/**
* Determine the most appropriate content type for a file
*
* @param string $path The (webDAV) path to the file
* @return string The (MIME) content type
*/
public static function determineContentType($path)
{
if (is_null(self::$extensions)) {
self::$extensions = array('doc' => 'application/msword', 'dot' => 'application/msword', 'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document', 'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template', 'pot' => 'application/vnd.ms-powerpoint', 'pps' => 'application/vnd.ms-powerpoint', 'ppt' => 'application/vnd.ms-powerpoint', 'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template', 'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow', 'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation', 'wp' => 'application/wordperfect', 'wp5' => 'application/wordperfect', 'wp6' => 'application/wordperfect', 'wpd' => 'application/wordperfect', 'xls' => 'application/vnd.ms-excel', 'xlt' => 'application/vnd.ms-excel', 'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', 'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template');
}
$contentType = null;
$filename = basename($path);
$lastDot = strrpos($filename, '.');
if ($lastDot !== false) {
$extension = substr($filename, $lastDot + 1);
if (array_key_exists($extension, self::$extensions)) {
$contentType = self::$extensions[$extension];
}
}
if (is_null($contentType)) {
$finfo = new finfo(FILEINFO_MIME);
$contentType = $finfo->file(self::localPath($path));
}
if ($contentType === false) {
return null;
}
return $contentType;
}
