X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/aec18ff785687e1d0830da8cd287903128a994c6..0edfdd963bdc9cfeb54d403ed77b5f36e4de8c84:/samples/exec/exec.cpp diff --git a/samples/exec/exec.cpp b/samples/exec/exec.cpp index e59f3f3326..3a30eff6de 100644 --- a/samples/exec/exec.cpp +++ b/samples/exec/exec.cpp @@ -17,11 +17,6 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ - #pragma implementation "exec.cpp" - #pragma interface "exec.cpp" -#endif - // For compilers that support precompilation, includes "wx/wx.h". #include "wx/wxprec.h" @@ -30,10 +25,14 @@ #endif // for all others, include the necessary headers (this file is usually all you -// need because it includes almost all "standard" wxWindows headers +// need because it includes almost all "standard" wxWidgets headers #ifndef WX_PRECOMP #include "wx/app.h" + #include "wx/log.h" #include "wx/frame.h" + #include "wx/panel.h" + + #include "wx/timer.h" #include "wx/utils.h" #include "wx/menu.h" @@ -51,6 +50,8 @@ #endif #include "wx/txtstrm.h" +#include "wx/numdlg.h" +#include "wx/ffile.h" #include "wx/process.h" @@ -79,7 +80,7 @@ public: // Define an array of process pointers used by MyFrame class MyPipedProcess; -WX_DEFINE_ARRAY(MyPipedProcess *, MyProcessesArray); +WX_DEFINE_ARRAY_PTR(MyPipedProcess *, MyProcessesArray); // Define a new frame type: this is going to be our main frame class MyFrame : public wxFrame @@ -108,6 +109,7 @@ public: void OnAbout(wxCommandEvent& event); // polling output of async processes + void OnTimer(wxTimerEvent& event); void OnIdle(wxIdleEvent& event); // for MyPipedProcess @@ -121,6 +123,31 @@ private: void DoAsyncExec(const wxString& cmd); + void AddAsyncProcess(MyPipedProcess *process) + { + if ( m_running.IsEmpty() ) + { + // we want to start getting the timer events to ensure that a + // steady stream of idle events comes in -- otherwise we + // wouldn't be able to poll the child process input + m_timerIdleWakeUp.Start(100); + } + //else: the timer is already running + + m_running.Add(process); + } + + void RemoveAsyncProcess(MyPipedProcess *process) + { + m_running.Remove(process); + + if ( m_running.IsEmpty() ) + { + // we don't need to get idle events all the time any more + m_timerIdleWakeUp.Stop(); + } + } + // the PID of the last process we launched asynchronously long m_pidLast; @@ -143,7 +170,10 @@ private: MyProcessesArray m_running; - // any class wishing to process wxWindows events must use this macro + // the idle event wake up timer + wxTimer m_timerIdleWakeUp; + + // any class wishing to process wxWidgets events must use this macro DECLARE_EVENT_TABLE() }; @@ -159,23 +189,44 @@ public: wxProcess *process); protected: - void OnTextEnter(wxCommandEvent& event) { DoSend(); } - void OnBtnSend(wxCommandEvent& event) { DoSend(); } - void OnBtnGet(wxCommandEvent& event) { DoGet(); } + void OnTextEnter(wxCommandEvent& WXUNUSED(event)) { DoSend(); } + void OnBtnSend(wxCommandEvent& WXUNUSED(event)) { DoSend(); } + void OnBtnSendFile(wxCommandEvent& WXUNUSED(event)); + void OnBtnGet(wxCommandEvent& WXUNUSED(event)) { DoGet(); } + void OnBtnClose(wxCommandEvent& WXUNUSED(event)) { DoClose(); } void OnClose(wxCloseEvent& event); - void DoSend() { m_out.WriteString(m_textIn->GetValue() + '\n'); DoGet(); } + void OnProcessTerm(wxProcessEvent& event); + + void DoSend() + { + wxString s(m_textOut->GetValue()); + s += _T('\n'); + m_out.Write(s.c_str(), s.length()); + m_textOut->Clear(); + + DoGet(); + } + void DoGet(); + void DoClose(); private: + void DoGetFromStream(wxTextCtrl *text, wxInputStream& in); + void DisableInput(); + void DisableOutput(); + + wxProcess *m_process; - wxTextInputStream m_in; - wxTextOutputStream m_out; + wxOutputStream &m_out; + wxInputStream &m_in, + &m_err; - wxTextCtrl *m_textIn, - *m_textOut; + wxTextCtrl *m_textOut, + *m_textIn, + *m_textErr; DECLARE_EVENT_TABLE() }; @@ -259,16 +310,18 @@ enum // control ids Exec_Btn_Send = 1000, - Exec_Btn_Get + Exec_Btn_SendFile, + Exec_Btn_Get, + Exec_Btn_Close }; static const wxChar *DIALOG_TITLE = _T("Exec sample"); // ---------------------------------------------------------------------------- -// event tables and other macros for wxWindows +// event tables and other macros for wxWidgets // ---------------------------------------------------------------------------- -// the event tables connect the wxWindows events with the functions (event +// the event tables connect the wxWidgets events with the functions (event // handlers) which process them. It can be also done at run-time, but for the // simple menu events like this the static method is much simpler. BEGIN_EVENT_TABLE(MyFrame, wxFrame) @@ -294,18 +347,24 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame) EVT_MENU(Exec_About, MyFrame::OnAbout) EVT_IDLE(MyFrame::OnIdle) + + EVT_TIMER(wxID_ANY, MyFrame::OnTimer) END_EVENT_TABLE() BEGIN_EVENT_TABLE(MyPipeFrame, wxFrame) EVT_BUTTON(Exec_Btn_Send, MyPipeFrame::OnBtnSend) + EVT_BUTTON(Exec_Btn_SendFile, MyPipeFrame::OnBtnSendFile) EVT_BUTTON(Exec_Btn_Get, MyPipeFrame::OnBtnGet) + EVT_BUTTON(Exec_Btn_Close, MyPipeFrame::OnBtnClose) - EVT_TEXT_ENTER(-1, MyPipeFrame::OnTextEnter) + EVT_TEXT_ENTER(wxID_ANY, MyPipeFrame::OnTextEnter) EVT_CLOSE(MyPipeFrame::OnClose) + + EVT_END_PROCESS(wxID_ANY, MyPipeFrame::OnProcessTerm) END_EVENT_TABLE() -// Create a new application object: this macro will allow wxWindows to create +// Create a new application object: this macro will allow wxWidgets to create // the application object during program execution (it's better than using a // static object for many reasons) and also declares the accessor function // wxGetApp() which will return the reference of the right type (i.e. MyApp and @@ -324,26 +383,31 @@ IMPLEMENT_APP(MyApp) bool MyApp::OnInit() { // Create the main application window - MyFrame *frame = new MyFrame(_T("Exec wxWindows sample"), + MyFrame *frame = new MyFrame(_T("Exec wxWidgets sample"), wxDefaultPosition, wxSize(500, 140)); // Show it and tell the application that it's our main window - frame->Show(TRUE); + frame->Show(true); SetTopWindow(frame); // success: wxApp::OnRun() will be called which will enter the main message - // loop and the application will run. If we returned FALSE here, the + // loop and the application will run. If we returned false here, the // application would exit immediately. - return TRUE; + return true; } // ---------------------------------------------------------------------------- // main frame // ---------------------------------------------------------------------------- +#ifdef __VISUALC__ +#pragma warning(disable: 4355) // this used in base member initializer list +#endif + // frame constructor MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) - : wxFrame((wxFrame *)NULL, -1, title, pos, size) + : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size), + m_timerIdleWakeUp(this) { m_pidLast = 0; @@ -354,7 +418,7 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) #endif // create a menu bar - wxMenu *menuFile = new wxMenu(_T(""), wxMENU_TEAROFF); + wxMenu *menuFile = new wxMenu(wxEmptyString, wxMENU_TEAROFF); menuFile->Append(Exec_Kill, _T("&Kill process...\tCtrl-K"), _T("Kill a process by PID")); menuFile->AppendSeparator(); @@ -387,7 +451,7 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) execMenu->Append(Exec_DDERequest, _T("Send DDE &request...\tCtrl-R")); #endif - wxMenu *helpMenu = new wxMenu(_T(""), wxMENU_TEAROFF); + wxMenu *helpMenu = new wxMenu(wxEmptyString, wxMENU_TEAROFF); helpMenu->Append(Exec_About, _T("&About...\tF1"), _T("Show about dialog")); // now append the freshly created menu to the menu bar... @@ -400,7 +464,7 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) SetMenuBar(menuBar); // create the listbox in which we will show misc messages as they come - m_lbox = new wxListBox(this, -1); + m_lbox = new wxListBox(this, wxID_ANY); wxFont font(12, wxFONTFAMILY_TELETYPE, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL); if ( font.Ok() ) @@ -409,7 +473,7 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) #if wxUSE_STATUSBAR // create a status bar just for fun (by default with 1 pane only) CreateStatusBar(); - SetStatusText(_T("Welcome to wxWindows exec sample!")); + SetStatusText(_T("Welcome to wxWidgets exec sample!")); #endif // wxUSE_STATUSBAR } @@ -419,8 +483,8 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event)) { - // TRUE is to force the frame to close - Close(TRUE); + // true is to force the frame to close + Close(true); } void MyFrame::OnClear(wxCommandEvent& WXUNUSED(event)) @@ -430,7 +494,7 @@ void MyFrame::OnClear(wxCommandEvent& WXUNUSED(event)) void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event)) { - wxMessageBox(_T("Exec wxWindows Sample\n© 2000-2001 Vadim Zeitlin"), + wxMessageBox(_T("Exec wxWidgets Sample\n(c) 2000-2002 Vadim Zeitlin"), _T("About Exec"), wxOK | wxICON_INFORMATION, this); } @@ -617,11 +681,11 @@ void MyFrame::OnExecWithRedirect(wxCommandEvent& WXUNUSED(event)) wxYES_NO | wxCANCEL | wxICON_QUESTION, this) ) { case wxYES: - sync = TRUE; + sync = true; break; case wxNO: - sync = FALSE; + sync = false; break; default: @@ -652,7 +716,7 @@ void MyFrame::OnExecWithRedirect(wxCommandEvent& WXUNUSED(event)) } else { - m_running.Add(process); + AddAsyncProcess(process); } } @@ -683,7 +747,7 @@ void MyFrame::OnExecWithPipe(wxCommandEvent& WXUNUSED(event)) { wxLogStatus( _T("Process %ld (%s) launched."), pid, cmd.c_str() ); - m_running.Add(process); + AddAsyncProcess(process); } else { @@ -695,7 +759,7 @@ void MyFrame::OnExecWithPipe(wxCommandEvent& WXUNUSED(event)) m_cmdLast = cmd; } -void MyFrame::OnPOpen(wxCommandEvent& event) +void MyFrame::OnPOpen(wxCommandEvent& WXUNUSED(event)) { wxString cmd = wxGetTextFromUser(_T("Enter the command to launch: "), DIALOG_TITLE, @@ -710,6 +774,8 @@ void MyFrame::OnPOpen(wxCommandEvent& event) return; } + wxLogVerbose(_T("PID of the new process: %ld"), process->GetPid()); + wxOutputStream *out = process->GetOutputStream(); if ( !out ) { @@ -727,12 +793,17 @@ void MyFrame::OnPOpen(wxCommandEvent& event) new MyPipeFrame(this, cmd, process); } -void MyFrame::OnFileExec(wxCommandEvent& event) +void MyFrame::OnFileExec(wxCommandEvent& WXUNUSED(event)) { static wxString s_filename; - wxString filename = wxLoadFileSelector(_T(""), _T(""), s_filename); - if ( !filename ) + wxString filename; + +#if wxUSE_FILEDLG + filename = wxLoadFileSelector(wxEmptyString, wxEmptyString, s_filename); +#endif // wxUSE_FILEDLG + + if ( filename.empty() ) return; s_filename = filename; @@ -748,7 +819,7 @@ void MyFrame::OnFileExec(wxCommandEvent& event) wxString cmd; bool ok = ft->GetOpenCommand(&cmd, - wxFileType::MessageParameters(filename, _T(""))); + wxFileType::MessageParameters(filename)); delete ft; if ( !ok ) { @@ -771,23 +842,23 @@ bool MyFrame::GetDDEServer() wxString server = wxGetTextFromUser(_T("Server to connect to:"), DIALOG_TITLE, m_server); if ( !server ) - return FALSE; + return false; m_server = server; wxString topic = wxGetTextFromUser(_T("DDE topic:"), DIALOG_TITLE, m_topic); if ( !topic ) - return FALSE; + return false; m_topic = topic; wxString cmd = wxGetTextFromUser(_T("DDE command:"), DIALOG_TITLE, m_cmdDde); if ( !cmd ) - return FALSE; + return false; m_cmdDde = cmd; - return TRUE; + return true; } void MyFrame::OnDDEExec(wxCommandEvent& WXUNUSED(event)) @@ -796,7 +867,7 @@ void MyFrame::OnDDEExec(wxCommandEvent& WXUNUSED(event)) return; wxDDEClient client; - wxConnectionBase *conn = client.MakeConnection("", m_server, m_topic); + wxConnectionBase *conn = client.MakeConnection(wxEmptyString, m_server, m_topic); if ( !conn ) { wxLogError(_T("Failed to connect to the DDE server '%s'."), @@ -822,7 +893,7 @@ void MyFrame::OnDDERequest(wxCommandEvent& WXUNUSED(event)) return; wxDDEClient client; - wxConnectionBase *conn = client.MakeConnection("", m_server, m_topic); + wxConnectionBase *conn = client.MakeConnection(wxEmptyString, m_server, m_topic); if ( !conn ) { wxLogError(_T("Failed to connect to the DDE server '%s'."), @@ -861,9 +932,14 @@ void MyFrame::OnIdle(wxIdleEvent& event) } } +void MyFrame::OnTimer(wxTimerEvent& WXUNUSED(event)) +{ + wxWakeUpIdle(); +} + void MyFrame::OnProcessTerminated(MyPipedProcess *process) { - m_running.Remove(process); + RemoveAsyncProcess(process); } @@ -906,12 +982,11 @@ void MyProcess::OnTerminate(int pid, int status) bool MyPipedProcess::HasInput() { - bool hasInput = FALSE; + bool hasInput = false; - wxInputStream& is = *GetInputStream(); - if ( !is.Eof() ) + if ( IsInputAvailable() ) { - wxTextInputStream tis(is); + wxTextInputStream tis(*GetInputStream()); // this assumes that the output is always line buffered wxString msg; @@ -919,13 +994,12 @@ bool MyPipedProcess::HasInput() m_parent->GetLogListBox()->Append(msg); - hasInput = TRUE; + hasInput = true; } - wxInputStream& es = *GetErrorStream(); - if ( !es.Eof() ) + if ( IsErrorAvailable() ) { - wxTextInputStream tis(es); + wxTextInputStream tis(*GetErrorStream()); // this assumes that the output is always line buffered wxString msg; @@ -933,7 +1007,7 @@ bool MyPipedProcess::HasInput() m_parent->GetLogListBox()->Append(msg); - hasInput = TRUE; + hasInput = true; } return hasInput; @@ -956,7 +1030,7 @@ void MyPipedProcess::OnTerminate(int pid, int status) bool MyPipedProcess2::HasInput() { - if ( !!m_input ) + if ( !m_input.empty() ) { wxTextOutputStream os(*GetOutputStream()); os.WriteString(m_input); @@ -965,7 +1039,7 @@ bool MyPipedProcess2::HasInput() m_input.clear(); // call us once again - may be we'll have output - return TRUE; + return true; } return MyPipedProcess::HasInput(); @@ -978,45 +1052,149 @@ bool MyPipedProcess2::HasInput() MyPipeFrame::MyPipeFrame(wxFrame *parent, const wxString& cmd, wxProcess *process) - : wxFrame(parent, -1, cmd), + : wxFrame(parent, wxID_ANY, cmd), m_process(process), // in a real program we'd check that the streams are !NULL here + m_out(*process->GetOutputStream()), m_in(*process->GetInputStream()), - m_out(*process->GetOutputStream()) + m_err(*process->GetErrorStream()) { - m_textIn = new wxTextCtrl(this, -1, _T(""), + m_process->SetNextHandler(this); + + wxPanel *panel = new wxPanel(this, wxID_ANY); + + m_textOut = new wxTextCtrl(panel, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, wxTE_PROCESS_ENTER); - m_textOut = new wxTextCtrl(this, -1, _T("")); - m_textOut->SetEditable(FALSE); + m_textIn = new wxTextCtrl(panel, wxID_ANY, wxEmptyString, + wxDefaultPosition, wxDefaultSize, + wxTE_MULTILINE | wxTE_RICH); + m_textIn->SetEditable(false); + m_textErr = new wxTextCtrl(panel, wxID_ANY, wxEmptyString, + wxDefaultPosition, wxDefaultSize, + wxTE_MULTILINE | wxTE_RICH); + m_textErr->SetEditable(false); wxSizer *sizerTop = new wxBoxSizer(wxVERTICAL); - sizerTop->Add(m_textIn, 0, wxGROW | wxALL, 5); + sizerTop->Add(m_textOut, 0, wxGROW | wxALL, 5); wxSizer *sizerBtns = new wxBoxSizer(wxHORIZONTAL); - sizerBtns->Add(new wxButton(this, Exec_Btn_Send, _T("&Send")), 0, - wxALL, 10); - sizerBtns->Add(new wxButton(this, Exec_Btn_Get, _T("&Get")), 0, - wxALL, 10); + sizerBtns-> + Add(new wxButton(panel, Exec_Btn_Send, _T("&Send")), 0, wxALL, 5); + sizerBtns-> + Add(new wxButton(panel, Exec_Btn_SendFile, _T("&File...")), 0, wxALL, 5); + sizerBtns-> + Add(new wxButton(panel, Exec_Btn_Get, _T("&Get")), 0, wxALL, 5); + sizerBtns-> + Add(new wxButton(panel, Exec_Btn_Close, _T("&Close")), 0, wxALL, 5); sizerTop->Add(sizerBtns, 0, wxCENTRE | wxALL, 5); - sizerTop->Add(m_textOut, 0, wxGROW | wxALL, 5); + sizerTop->Add(m_textIn, 1, wxGROW | wxALL, 5); + sizerTop->Add(m_textErr, 1, wxGROW | wxALL, 5); - SetSizer(sizerTop); + panel->SetSizer(sizerTop); sizerTop->Fit(this); Show(); } +void MyPipeFrame::OnBtnSendFile(wxCommandEvent& WXUNUSED(event)) +{ +#if wxUSE_FILEDLG + wxFileDialog filedlg(this, _T("Select file to send")); + if ( filedlg.ShowModal() != wxID_OK ) + return; + + wxFFile file(filedlg.GetFilename(), _T("r")); + wxString data; + if ( !file.IsOpened() || !file.ReadAll(&data) ) + return; + + // can't write the entire string at once, this risk overflowing the pipe + // and we would dead lock + size_t len = data.length(); + const wxChar *pc = data.c_str(); + while ( len ) + { + const size_t CHUNK_SIZE = 4096; + m_out.Write(pc, len > CHUNK_SIZE ? CHUNK_SIZE : len); + + // note that not all data could have been written as we don't block on + // the write end of the pipe + const size_t lenChunk = m_out.LastWrite(); + + pc += lenChunk; + len -= lenChunk; + + DoGet(); + } +#endif // wxUSE_FILEDLG +} + void MyPipeFrame::DoGet() { - m_textOut->SetValue(m_in.ReadLine()); + // we don't have any way to be notified when any input appears on the + // stream so we have to poll it :-( + DoGetFromStream(m_textIn, m_in); + DoGetFromStream(m_textErr, m_err); } -void MyPipeFrame::OnClose(wxCloseEvent& event) +void MyPipeFrame::DoGetFromStream(wxTextCtrl *text, wxInputStream& in) +{ + while ( in.CanRead() ) + { + wxChar buffer[4096]; + buffer[in.Read(buffer, WXSIZEOF(buffer) - 1).LastRead()] = _T('\0'); + + text->AppendText(buffer); + } +} + +void MyPipeFrame::DoClose() { m_process->CloseOutput(); + DisableInput(); +} + +void MyPipeFrame::DisableInput() +{ + m_textOut->SetEditable(false); + FindWindow(Exec_Btn_Send)->Disable(); + FindWindow(Exec_Btn_SendFile)->Disable(); + FindWindow(Exec_Btn_Close)->Disable(); +} + +void MyPipeFrame::DisableOutput() +{ + FindWindow(Exec_Btn_Get)->Disable(); +} + +void MyPipeFrame::OnClose(wxCloseEvent& event) +{ + if ( m_process ) + { + // we're not interested in getting the process termination notification + // if we are closing it ourselves + wxProcess *process = m_process; + m_process = NULL; + process->SetNextHandler(NULL); + + process->CloseOutput(); + } + event.Skip(); } +void MyPipeFrame::OnProcessTerm(wxProcessEvent& WXUNUSED(event)) +{ + DoGet(); + + delete m_process; + m_process = NULL; + + wxLogWarning(_T("The other process has terminated, closing")); + + DisableInput(); + DisableOutput(); +}