Subversion-Projekte lars-tiefland.ci

<?php
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2014 - 2018, British Columbia Institute of Technology
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @package     CodeIgniter
 * @author      EllisLab Dev Team
 * @copyright   Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
 * @copyright   Copyright (c) 2014 - 2018, British Columbia Institute of Technology (http://bcit.ca/)
 * @license     http://opensource.org/licenses/MIT      MIT License
 * @link        https://codeigniter.com
 * @since       Version 3.0.0
 * @filesource
 */
defined('BASEPATH') OR exit('No direct script access allowed');

/**
 * PHP ext/mbstring compatibility package
 *
 * @package             CodeIgniter
 * @subpackage  CodeIgniter
 * @category    Compatibility
 * @author              Andrey Andreev
 * @link                https://codeigniter.com/user_guide/
 * @link                http://php.net/mbstring
 */

// ------------------------------------------------------------------------

if (MB_ENABLED === TRUE)
{
        return;
}

// ------------------------------------------------------------------------

if ( ! function_exists('mb_strlen'))
{
        /**
         * mb_strlen()
         *
         * WARNING: This function WILL fall-back to strlen()
         * if iconv is not available!
         *
         * @link        http://php.net/mb_strlen
         * @param       string  $str
         * @param       string  $encoding
         * @return      int
         */
        function mb_strlen($str, $encoding = NULL)
        {
                if (ICONV_ENABLED === TRUE)
                {
                        return iconv_strlen($str, isset($encoding) ? $encoding : config_item('charset'));
                }

                log_message('debug', 'Compatibility (mbstring): iconv_strlen() is not available, falling back to strlen().');
                return strlen($str);
        }
}

// ------------------------------------------------------------------------

if ( ! function_exists('mb_strpos'))
{
        /**
         * mb_strpos()
         *
         * WARNING: This function WILL fall-back to strpos()
         * if iconv is not available!
         *
         * @link        http://php.net/mb_strpos
         * @param       string  $haystack
         * @param       string  $needle
         * @param       int     $offset
         * @param       string  $encoding
         * @return      mixed
         */
        function mb_strpos($haystack, $needle, $offset = 0, $encoding = NULL)
        {
                if (ICONV_ENABLED === TRUE)
                {
                        return iconv_strpos($haystack, $needle, $offset, isset($encoding) ? $encoding : config_item('charset'));
                }

                log_message('debug', 'Compatibility (mbstring): iconv_strpos() is not available, falling back to strpos().');
                return strpos($haystack, $needle, $offset);
        }
}

// ------------------------------------------------------------------------

if ( ! function_exists('mb_substr'))
{
        /**
         * mb_substr()
         *
         * WARNING: This function WILL fall-back to substr()
         * if iconv is not available.
         *
         * @link        http://php.net/mb_substr
         * @param       string  $str
         * @param       int     $start
         * @param       int     $length
         * @param       string  $encoding
         * @return      string
         */
        function mb_substr($str, $start, $length = NULL, $encoding = NULL)
        {
                if (ICONV_ENABLED === TRUE)
                {
                        isset($encoding) OR $encoding = config_item('charset');
                        return iconv_substr(
                                $str,
                                $start,
                                isset($length) ? $length : iconv_strlen($str, $encoding), // NULL doesn't work
                                $encoding
                        );
                }

                log_message('debug', 'Compatibility (mbstring): iconv_substr() is not available, falling back to substr().');
                return isset($length)
                        ? substr($str, $start, $length)
                        : substr($str, $start);
        }
}