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   1  <?php
   2  
   3  namespace Algo26\IdnaConvert;
   4  
   5  use InvalidArgumentException;
   6  
   7  abstract class AbstractIdnaConvert
   8  {
   9      abstract public function convert(string $host): string;
  10  
  11      /**
  12       * @param string $emailAddress
  13       *
  14       * @return string
  15       */
  16      public function convertEmailAddress(string $emailAddress): string
  17      {
  18          if (strpos($emailAddress, '@') === false) {
  19              throw new InvalidArgumentException('The given string does not look like an email address', 206);
  20          }
  21  
  22          $parts = explode('@', $emailAddress);
  23  
  24          return sprintf(
  25              '%s@%s',
  26              $parts[0],
  27              $this->convert($parts[1])
  28          );
  29      }
  30  
  31      /**
  32       * @param string $url
  33       *
  34       * @return string
  35       */
  36      public function convertUrl(string $url): string
  37      {
  38          $parsed = parse_url($url);
  39          if ($parsed === false) {
  40              throw new InvalidArgumentException('The given string does not look like a URL', 206);
  41          }
  42  
  43          // Nothing to do
  44          if (!isset($parsed['host']) || $parsed['host'] === null) {
  45              return $url;
  46          }
  47          $parsed['host'] = $this->convert($parsed['host']);
  48  
  49          return http_build_url($parsed);
  50      }
  51  }