When I gzopen & gzread from a gzip file, it works OK. But I when I try to uncompress the same data from memory (either by reading to memory with fread or mmap()ing) using decompress, I get Z_DATA_ERROR. Is it because gzip file has some kind of headers that uncompress doesn't want?
How can I get... (3 Replies)
I wrote a function which for uncompressing data for gzip or deflate format using zlib,see followed code;
source param is pointed to the compressed data,len param is the size of compressed data,
dest param is for returning the address which pointed to the uncompressed data;the last gzip param tell... (0 Replies)
Hi all,
I wanted to know how to compress a .zlib file..
an working on unix
so pls suggest accordingly.
the file is pretty big(500 mb)
also i would like to know any weblinks where i can get more info on various compressions commands in unix
i have tried zip,compress commands
but i have not... (1 Reply)
Is there a port or shorthand way of installing the zlib library on FreeBSD? I currently use the following:
wget http://zlib.net/zlib-1.2.5.tar.gz
tar zxf zlib*.gz
cd zlib*\.
./configure --libdir=/usr/lib --includedir=/usr/include
make install clean
This is somewhat contrived code and for a... (4 Replies)
I'm trying to write my first shell script and got a bit stuck with this:
I've got myscript.sh that executes from /fromhere.
If the script is run with the syntax ./myscript.sh tothere:
I need to make a variable inside the script containing /fromhere/tothere
...and if the script is run with... (10 Replies)
I would like to install a binary from source on a custom path, say /usr/local/myapps. There is no --prefix option in ./configure How can I "make install" at custom path. I tried this.
No --prefix
root@server # ./configure --help | grep prefix
root@server #
Make install
... (3 Replies)
Hi All,
Can you please provide some pointers to move files from Base path to multiple paths in efficient way.Folder Structure is already created.
/Path/AdminUser/User1/1111/Reports/aaa.txt to /Path/User1/1111/Reports/aaa.txt
/Path/AdminUser/User1/2222/Reports/bbb.txt to... (6 Replies)
Hello I have been trying to compile glib 2.28 with needs Zlib. During the compilation process I received these messages
Then giving a look at the configure of Zlib, there was an option to static link it and I obviously used it.
So I think I can solve it by compiling a shared zlib, or by... (4 Replies)
Currently I am using this laborious command
lvdisplay | awk '/LV Path/ {p=$3} /LV Name/ {n=$3} /VG Name/ {v=$3} /Block device/ {d=$3; sub(".*:", "/dev/dm-", d); printf "%s\t%s\t%s\n", p, "/dev/mapper/"v"-"n, d}'
Would like to know if there is any shorter method to get this mapping of... (2 Replies)
Hello,
I am creating a file with all the source folders included in my git branch, when i grep for the used source, i found source included as relative path instead of absolute path, how can convert relative path to absolute path without changing directory to that folder and using readlink -f ? ... (4 Replies)
Discussion started by: Sekhar419
4 Replies
LEARN ABOUT OPENDARWIN
zlib
ZLIB(3) Library Functions Manual ZLIB(3)NAME
zlib - compression/decompression library
SYNOPSIS
[see zlib.h for full description]
DESCRIPTION
The zlib library is a general purpose data compression library. The code is thread safe. It provides in-memory compression and decompres-
sion 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 (provid-
ing 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.
All functions of the compression library are documented in the file zlib.h. The distribution source includes examples of use of the
library the files example.c and minigzip.c.
A Java implementation of zlib is available in the Java Development Kit 1.1
http://www.javasoft.com/products/JDK/1.1/docs/api/Package-java.util.zip.html
A Perl interface to zlib, written by Paul Marquess (pmarquess@bfsec.bt.co.uk) is available at CPAN (Comprehensive Perl Archive Network)
sites, such as:
ftp://ftp.cis.ufl.edu/pub/perl/CPAN/modules/by-module/Compress/Compress-Zlib*
A Python interface to zlib written by A.M. Kuchling <amk@magnet.com> is available from the Python Software Association sites, such as:
ftp://ftp.python.org/pub/python/contrib/Encoding/zlib*.tar.gz
SEE ALSO
Questions about zlib should be sent to:
zlib@quest.jpl.nasa.gov or, if this fails, to the author addresses given below. The zlib home page is:
http://www.cdrom.com/pub/infozip/zlib/
The data format used by the zlib library is described by RFC (Request for Comments) 1950 to 1952 in the files:
ftp://ds.internic.net/rfc/rfc1950.txt (zlib format)
rfc1951.txt (deflate format)
rfc1952.txt (gzip format)
These documents are also available in other formats from:
ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html
AUTHORS
Version 1.1.4 Copyright (C) 1995-2002 Jean-loup Gailly (jloup@gzip.org) and Mark Adler (madler@alumni.caltech.edu).
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. See the distribution directory with respect to requirements governing redistribution. The deflate
format used by zlib was defined by Phil Katz. The deflate and zlib specifications were written by L. Peter Deutsch. Thanks to all the
people who reported problems and suggested various improvements in zlib; who are too numerous to cite here.
UNIX manual page by R. P. C. Rodgers, U.S. National Library of Medicine (rodgers@nlm.nih.gov).
11 March 2002 ZLIB(3)