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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: exec.cpp
3 // Purpose: exec sample demonstrates wxExecute and related functions
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 15.01.00
7 // RCS-ID: $Id$
8 // Copyright: (c) Vadim Zeitlin
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 // For compilers that support precompilation, includes "wx/wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 // for all others, include the necessary headers (this file is usually all you
28 // need because it includes almost all "standard" wxWidgets headers
29 #ifndef WX_PRECOMP
30 #include "wx/app.h"
31 #include "wx/log.h"
32 #include "wx/frame.h"
33 #include "wx/panel.h"
34
35 #include "wx/timer.h"
36
37 #include "wx/utils.h"
38 #include "wx/menu.h"
39
40 #include "wx/msgdlg.h"
41 #include "wx/textdlg.h"
42 #include "wx/filedlg.h"
43 #include "wx/choicdlg.h"
44
45 #include "wx/button.h"
46 #include "wx/textctrl.h"
47 #include "wx/listbox.h"
48
49 #include "wx/sizer.h"
50 #endif
51
52 #include "wx/txtstrm.h"
53 #include "wx/numdlg.h"
54 #include "wx/textdlg.h"
55 #include "wx/ffile.h"
56 #include "wx/stopwatch.h"
57
58 #include "wx/process.h"
59
60 #include "wx/mimetype.h"
61
62 #ifdef __WINDOWS__
63 #include "wx/dde.h"
64 #endif // __WINDOWS__
65
66 // ----------------------------------------------------------------------------
67 // the usual application and main frame classes
68 // ----------------------------------------------------------------------------
69
70 // Define a new application type, each program should derive a class from wxApp
71 class MyApp : public wxApp
72 {
73 public:
74 // override base class virtuals
75 // ----------------------------
76
77 // this one is called on application startup and is a good place for the app
78 // initialization (doing it here and not in the ctor allows to have an error
79 // return: if OnInit() returns false, the application terminates)
80 virtual bool OnInit();
81 };
82
83 // Define an array of process pointers used by MyFrame
84 class MyPipedProcess;
85 WX_DEFINE_ARRAY_PTR(MyPipedProcess *, MyPipedProcessesArray);
86
87 class MyProcess;
88 WX_DEFINE_ARRAY_PTR(MyProcess *, MyProcessesArray);
89
90 // Define a new frame type: this is going to be our main frame
91 class MyFrame : public wxFrame
92 {
93 public:
94 // ctor and dtor
95 MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
96 virtual ~MyFrame();
97
98 // event handlers (these functions should _not_ be virtual)
99 void OnQuit(wxCommandEvent& event);
100
101 void OnKill(wxCommandEvent& event);
102
103 void OnClear(wxCommandEvent& event);
104
105 void OnBeginBusyCursor(wxCommandEvent& event);
106 void OnEndBusyCursor(wxCommandEvent& event);
107
108 void OnSyncExec(wxCommandEvent& event);
109 void OnSyncNoEventsExec(wxCommandEvent& event);
110 void OnAsyncExec(wxCommandEvent& event);
111 void OnShell(wxCommandEvent& event);
112 void OnExecWithRedirect(wxCommandEvent& event);
113 void OnExecWithPipe(wxCommandEvent& event);
114
115 void OnPOpen(wxCommandEvent& event);
116
117 void OnFileExec(wxCommandEvent& event);
118 void OnOpenURL(wxCommandEvent& event);
119
120 void OnAbout(wxCommandEvent& event);
121
122 // polling output of async processes
123 void OnTimer(wxTimerEvent& event);
124 void OnIdle(wxIdleEvent& event);
125
126 // for MyPipedProcess
127 void OnProcessTerminated(MyPipedProcess *process);
128 wxListBox *GetLogListBox() const { return m_lbox; }
129
130 // for MyProcess
131 void OnAsyncTermination(MyProcess *process);
132
133 private:
134 void ShowOutput(const wxString& cmd,
135 const wxArrayString& output,
136 const wxString& title);
137
138 void DoAsyncExec(const wxString& cmd);
139
140 void AddAsyncProcess(MyProcess *process) { m_allAsync.push_back(process); }
141
142 void AddPipedProcess(MyPipedProcess *process);
143 void RemovePipedProcess(MyPipedProcess *process);
144
145
146 // the PID of the last process we launched asynchronously
147 long m_pidLast;
148
149 // last command we executed
150 wxString m_cmdLast;
151
152 #ifdef __WINDOWS__
153 void OnDDEExec(wxCommandEvent& event);
154 void OnDDERequest(wxCommandEvent& event);
155
156 bool GetDDEServer();
157
158 // last params of a DDE transaction
159 wxString m_server,
160 m_topic,
161 m_cmdDde;
162 #endif // __WINDOWS__
163
164 wxListBox *m_lbox;
165
166 // array of running processes with redirected IO
167 MyPipedProcessesArray m_running;
168
169 // array of all asynchrously running processes
170 MyProcessesArray m_allAsync;
171
172 // the idle event wake up timer
173 wxTimer m_timerIdleWakeUp;
174
175 // any class wishing to process wxWidgets events must use this macro
176 DECLARE_EVENT_TABLE()
177 };
178
179 // ----------------------------------------------------------------------------
180 // MyPipeFrame: allows the user to communicate with the child process
181 // ----------------------------------------------------------------------------
182
183 class MyPipeFrame : public wxFrame
184 {
185 public:
186 MyPipeFrame(wxFrame *parent,
187 const wxString& cmd,
188 wxProcess *process);
189
190 protected:
191 void OnTextEnter(wxCommandEvent& WXUNUSED(event)) { DoSend(); }
192 void OnBtnSend(wxCommandEvent& WXUNUSED(event)) { DoSend(); }
193 void OnBtnSendFile(wxCommandEvent& WXUNUSED(event));
194 void OnBtnGet(wxCommandEvent& WXUNUSED(event)) { DoGet(); }
195 void OnBtnClose(wxCommandEvent& WXUNUSED(event)) { DoClose(); }
196
197 void OnClose(wxCloseEvent& event);
198
199 void OnProcessTerm(wxProcessEvent& event);
200
201 void DoSend()
202 {
203 wxString s(m_textOut->GetValue());
204 s += _T('\n');
205 m_out.Write(s.c_str(), s.length());
206 m_textOut->Clear();
207
208 DoGet();
209 }
210
211 void DoGet();
212 void DoClose();
213
214 private:
215 void DoGetFromStream(wxTextCtrl *text, wxInputStream& in);
216 void DisableInput();
217 void DisableOutput();
218
219
220 wxProcess *m_process;
221
222 wxOutputStream &m_out;
223 wxInputStream &m_in,
224 &m_err;
225
226 wxTextCtrl *m_textOut,
227 *m_textIn,
228 *m_textErr;
229
230 DECLARE_EVENT_TABLE()
231 };
232
233 // ----------------------------------------------------------------------------
234 // wxProcess-derived classes
235 // ----------------------------------------------------------------------------
236
237 // This is the handler for process termination events
238 class MyProcess : public wxProcess
239 {
240 public:
241 MyProcess(MyFrame *parent, const wxString& cmd)
242 : wxProcess(parent), m_cmd(cmd)
243 {
244 m_parent = parent;
245 }
246
247 // instead of overriding this virtual function we might as well process the
248 // event from it in the frame class - this might be more convenient in some
249 // cases
250 virtual void OnTerminate(int pid, int status);
251
252 protected:
253 MyFrame *m_parent;
254 wxString m_cmd;
255 };
256
257 // A specialization of MyProcess for redirecting the output
258 class MyPipedProcess : public MyProcess
259 {
260 public:
261 MyPipedProcess(MyFrame *parent, const wxString& cmd)
262 : MyProcess(parent, cmd)
263 {
264 Redirect();
265 }
266
267 virtual void OnTerminate(int pid, int status);
268
269 virtual bool HasInput();
270 };
271
272 // A version of MyPipedProcess which also sends input to the stdin of the
273 // child process
274 class MyPipedProcess2 : public MyPipedProcess
275 {
276 public:
277 MyPipedProcess2(MyFrame *parent, const wxString& cmd, const wxString& input)
278 : MyPipedProcess(parent, cmd), m_input(input)
279 {
280 }
281
282 virtual bool HasInput();
283
284 private:
285 wxString m_input;
286 };
287
288 // ----------------------------------------------------------------------------
289 // constants
290 // ----------------------------------------------------------------------------
291
292 // IDs for the controls and the menu commands
293 enum
294 {
295 // menu items
296 Exec_Quit = 100,
297 Exec_Kill,
298 Exec_ClearLog,
299 Exec_BeginBusyCursor,
300 Exec_EndBusyCursor,
301 Exec_SyncExec = 200,
302 Exec_SyncNoEventsExec,
303 Exec_AsyncExec,
304 Exec_Shell,
305 Exec_POpen,
306 Exec_OpenFile,
307 Exec_OpenURL,
308 Exec_DDEExec,
309 Exec_DDERequest,
310 Exec_Redirect,
311 Exec_Pipe,
312 Exec_About = 300,
313
314 // control ids
315 Exec_Btn_Send = 1000,
316 Exec_Btn_SendFile,
317 Exec_Btn_Get,
318 Exec_Btn_Close
319 };
320
321 static const wxChar *DIALOG_TITLE = _T("Exec sample");
322
323 // ----------------------------------------------------------------------------
324 // event tables and other macros for wxWidgets
325 // ----------------------------------------------------------------------------
326
327 // the event tables connect the wxWidgets events with the functions (event
328 // handlers) which process them. It can be also done at run-time, but for the
329 // simple menu events like this the static method is much simpler.
330 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
331 EVT_MENU(Exec_Quit, MyFrame::OnQuit)
332 EVT_MENU(Exec_Kill, MyFrame::OnKill)
333 EVT_MENU(Exec_ClearLog, MyFrame::OnClear)
334 EVT_MENU(Exec_BeginBusyCursor, MyFrame::OnBeginBusyCursor)
335 EVT_MENU(Exec_EndBusyCursor, MyFrame::OnEndBusyCursor)
336
337 EVT_MENU(Exec_SyncExec, MyFrame::OnSyncExec)
338 EVT_MENU(Exec_SyncNoEventsExec, MyFrame::OnSyncNoEventsExec)
339 EVT_MENU(Exec_AsyncExec, MyFrame::OnAsyncExec)
340 EVT_MENU(Exec_Shell, MyFrame::OnShell)
341 EVT_MENU(Exec_Redirect, MyFrame::OnExecWithRedirect)
342 EVT_MENU(Exec_Pipe, MyFrame::OnExecWithPipe)
343
344 EVT_MENU(Exec_POpen, MyFrame::OnPOpen)
345
346 EVT_MENU(Exec_OpenFile, MyFrame::OnFileExec)
347 EVT_MENU(Exec_OpenURL, MyFrame::OnOpenURL)
348
349 #ifdef __WINDOWS__
350 EVT_MENU(Exec_DDEExec, MyFrame::OnDDEExec)
351 EVT_MENU(Exec_DDERequest, MyFrame::OnDDERequest)
352 #endif // __WINDOWS__
353
354 EVT_MENU(Exec_About, MyFrame::OnAbout)
355
356 EVT_IDLE(MyFrame::OnIdle)
357
358 EVT_TIMER(wxID_ANY, MyFrame::OnTimer)
359 END_EVENT_TABLE()
360
361 BEGIN_EVENT_TABLE(MyPipeFrame, wxFrame)
362 EVT_BUTTON(Exec_Btn_Send, MyPipeFrame::OnBtnSend)
363 EVT_BUTTON(Exec_Btn_SendFile, MyPipeFrame::OnBtnSendFile)
364 EVT_BUTTON(Exec_Btn_Get, MyPipeFrame::OnBtnGet)
365 EVT_BUTTON(Exec_Btn_Close, MyPipeFrame::OnBtnClose)
366
367 EVT_TEXT_ENTER(wxID_ANY, MyPipeFrame::OnTextEnter)
368
369 EVT_CLOSE(MyPipeFrame::OnClose)
370
371 EVT_END_PROCESS(wxID_ANY, MyPipeFrame::OnProcessTerm)
372 END_EVENT_TABLE()
373
374 // Create a new application object: this macro will allow wxWidgets to create
375 // the application object during program execution (it's better than using a
376 // static object for many reasons) and also declares the accessor function
377 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
378 // not wxApp)
379 IMPLEMENT_APP(MyApp)
380
381 // ============================================================================
382 // implementation
383 // ============================================================================
384
385 // ----------------------------------------------------------------------------
386 // the application class
387 // ----------------------------------------------------------------------------
388
389 // `Main program' equivalent: the program execution "starts" here
390 bool MyApp::OnInit()
391 {
392 if ( !wxApp::OnInit() )
393 return false;
394
395 // Create the main application window
396 MyFrame *frame = new MyFrame(_T("Exec wxWidgets sample"),
397 wxDefaultPosition, wxSize(500, 140));
398
399 // Show it and tell the application that it's our main window
400 frame->Show(true);
401 SetTopWindow(frame);
402
403 // success: wxApp::OnRun() will be called which will enter the main message
404 // loop and the application will run. If we returned false here, the
405 // application would exit immediately.
406 return true;
407 }
408
409 // ----------------------------------------------------------------------------
410 // main frame
411 // ----------------------------------------------------------------------------
412
413 #ifdef __VISUALC__
414 #pragma warning(disable: 4355) // this used in base member initializer list
415 #endif
416
417 // frame constructor
418 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
419 : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size),
420 m_timerIdleWakeUp(this)
421 {
422 m_pidLast = 0;
423
424 #ifdef __WXMAC__
425 // we need this in order to allow the about menu relocation, since ABOUT is
426 // not the default id of the about menu
427 wxApp::s_macAboutMenuItemId = Exec_About;
428 #endif
429
430 // create a menu bar
431 wxMenu *menuFile = new wxMenu(wxEmptyString, wxMENU_TEAROFF);
432 menuFile->Append(Exec_Kill, _T("&Kill process...\tCtrl-K"),
433 _T("Kill a process by PID"));
434 menuFile->AppendSeparator();
435 menuFile->Append(Exec_ClearLog, _T("&Clear log\tCtrl-L"),
436 _T("Clear the log window"));
437 menuFile->AppendSeparator();
438 menuFile->Append(Exec_BeginBusyCursor, _T("Show &busy cursor\tCtrl-C"));
439 menuFile->Append(Exec_EndBusyCursor, _T("Show &normal cursor\tShift-Ctrl-C"));
440 menuFile->AppendSeparator();
441 menuFile->Append(Exec_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
442
443 wxMenu *execMenu = new wxMenu;
444 execMenu->Append(Exec_SyncExec, _T("Sync &execution...\tCtrl-E"),
445 _T("Launch a program and return when it terminates"));
446 execMenu->Append(Exec_SyncNoEventsExec, _T("Sync execution and &block...\tCtrl-B"),
447 _T("Launch a program and block until it terminates"));
448 execMenu->Append(Exec_AsyncExec, _T("&Async execution...\tCtrl-A"),
449 _T("Launch a program and return immediately"));
450 execMenu->Append(Exec_Shell, _T("Execute &shell command...\tCtrl-S"),
451 _T("Launch a shell and execute a command in it"));
452 execMenu->AppendSeparator();
453 execMenu->Append(Exec_Redirect, _T("Capture command &output...\tCtrl-O"),
454 _T("Launch a program and capture its output"));
455 execMenu->Append(Exec_Pipe, _T("&Pipe through command..."),
456 _T("Pipe a string through a filter"));
457 execMenu->Append(Exec_POpen, _T("&Open a pipe to a command...\tCtrl-P"),
458 _T("Open a pipe to and from another program"));
459
460 execMenu->AppendSeparator();
461 execMenu->Append(Exec_OpenFile, _T("Open &file...\tCtrl-F"),
462 _T("Launch the command to open this kind of files"));
463 execMenu->Append(Exec_OpenURL, _T("Open &URL...\tCtrl-U"),
464 _T("Launch the default browser with the given URL"));
465 #ifdef __WINDOWS__
466 execMenu->AppendSeparator();
467 execMenu->Append(Exec_DDEExec, _T("Execute command via &DDE...\tCtrl-D"));
468 execMenu->Append(Exec_DDERequest, _T("Send DDE &request...\tCtrl-R"));
469 #endif
470
471 wxMenu *helpMenu = new wxMenu(wxEmptyString, wxMENU_TEAROFF);
472 helpMenu->Append(Exec_About, _T("&About...\tF1"), _T("Show about dialog"));
473
474 // now append the freshly created menu to the menu bar...
475 wxMenuBar *menuBar = new wxMenuBar();
476 menuBar->Append(menuFile, _T("&File"));
477 menuBar->Append(execMenu, _T("&Exec"));
478 menuBar->Append(helpMenu, _T("&Help"));
479
480 // ... and attach this menu bar to the frame
481 SetMenuBar(menuBar);
482
483 // create the listbox in which we will show misc messages as they come
484 m_lbox = new wxListBox(this, wxID_ANY);
485 wxFont font(12, wxFONTFAMILY_TELETYPE, wxFONTSTYLE_NORMAL,
486 wxFONTWEIGHT_NORMAL);
487 if ( font.Ok() )
488 m_lbox->SetFont(font);
489
490 #if wxUSE_STATUSBAR
491 // create a status bar just for fun (by default with 1 pane only)
492 CreateStatusBar();
493 SetStatusText(_T("Welcome to wxWidgets exec sample!"));
494 #endif // wxUSE_STATUSBAR
495 }
496
497 MyFrame::~MyFrame()
498 {
499 // any processes left until now must be deleted manually: normally this is
500 // done when the associated process terminates but it must be still running
501 // if this didn't happen until now
502 for ( size_t n = 0; n < m_allAsync.size(); n++ )
503 {
504 delete m_allAsync[n];
505 }
506 }
507
508 // ----------------------------------------------------------------------------
509 // event handlers: file and help menu
510 // ----------------------------------------------------------------------------
511
512 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
513 {
514 // true is to force the frame to close
515 Close(true);
516 }
517
518 void MyFrame::OnClear(wxCommandEvent& WXUNUSED(event))
519 {
520 m_lbox->Clear();
521 }
522
523 void MyFrame::OnBeginBusyCursor(wxCommandEvent& WXUNUSED(event))
524 {
525 wxBeginBusyCursor();
526 }
527
528 void MyFrame::OnEndBusyCursor(wxCommandEvent& WXUNUSED(event))
529 {
530 wxEndBusyCursor();
531 }
532
533 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
534 {
535 wxMessageBox(_T("Exec wxWidgets Sample\n(c) 2000-2002 Vadim Zeitlin"),
536 _T("About Exec"), wxOK | wxICON_INFORMATION, this);
537 }
538
539 void MyFrame::OnKill(wxCommandEvent& WXUNUSED(event))
540 {
541 long pid = wxGetNumberFromUser(_T("Please specify the process to kill"),
542 _T("Enter PID:"),
543 _T("Exec question"),
544 m_pidLast,
545 // we need the full unsigned int range
546 -INT_MAX, INT_MAX,
547 this);
548 if ( pid == -1 )
549 {
550 // cancelled
551 return;
552 }
553
554 static const wxString signalNames[] =
555 {
556 _T("Just test (SIGNONE)"),
557 _T("Hangup (SIGHUP)"),
558 _T("Interrupt (SIGINT)"),
559 _T("Quit (SIGQUIT)"),
560 _T("Illegal instruction (SIGILL)"),
561 _T("Trap (SIGTRAP)"),
562 _T("Abort (SIGABRT)"),
563 _T("Emulated trap (SIGEMT)"),
564 _T("FP exception (SIGFPE)"),
565 _T("Kill (SIGKILL)"),
566 _T("Bus (SIGBUS)"),
567 _T("Segment violation (SIGSEGV)"),
568 _T("System (SIGSYS)"),
569 _T("Broken pipe (SIGPIPE)"),
570 _T("Alarm (SIGALRM)"),
571 _T("Terminate (SIGTERM)"),
572 };
573
574 int sig = wxGetSingleChoiceIndex(_T("How to kill the process?"),
575 _T("Exec question"),
576 WXSIZEOF(signalNames), signalNames,
577 this);
578 switch ( sig )
579 {
580 default:
581 wxFAIL_MSG( _T("unexpected return value") );
582 // fall through
583
584 case -1:
585 // cancelled
586 return;
587
588 case wxSIGNONE:
589 case wxSIGHUP:
590 case wxSIGINT:
591 case wxSIGQUIT:
592 case wxSIGILL:
593 case wxSIGTRAP:
594 case wxSIGABRT:
595 case wxSIGEMT:
596 case wxSIGFPE:
597 case wxSIGKILL:
598 case wxSIGBUS:
599 case wxSIGSEGV:
600 case wxSIGSYS:
601 case wxSIGPIPE:
602 case wxSIGALRM:
603 case wxSIGTERM:
604 break;
605 }
606
607 if ( sig == 0 )
608 {
609 if ( wxProcess::Exists(pid) )
610 wxLogStatus(_T("Process %ld is running."), pid);
611 else
612 wxLogStatus(_T("No process with pid = %ld."), pid);
613 }
614 else // not SIGNONE
615 {
616 wxKillError rc = wxProcess::Kill(pid, (wxSignal)sig);
617 if ( rc == wxKILL_OK )
618 {
619 wxLogStatus(_T("Process %ld killed with signal %d."), pid, sig);
620 }
621 else
622 {
623 static const wxChar *errorText[] =
624 {
625 _T(""), // no error
626 _T("signal not supported"),
627 _T("permission denied"),
628 _T("no such process"),
629 _T("unspecified error"),
630 };
631
632 wxLogStatus(_T("Failed to kill process %ld with signal %d: %s"),
633 pid, sig, errorText[rc]);
634 }
635 }
636 }
637
638 // ----------------------------------------------------------------------------
639 // event handlers: exec menu
640 // ----------------------------------------------------------------------------
641
642 void MyFrame::DoAsyncExec(const wxString& cmd)
643 {
644 MyProcess * const process = new MyProcess(this, cmd);
645 m_pidLast = wxExecute(cmd, wxEXEC_ASYNC, process);
646 if ( !m_pidLast )
647 {
648 wxLogError(_T("Execution of '%s' failed."), cmd.c_str());
649
650 delete process;
651 }
652 else
653 {
654 wxLogStatus(_T("Process %ld (%s) launched."), m_pidLast, cmd.c_str());
655
656 m_cmdLast = cmd;
657
658 // the parent frame keeps track of all async processes as it needs to
659 // free them if we exit before the child process terminates
660 AddAsyncProcess(process);
661 }
662 }
663
664 void MyFrame::OnSyncExec(wxCommandEvent& WXUNUSED(event))
665 {
666 wxString cmd = wxGetTextFromUser(_T("Enter the command: "),
667 DIALOG_TITLE,
668 m_cmdLast);
669
670 if ( !cmd )
671 return;
672
673 wxLogStatus( _T("'%s' is running please wait..."), cmd.c_str() );
674
675 int code = wxExecute(cmd, wxEXEC_SYNC);
676
677 wxLogStatus(_T("Process '%s' terminated with exit code %d."),
678 cmd.c_str(), code);
679
680 m_cmdLast = cmd;
681 }
682
683 void MyFrame::OnSyncNoEventsExec(wxCommandEvent& WXUNUSED(event))
684 {
685 wxString cmd = wxGetTextFromUser(_T("Enter the command: "),
686 DIALOG_TITLE,
687 m_cmdLast);
688
689 if ( !cmd )
690 return;
691
692 wxLogStatus( _T("'%s' is running please wait..."), cmd.c_str() );
693
694 int code = wxExecute(cmd, wxEXEC_BLOCK);
695
696 wxLogStatus(_T("Process '%s' terminated with exit code %d."),
697 cmd.c_str(), code);
698
699 m_cmdLast = cmd;
700 }
701
702 void MyFrame::OnAsyncExec(wxCommandEvent& WXUNUSED(event))
703 {
704 wxString cmd = wxGetTextFromUser(_T("Enter the command: "),
705 DIALOG_TITLE,
706 m_cmdLast);
707
708 if ( !cmd )
709 return;
710
711 DoAsyncExec(cmd);
712 }
713
714 void MyFrame::OnShell(wxCommandEvent& WXUNUSED(event))
715 {
716 wxString cmd = wxGetTextFromUser(_T("Enter the command: "),
717 DIALOG_TITLE,
718 m_cmdLast);
719
720 if ( !cmd )
721 return;
722
723 int code = wxShell(cmd);
724 wxLogStatus(_T("Shell command '%s' terminated with exit code %d."),
725 cmd.c_str(), code);
726 m_cmdLast = cmd;
727 }
728
729 void MyFrame::OnExecWithRedirect(wxCommandEvent& WXUNUSED(event))
730 {
731 if ( !m_cmdLast )
732 {
733 #ifdef __WXMSW__
734 m_cmdLast = "type Makefile.in";
735 #else
736 m_cmdLast = "cat -n Makefile";
737 #endif
738 }
739
740 wxString cmd = wxGetTextFromUser(_T("Enter the command: "),
741 DIALOG_TITLE,
742 m_cmdLast);
743
744 if ( !cmd )
745 return;
746
747 bool sync;
748 switch ( wxMessageBox(_T("Execute it synchronously?"),
749 _T("Exec question"),
750 wxYES_NO | wxCANCEL | wxICON_QUESTION, this) )
751 {
752 case wxYES:
753 sync = true;
754 break;
755
756 case wxNO:
757 sync = false;
758 break;
759
760 default:
761 return;
762 }
763
764 if ( sync )
765 {
766 wxLogStatus("\"%s\" is running please wait...", cmd);
767
768 wxStopWatch sw;
769
770 wxArrayString output, errors;
771 int code = wxExecute(cmd, output, errors);
772
773 wxLogStatus("Command \"%s\" terminated after %ldms; exit code %d.",
774 cmd, sw.Time(), code);
775
776 if ( code != -1 )
777 {
778 ShowOutput(cmd, output, _T("Output"));
779 ShowOutput(cmd, errors, _T("Errors"));
780 }
781 }
782 else // async exec
783 {
784 MyPipedProcess *process = new MyPipedProcess(this, cmd);
785 if ( !wxExecute(cmd, wxEXEC_ASYNC, process) )
786 {
787 wxLogError(_T("Execution of '%s' failed."), cmd.c_str());
788
789 delete process;
790 }
791 else
792 {
793 AddPipedProcess(process);
794 }
795 }
796
797 m_cmdLast = cmd;
798 }
799
800 void MyFrame::OnExecWithPipe(wxCommandEvent& WXUNUSED(event))
801 {
802 if ( !m_cmdLast )
803 m_cmdLast = _T("tr [a-z] [A-Z]");
804
805 wxString cmd = wxGetTextFromUser(_T("Enter the command: "),
806 DIALOG_TITLE,
807 m_cmdLast);
808
809 if ( !cmd )
810 return;
811
812 wxString input = wxGetTextFromUser(_T("Enter the string to send to it: "),
813 DIALOG_TITLE);
814 if ( !input )
815 return;
816
817 // always execute the filter asynchronously
818 MyPipedProcess2 *process = new MyPipedProcess2(this, cmd, input);
819 long pid = wxExecute(cmd, wxEXEC_ASYNC, process);
820 if ( pid )
821 {
822 wxLogStatus(_T("Process %ld (%s) launched."), pid, cmd.c_str());
823
824 AddPipedProcess(process);
825 }
826 else
827 {
828 wxLogError(_T("Execution of '%s' failed."), cmd.c_str());
829
830 delete process;
831 }
832
833 m_cmdLast = cmd;
834 }
835
836 void MyFrame::OnPOpen(wxCommandEvent& WXUNUSED(event))
837 {
838 wxString cmd = wxGetTextFromUser(_T("Enter the command to launch: "),
839 DIALOG_TITLE,
840 m_cmdLast);
841 if ( cmd.empty() )
842 return;
843
844 wxProcess *process = wxProcess::Open(cmd);
845 if ( !process )
846 {
847 wxLogError(_T("Failed to launch the command."));
848 return;
849 }
850
851 wxLogVerbose(_T("PID of the new process: %ld"), process->GetPid());
852
853 wxOutputStream *out = process->GetOutputStream();
854 if ( !out )
855 {
856 wxLogError(_T("Failed to connect to child stdin"));
857 return;
858 }
859
860 wxInputStream *in = process->GetInputStream();
861 if ( !in )
862 {
863 wxLogError(_T("Failed to connect to child stdout"));
864 return;
865 }
866
867 new MyPipeFrame(this, cmd, process);
868 }
869
870 void MyFrame::OnFileExec(wxCommandEvent& WXUNUSED(event))
871 {
872 static wxString s_filename;
873
874 wxString filename;
875
876 #if wxUSE_FILEDLG
877 filename = wxLoadFileSelector(_T("any file"), wxEmptyString, s_filename, this);
878 #else // !wxUSE_FILEDLG
879 filename = wxGetTextFromUser(_T("Enter the file name"), _T("exec sample"),
880 s_filename, this);
881 #endif // wxUSE_FILEDLG/!wxUSE_FILEDLG
882
883 if ( filename.empty() )
884 return;
885
886 s_filename = filename;
887
888 wxString ext = filename.AfterLast(_T('.'));
889 wxFileType *ft = wxTheMimeTypesManager->GetFileTypeFromExtension(ext);
890 if ( !ft )
891 {
892 wxLogError(_T("Impossible to determine the file type for extension '%s'"),
893 ext.c_str());
894 return;
895 }
896
897 wxString cmd;
898 bool ok = ft->GetOpenCommand(&cmd,
899 wxFileType::MessageParameters(filename));
900 delete ft;
901 if ( !ok )
902 {
903 wxLogError(_T("Impossible to find out how to open files of extension '%s'"),
904 ext.c_str());
905 return;
906 }
907
908 DoAsyncExec(cmd);
909 }
910
911 void MyFrame::OnOpenURL(wxCommandEvent& WXUNUSED(event))
912 {
913 static wxString s_filename(_T("http://www.wxwidgets.org/"));
914
915 wxString filename = wxGetTextFromUser
916 (
917 _T("Enter the URL"),
918 _T("exec sample"),
919 s_filename,
920 this
921 );
922
923 if ( filename.empty() )
924 return;
925
926 s_filename = filename;
927
928 if ( !wxLaunchDefaultBrowser(s_filename) )
929 wxLogError(_T("Failed to open URL \"%s\""), s_filename.c_str());
930 }
931
932 // ----------------------------------------------------------------------------
933 // DDE stuff
934 // ----------------------------------------------------------------------------
935
936 #ifdef __WINDOWS__
937
938 bool MyFrame::GetDDEServer()
939 {
940 wxString server = wxGetTextFromUser(_T("Server to connect to:"),
941 DIALOG_TITLE, m_server);
942 if ( !server )
943 return false;
944
945 m_server = server;
946
947 wxString topic = wxGetTextFromUser(_T("DDE topic:"), DIALOG_TITLE, m_topic);
948 if ( !topic )
949 return false;
950
951 m_topic = topic;
952
953 wxString cmd = wxGetTextFromUser(_T("DDE command:"), DIALOG_TITLE, m_cmdDde);
954 if ( !cmd )
955 return false;
956
957 m_cmdDde = cmd;
958
959 return true;
960 }
961
962 void MyFrame::OnDDEExec(wxCommandEvent& WXUNUSED(event))
963 {
964 if ( !GetDDEServer() )
965 return;
966
967 wxDDEClient client;
968 wxConnectionBase *conn = client.MakeConnection(wxEmptyString, m_server, m_topic);
969 if ( !conn )
970 {
971 wxLogError(_T("Failed to connect to the DDE server '%s'."),
972 m_server.c_str());
973 }
974 else
975 {
976 if ( !conn->Execute(m_cmdDde) )
977 {
978 wxLogError(_T("Failed to execute command '%s' via DDE."),
979 m_cmdDde.c_str());
980 }
981 else
982 {
983 wxLogStatus(_T("Successfully executed DDE command"));
984 }
985 }
986 }
987
988 void MyFrame::OnDDERequest(wxCommandEvent& WXUNUSED(event))
989 {
990 if ( !GetDDEServer() )
991 return;
992
993 wxDDEClient client;
994 wxConnectionBase *conn = client.MakeConnection(wxEmptyString, m_server, m_topic);
995 if ( !conn )
996 {
997 wxLogError(_T("Failed to connect to the DDE server '%s'."),
998 m_server.c_str());
999 }
1000 else
1001 {
1002 if ( !conn->Request(m_cmdDde) )
1003 {
1004 wxLogError(_T("Failed to send request '%s' via DDE."),
1005 m_cmdDde.c_str());
1006 }
1007 else
1008 {
1009 wxLogStatus(_T("Successfully sent DDE request."));
1010 }
1011 }
1012 }
1013
1014 #endif // __WINDOWS__
1015
1016 // ----------------------------------------------------------------------------
1017 // various helpers
1018 // ----------------------------------------------------------------------------
1019
1020 // input polling
1021 void MyFrame::OnIdle(wxIdleEvent& event)
1022 {
1023 size_t count = m_running.GetCount();
1024 for ( size_t n = 0; n < count; n++ )
1025 {
1026 if ( m_running[n]->HasInput() )
1027 {
1028 event.RequestMore();
1029 }
1030 }
1031 }
1032
1033 void MyFrame::OnTimer(wxTimerEvent& WXUNUSED(event))
1034 {
1035 wxWakeUpIdle();
1036 }
1037
1038 void MyFrame::OnProcessTerminated(MyPipedProcess *process)
1039 {
1040 RemovePipedProcess(process);
1041 }
1042
1043 void MyFrame::OnAsyncTermination(MyProcess *process)
1044 {
1045 m_allAsync.Remove(process);
1046
1047 delete process;
1048 }
1049
1050 void MyFrame::AddPipedProcess(MyPipedProcess *process)
1051 {
1052 if ( m_running.IsEmpty() )
1053 {
1054 // we want to start getting the timer events to ensure that a
1055 // steady stream of idle events comes in -- otherwise we
1056 // wouldn't be able to poll the child process input
1057 m_timerIdleWakeUp.Start(100);
1058 }
1059 //else: the timer is already running
1060
1061 m_running.Add(process);
1062 m_allAsync.Add(process);
1063 }
1064
1065 void MyFrame::RemovePipedProcess(MyPipedProcess *process)
1066 {
1067 m_running.Remove(process);
1068
1069 if ( m_running.IsEmpty() )
1070 {
1071 // we don't need to get idle events all the time any more
1072 m_timerIdleWakeUp.Stop();
1073 }
1074 }
1075
1076 void MyFrame::ShowOutput(const wxString& cmd,
1077 const wxArrayString& output,
1078 const wxString& title)
1079 {
1080 size_t count = output.GetCount();
1081 if ( !count )
1082 return;
1083
1084 m_lbox->Append(wxString::Format(_T("--- %s of '%s' ---"),
1085 title.c_str(), cmd.c_str()));
1086
1087 for ( size_t n = 0; n < count; n++ )
1088 {
1089 m_lbox->Append(output[n]);
1090 }
1091
1092 m_lbox->Append(wxString::Format(_T("--- End of %s ---"),
1093 title.Lower().c_str()));
1094 }
1095
1096 // ----------------------------------------------------------------------------
1097 // MyProcess
1098 // ----------------------------------------------------------------------------
1099
1100 void MyProcess::OnTerminate(int pid, int status)
1101 {
1102 wxLogStatus(m_parent, _T("Process %u ('%s') terminated with exit code %d."),
1103 pid, m_cmd.c_str(), status);
1104
1105 m_parent->OnAsyncTermination(this);
1106 }
1107
1108 // ----------------------------------------------------------------------------
1109 // MyPipedProcess
1110 // ----------------------------------------------------------------------------
1111
1112 bool MyPipedProcess::HasInput()
1113 {
1114 bool hasInput = false;
1115
1116 if ( IsInputAvailable() )
1117 {
1118 wxTextInputStream tis(*GetInputStream());
1119
1120 // this assumes that the output is always line buffered
1121 wxString msg;
1122 msg << m_cmd << _T(" (stdout): ") << tis.ReadLine();
1123
1124 m_parent->GetLogListBox()->Append(msg);
1125
1126 hasInput = true;
1127 }
1128
1129 if ( IsErrorAvailable() )
1130 {
1131 wxTextInputStream tis(*GetErrorStream());
1132
1133 // this assumes that the output is always line buffered
1134 wxString msg;
1135 msg << m_cmd << _T(" (stderr): ") << tis.ReadLine();
1136
1137 m_parent->GetLogListBox()->Append(msg);
1138
1139 hasInput = true;
1140 }
1141
1142 return hasInput;
1143 }
1144
1145 void MyPipedProcess::OnTerminate(int pid, int status)
1146 {
1147 // show the rest of the output
1148 while ( HasInput() )
1149 ;
1150
1151 m_parent->OnProcessTerminated(this);
1152
1153 MyProcess::OnTerminate(pid, status);
1154 }
1155
1156 // ----------------------------------------------------------------------------
1157 // MyPipedProcess2
1158 // ----------------------------------------------------------------------------
1159
1160 bool MyPipedProcess2::HasInput()
1161 {
1162 if ( !m_input.empty() )
1163 {
1164 wxTextOutputStream os(*GetOutputStream());
1165 os.WriteString(m_input);
1166
1167 CloseOutput();
1168 m_input.clear();
1169
1170 // call us once again - may be we'll have output
1171 return true;
1172 }
1173
1174 return MyPipedProcess::HasInput();
1175 }
1176
1177 // ============================================================================
1178 // MyPipeFrame implementation
1179 // ============================================================================
1180
1181 MyPipeFrame::MyPipeFrame(wxFrame *parent,
1182 const wxString& cmd,
1183 wxProcess *process)
1184 : wxFrame(parent, wxID_ANY, cmd),
1185 m_process(process),
1186 // in a real program we'd check that the streams are !NULL here
1187 m_out(*process->GetOutputStream()),
1188 m_in(*process->GetInputStream()),
1189 m_err(*process->GetErrorStream())
1190 {
1191 m_process->SetNextHandler(this);
1192
1193 wxPanel *panel = new wxPanel(this, wxID_ANY);
1194
1195 m_textOut = new wxTextCtrl(panel, wxID_ANY, wxEmptyString,
1196 wxDefaultPosition, wxDefaultSize,
1197 wxTE_PROCESS_ENTER);
1198 m_textIn = new wxTextCtrl(panel, wxID_ANY, wxEmptyString,
1199 wxDefaultPosition, wxDefaultSize,
1200 wxTE_MULTILINE | wxTE_RICH);
1201 m_textIn->SetEditable(false);
1202 m_textErr = new wxTextCtrl(panel, wxID_ANY, wxEmptyString,
1203 wxDefaultPosition, wxDefaultSize,
1204 wxTE_MULTILINE | wxTE_RICH);
1205 m_textErr->SetEditable(false);
1206
1207 wxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
1208 sizerTop->Add(m_textOut, 0, wxGROW | wxALL, 5);
1209
1210 wxSizer *sizerBtns = new wxBoxSizer(wxHORIZONTAL);
1211 sizerBtns->
1212 Add(new wxButton(panel, Exec_Btn_Send, _T("&Send")), 0, wxALL, 5);
1213 sizerBtns->
1214 Add(new wxButton(panel, Exec_Btn_SendFile, _T("&File...")), 0, wxALL, 5);
1215 sizerBtns->
1216 Add(new wxButton(panel, Exec_Btn_Get, _T("&Get")), 0, wxALL, 5);
1217 sizerBtns->
1218 Add(new wxButton(panel, Exec_Btn_Close, _T("&Close")), 0, wxALL, 5);
1219
1220 sizerTop->Add(sizerBtns, 0, wxCENTRE | wxALL, 5);
1221 sizerTop->Add(m_textIn, 1, wxGROW | wxALL, 5);
1222 sizerTop->Add(m_textErr, 1, wxGROW | wxALL, 5);
1223
1224 panel->SetSizer(sizerTop);
1225 sizerTop->Fit(this);
1226
1227 Show();
1228 }
1229
1230 void MyPipeFrame::OnBtnSendFile(wxCommandEvent& WXUNUSED(event))
1231 {
1232 #if wxUSE_FILEDLG
1233 wxFileDialog filedlg(this, _T("Select file to send"));
1234 if ( filedlg.ShowModal() != wxID_OK )
1235 return;
1236
1237 wxFFile file(filedlg.GetFilename(), _T("r"));
1238 wxString data;
1239 if ( !file.IsOpened() || !file.ReadAll(&data) )
1240 return;
1241
1242 // can't write the entire string at once, this risk overflowing the pipe
1243 // and we would dead lock
1244 size_t len = data.length();
1245 const wxChar *pc = data.c_str();
1246 while ( len )
1247 {
1248 const size_t CHUNK_SIZE = 4096;
1249 m_out.Write(pc, len > CHUNK_SIZE ? CHUNK_SIZE : len);
1250
1251 // note that not all data could have been written as we don't block on
1252 // the write end of the pipe
1253 const size_t lenChunk = m_out.LastWrite();
1254
1255 pc += lenChunk;
1256 len -= lenChunk;
1257
1258 DoGet();
1259 }
1260 #endif // wxUSE_FILEDLG
1261 }
1262
1263 void MyPipeFrame::DoGet()
1264 {
1265 // we don't have any way to be notified when any input appears on the
1266 // stream so we have to poll it :-(
1267 DoGetFromStream(m_textIn, m_in);
1268 DoGetFromStream(m_textErr, m_err);
1269 }
1270
1271 void MyPipeFrame::DoGetFromStream(wxTextCtrl *text, wxInputStream& in)
1272 {
1273 while ( in.CanRead() )
1274 {
1275 wxChar buffer[4096];
1276 buffer[in.Read(buffer, WXSIZEOF(buffer) - 1).LastRead()] = _T('\0');
1277
1278 text->AppendText(buffer);
1279 }
1280 }
1281
1282 void MyPipeFrame::DoClose()
1283 {
1284 m_process->CloseOutput();
1285
1286 DisableInput();
1287 }
1288
1289 void MyPipeFrame::DisableInput()
1290 {
1291 m_textOut->SetEditable(false);
1292 FindWindow(Exec_Btn_Send)->Disable();
1293 FindWindow(Exec_Btn_SendFile)->Disable();
1294 FindWindow(Exec_Btn_Close)->Disable();
1295 }
1296
1297 void MyPipeFrame::DisableOutput()
1298 {
1299 FindWindow(Exec_Btn_Get)->Disable();
1300 }
1301
1302 void MyPipeFrame::OnClose(wxCloseEvent& event)
1303 {
1304 if ( m_process )
1305 {
1306 // we're not interested in getting the process termination notification
1307 // if we are closing it ourselves
1308 wxProcess *process = m_process;
1309 m_process = NULL;
1310 process->SetNextHandler(NULL);
1311
1312 process->CloseOutput();
1313 }
1314
1315 event.Skip();
1316 }
1317
1318 void MyPipeFrame::OnProcessTerm(wxProcessEvent& WXUNUSED(event))
1319 {
1320 DoGet();
1321
1322 delete m_process;
1323 m_process = NULL;
1324
1325 wxLogWarning(_T("The other process has terminated, closing"));
1326
1327 DisableInput();
1328 DisableOutput();
1329 }