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<?php |
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/** |
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* SCSSPHP |
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* |
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* @copyright 2012-2020 Leaf Corcoran |
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* |
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* @license http://opensource.org/licenses/MIT MIT |
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* |
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* @link http://scssphp.github.io/scssphp |
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*/ |
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namespace ScssPhp\ScssPhp; |
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use ScssPhp\ScssPhp\Base\Range; |
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use ScssPhp\ScssPhp\Exception\RangeException; |
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/** |
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* Utilty functions |
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* |
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* @author Anthon Pang <[email protected]> |
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*/ |
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class Util |
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{ |
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/** |
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* Asserts that `value` falls within `range` (inclusive), leaving |
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* room for slight floating-point errors. |
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* |
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* @param string $name The name of the value. Used in the error message. |
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* @param \ScssPhp\ScssPhp\Base\Range $range Range of values. |
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* @param array $value The value to check. |
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* @param string $unit The unit of the value. Used in error reporting. |
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* |
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* @return mixed `value` adjusted to fall within range, if it was outside by a floating-point margin. |
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* |
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* @throws \ScssPhp\ScssPhp\Exception\RangeException |
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*/ |
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public static function checkRange($name, Range $range, $value, $unit = '') |
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{ |
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$val = $value[1]; |
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$grace = new Range(-0.00001, 0.00001); |
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if (! \is_numeric($val)) { |
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throw new RangeException("$name {$val} is not a number."); |
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} |
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if ($range->includes($val)) { |
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return $val; |
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} |
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if ($grace->includes($val - $range->first)) { |
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return $range->first; |
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} |
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if ($grace->includes($val - $range->last)) { |
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return $range->last; |
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} |
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throw new RangeException("$name {$val} must be between {$range->first} and {$range->last}$unit"); |
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} |
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/** |
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* Encode URI component |
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* |
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* @param string $string |
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* |
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* @return string |
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*/ |
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public static function encodeURIComponent($string) |
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{ |
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$revert = ['%21' => '!', '%2A' => '*', '%27' => "'", '%28' => '(', '%29' => ')']; |
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return strtr(rawurlencode($string), $revert); |
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} |
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/** |
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* mb_chr() wrapper |
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* |
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* @param integer $code |
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* |
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* @return string |
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*/ |
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public static function mbChr($code) |
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{ |
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// Use the native implementation if available. |
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if (\function_exists('mb_chr')) { |
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return mb_chr($code, 'UTF-8'); |
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} |
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if (0x80 > $code %= 0x200000) { |
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$s = \chr($code); |
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} elseif (0x800 > $code) { |
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$s = \chr(0xC0 | $code >> 6) . \chr(0x80 | $code & 0x3F); |
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} elseif (0x10000 > $code) { |
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$s = \chr(0xE0 | $code >> 12) . \chr(0x80 | $code >> 6 & 0x3F) . \chr(0x80 | $code & 0x3F); |
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} else { |
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$s = \chr(0xF0 | $code >> 18) . \chr(0x80 | $code >> 12 & 0x3F) |
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. \chr(0x80 | $code >> 6 & 0x3F) . \chr(0x80 | $code & 0x3F); |
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} |
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return $s; |
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} |
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} |
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