| 1 | These classes provide a C++ stream interface to the zlib library. It allows you
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| 2 | to do things like:
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| 3 |
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| 4 | gzofstream outf("blah.gz");
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| 5 | outf << "These go into the gzip file " << 123 << endl;
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| 6 |
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| 7 | It does this by deriving a specialized stream buffer for gzipped files, which is
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| 8 | the way Stroustrup would have done it. :->
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| 9 |
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| 10 | The gzifstream and gzofstream classes were originally written by Kevin Ruland
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| 11 | and made available in the zlib contrib/iostream directory. The older version still
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| 12 | compiles under gcc 2.xx, but not under gcc 3.xx, which sparked the development of
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| 13 | this version.
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| 14 |
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| 15 | The new classes are as standard-compliant as possible, closely following the
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| 16 | approach of the standard library's fstream classes. It compiles under gcc versions
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| 17 | 3.2 and 3.3, but not under gcc 2.xx. This is mainly due to changes in the standard
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| 18 | library naming scheme. The new version of gzifstream/gzofstream/gzfilebuf differs
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| 19 | from the previous one in the following respects:
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| 20 | - added showmanyc
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| 21 | - added setbuf, with support for unbuffered output via setbuf(0,0)
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| 22 | - a few bug fixes of stream behavior
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| 23 | - gzipped output file opened with default compression level instead of maximum level
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| 24 | - setcompressionlevel()/strategy() members replaced by single setcompression()
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| 25 |
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| 26 | The code is provided "as is", with the permission to use, copy, modify, distribute
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| 27 | and sell it for any purpose without fee.
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| 28 |
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| 29 | Ludwig Schwardt
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| 30 | <schwardt@sun.ac.za>
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| 31 |
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| 32 | DSP Lab
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| 33 | Electrical & Electronic Engineering Department
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| 34 | University of Stellenbosch
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| 35 | South Africa
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