inc.xml5compliance.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | Copyright (c) by Alexandre Alapetite,                                       |
        | http://alexandre.alapetite.net/cv/alexandre-alapetite.en.html               |
        | http://alexandre.alapetite.net/doc-alex/domxml-php4-php5/                   |
        | Modifications by Alex Killing, alex.killing@gmx.de  (search for ##)         |
        |-----------------------------------------------------------------------------|
        | Allows PHP4/DOMXML scripts to run on PHP5/DOM                               |
        |                                                                             |
        | Typical use:                                                                |
        | {                                                                           |
        |       if (version_compare(PHP_VERSION,'5','>='))                                |
        |               require_once('domxml-php4-to-php5.php');                              |
        | }                                                                           |
        |-----------------------------------------------------------------------------|
        | This code is published under Creative Commons                               |
        | Attribution-ShareAlike 2.0 "BY-SA" licence.                                 |
        | See http://creativecommons.org/licenses/by-sa/2.0/ for details.             |
        +-----------------------------------------------------------------------------+
*/

function staticxmlerror($errno, $errstr, $errfile, $errline, $errcontext, $ret = false)
{
   static $errs = array();

   if ($ret === true) {
       return $errs;
   }

   $tag = 'DOMDocument::validate(): ';
   $errs[] = str_replace($tag, '', $errstr);
}

function domxml_open_file($filename)
{
        return new php4DOMDocument($filename);
}

/*
* ##added
*/
function domxml_open_mem($str, $mode = DOMXML_LOAD_PARSING, &$error = NULL)
{
        $doc = new php4DOMDocument($str, false);
        if (!$doc->success)
        {
                $error = $doc->error;
        }
        
        return $doc;
}

function xpath_eval($xpath_context,$eval_str,$contextnode=null)
{
        return $xpath_context->query($eval_str,$contextnode);
}

function xpath_new_context($dom_document)
{
        return new php4DOMXPath($dom_document);
}

class php4DOMAttr extends php4DOMNode
{
        var $myDOMAttr;

        function php4DOMAttr($aDOMAttr)
        {
                $this->myDOMAttr=$aDOMAttr;
        }

        function Name()
        {
                return $this->myDOMAttr->name;
        }

        function Specified()
        {
                return $this->myDOMAttr->specified;
        }

        function Value()
        {
                return $this->myDOMAttr->value;
        }
}

class php4DOMCDATASection extends php4DOMNode
{
        var $myDOMCDATASection;

        function php4DOMCDATASection($aDOMCDATASection)
        {
                parent::php4DOMNode($aDOMCDATASection);                                         // #added
                $this->myDOMCDATASection=$aDOMCDATASection;
        }
}

class php4DOMDocument
{
        var $myDOMDocument;

        // ##altered
        function php4DOMDocument($source, $file = true)
        {
                $this->myDOMDocument=new DOMDocument();
                
                // temporary set error handler
                set_error_handler('staticxmlerror');
                $old = ini_set('html_errors', false);

                if (is_object($source))
                {
                        $this->myDOMDocument = $source;
                        $this->success = true;
                }
                else
                {
                        if ($file)
                        {
                                $this->success = @$this->myDOMDocument->load($source);
                        }
                        else
                        {
                                $this->success = $this->myDOMDocument->loadXML($source);
                        }
                }
                                
                // Restore error handling
                ini_set('html_errors', $old);
                restore_error_handler();
                
                if (!$this->success)
                {
                        $this->error_arr = staticxmlerror(null, null, null, null, null, true);
                        foreach($this->error_arr as $error)
                        {
                                $error = str_replace("DOMDocument::loadXML():", "", $error);
                                $this->error.= $error."<br />";
                        }
                }
        }

        // ##added
        function xpath_init()
        {
        }

        function free()
        {
                unset($this->myDOMDocument);
        }

        // ##added
        function xpath_new_context()
        {
                return xpath_new_context($this);
        }

        // ##added
        function dump_node($node)
        {
                $str = $this->myDOMDocument->saveXML($node->myDOMNode);
                return $str;
        }

        // ##added
        function validate(&$error)
        {
                $ok = $this->myDOMDocument->validate();

                if (!$ok)
                {
                        $error = array(array("0", "Unknown Error"));

                        if (function_exists("libxml_get_last_error"))
                        {
                                $err = libxml_get_last_error();
                                
                                if (is_object($err))
                                {
                                        $error = array(array($err->code, $err->message));
                                }
                        }
                }
                return $error;
        }

        function create_attribute($name,$value)
        {
                $myAttr=$this->myDOMDocument->createAttribute($name);
                $myAttr->value=$value;

                return new php4DOMAttr($myAttr);
        }

        function create_cdata_section($content)
        {
                return new php4DOMCDATASection($this->myDOMDocument->createCDATASection($content));
        }

        function create_comment($data)
        {
                return new php4DOMElement($this->myDOMDocument->createComment($data));
        }

        function create_element($name)
        {
                return new php4DOMElement($this->myDOMDocument->createElement($name));
        }

        function create_text_node($content)
        {
                return new php4DOMNode($this->myDOMDocument->createTextNode($content));
        }

        function document_element()
        {
                return new php4DOMElement($this->myDOMDocument->documentElement);
        }

        function dump_file($filename,$compressionmode=false,$format=false)
        {
                return $this->myDOMDocument->save($filename);
        }

        function dump_mem($format=false,$encoding=false)
        {
                return $this->myDOMDocument->saveXML();
        }

        function get_elements_by_tagname($name)
        {
                $myDOMNodeList=$this->myDOMDocument->getElementsByTagName($name);
                $nodeSet=array();
                $i=0;
                while ($node=$myDOMNodeList->item($i))
                {
                        $nodeSet[]=new php4DOMElement($node);
                        $i++;
                }

                return $nodeSet;
        }

        function html_dump_mem()
        {
                return $this->myDOMDocument->saveHTML();
        }
        
}

class php4DOMElement extends php4DOMNode
{
        function get_attribute($name)
        {
                return $this->myDOMNode->getAttribute($name);
        }
        
        function owner_document()
        {
                return new php4DOMDocument($this->myDOMNode->ownerDocument);
        }

        function get_elements_by_tagname($name)
        {
                $myDOMNodeList=$this->myDOMNode->getElementsByTagName($name);
                $nodeSet=array();
                $i=0;
                while ($node=$myDOMNodeList->item($i))
                {
                        $nodeSet[]=new php4DOMElement($node);
                        $i++;
                }

                return $nodeSet;
        }

        function has_attribute($name)
        {
                return $this->myDOMNode->hasAttribute($name);
        }

        function remove_attribute($name)
        {
                return $this->myDOMNode->removeAttribute($name);
        }

        function set_attribute($name,$value)
        {
                return $this->myDOMNode->setAttribute($name,$value);
        }

        function tagname()
        {
                return $this->myDOMNode->tagName;
        }

        // ##added
        function set_content($text)
        {
                // the following replace has been added to conform with PHP4.
                // A set_content("&amp;") brought a get_content() = "&" there,
                // whereas PHP5 gives a get_content() = "&amp;"
                $text = str_replace("&lt;", "<", $text);
                $text = str_replace("&gt;", ">", $text);
                $text = str_replace("&amp;", "&", $text);
                
                $text_node = new DOMText();
                $text_node->appendData($text);
                if (is_object($this->myDOMNode->firstChild))
                {
                        $this->myDOMNode->replaceChild($text_node, $this->myDOMNode->firstChild);
                }
                else
                {
                        $this->myDOMNode->appendChild($text_node);
                }
        }

        // ##added
        function get_content()
        {
                $text_node = $this->myDOMNode->firstChild;

                if (is_object($text_node))
                {
                        return $text_node->textContent;
                }
                else
                {
                        return "";
                }
        }
        
        // ## added
        function unlink($aDomNode)
        {
                parent::unlink_node($aDomNode);
        }

}

class php4DOMNode
{
        var $myDOMNode;

        function php4DOMNode($aDomNode)
        {
                $this->myDOMNode=$aDomNode;
        }

        function append_child($newnode)
        {
//echo "BH";
                //if (strtolower(get_class($newnode)) != "php4domcdatasection")
                //{
                        $doc = $this->myDOMNode->ownerDocument;
        //echo "<br>BH1:".get_class($newnode).":";
                        $newnode->myDOMNode = $doc->importNode($newnode->myDOMNode, true);
        //echo "BH2";
                        return new php4DOMElement($this->myDOMNode->appendChild($newnode->myDOMNode));
                //}
                //else
                //{
                //}
        }

        function replace_node($newnode)
        {
                return $this->set_content($newnode->myDOMNode->textContent);
        }
        
        function append_sibling($newnode)
        {
                return new php4DOMElement($this->myDOMNode->parentNode->appendChild($newnode->myDOMNode));
        }

        function attributes()
        {
//echo "<br>node:".$this->myDOMNode->nodeName.":";
                $myDOMNodeList=$this->myDOMNode->attributes;
                $nodeSet=array();
                $i=0;
                if (is_object($myDOMNodeList))
                {
                        while ($node=$myDOMNodeList->item($i))
                        {
                                $nodeSet[]=new php4DOMAttr($node);
                                $i++;
                        }
                }

                return $nodeSet;
        }

        function child_nodes()
        {
                $myDOMNodeList=$this->myDOMNode->childNodes;
                $nodeSet=array();
                $i=0;
                while ($node=$myDOMNodeList->item($i))
                {
                        $nodeSet[]=new php4DOMElement($node);
                        $i++;
                }
                return $nodeSet;
        }

        // ## added
        function children()
        {
//echo "<br>php4DomNode::children"; flush();
                return $this->child_nodes();
        }

        // ## added
        function unlink_node($aDomNode = "")
        {
                // sometimes the node to unlink is passed
                if (!is_object($aDomNode))
                {
                        $aDomNode = $this;
                        //$aDomNode = $this;
                }

                $parent = $aDomNode->myDOMNode->parentNode;
                if (is_object($parent))
                {
                        $parent->removeChild($aDomNode->myDOMNode);
                }
        }

        function clone_node($deep=false)
        {
                return new php4DOMElement($this->myDOMNode->cloneNode($deep));
        }

        function first_child()
        {
                return new php4DOMElement($this->myDOMNode->firstChild);
        }

        function get_content()
        {
                return $this->myDOMNode->textContent;
        }

        function has_attributes()
        {
                return $this->myDOMNode->hasAttributes();
        }

        function has_child_nodes()
        {
                return $this->myDOMNode->hasChildNodes();
        }

        // ## changed
        function insert_before($newnode,$refnode)
        {
                //echo "BH";
                $doc = $this->myDOMNode->ownerDocument;
                $newnode->myDOMNode = $doc->importNode($newnode->myDOMNode, true);
                
                $mydomnode = $this->myDOMNode;
                $mynewnode = $newnode->myDOMNode;
                $myrefnode = $refnode->myDOMNode;
                try
                {
                        $domel = $mydomnode->insertBefore($mynewnode,$myrefnode);
                }
                catch (DOMException $exception)
                {
                        // php 4 accepted $this == $refnode -> switch to parent of $this
                        $mydomnode = $this->myDOMNode->parentNode;
                        $domel = $mydomnode->insertBefore($mynewnode,$myrefnode);
                }
                $el = new php4DOMElement($domel);
                return $el;
        }

        // ## changed
        function last_child()
        {
                $last = $this->myDOMNode->lastChild;

                if (is_object($last))
                {
                        return new php4DOMElement($last);
                }
                else
                {
                        return false;
                }
        }

        // ## changed
        function next_sibling()
        {
                $next = $this->myDOMNode->nextSibling;

                if (is_object($next))
                {
                        return new php4DOMElement($next);
                }
                else
                {
                        return false;
                }
        }

        function node_name($a_local = false)
        {
                if ($a_local)
                {
                        return $this->myDOMNode->localName;
                }
                else
                {
                        return $this->myDOMNode->nodeName;
                }
        }

        function node_type()
        {
                return $this->myDOMNode->nodeType;
        }

        function node_value()
        {
                return $this->myDOMNode->nodeValue;
        }

        // ## changed
        function parent_node()
        {
                $parent = $this->myDOMNode->parentNode;

                if (is_object($parent))
                {
                        return new php4DOMElement($parent);
                }
                else
                {
                        return false;
                }
        }

        // ## changed
        function previous_sibling()
        {
                $prev = $this->myDOMNode->previousSibling;

                if (is_object($prev))
                {
                        return new php4DOMElement($prev);
                }
                else
                {
                        return false;
                }
        }

        function remove_child($oldchild)
        {
                return new php4DOMElement($this->myDOMNode->removeChild($oldchild->myDOMNode));
        }

        function replace_child($oldnode,$newnode)
        {
                return new php4DOMElement($this->myDOMNode->replaceChild($oldchild->myDOMNode,$newnode->myDOMNode));
        }

        function set_content($text)
        {
                $this->myDOMNode->textContent = $text;
                return $this->myDOMNode->textContent;
        }
}

class php4DOMNodelist
{
        var $myDOMNodelist;
        var $nodeset;

        function php4DOMNodelist($aDOMNodelist)
        {
                $this->myDOMNodelist=$aDOMNodelist;
                $this->nodeset=array();
                $i=0;
                while ($node=$this->myDOMNodelist->item($i))
                {
                        $this->nodeset[]=new php4DOMElement($node);
                        $i++;
                }
        }
}

class php4DOMXPath
{
        var $myDOMXPath;

        // ## added
        function xpath_eval($eval_str)
        {
                return xpath_eval($this, $eval_str);
        }

        function php4DOMXPath($dom_document)
        {
                $this->myDOMXPath=new DOMXPath($dom_document->myDOMDocument);
        }

        function query($eval_str)
        {
                return new php4DOMNodelist($this->myDOMXPath->query($eval_str));
        }

        function xpath_register_ns($prefix,$namespaceURI)
        {
                return $this->myDOMXPath->registerNamespace($prefix,$namespaceURI);
        }
}

?>