PhutilRemarkupEngineRemarkupNoteBlockRule.php
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	<?php

	final class PhutilRemarkupEngineRemarkupNoteBlockRule
	extends PhutilRemarkupEngineBlockRule {

	public function getMatchingLineCount(array $lines, $cursor) {
	$num_lines = 0;

	if (preg_match($this->getRegEx(), $lines[$cursor])) {
	$num_lines++;
	$cursor++;

	while (isset($lines[$cursor])) {
	if (trim($lines[$cursor])) {
	$num_lines++;
	$cursor++;
	continue;
	}
	break;
	}
	}

	return $num_lines;
	}

	public function markupText($text, $children) {
	$matches = array();
	preg_match($this->getRegEx(), $text, $matches);

	if (idx($matches, 'showword')) {
	$word = $matches['showword'];
	$show = true;
	} else {
	$word = $matches['hideword'];
	$show = false;
	}

	$class_suffix = phutil_utf8_strtolower($word);

	// This is the "(IMPORTANT)" or "NOTE:" part.
	$word_part = rtrim(substr($text, 0, strlen($matches[0])));

	// This is the actual text.
	$text_part = substr($text, strlen($matches[0]));
	$text_part = $this->applyRules(rtrim($text_part));

	$text_mode = $this->getEngine()->isTextMode();
	if ($text_mode) {
	return $word_part.' '.$text_part;
	}

	if ($show) {
	$content = array(
	phutil_tag(
	'span',
	array(
	'class' => 'remarkup-note-word',
	),
	$word_part),
	' ',
	$text_part);
	} else {
	$content = $text_part;
	}

	return phutil_tag(
	'div',
	array(
	'class' => 'remarkup-'.$class_suffix
	),
	$content);
	}

	private function getRegEx() {
	$words = array(
	'NOTE',
	'IMPORTANT',
	'WARNING',
	);

	foreach ($words as $k => $word) {
	$words[$k] = preg_quote($word, '/');
	}
	$words = implode('\|', $words);

	return
	'/^(?:'.
	'(?:$(?P<hideword>'.$words.')$)'.
	'\|'.
	'(?:(?P<showword>'.$words.'):))\s*'.
	'/';
	}
	}