loplugin:nullptr (automatic rewrite)

Change-Id: I5bbef6c88255f3e8c740a5239a5010cf1251b7fa

15 files changed, 118 insertions, 118 deletions

diff --git a/extensions/source/plugin/base/context.cxx b/extensions/source/plugin/base/context.cxx
index 02e6871261c0..478562aa7035 100644
--- a/extensions/source/plugin/base/context.cxx
+++ b/extensions/source/plugin/base/context.cxx
@@ -273,7 +273,7 @@ FileSink::FileSink( const Reference< css::uno::XComponentContext >  & rxContext,
         m_xPlugin( plugin ),
         m_aTarget( target )
 {
-    osl::FileBase::createTempFile( 0, 0, &m_aFileName );
+    osl::FileBase::createTempFile( nullptr, nullptr, &m_aFileName );
     OString aFile = OUStringToOString( m_aFileName, osl_getThreadTextEncoding() );
     fp = fopen( aFile.getStr() , "wb" );
 
diff --git a/extensions/source/plugin/base/manager.cxx b/extensions/source/plugin/base/manager.cxx
index 8b1d120733e7..0fa54e367c12 100644
--- a/extensions/source/plugin/base/manager.cxx
+++ b/extensions/source/plugin/base/manager.cxx
@@ -59,7 +59,7 @@
 
 #include <cppuhelper/supportsservice.hxx>
 
-PluginManager* PluginManager::pManager = NULL;
+PluginManager* PluginManager::pManager = nullptr;
 
 PluginManager& PluginManager::get()
 {
@@ -154,7 +154,7 @@ XPlugin_Impl* XPluginManager_Impl::getXPluginFromNPP( NPP instance )
             return *iter;
     }
 
-    return NULL;
+    return nullptr;
 }
 
 XPlugin_Impl* XPluginManager_Impl::getPluginImplementation( const Reference< css::plugin::XPlugin >& plugin )
@@ -167,7 +167,7 @@ XPlugin_Impl* XPluginManager_Impl::getPluginImplementation( const Reference< css
             return *iter;
     }
 
-    return NULL;
+    return nullptr;
 }
 
 Sequence<css::plugin::PluginDescription> XPluginManager_Impl::getPluginDescriptions()
@@ -226,7 +226,7 @@ Reference< css::plugin::XPlugin >  XPluginManager_Impl::createPluginFromURL( con
     if( ! pImpl->getPluginComm() )
     {
         pImpl->dispose();
-        xRef = NULL;
+        xRef = nullptr;
     }
 
     return xRef;
diff --git a/extensions/source/plugin/base/nfuncs.cxx b/extensions/source/plugin/base/nfuncs.cxx
index 865fed5b88b8..21dbb45324dd 100644
--- a/extensions/source/plugin/base/nfuncs.cxx
+++ b/extensions/source/plugin/base/nfuncs.cxx
@@ -100,13 +100,13 @@ extern "C"
     {
         TRACE( "NPN_GetJavaEnv" );
         // no java in this program
-        return NULL;
+        return nullptr;
     }
 
     jref SAL_CALL NP_LOADDS  NPN_GetJavaPeer( NPP /*instance*/ )
     {
         TRACE( "NPN_GetJavaPeer" );
-        return NULL;
+        return nullptr;
     }
 }
 
@@ -284,7 +284,7 @@ extern "C" {
             // stream will be fed back to plugin,
             // notify immediately after destruction of stream
             pImpl->addPluginEventListener( pListener );
-            pListener = NULL;
+            pListener = nullptr;
         }
         pAsync->aUrl        = OStringToOUString( aLoadURL, pImpl->getTextEncoding() );
         pAsync->aTarget     = OStringToOUString( target, pImpl->getTextEncoding() );
@@ -347,7 +347,7 @@ extern "C" {
             // stream will be fed back to plugin,
             // notify immediately after destruction of stream
             pImpl->addPluginEventListener( pListener );
-            pListener = NULL;
+            pListener = nullptr;
         }
 
         try
@@ -408,8 +408,8 @@ extern "C" {
 
         ::std::list<XPlugin_Impl*>& rList = PluginManager::get().getPlugins();
         ::std::list<XPlugin_Impl*>::iterator iter;
-        XPlugin_Impl* pPlugin = NULL;
-        PluginStream* pStream = NULL;
+        XPlugin_Impl* pPlugin = nullptr;
+        PluginStream* pStream = nullptr;
         for( iter = rList.begin(); iter!= rList.end(); ++iter )
         {
             pStream = (*iter)->getStreamFromNPStream( stream );
diff --git a/extensions/source/plugin/base/plctrl.cxx b/extensions/source/plugin/base/plctrl.cxx
index 0ff4c8c77564..918715599d4f 100644
--- a/extensions/source/plugin/base/plctrl.cxx
+++ b/extensions/source/plugin/base/plctrl.cxx
@@ -39,7 +39,7 @@
 #include <toolkit/helper/vclunohelper.hxx>
 
 PluginControl_Impl::PluginControl_Impl()
-    : _pMultiplexer( NULL )
+    : _pMultiplexer( nullptr )
     , _nX( 0 )
     , _nY( 0 )
     , _nWidth( 100 )
@@ -48,7 +48,7 @@ PluginControl_Impl::PluginControl_Impl()
     , _bVisible(false)
     , _bInDesignMode(false)
     , _bEnable(true)
-    , _pSysChild(NULL)
+    , _pSysChild(nullptr)
 {
 }
 
@@ -146,7 +146,7 @@ void PluginControl_Impl::releasePeer()
     {
         _xParentWindow->removeFocusListener( this );
         _xPeerWindow->dispose();
-        _pSysChild      = NULL;
+        _pSysChild      = nullptr;
         _xPeerWindow.clear();
         _xPeer.clear();
         getMultiplexer()->setPeer( Reference< css::awt::XWindow > () );
diff --git a/extensions/source/plugin/base/service.cxx b/extensions/source/plugin/base/service.cxx
index 40c4824b28f6..f40de1dc4aa5 100644
--- a/extensions/source/plugin/base/service.cxx
+++ b/extensions/source/plugin/base/service.cxx
@@ -60,7 +60,7 @@ extern "C" {
         void* /*pXUnoKey*/
         )
     {
-        void* pRet = 0;
+        void* pRet = nullptr;
 
         OUString aImplName( OUString::createFromAscii( pImplementationName ) );
 
diff --git a/extensions/source/plugin/base/xplugin.cxx b/extensions/source/plugin/base/xplugin.cxx
index 133f072aa978..43d09edbf731 100644
--- a/extensions/source/plugin/base/xplugin.cxx
+++ b/extensions/source/plugin/base/xplugin.cxx
@@ -115,16 +115,16 @@ Any XPlugin_Impl::queryAggregation( const Type& type ) throw( RuntimeException,
 XPlugin_Impl::XPlugin_Impl( const uno::Reference< css::lang::XMultiServiceFactory >  & rSMgr) :
         PluginControl_Impl(),
         m_xSMgr( rSMgr ),
-        m_pPluginComm( NULL ),
+        m_pPluginComm( nullptr ),
         m_pSysPlugData( CreateSysPlugData() ),
         m_aEncoding( osl_getThreadTextEncoding() ),
-        m_pArgv( NULL ),
-        m_pArgn( NULL ),
+        m_pArgv( nullptr ),
+        m_pArgn( nullptr ),
         m_nArgs( 0 ),
         m_aPluginMode( NP_FULL ),
         m_nProvidingState( PROVIDING_NONE ),
         m_nCalledFromPlugin( 0 ),
-        m_pDisposer( NULL ),
+        m_pDisposer( nullptr ),
         m_bIsDisposed( false )
 {
     memset( &m_aInstance, 0, sizeof( m_aInstance ) );
@@ -142,14 +142,14 @@ void XPlugin_Impl::destroyInstance()
 {
     Guard< Mutex > aGuard( m_aMutex );
 
-    NPSavedData* pSavedData = NULL;
+    NPSavedData* pSavedData = nullptr;
 
     destroyStreams();
     if( getPluginComm() )
     {
         getPluginComm()->NPP_Destroy( this, &pSavedData );
         getPluginComm()->decRef();
-        m_pPluginComm = NULL;
+        m_pPluginComm = nullptr;
     }
 
     freeArgs();
@@ -212,7 +212,7 @@ IMPL_LINK_NOARG_TYPED( XPlugin_Impl, secondLevelDispose, void*, void )
     if (m_pDisposer)
     {
         m_pDisposer->release();
-        m_pDisposer = NULL;
+        m_pDisposer = nullptr;
     }
 
     uno::Reference< XPlugin >  xProtection( this );
@@ -222,7 +222,7 @@ IMPL_LINK_NOARG_TYPED( XPlugin_Impl, secondLevelDispose, void*, void )
         Guard< Mutex > aPluginGuard( ::PluginManager::get().getPluginMutex() );
         rList.remove( this );
     }
-    m_aNPWindow.window = NULL;
+    m_aNPWindow.window = nullptr;
 #ifndef UNX
     // acrobat does an unconditional XtParent on the windows widget
     getPluginComm()->NPP_SetWindow( this );
@@ -533,7 +533,7 @@ void XPlugin_Impl::loadPlugin()
                                                    pEnvData->mpNSView );
 #elif defined UNX
             // need a new PluginComm
-            PluginComm* pComm = NULL;
+            PluginComm* pComm = nullptr;
             int sv[2];
             if( !socketpair( AF_UNIX, SOCK_STREAM, 0, sv ) )
                 pComm = new UnxPluginComm( m_aDescription.Mimetype,
@@ -565,9 +565,9 @@ void XPlugin_Impl::loadPlugin()
                  &getNPPInstance(),
                  m_aPluginMode == PluginMode::FULL ? NP_FULL : NP_EMBED,
                  ::sal::static_int_cast< int16_t, int >( m_nArgs ),
-                 const_cast<char**>(m_nArgs ? m_pArgn : NULL),
-                 const_cast<char**>(m_nArgs ? m_pArgv : NULL),
-                 NULL );
+                 const_cast<char**>(m_nArgs ? m_pArgn : nullptr),
+                 const_cast<char**>(m_nArgs ? m_pArgv : nullptr),
+                 nullptr );
 #ifdef MACOSX
     // m_aNPWindow is set up in the MacPluginComm from the view
     SetSysPlugDataParentView(*pEnvData);
@@ -579,9 +579,9 @@ void XPlugin_Impl::loadPlugin()
     }
     else
     {
-        m_aNPWindow.window  = NULL;
+        m_aNPWindow.window  = nullptr;
     }
-    m_aNPWindow.ws_info     = NULL;
+    m_aNPWindow.ws_info     = nullptr;
 #else
     m_aNPWindow.window = (void*)pEnvData->hWnd;
 #endif
@@ -645,7 +645,7 @@ PluginStream* XPlugin_Impl::getStreamFromNPStream( NPStream* stream )
         if( &(*iter2)->getStream() == stream )
             return *iter2;
 
-    return NULL;
+    return nullptr;
 }
 
 sal_Bool XPlugin_Impl::provideNewStream(const OUString& mimetype,
@@ -966,7 +966,7 @@ PluginInputStream::PluginInputStream( XPlugin_Impl* pPlugin,
                                       sal_uInt32 len,
                                       sal_uInt32 lastmod ) :
         PluginStream( pPlugin, url, len, lastmod ),
-        m_pContent( NULL ),
+        m_pContent( nullptr ),
         m_nMode( NP_NORMAL ),
         m_nWritePos( 0 )
 {
@@ -975,7 +975,7 @@ PluginInputStream::PluginInputStream( XPlugin_Impl* pPlugin,
 
     m_pPlugin->getInputStreams().push_back( this );
     OUString aTmpFile;
-    osl::FileBase::createTempFile( 0, 0, &aTmpFile );
+    osl::FileBase::createTempFile( nullptr, nullptr, &aTmpFile );
 
     // set correct extension, some plugins need that
     OUString aName( m_aNPStream.url, strlen( m_aNPStream.url ), m_pPlugin->getTextEncoding() );
@@ -993,7 +993,7 @@ PluginInputStream::PluginInputStream( XPlugin_Impl* pPlugin,
     if( ! m_aFileStream.IsOpen() )
     {
         // might be that the extension scrambled the whole filename
-        osl::FileBase::createTempFile( 0, 0, &aTmpFile );
+        osl::FileBase::createTempFile( nullptr, nullptr, &aTmpFile );
         m_aFileStream.Open( aTmpFile, StreamMode::READ | StreamMode::WRITE );
     }
 }
@@ -1083,7 +1083,7 @@ void PluginInputStream::setMode( sal_Int32 nMode )
     if (m_nMode == -1)
     {
         m_pPlugin->getInputStreams().remove( this );
-        m_pPlugin = NULL;
+        m_pPlugin = nullptr;
         m_wPlugin.clear();
     }
 }
diff --git a/extensions/source/plugin/inc/plugin/impl.hxx b/extensions/source/plugin/inc/plugin/impl.hxx
index 6f919204a374..85d74184a05b 100644
--- a/extensions/source/plugin/inc/plugin/impl.hxx
+++ b/extensions/source/plugin/inc/plugin/impl.hxx
@@ -361,7 +361,7 @@ public:
     PluginInputStream( XPlugin_Impl* pPlugin,
                    const char* url, sal_uInt32 len, sal_uInt32 lastmod );
 
-    PluginInputStream() : PluginStream( NULL, NULL, 0, 0 ) {}
+    PluginInputStream() : PluginStream( nullptr, nullptr, 0, 0 ) {}
 
     virtual ~PluginInputStream();
 
diff --git a/extensions/source/plugin/inc/plugin/unx/mediator.hxx b/extensions/source/plugin/inc/plugin/unx/mediator.hxx
index b44a918bc1ba..8c8dbcf94602 100644
--- a/extensions/source/plugin/inc/plugin/unx/mediator.hxx
+++ b/extensions/source/plugin/inc/plugin/unx/mediator.hxx
@@ -46,9 +46,9 @@ struct MediatorMessage
     char*   m_pRun;
 
     MediatorMessage() : m_nID( 0 ), m_nBytes( 0 ),
-        m_pBytes( NULL ), m_pRun( NULL ) {}
+        m_pBytes( nullptr ), m_pRun( nullptr ) {}
     MediatorMessage( sal_uLong nID, sal_uLong nBytes, char* pBytes ) :
-            m_nID( nID ),m_nBytes( nBytes ), m_pRun( NULL )
+            m_nID( nID ),m_nBytes( nBytes ), m_pRun( nullptr )
         {
             m_pBytes = new char[ m_nBytes ];
             memcpy( m_pBytes, pBytes, (size_t)m_nBytes );
diff --git a/extensions/source/plugin/unx/mediator.cxx b/extensions/source/plugin/unx/mediator.cxx
index 4aecda071328..390c960a1d03 100644
--- a/extensions/source/plugin/unx/mediator.cxx
+++ b/extensions/source/plugin/unx/mediator.cxx
@@ -38,7 +38,7 @@
 
 Mediator::Mediator( int nSocket ) :
         m_nSocket( nSocket ),
-        m_pListener( NULL ),
+        m_pListener( nullptr ),
         m_nCurrentID( 1 ),
         m_bValid( true )
 {
@@ -52,9 +52,9 @@ Mediator::~Mediator()
     {
         {
             ::osl::MutexGuard aGuard( m_pListener->m_aMutex );
-            m_pListener->m_pMediator = NULL;
+            m_pListener->m_pMediator = nullptr;
         }
-        m_pListener = NULL;
+        m_pListener = nullptr;
         if( m_bValid )
         {
             sal_uLong aHeader[3];
@@ -151,7 +151,7 @@ MediatorMessage* Mediator::WaitForAnswer( sal_uLong nMessageID )
         }
         WaitForMessage( 10 );
     }
-    return NULL;
+    return nullptr;
 }
 
 MediatorMessage* Mediator::GetNextMessage( bool bWait )
@@ -172,11 +172,11 @@ MediatorMessage* Mediator::GetNextMessage( bool bWait )
                 }
             }
             if( ! bWait )
-                return NULL;
+                return nullptr;
         }
         WaitForMessage();
     }
-    return NULL;
+    return nullptr;
 }
 
 MediatorMessage* Mediator::TransactMessage( sal_uLong nBytes, char* pBytes )
@@ -248,7 +248,7 @@ void MediatorListener::onTerminated()
     if( m_pMediator )
     {
         m_pMediator->m_aConnectionLostHdl.Call( m_pMediator );
-        m_pMediator->m_pListener = NULL;
+        m_pMediator->m_pListener = nullptr;
     }
     delete this;
 }
@@ -278,7 +278,7 @@ void* MediatorMessage::GetBytes( sal_uLong& rBytes )
     sal_uLong nBytes = ExtractULONG();
 
     if( nBytes == 0 )
-        return NULL;
+        return nullptr;
 
     SAL_WARN_IF(
         (sal_uLong)(m_pRun - m_pBytes) >= m_nBytes, "extensions.plugin",
@@ -301,7 +301,7 @@ char* MediatorMessage::GetString()
     sal_uLong nBytes = ExtractULONG();
 
     if( nBytes == 0 )
-        return NULL;
+        return nullptr;
 
     SAL_WARN_IF(
         (sal_uLong)(m_pRun - m_pBytes) >= m_nBytes, "extensions.plugin",
diff --git a/extensions/source/plugin/unx/npnapi.cxx b/extensions/source/plugin/unx/npnapi.cxx
index 5330c823bb04..3a7eca7b04a5 100644
--- a/extensions/source/plugin/unx/npnapi.cxx
+++ b/extensions/source/plugin/unx/npnapi.cxx
@@ -200,7 +200,7 @@ static NPError l_NPN_NewStream( NPP instance, NPMIMEType type, const char* targe
         pStream->url = pMes->GetString();
         pStream->end = pMes->GetUINT32();
         pStream->lastmodified = pMes->GetUINT32();
-        pStream->ndata = pStream->pdata = pStream->notifyData = NULL;
+        pStream->ndata = pStream->pdata = pStream->notifyData = nullptr;
 
         pConnector->getStreamList().push_back( pStream );
         *stream = pStream;
@@ -314,7 +314,7 @@ static void l_NPN_Status( NPP instance, const char* message )
 
 static const char* l_NPN_UserAgent( NPP instance )
 {
-    static char* pAgent = NULL;
+    static char* pAgent = nullptr;
 
     sal_uInt32 nInstance = pConnector->GetNPPID( instance );
     if( nInstance == PluginConnector::UnknownNPPID )
@@ -470,8 +470,8 @@ static NPNetscapeFuncs aNetscapeFuncs =
     l_NPN_GetJavaEnv,
     l_NPN_GetJavaPeer,
 #   else
-    NULL,
-    NULL,
+    nullptr,
+    nullptr,
 #   endif
     l_NPN_GetURLNotify,
     l_NPN_PostURLNotify,
@@ -486,27 +486,27 @@ static NPPluginFuncs aPluginFuncs =
 {
     sizeof(aPluginFuncs),
     (NP_VERSION_MAJOR << 8) | NP_VERSION_MINOR,
-    NULL,
-    NULL,
-    NULL,
-    NULL,
-    NULL,
-    NULL,
-    NULL,
-    NULL,
-    NULL,
-    NULL,
-    NULL,
-    NULL,
-    NULL,
-    NULL
+    nullptr,
+    nullptr,
+    nullptr,
+    nullptr,
+    nullptr,
+    nullptr,
+    nullptr,
+    nullptr,
+    nullptr,
+    nullptr,
+    nullptr,
+    nullptr,
+    nullptr,
+    nullptr
 };
 
 
-oslModule pPluginLib = NULL;
-char*(*pNPP_GetMIMEDescription)()                               = NULL;
-NPError (*pNP_Initialize)(NPNetscapeFuncs*,NPPluginFuncs*)      = NULL;
-NPError (*pNP_Shutdown)()                                       = NULL;
+oslModule pPluginLib = nullptr;
+char*(*pNPP_GetMIMEDescription)()                               = nullptr;
+NPError (*pNP_Initialize)(NPNetscapeFuncs*,NPPluginFuncs*)      = nullptr;
+NPError (*pNP_Shutdown)()                                       = nullptr;
 
 std::vector< PluginConnector* > PluginConnector::allConnectors;
 
@@ -560,7 +560,7 @@ IMPL_LINK_NOARG_TYPED( PluginConnector, WorkOnNewMessageHdl, void*, void )
                 if( pInst->pShell )
                     XtDestroyWidget( static_cast<Widget>(pInst->pShell) );
 
-                pInst->pWidget = pInst->pShell = NULL;
+                pInst->pWidget = pInst->pShell = nullptr;
 
                 // the other side will call eNPP_DestroyPhase2 after this
                 NPError aReason = NPERR_NO_ERROR;
@@ -573,7 +573,7 @@ IMPL_LINK_NOARG_TYPED( PluginConnector, WorkOnNewMessageHdl, void*, void )
                 sal_uInt32 nInstance    = pMessage->GetUINT32();
                 ConnectorInstance* pInst= m_aInstances[ nInstance ];
                 NPP instance        = pInst->instance;
-                NPSavedData* pSave = NULL;
+                NPSavedData* pSave = nullptr;
 
                 NPError aRet = aPluginFuncs.destroy( instance, &pSave );
                 if( pSave )
@@ -614,7 +614,7 @@ IMPL_LINK_NOARG_TYPED( PluginConnector, WorkOnNewMessageHdl, void*, void )
                 pStream->url            = pMessage->GetString();
                 pStream->end            = pMessage->GetUINT32();
                 pStream->lastmodified   = pMessage->GetUINT32();
-                pStream->pdata = pStream->ndata = pStream->notifyData = NULL;
+                pStream->pdata = pStream->ndata = pStream->notifyData = nullptr;
                 NPBool* pSeekable       = static_cast<NPBool*>(pMessage->GetBytes());
                 m_aNPWrapStreams.push_back( pStream );
                 uint16_t nStype = NP_ASFILE;
@@ -645,7 +645,7 @@ IMPL_LINK_NOARG_TYPED( PluginConnector, WorkOnNewMessageHdl, void*, void )
                 uint16_t* pMode   = static_cast<uint16_t*>(pMessage->GetBytes());
                 int16_t*  pArgc   = static_cast<int16_t*>(pMessage->GetBytes());
                 NPP instance    = new NPP_t;
-                instance->pdata = instance->ndata = NULL;
+                instance->pdata = instance->ndata = nullptr;
                 sal_uLong nArgnBytes, nArgvBytes;
                 char* pArgn = static_cast<char*>(pMessage->GetBytes( nArgnBytes ));
                 char* pArgv = static_cast<char*>(pMessage->GetBytes( nArgvBytes ));
@@ -660,10 +660,10 @@ IMPL_LINK_NOARG_TYPED( PluginConnector, WorkOnNewMessageHdl, void*, void )
                 m_aInstances.push_back( pInst );
                 NPError aRet;
                 aRet = aPluginFuncs.newp( pInst->pMimeType, instance, *pMode, *pArgc,
-                                          pInst->nArg ? pInst->argn : NULL,
-                                          pInst->nArg ? pInst->argv : NULL,
+                                          pInst->nArg ? pInst->argn : nullptr,
+                                          pInst->nArg ? pInst->argv : nullptr,
                                           ( nSaveBytes == 4 && *reinterpret_cast<sal_uInt32*>(pSavedData) == 0 ) ?
-                                          &(pInst->aData) : NULL );
+                                          &(pInst->aData) : nullptr );
                 SAL_INFO(
                     "extensions.plugin",
                     "pluginapp: NPP_New( " << pInst->pMimeType << ", "
diff --git a/extensions/source/plugin/unx/nppapi.cxx b/extensions/source/plugin/unx/nppapi.cxx
index 3d166043a752..eb073e383f51 100644
--- a/extensions/source/plugin/unx/nppapi.cxx
+++ b/extensions/source/plugin/unx/nppapi.cxx
@@ -171,7 +171,7 @@ IMPL_LINK_NOARG_TYPED( PluginConnector, WorkOnNewMessageHdl, void*, void )
                 NPMIMEType pType    = pMessage->GetString();
                 char* pTarget       = pMessage->GetString();
 
-                NPStream* pStream = NULL;
+                NPStream* pStream = nullptr;
 
                 NPError aRet = NPN_NewStream( instance, pType, pTarget, &pStream );
 
@@ -253,7 +253,7 @@ IMPL_LINK_NOARG_TYPED( PluginConnector, WorkOnNewMessageHdl, void*, void )
                 {
                     pRun->offset = pArray[ 2*n ];
                     pRun->length = pArray[ 2*n+1 ];
-                    pRun->next = n < nRanges-1 ? new NPByteRange : NULL;
+                    pRun->next = n < nRanges-1 ? new NPByteRange : nullptr;
                     pRun = pRun->next;
                 }
                 NPError aRet = NPN_RequestRead( pStream, pFirst );
@@ -358,7 +358,7 @@ NPError UnxPluginComm::NPP_Destroy( NPP instance, NPSavedData** save )
     sal_uLong nSaveBytes;
     void* pSaveData = pMes->GetBytes( nSaveBytes );
     if( nSaveBytes == 4 && *static_cast<sal_uInt32*>(pSaveData) == 0 )
-        *save = NULL;
+        *save = nullptr;
     else
     {
         *save = new NPSavedData;
@@ -411,8 +411,8 @@ NPError UnxPluginComm::NPP_New( NPMIMEType pluginType, NPP instance, uint16_t mo
 {
     m_aInstances.push_back(
         new ConnectorInstance( instance, pluginType, 0,
-                               NULL, 0, NULL, 0,
-                               saved ? static_cast<char*>(saved->buf) : NULL,
+                               nullptr, 0, nullptr, 0,
+                               saved ? static_cast<char*>(saved->buf) : nullptr,
                                saved ? saved->len : 0 ) );
 
     char *pArgnBuf, *pArgvBuf;
diff --git a/extensions/source/plugin/unx/npwrap.cxx b/extensions/source/plugin/unx/npwrap.cxx
index 12da5ad6c313..c0a0649f5665 100644
--- a/extensions/source/plugin/unx/npwrap.cxx
+++ b/extensions/source/plugin/unx/npwrap.cxx
@@ -48,18 +48,18 @@
 
 #include <npwrap.hxx>
 
-PluginConnector* pConnector = NULL;
+PluginConnector* pConnector = nullptr;
 
 int         nAppArguments = 0;
-char**      pAppArguments = NULL;
-Display*    pAppDisplay = NULL;
-Display*    pXtAppDisplay = NULL;
+char**      pAppArguments = nullptr;
+Display*    pAppDisplay = nullptr;
+Display*    pXtAppDisplay = nullptr;
 
 extern oslModule pPluginLib;
 extern NPError (*pNP_Shutdown)();
 
 XtAppContext app_context;
-Widget topLevel = NULL, topBox = NULL;
+Widget topLevel = nullptr, topBox = nullptr;
 int wakeup_fd[2] = { 0, 0 };
 static bool bPluginAppQuit = false;
 
@@ -187,7 +187,7 @@ static oslModule LoadModule( const char* pPath )
 static void CheckPlugin( const char* pPath )
 {
     oslModule pLib = LoadModule( pPath );
-    if (pLib != 0) {
+    if (pLib != nullptr) {
         char*(*pNP_GetMIMEDescription)() = reinterpret_cast<char*(*)()>(
                                                osl_getAsciiFunctionSymbol( pLib, "NP_GetMIMEDescription" ));
         if( pNP_GetMIMEDescription )
@@ -219,7 +219,7 @@ extern "C" {
         if( pConnector ) {
             // ensure that a read on the other side will wakeup
             delete pConnector;
-            pConnector = NULL;
+            pConnector = nullptr;
         }
 
         _exit(nSig);
@@ -255,9 +255,9 @@ extern "C" {
         prepareXtEvent,
         checkXtEvent,
         dispatchXtEvent,
-        NULL,
+        nullptr,
         noClosure,
-        NULL
+        nullptr
     };
 
     static gboolean pollXtTimerCallback(gpointer)
@@ -298,7 +298,7 @@ extern "C" {
             bPluginAppQuit = true;
 
             delete pConnector;
-            pConnector = NULL;
+            pConnector = nullptr;
         }
 
         return sal_True;
@@ -308,9 +308,9 @@ extern "C" {
         prepareWakeupEvent,
         checkWakeupEvent,
         dispatchWakeupEvent,
-        NULL,
+        nullptr,
         noClosure,
-        NULL
+        nullptr
     };
 
 #endif // GTK
@@ -325,11 +325,11 @@ int main( int argc, char **argv)
         aSigAction.sa_handler = signal_handler;
         sigemptyset( &aSigAction.sa_mask );
         aSigAction.sa_flags = SA_NOCLDSTOP;
-        sigaction( SIGSEGV, &aSigAction, NULL );
-        sigaction( SIGBUS, &aSigAction, NULL );
-        sigaction( SIGABRT, &aSigAction, NULL );
-        sigaction( SIGTERM, &aSigAction, NULL );
-        sigaction( SIGILL, &aSigAction, NULL );
+        sigaction( SIGSEGV, &aSigAction, nullptr );
+        sigaction( SIGBUS, &aSigAction, nullptr );
+        sigaction( SIGABRT, &aSigAction, nullptr );
+        sigaction( SIGTERM, &aSigAction, nullptr );
+        sigaction( SIGILL, &aSigAction, nullptr );
 
         int nArg = (argc < 3) ? 1 : 2;
         char* pBaseName = argv[nArg] + strlen(argv[nArg]);
@@ -380,18 +380,18 @@ int main( int argc, char **argv)
         int nSocket = atol( argv[1] );
 
     #if ENABLE_GTK
-        g_thread_init(NULL);
+        g_thread_init(nullptr);
         gtk_init(&argc, &argv);
     #endif
 
         pConnector = new PluginConnector( nSocket );
-        pConnector->SetConnectionLostHdl( Link<Mediator*,void>( NULL, GlobalConnectionLostHdl ) );
+        pConnector->SetConnectionLostHdl( Link<Mediator*,void>( nullptr, GlobalConnectionLostHdl ) );
 
-        XtSetLanguageProc( NULL, NULL, NULL );
+        XtSetLanguageProc( nullptr, nullptr, nullptr );
 
         XtToolkitInitialize();
         app_context = XtCreateApplicationContext();
-        pXtAppDisplay = XtOpenDisplay( app_context, NULL, "SOPlugin", "SOPlugin", NULL, 0, &argc, argv );
+        pXtAppDisplay = XtOpenDisplay( app_context, nullptr, "SOPlugin", "SOPlugin", nullptr, 0, &argc, argv );
 
 
     #if ENABLE_GTK
@@ -406,21 +406,21 @@ int main( int argc, char **argv)
 
         g_source_set_priority( pXTSource, GDK_PRIORITY_EVENTS );
         g_source_set_can_recurse( pXTSource, sal_True );
-        g_source_attach( pXTSource, NULL );
+        g_source_attach( pXTSource, nullptr );
         aXtPollDesc.fd = ConnectionNumber( pXtAppDisplay );
         aXtPollDesc.events = G_IO_IN;
         aXtPollDesc.revents = 0;
         g_source_add_poll( pXTSource, &aXtPollDesc );
 
-        gint xt_polling_timer_id = g_timeout_add( 25, pollXtTimerCallback, NULL);
+        gint xt_polling_timer_id = g_timeout_add( 25, pollXtTimerCallback, nullptr);
         // Initialize wakeup events listener
         GSource *pWakeupSource = g_source_new( &aWakeupEventFuncs, sizeof(GSource) );
-        if ( pWakeupSource == NULL ) {
+        if ( pWakeupSource == nullptr ) {
             SAL_WARN("extensions.plugin", "could not get wakeup source");
             return 1;
         }
         g_source_set_priority( pWakeupSource, GDK_PRIORITY_EVENTS);
-        g_source_attach( pWakeupSource, NULL );
+        g_source_attach( pWakeupSource, nullptr );
         aWakeupPollDesc.fd = wakeup_fd[0];
         aWakeupPollDesc.events = G_IO_IN;
         aWakeupPollDesc.revents = 0;
@@ -463,7 +463,7 @@ int main( int argc, char **argv)
         // of XtAppMainLoop
         do {
     #if ENABLE_GTK
-            g_main_context_iteration( NULL, sal_True );
+            g_main_context_iteration( nullptr, sal_True );
     #else
             XtAppProcessEvent( app_context, XtIMAll );
     #endif
diff --git a/extensions/source/plugin/unx/plugcon.cxx b/extensions/source/plugin/unx/plugcon.cxx
index fe0bd5d12511..65c9e610d1bf 100644
--- a/extensions/source/plugin/unx/plugcon.cxx
+++ b/extensions/source/plugin/unx/plugcon.cxx
@@ -164,7 +164,7 @@ void PluginConnector::Respond( sal_uLong nID,
 MediatorMessage* PluginConnector::WaitForAnswer( sal_uLong nMessageID )
 {
     if( ! m_bValid )
-        return NULL;
+        return nullptr;
 
     nMessageID &= 0x00ffffff;
     while( m_pListener )
@@ -187,7 +187,7 @@ MediatorMessage* PluginConnector::WaitForAnswer( sal_uLong nMessageID )
             CallWorkHandler();
         WaitForMessage( 2000 );
     }
-    return NULL;
+    return nullptr;
 }
 
 ConnectorInstance::ConnectorInstance( NPP inst, char* type,
@@ -195,11 +195,11 @@ ConnectorInstance::ConnectorInstance( NPP inst, char* type,
                                       char* pargvbuf, sal_uLong nargvbytes,
                                       char* savedata, sal_uLong savebytes ) :
         instance( inst ),
-        pShell( NULL ),
-        pWidget( NULL ),
-        pForm( NULL ),
-        pGtkWindow( NULL ),
-        pGtkWidget( NULL ),
+        pShell( nullptr ),
+        pWidget( nullptr ),
+        pForm( nullptr ),
+        pGtkWindow( nullptr ),
+        pGtkWidget( nullptr ),
         bShouldUseXEmbed( false ),
         nArg( args ),
         pArgnBuf( pargnbuf ),
@@ -276,7 +276,7 @@ const char* GetCommandName( CommandAtoms eCommand )
         case eMaxCommand:               return "eMaxCommand";
         default:                        return "unknown command";
     }
-    return NULL;
+    return nullptr;
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/extensions/source/plugin/unx/sysplug.cxx b/extensions/source/plugin/unx/sysplug.cxx
index acb08a37138e..b7a1d8162f6a 100644
--- a/extensions/source/plugin/unx/sysplug.cxx
+++ b/extensions/source/plugin/unx/sysplug.cxx
@@ -79,7 +79,7 @@ UnxPluginComm::UnxPluginComm(
     pArgs[1] = pDesc;
     pArgs[2] = aLib.getStr();
     pArgs[3] = pWindow;
-    pArgs[4] = NULL;
+    pArgs[4] = nullptr;
 
     SAL_INFO(
         "extensions.plugin",
@@ -137,7 +137,7 @@ UnxPluginComm::~UnxPluginComm()
 }
 
 bool UnxPluginComm::getPluginappPath(OString * path) {
-    OSL_ASSERT(path != NULL);
+    OSL_ASSERT(path != nullptr);
     OUString p("$BRAND_BASE_DIR/" LIBO_LIBEXEC_FOLDER "/pluginapp.bin");
     rtl::Bootstrap::expandMacros(p);
     return
diff --git a/extensions/source/plugin/unx/unxmgr.cxx b/extensions/source/plugin/unx/unxmgr.cxx
index 0433aea921fe..811376841e1f 100644
--- a/extensions/source/plugin/unx/unxmgr.cxx
+++ b/extensions/source/plugin/unx/unxmgr.cxx
@@ -210,7 +210,7 @@ static void CheckPluginRegistryFiles( const OString& rPath, list< PluginDescript
 
     // check subdirectories
     DIR* pDIR = opendir( rPath.getStr() );
-    struct dirent* pDirEnt = NULL;
+    struct dirent* pDirEnt = nullptr;
     struct stat aStat;
     maxDirent u;
     while( pDIR && ! readdir_r( pDIR, &u.asDirent, &pDirEnt ) && pDirEnt )
@@ -274,7 +274,7 @@ Sequence<PluginDescription> XPluginManager_Impl::impl_getPluginDescriptions() th
             if (!aPath.isEmpty())
             {
                 DIR* pDIR = opendir(aPath.getStr());
-                struct dirent* pDirEnt = NULL;
+                struct dirent* pDirEnt = nullptr;
                 while( pDIR && ! readdir_r( pDIR, &u.asDirent, &pDirEnt ) && pDirEnt )
                 {
                     char* pBaseName = u.asDirent.d_name;