public function transform(Response $response)
{
//copy response over into a StreamResponse
// TODO: Find a way to use StreamResponse but strip front YAML
// That probably means caching a copy of this request's content
// somewhere in another file
// $response = new StreamResponse(
// $response->getUrl(),
// $response->getFile(),
// $response->getContent(),
// $response->getHeaders(),
// $response->getMeta()
// );
//set meta and headers
$meta = $response->getMeta();
if (!isset($meta['skipTemplate'])) {
$response->setMeta(array('skipTemplate' => true));
}
return $response;
}
public function transform(Response $response)
{
$response->setContent(trim(MarkdownExtra::defaultTransform($response->getContent())));
$response->setHeaders(array('Content-Type' => 'text/html'));
return $response;
}
public function doTransform(Interfaces\Response $response)
{
//load content from file
$content = $response->getContent();
if (is_file($response->getFile())) {
$content = file_get_contents($response->getFile());
}
//set up default meta and headers
$meta = $this->defaultMeta($response->getFile());
//look for accompanying YAML .meta file
$metaFile = $response->getFile() . $this->getConfig()->get('ContentLayer.metaSuffix');
if (file_exists($metaFile) && is_readable($metaFile)) {
$newMeta = Yaml::parse(file_get_contents($metaFile));
if ($newMeta) {
$meta = array_replace_recursive($meta, $newMeta);
}
}
//try to find YAML front-matter
if (preg_match("/^\\-\\-\\-[\\s]*\$/m", $content)) {
$contentSplit = preg_split("/^\\-\\-\\-[\\s]*\$/m", $content);
if (count($contentSplit) == 3) {
$content = $contentSplit[2];
$newMeta = Yaml::parse($contentSplit[1]);
if ($newMeta) {
$meta = array_replace_recursive($meta, $newMeta);
}
}
}
//set content, meta and headers into response
$response->setHeaders($meta['headers']);
unset($meta['headers']);
$response->setMeta($meta);
$response->setContent($content);
//locate handler
$chosenHandler = false;
//file handlers
$chosenHandler = $this->returnPatternMatch($this->getConfig()->get('ContentLayer.fileHandlerPatterns'), $response->getFile()) ?: $chosenHandler;
//default handler
if (!$chosenHandler) {
$chosenHandler = $this->getConfig()->get('ContentLayer.defaultHandler');
}
//construct handler and apply transformation
$chosenHandler = new $chosenHandler($this->getConfig());
$response = $chosenHandler->transform($response);
//clean up meta and headers
$meta = $response->getMeta();
$headers = $response->getHeaders();
//ETags
if (isset($headers['ETag']) && $headers['ETag'] == 'auto') {
$headers['ETag'] = md5($response->getContent());
}
//try to force date to a DateTime
if (!$meta['date'] instanceof \DateTime) {
$time = strtotime($meta['date']);
$meta['date'] = new \DateTime();
$meta['date']->setTimeStamp($time);
}
//set title to filename
if (!isset($meta['title']) || !$meta['title']) {
$meta['title'] = preg_replace("/^.*[\\/\\\\]/", '', $response->getFile());
}
//set single category
if (isset($meta['category']) && $meta['category']) {
$meta['categories'] = $meta['category'];
unset($meta['category']);
}
//support categories and tags as strings
if (!is_array($meta['categories'])) {
$meta['categories'] = preg_split("/,\\s*/", $meta['categories']);
}
if (!is_array($meta['tags'])) {
$meta['tags'] = preg_split("/,\\s*/", $meta['tags']);
}
//Cache-control: max-age
if ($headers['Cache-control']['max-age'] == 'auto') {
if (isset($meta['ttl']) && $meta['ttl']) {
$headers['Cache-control']['max-age'] = $meta['ttl'];
} else {
unset($headers['Cache-control']['max-age']);
}
}
//write cleaned-up meta and headers into response
$response->setMeta($meta);
$response->setHeaders($headers);
//return the altered response
return $response;
}
