File "RuleTrait.php"

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<?php
/**
 * @copyright Copyright (c) 2014 Carsten Brandt
 * @license https://github.com/cebe/markdown/blob/master/LICENSE
 * @link https://github.com/cebe/markdown#readme
 */

namespace cebe\markdownparser\block;

/**
 * Adds horizontal rules
 */
trait RuleTrait
{
	/**
	 * identify a line as a horizontal rule.
	 */
	protected function identifyHr($line)
	{
		// at least 3 of -, * or _ on one line make a hr
		return (($l = $line[0]) === ' ' || $l === '-' || $l === '*' || $l === '_') && preg_match('/^ {0,3}([\-\*_])\s*\1\s*\1(\1|\s)*$/', $line);
	}

	/**
	 * Consume a horizontal rule
	 */
	protected function consumeHr($lines, $current)
	{
		return [['hr'], $current];
	}

	/**
	 * Renders a horizontal rule
	 */
	protected function renderHr($block)
	{
		return $this->html5 ? "<hr>\n" : "<hr />\n";
	}

}