<?php

> 


/**
 * SCSSPHP
 *

<  * @copyright 2012-2019 Leaf Corcoran



>  * @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;



/**

<  * Utilty functions



>  * 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 \ScssPhp\ScssPhp\Base\Range $range Range of values.
<      * @param array                     $value The value to check.



>      * @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($val)) {
        if ($range->includes($val)) {
>             throw new RangeException("$name {$val} is not a number.");
            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 int $code
>      *
>      * @return string
>      */
>     public static function mbChr($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.');