Файл: system/libs/scssphp/Util.php
Строк: 206
<?php
/**
* SCSSPHP
*
* @copyright 2012-2020 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://scssphp.github.io/scssphp
*/
namespace ScssPhpScssPhp;
use ScssPhpScssPhpBaseRange;
use ScssPhpScssPhpExceptionRangeException;
/**
* Utilty functions
*
* @author Anthon Pang <anthon.pang@gmail.com>
*/
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 ScssPhpScssPhpBaseRange $range Range of values.
* @param array $value The value to check.
* @param string $unit The unit of the value. Used in error reporting.
*
* @return mixed `value` adjusted to fall within range, if it was outside by a floating-point margin.
*
* @throws ScssPhpScssPhpExceptionRangeException
*/
public static function checkRange($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($string, 'UTF-8');
}
if (function_exists('iconv_strlen')) {
return @iconv_strlen($string, 'UTF-8');
}
return strlen($string);
}
/**
* 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, $length, 'UTF-8');
}
return substr($string, $start, $length);
}
/**
* 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, $offset, 'UTF-8');
}
return strpos($haystack, $needle, $offset);
}
}