Choose asks the user to pick one of several options, return the one they picked.

ClearScreen clears the user's terminal.

Confirm an action, ask the user to input y/n.

GetOpts gets all options in the form of -(.*) or --(.+).

DiffResultMatch means both files exist and have the same content.

DiffResultMismatch mean both files exist, but their content does not match.

DiffResultOnlyExistsLocal means that the file only exists on the local machine.

DiffResultOnlyExistsRemote means the file only exists on the remote machine.

ErrOptionOutOfRange is returned by Choose if the user's response is invalid.

StorageService is a application that allows users to store files remotely (e.g.

DiffResult explains broadly explains the difference between the remote and local versions of a file.

SkipCallback gives the path and info of a local file, and should return true if that file is to be skipped in the walk.

WalkDiffsCallback is the callback function type in StorageService.WalkDifs.