zlib

ZLIB Header Question

Hi, I would like to know how to determine how many zlib files are contained in a single file. An example; Think I have 5 different files, and compressed them separately by using zlib. Then I combined them. So, I have one file contains 5 different zlib files. Now, how can I find how many zlib files are in that single file? I just need t...

Calling a main-like function using argv[]

I have some code here to call minizip(), a boilerplate dirty renamed main() of the minizip program, but when I compile, I get undefined reference to `minizip(int, char*)*. Here's the code. int minizip(int argc, char* argv[]); void zipFiles(void) { char arg0[] = "BBG"; char arg1[] = "-0"; char arg2[] = "out.zip"; char arg3[] = "serv...

zlib library problem related with Virtual Box version

Hi to all, on the last days I had a really annoying problem, that is just now solved, but I'll hope that some of you experienced it and figured out a solution for that. I created and installed Ubuntu 10.04 on Virtualbox 3.2.0 (installed under Win7-32 bits). On this VM was installed and configured rvm, ruby 1.8.7 and some gems. When trie...

Can't run "gem list"!

I get an error when i run: vagrant@vagrantup:~$ sudo gem list ERROR: Loading command: list (LoadError) no such file to load -- zlib ERROR: While executing gem ... (NameError) uninitialized constant Gem::Commands::ListCommand Even if I don't use sudo I get the same error message. It's on Ubuntu 10.4 and I have installed zlib...

One library for deflate, gzip, and zlib in .net

First, let's define some commonly confused terms: deflate = compression_algorithm; zlib = header + deflate + trailer; gzip = header + deflate + trailer; I'm looking for a library that will basically let me do the following: if(method == "gzip"){ Response.Filter = new CompressionLibrary.OutputStream(Response.Filter, CompressionLib...

zlib.h versus zlib.net

I have made a compression in c/c++ (NO UNDER THE CLR) using the library zlib.h, and it works great. the functions that I use deflate() and inflate(). Now the file compressed by the c application, I want to decompress it with the zlib.net application, using c#, but I do not manage to get it working. When trying to decompress it, I get th...

compress a string in python 3 ?

I don't understand in 2.X it worked : import zlib zlib.compress('Hello, world') now i have a : zlib.compress("Hello world!") TypeError: must be bytes or buffer, not str How can i compress my string ? Regards Bussiere ...

Fatal error: Class 'ZipArchive' not found in

hi friends, I have a problem that I install 'Archive_Zip 0.1.1' on Linux server, but when I try to run the script to create the zip file it gives the fatal error "Fatal error: Class 'ZipArchive' not found in ---" where I put the code $zip = new ZipArchive; var_dump($zip); $res = $zip->open($filename, ZipArchive::OVERWRITE); if($res !...

Difference between stateless and stateful compression?

In the chapter Filters (scroll down ~50%) in an article about the Remote Call Framework are mentioned 2 ways of compression: ZLib stateless compression ZLib stateful compression What is the difference between those? Is it ZLib-related or are these common compression methods? While searching I could only find stateful and stateless w...

PIL library for Python2.6 not installing properly

I've got a Debian 5 (lenny) setup with Python 2.6 built from source (2.6 isn't available through APT nor backports for some reason) and it has the PIL library installed. During installation it passes telling me I have PNG/ZIP support, which is what i need, but when I either try to run the python script (which works on my windows machine...

Loading PNGs with CImg

I am unable to load PNGs with CImg. I've heard you need to get libpng / zlib to get to work first but I am unsure how to set this up. I am on Ubuntu. My source: #include <cmath> #include <cstdio> #include <string> #include <assert.h> #include <stdarg.h> #define cimg_using_png #include "CImg.h" using namespace cimg_library; #include "pn...

How slow is gzuncompress?

I'm working with a very simple filesystem database in order to benefit from performance. Unfortunately, the trade-off is disk space. I'm thinking about compressing data everytime I write and read from the filesystem database using gzuncompress and gzcompress. How slow are those functions? Can they be used without affecting my system perf...

Moving compressed strings between C++ and PHP with zlib

I'm working on a project where a Windows web server running PHP is communicating over a very slow connection with a back end Linux server running an application written in C++. Because the connection between the two machines is so slow, I'd like to compress the traffic moving between them. I've gotten to where I can compress a string, ...

Installing Python-2.7 on Ubuntu 10.4

I can't seem to install zlib properly, I installed Python from source on Ubuntu10.4 '######## edit ##################### bobince and Luper helped. Make sure you install these packages and then recompile Python: sudo aptitude install zlib1g-dev libreadline6-dev libdb4.8-dev libncurses5-dev '################################# After inst...

Zlib Decompress works on Linux but not on Windows

Hi, I have a valid Zlib stream from a PDF file that I manage to decompress successfully under Linux with Perl and Python, however the same scripts fail to decompress the same stream under Windows, looks like I'm missing something, any idea what? ...