include/vfs/fstream.h

   1 //
   2 //  Copyright (C) 2007 by Martin Moracek
   3 //
   4 //  This program is free software; you can redistribute it and/or modify
   5 //  it under the terms of the GNU General Public License as published by
   6 //  the Free Software Foundation; either version 2 of the License, or
   7 //  (at your option) any later version.
   8 //
   9 //  This program is distributed in the hope that it will be useful,
  10 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 //  GNU General Public License for more details.
  13 //
  14 //  You should have received a copy of the GNU General Public License
  15 //  along with this program; if not, write to the Free Software
  16 //  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17 //
  18
  19 /**
  20  *  @file fstream.h
  21  *
  22  *  blablabla
  23  */
  24
  25 #pragma once
  26
  27 #include <stdarg.h>
  28 #include <istream>
  29
  30 #include "types.h"
  31
  32 namespace tre {
  33
  34  /*
  35   *  File stream classes
  36   *
  37   *  names of public methods follow STL naming convention
  38   */
  39   class FileIStream : public std::istream {
  40     public:
  41       FileIStream();
  42       FileIStream(const std::string & filename,
  43         std::ios_base::openmode mode=std::ios_base::binary);
  44       ~FileIStream();
  45
  46       bool open(const std::string & filename,
  47         std::ios_base::openmode mode=std::ios_base::binary);
  48
  49       void close(void);
  50
  51       bool is_open(void) const;
  52
  53       ulong length(void) const;
  54
  55       int iformat(const char * fmt, ...);
  56   };
  57
  58   class FileOStream : public std::ostream {
  59     public:
  60       FileOStream();
  61       FileOStream(const std::string & filename,
  62         std::ios_base::openmode mode=std::ios_base::binary
  63         | std::ios_base::trunc);
  64       ~FileOStream();
  65
  66       bool open(const std::string & filename,
  67         std::ios_base::openmode mode=std::ios_base::binary
  68         | std::ios_base::trunc);
  69
  70       void close(void);
  71
  72       bool is_open(void) const;
  73
  74       ulong length(void) const;
  75
  76       int oformat(const char * fmt, ...);
  77   };
  78
  79   class FileIOStream : public std::iostream {
  80     public:
  81       FileIOStream();
  82       FileIOStream(const std::string & filename,
  83         std::ios_base::openmode mode=std::ios_base::binary
  84         | std::ios_base::in);
  85       ~FileIOStream();
  86
  87       bool open(const std::string & filename,
  88         std::ios_base::openmode mode=std::ios_base::binary
  89         | std::ios_base::in);
  90
  91       void close(void);
  92
  93       bool is_open(void) const;
  94
  95       ulong length(void) const;
  96
  97       int iformat(const char * fmt, ...);
  98       int oformat(const char * fmt, ...);
  99   };
 100
 101   /*
 102    *  FileBuffer interface
 103    */
 104   class FileBuffer : public std::streambuf {
 105     public:
 106       virtual ulong GetSize(void) const = 0;
 107   };
 108
 109 } // vfs