#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
// ============================================================================
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 h_readPipe[2];
+ HANDLE h_writePipe[2];
+ HANDLE h_oldreadPipe;
+ HANDLE h_oldwritePipe;
+ BOOL inheritHandles;
+
+ // ------------------------------------
+ // Pipe handling
+ // We are in the case of opening a pipe
+ inheritHandles = FALSE;
+ if (handler && handler->NeedPipe()) {
+ SECURITY_ATTRIBUTES security;
+
+ security.nLength = sizeof(security);
+ security.lpSecurityDescriptor = NULL;
+ security.bInheritHandle = TRUE;
+
+ if (! ::CreatePipe(&h_readPipe[0], &h_readPipe[1], &security, 0) ) {
+ wxLogSysError(_T("Can't create the inter-process read pipe"));
+
+ return 0;
+ }
+
+ if (! ::CreatePipe(&h_writePipe[0], &h_writePipe[1], &security, 0) ) {
+ wxLogSysError(_T("Can't create the inter-process read pipe"));
+
+ return 0;
+ }
+
+ // We need to save the old stdio handles to restore them after the call
+ // to CreateProcess
+ h_oldreadPipe = GetStdHandle(STD_INPUT_HANDLE);
+ h_oldwritePipe = GetStdHandle(STD_OUTPUT_HANDLE);
+
+ SetStdHandle(STD_INPUT_HANDLE, h_readPipe[0]);
+ SetStdHandle(STD_OUTPUT_HANDLE, h_writePipe[1]);
+
+ 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
+ inheritHandles, // inherit handles if we need pipes
CREATE_DEFAULT_ERROR_MODE |
CREATE_SUSPENDED, // flags
NULL, // environment (use the same)
&pi // process info
) == 0 )
{
+ if (inheritHandles) {
+ ::CloseHandle(h_writePipe[0]);
+ ::CloseHandle(h_writePipe[1]);
+ ::CloseHandle(h_readPipe[0]);
+ ::CloseHandle(h_readPipe[1]);
+ }
wxLogSysError(_("Execution of command '%s' failed"), command.c_str());
return 0;
}
+ // Restore the old stdio handles
+ if (inheritHandles) {
+ SetStdHandle(STD_INPUT_HANDLE, h_oldreadPipe);
+ SetStdHandle(STD_OUTPUT_HANDLE, h_oldwritePipe);
+
+ ::CloseHandle(h_writePipe[1]);
+ ::CloseHandle(h_readPipe[0]);
+ // We can now initialize the wxStreams
+ wxInputStream *processOutput = new wxPipeInputStream(h_writePipe[0]);
+ wxOutputStream *processInput = new wxPipeOutputStream(h_readPipe[1]);
+
+ handler->SetPipeStreams(processOutput, processInput);
+ }
+
// register the class for the hidden window used for the notifications
if ( !gs_classForHiddenWindow )
{
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
projects / wxWidgets.git / blobdiff