Check if buffer has enough space for IncPtr bytes. Returns 'true' if buffer will be overflown.

Preprocess those parameters, which must be processed before the rest of command line. Return 'false' to stop further processing.

We got a complain from user that it is possible to create WinRAR dump with "Create dump file" command in Windows Task Manager and then easily locate U

Return 'false' to quit unpacking the current file or 'true' to continue.

We use it instead of direct PPM.DecodeChar call to be sure that we reset PPM structures in case of corrupt data. It is important, because these struct

Return 'true' if we need to exclude the file from processing.