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<?php |
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/* |
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* This is part of the webuni/front-matter package. |
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* |
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* (c) Martin Hasoň <[email protected]> |
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* (c) Webuni s.r.o. <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Webuni\FrontMatter; |
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use Webuni\FrontMatter\Processor\JsonWithoutBracesProcessor; |
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use Webuni\FrontMatter\Processor\ProcessorInterface; |
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use Webuni\FrontMatter\Processor\TomlProcessor; |
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use Webuni\FrontMatter\Processor\YamlProcessor; |
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final class FrontMatter implements FrontMatterInterface, FrontMatterExistsInterface |
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{ |
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/** @var string */ |
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private $startSep; |
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/** @var string */ |
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private $endSep; |
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/** @var ProcessorInterface */ |
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private $processor; |
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/** @var string */ |
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private $regexp; |
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public static function createYaml(): self |
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{ |
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return new self(new YamlProcessor(), '---', '---'); |
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} |
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public static function createToml(): self |
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{ |
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return new self(new TomlProcessor(), '+++', '+++'); |
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} |
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public static function createJson(): self |
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{ |
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return new self(new JsonWithoutBracesProcessor(), '{', '}'); |
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} |
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public function __construct(ProcessorInterface $processor = null, string $startSep = '---', string $endSep = '---') |
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{ |
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$this->startSep = $startSep; |
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$this->endSep = $endSep; |
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$this->processor = $processor ?: new YamlProcessor(); |
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$this->regexp = '{^(?:'.preg_quote($startSep).")[\r\n|\n]*(.*?)[\r\n|\n]+(?:".preg_quote($endSep).")[\r\n|\n]*(.*)$}s"; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function parse(string $source): Document |
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{ |
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if (preg_match($this->regexp, $source, $matches) === 1) { |
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$data = '' !== trim($matches[1]) ? $this->processor->parse(trim($matches[1])) : []; |
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return new Document($matches[2], $data); |
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} |
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return new Document($source); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function dump(Document $document): string |
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{ |
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$data = trim($this->processor->dump($document->getData())); |
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if ('' === $data) { |
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return $document->getContent(); |
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} |
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return sprintf("%s\n%s\n%s\n%s", $this->startSep, $data, $this->endSep, $document->getContent()); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function exists(string $source): bool |
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{ |
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return preg_match($this->regexp, $source) === 1; |
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} |
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} |
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webuni /
front-matter
