ZPack File Format, spec and tools
Posted by Sachin Garg on 10th May 2006 | Permanent Link
Today at comp.compression, Brendan G Bohannon announced a vaguely PAQ like file format supporting compression and read/write operation (as zipfiles are not that well suited to read/write). The format will assume no fragmentation of smaller files, rather a file is to be moved if it expands beyond the space available to it.
Current default file extension will be “zpk” and will use deflate with a 64kB window. The CRC algo will be the same algo used in ZIP and PNG for example.
You can checkout the code and format specs.
Another related comp.compression thread.