e765d7ee73
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66630 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
132 lines
3.4 KiB
C++
132 lines
3.4 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/common/ipcbase.cpp
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// Purpose: IPC base classes
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// Author: Julian Smart
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// Modified by:
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// Created: 04/01/98
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// RCS-ID: $Id$
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// Copyright: (c) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#endif
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#include "wx/ipcbase.h"
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wxIMPLEMENT_ABSTRACT_CLASS(wxServerBase, wxObject)
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wxIMPLEMENT_ABSTRACT_CLASS(wxClientBase, wxObject)
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wxIMPLEMENT_ABSTRACT_CLASS(wxConnectionBase, wxObject)
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wxConnectionBase::wxConnectionBase(void *buffer, size_t bytes)
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: m_buffer((char *)buffer),
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m_buffersize(bytes),
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m_deletebufferwhendone(false),
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m_connected(true)
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{
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if ( buffer == NULL )
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{ // behave like next constructor
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m_buffersize = 0;
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m_deletebufferwhendone = true;
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}
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}
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wxConnectionBase::wxConnectionBase()
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: m_buffer(NULL),
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m_buffersize(0),
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m_deletebufferwhendone(true),
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m_connected(true)
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{
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}
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wxConnectionBase::wxConnectionBase(const wxConnectionBase& copy)
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: wxObject(),
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m_buffer(copy.m_buffer),
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m_buffersize(copy.m_buffersize),
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m_deletebufferwhendone(false),
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m_connected(copy.m_connected)
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{
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// copy constructor would require ref-counted pointer to buffer
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wxFAIL_MSG( wxT("Copy constructor of wxConnectionBase not implemented") );
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}
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wxConnectionBase::~wxConnectionBase()
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{
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if ( m_deletebufferwhendone )
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delete [] m_buffer;
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}
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/* static */
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wxString wxConnectionBase::GetTextFromData(const void* data,
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size_t size,
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wxIPCFormat fmt)
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{
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wxString s;
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switch ( fmt )
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{
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case wxIPC_TEXT:
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// normally the string should be NUL-terminated and size should
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// include the total size of the buffer, including NUL -- but don't
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// crash (by trying to access (size_t)-1 bytes) if it doesn't
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if ( size )
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size--;
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s = wxString(static_cast<const char *>(data), size);
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break;
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#if wxUSE_UNICODE
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// TODO: we should handle both wxIPC_UTF16TEXT and wxIPC_UTF32TEXT here
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// for inter-platform IPC
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case wxIPC_UNICODETEXT:
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wxASSERT_MSG( !(size % sizeof(wchar_t)), "invalid buffer size" );
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if ( size )
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{
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size /= sizeof(wchar_t);
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size--;
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}
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s = wxString(static_cast<const wchar_t *>(data), size);
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break;
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case wxIPC_UTF8TEXT:
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if ( size )
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size--;
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s = wxString::FromUTF8(static_cast<const char *>(data), size);
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break;
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#endif // wxUSE_UNICODE
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default:
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wxFAIL_MSG( "non-string IPC format in GetTextFromData()" );
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}
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return s;
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}
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void *wxConnectionBase::GetBufferAtLeast( size_t bytes )
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{
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if ( m_buffersize >= bytes )
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return m_buffer;
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else
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{ // need to resize buffer
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if ( m_deletebufferwhendone )
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{ // we're in charge of buffer, increase it
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delete [] m_buffer;
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m_buffer = new char[bytes];
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m_buffersize = bytes;
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return m_buffer;
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} // user-supplied buffer, fail
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else
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return NULL;
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}
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}
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