[Libreoffice] [REVIEW] Make --help and --version work even without $DISPLAY

 Hello,

 could somebody please review the attached patch? While digging for something 
else I noticed that --version doesn't work without $DISPLAY, recalled seeing 
a bugreport about that somewhere [*] and thought how hard that could be (oh, 
silly me). I swear this is the simplest and safest patch I've managed to come 
up with :-/, but since it still moves around initialization of some stuff, 
I'd like somebody else to check. Thanks.

[*] Speaking of the bugreport, does it ring a bell to somebody? I can't find 
it now.

-- 
 Lubos Lunak
 l.lunak@suse.cz

diff --git a/desktop/inc/app.hxx b/desktop/inc/app.hxx
index ee30123..14aff69 100644
--- a/desktop/inc/app.hxx
+++ b/desktop/inc/app.hxx
@@ -137,6 +137,10 @@ class Desktop : public Application
         void                    SetSplashScreenText( const ::rtl::OUString& rText );
         void                    SetSplashScreenProgress( sal_Int32 );
 
+#ifdef UNX
+        void EarlyCommandLineArgsPrepare();
+#endif
+
     private:
         // Bootstrap methods
         ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory > 
CreateApplicationServiceManager();
diff --git a/desktop/source/app/app.cxx b/desktop/source/app/app.cxx
index 89c8e2a..d41df1c 100644
--- a/desktop/source/app/app.cxx
+++ b/desktop/source/app/app.cxx
@@ -671,14 +671,17 @@ void Desktop::Init()
     }
     
     // create service factory...
-    Reference < XMultiServiceFactory > rSMgr = CreateApplicationServiceManager();
-    if( rSMgr.is() )
+    if( !::comphelper::getProcessServiceFactory().is()) // may be set from 
Desktop::EarlyCommandLineArgsPrepare()
     {
-        ::comphelper::setProcessServiceFactory( rSMgr );
-    }
-    else
-    {
-        SetBootstrapError( BE_UNO_SERVICEMANAGER );
+        Reference < XMultiServiceFactory > rSMgr = CreateApplicationServiceManager();
+        if( rSMgr.is() )
+        {
+            ::comphelper::setProcessServiceFactory( rSMgr );
+        }
+        else
+        {
+            SetBootstrapError( BE_UNO_SERVICEMANAGER );
+        }
     }
 
     if ( GetBootstrapError() == BE_OK )
@@ -696,18 +699,6 @@ void Desktop::Init()
     if ( GetBootstrapError() == BE_OK )
     {
         CommandLineArgs* pCmdLineArgs = GetCommandLineArgs();
-#ifdef UNX
-    //  check whether we need to print cmdline help
-    if ( pCmdLineArgs->IsHelp() ) {
-        displayCmdlineHelp();
-        SetBootstrapStatus(BS_TERMINATE);
-    }
-    else if ( pCmdLineArgs->IsVersion() )
-    {
-        displayVersion();
-        SetBootstrapStatus(BS_TERMINATE);
-    }
-#endif
         // start ipc thread only for non-remote offices
         RTL_LOGFILE_CONTEXT( aLog2, "desktop (cd100003) ::OfficeIPCThread::EnableOfficeIPCThread" 
);
         OfficeIPCThread::Status aStatus = OfficeIPCThread::EnableOfficeIPCThread();
@@ -736,6 +727,19 @@ void Desktop::InitFinished()
     CloseSplashScreen();
 }
 
+#ifdef UNX
+// GetCommandLineArgs() requires this code to work, otherwise it will abort, and
+// on Unix command line args needs to be checked before Desktop::Init()
+void Desktop::EarlyCommandLineArgsPrepare()
+{
+    Reference < XMultiServiceFactory > rSMgr = CreateApplicationServiceManager();
+    if( rSMgr.is() )
+    {
+        ::comphelper::setProcessServiceFactory( rSMgr );
+    }
+}
+#endif
+
 void Desktop::DeInit()
 {
     RTL_LOGFILE_CONTEXT( aLog, "desktop (cd100003) ::Desktop::DeInit" );
diff --git a/desktop/source/app/sofficemain.cxx b/desktop/source/app/sofficemain.cxx
index 3d4a803..a975337 100644
--- a/desktop/source/app/sofficemain.cxx
+++ b/desktop/source/app/sofficemain.cxx
@@ -30,6 +30,8 @@
 #include "precompiled_desktop.hxx"
 
 #include "app.hxx"
+#include "cmdlineargs.hxx"
+#include "cmdlinehelp.hxx"
 
 #include <rtl/logfile.hxx>
 #include <tools/extendapplicationenvironment.hxx>
@@ -47,6 +49,21 @@ extern "C" int soffice_main()
     desktop::Desktop aDesktop;
     // This string is used during initialization of the Gtk+ VCL module
     aDesktop.SetAppName( rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("soffice")) );
+#ifdef UNX
+    // handle --version and --help already here, otherwise they would be handled
+    // after VCL initialization that might fail if $DISPLAY is not set
+    aDesktop.EarlyCommandLineArgsPrepare();
+    desktop::CommandLineArgs* pCmdLineArgs = aDesktop.GetCommandLineArgs();
+    if ( pCmdLineArgs->IsHelp() ) {
+        desktop::displayCmdlineHelp();
+        return EXIT_SUCCESS;
+    }
+    else if ( pCmdLineArgs->IsVersion() )
+    {
+        desktop::displayVersion();
+        return EXIT_SUCCESS;
+    }
+#endif
     return SVMain();
 }