1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
<?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 (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 https://secure.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 https://secure.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 https://secure.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 https://secure.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);
}
}
|
