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
  18 #pragma once
  19
  20 using namespace System;
  21 using namespace System::Text;
  22
  23 namespace Apple
  24 {
  25         __gc class PString
  26         {
  27         public:
  28
  29                 PString(String* string)
  30                 {
  31                         if (string != NULL)
  32                         {
  33                                 Byte unicodeBytes[] = Encoding::Unicode->GetBytes(string);
  34                                 Byte utf8Bytes[] = Encoding::Convert(Encoding::Unicode, Encoding::UTF8, unicodeBytes);
  35                                 m_p = Marshal::AllocHGlobal(utf8Bytes->Length + 1);
  36
  37                                 Byte __pin * p = &utf8Bytes[0];
  38                                 char * hBytes = static_cast<char*>(m_p.ToPointer());
  39                                 memcpy(hBytes, p, utf8Bytes->Length);
  40                                 hBytes[utf8Bytes->Length] = '\0';
  41                         }
  42                         else
  43                         {
  44                                 m_p = NULL;
  45                         }
  46                 }
  47
  48                 ~PString()
  49                 {
  50                         Marshal::FreeHGlobal(m_p);
  51                 }
  52
  53                 const char*
  54                 c_str()
  55                 {
  56                         if (m_p != NULL)
  57                         {
  58                                 return static_cast<const char*>(m_p.ToPointer());
  59                         }
  60                         else
  61                         {
  62                                 return NULL;
  63                         }
  64                 }
  65
  66         protected:
  67
  68                 IntPtr m_p;
  69         };
  70 }