FileDeleter

This class provides ability to track the reference counts of a set of index files and delete them when their counts decreased to 0.

This class is NOT thread-safe, the user should make sure the thread-safety themselves

Constructors

constructor(directory: Directory, messenger: (FileDeleter.MsgType, String) -> Unit)

Types of messages this file deleter will broadcast REF: messages about reference FILE: messages about file

Tracks the reference count for a single index file:

Decrease ref counts for all provided files, delete them if ref counts down to 0, even on exception. Throw first exception hit, if any

delete only files that are unref'ed

return true only if file is touched and also has larger than 0 ref count

get ref count for a provided file, if the file is not yet recorded, this method will return 0

fun incRef(fileName: String)

if the file is not yet recorded, this method will create a new RefCount object with count 0