Utils.php

<?php
namespace GuzzleHttp;
 
use GuzzleHttp\Exception\InvalidArgumentException;
use Psr\Http\Message\UriInterface;
use Symfony\Polyfill\Intl\Idn\Idn;
 
final class Utils
{
    public static function currentTime()
    {
        return function_exists('hrtime') ? hrtime(true) / 1e9 : microtime(true);
    }
 
    public static function idnUriConvert(UriInterface $uri, $options = 0)
    {
        if ($uri->getHost()) {
            $asciiHost = self::idnToAsci($uri->getHost(), $options, $info);
            if ($asciiHost === false) {
                $errorBitSet = isset($info['errors']) ? $info['errors'] : 0;
 
                $errorConstants = array_filter(array_keys(get_defined_constants()), function ($name) {
                    return substr($name, 0, 11) === 'IDNA_ERROR_';
                });
 
                $errors = [];
                foreach ($errorConstants as $errorConstant) {
                    if ($errorBitSet & constant($errorConstant)) {
                        $errors[] = $errorConstant;
                    }
                }
 
                $errorMessage = 'IDN conversion failed';
                if ($errors) {
                    $errorMessage .= ' (errors: ' . implode(', ', $errors) . ')';
                }
 
                throw new InvalidArgumentException($errorMessage);
            } else {
                if ($uri->getHost() !== $asciiHost) {
                    // Replace URI only if the ASCII version is different
                    $uri = $uri->withHost($asciiHost);
                }
            }
        }
 
        return $uri;
    }
 
    private static function idnToAsci($domain, $options, &$info = [])
    {
        if (\preg_match('%^[ -~]+$%', $domain) === 1) {
            return $domain;
        }
 
        if (\extension_loaded('intl') && defined('INTL_IDNA_VARIANT_UTS46')) {
            return \idn_to_ascii($domain, $options, INTL_IDNA_VARIANT_UTS46, $info);
        }
 
        /*
         * The Idn class is marked as @internal. We've locked the version to
         * symfony/polyfill-intl-idn to avoid issues in the future.
         */
        return Idn::idn_to_ascii($domain, $options, Idn::INTL_IDNA_VARIANT_UTS46, $info);
    }
}