src/Util/ConvertString.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 "ConvertString.hpp"
  25
  26 #ifdef _UNICODE
  27 #include <windows.h>
  28
  29 static TCHAR *
  30 ConvertToWide(const char *p, UINT codepage)
  31 {
  32   assert(p != nullptr);
  33
  34   int length = MultiByteToWideChar(codepage, 0, p, -1, nullptr, 0);
  35   if (length <= 0)
  36     return nullptr;
  37
  38   TCHAR *buffer = new TCHAR[length];
  39   length = MultiByteToWideChar(codepage, 0, p, -1, buffer, length);
  40   if (length <= 0) {
  41     delete[] buffer;
  42     return nullptr;
  43   }
  44
  45   return buffer;
  46 }
  47
  48 TCHAR *
  49 ConvertUTF8ToWide(const char *p)
  50 {
  51   assert(p != nullptr);
  52
  53   return ConvertToWide(p, CP_UTF8);
  54 }
  55
  56 TCHAR *
  57 ConvertACPToWide(const char *p)
  58 {
  59   assert(p != nullptr);
  60
  61   return ConvertToWide(p, CP_ACP);
  62 }
  63
  64 static char *
  65 ConvertFromWide(const TCHAR *p, UINT codepage)
  66 {
  67   assert(p != nullptr);
  68
  69   int length = WideCharToMultiByte(codepage, 0, p, -1, nullptr, 0,
  70                                    nullptr, nullptr);
  71   if (length <= 0)
  72     return nullptr;
  73
  74   char *buffer = new char[length];
  75   length = WideCharToMultiByte(codepage, 0, p, -1, buffer, length,
  76                                nullptr, nullptr);
  77   if (length <= 0) {
  78     delete[] buffer;
  79     return nullptr;
  80   }
  81
  82   return buffer;
  83 }
  84
  85 char *
  86 ConvertWideToUTF8(const TCHAR *p)
  87 {
  88   assert(p != nullptr);
  89
  90   return ConvertFromWide(p, CP_UTF8);
  91 }
  92
  93 char *
  94 ConvertWideToACP(const TCHAR *p)
  95 {
  96   assert(p != nullptr);
  97
  98   return ConvertFromWide(p, CP_ACP);
  99 }
 100
 101 #endif