Merge branch 'master' of https://github.com/jackycute/HackMD

1 files changed, 20 insertions, 0 deletions

diff --git a/lib/utils.js b/lib/utils.js
index 6c36549b..d9289dca 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -3,3 +3,23 @@
 exports.isSQLite = function isSQLite (sequelize) {
   return sequelize.options.dialect === 'sqlite'
 }
+
+exports.getImageMimeType = function getImageMimeType (imagePath) {
+  var fileExtension = /[^.]+$/.exec(imagePath)
+
+  switch (fileExtension[0]) {
+    case 'bmp':
+      return 'image/bmp'
+    case 'gif':
+      return 'image/gif'
+    case 'jpg':
+    case 'jpeg':
+      return 'image/jpeg'
+    case 'png':
+      return 'image/png'
+    case 'tiff':
+      return 'image/tiff'
+    default:
+      return undefined
+  }
+}