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<?php
declare(strict_types=1);
/*
* This file is part of the league/commonmark package.
*
* (c) Colin O'Dell <colinodell@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace League\CommonMark\Extension\FrontMatter\Data;
use League\CommonMark\Extension\FrontMatter\Exception\InvalidFrontMatterException;
final class LibYamlFrontMatterParser implements FrontMatterDataParserInterface
{
public static function capable(): ?LibYamlFrontMatterParser
{
if (! \extension_loaded('yaml')) {
return null;
}
return new LibYamlFrontMatterParser();
}
/**
* {@inheritDoc}
*/
public function parse(string $frontMatter)
{
if (! \extension_loaded('yaml')) {
throw new \RuntimeException('Failed to parse yaml: "ext-yaml" extension is missing');
}
$result = @\yaml_parse($frontMatter);
if ($result === false) {
throw new InvalidFrontMatterException('Failed to parse front matter');
}
return $result;
}
}
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