The CEZCompressor class provides in-memory compression functions, including integrity checks of the uncompressed data. This version of the library supports only one compression method (deflation). Compression can be done in a single step (using CompressL()) if the buffers are large enough (for example if an input file is mmap'ed), or can be done by repeated calls of the DeflateL() function. The source data is compressed to the target buffer (both source and target contained within the buffer manager argument), and various other arguments distinguish the different compression settings.

Note: In this version of the library a windowBits value of 8 is unsupported due to a problem with the window size being set to 256 bytes. Although a value of 8 will be accepted by the CEZCompressor constructors, as it is being changed internally by Zlib from 8 to 9, it will not be possible to use the same value for decompression. This is because the Zlib functions called by the CEZDecompressor constructors do not make the same change internally and as a result a KEZlibErrData is returned when calling InflateL(). It is therefore advised that for this version of the library windowBits of 9 is used in place of 8.