function _array_kmerge($arr1,$arr2) { 
+      if(!is_array($arr1)) 
+        $arr1 = array(); 
+
+      if(!is_array($arr2))
+        $arr2 = array(); 
+    
+      $keys1 = array_keys($arr1); 
+      $keys2 = array_keys($arr2); 
+      $keys  = array_merge($keys1,$keys2); 
+      $vals1 = array_values($arr1); 
+      $vals2 = array_values($arr2); 
+      $vals  = array_merge($vals1,$vals2); 
+      $ret   = array(); 
+
+      foreach($keys as $key) { 
+        list($unused,$val) = each($vals);
+        // This is the good part!  If a key already exists, but it's part of a
+        // sequence (an int), just keep addin numbers until we find a fresh one.
+        if (isset($ret[$key]) and is_int($key)) {
+          while (array_key_exists($key, $ret)) {
+            $key++;
+          }
+        }  
+        $ret[$key] = $val; 
+      } 
+
+      return $ret; 
+    }
+  }
+?>
\ No newline at end of file