/**
* Is there a valid - existing - Calibre directory?
* @return boolean true if available
*/
function has_valid_calibre_dir()
{
global $globalSettings;
return has_global_setting(CALIBRE_DIR) && Calibre::checkForCalibre($globalSettings[CALIBRE_DIR]);
}
/**
* @brief scan files for metadata
*
* @param int $id fileid
* @return array $meta metadata
*/
public static function scan($id)
{
$meta = self::create($id);
$path = \OC\Files\Filesystem::getLocalFile(\OC\Files\Filesystem::getPath($id));
/* scan for Calibre-generated metadata.opf first. If found, use it as metadata source,
* if not found continue file/isbn/etc scan
*/
if (!Calibre::get($path, $meta)) {
/* try to call function named 'type' with signature type($path,$meta)
* eg, pdf(), epub(), etc
*/
$type = strtolower(substr(strrchr($path, "."), 1));
if (is_callable(array(__CLASS__, $type))) {
try {
self::$type($path, $meta);
} catch (Exception $e) {
Util::logWarn("no metadata scanner for format " . $type);
}
}
}
/* if title is not set, assume metadata was invalid or not present
* use filename as title
*/
if (!$meta['title']) {
$info = pathinfo($path);
$meta['title'] = basename($path, '.' . $info['extension']);
}
self::save($meta);
return $meta;
}
