/usr/include/ossim/base/ossimGzStream.h is in libossim-dev 1.7.21-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// 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: 13050 $
// Revision_date : $Date: 2008-06-19 20:07:35 +0200(gio, 19 giu 2008) $
// Author(s) : Deepak Bandyopadhyay, Lutz Kettner
//
// Standard streambuf implementation following Nicolai Josuttis, "The
// Standard C++ Library".
// ============================================================================
#ifndef ossimGzStream_HEADER
#define ossimGzStream_HEADER
// standard C++ with new header file names and std:: namespace
#include <ossim/base/ossimReferenced.h>
#include <ossim/base/ossimConstants.h>
#include <ossim/ossimConfig.h>
#include <iostream>
#include <fstream>
#include <ossim/base/ossimIoStream.h>
#if OSSIM_HAS_LIBZ
// ----------------------------------------------------------------------------
// Internal classes to implement gzstream. See below for user classes.
// ----------------------------------------------------------------------------
class OSSIM_DLL ossimGzStreamBuf : public std::streambuf
{
public:
ossimGzStreamBuf();
virtual ~ossimGzStreamBuf();
bool is_open()const;
ossimGzStreamBuf* open( const char* name, int open_mode);
ossimGzStreamBuf* close();
virtual int overflow( int c = EOF);
// will not use buffer for get.
virtual std::streamsize xsgetn(char_type* __s, std::streamsize n);
virtual int underflow();
virtual int sync();
virtual pos_type seekoff(off_type t, std::ios_base::seekdir dir,
std::ios_base::openmode omode = std::ios_base::in |
std::ios_base::out);
/* virtual pos_type seekpos(pos_type posType, */
/* std::ios_base::openmode __mode = std::ios_base::in | */
/* std::ios_base::out); */
private:
struct PrivateData;
int flush_buffer();
static const int bufferSize = 303; // 47+256 size of data buff
// totals 512 bytes under g++ for igzstream at the end.
PrivateData* prvtData;
char buffer[bufferSize]; // data buffer
bool opened; // open/close state of stream
int mode; // I/O mode
}; // End of class ossimGzStreamBuf
/* class OSSIM_DLL ossimGzStreamBase : virtual public ossimProtocolStream */
/* { */
/* protected: */
/* ossimGzStreamBuf buf; */
/* public: */
/* ossimGzStreamBase():ossimProtocolStream(&buf) { } */
/* ossimGzStreamBase( const char* name, int open_mode); */
/* virtual ~ossimGzStreamBase(); */
/* virtual void open( const char* name, int open_mode); */
/* virtual void close(); */
/* ossimGzStreamBuf* rdbuf() { return &buf; } */
/* TYPE_DATA */
/* }; */
//class OSSIM_DLL ossimIgzStream : public ossimGzStreamBase, public std::istream
class OSSIM_DLL ossimIgzStream : public ossimIFStream
{
public:
ossimIgzStream();
ossimIgzStream( const char* name,
std::ios_base::openmode mode = std::ios_base::in);
virtual ~ossimIgzStream();
ossimGzStreamBuf* rdbuf();
virtual void open( const char* name,
std::ios_base::openmode mode = std::ios_base::in);
virtual void close();
virtual bool is_open()const;
virtual bool isCompressed()const;
protected:
ossimGzStreamBuf buf;
}; // End of class ossimIgzStream
class OSSIM_DLL ossimOgzStream : public ossimOFStream
{
public:
ossimOgzStream();
ossimOgzStream( const char* name,
std::ios_base::openmode mode =
std::ios_base::out|std::ios_base::trunc );
virtual ~ossimOgzStream();
ossimGzStreamBuf* rdbuf();
void open( const char* name,
std::ios_base::openmode mode =
std::ios_base::out|std::ios_base::trunc );
virtual void close();
virtual bool is_open()const;
virtual bool isCompressed()const;
protected:
ossimGzStreamBuf buf;
}; // End of class ossimOgzStream
#endif /* #if OSSIM_HAS_LIBZ */
#endif /* #define ossimGzStream_HEADER */
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