56 lines
1.8 KiB
PHP
Executable file
56 lines
1.8 KiB
PHP
Executable file
<?php
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/**
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* League.Uri (https://uri.thephpleague.com)
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*
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* (c) Ignace Nyamagana Butera <nyamsprod@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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declare(strict_types=1);
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namespace League\Uri;
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use finfo;
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use League\Uri\Exceptions\MissingFeature;
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use League\Uri\IPv4\Calculator;
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use const PHP_INT_SIZE;
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/**
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* Allow detecting features needed to make the packages work.
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*/
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final class FeatureDetection
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{
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public static function supportsFileDetection(): void
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{
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static $isSupported = null;
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$isSupported = $isSupported ?? class_exists(finfo::class);
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if (!$isSupported) {
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throw new MissingFeature('Support for file type detection requires the `fileinfo` extension.');
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}
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}
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public static function supportsIdn(): void
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{
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static $isSupported = null;
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$isSupported = $isSupported ?? (function_exists('\idn_to_ascii') && defined('\INTL_IDNA_VARIANT_UTS46'));
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if (!$isSupported) {
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throw new MissingFeature('Support for IDN host requires the `intl` extension for best performance or run "composer require symfony/polyfill-intl-idn" to install a polyfill.');
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}
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}
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public static function supportsIPv4Conversion(): void
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{
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static $isSupported = null;
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$isSupported = $isSupported ?? (extension_loaded('gmp') || extension_loaded('bcmath') || (4 < PHP_INT_SIZE));
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if (!$isSupported) {
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throw new MissingFeature('A '.Calculator::class.' implementation could not be automatically loaded. To perform IPv4 conversion use a x.64 PHP build or install one of the following extension GMP or BCMath. You can also ship your own implmentation.');
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}
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}
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}
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