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   1  <?php
   2  
   3  namespace PhpOffice\PhpSpreadsheet\Style\NumberFormat\Wizard;
   4  
   5  use PhpOffice\PhpSpreadsheet\Exception;
   6  
   7  class Scientific extends NumberBase implements Wizard
   8  {
   9      /**
  10       * @param int $decimals number of decimal places to display, in the range 0-30
  11       * @param ?string $locale Set the locale for the scientific format; or leave as the default null.
  12       *          Locale has no effect for Scientific Format values, and is retained here for compatibility
  13       *              with the other Wizards.
  14       *          If provided, Locale values must be a valid formatted locale string (e.g. 'en-GB', 'fr', uz-Arab-AF).
  15       *
  16       * @throws Exception If a provided locale code is not a valid format
  17       */
  18      public function __construct(int $decimals = 2, ?string $locale = null)
  19      {
  20          $this->setDecimals($decimals);
  21          $this->setLocale($locale);
  22      }
  23  
  24      protected function getLocaleFormat(): string
  25      {
  26          return $this->format();
  27      }
  28  
  29      public function format(): string
  30      {
  31          return sprintf('0%sE+00', $this->decimals > 0 ? '.' . str_repeat('0', $this->decimals) : null);
  32      }
  33  }