src/vfs/console.cpp

   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.cpp
  21  *
  22  *  Ble.
  23  */
  24
  25 #include <string.h>
  26 #include <stdarg.h>
  27
  28 #include <string>
  29 #include <istream>
  30 #include <streambuf>
  31 #include <deque>
  32
  33 #include "vfs/console.h"
  34 #include "vfs/vario.h"
  35
  36 namespace tre {
  37
  38   bool ConsoleStream::ready = false;
  39
  40   // write one character
  41   int ConsoleBuffer::overflow(int c)
  42   {
  43     if(c != EOF) {
  44       if(c != '\n') {
  45         sq_.front().push_back(c);
  46       } else {
  47         sq_.push_front(std::string());
  48         sq_.pop_back();
  49       }
  50     }
  51     return c;
  52   }
  53
  54   // write multiple characters
  55   std::streamsize ConsoleBuffer::xsputn(const char * s, std::streamsize num)
  56   {
  57     const char * sptr = s, * eptr;
  58
  59     // split on newlines
  60     while((eptr = strchr(sptr, '\n'))) {
  61       sq_.push_front(std::string(sptr, eptr - sptr));
  62       sq_.pop_back();
  63       sptr = eptr + 1;
  64     }
  65     sq_.push_front(std::string(sptr));
  66     sq_.pop_back();
  67     return strlen(s);
  68   }
  69
  70   ConsoleStream::ConsoleStream(uint lines/*=defConsoleLines*/)
  71     : std::iostream(&buf_), buf_(lines)
  72   {
  73       ready = true;
  74   }
  75
  76   ConsoleStream::~ConsoleStream()
  77   {
  78       ready = false;
  79   }
  80
  81   int ConsoleStream::format(const char * fmt, ...)
  82   {
  83     if(!rdbuf())
  84       return -1;
  85
  86     va_list l_va;
  87     va_start(l_va, fmt);
  88
  89     int t = StreamPrintf(*this, fmt, l_va);
  90
  91     va_end(l_va);
  92     return t;
  93   }
  94 }