#include "wx/log.h"
#ifdef __WIN32__
+ #include "wx/stream.h"
#include "wx/process.h"
#endif
#endif
#include <stdarg.h>
+#if wxUSE_IPC
+ #include "wx/dde.h" // for WX_DDE hack in wxExecute
+#endif // wxUSE_IPC
+
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
bool state; // set to FALSE when the process finishes
};
+
+#ifdef __WIN32__
+// ----------------------------------------------------------------------------
+// wxPipeStreams
+// ----------------------------------------------------------------------------
+
+class wxPipeInputStream: public wxInputStream {
+public:
+ wxPipeInputStream(HANDLE hInput);
+ ~wxPipeInputStream();
+
+protected:
+ size_t OnSysRead(void *buffer, size_t len);
+
+protected:
+ HANDLE m_hInput;
+};
+
+class wxPipeOutputStream: public wxOutputStream {
+public:
+ wxPipeOutputStream(HANDLE hOutput);
+ ~wxPipeOutputStream();
+
+protected:
+ size_t OnSysWrite(const void *buffer, size_t len);
+
+protected:
+ HANDLE m_hOutput;
+};
+
+// ==================
+// wxPipeInputStream
+// ==================
+
+wxPipeInputStream::wxPipeInputStream(HANDLE hInput)
+{
+ m_hInput = hInput;
+}
+
+wxPipeInputStream::~wxPipeInputStream()
+{
+ ::CloseHandle(m_hInput);
+}
+
+size_t wxPipeInputStream::OnSysRead(void *buffer, size_t len)
+{
+ DWORD bytesRead;
+
+ m_lasterror = wxSTREAM_NOERROR;
+ if (! ::ReadFile(m_hInput, buffer, len, &bytesRead, NULL) ) {
+ if (GetLastError() == ERROR_BROKEN_PIPE)
+ m_lasterror = wxSTREAM_EOF;
+ else
+ m_lasterror = wxSTREAM_READ_ERROR;
+ }
+ return bytesRead;
+}
+
+// ==================
+// wxPipeOutputStream
+// ==================
+
+wxPipeOutputStream::wxPipeOutputStream(HANDLE hOutput)
+{
+ m_hOutput = hOutput;
+}
+
+wxPipeOutputStream::~wxPipeOutputStream()
+{
+ ::CloseHandle(m_hOutput);
+}
+
+size_t wxPipeOutputStream::OnSysWrite(const void *buffer, size_t len)
+{
+ DWORD bytesRead;
+
+ m_lasterror = wxSTREAM_NOERROR;
+ if (! ::WriteFile(m_hOutput, buffer, len, &bytesRead, NULL) ) {
+ if (GetLastError() == ERROR_BROKEN_PIPE)
+ m_lasterror = wxSTREAM_EOF;
+ else
+ m_lasterror = wxSTREAM_READ_ERROR;
+ }
+ return bytesRead;
+}
+
+#endif // __WIN32__
+
// ============================================================================
// implementation
// ============================================================================
// asynchronous execution - we should do the clean up
delete data;
}
- }
- return 0;
+ return 0;
+ }
+ else
+ {
+ return DefWindowProc(hWnd, message, wParam, lParam);
+ }
}
-#endif
+#endif // Win32
-long wxExecute(const wxString& command, bool sync, wxProcess *handler)
+long wxExecute(const wxString& cmd, bool sync, wxProcess *handler)
{
- wxCHECK_MSG( !!command, 0, wxT("empty command in wxExecute") );
+ wxCHECK_MSG( !!cmd, 0, wxT("empty command in wxExecute") );
+
+ wxString command;
+#if wxUSE_IPC
+ // DDE hack: this is really not pretty, but we need to allow this for
+ // transparent handling of DDE servers in wxMimeTypesManager. Usually it
+ // returns the command which should be run to view/open/... a file of the
+ // given type. Sometimes, however, this command just launches the server
+ // and an additional DDE request must be made to really open the file. To
+ // keep all this well hidden from the application, we allow a special form
+ // of command: WX_DDE:<command>:DDE_SERVER:DDE_TOPIC:DDE_COMMAND in which
+ // case we execute just <command> and process the rest below
+ wxString ddeServer, ddeTopic, ddeCommand;
+ static const size_t lenDdePrefix = 7; // strlen("WX_DDE:")
+ if ( cmd.Left(lenDdePrefix) == _T("WX_DDE#") )
+ {
+ const wxChar *p = cmd.c_str() + 7;
+ while ( *p && *p != _T('#') )
+ {
+ command += *p++;
+ }
+
+ if ( *p )
+ {
+ // skip '#'
+ p++;
+ }
+ else
+ {
+ wxFAIL_MSG(_T("invalid WX_DDE command in wxExecute"));
+ }
+
+ while ( *p && *p != _T('#') )
+ {
+ ddeServer += *p++;
+ }
+
+ if ( *p )
+ {
+ // skip '#'
+ p++;
+ }
+ else
+ {
+ wxFAIL_MSG(_T("invalid WX_DDE command in wxExecute"));
+ }
+
+ while ( *p && *p != _T('#') )
+ {
+ ddeTopic += *p++;
+ }
+
+ if ( *p )
+ {
+ // skip '#'
+ p++;
+ }
+ else
+ {
+ wxFAIL_MSG(_T("invalid WX_DDE command in wxExecute"));
+ }
+
+ while ( *p )
+ {
+ ddeCommand += *p++;
+ }
+ }
+ else
+#endif // wxUSE_IPC
+ {
+ // no DDE
+ command = cmd;
+ }
#if defined(__WIN32__) && !defined(__TWIN32__)
// the old code is disabled because we really need a process handle
// only reached for space not inside quotes
break;
}
-
wxString commandArgs = pc;
wxWindow *winTop = wxTheApp->GetTopWindow();
return result;
#else // 1
+
+ HANDLE hpipeRead[2];
+ HANDLE hpipeWrite[2];
+ HANDLE hStdIn = INVALID_HANDLE_VALUE;
+ HANDLE hStdOut = INVALID_HANDLE_VALUE;
+
+ // we need to inherit handles in the child process if we want to redirect
+ // its IO
+ BOOL inheritHandles = FALSE;
+
+ // open the pipes to which child process IO will be redirected if needed
+ if ( handler && handler->IsRedirected() )
+ {
+ SECURITY_ATTRIBUTES security;
+
+ security.nLength = sizeof(security);
+ security.lpSecurityDescriptor = NULL;
+ security.bInheritHandle = TRUE;
+
+ if ( !::CreatePipe(&hpipeRead[0], &hpipeRead[1], &security, 0) )
+ {
+ wxLogSysError(_("Can't create the inter-process read pipe"));
+
+ return 0;
+ }
+
+ if ( !::CreatePipe(&hpipeWrite[0], &hpipeWrite[1], &security, 0) )
+ {
+ ::CloseHandle(hpipeRead[0]);
+ ::CloseHandle(hpipeRead[1]);
+
+ wxLogSysError(_("Can't create the inter-process write pipe"));
+
+ return 0;
+ }
+
+ // We need to save the old stdio handles to restore them after the call
+ // to CreateProcess
+ hStdIn = ::GetStdHandle(STD_INPUT_HANDLE);
+ hStdOut = ::GetStdHandle(STD_OUTPUT_HANDLE);
+
+ if ( !::SetStdHandle(STD_INPUT_HANDLE, hpipeRead[0]) ||
+ !::SetStdHandle(STD_OUTPUT_HANDLE, hpipeWrite[1]) )
+ {
+ wxLogDebug(_T("Failed to change stdin/out handles"));
+ }
+
+ inheritHandles = TRUE;
+ }
+
// create the process
STARTUPINFO si;
wxZeroMemory(si);
(wxChar *)command.c_str(), // full command line
NULL, // security attributes: defaults for both
NULL, // the process and its main thread
- FALSE, // don't inherit handles
- CREATE_DEFAULT_ERROR_MODE, // flags
+ inheritHandles, // inherit handles if we need pipes
+ CREATE_DEFAULT_ERROR_MODE |
+ CREATE_SUSPENDED, // flags
NULL, // environment (use the same)
NULL, // current directory (use the same)
&si, // startup info (unused here)
&pi // process info
) == 0 )
{
+ if ( inheritHandles )
+ {
+ ::CloseHandle(hpipeWrite[0]);
+ ::CloseHandle(hpipeWrite[1]);
+ ::CloseHandle(hpipeRead[0]);
+ ::CloseHandle(hpipeRead[1]);
+ }
+
wxLogSysError(_("Execution of command '%s' failed"), command.c_str());
return 0;
}
- // close unneeded handle
- if ( !::CloseHandle(pi.hThread) )
- wxLogLastError("CloseHandle(hThread)");
+ // Restore the old stdio handles
+ if ( inheritHandles )
+ {
+ if ( !::SetStdHandle(STD_INPUT_HANDLE, hStdIn) ||
+ !::SetStdHandle(STD_OUTPUT_HANDLE, hStdOut) )
+ {
+ wxLogDebug(_T("Failed to restore old stdin/out handles"));
+ }
+
+ // they're still opened in child process
+ ::CloseHandle(hpipeWrite[1]);
+ ::CloseHandle(hpipeRead[0]);
+
+ // We can now initialize the wxStreams
+ wxInputStream *inStream = new wxPipeInputStream(hpipeWrite[0]);
+ wxOutputStream *outStream = new wxPipeOutputStream(hpipeRead[1]);
+ handler->SetPipeStreams(inStream, outStream);
+ }
+
+ // register the class for the hidden window used for the notifications
if ( !gs_classForHiddenWindow )
{
gs_classForHiddenWindow = _T("wxHiddenWindow");
if ( !::RegisterClass(&wndclass) )
{
wxLogLastError("RegisterClass(hidden window)");
-
- return FALSE;
}
}
// create a hidden window to receive notification about process
// termination
HWND hwnd = ::CreateWindow(gs_classForHiddenWindow, NULL,
- 0, 0, 0, 0, 0, NULL,
+ WS_OVERLAPPEDWINDOW,
+ 0, 0, 0, 0, NULL,
(HMENU)NULL, wxGetInstance(), 0);
wxASSERT_MSG( hwnd, wxT("can't create a hidden window for wxExecute") );
data->state = sync;
if ( sync )
{
- wxASSERT_MSG( !handler, wxT("wxProcess param ignored for sync execution") );
-
+ // handler may be !NULL for capturing program output, but we don't use
+ // it wxExecuteData struct in this case
data->handler = NULL;
}
else
0,
&tid);
+ // resume process we created now - whether the thread creation succeeded or
+ // not
+ if ( ::ResumeThread(pi.hThread) == (DWORD)-1 )
+ {
+ // ignore it - what can we do?
+ wxLogLastError("ResumeThread in wxExecute");
+ }
+
+ // close unneeded handle
+ if ( !::CloseHandle(pi.hThread) )
+ wxLogLastError("CloseHandle(hThread)");
+
if ( !hThread )
{
wxLogLastError("CreateThread in wxExecute");
return pi.dwProcessId;
}
+#if wxUSE_IPC
+ // second part of DDE hack: now establish the DDE conversation with the
+ // just launched process
+ if ( !!ddeServer )
+ {
+ wxDDEClient client;
+ wxConnectionBase *conn = client.MakeConnection(_T(""),
+ ddeServer,
+ ddeTopic);
+ if ( !conn || !conn->Execute(ddeCommand) )
+ {
+ wxLogError(_("Couldn't launch DDE server '%s'."), command.c_str());
+ }
+ }
+#endif // wxUSE_IPC
+
if ( !sync )
{
// clean up will be done when the process terminates
return pi.dwProcessId;
}
- // waiting until command executed
+ // waiting until command executed (disable everything while doing it)
+#if wxUSE_GUI
+ {
+ wxBusyCursor bc;
+
+ wxWindowDisabler wd;
+#endif // wxUSE_GUI
+
while ( data->state )
wxYield();
+#if wxUSE_GUI
+ }
+#endif // wxUSE_GUI
+
DWORD dwExitCode = data->dwExitCode;
delete data;
projects / wxWidgets.git / blobdiff