CheckDir returns nil if the path is a directory.

CheckDir returns nil if the path is a directory.

CheckFile returns nil if the path is a file.

CheckFile returns nil if the path is a file.

e.g.

the returned file should be closed by the caller.

Return the path to the directory containing the provided path (with a trailing slash).

e.g.

e.g.

Retrieves the longest common path given a list of paths.

the returned file should be closed by the caller.

the returned file should be closed by the caller.

promptMsgTemplate should have two placeholders: the first is for the file path and the second is for the file size.

ReadReqFile returns nil if no file.

e.g.

IgnoreFn if passed a dir, returning true will ignore all subdirs of dir.