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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 |