So your Mac file is damage and hence desperately looking to resolve the same issue. Then reading this post would surely provide solution to do so. Well no one can deny the fact that file in Mac may gets damaged because of some unforeseen reason which includes file system corruption. Besides catalog corruption, volume damaged etc would also lead into Mac file damage. At this point of time damaged file becomes inaccessible and many time user might have to confront series data loss. The good news is by performing file recovery in Mac, one can successfully overcome from this situation. To accomplish recovery of Mac file damage first and foremost step needs to be taken is search for earlier backup which ever created previously.
By the way Mac offers certain facility for backing up file including Time Machine and iCloud. But if you do not have any sufficient backup then must go with Mac Data Recovery Software for restoring damaged, inaccessible file in Macintosh. This third party program not only provides scanning through its advance scan algorithm but also allows you to retrieve all sorts of corrupted Mac data comfortably. Hope now you get proper understanding about how to deal with if Mac file is damage.