+<?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
+ * @version CVS: $Id: XMLParser.php 313023 2011-07-06 19:17:11Z dufuz $
+ * @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: 1.9.4
+ * @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';
+ }
+
+ if (version_compare(phpversion(), '5.0.0', 'lt') && $this->encoding == 'UTF-8') {
+ $data = utf8_decode($data);
+ $this->encoding = 'ISO-8859-1';
+ }
+
+ $xp = xml_parser_create($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;
+ }
+}
\ No newline at end of file
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