src/IO/BinaryWriter.hpp

   1 /*
   2 Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 }
  22 */
  23
  24 #ifndef XCSOAR_IO_BINARY_WRITER_HPP
  25 #define XCSOAR_IO_BINARY_WRITER_HPP
  26
  27 #include "FileHandle.hpp"
  28
  29 #ifdef _UNICODE
  30 #include <tchar.h>
  31 #endif
  32
  33 class BinaryWriter {
  34 protected:
  35   FileHandle file;
  36
  37 public:
  38   /**
  39    * Creates a new file.
  40    * Truncates the old file if it exists, unless the parameter "append" is true.
  41    */
  42   BinaryWriter(const char *path, bool append = false);
  43
  44 #ifdef _UNICODE
  45   BinaryWriter(const TCHAR *path, bool append = false);
  46 #endif
  47
  48   /**
  49    * Returns true if opening the file has failed.  This must be
  50    * checked before calling any other method.
  51    */
  52   bool HasError() const {
  53     return !file.IsOpen();
  54   }
  55
  56   /**
  57    * Ensure that all pending writes have been passed to the operating
  58    * system.  This does not guarantee that these have been written to
  59    * the physical device; they might still reside in the filesystem
  60    * cache.
  61    */
  62   bool Flush() {
  63     return file.Flush();
  64   }
  65
  66   bool Write(const void *s, size_t size, size_t length) {
  67     return file.Write(s, size, length) == length;
  68   }
  69 };
  70
  71 #endif