To cross compile openSHH for ARM (in my case a mini2440) I did following: Install arm cross compiler – (eg. what is arm-linux-gcc and how to install this in ubuntu) Download: Zlib OpenSSL OpenSSH Build Zlib: cd zlib-1.2.7 CC=arm-linux-gnueabi-gcc ./configure –prefix=$HOME/zlibArm make make install Build OpenSSL: export cross=arm-linux-gnueabi- cd openssl-1.0.1c ./Configure dist –prefix=$HOME/opensslArm make CC=”${cross}gcc” … Read more
John Reiser explained on comp.compression: For the dictionary: make a histogram of short substrings, sort by payoff (number of occurrences times number of bits saved when compressed) and put the highest-payoff substrings into the dictionary. For example, if k is the length of the shortest substring that can be compressed (usually 3==k or 2==k), then … Read more
The issue with the gzip module is not that it can’t decompress the partial file, the error occurs only at the end when it tries to verify the checksum of the decompressed content. (The original checksum is stored at the end of the compressed file so the verification will never, ever work with a partial … Read more
If you want to use 8-bit strings instead of unicode string in sqlite3, set appropriate text_factory for sqlite connection: connection = sqlite3.connect(…) connection.text_factory = str
You don’t want zlibc, it’s something else completely. You want zlib1g (which will certainly be installed already) and, as Luper mentioned, the ‘development’ package which is zlib1g-dev. Debian-based Linux distros split each C library into a separate runtime binary package and a development package which delivers the headers for inclusion at compile time. If you … Read more
zlib is contained in the core Qt libraries. If you want to use the zlib functions in a Qt program, you only have to include zlib.h which is in src/3rdparty/zlib. See e.g. the implementation of QByteArray in src/corelib/tools. If you want to use quazip, just add the library to your project. It is based on … Read more
Pako is a full and modern Zlib port. Here is a very simple example and you can work from there. Get pako.js and you can decompress byteArray like so: <html> <head> <title>Gunzipping binary gzipped string</title> <script type=”text/javascript” src=”https://stackoverflow.com/questions/4507316/pako.js”></script> <script type=”text/javascript”> // Get datastream as Array, for example: var charData = [31,139,8,0,0,0,0,0,0,3,5,193,219,13,0,16,16,4,192,86,214,151,102,52,33,110,35,66,108,226,60,218,55,147,164,238,24,173,19,143,241,18,85,27,58,203,57,46,29,25,198,34,163,193,247,106,179,134,15,50,167,173,148,48,0,0,0]; // Turn number array … Read more
There is a magic number at the beginning of the file. Just read the first two bytes and check if they are equal to 0x1f8b.
zlib handles the deflate compression/decompression algorithm, but there is more than that in a ZIP file. You can try libzip. It is free, portable and easy to use. UPDATE: Here I attach quick’n’dirty example of libzip, with all the error controls ommited: #include <zip.h> int main() { //Open the ZIP archive int err = 0; … Read more
gzip and zlib use slightly different headers. See How can I decompress a gzip stream with zlib? Try d = zlib.decompressobj(16+zlib.MAX_WBITS). And you might try changing your chunk size to a power of 2 (say CHUNKSIZE=1024) for possible performance reasons.