This directory contains examples of the use of zlib and other relevant

programs and documentation.

enough.c

calculation and justification of ENOUGH parameter in inftrees.h

- calculates the maximum table space used in inflate tree

construction over all possible Huffman codes

fitblk.c

compress just enough input to nearly fill a requested output size

- zlib isn't designed to do this, but fitblk does it anyway

gun.c

uncompress a gzip file

- illustrates the use of inflateBack() for high speed file-to-file

decompression using call-back functions

- is approximately twice as fast as gzip -d

- also provides Unix uncompress functionality, again twice as fast

gzappend.c

append to a gzip file

- illustrates the use of the Z_BLOCK flush parameter for inflate()

- illustrates the use of deflatePrime() to start at any bit

gzjoin.c

join gzip files without recalculating the crc or recompressing

- illustrates the use of the Z_BLOCK flush parameter for inflate()

- illustrates the use of crc32_combine()

gzlog.c

gzlog.h

efficiently and robustly maintain a message log file in gzip format

- illustrates use of raw deflate, Z_PARTIAL_FLUSH, deflatePrime(),

and deflateSetDictionary()

- illustrates use of a gzip header extra field

gznorm.c

normalize a gzip file by combining members into a single member

- demonstrates how to concatenate deflate streams using Z_BLOCK

zlib_how.html

painfully comprehensive description of zpipe.c (see below)

- describes in excruciating detail the use of deflate() and inflate()

zpipe.c

reads and writes zlib streams from stdin to stdout

- illustrates the proper use of deflate() and inflate()

- deeply commented in zlib_how.html (see above)

zran.c

zran.h

index a zlib or gzip stream and randomly access it

- illustrates the use of Z_BLOCK, inflatePrime(), and

inflateSetDictionary() to provide random access