1These classes provide a C++ stream interface to the zlib library. It allows you 2to do things like: 3 4 gzofstream outf("blah.gz"); 5 outf << "These go into the gzip file " << 123 << endl; 6 7It does this by deriving a specialized stream buffer for gzipped files, which is 8the way Stroustrup would have done it. :-> 9 10The gzifstream and gzofstream classes were originally written by Kevin Ruland 11and made available in the zlib contrib/iostream directory. The older version still 12compiles under gcc 2.xx, but not under gcc 3.xx, which sparked the development of 13this version. 14 15The new classes are as standard-compliant as possible, closely following the 16approach of the standard library's fstream classes. It compiles under gcc versions 173.2 and 3.3, but not under gcc 2.xx. This is mainly due to changes in the standard 18library naming scheme. The new version of gzifstream/gzofstream/gzfilebuf differs 19from the previous one in the following respects: 20- added showmanyc 21- added setbuf, with support for unbuffered output via setbuf(0,0) 22- a few bug fixes of stream behavior 23- gzipped output file opened with default compression level instead of maximum level 24- setcompressionlevel()/strategy() members replaced by single setcompression() 25 26The code is provided "as is", with the permission to use, copy, modify, distribute 27and sell it for any purpose without fee. 28 29Ludwig Schwardt 30<schwardt@sun.ac.za> 31 32DSP Lab 33Electrical & Electronic Engineering Department 34University of Stellenbosch 35South Africa 36