public function parse($markdown)
{
if (!is_string($markdown)) {
throw new InvalidArgumentException('markdown', 'type_invalid');
}
if (!mb_check_encoding($markdown, 'UTF-8')) {
throw new InvalidArgumentException('markdown', 'encoding_invalid');
}
// 目的：我们希望用户输入在 code block 以外的尖括号当成普通字符对待，而不是 HTML 标签被处理
// 替换所有尖括号（成对出现时会被当成标签而忽略）
$markdown = str_replace('<', '<', $markdown);
$markdown = str_replace('>', '>', $markdown);
$html = Marked::render($markdown, ['gfm' => true, 'tables' => true, 'breaks' => true, 'sanitize' => false, 'langPrefix' => 'prettyprint lang-']);
// 恢复 <code> 中的特殊符号（它们被 escape 了两次，第二次是 markdown 引擎）
$pBegin = 0;
while (false !== ($pBegin = stripos($html, '<code>', $pBegin))) {
$pEnd = strpos($html, '</code>', $pBegin + 6);
if ($pEnd === false) {
break;
}
$inner = substr($html, $pBegin + 6, $pEnd - $pBegin - 6);
$inner = str_replace('&lt;', '<', $inner);
$inner = str_replace('&gt;', '>', $inner);
$html = substr_replace($html, $inner, $pBegin + 6, $pEnd - $pBegin - 6);
$pBegin += strlen($inner) + 6;
}
// 由 HTML Purifier 进一步过滤内容确保输入安全
$html = $this->purifier->purify($html);
return $html;
}
public static function edit($title, $md, $url, $time = null, $category = null, $tags = [], $state = self::STATE_OPEN, $id = null)
{
if ($id !== null && mb_strlen((string) $id) !== 24) {
throw new \Exception('Invalid argument: id');
}
if ($time == null) {
$time = time();
}
$html = \Breezewish\Marked\Marked::render($md, ['langPrefix' => 'prettyprint lang-', 'breaks' => true]);
if (P_HTML_FILTER) {
$html = \BWBlog\Escaper::purify($html);
}
// page doesn't need short introductions
if ($state != self::STATE_PAGE) {
// process introduction
foreach (['<!-- more -->', '<!--more -->', '<!-- more-->', '<!--more-->'] as $meta) {
$pos = mb_stripos($html, $meta, 0, 'UTF-8');
if ($pos !== false) {
break;
}
}
if ($pos !== false) {
$intro = \BWBlog\Utils::closeTags(mb_substr($html, 0, $pos));
$more = true;
} else {
$intro = $html;
$more = false;
}
} else {
$more = false;
$intro = '';
}
// page uses direct url
if ($state != self::STATE_PAGE) {
$rest_url = \BWBlog\Utils::trimRestURI(str_replace('\\', '/', date('Y/m/d/', $time) . $url));
} else {
$rest_url = \BWBlog\Utils::trimRestURI(str_replace('\\', '/', 'page/' . $url));
}
$doc = ['title' => $title, 'content' => ['markdown' => $md, 'html' => $html, 'introhtml' => $intro, 'more' => $more], 'time' => ['main' => $time], 'url' => $url, 'rest_url' => $rest_url, 'category' => $category, 'lcategory' => strtolower($category), 'tags' => $tags, 'ltags' => array_map('strtolower', array_map('trim', $tags)), 'state' => (int) $state];
global $db;
if ($id === null) {
// create
$doc['time']['create'] = time();
$db->selectCollection(MONGO_PREFIX . 'posts')->insert($doc);
return $doc['_id'];
} else {
// update
$doc['time']['edit'] = time();
$result = $db->selectCollection(MONGO_PREFIX . 'posts')->findAndModify(['_id' => new \MongoId((string) $id)], ['$set' => $doc], ['_id' => 1], ['upsert' => true, 'new' => true]);
return $result['_id'];
}
}
Marked::$inline['link'] = Utils::replace(Marked::$inline['link'], array(array('inside', Marked::$inline['_inside']), array('href', Marked::$inline['_href'])));
Marked::$inline['reflink'] = Utils::replace(Marked::$inline['reflink'], array(array('inside', Marked::$inline['_inside'])));
/**
* Normal Inline Grammar
*/
Marked::$inline['normal'] = Marked::$inline;
/**
* Pedantic Inline Grammar
*/
Marked::$inline['pedantic'] = Marked::$inline['normal'];
Marked::$inline['pedantic']['strong'] = new RegExp('^__(?=\\S)([\\s\\S]*?\\S)__(?!_)|^\\*\\*(?=\\S)([\\s\\S]*?\\S)\\*\\*(?!\\*)');
Marked::$inline['pedantic']['em'] = new RegExp('^_(?=\\S)([\\s\\S]*?\\S)_(?!_)|^\\*(?=\\S)([\\s\\S]*?\\S)\\*(?!\\*)');
/**
* GFM Inline Grammar
*/
Marked::$inline['gfm'] = Marked::$inline['normal'];
Marked::$inline['gfm']['escape'] = Utils::replace(Marked::$inline['escape'], array(array('])', '~|])')));
Marked::$inline['gfm']['url'] = new RegExp('^(https?:\\/\\/[^\\s<]+[^<.,:;"\')\\]\\s])');
Marked::$inline['gfm']['del'] = new RegExp('^~~(?=\\S)([\\s\\S]*?\\S)~~');
Marked::$inline['gfm']['text'] = Utils::replace(Marked::$inline['text'], array(array(']|', '~]|'), array('|', '|https?:\\/\\/|')));
/**
* GFM + Line Breaks Inline Grammar
*/
Marked::$inline['breaks'] = Marked::$inline['gfm'];
Marked::$inline['breaks']['br'] = Utils::replace(Marked::$inline['br'], array(array('{2,}', '*')));
Marked::$inline['breaks']['text'] = Utils::replace(Marked::$inline['gfm']['text'], array(array('{2,}', '*')));
/**
* Options
*/
Marked::$defaults = array('gfm' => true, 'tables' => true, 'breaks' => false, 'pedantic' => false, 'sanitize' => false, 'smartLists' => false, 'highlight' => null, 'langPrefix' => 'lang-', 'smartypants' => false, 'headerPrefix' => '', 'renderer' => new Renderer(), 'xhtml' => false);