Fix for GetValue

[wxWidgets.git] / src / common / process.cpp

diff --git a/src/common/process.cpp b/src/common/process.cpp
index e573fe8e0d995ba5682845f407c927d3a27cda94..7c23c4762076117016c77d6cfdeefef5097bdd95 100644 (file)
--- a/src/common/process.cpp
+++ b/src/common/process.cpp
@@ -9,6 +9,14 @@
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
 #ifdef __GNUG__
     #pragma implementation "process.h"
 #endif
@@ -20,32 +28,66 @@
     #pragma hdrstop
 #endif
 
-#ifndef WX_PRECOMP
-    #include "wx/defs.h"
-#endif
-
 #include "wx/process.h"
 
+// ----------------------------------------------------------------------------
+// event tables and such
+// ----------------------------------------------------------------------------
+
+DEFINE_EVENT_TYPE(wxEVT_END_PROCESS)
+
 IMPLEMENT_DYNAMIC_CLASS(wxProcess, wxEvtHandler)
 IMPLEMENT_DYNAMIC_CLASS(wxProcessEvent, wxEvent)
 
-wxProcess::wxProcess(wxEvtHandler *parent, bool needPipe, int id)
+// ============================================================================
+// wxProcess implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxProcess creation
+// ----------------------------------------------------------------------------
+
+void wxProcess::Init(wxEvtHandler *parent, int id, int flags)
 {
-    if (parent)
+    if ( parent )
         SetNextHandler(parent);
 
     m_id         = id;
-    m_needPipe   = needPipe;
-    m_in_stream  = NULL;
-    m_out_stream = NULL;
+    m_redirect   = (flags & wxPROCESS_REDIRECT) != 0;
+
+#if wxUSE_STREAMS
+    m_inputStream  = NULL;
+    m_errorStream  = NULL;
+    m_outputStream = NULL;
+#endif // wxUSE_STREAMS
+}
+
+/* static */
+wxProcess *wxProcess::Open(const wxString& cmd, int flags)
+{
+    wxASSERT_MSG( !(flags & wxEXEC_SYNC), wxT("wxEXEC_SYNC should not be used." ));
+    wxProcess *process = new wxProcess(wxPROCESS_REDIRECT);
+    if ( !wxExecute(cmd, flags, process) )
+    {
+        // couldn't launch the process
+        delete process;
+        return NULL;
+    }
+
+    return process;
 }
 
+// ----------------------------------------------------------------------------
+// wxProcess termination
+// ----------------------------------------------------------------------------
+
 wxProcess::~wxProcess()
 {
-    if (m_in_stream)
-      delete m_in_stream;
-    if (m_out_stream)
-      delete m_out_stream;
+#if wxUSE_STREAMS
+    delete m_inputStream;
+    delete m_errorStream;
+    delete m_outputStream;
+#endif // wxUSE_STREAMS
 }
 
 void wxProcess::OnTerminate(int pid, int status)
@@ -63,23 +105,53 @@ void wxProcess::Detach()
     SetNextHandler(NULL);
 }
 
-void wxProcess::SetPipeStreams(wxInputStream *in_stream, wxOutputStream *out_stream)
-{
-    m_in_stream  = in_stream;
-    m_out_stream = out_stream;
-}
+// ----------------------------------------------------------------------------
+// process IO redirection
+// ----------------------------------------------------------------------------
 
-wxInputStream *wxProcess::GetInputStream() const
+#if wxUSE_STREAMS
+
+void wxProcess::SetPipeStreams(wxInputStream *inputSstream,
+                               wxOutputStream *outputStream,
+                               wxInputStream *errorStream)
 {
-    return m_in_stream;
+    m_inputStream  = inputSstream;
+    m_errorStream  = errorStream;
+    m_outputStream = outputStream;
 }
 
-wxOutputStream *wxProcess::GetOutputStream() const
+#endif // wxUSE_STREAMS
+
+// ----------------------------------------------------------------------------
+// process killing
+// ----------------------------------------------------------------------------
+
+/* static */
+wxKillError wxProcess::Kill(int pid, wxSignal sig)
 {
-    return m_out_stream;
+    wxKillError rc;
+    (void)wxKill(pid, sig, &rc);
+
+    return rc;
 }
 
-bool wxProcess::NeedPipe() const
+/* static */
+bool wxProcess::Exists(int pid)
 {
-    return m_needPipe;
+    switch ( Kill(pid, wxSIGNONE) )
+    {
+        case wxKILL_OK:
+        case wxKILL_ACCESS_DENIED:
+            return TRUE;
+
+        default:
+        case wxKILL_ERROR:
+        case wxKILL_BAD_SIGNAL:
+            wxFAIL_MSG( _T("unexpected wxProcess::Kill() return code") );
+            // fall through
+
+        case wxKILL_NO_PROCESS:
+            return FALSE;
+    }
 }
+