src/common/ipcbase.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        ipcbase.cpp
   3 // Purpose:     IPC base classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "ipcbase.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/defs.h"
  25 #endif
  26
  27 #include "wx/ipcbase.h"
  28
  29 IMPLEMENT_CLASS(wxServerBase, wxObject)
  30 IMPLEMENT_CLASS(wxClientBase, wxObject)
  31 IMPLEMENT_CLASS(wxConnectionBase, wxObject)
  32
  33 wxConnectionBase::wxConnectionBase(wxChar *buffer, int size)
  34   : m_buffer(buffer), m_buffersize(size),
  35     m_deletebufferwhendone(false), m_connected(true)
  36 {
  37   if ( buffer == (wxChar *)NULL )
  38   { // behave like next constructor
  39     m_buffersize = 0;
  40     m_deletebufferwhendone = true;
  41   }
  42 }
  43
  44 wxConnectionBase::wxConnectionBase()
  45   : m_buffersize(0), m_buffer(NULL), m_deletebufferwhendone(true),
  46     m_connected(true)
  47 {
  48 }
  49
  50 wxConnectionBase::wxConnectionBase(wxConnectionBase& copy)
  51   : m_buffer(copy.m_buffer), m_buffersize(copy.m_buffersize),
  52     m_deletebufferwhendone(false), m_connected(copy.m_connected)
  53 {
  54   // copy constructor would require ref-counted pointer to buffer
  55   wxFAIL_MSG( _T("Copy constructor of wxConnectionBase not implemented") );
  56 }
  57
  58
  59 wxConnectionBase::~wxConnectionBase(void)
  60 {
  61   if ( m_deletebufferwhendone && m_buffer )
  62    delete m_buffer;
  63 }
  64
  65 wxChar *wxConnectionBase::GetBufferAtLeast( size_t bytes )
  66 {
  67   if ( m_buffersize >= bytes )
  68     return m_buffer;
  69   else
  70   {  // need to resize buffer
  71     if ( m_deletebufferwhendone )
  72     { // we're in charge of buffer, increase it
  73       if ( !m_buffer )
  74         delete m_buffer;
  75       m_buffer = new wxChar[bytes];
  76       m_buffersize = bytes;
  77       return m_buffer;
  78     } // user-supplied buffer, fail
  79     else
  80       return NULL;
  81   }
  82 }
  83