150 lines
4.3 KiB
PHP
150 lines
4.3 KiB
PHP
<?php
|
|
/**
|
|
* CodeIgniter
|
|
*
|
|
* An open source application development framework for PHP
|
|
*
|
|
* This content is released under the MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2014 - 2019, 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 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
|
|
* @license https://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);
|
|
}
|
|
}
|