/**
* Reads article's markdown string.
*
* @param Article $article Article to be read.
* @param string $markdown Markdown string.
*
* @return Article
*
* @SuppressWarnings(PHPMD)
*/
protected function readMarkdown(Article $article, $markdown)
{
// line 0: title
// line 1: ======
// line 2: date
// line 3:  image
// line 4: empty
// line 5: teaser
// line ...
// line i: empty
// line i+1: content
// line ...
$teaser = '';
$inTeaser = true;
$content = '';
$lines = explode(NL, $markdown);
foreach ($lines as $i => $line) {
$trimmedLine = trim($line);
// line 0 must always be the title
if ($i === 0) {
$article->setTitle($trimmedLine);
continue;
}
// line 1 must always be a horizontal line / hr
if ($i === 1) {
continue;
}
// line 2 must always be the date
if ($i === 2) {
if (!empty($trimmedLine) && preg_match('/^\\d{4}-\\d{2}-\\d{2}$/', $trimmedLine)) {
$dateElements = explode('-', $trimmedLine);
$date = new DateTime('@' . mktime(12, 0, 0, $dateElements[1], $dateElements[2], $dateElements[0]));
}
$article->setDate($date);
continue;
}
// line 3 *might* be a cover image
if ($i === 3) {
if (!empty($trimmedLine) && preg_match('/^!\\[cover\\]\\(([^\\s]+)((\\s+)(.*))?\\)/sUi', $trimmedLine, $matches)) {
// $matches[1] is the cover URL
if (isset($matches[1])) {
$article->setCover($matches[1]);
continue;
}
}
}
// if line is empty then no longer include the content in the teaser
if (empty($trimmedLine) && $i > 4) {
$inTeaser = false;
}
// include this line in either teaser or content
if ($inTeaser) {
$teaser .= $line . NL;
} else {
$content .= $line . NL;
}
}
$teaser = trim($teaser);
$content = trim($content);
// parse markdown for both teaser and content
$teaser = MarkdownExtra::defaultTransform($teaser);
$content = MarkdownExtra::defaultTransform($content);
$article->setTeaser($teaser);
$article->setContent($content);
return $article;
}
