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<?
class CDavXmlDocument
{
private $root; // holds the root document for the tree
/**
* Constructor
*/
public function __construct()
{
}
private static function ExtractArrayFromXMLString($data)
{
$xmlParser = xml_parser_create_ns('UTF-8');
xml_parser_set_option($xmlParser, XML_OPTION_SKIP_WHITE, 1);
xml_parser_set_option($xmlParser, XML_OPTION_CASE_FOLDING, 0);
$xmlTags = array();
$rc = xml_parse_into_struct($xmlParser, $data, $xmlTags);
if ($rc == false)
throw new CDavXMLParsingException(xml_error_string(xml_get_error_code($xmlParser)), xml_get_current_line_number($xmlParser), xml_get_current_column_number($xmlParser));
xml_parser_free($xmlParser);
if (count($xmlTags) == 0)
$xmlTags = null;
return $xmlTags;
}
public static function LoadFromString($data)
{
$result = new CDavXmlDocument();
if (strlen($data) > 0)
{
$startFrom = 0;
$arData = self::ExtractArrayFromXMLString($data);
$arContent = self::LoadFromStringRecursive($result, $arData, $startFrom);
$result->root = $arContent;
}
return $result;
}
private static function LoadFromStringRecursive(&$xmlDocument, $arData, &$startFrom)
{
$result = array();
while (isset($arData[$startFrom]))
{
$tagdata = $arData[$startFrom++];
if (!isset($tagdata) || !isset($tagdata['tag']) || !isset($tagdata['type']))
break;
if ($tagdata['type'] == "close")
break;
$attributes = (isset($tagdata['attributes']) ? $tagdata['attributes'] : false);
if ($tagdata['type'] == "open")
{
$subtree = self::LoadFromStringRecursive($xmlDocument, $arData, $startFrom);
$result[] = $xmlDocument->CreateNewNode($tagdata['tag'], $subtree, $attributes);
}
elseif ($tagdata['type'] == "complete")
{
$value = (isset($tagdata['value']) ? $tagdata['value'] : false);
$result[] = $xmlDocument->CreateNewNode($tagdata['tag'], $value, $attributes);
}
}
if (count($result) == 1 )
return $result[0];
return $result;
}
/**
* @param string $tagname The tag name of the new element, possibly namespaced
* @param mixed $content Either a string of content, or an array of sub-elements
* @param array $attributes An array of attribute name/value pairs
* @param array $xmlns An XML namespace specifier
*/
public function CreateNewNode($tagname, $content = false, $attributes = false, $xmlns = null)
{
if ($xmlns == null && preg_match('/^(.*):([^:]+)$/', $tagname, $matches))
{
$xmlns = $matches[1];
$tagname = $matches[2];
}
else
{
$tagname = $tagname;
}
return new CDavXmlNode($tagname, $content, $attributes, $xmlns);
}
/**
* Return an array of elements matching the specified path
*
* @return array The CDavXmlNode within the tree which match this tag
*/
public function GetPath($path)
{
if (!$this->root)
return array();
return $this->root->GetPath($path);
}
public function GetRoot()
{
return $this->root;
}
}
class CDavXMLParsingException
extends Exception
{
private $xmlMessage = "";
private $xmlLine = 0;
private $xmlColumn = 0;
public function __construct($xmlMessage = "", $xmlLine = 0, $xmlColumn = 0, $messageTemplate = "")
{
$this->xmlMessage = $xmlMessage;
$this->xmlLine = $xmlLine;
$this->xmlColumn = $xmlColumn;
if (strlen($messageTemplate) <= 0)
$messageTemplate = 'XML parsing error: #MESSAGE# at line #LINE#, column #COLUMN#';
$message = str_replace(array("#MESSAGE#", "#LINE#", "#COLUMN#"), array(htmlspecialcharsbx($this->xmlMessage), $this->xmlLine, $this->xmlColumn), $messageTemplate);
parent::__construct($message, 10010);
}
}
?>