25 Install Operation for Access Google Drive™
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zlib.h -- interface of the 'zlib' general purpose compression library version 1.1.3, July 9th, 1998
Copyright (C) 1995-1998 Jean-loup Gailly and Mark Adler
This software is provided 'as-is', without any express or implied warranty. In no event will the
authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose, including commercial
applications, and to alter it and redistribute it freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not claim that you wrote
the original software. If you use this software in a product, an acknowledgment in the
product documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be misrepresented
as being the original software.
3. This notice may not be removed or altered from any source distribution.
Jean-loup Gailly Mark Adler
jloup@gzip.org madler@alumni.caltech.edu
The data format used by the zlib library is described by RFCs (Request for Comments) 1950
to 1952 in the files ftp://ds.internic.net/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate
format) and rfc1952.txt (gzip format).
The 'zlib' compression library provides in-memory compression and decompression
functions, including integrity checks of the uncompressed data. This version of the library
supports only one compression method (deflation) but other algorithms will be added later
and will have the same stream interface.
Compression can be done in a single step if the buffers are large enough (for example if an
input file is mmap'ed), or can be done by repeated calls of the compression function. In the
latter case, the application must provide more input and/or consume the output (providing
more output space) before each call.
The library also supports reading and writing files in gzip (.gz) format with an interface
similar to that of stdio.
The library does not install any signal handler. The decoder checks the consistency of the
compressed data, so the library should never crash even in case of corrupted input.
for more info about .ZIP format, see ftp://ftp.cdrom.com/pub/infozip/doc/appnote-970311-
iz.zip
PkWare has also a specification at ftp://ftp.pkware.com/probdesc.zip
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