no changes (0 -> NULL)

[wxWidgets.git] / include / wx / process.h

diff --git a/include/wx/process.h b/include/wx/process.h
index 67677f35d8c2948fa966094395a1baa41d58a32e..91c71032ebd3b171e7ceb3f40af4b9917ffeaf05 100644 (file)
--- a/include/wx/process.h
+++ b/include/wx/process.h
@@ -2,57 +2,136 @@
 // Name:        process.h
 // Purpose:     wxProcess class
 // Author:      Guilhem Lavaux
-// Modified by:
+// Modified by: Vadim Zeitlin to check error codes, added Detach() method
 // Created:     24/06/98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Guilhem Lavaux
-// Licence:    wxWindows license
+// Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_PROCESSH__
 #define _WX_PROCESSH__
 
 #ifdef __GNUG__
-#pragma interface "process.h"
+    #pragma interface "process.h"
 #endif
 
-#include "wx/defs.h"
-#include "wx/object.h"
 #include "wx/event.h"
 
-class WXDLLEXPORT wxProcess: public wxEvtHandler
+#if wxUSE_STREAMS
+    #include "wx/stream.h"
+#endif
+
+#include "wx/utils.h"       // for wxSignal
+
+// ----------------------------------------------------------------------------
+// A wxProcess object should be passed to wxExecute - than its OnTerminate()
+// function will be called when the process terminates.
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxProcess : public wxEvtHandler
 {
-  DECLARE_DYNAMIC_CLASS(wxProcess)
- public:
+public:
+    wxProcess(wxEvtHandler *parent = (wxEvtHandler *) NULL, int id = -1)
+        { Init(parent, id, FALSE); }
+    wxProcess(wxEvtHandler *parent, bool redirect)
+        { Init(parent, -1, redirect); }
+
+    virtual ~wxProcess();
+
+    // may be overridden to be notified about process termination
+    virtual void OnTerminate(int pid, int status);
+
+    // call this before passing the object to wxExecute() to redirect the
+    // launched process stdin/stdout, then use GetInputStream() and
+    // GetOutputStream() to get access to them
+    void Redirect() { m_redirect = TRUE; }
+    bool IsRedirected() const { return m_redirect; }
+
+    // detach from the parent - should be called by the parent if it's deleted
+    // before the process it started terminates
+    void Detach();
+
+#if wxUSE_STREAMS
+    // Pipe handling
+    wxInputStream *GetInputStream() const { return m_inputStream; }
+    wxInputStream *GetErrorStream() const { return m_errorStream; }
+    wxOutputStream *GetOutputStream() const { return m_outputStream; }
+
+    // close the output stream indicating that nothing more will be written
+    void CloseOutput() { delete m_outputStream; m_outputStream = NULL; }
 
-  wxProcess(wxEvtHandler *parent = NULL, int id = -1);
-  virtual ~wxProcess();
+    // implementation only (for wxExecute)
+    void SetPipeStreams(wxInputStream *inStream,
+                        wxOutputStream *outStream,
+                        wxInputStream *errStream);
+#endif // wxUSE_STREAMS
 
-  virtual void OnTerminate(int pid);
+    // kill the process with the given PID
+    static wxKillError Kill(int pid, wxSignal sig = wxSIGTERM);
 
- protected:
-  int m_id;
+    // test if the given process exists
+    static bool Exists(int pid);
+
+protected:
+    void Init(wxEvtHandler *parent, int id, bool redirect);
+
+    int m_id;
+
+#if wxUSE_STREAMS
+    wxInputStream  *m_inputStream,
+                   *m_errorStream;
+    wxOutputStream *m_outputStream;
+#endif // wxUSE_STREAMS
+
+    bool m_redirect;
+
+    DECLARE_DYNAMIC_CLASS(wxProcess)
 };
 
-// Process Event handling
+// ----------------------------------------------------------------------------
+// wxProcess events
+// ----------------------------------------------------------------------------
 
-class WXDLLEXPORT wxProcessEvent: public wxEvent
+BEGIN_DECLARE_EVENT_TYPES()
+    DECLARE_EVENT_TYPE(wxEVT_END_PROCESS, 440)
+END_DECLARE_EVENT_TYPES()
+
+class WXDLLEXPORT wxProcessEvent : public wxEvent
 {
-  DECLARE_DYNAMIC_CLASS(wxProcessEvent)
- public:
+public:
+    wxProcessEvent(int id = 0, int pid = 0, int exitcode = 0) : wxEvent(id)
+    {
+        m_eventType = wxEVT_END_PROCESS;
+        m_pid = pid;
+        m_exitcode = exitcode;
+    }
+
+    // accessors
+        // PID of process which terminated
+    int GetPid() { return m_pid; }
+
+        // the exit code
+    int GetExitCode() { return m_exitcode; }
+
+    // implement the base class pure virtual
+    virtual wxEvent *Clone() const { return new wxProcessEvent(*this); }
 
-  wxProcessEvent(int id = 0, int pid = -1);
-  
-  inline int GetPid() { return m_pid; }
-  inline void SetPid(int pid) { m_pid = pid; }
+public:
+    int m_pid,
+        m_exitcode;
 
- public:
-  int m_pid;
+    DECLARE_DYNAMIC_CLASS(wxProcessEvent)
 };
 
-typedef void (wxObject::*wxProcessEventFunction)(wxProcessEvent&);
+typedef void (wxEvtHandler::*wxProcessEventFunction)(wxProcessEvent&);
 
-#define EVT_END_PROCESS(id, func) { wxEVT_END_TERMINATE, id, -1, (wxObjectEvent) (wxEventFunction) (wxProcessEventFunction) & fn, NULL},
+#define EVT_END_PROCESS(id, func) \
+   DECLARE_EVENT_TABLE_ENTRY( \
+           wxEVT_END_PROCESS, id, -1, \
+           (wxObjectEventFunction) \
+           (wxEventFunction) \
+           (wxProcessEventFunction) & func, NULL),
 
 #endif
     // _WX_PROCESSH__