include/vfs/console.h

   1 //
   2 //  Copyright (C) 2008 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 console.h
  21  *
  22  *  Ble.
  23  */
  24
  25 #pragma once
  26
  27 #include <string>
  28 #include <iosfwd>
  29 #include <deque>
  30
  31 #include "types.h"
  32
  33 namespace tre {
  34
  35   /** Default size of IO buffers. */
  36   const int defConsoleLines = 80;
  37
  38   class ConsoleBuffer : public std::streambuf {
  39     public:
  40       ConsoleBuffer(uint l) : sq_(l), lines_(l) {}
  41
  42     protected:
  43       // write one character
  44       int overflow(int c);
  45
  46       // write multiple characters
  47       std::streamsize xsputn(const char * s, std::streamsize num);
  48
  49     private:
  50       typedef std::deque<std::string> StringQueue;
  51
  52       StringQueue sq_;
  53       uint lines_;
  54   };
  55
  56   class ConsoleStream : public std::iostream {
  57     public:
  58       static bool ready;
  59
  60     public:
  61       ConsoleStream(uint lines=defConsoleLines);
  62       ~ConsoleStream();
  63
  64       int format(const char * fmt, ...);
  65
  66     private:
  67       ConsoleBuffer buf_;
  68   };
  69
  70   extern ConsoleStream vOut;
  71
  72 }