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<?php
/**
* PEAR_XMLParser
*
* PHP versions 4 and 5
*
* @category pear
* @package PEAR
* @author Greg Beaver <cellog@php.net>
* @author Stephan Schmidt (original XML_Unserializer code)
* @copyright 1997-2009 The Authors
* @license http://opensource.org/licenses/bsd-license New BSD License
* @link http://pear.php.net/package/PEAR
* @since File available since Release 1.4.0a1
*/
/**
* Parser for any xml file
* @category pear
* @package PEAR
* @author Greg Beaver <cellog@php.net>
* @author Stephan Schmidt (original XML_Unserializer code)
* @copyright 1997-2009 The Authors
* @license http://opensource.org/licenses/bsd-license New BSD License
* @version Release: 1.10.16
* @link http://pear.php.net/package/PEAR
* @since Class available since Release 1.4.0a1
*/
class PEAR_XMLParser
{
/**
* unserilialized data
* @var string $_serializedData
*/
var $_unserializedData = null;
/**
* name of the root tag
* @var string $_root
*/
var $_root = null;
/**
* stack for all data that is found
* @var array $_dataStack
*/
var $_dataStack = array();
/**
* stack for all values that are generated
* @var array $_valStack
*/
var $_valStack = array();
/**
* current tag depth
* @var int $_depth
*/
var $_depth = 0;
/**
* The XML encoding to use
* @var string $encoding
*/
var $encoding = 'ISO-8859-1';
/**
* @return array
*/
function getData()
{
return $this->_unserializedData;
}
/**
* @param string xml content
* @return true|PEAR_Error
*/
function parse($data)
{
if (!extension_loaded('xml')) {
include_once 'PEAR.php';
return PEAR::raiseError("XML Extension not found", 1);
}
$this->_dataStack = $this->_valStack = array();
$this->_depth = 0;
if (
strpos($data, 'encoding="UTF-8"')
|| strpos($data, 'encoding="utf-8"')
|| strpos($data, "encoding='UTF-8'")
|| strpos($data, "encoding='utf-8'")
) {
$this->encoding = 'UTF-8';
}
$xp = xml_parser_create($this->encoding);
xml_parser_set_option($xp, XML_OPTION_CASE_FOLDING, 0);
xml_set_object($xp, $this);
xml_set_element_handler($xp, 'startHandler', 'endHandler');
xml_set_character_data_handler($xp, 'cdataHandler');
if (!xml_parse($xp, $data)) {
$msg = xml_error_string(xml_get_error_code($xp));
$line = xml_get_current_line_number($xp);
xml_parser_free($xp);
include_once 'PEAR.php';
return PEAR::raiseError("XML Error: '$msg' on line '$line'", 2);
}
xml_parser_free($xp);
return true;
}
/**
* Start element handler for XML parser
*
* @access private
* @param object $parser XML parser object
* @param string $element XML element
* @param array $attribs attributes of XML tag
* @return void
*/
function startHandler($parser, $element, $attribs)
{
$this->_depth++;
$this->_dataStack[$this->_depth] = null;
$val = array(
'name' => $element,
'value' => null,
'type' => 'string',
'childrenKeys' => array(),
'aggregKeys' => array()
);
if (count($attribs) > 0) {
$val['children'] = array();
$val['type'] = 'array';
$val['children']['attribs'] = $attribs;
}
array_push($this->_valStack, $val);
}
/**
* post-process data
*
* @param string $data
* @param string $element element name
*/
function postProcess($data, $element)
{
return trim($data);
}
/**
* End element handler for XML parser
*
* @access private
* @param object XML parser object
* @param string
* @return void
*/
function endHandler($parser, $element)
{
$value = array_pop($this->_valStack);
$data = $this->postProcess($this->_dataStack[$this->_depth], $element);
// adjust type of the value
switch (strtolower($value['type'])) {
// unserialize an array
case 'array':
if ($data !== '') {
$value['children']['_content'] = $data;
}
$value['value'] = isset($value['children']) ? $value['children'] : array();
break;
/*
* unserialize a null value
*/
case 'null':
$data = null;
break;
/*
* unserialize any scalar value
*/
default:
settype($data, $value['type']);
$value['value'] = $data;
break;
}
$parent = array_pop($this->_valStack);
if ($parent === null) {
$this->_unserializedData = &$value['value'];
$this->_root = &$value['name'];
return true;
}
// parent has to be an array
if (!isset($parent['children']) || !is_array($parent['children'])) {
$parent['children'] = array();
if ($parent['type'] != 'array') {
$parent['type'] = 'array';
}
}
if (!empty($value['name'])) {
// there already has been a tag with this name
if (in_array($value['name'], $parent['childrenKeys'])) {
// no aggregate has been created for this tag
if (!in_array($value['name'], $parent['aggregKeys'])) {
if (isset($parent['children'][$value['name']])) {
$parent['children'][$value['name']] = array($parent['children'][$value['name']]);
} else {
$parent['children'][$value['name']] = array();
}
array_push($parent['aggregKeys'], $value['name']);
}
array_push($parent['children'][$value['name']], $value['value']);
} else {
$parent['children'][$value['name']] = &$value['value'];
array_push($parent['childrenKeys'], $value['name']);
}
} else {
array_push($parent['children'],$value['value']);
}
array_push($this->_valStack, $parent);
$this->_depth--;
}
/**
* Handler for character data
*
* @access private
* @param object XML parser object
* @param string CDATA
* @return void
*/
function cdataHandler($parser, $cdata)
{
$this->_dataStack[$this->_depth] .= $cdata;
}
}