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
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  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_connected(TRUE),
  35       m_buffer(buffer),
  36       m_buffersize(size),
  37       m_deletebufferwhendone(FALSE)
  38 {
  39   if ( buffer == (wxChar *)NULL )
  40   { // behave like next constructor
  41     m_buffersize = 0;
  42     m_deletebufferwhendone = TRUE;
  43   }
  44 }
  45
  46 wxConnectionBase::wxConnectionBase()
  47     : m_connected(TRUE),
  48       m_buffer(NULL),
  49       m_buffersize(0),
  50       m_deletebufferwhendone(TRUE)
  51 {
  52 }
  53
  54 wxConnectionBase::wxConnectionBase(wxConnectionBase& copy)
  55     : m_connected(copy.m_connected),
  56       m_buffer(copy.m_buffer),
  57       m_buffersize(copy.m_buffersize),
  58       m_deletebufferwhendone(FALSE)
  59
  60 {
  61   // copy constructor would require ref-counted pointer to buffer
  62   wxFAIL_MSG( _T("Copy constructor of wxConnectionBase not implemented") );
  63 }
  64
  65
  66 wxConnectionBase::~wxConnectionBase(void)
  67 {
  68   if ( m_deletebufferwhendone && m_buffer )
  69    delete m_buffer;
  70 }
  71
  72 wxChar *wxConnectionBase::GetBufferAtLeast( size_t bytes )
  73 {
  74   if ( m_buffersize >= bytes )
  75     return m_buffer;
  76   else
  77   {  // need to resize buffer
  78     if ( m_deletebufferwhendone )
  79     { // we're in charge of buffer, increase it
  80       if ( m_buffer )
  81         delete m_buffer;
  82       m_buffer = new wxChar[bytes];
  83       m_buffersize = bytes;
  84       return m_buffer;
  85     } // user-supplied buffer, fail
  86     else
  87       return NULL;
  88   }
  89 }
  90