From 4ccf391d1640a72dfb24d88c83127977b745a703 Mon Sep 17 00:00:00 2001
From: Sebastião Guerra <sebastiao.luiz.guerra@gmail.com>
Date: Sun, 8 Nov 2026 08:05:41 -0300
Subject: Replace NULL pointer constants in resource backends
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Sebastião Guerra <sebastiao.luiz.guerra@gmail.com>
---
 tderesources/caldav/config.cpp       |  8 ++---
 tderesources/caldav/preferences.cpp  | 16 +++++-----
 tderesources/caldav/preferences.h    |  2 +-
 tderesources/caldav/resource.cpp     | 38 +++++++++++------------
 tderesources/carddav/config.cpp      |  8 ++---
 tderesources/carddav/preferences.cpp | 16 +++++-----
 tderesources/carddav/preferences.h   |  2 +-
 tderesources/carddav/resource.cpp    | 58 ++++++++++++++++++------------------
 tderesources/lib/webdavhandler.cpp   |  2 +-
 9 files changed, 75 insertions(+), 75 deletions(-)

diff --git a/tderesources/caldav/config.cpp b/tderesources/caldav/config.cpp
index 1de9c988c..4307e8129 100644
--- a/tderesources/caldav/config.cpp
+++ b/tderesources/caldav/config.cpp
@@ -54,7 +54,7 @@ ResourceCalDav* ResourceCalDavConfig::getCalDavResource(KRES::Resource* resource
 }
 
 CalDavPrefs* ResourceCalDavConfig::getPrefs(ResourceCalDav* res) {
-    CalDavPrefs* p = NULL;
+    CalDavPrefs* p = nullptr;
 
     if (res) {
         p = res->prefs();
@@ -83,7 +83,7 @@ ResourceCalDavConfig::ResourceCalDavConfig( TQWidget *parent )
 void ResourceCalDavConfig::loadSettings( KRES::Resource *resource ) {
     ResourceCalDav* res = getCalDavResource(resource);
     CalDavPrefs* p = getPrefs(res);
-    if (NULL != p) {
+    if (p) {
         mUrl->setText(p->url());
         mUsername->setText(p->username());
         mRememberPassword->setChecked(p->rememberPassword());
@@ -100,12 +100,12 @@ void ResourceCalDavConfig::loadSettings( KRES::Resource *resource ) {
 
 void ResourceCalDavConfig::saveSettings( KRES::Resource *resource ) {
     ResourceCalDav* res = getCalDavResource(resource);
-    if (NULL != res) {
+    if (res) {
         mReloadConfig->saveSettings(res);
         mSaveConfig->saveSettings(res);
 
         CalDavPrefs* p = getPrefs(res);
-        if (NULL != p) {
+        if (p) {
             p->setUrl(mUrl->text());
             p->setUsername(mUsername->text());
             p->setRememberPassword(mRememberPassword->isChecked());
diff --git a/tderesources/caldav/preferences.cpp b/tderesources/caldav/preferences.cpp
index e1894162a..06752bcfa 100644
--- a/tderesources/caldav/preferences.cpp
+++ b/tderesources/caldav/preferences.cpp
@@ -43,7 +43,7 @@ const TQString CalDavPrefs::WALLET_PWD_SUFFIX = ":caldav_password";
 bool CalDavPrefs::setWalletFolder(const TQString& folder) {
     bool ret = true;
 
-    if (!mNoWallet && NULL != mWallet) {
+    if (!mNoWallet && mWallet) {
         if (!mWallet->hasFolder(folder)) {
             if (!mWallet->createFolder(folder)) {
                 ret = false;
@@ -63,16 +63,16 @@ bool CalDavPrefs::setWalletFolder(const TQString& folder) {
 }
 
 Wallet* CalDavPrefs::getWallet() {
-    Wallet* ret = NULL;
+    Wallet* ret = nullptr;
 
     if (!mNoWallet) {
         // the wallet is not marked as inaccessible
 
-        if (NULL == mWallet) {
+        if (!mWallet) {
             kdDebug() << "creating wallet for " << mPrefix << endl;
 
             mWallet = Wallet::openWallet(Wallet::NetworkWallet(), 0);
-            if (NULL == mWallet) {
+            if (!mWallet) {
                 mNoWallet = true; // can't open the wallet, mark it inaccessible
                 kdWarning() << "can't create a wallet for CalDAV passwords" << endl;
             } else {
@@ -94,7 +94,7 @@ Wallet* CalDavPrefs::getWallet() {
 
 void CalDavPrefs::removeWallet(bool noWallet) {
     delete mWallet;
-    mWallet = NULL;
+    mWallet = nullptr;
     mNoWallet = noWallet;
 }
 
@@ -112,7 +112,7 @@ bool CalDavPrefs::writePasswordToWallet(const TQString& password) {
     Wallet* w = getWallet();
 
     bool ret = false;
-    if (NULL != w) {
+    if (w) {
         int rc = w->writePassword(mPrefix + WALLET_PWD_SUFFIX, password);
         if (0 != rc) {
             kdWarning() << "CalDAV: can't write password to the wallet" << endl;
@@ -128,7 +128,7 @@ bool CalDavPrefs::readPasswordFromWallet(TQString& password) {
     Wallet* w = getWallet();
 
     bool ret = false;
-    if (NULL != w) {
+    if (w) {
         TQString p;
         int rc = w->readPassword(mPrefix + WALLET_PWD_SUFFIX, p);
         if (0 == rc) {
@@ -149,7 +149,7 @@ bool CalDavPrefs::removePasswordFromWallet() {
     Wallet* w = getWallet();
 
     bool ret = false;
-    if (NULL != w) {
+    if (w) {
         int rc = w->removeEntry(mPrefix + WALLET_PWD_SUFFIX);
         if (0 == rc) {
             ret = true;
diff --git a/tderesources/caldav/preferences.h b/tderesources/caldav/preferences.h
index 888c640bd..464437b31 100644
--- a/tderesources/caldav/preferences.h
+++ b/tderesources/caldav/preferences.h
@@ -45,7 +45,7 @@ public:
      * @param prefix Unique prefix of the resource instance (use identifier() method).
      */
     CalDavPrefs(const TQString& prefix)
-        : mWallet(NULL)
+        : mWallet(nullptr)
         , mNoWallet(false)
         , mPrefix(prefix)
         , mPassword(NO_PASSWORD)
diff --git a/tderesources/caldav/resource.cpp b/tderesources/caldav/resource.cpp
index 41e76f797..f1d7c1291 100644
--- a/tderesources/caldav/resource.cpp
+++ b/tderesources/caldav/resource.cpp
@@ -73,13 +73,13 @@ ResourceCalDav::ResourceCalDav( const TDEConfig *config ) :
     , readLockout(false)
     , mAllWritesComplete(false)
     , mLock(true)
-    , mPrefs(NULL)
-    , mLoader(NULL)
-    , mWriter(NULL)
-    , mProgress(NULL)
+    , mPrefs(nullptr)
+    , mLoader(nullptr)
+    , mWriter(nullptr)
+    , mProgress(nullptr)
     , mLoadingQueueReady(true)
     , mWritingQueueReady(true)
-    , mWriteRetryTimer(NULL)
+    , mWriteRetryTimer(nullptr)
 {
     log("ResourceCalDav(config)");
     init();
@@ -92,7 +92,7 @@ ResourceCalDav::ResourceCalDav( const TDEConfig *config ) :
 ResourceCalDav::~ResourceCalDav() {
     log("jobs termination");
 
-    if (mWriteRetryTimer != NULL) {
+    if (mWriteRetryTimer) {
         mWriteRetryTimer->stop();	// Unfortunately we cannot do anything at this point; if this timer is still running something is seriously wrong
     }
 
@@ -134,7 +134,7 @@ ResourceCalDav::~ResourceCalDav() {
 
 bool ResourceCalDav::isSaving() {
     doSave();
-    return (((mWriteRetryTimer != NULL) ? 1 : 0) || (mWriter->running() == true) || (mWritingQueue.isEmpty() == false) || !mWritingQueueReady || readLockout);
+    return (mWriteRetryTimer || mWriter->running() || !mWritingQueue.isEmpty() || !mWritingQueueReady || readLockout);
 }
 
 /*=========================================================================
@@ -195,11 +195,11 @@ bool ResourceCalDav::doSave() {
         // FIXME: Calling clearChanges() here is not the ideal way since the
         // upload might fail, but there is no other place to call it...
         clearChanges();
-        if (mWriteRetryTimer != NULL) {
+        if (mWriteRetryTimer) {
             if (mWriteRetryTimer->isActive() == false) {
                 disconnect( mWriteRetryTimer, TQ_SIGNAL(timeout()), this, TQ_SLOT(doSave()) );
                 delete mWriteRetryTimer;
-                mWriteRetryTimer = NULL;
+                mWriteRetryTimer = nullptr;
             }
         }
         return true;
@@ -292,14 +292,14 @@ void ResourceCalDav::updateProgressBar(int direction) {
     }
 
     if (current_queued_events == 0) {
-        if ( mProgress != NULL) {
+        if (mProgress) {
             mProgress->setComplete();
-            mProgress = NULL;
+            mProgress = nullptr;
             original_queued_events = 0;
         }
     }
     else {
-        if (mProgress == NULL) {
+        if (!mProgress) {
             if (direction == 0) mProgress = KPIM::ProgressManager::createProgressItem(KPIM::ProgressManager::getUniqueID(), i18n("Downloading Calendar") );
             if (direction == 1) mProgress = KPIM::ProgressManager::createProgressItem(KPIM::ProgressManager::getUniqueID(), i18n("Uploading Calendar") );
         }
@@ -375,9 +375,9 @@ void ResourceCalDav::loadFinished() {
 
     if (loader->error()) {
         if (loader->errorNumber() == -401) {
-            if (NULL != mPrefs) {
+            if (mPrefs) {
                 TQString newpass;
-                if (KPasswordDialog::getPassword (newpass, TQString("<b>") + i18n("Remote authorization required") + TQString("</b><p>") + i18n("Please input the password for") + TQString(" ") + mPrefs->getusername(), NULL) != 1) {
+                if (KPasswordDialog::getPassword (newpass, TQString("<b>") + i18n("Remote authorization required") + TQString("</b><p>") + i18n("Please input the password for") + TQString(" ") + mPrefs->getusername(), nullptr) != 1) {
                     log("load error: " + loader->errorString() );
                     loadError(TQString("[%1] ").arg(abs(loader->errorNumber())) + loader->errorString());
                 }
@@ -423,7 +423,7 @@ void ResourceCalDav::loadFinished() {
 
     if (loader->tasksError()) {
         if (loader->tasksErrorNumber() == -401) {
-            if (NULL != mPrefs) {
+            if (mPrefs) {
 //                 TQString newpass;
 //                 if (KPasswordDialog::getPassword (newpass, TQString("<b>") + i18n("Remote authorization required") + TQString("</b><p>") + i18n("Please input the password for") + TQString(" ") + mPrefs->getusername(), NULL) != 1) {
 //                     log("load error: " + loader->tasksErrorString() );
@@ -471,7 +471,7 @@ void ResourceCalDav::loadFinished() {
 
     if (loader->journalsError()) {
         if (loader->journalsErrorNumber() == -401) {
-            if (NULL != mPrefs) {
+            if (mPrefs) {
 //                 TQString newpass;
 //                 if (KPasswordDialog::getPassword (newpass, TQString("<b>") + i18n("Remote authorization required") + TQString("</b><p>") + i18n("Please input the password for") + TQString(" ") + mPrefs->getusername(), NULL) != 1) {
 //                     log("load error: " + loader->journalsErrorString() );
@@ -848,7 +848,7 @@ bool ResourceCalDav::startWriting(const TQString& url, const TQString& tasksUrl,
     // modifies the calendar with clearChanges() or similar
     // Before these calls are made any existing read (and maybe write) threads should be finished
     if ((mLoader->running() == true) || (mLoadingQueue.isEmpty() == false) || (mWriter->running() == true) || (mWritingQueue.isEmpty() == false)) {
-        if (mWriteRetryTimer == NULL) {
+        if (!mWriteRetryTimer) {
             mWriteRetryTimer = new TQTimer(this);
             connect( mWriteRetryTimer, TQ_SIGNAL(timeout()), TQ_SLOT(doSave()) );
         }
@@ -968,9 +968,9 @@ void ResourceCalDav::writingFinished() {
 
     if (mWriter->error() && (abs(mWriter->errorNumber()) != 207)) {
         if (mWriter->errorNumber() == -401) {
-            if (NULL != mPrefs) {
+            if (mPrefs) {
                 TQString newpass;
-                if (KPasswordDialog::getPassword (newpass, TQString("<b>") + i18n("Remote authorization required") + TQString("</b><p>") + i18n("Please input the password for") + TQString(" ") + mPrefs->getusername(), NULL) != 1) {
+                if (KPasswordDialog::getPassword (newpass, TQString("<b>") + i18n("Remote authorization required") + TQString("</b><p>") + i18n("Please input the password for") + TQString(" ") + mPrefs->getusername(), nullptr) != 1) {
                     log("write error: " + mWriter->errorString());
                     saveError(TQString("[%1] ").arg(abs(mWriter->errorNumber())) + mWriter->errorString());
                 }
diff --git a/tderesources/carddav/config.cpp b/tderesources/carddav/config.cpp
index 663d19d40..130f12e9d 100644
--- a/tderesources/carddav/config.cpp
+++ b/tderesources/carddav/config.cpp
@@ -53,7 +53,7 @@ ResourceCardDav* ResourceCardDavConfig::getCardDavResource(KRES::Resource* resou
 }
 
 CardDavPrefs* ResourceCardDavConfig::getPrefs(ResourceCardDav* res) {
-    CardDavPrefs* p = NULL;
+    CardDavPrefs* p = nullptr;
 
     if (res) {
         p = res->prefs();
@@ -82,7 +82,7 @@ ResourceCardDavConfig::ResourceCardDavConfig( TQWidget *parent )
 void ResourceCardDavConfig::loadSettings( KRES::Resource *resource ) {
     ResourceCardDav* res = getCardDavResource(resource);
     CardDavPrefs* p = getPrefs(res);
-    if (NULL != p) {
+    if (p) {
         mUrl->setText(p->url());
         mUsername->setText(p->username());
         mRememberPassword->setChecked(p->rememberPassword());
@@ -96,12 +96,12 @@ void ResourceCardDavConfig::loadSettings( KRES::Resource *resource ) {
 
 void ResourceCardDavConfig::saveSettings( KRES::Resource *resource ) {
     ResourceCardDav* res = getCardDavResource(resource);
-    if (NULL != res) {
+    if (res) {
         mReloadConfig->saveSettings(res);
         mSaveConfig->saveSettings(res);
 
         CardDavPrefs* p = getPrefs(res);
-        if (NULL != p) {
+        if (p) {
             p->setUrl(mUrl->text());
             p->setUsername(mUsername->text());
             p->setRememberPassword(mRememberPassword->isChecked());
diff --git a/tderesources/carddav/preferences.cpp b/tderesources/carddav/preferences.cpp
index 2bde1ff44..e03cdcceb 100644
--- a/tderesources/carddav/preferences.cpp
+++ b/tderesources/carddav/preferences.cpp
@@ -42,7 +42,7 @@ const TQString CardDavPrefs::WALLET_PWD_SUFFIX = ":carddav_password";
 bool CardDavPrefs::setWalletFolder(const TQString& folder) {
     bool ret = true;
 
-    if (!mNoWallet && NULL != mWallet) {
+    if (!mNoWallet && mWallet) {
         if (!mWallet->hasFolder(folder)) {
             if (!mWallet->createFolder(folder)) {
                 ret = false;
@@ -62,16 +62,16 @@ bool CardDavPrefs::setWalletFolder(const TQString& folder) {
 }
 
 Wallet* CardDavPrefs::getWallet() {
-    Wallet* ret = NULL;
+    Wallet* ret = nullptr;
 
     if (!mNoWallet) {
         // the wallet is not marked as inaccessible
 
-        if (NULL == mWallet) {
+        if (!mWallet) {
             kdDebug() << "creating wallet for " << mPrefix << endl;
 
             mWallet = Wallet::openWallet(Wallet::NetworkWallet(), 0);
-            if (NULL == mWallet) {
+            if (!mWallet) {
                 mNoWallet = true; // can't open the wallet, mark it inaccessible
                 kdWarning() << "can't create a wallet for CardDAV passwords" << endl;
             } else {
@@ -93,7 +93,7 @@ Wallet* CardDavPrefs::getWallet() {
 
 void CardDavPrefs::removeWallet(bool noWallet) {
     delete mWallet;
-    mWallet = NULL;
+    mWallet = nullptr;
     mNoWallet = noWallet;
 }
 
@@ -111,7 +111,7 @@ bool CardDavPrefs::writePasswordToWallet(const TQString& password) {
     Wallet* w = getWallet();
 
     bool ret = false;
-    if (NULL != w) {
+    if (w) {
         int rc = w->writePassword(mPrefix + WALLET_PWD_SUFFIX, password);
         if (0 != rc) {
             kdWarning() << "CardDAV: can't write password to the wallet" << endl;
@@ -127,7 +127,7 @@ bool CardDavPrefs::readPasswordFromWallet(TQString& password) {
     Wallet* w = getWallet();
 
     bool ret = false;
-    if (NULL != w) {
+    if (w) {
         TQString p;
         int rc = w->readPassword(mPrefix + WALLET_PWD_SUFFIX, p);
         if (0 == rc) {
@@ -148,7 +148,7 @@ bool CardDavPrefs::removePasswordFromWallet() {
     Wallet* w = getWallet();
 
     bool ret = false;
-    if (NULL != w) {
+    if (w) {
         int rc = w->removeEntry(mPrefix + WALLET_PWD_SUFFIX);
         if (0 == rc) {
             ret = true;
diff --git a/tderesources/carddav/preferences.h b/tderesources/carddav/preferences.h
index 1d205d031..d1f467b22 100644
--- a/tderesources/carddav/preferences.h
+++ b/tderesources/carddav/preferences.h
@@ -44,7 +44,7 @@ public:
      * @param prefix Unique prefix of the resource instance (use identifier() method).
      */
     CardDavPrefs(const TQString& prefix)
-        : mWallet(NULL)
+        : mWallet(nullptr)
         , mNoWallet(false)
         , mPrefix(prefix)
         , mPassword(NO_PASSWORD)
diff --git a/tderesources/carddav/resource.cpp b/tderesources/carddav/resource.cpp
index 840d96be8..596120a41 100644
--- a/tderesources/carddav/resource.cpp
+++ b/tderesources/carddav/resource.cpp
@@ -73,13 +73,13 @@ ResourceCardDav::ResourceCardDav( const TDEConfig *config ) :
     , readLockout(false)
     , mAllWritesComplete(false)
     , mLock(true)
-    , mPrefs(NULL)
-    , mLoader(NULL)
-    , mWriter(NULL)
-    , mProgress(NULL)
+    , mPrefs(nullptr)
+    , mLoader(nullptr)
+    , mWriter(nullptr)
+    , mProgress(nullptr)
     , mLoadingQueueReady(true)
     , mWritingQueueReady(true)
-    , mWriteRetryTimer(NULL)
+    , mWriteRetryTimer(nullptr)
 {
     log("ResourceCardDav(config)");
     init();
@@ -92,7 +92,7 @@ ResourceCardDav::ResourceCardDav( const TDEConfig *config ) :
 ResourceCardDav::~ResourceCardDav() {
     log("jobs termination");
 
-    if (mWriteRetryTimer != NULL) {
+    if (mWriteRetryTimer) {
         mWriteRetryTimer->stop();	// Unfortunately we cannot do anything at this point; if this timer is still running something is seriously wrong
     }
 
@@ -131,7 +131,7 @@ ResourceCardDav::~ResourceCardDav() {
 
 bool ResourceCardDav::isSaving() {
     doSave();
-    return (((mWriteRetryTimer != NULL) ? 1 : 0) || (mWriter->running() == true) || (mWritingQueue.isEmpty() == false) || !mWritingQueueReady || readLockout);
+    return (mWriteRetryTimer || mWriter->running() || !mWritingQueue.isEmpty() || !mWritingQueueReady || readLockout);
 }
 
 /*=========================================================================
@@ -155,7 +155,7 @@ bool ResourceCardDav::load() {
     loadCache();
     //enableChangeNotification();
     clearChanges();
-    if (addressBook() != NULL) {
+    if (addressBook()) {
         addressBook()->emitAddressBookChanged();
     }
     emit loadingFinished( this );
@@ -195,11 +195,11 @@ bool ResourceCardDav::doSave() {
         // FIXME: Calling clearChanges() here is not the ideal way since the
         // upload might fail, but there is no other place to call it...
         clearChanges();
-        if (mWriteRetryTimer != NULL) {
+        if (mWriteRetryTimer) {
             if (mWriteRetryTimer->isActive() == false) {
                 disconnect( mWriteRetryTimer, TQ_SIGNAL(timeout()), this, TQ_SLOT(doSave()) );
                 delete mWriteRetryTimer;
-                mWriteRetryTimer = NULL;
+                mWriteRetryTimer = nullptr;
             }
         }
         return true;
@@ -271,7 +271,7 @@ void ResourceCardDav::ensureReadOnlyFlagHonored() {
 
     //enableChangeNotification();
 
-    if (addressBook() != NULL) {
+    if (addressBook()) {
         addressBook()->emitAddressBookChanged();
     }
 }
@@ -295,14 +295,14 @@ void ResourceCardDav::updateProgressBar(int direction) {
     }
 
     if (current_queued_events == 0) {
-        if ( mProgress != NULL) {
+        if (mProgress) {
             mProgress->setComplete();
-            mProgress = NULL;
+            mProgress = nullptr;
             original_queued_events = 0;
         }
     }
     else {
-        if (mProgress == NULL) {
+        if (!mProgress) {
             if (direction == 0) mProgress = KPIM::ProgressManager::createProgressItem(KPIM::ProgressManager::getUniqueID(), i18n("Downloading Contacts") );
             if (direction == 1) mProgress = KPIM::ProgressManager::createProgressItem(KPIM::ProgressManager::getUniqueID(), i18n("Uploading Contacts") );
         }
@@ -371,11 +371,11 @@ void ResourceCardDav::loadFinished() {
 
     if (loader->error()) {
         if (loader->errorNumber() == -401) {
-            if (NULL != mPrefs) {
+            if (mPrefs) {
                 TQString newpass;
-                if (KPasswordDialog::getPassword (newpass, TQString("<b>") + i18n("Remote authorization required") + TQString("</b><p>") + i18n("Please input the password for") + TQString(" ") + mPrefs->getusername(), NULL) != 1) {
+                if (KPasswordDialog::getPassword (newpass, TQString("<b>") + i18n("Remote authorization required") + TQString("</b><p>") + i18n("Please input the password for") + TQString(" ") + mPrefs->getusername(), nullptr) != 1) {
                     log("load error: " + loader->errorString() );
-                    if (addressBook() != NULL) addressBook()->error(TQString("[%1] ").arg(abs(loader->errorNumber())) + loader->errorString());
+                    if (addressBook()) addressBook()->error(TQString("[%1] ").arg(abs(loader->errorNumber())) + loader->errorString());
                 }
                 else {
                     // Set new password and try again
@@ -385,12 +385,12 @@ void ResourceCardDav::loadFinished() {
             }
             else {
                 log("load error: " + loader->errorString() );
-                if (addressBook() != NULL) addressBook()->error(TQString("[%1] ").arg(abs(loader->errorNumber())) + loader->errorString());
+                if (addressBook()) addressBook()->error(TQString("[%1] ").arg(abs(loader->errorNumber())) + loader->errorString());
             }
         }
         else {
             log("load error: " + loader->errorString() );
-            if (addressBook() != NULL) addressBook()->error(TQString("[%1] ").arg(abs(loader->errorNumber())) + loader->errorString());
+            if (addressBook()) addressBook()->error(TQString("[%1] ").arg(abs(loader->errorNumber())) + loader->errorString());
         }
     } else {
         log("successful load");
@@ -406,7 +406,7 @@ void ResourceCardDav::loadFinished() {
                 log("clearing changes");
                 //enableChangeNotification();
                 clearChanges();
-                if (addressBook() != NULL) addressBook()->emitAddressBookChanged();
+                if (addressBook()) addressBook()->emitAddressBookChanged();
                 emit loadingFinished( this );
             }
         }
@@ -443,7 +443,7 @@ bool ResourceCardDav::parseData(const TQString& data) {
     // check if the data is OK
     // May be it's not efficient (parsing is done twice), but it should be safe
     if (!checkData(data)) {
-        if (addressBook() != NULL) addressBook()->error(i18n("Parsing calendar data failed."));
+        if (addressBook()) addressBook()->error(i18n("Parsing calendar data failed."));
         return false;
     }
 
@@ -479,7 +479,7 @@ bool ResourceCardDav::parseData(const TQString& data) {
         sout << data << "\n";
         fout.close();
     } else {
-        if (addressBook() != NULL) addressBook()->error(i18n("can't open file"));
+        if (addressBook()) addressBook()->error(i18n("can't open file"));
     }
 #endif // KCARDDAV_DEBUG
     // end of debug code ----------------------------------------------------
@@ -563,7 +563,7 @@ void ResourceCardDav::writingQueuePop() {
         sout << "================== Deleted:\n" << t->deleted << "\n";
         fout.close();
     } else {
-        if (addressBook() != NULL) addressBook()->error(i18n("can't open file"));
+        if (addressBook()) addressBook()->error(i18n("can't open file"));
     }
 #endif // debug
 
@@ -607,7 +607,7 @@ bool ResourceCardDav::startWriting(const TQString& url) {
     // modifies the calendar with clearChanges() or similar
     // Before these calls are made any existing read (and maybe write) threads should be finished
     if ((mLoader->running() == true) || (mLoadingQueue.isEmpty() == false) || (mWriter->running() == true) || (mWritingQueue.isEmpty() == false)) {
-        if (mWriteRetryTimer == NULL) {
+        if (!mWriteRetryTimer) {
             mWriteRetryTimer = new TQTimer(this);
             connect( mWriteRetryTimer, TQ_SIGNAL(timeout()), TQ_SLOT(doSave()) );
         }
@@ -640,11 +640,11 @@ void ResourceCardDav::writingFinished() {
 
     if (mWriter->error() && (abs(mWriter->errorNumber()) != 207)) {
         if (mWriter->errorNumber() == -401) {
-            if (NULL != mPrefs) {
+            if (mPrefs) {
                 TQString newpass;
-                if (KPasswordDialog::getPassword (newpass, TQString("<b>") + i18n("Remote authorization required") + TQString("</b><p>") + i18n("Please input the password for") + TQString(" ") + mPrefs->getusername(), NULL) != 1) {
+                if (KPasswordDialog::getPassword (newpass, TQString("<b>") + i18n("Remote authorization required") + TQString("</b><p>") + i18n("Please input the password for") + TQString(" ") + mPrefs->getusername(), nullptr) != 1) {
                     log("write error: " + mWriter->errorString());
-                    if (addressBook() != NULL) addressBook()->error(TQString("[%1] ").arg(abs(mWriter->errorNumber())) + mWriter->errorString());
+                    if (addressBook()) addressBook()->error(TQString("[%1] ").arg(abs(mWriter->errorNumber())) + mWriter->errorString());
                 }
                 else {
                     // Set new password and try again
@@ -654,12 +654,12 @@ void ResourceCardDav::writingFinished() {
             }
             else {
                 log("write error: " + mWriter->errorString());
-                if (addressBook() != NULL) addressBook()->error(TQString("[%1] ").arg(abs(mWriter->errorNumber())) + mWriter->errorString());
+                if (addressBook()) addressBook()->error(TQString("[%1] ").arg(abs(mWriter->errorNumber())) + mWriter->errorString());
             }
         }
         else {
             log("write error: " + mWriter->errorString());
-            if (addressBook() != NULL) addressBook()->error(TQString("[%1] ").arg(abs(mWriter->errorNumber())) + mWriter->errorString());
+            if (addressBook()) addressBook()->error(TQString("[%1] ").arg(abs(mWriter->errorNumber())) + mWriter->errorString());
         }
     } else {
         log("success");
diff --git a/tderesources/lib/webdavhandler.cpp b/tderesources/lib/webdavhandler.cpp
index d3255c364..75ef8c5bf 100644
--- a/tderesources/lib/webdavhandler.cpp
+++ b/tderesources/lib/webdavhandler.cpp
@@ -186,7 +186,7 @@ TQDateTime WebdavHandler::zoneAsUtc( const TQDateTime& zone, const TQString& tim
   TQDateTime epoch;
   epoch.setTime_t( 0 );
   time_t v = epoch.secsTo( zone );
-  struct icaltimetype tt = icaltime_from_timet_with_zone( v, 0, NULL );
+  struct icaltimetype tt = icaltime_from_timet_with_zone( v, 0, nullptr );
   int offset = icaltimezone_get_utc_offset(
     icaltimezone_get_builtin_timezone( timeZoneId.latin1() ),
     &tt, &daylight );
-- 
cgit v1.2.3

