4f4c5fcfdf
This is a combination of running clang-tidy with modernize-use-nullptr check for some ports (GTK, X11, OSX) and manual changes to the ports for which it couldn't be used easily (MSW, DFB) and also manually updating the docs. Also replace NULL with null or nullptr in the comments as this is more consistent with the use of nullptr in the code and makes it simpler to grep for the remaining occurrences of NULL itself. And also use null in the assert messages. Only a few occurrences of "NULL" are still left in non-C files, mostly corresponding to unclear comments or string output which it might not be safe to change.
388 lines
11 KiB
C++
388 lines
11 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: server.cpp
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// Purpose: IPC sample: server
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// Author: Julian Smart
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// Modified by: Jurgen Doornik
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// Created: 25/01/99
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// Copyright: (c) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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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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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#endif
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// Settings common to both executables: determines whether
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// we're using TCP/IP or real DDE.
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#include "ipcsetup.h"
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#ifndef wxHAS_IMAGES_IN_RESOURCES
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#include "../sample.xpm"
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#endif
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#include "server.h"
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#include "wx/textdlg.h"
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#include "wx/datetime.h"
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// ----------------------------------------------------------------------------
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// wxWin macros
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// ----------------------------------------------------------------------------
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wxIMPLEMENT_APP(MyApp);
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wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
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EVT_CLOSE( MyFrame::OnClose )
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EVT_BUTTON( ID_START, MyFrame::OnStart )
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EVT_CHOICE( ID_SERVERNAME, MyFrame::OnServerName )
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EVT_BUTTON( ID_DISCONNECT, MyFrame::OnDisconnect )
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EVT_BUTTON( ID_ADVISE, MyFrame::OnAdvise )
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wxEND_EVENT_TABLE()
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// MyApp
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// ----------------------------------------------------------------------------
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bool MyApp::OnInit()
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{
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if ( !wxApp::OnInit() )
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return false;
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// Create the main frame window
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m_frame = new MyFrame(nullptr, "Server");
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m_frame->Show(true);
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return true;
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}
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// ----------------------------------------------------------------------------
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// MyFrame
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// ----------------------------------------------------------------------------
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// Define my frame constructor
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MyFrame::MyFrame(wxFrame *frame, const wxString& title)
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: wxFrame(frame, wxID_ANY, title, wxDefaultPosition, wxSize(400, 300))
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{
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#if wxUSE_STATUSBAR
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CreateStatusBar();
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#endif // wxUSE_STATUSBAR
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SetIcon(wxICON(sample));
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m_server = nullptr;
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wxPanel * const panel = new wxPanel(this);
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wxBoxSizer * const sizerMain = new wxBoxSizer( wxVERTICAL );
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wxFlexGridSizer * const sizerCmds = new wxFlexGridSizer( 2, 0, 0 );
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sizerCmds->AddGrowableCol( 1 );
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wxButton *btn;
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btn = new wxButton(panel, ID_START, "&Start Server");
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sizerCmds->Add(btn, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);
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const wxString choices[] = { IPC_SERVICE, "..." };
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wxChoice * const choice = new wxChoice
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(
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panel,
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ID_SERVERNAME,
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wxDefaultPosition, wxSize(100, -1),
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WXSIZEOF(choices), choices
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);
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sizerCmds->Add(choice, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);
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btn = new wxButton(panel, ID_DISCONNECT, "&Disconnect Client");
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sizerCmds->Add(btn, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);
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sizerCmds->AddSpacer(20);
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btn = new wxButton( panel, ID_ADVISE, "&Advise");
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sizerCmds->Add(btn, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);
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sizerCmds->AddSpacer(20);
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sizerMain->Add(sizerCmds, wxSizerFlags().Expand().Border(wxALL, 5));
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wxStaticBoxSizer * const
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sizerLog = new wxStaticBoxSizer(wxVERTICAL, panel, "Server &log");
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wxTextCtrl * const textLog = new wxTextCtrl
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(
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panel,
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wxID_ANY,
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"",
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wxDefaultPosition, wxSize(500, 140),
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wxTE_MULTILINE
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);
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sizerLog->Add(textLog, wxSizerFlags(1).Expand().Border(wxALL, 5));
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sizerMain->Add(sizerLog, wxSizerFlags(1).Expand().Border(wxALL, 5));
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panel->SetSizer(sizerMain);
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sizerMain->SetSizeHints(panel);
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SetClientSize(panel->GetSize());
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GetServername()->SetSelection(0);
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wxLogTextCtrl *logWindow = new wxLogTextCtrl(textLog);
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delete wxLog::SetActiveTarget(logWindow);
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wxLogMessage("Click on Start to start the server");
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UpdateUI();
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}
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void MyFrame::UpdateUI()
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{
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GetStart()->Enable(m_server == nullptr);
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GetServername()->Enable(m_server == nullptr);
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GetAdvise()->Enable(m_server && m_server->CanAdvise());
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GetDisconnect()->Enable(m_server && m_server->IsConnected());
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}
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void MyFrame::OnClose(wxCloseEvent& event)
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{
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wxDELETE(m_server);
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event.Skip();
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}
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void MyFrame::OnStart(wxCommandEvent& WXUNUSED(event))
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{
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// Create a new server
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m_server = new MyServer;
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wxString servername = GetServername()->GetStringSelection();
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if (m_server->Create(servername))
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{
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wxLogMessage("Server %s started", servername);
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#if wxUSE_DDE_FOR_IPC
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wxLogMessage("Server uses DDE");
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#else // !wxUSE_DDE_FOR_IPC
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wxLogMessage("Server uses TCP");
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#endif // wxUSE_DDE_FOR_IPC/!wxUSE_DDE_FOR_IPC
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}
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else
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{
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wxLogMessage("Server %s failed to start", servername);
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wxDELETE(m_server);
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}
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UpdateUI();
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}
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void MyFrame::OnServerName( wxCommandEvent& WXUNUSED(event) )
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{
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if ( GetServername()->GetStringSelection() == "..." )
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{
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wxString s = wxGetTextFromUser
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(
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"Specify the name of the server",
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"Server Name",
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"",
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this
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);
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if ( !s.empty() && s != IPC_SERVICE )
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{
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GetServername()->Insert(s, 0);
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GetServername()->SetSelection(0);
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}
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}
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}
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void MyFrame::Disconnect()
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{
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m_server->Disconnect();
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UpdateUI();
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}
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void MyFrame::OnDisconnect(wxCommandEvent& WXUNUSED(event))
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{
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Disconnect();
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}
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void MyFrame::OnAdvise(wxCommandEvent& WXUNUSED(event))
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{
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m_server->Advise();
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}
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// ----------------------------------------------------------------------------
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// MyServer
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// ----------------------------------------------------------------------------
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MyServer::MyServer() : wxServer()
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{
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m_connection = nullptr;
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}
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MyServer::~MyServer()
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{
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Disconnect();
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}
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wxConnectionBase *MyServer::OnAcceptConnection(const wxString& topic)
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{
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wxLogMessage("OnAcceptConnection(\"%s\")", topic);
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if ( topic == IPC_TOPIC )
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{
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m_connection = new MyConnection();
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wxGetApp().GetFrame()->UpdateUI();
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wxLogMessage("Connection accepted");
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return m_connection;
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}
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//else: unknown topic
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wxLogMessage("Unknown topic, connection refused");
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return nullptr;
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}
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void MyServer::Disconnect()
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{
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if ( m_connection )
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{
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wxDELETE(m_connection);
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wxGetApp().GetFrame()->UpdateUI();
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wxLogMessage("Disconnected client");
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}
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}
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void MyServer::Advise()
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{
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if ( CanAdvise() )
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{
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const wxDateTime now = wxDateTime::Now();
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wxString str = wxString::FromUTF8("\xd0\x9f\xd1\x80\xd0\xb8\xd0\xb2\xd0\xb5\xd1\x82");
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m_connection->Advise(m_connection->m_advise, str + " (using UTF-8)");
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str += " (using wchar_t)";
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m_connection->Advise(m_connection->m_advise,
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str.wc_str(), (str.length() + 1)*sizeof(wchar_t),
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wxIPC_UNICODETEXT);
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// This one uses wxIPC_TEXT by default.
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const wxString s = now.FormatTime() + " " + now.FormatDate();
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m_connection->Advise(m_connection->m_advise, s.mb_str(), wxNO_LEN);
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char bytes[3] = { '1', '2', '3' };
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m_connection->Advise(m_connection->m_advise, bytes, 3, wxIPC_PRIVATE);
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}
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}
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// ----------------------------------------------------------------------------
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// MyConnection
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// ----------------------------------------------------------------------------
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bool
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MyConnection::OnExecute(const wxString& topic,
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const void *data,
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size_t size,
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wxIPCFormat format)
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{
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Log("OnExecute", topic, "", data, size, format);
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return true;
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}
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bool
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MyConnection::OnPoke(const wxString& topic,
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const wxString& item,
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const void *data,
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size_t size,
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wxIPCFormat format)
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{
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Log("OnPoke", topic, item, data, size, format);
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return wxConnection::OnPoke(topic, item, data, size, format);
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}
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const void *
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MyConnection::OnRequest(const wxString& topic,
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const wxString& item,
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size_t *size,
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wxIPCFormat format)
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{
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*size = 0;
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wxString s,
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afterDate;
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if ( item.StartsWith("Date", &afterDate) )
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{
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const wxDateTime now = wxDateTime::Now();
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if ( afterDate.empty() )
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{
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s = now.Format();
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*size = wxNO_LEN;
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}
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else if ( afterDate == "+len" )
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{
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s = now.FormatTime() + " " + now.FormatDate();
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*size = strlen(s.mb_str()) + 1;
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}
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}
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else if ( item == "bytes[3]" )
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{
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s = "123";
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*size = 3;
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}
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if ( !*size )
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{
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wxLogMessage("Unknown request for \"%s\"", item);
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return nullptr;
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}
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// store the data pointer to which we return in a member variable to ensure
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// that the pointer remains valid even after we return
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m_requestData = s.mb_str();
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const void * const data = m_requestData;
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Log("OnRequest", topic, item, data, *size, format);
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return data;
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}
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bool MyConnection::OnStartAdvise(const wxString& topic, const wxString& item)
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{
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wxLogMessage("OnStartAdvise(\"%s\", \"%s\")", topic, item);
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wxLogMessage("Returning true");
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m_advise = item;
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wxGetApp().GetFrame()->UpdateUI();
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return true;
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}
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bool MyConnection::OnStopAdvise(const wxString& topic, const wxString& item)
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{
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wxLogMessage("OnStopAdvise(\"%s\",\"%s\")", topic, item);
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wxLogMessage("Returning true");
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m_advise.clear();
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wxGetApp().GetFrame()->UpdateUI();
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return true;
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}
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bool
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MyConnection::DoAdvise(const wxString& item,
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const void *data,
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size_t size,
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wxIPCFormat format)
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{
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Log("Advise", "", item, data, size, format);
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return wxConnection::DoAdvise(item, data, size, format);
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}
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bool MyConnection::OnDisconnect()
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{
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wxLogMessage("OnDisconnect()");
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wxGetApp().GetFrame()->Disconnect();
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return true;
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}
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