add new function getMimeType()

inc/inc.Utils.php

@@ -395,6 +395,34 @@ function getFilenameByDocname($content) { /* {{{ */
 	return mb_ereg_replace("([^\w\s\d\-_~,;\[\]\(\).])", '', $filename);
 } /* }}} */
 
+/**
+ * Return the mimetype of a given file
+ *
+ * This functions uses finfo but will correct some mimetypes which are
+ * not propperly determined or could be more specific, e.g. text/plain
+ * which is actually text/markdown. In thoses cases
+ * the file extension will be taken into account.
+ *
+ * @param string $filename name of file on disc
+ * @return string mimetype
+ */
+function getMimeType($filename) { /* {{{ */
+		$finfo = finfo_open(FILEINFO_MIME_TYPE);
+		$mimetype = finfo_file($finfo, $filename);
+
+		switch($mimetype) {
+		case 'application/octet-stream':
+		case 'text/plain':
+			$lastDotIndex = strrpos($filename, ".");
+			if($lastDotIndex === false) $fileType = ".";
+			else $fileType = substr($name, $lastDotIndex);
+			if($fileType == '.md')
+				$mimetype = 'text/markdown';
+			break;
+		}
+		return $mimetype;
+} /* }}} */
+
 function getLogger($prefix='', $mask=PEAR_LOG_INFO) { /* {{{ */
 	global $settings;