mDNSWindows/DLL.NET/PString.h

   1 /* -*- Mode: C; tab-width: 4 -*-
   2  *
   3  * Copyright (c) 2003-2004 Apple Computer, Inc. All rights reserved.
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16
  17     Change History (most recent first):
  18
  19 $Log: PString.h,v $
  20 Revision 1.3  2006/08/14 23:25:43  cheshire
  21 Re-licensed mDNSResponder daemon source code under Apache License, Version 2.0
  22
  23 Revision 1.2  2004/07/19 16:08:56  shersche
  24 fix problems in UTF8/Unicode string translations
  25
  26 Revision 1.1  2004/06/26 04:01:22  shersche
  27 Initial revision
  28
  29
  30  */
  31
  32 #pragma once
  33
  34 using namespace System;
  35 using namespace System::Text;
  36
  37 namespace Apple
  38 {
  39         __gc class PString
  40         {
  41         public:
  42
  43                 PString(String* string)
  44                 {
  45                         if (string != NULL)
  46                         {
  47                                 Byte unicodeBytes[] = Encoding::Unicode->GetBytes(string);
  48                                 Byte utf8Bytes[] = Encoding::Convert(Encoding::Unicode, Encoding::UTF8, unicodeBytes);
  49                                 m_p = Marshal::AllocHGlobal(utf8Bytes->Length + 1);
  50
  51                                 Byte __pin * p = &utf8Bytes[0];
  52                                 char * hBytes = static_cast<char*>(m_p.ToPointer());
  53                                 memcpy(hBytes, p, utf8Bytes->Length);
  54                                 hBytes[utf8Bytes->Length] = '\0';
  55                         }
  56                         else
  57                         {
  58                                 m_p = NULL;
  59                         }
  60                 }
  61
  62                 ~PString()
  63                 {
  64                         Marshal::FreeHGlobal(m_p);
  65                 }
  66
  67                 const char*
  68                 c_str()
  69                 {
  70                         if (m_p != NULL)
  71                         {
  72                                 return static_cast<const char*>(m_p.ToPointer());
  73                         }
  74                         else
  75                         {
  76                                 return NULL;
  77                         }
  78                 }
  79
  80         protected:
  81
  82                 IntPtr m_p;
  83         };
  84 }