src/Util/EscapeBackslash.cpp

   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 #include "EscapeBackslash.hpp"
  25
  26 #include <string.h>
  27
  28 TCHAR *
  29 UnescapeBackslash(const TCHAR* old_string)
  30 {
  31   TCHAR buffer[2048]; // Note - max size of any string we cope with here !
  32
  33   unsigned int used = 0;
  34
  35   for (unsigned int i = 0; i < _tcslen(old_string); i++) {
  36     if (used < 2045) {
  37       if (old_string[i] == '\\') {
  38         if (old_string[i + 1] == 'r') {
  39           buffer[used++] = '\r';
  40           i++;
  41         } else if (old_string[i + 1] == 'n') {
  42           buffer[used++] = '\n';
  43           i++;
  44         } else if (old_string[i + 1] == '\\') {
  45           buffer[used++] = '\\';
  46           i++;
  47         } else {
  48           buffer[used++] = old_string[i];
  49         }
  50       } else {
  51         buffer[used++] = old_string[i];
  52       }
  53     }
  54   }
  55
  56   buffer[used++] = _T('\0');
  57
  58   return _tcsdup(buffer);
  59 }