PhutilRemarkupHorizontalRuleBlockRule.php
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	<?php

	final class PhutilRemarkupHorizontalRuleBlockRule
	extends PhutilRemarkupBlockRule {

	/**
	* This rule executes at priority `300`, so it can preempt the list block
	* rule and claim blocks which begin `---`.
	*/
	public function getPriority() {
	return 300;
	}

	public function getMatchingLineCount(array $lines, $cursor) {
	$num_lines = 0;
	$pattern = '/^\s(?:_{3,}\|\\s?\\s?\(\s\|\)\|\-\s?\-\s?\-(\s\|\-)*)$/';
	if (preg_match($pattern, rtrim($lines[$cursor], "\n\r"))) {
	$num_lines++;
	$cursor++;
	while (isset($lines[$cursor]) && !strlen(trim($lines[$cursor]))) {
	$num_lines++;
	$cursor++;
	}
	}

	return $num_lines;
	}

	public function markupText($text, $children) {
	if ($this->getEngine()->isTextMode()) {
	return rtrim($text);
	}

	return phutil_tag('hr', array('class' => 'remarkup-hr'));
	}

	}