<?php

if (! defined('BASEPATH')) {
    exit('No direct script access allowed.');
}

/**
 * This source file is part of the open source project
 * ExpressionEngine (https://expressionengine.com)
 *
 * @link      https://expressionengine.com/
 * @copyright Copyright (c) 2003-2022, Packet Tide, LLC (https://www.packettide.com)
 * @license   https://expressionengine.com/license Licensed under Apache License, Version 2.0
 */

/**
 * XML Helpers
 */

/**
 * Convert Reserved XML characters to Entities
 *
 * @access	public
 * @param	string
 * @return	string
 */
if (! function_exists('xml_convert')) {
    function xml_convert($str, $protect_all = false)
    {
        $temp = '__TEMP_AMPERSANDS__';

        // Replace entities to temporary markers so that
        // ampersands won't get messed up
        $str = preg_replace("/&#(\d+);/", "$temp\\1;", $str);

        if ($protect_all === true) {
            $str = preg_replace("/&(\w+);/", "$temp\\1;", $str);
        }

        $str = str_replace(
            array("&","<",">","\"", "'", "-"),
            array("&amp;", "&lt;", "&gt;", "&quot;", "&apos;", "&#45;"),
            $str
        );

        // Decode the temp markers back to entities
        $str = preg_replace("/$temp(\d+);/", "&#\\1;", $str);

        if ($protect_all === true) {
            $str = preg_replace("/$temp(\w+);/", "&\\1;", $str);
        }

        return $str;
    }
}

// EOF
