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<?php |
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namespace Kurenai; |
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use Kurenai\Contracts\ContentParser; |
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use Kurenai\Contracts\MetadataParser; |
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/** |
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* Class Parser |
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* |
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* @package \Kurenai |
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*/ |
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class Parser |
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{ |
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/** |
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* Regular expression to split content from metadata. |
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* |
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* @var string |
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*/ |
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protected $pattern = '/\s+={3,}\s+/'; |
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/** |
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* The metadata parser instance. |
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* |
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* @var \Kurenai\Contracts\MetadataParser |
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*/ |
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protected $metadataParser; |
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/** |
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* The content parser instance. |
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* |
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* @var \Kurenai\Contracts\ContentParser |
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*/ |
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protected $contentParser; |
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/** |
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* Inject the parser instances. |
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* |
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* @param \Kurenai\Contracts\MetadataParser $metadataParser |
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* @param \Kurenai\Contracts\ContentParser $contentParser |
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*/ |
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public function __construct(MetadataParser $metadataParser, ContentParser $contentParser) |
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{ |
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$this->metadataParser = $metadataParser; |
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$this->contentParser = $contentParser; |
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} |
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/** |
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* Parse a document from string or file path. |
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* |
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* @param string $path |
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* |
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* @return void |
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*/ |
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public function parse($path) |
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{ |
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$rawDocument = $this->loadDocument($path); |
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list($rawMetadata, $rawContent) = $this->splitDocument($rawDocument); |
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return $this->createDocument($rawDocument, $rawMetadata, $rawContent); |
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} |
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/** |
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* Load raw content of document. |
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* |
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* @param string $path |
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* |
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* @return string |
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*/ |
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protected function loadDocument($path) |
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{ |
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if (!file_exists($path)) { |
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return $path; |
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} |
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return file_get_contents($path); |
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} |
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/** |
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* Split a document into content and metadata. |
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* |
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* @param string $rawDocument |
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* |
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* @return array |
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*/ |
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protected function splitDocument($rawDocument) |
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{ |
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return preg_split($this->pattern, $rawDocument, 2); |
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} |
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/** |
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* Create a new parsed document instance. |
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* |
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* @param string $raw |
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* @param string $rawMetadata |
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* @param string $rawContent |
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* |
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* @return \Kurenai\Document |
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*/ |
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protected function createDocument($raw, $rawMetadata, $rawContent) |
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{ |
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return new Document( |
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$raw, |
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$this->parseMetadata(trim($rawMetadata)), |
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$this->parseContent(trim($rawContent)) |
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); |
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} |
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/** |
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* Parse metadata from raw metadata. |
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* |
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* @param string $rawMetadata |
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* |
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* @return mixed |
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*/ |
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protected function parseMetadata($rawMetadata) |
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{ |
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return $this->metadataParser->parse($rawMetadata); |
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} |
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/** |
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* Parse content from raw content. |
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* |
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* @param string $rawContent |
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* |
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* @return string |
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*/ |
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protected function parseContent($rawContent) |
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{ |
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return $this->contentParser->parse($rawContent); |
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} |
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} |
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daylerees /
kurenai
