<?php

/*

* $Author ：PHPYUN开发团队

*

* 官网: http://www.phpyun.com

*

* 版权所有 2009-2019 宿迁鑫潮信息技术有限公司，并保留所有权利。

*

* 软件声明：未经授权前提下，不得用于商业运营、二次开发以及任何形式的再次发布。

 */

/*

	[UCenter] (C)2001-2099 Comsenz Inc.

	This is NOT a freeware, use is subject to license terms



	$Id: xml.class.php 1059 2011-03-01 07:25:09Z monkey $

*/



function xml_unserialize(&$xml, $isnormal = FALSE) {

	$xml_parser = new XML($isnormal);

	$data = $xml_parser->parse($xml);

	$xml_parser->destruct();

	return $data;

}



function xml_serialize($arr, $htmlon = FALSE, $isnormal = FALSE, $level = 1) {

	$s = $level == 1 ? "<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\r\n<root>\r\n" : '';

	$space = str_repeat("\t", $level);

	foreach($arr as $k => $v) {

		if(!is_array($v)) {

			$s .= $space."<item id=\"$k\">".($htmlon ? '<![CDATA[' : '').$v.($htmlon ? ']]>' : '')."</item>\r\n";

		} else {

			$s .= $space."<item id=\"$k\">\r\n".xml_serialize($v, $htmlon, $isnormal, $level + 1).$space."</item>\r\n";

		}

	}

	$s = preg_replace("/([\x01-\x08\x0b-\x0c\x0e-\x1f])+/", ' ', $s);

	return $level == 1 ? $s."</root>" : $s;

}



class XML {



	var $parser;

	var $document;

	var $stack;

	var $data;

	var $last_opened_tag;

	var $isnormal;

	var $attrs = array();

	var $failed = FALSE;



	function __construct($isnormal) {

		$this->XML($isnormal);

	}



	function XML($isnormal) {

		$this->isnormal = $isnormal;

		$this->parser = xml_parser_create('ISO-8859-1');

		xml_parser_set_option($this->parser, XML_OPTION_CASE_FOLDING, false);

		xml_set_object($this->parser, $this);

		xml_set_element_handler($this->parser, 'open','close');

		xml_set_character_data_handler($this->parser, 'data');

	}



	function destruct() {

		xml_parser_free($this->parser);

	}



	function parse(&$data) {

		$this->document = array();

		$this->stack	= array();

		return xml_parse($this->parser, $data, true) && !$this->failed ? $this->document : '';

	}



	function open(&$parser, $tag, $attributes) {

		$this->data = '';

		$this->failed = FALSE;

		if(!$this->isnormal) {

			if(isset($attributes['id']) && !is_string($this->document[$attributes['id']])) {

				$this->document  = &$this->document[$attributes['id']];

			} else {

				$this->failed = TRUE;

			}

		} else {

			if(!isset($this->document[$tag]) || !is_string($this->document[$tag])) {

				$this->document  = &$this->document[$tag];

			} else {

				$this->failed = TRUE;

			}

		}

		$this->stack[] = &$this->document;

		$this->last_opened_tag = $tag;

		$this->attrs = $attributes;

	}



	function data(&$parser, $data) {

		if($this->last_opened_tag != NULL) {

			$this->data .= $data;

		}

	}



	function close(&$parser, $tag) {

		if($this->last_opened_tag == $tag) {

			$this->document = $this->data;

			$this->last_opened_tag = NULL;

		}

		array_pop($this->stack);

		if($this->stack) {

			$this->document = &$this->stack[count($this->stack)-1];

		}

	}



}



?>