Method TryFromFile

php/src/vaas/Sha256.php:21–38

* Gets Sha256 from file * @param string $path the path of the file to hash * @return Future that resolves as the sha256 object * @throws FileDoesNotExistException if the file does not exist * @throws InvalidSha256Exception if the hash is invalid */

(string $path)

     * @throws InvalidSha256Exception if the hash is invalid
     */
    public static function TryFromFile(string $path): Future
    {
        return async(function () use ($path) {
            if (!file_exists($path)) {
                throw new FileDoesNotExistException();
            }

            $hashString = hash_file("sha256", $path);

            if (Sha256::IsValid($hashString)->await()) {
                $sha256 = new Sha256();
                $sha256->_hash = $hashString;
                return $sha256;
            }

            throw new InvalidSha256Exception();
        });
    }

    /**
     * Gets Sha256 from string