Re: [Lzip-bug] How to reset a LZ_Decoder

[Antonio Diaz Diaz]

Hello Jacob, sorry for the delay, but I am lately receiving more mails 
than I can reply.

Jacob Rief wrote:
> is there any way to reset a LZ_Decoder?

Currently not.


> Assume the buffers and flags of an LZ_Decoder are filled with some
> kind of data, but for some reason (for instance a stream corruption)
> you want forward up to the next member and start decompression from
> there. Thus instead of destroying and recreating a LZ_Decoder, a
> useful function would be to somehow clear the buffers and reset the
> internal flags to a state equivalent to a decoder just after creation,
> say LZ_decompress_reset(struct LZ_Decoder* decoder);

Resetting the internal flags to a state equivalent to a decoder just 
after creation can't work. Suppose the next header has not been yet fed 
to LZ_decompress_write. You'll have to switch to a "search" state, then 
write data until the header is found.

Certainly this case deserves its own explicit function, in addition to 
any LZ_decompress_reset that we may find useful to implement, but I'm 
afraid I can write it until next year.


Regards,
Antonio.