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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
<?php
/**
* SCSSPHP
*
* @copyright 2012-2020 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://scssphp.github.io/scssphp
*/
namespace ScssPhp\ScssPhp;
use ScssPhp\ScssPhp\Base\Range;
use ScssPhp\ScssPhp\Exception\RangeException;
use ScssPhp\ScssPhp\Node\Number;
/**
* Utility functions
*
* @author Anthon Pang <anthon.pang@gmail.com>
*
* @internal
*/
class Util
{
/**
* Asserts that `value` falls within `range` (inclusive), leaving
* room for slight floating-point errors.
*
* @param string $name The name of the value. Used in the error message.
* @param Range $range Range of values.
* @param array|Number $value The value to check.
* @param string $unit The unit of the value. Used in error reporting.
*
* @return mixed `value` adjusted to fall within range, if it was outside by a floating-point margin.
*
* @throws \ScssPhp\ScssPhp\Exception\RangeException
*/
public static function checkRange($name, Range $range, $value, $unit = '')
{
$val = $value[1];
$grace = new Range(-0.00001, 0.00001);
if (! \is_numeric($val)) {
throw new RangeException("$name {$val} is not a number.");
}
if ($range->includes($val)) {
return $val;
}
if ($grace->includes($val - $range->first)) {
return $range->first;
}
if ($grace->includes($val - $range->last)) {
return $range->last;
}
throw new RangeException("$name {$val} must be between {$range->first} and {$range->last}$unit");
}
/**
* Encode URI component
*
* @param string $string
*
* @return string
*/
public static function encodeURIComponent($string)
{
$revert = ['%21' => '!', '%2A' => '*', '%27' => "'", '%28' => '(', '%29' => ')'];
return strtr(rawurlencode($string), $revert);
}
/**
* mb_chr() wrapper
*
* @param integer $code
*
* @return string
*/
public static function mbChr($code)
{
// Use the native implementation if available, but not on PHP 7.2 as mb_chr(0) is buggy there
if (\PHP_VERSION_ID > 70300 && \function_exists('mb_chr')) {
return mb_chr($code, 'UTF-8');
}
if (0x80 > $code %= 0x200000) {
$s = \chr($code);
} elseif (0x800 > $code) {
$s = \chr(0xC0 | $code >> 6) . \chr(0x80 | $code & 0x3F);
} elseif (0x10000 > $code) {
$s = \chr(0xE0 | $code >> 12) . \chr(0x80 | $code >> 6 & 0x3F) . \chr(0x80 | $code & 0x3F);
} else {
$s = \chr(0xF0 | $code >> 18) . \chr(0x80 | $code >> 12 & 0x3F)
. \chr(0x80 | $code >> 6 & 0x3F) . \chr(0x80 | $code & 0x3F);
}
return $s;
}
/**
* mb_strlen() wrapper
*
* @param string $string
* @return int
*/
public static function mbStrlen($string)
{
// Use the native implementation if available.
if (\function_exists('mb_strlen')) {
return mb_strlen($string, 'UTF-8');
}
if (\function_exists('iconv_strlen')) {
return (int) @iconv_strlen($string, 'UTF-8');
}
throw new \LogicException('Either mbstring (recommended) or iconv is necessary to use Scssphp.');
}
/**
* mb_substr() wrapper
* @param string $string
* @param int $start
* @param null|int $length
* @return string
*/
public static function mbSubstr($string, $start, $length = null)
{
// Use the native implementation if available.
if (\function_exists('mb_substr')) {
return mb_substr($string, $start, $length, 'UTF-8');
}
if (\function_exists('iconv_substr')) {
if ($start < 0) {
$start = static::mbStrlen($string) + $start;
if ($start < 0) {
$start = 0;
}
}
if (null === $length) {
$length = 2147483647;
} elseif ($length < 0) {
$length = static::mbStrlen($string) + $length - $start;
if ($length < 0) {
return '';
}
}
return (string)iconv_substr($string, $start, $length, 'UTF-8');
}
throw new \LogicException('Either mbstring (recommended) or iconv is necessary to use Scssphp.');
}
/**
* mb_strpos wrapper
* @param string $haystack
* @param string $needle
* @param int $offset
*
* @return int|false
*/
public static function mbStrpos($haystack, $needle, $offset = 0)
{
if (\function_exists('mb_strpos')) {
return mb_strpos($haystack, $needle, $offset, 'UTF-8');
}
if (\function_exists('iconv_strpos')) {
return iconv_strpos($haystack, $needle, $offset, 'UTF-8');
}
throw new \LogicException('Either mbstring (recommended) or iconv is necessary to use Scssphp.');
}
}
|
