Hi, I'm trying to write an NBD driver for XZ files. This requires random access to the files.
So far I've have loaded the index from the file, and I'm using lzma_index_iter_locate (successfully) to locate the block and uncompressed offset that contains the byte of interest. However I'm stuck as to where I go from there. I am able to decode the block header using lzma_block_header_decode. But should I need to do that? Isn't the block already "loaded" in the index? I'm also able to read the data from the block (although decoding fails at the end of the block -- I don't understand why). Here is my current code -- see especially the function 'xzfile_pread' in the first file: http://oirase.annexia.org/tmp/xzfile.c http://oirase.annexia.org/tmp/xzfile.h http://oirase.annexia.org/tmp/xz.c I suppose the answer is "no", but is this stuff documented anywhere? Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming blog: http://rwmj.wordpress.com Fedora now supports 80 OCaml packages (the OPEN alternative to F#)
