zlib

So, I'm trying to do read-only access of a zip file in Java, decompressing in a multithreaded manner, because my standard simple singly-threaded solution of ZipFile/ZipEntry using the enumeration and inputstreams and what-not results in it taking about five full seconds just to decompress into memory a 50-meg zipfile which takes one second AT MOST for my disk to read without decompressing. However, the entire Java zip library is synchronized to an incredibly-obnoxious degree, no doubt because it's all abstracted for reading/writing/etc. in the same code instead of having nice efficient non

I'm working on a commercial project that requires a couple of files to be bundled (packed) into an archive and then compressed. Right now we have zlib in our utility library, but it doesn't look like zlib has the functionality to compress multiple files into one archive. Does anyone know of free libraries I'd be able to use for this? Amber Perhaps libtar ? Also under a BSD license. 7Zip has a full SDK for several languages including C and C++. The compression is extremely good, albeit not very fast. The code is licensed under the LGPL. You could use libzip - it's under a BSD-like licence so it

I have the first contiguous 2/3rds of a file that was compressed with zlib's deflate() function. The last 1/3 was lost in transmission. The original uncompressed file was 600KB. Deflate was called multiple times by the transmitter while chopping the original file into chunk sizes of 2KB and passing Z_NO_FLUSH until the end of file when Z_FINISH was passed. The resulting complete compressed file was transmitted, but partially lost as described. Is it possible to recover part of the original file? If so, any suggestions on how? I'm using both the plain C implementation of ZLIB, and/or the Python

I have ubuntu 10.04 and want to install the latest boost library 1.44_0 I downloaded the tar.gz file and unpacked it into /usr/local/boost_1_44_0 I already have the boost 1.40 version install from synaptic. So I want to compile and link against 1.44 because I'm wanting to use some new libraries that are not in the older version such as the property tree. But, I'm having some issues getting it going. Ran sudo ./bootstrap.sh (that went fine) Ran ./bjam install There were errors with bzip2. gcc.compile.c++ bin.v2/libs/iostreams/build/gcc-4.4.3/release/threading-multi/file_descriptor.o gcc.compile

I am using eclipse to build application for Blackberry. I attached a zip file with my application. Please help me, I don't know how to retrieve data form the zip file in application development. In BlackBerry we can use two compression standarts: GZip and ZLib . Choose one, then compress your file and add to project. Then you should be able to open it as an resource. After that decompress it with GZIPInputStream or ZLibInputStream accordingly. Example (uncompress and print text from test.gz attached to project): try { InputStream inputStream = getClass().getResourceAsStream("test.gz");

I'm trying to add PNG support to my application and thus I want to include libpng. I know it needs zlib and thus I downloaded that as well. I went into the png folder/projects/vstudio and I opened the solution. I compiled it and it went just fine. I added some headers from it into my application and I copied the lib files. My program is a dll written in c++ which is later used from C#. When I run it in C# it complains about not finding my dll (tough if I remove the png part it works fine). I've had this problem before and it usually means a dll dependency is wrong. Now... libpng compiled both