*/ public const CHARACTERS = [self::SPACE => ' ', self::TAB => "\t"]; /** * @var string */ private const SPACE = 'space'; /** * @var string */ private const TAB = 'tab'; /** * @see https://regex101.com/r/A2XiaF/1 * @var string */ private const VALID_INDENT_REGEX = '#^( *|\\t+)$#'; /** * @var int */ private const MINIMUM_SIZE = 1; /** * @see https://regex101.com/r/3HFEjX/1 * @var string */ private const PARSE_INDENT_REGEX = '/^(?P( +|\\t+)).*/m'; /** * @var string */ private $string; private function __construct(string $string) { $this->string = $string; } public function __toString() : string { return $this->string; } /** * @return $this * @param string $content */ public static function fromString($content) { $match = \RectorPrefix20210808\Nette\Utils\Strings::match($content, self::VALID_INDENT_REGEX); if ($match === null) { throw \Rector\FileFormatter\Exception\InvalidIndentStringException::fromString($content); } return new self($content); } /** * @return $this * @param int $size */ public static function createSpaceWithSize($size) { return self::fromSizeAndStyle($size, self::SPACE); } /** * @return $this */ public static function createTab() { return self::fromSizeAndStyle(1, self::TAB); } /** * @return $this * @param int $size * @param string $style */ public static function fromSizeAndStyle($size, $style) { if ($size < self::MINIMUM_SIZE) { throw \Rector\FileFormatter\Exception\InvalidIndentSizeException::fromSizeAndMinimumSize($size, self::MINIMUM_SIZE); } if (!\array_key_exists($style, self::CHARACTERS)) { throw \Rector\FileFormatter\Exception\InvalidIndentStyleException::fromStyleAndAllowedStyles($style, \array_keys(self::CHARACTERS)); } $value = \str_repeat(self::CHARACTERS[$style], $size); return new self($value); } /** * @return $this * @param string $content */ public static function fromContent($content) { $match = \RectorPrefix20210808\Nette\Utils\Strings::match($content, self::PARSE_INDENT_REGEX); if (isset($match['indent'])) { return self::fromString($match['indent']); } throw \Rector\FileFormatter\Exception\ParseIndentException::fromString($content); } public function getIndentSize() : int { return \strlen($this->string); } public function getIndentStyle() : string { return $this->startsWithSpace() ? self::SPACE : self::TAB; } public function getIndentStyleCharacter() : string { return $this->startsWithSpace() ? self::CHARACTERS[self::SPACE] : self::CHARACTERS[self::TAB]; } private function startsWithSpace() : bool { return \strncmp($this->string, ' ', \strlen(' ')) === 0; } }