Glob expands '**' patterns into multiple patterns to satisfy https://golang.org/pkg/path/filepath/#Match.

GlobPatterns detects the use of "**" and expands it to standard glob patterns up to a max depth.

IsSameFile checks if the given File path corresponds with the FileInfo given.

NewState creates a new file state.

NewStates generates a new states registry.

State is used to communicate the reading state of a file.

States handles list of FileState.