I'm looking for some example code (C preferred, something else if need be) that will:
1) Demonstrate using liblzma (or whatever library xz-utils produces), but producing output in the xz format, not the lzma format. 2) Demonstrate using liblzma (or whatever) for memory-to-memory compression, and memory-to-memory decompression (I'm only compressing smallish chunks, and wish to do my own I/O so I can sidestep the buffer cache) 3) Ideally use a minimum of C preprocessor symbols, as this'll be for a ctypes-based module for Python - not a C extension module as is usual in CPython, but a ctypes-based module so it'll run on the CPython's and Pypy - and Jython too if I'm lucky. If I must write a stubbish wrapper to reduce the preprocessor dependency so be it, but I'd prefer not to of course. I already have something written that'll open a pipe to/from an xz binary, and that works fine, but for one of the next steps in my backshift project I want a C API-based module. Backshift: http://stromberg.dnsalias.org/~dstromberg/backshift/ I'm not just looking for pyliblzma - I want the xz format. I also want something I can make production-quality; pyliblzma seems forever beta. BTW, does the underlying library API (need to) change much? ctypes-based modules tend to be pretty sensitive to API changes. Thanks!
