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Diffstat (limited to 'decoder/gzstream.h')
| -rw-r--r-- | decoder/gzstream.h | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/decoder/gzstream.h b/decoder/gzstream.h deleted file mode 100644 index a7effd90..00000000 --- a/decoder/gzstream.h +++ /dev/null @@ -1,127 +0,0 @@ -// ============================================================================ -// gzstream, C++ iostream classes wrapping the zlib compression library. -// Copyright (C) 2001 Deepak Bandyopadhyay, Lutz Kettner -// -// This library is free software; you can redistribute it and/or -// modify it under the terms of the GNU Lesser General Public -// License as published by the Free Software Foundation; either -// version 2.1 of the License, or (at your option) any later version. -// -// This library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -// Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public -// License along with this library; if not, write to the Free Software -// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -// ============================================================================ -// -// File : gzstream.h -// Revision : $Revision: 1.5 $ -// Revision_date : $Date: 2002/04/26 23:30:15 $ -// Author(s) : Deepak Bandyopadhyay, Lutz Kettner -// -// Standard streambuf implementation following Nicolai Josuttis, "The -// Standard C++ Library". -// ============================================================================ - -#ifndef GZSTREAM_H -#define GZSTREAM_H 1 - -// standard C++ with new header file names and std:: namespace -#include <iostream> -#include <fstream> -#include <zlib.h> - -#ifdef GZSTREAM_NAMESPACE -namespace GZSTREAM_NAMESPACE { -#endif - -// ---------------------------------------------------------------------------- -// Internal classes to implement gzstream. See below for user classes. -// ---------------------------------------------------------------------------- - -class gzstreambuf : public std::streambuf { -private: - static const int bufferSize = 47+(1024*256); // size of data buff - // totals 512 bytes under g++ for igzstream at the end. - - gzFile file; // file handle for compressed file - char buffer[bufferSize]; // data buffer - char opened; // open/close state of stream - int mode; // I/O mode - - int flush_buffer(); - void handle_gzerror(); // throws exception -public: -#if defined(_WIN32) && !defined(CYGWIN) && !defined(EOF) - enum { - EOF = -1 - }; -#endif - gzstreambuf() : opened(0) { - setp( buffer, buffer + (bufferSize-1)); - setg( buffer + 4, // beginning of putback area - buffer + 4, // read position - buffer + 4); // end position - // ASSERT: both input & output capabilities will not be used together - } - int is_open() { return opened; } - gzstreambuf* open( const char* name, int open_mode); - gzstreambuf* close(); - ~gzstreambuf() { close(); } - - virtual int overflow( int c = EOF); - virtual int underflow(); - virtual int sync(); -}; - -class gzstreambase : virtual public std::ios { -protected: - gzstreambuf buf; -public: - gzstreambase() { init(&buf); } - gzstreambase( const char* name, int open_mode); - ~gzstreambase(); - void open( const char* name, int open_mode); - void close(); - gzstreambuf* rdbuf() { return &buf; } -}; - -// ---------------------------------------------------------------------------- -// User classes. Use igzstream and ogzstream analogously to ifstream and -// ofstream respectively. They read and write files based on the gz* -// function interface of the zlib. Files are compatible with gzip compression. -// ---------------------------------------------------------------------------- - -class igzstream : public gzstreambase, public std::istream { -public: - igzstream() : std::istream( &buf) {} - igzstream( const char* name, int open_mode = std::ios::in) - : gzstreambase( name, std::ios::in | open_mode), std::istream( &buf) {} - gzstreambuf* rdbuf() { return gzstreambase::rdbuf(); } - void open( const char* name, int open_mode = std::ios::in) { - gzstreambase::open( name, open_mode); - } -}; - -class ogzstream : public gzstreambase, public std::ostream { -public: - ogzstream() : std::ostream( &buf) {} - ogzstream( const char* name, int mode = std::ios::out) - : gzstreambase( name, mode), std::ostream( &buf) {} - gzstreambuf* rdbuf() { return gzstreambase::rdbuf(); } - void open( const char* name, int open_mode = std::ios::out) { - gzstreambase::open( name, open_mode); - } -}; - -#ifdef GZSTREAM_NAMESPACE -} // namespace GZSTREAM_NAMESPACE -#endif - -#endif // GZSTREAM_H -// ============================================================================ -// EOF // - |