XMLNode.inc.php

<?php
 
class XMLNode {
 
   var $name;
 
   var $parent;
 
   var $attributes;
 
   var $value;
 
   var $children;
 
   function __construct($name = null) {
      $this->name = $name;
      $this->parent = null;
      $this->attributes = array();
      $this->value = null;
      $this->children = array();
   }
 
   function getName($includeNamespace = true) {
      if (
         $includeNamespace ||
         ($i = strpos($this->name, ':')) === false
      ) return $this->name;
      return substr($this->name, $i+1);
   }
 
   function setName($name) {
      $this->name = $name;
   }
 
   function &getParent() {
      return $this->parent;
   }
 
   function setParent(&$parent) {
      $this->parent =& $parent;
   }
 
   function getAttributes() {
      return $this->attributes;
   }
 
   function getAttribute($name) {
      return isset($this->attributes[$name]) ? $this->attributes[$name] : null;
   }
 
   function setAttribute($name, $value) {
      $this->attributes[$name] = $value;
   }
 
   function setAttributes($attributes) {
      $this->attributes = $attributes;
   }
 
   function &getValue() {
      return $this->value;
   }
 
   function setValue($value) {
      $this->value =& $value;
   }
 
   function &getChildren() {
      return $this->children;
   }
 
   function &getChildByName($name, $index = 0) {
      if (!is_array($name)) $name = array($name);
      foreach ($this->children as $key => $junk) {
         $child =& $this->children[$key];
         if (in_array($child->getName(), $name)) {
            if ($index == 0) {
               return $child;
            } else {
               $index--;
            }
         }
         unset($child);
      }
      $child = null;
      return $child;
   }
 
   function &getChildValue($name, $index = 0) {
      $node =& $this->getChildByName($name);
      if ($node) {
         $returner =& $node->getValue();
      } else {
         $returner = null;
      }
      return $returner;
   }
 
   function addChild(&$node) {
      $this->children[] =& $node;
   }
 
   function &toXml($output = null) {
      $nullVar = null;
      $out = '';
 
      if ($this->parent === null) {
         // This is the root node. Output information about the document.
         $out .= "<?xml version=\"" . $this->getAttribute('version') . "\" encoding=\"UTF-8\"?>\n";
         if ($this->getAttribute('type') != '') {
            if ($this->getAttribute('url') != '') {
               $out .= "<!DOCTYPE " . $this->getAttribute('type') . " PUBLIC \"" . $this->getAttribute('dtd') . "\" \"" . $this->getAttribute('url') . "\">";
            } else {
               $out .= "<!DOCTYPE " . $this->getAttribute('type') . " SYSTEM \"" . $this->getAttribute('dtd') . "\">";
            }
         }
      }
 
      if ($this->name !== null) {
         $out .= '<' . $this->name;
         foreach ($this->attributes as $name => $value) {
            $value = XMLNode::xmlentities($value);
            $out .= " $name=\"$value\"";
         }
         if ($this->name !== '!--') {
            $out .= '>';
         }
      }
      $out .= XMLNode::xmlentities($this->value, ENT_NOQUOTES);
      foreach ($this->children as $child) {
         if ($output !== null) {
            if ($output === true) echo $out;
            else fwrite ($output, $out);
            $out = '';
         }
         $out .= $child->toXml($output);
      }
      if ($this->name === '!--') {
         $out .= '-->';
      } else if ($this->name !== null) {
         $out .= '</' . $this->name . '>';
      }
      if ($output !== null) {
         if ($output === true) echo $out;
         else fwrite ($output, $out);
         return $nullVar;
      }
      return $out;
   }
 
   static function xmlentities($string, $quote_style=ENT_QUOTES) {
      return htmlspecialchars($string, $quote_style, 'UTF-8');
   }
 
   function destroy() {
      unset($this->value, $this->attributes, $this->parent, $this->name);
      foreach ($this->children as $child) {
         $child->destroy();
      }
      unset($this->children);
   }
}