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