]> git.mxchange.org Git - core.git/blobdiff - framework/main/classes/template/class_BaseTemplateEngine.php
Continued:
[core.git] / framework / main / classes / template / class_BaseTemplateEngine.php
index 05f39746b38f8c9f62244cfa3ebc6076d0d90de3..dccbddc41df98b31ab945f89005e05fad5c9bb28 100644 (file)
@@ -5,18 +5,19 @@ namespace Org\Mxchange\CoreFramework\Template\Engine;
 // Import framework stuff
 use Org\Mxchange\CoreFramework\Bootstrap\FrameworkBootstrap;
 use Org\Mxchange\CoreFramework\EntryPoint\ApplicationEntryPoint;
-use Org\Mxchange\CoreFramework\Factory\ObjectFactory;
-use Org\Mxchange\CoreFramework\Handler\Stream\IoHandler;
+use Org\Mxchange\CoreFramework\Factory\Object\ObjectFactory;
 use Org\Mxchange\CoreFramework\Filesystem\FileNotFoundException;
+use Org\Mxchange\CoreFramework\Generic\FrameworkInterface;
 use Org\Mxchange\CoreFramework\Generic\NullPointerException;
+use Org\Mxchange\CoreFramework\Helper\Application\ApplicationHelper;
 use Org\Mxchange\CoreFramework\Manager\ManageableApplication;
 use Org\Mxchange\CoreFramework\Object\BaseFrameworkSystem;
-use Org\Mxchange\CoreFramework\Registry\GenericRegistry;
 use Org\Mxchange\CoreFramework\Response\Responseable;
-use Org\Mxchange\CoreFramework\Stacker\Stackable;
-use Org\Mxchange\CoreFramework\Utils\String\StringUtils;
+use Org\Mxchange\CoreFramework\Traits\Handler\Io\IoHandlerTrait;
+use Org\Mxchange\CoreFramework\Utils\Strings\StringUtils;
 
 // Import SPL stuff
+use \BadMethodCallException;
 use \InvalidArgumentException;
 use \SplFileInfo;
 
@@ -25,7 +26,7 @@ use \SplFileInfo;
  *
  * @author             Roland Haeder <webmaster@shipsimu.org>
  * @version            0.0.0
- * @copyright  Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2020 Core Developer Team
+ * @copyright  Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2023 Core Developer Team
  * @license            GNU GPL 3.0 or any newer version
  * @link               http://www.shipsimu.org
  *
@@ -43,6 +44,9 @@ use \SplFileInfo;
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 abstract class BaseTemplateEngine extends BaseFrameworkSystem {
+       // Load traits
+       use IoHandlerTrait;
+
        // Exception codes for the template engine
        const EXCEPTION_TEMPLATE_TYPE_IS_UNEXPECTED   = 0x110;
        const EXCEPTION_TEMPLATE_CONTAINS_INVALID_VAR = 0x111;
@@ -50,9 +54,9 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
        const EXCEPTION_VARIABLE_IS_MISSING           = 0x113;
 
        /**
-        * The file I/O instance for the template loader
+        * HTML template type
         */
-       private $fileIoInstance = NULL;
+       private static $htmlTemplateType = 'invalid';
 
        /**
         * The local path name where all templates and sub folders for special
@@ -173,16 +177,6 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         */
        private $languageSupport = true;
 
-       /**
-        * XML compacting is disabled by default
-        */
-       private $xmlCompacting = false;
-
-       /**
-        * Instance of the stacker
-        */
-       private $stackInstance = NULL;
-
        /**
         * Protected constructor
         *
@@ -191,13 +185,21 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         */
        protected function __construct (string $className) {
                // Call parent constructor
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: className=%s - CONSTRUCTED!', $className));
                parent::__construct($className);
 
                // Init file I/O instance
                $ioInstance = ObjectFactory::createObjectByConfiguredName('file_io_class');
 
                // Set it
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: ioInstance=%s', $ioInstance->__toString()));
                $this->setFileIoInstance($ioInstance);
+
+               // "Cache" config entry
+               self::$htmlTemplateType = FrameworkBootstrap::getConfigurationInstance()->getConfigEntry('html_template_type');
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: self::htmlTemplateType=%s - EXIT!', self::$htmlTemplateType));
        }
 
        /**
@@ -209,27 +211,30 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         */
        private function getVariableIndex (string $variableName, string $variableGroup = NULL) {
                // Replace all dashes to underscores to match variables with configuration entries
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: variableName=%s,variableGroup[%s]=%s - CALLED!', $variableName, gettype($variableGroup), $variableGroup));
                $variableName = trim(StringUtils::convertDashesToUnderscores($variableName));
 
                // First everything is not found
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: variableName=%s', $variableName));
                $found = false;
 
                // If the stack is NULL, use the current group
                if (is_null($variableGroup)) {
                        // Use current group
-                       //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(__METHOD__.' currGroup=' . $this->currGroup . ' set as stack!');
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: this->currGroup=%s set as stack!', $this->currGroup));
                        $variableGroup = $this->currGroup;
                }
 
                // Is the group there?
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: variableGroup=%s', $variableGroup));
                if ($this->isVarStackSet($variableGroup)) {
                        // Now search for it
                        foreach ($this->getVarStack($variableGroup) as $index => $currEntry) {
-                               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(__METHOD__.':currGroup=' . $variableGroup . ',idx=' . $index . ',currEntry=' . $currEntry['name'] . ',variableName=' . $variableName);
                                // Is the entry found?
+                               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: index=%d,currGroup=%s,currEntry[name]=%s,variableName=%s', $index, $variableGroup, $currEntry['name'], $variableName));
                                if ($currEntry['name'] == $variableName) {
                                        // Found!
-                                       //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(__METHOD__.':FOUND!');
+                                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: index=%d - BREAK!', $index));
                                        $found = $index;
                                        break;
                                }
@@ -237,6 +242,7 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
                }
 
                // Return the current position
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: found=%d - EXIT!', $found));
                return $found;
        }
 
@@ -245,13 +251,22 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         *
         * @param       $variableGroup  Variable group to check
         * @return      $isSet                  Whether the given variable group is set
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        protected final function isVarStackSet (string $variableGroup) {
+               // Validate parameter
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: variableGroup=%s - CALLED!', $variableGroup));
+               if (empty($variableGroup)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "variableGroup" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Check it
-               $isSet = isset($this->varStack[$variableGroup]);
+               $isset = isset($this->varStack[$variableGroup]);
 
                // Return result
-               return $isSet;
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: isset=%d - EXIT!', intval($isset)));
+               return $isset;
        }
 
        /**
@@ -259,8 +274,18 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         *
         * @param       $variableGroup  Variable group to check
         * @return      $varStack               Found variable group
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        public final function getVarStack (string $variableGroup) {
+               // Validate parameter
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: variableGroup=%s - CALLED!', $variableGroup));
+               if (empty($variableGroup)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "variableGroup" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
+               // Return value
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: this->varStack[%s]()=%d - EXIT!', $variableGroup, count($this->varStack[$variableGroup])));
                return $this->varStack[$variableGroup];
        }
 
@@ -270,9 +295,21 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $variableGroup  Variable group to check
         * @param       $varStack               Variable stack to check
         * @return      void
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        protected final function setVarStack (string $variableGroup, array $varStack) {
+               // Validate parameter
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: variableGroup=%s,varStack()=%d - CALLED!', $variableGroup, count($varStack)));
+               if (empty($variableGroup)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "variableGroup" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
+               // Set var stack
                $this->varStack[$variableGroup]  = $varStack;
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
        }
 
        /**
@@ -281,18 +318,30 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $variableName   The variable we are looking for
         * @param       $variableGroup  Optional variable group to look in
         * @return      $content                Content of the variable or null if not found
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        protected function readVariable (string $variableName, string $variableGroup = NULL) {
+               // Check parameters
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: variableName=%s,variableGroup[%s]=%s - CALLED!', $variableName, gettype($variableGroup), $variableGroup));
+               if (empty($variableName)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "variableName" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               } elseif (!is_null($variableGroup) && empty($variableGroup)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "variableGroup" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Replace all dashes to underscores to match variables with configuration entries
                $variableName = trim(StringUtils::convertDashesToUnderscores($variableName));
 
                // First everything is not found
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: variableName=%s', $variableName));
                $content = NULL;
 
                // If the stack is NULL, use the current group
                if (is_null($variableGroup)) {
                        // Use current group
-                       //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(__METHOD__.' currGroup=' . $this->currGroup . ' set as stack!');
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: this->currGroup=%s set as stack!', $this->currGroup));
                        $variableGroup = $this->currGroup;
                }
 
@@ -300,13 +349,15 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
                $found = $this->getVariableIndex($variableName, $variableGroup);
 
                // Is the variable found?
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: found[]=%s', gettype($found)));
                if ($found !== false) {
                        // Read it
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->getVariableValue(%s,%s) ...', $variableGroup, $found));
                        $content = $this->getVariableValue($variableGroup, $found);
                }
 
                // Return the current position
-               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(__METHOD__.': variableGroup=' . $variableGroup . ',variableName=' . $variableName . ', content[' . gettype($content) . ']=' . $content);
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: content()=%d - EXIT!', strlen($content)));
                return $content;
        }
 
@@ -319,10 +370,15 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         */
        private function addVariable (string $variableName, $value) {
                // Set general variable group
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: variableName=%s,value[]=%s - CALLED!', $variableName, gettype($value)));
                $this->setVariableGroup('general');
 
                // Add it to the stack
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->addVariableGroup(%s,value[]=%s) ...', $variableName, gettype($value)));
                $this->addGroupVariable($variableName, $value);
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
        }
 
        /**
@@ -332,15 +388,19 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         */
        private function readCurrentGroup () {
                // Default is not found
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: CALLED!');
                $result = [];
 
                // Is the group there?
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: this->currGroup=%s', $this->currGroup));
                if ($this->isVarStackSet($this->currGroup)) {
                        // Then use it
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->getVarStack(%s) ...', $this->currGroup));
                        $result = $this->getVarStack($this->currGroup);
                }
 
                // Return result
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: result()=%d - EXIT!', count($result)));
                return $result;
        }
 
@@ -350,18 +410,29 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $groupName      Name of variable group
         * @param       $add            Whether add this group
         * @return      void
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        public function setVariableGroup (string $groupName, bool $add = true) {
+               // Check parameter
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: groupName=%s,add=%d - CALLED!', $groupName, intval($add)));
+               if (empty($groupName)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "groupName" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Set group name
-               //* DEBIG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(__METHOD__.': currGroup=' . $groupName);
                $this->currGroup = $groupName;
 
                // Skip group 'general'
                if (($groupName != 'general') && ($add === true)) {
+                       // Mark as 'OK'
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: Marking groupName=%s as OK ...', $groupdName));
                        $this->variableGroups[$groupName] = 'OK';
                }
-       }
 
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
+       }
 
        /**
         * Adds a variable to current group
@@ -369,34 +440,54 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $variableName   Variable to set
         * @param       $value                  Value to store in variable
         * @return      void
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        public function addGroupVariable (string $variableName, $value) {
+               // Check parameter
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: variableName=%s,value[]=%s - CALLED!', $variableName, gettype($value)));
+               if (empty($variableName)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "variableName" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               } elseif (is_object($value) || is_resource($value)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException(sprintf('value[]=%s is not supported', gettype($value)), FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Replace all dashes to underscores to match variables with configuration entries
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking StringUtils::convertDashesToUnderscores(%s) ...', $variableName));
                $variableName = trim(StringUtils::convertDashesToUnderscores($variableName));
 
-               // Debug message
-               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(__METHOD__.': group=' . $this->currGroup . ', variableName=' . $variableName . ', value=' . $value);
-
                // Get current variables in group
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: this->currGroup=%s,variableName=%s,value[]=%s', $this->currGroup, $variableName, gettype($value)));
                $currVars = $this->readCurrentGroup();
 
                // Append our variable
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: currVars()=%d - BEFORE!', count($currVars)));
                array_push($currVars, $this->generateVariableArray($variableName, $value));
 
                // Add it to the stack
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->setVarStack(%s,currVars()=%d) - AFTER!', $this->currGroup, count($currVars)));
                $this->setVarStack($this->currGroup, $currVars);
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
        }
 
        /**
         * Getter for variable value, throws a NoVariableException if the variable is not found
         *
         * @param       $variableGroup  Variable group to use
-        * @param       $index          Index in variable array
-        * @return      $value          Value to set
+        * @param       $index  Index in variable array
+        * @return      $value  Value to set
         */
        private function getVariableValue (string $variableGroup, int $index) {
                // Return it
-               return $this->varStack[$variableGroup][$index]['value'];
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: variableGroup=%s,index[]=%d - CALLED!', $variableGroup, $index));
+               $value = $this->varStack[$variableGroup][$index]['value'];
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: value[]=%s - EXIT!', gettype($value)));
+               return $value;
        }
 
        /**
@@ -405,23 +496,22 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $variableName   The variable we are looking for
         * @param       $value                  The value we want to store in the variable
         * @return      void
-        * @throws      NoVariableException     If the given variable is not found
         */
        private function modifyVariable (string $variableName, $value) {
                // Replace all dashes to underscores to match variables with configuration entries
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: variableName=%s,value[]=%s - CALLED!', $variableName, gettype($value)));
                $variableName = trim(StringUtils::convertDashesToUnderscores($variableName));
 
                // Get index for variable
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: this->getVariableIndex(%s) ...', $variableName));
                $index = $this->getVariableIndex($variableName);
 
-               // Is the variable set?
-               if ($index === false) {
-                       // Unset variables cannot be modified
-                       throw new NoVariableException(array($this, $variableName, $value), self::EXCEPTION_VARIABLE_IS_MISSING);
-               }
-
                // Then modify it
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: this->setVariableValue(%s,%d,value[]=%s) ...', $this->currGroup, $index, gettype($value)));
                $this->setVariableValue($this->currGroup, $index, $value);
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
        }
 
        /**
@@ -433,7 +523,12 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @return      void
         */
        private function setVariableValue (string $variableGroup, int $index, $value) {
+               // Set variable
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: variableGroup=%s,index[]=%d,value[]=%s - CALLED!', $variableGroup, $index, gettype($value)));
                $this->varStack[$variableGroup][$index]['value'] = $value;
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
        }
 
        /**
@@ -445,28 +540,47 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $variableName   Variable to set
         * @param       $value                  Value to set
         * @return      void
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        protected function setVariable (string $variableGroup, string $variableName, $value) {
+               // Check parameters
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: variableGroup=%s,variableName=%s,value[]=%s - CALLED!', $variableGroup, $variableName, gettype($value)));
+               if (empty($variableGroup)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "variableGroup" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               } elseif (empty($variableName)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "variableName" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Replace all dashes to underscores to match variables with configuration entries
                $variableName = trim(StringUtils::convertDashesToUnderscores($variableName));
 
                // Get index for variable
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: this->getVariableIndex(%s) ...', $variableName));
                $index = $this->getVariableIndex($variableName);
 
                // Is the variable set?
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: index[]=%s', gettype($index)));
                if ($index === false) {
                        // Is the stack there?
                        if (!isset($this->varStack[$variableGroup])) {
                                // Then initialize it here
+                               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: Initializing this->varStack[%s] ...', $variableGroup));
                                $this->varStack[$variableGroup] = [];
                        }
 
                        // Not found, add it
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: Pushing variableGroup=%s,variableName=%s,value[]=%s ...', $variableGroup, $variableName, gettype($value)));
                        array_push($this->varStack[$variableGroup], $this->generateVariableArray($variableName, $value));
                } else {
                        // Then modify it
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->setVariableValue(%s,%d,value[]=%s) ...', $this->currGroup, $index, gettype($value)));
                        $this->setVariableValue($this->currGroup, $index, $value);
                }
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
        }
 
        /**
@@ -479,15 +593,17 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         */
        private function generateVariableArray (string $variableName, $value) {
                // Replace all dashes to underscores to match variables with configuration entries
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: variableName=%s,value[]=%s - CALLED!', $variableName, gettype($value)));
                $variableName = trim(StringUtils::convertDashesToUnderscores($variableName));
 
                // Generate the temporary array
-               $varData = array(
+               $varData = [
                        'name'  => $variableName,
                        'value' => $value
-               );
+               ];
 
                // And return it
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: varData()=%d - EXIT!', count($varData)));
                return $varData;
        }
 
@@ -625,22 +741,40 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $index                  Index to unset
         * @param       $variableGroup  Variable group (default: currGroup)
         * @return      void
+        * @throws      InvalidArgumentException        If the variable name is left empty
+        * @throws      BadMethodCallException  If this method was called but combination of variableGroup/index isn't found
         */
        protected final function unsetVariableStackOffset (int $index, string $variableGroup = NULL) {
+               // Check variables
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: index=%d,variableGroup[%s]=%s - CALLED!', $index, gettype($variableGroup), $variableGroup));
+               if ($index < 0) {
+                       // Invalid index
+                       throw new InvalidArgumentException(sprintf('index=%d is below zero', $index), FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               } elseif (!is_null($variableGroup) && empty($variableGroup)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "variableGroup" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Is the variable group not set?
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: variableGroup[]=%s', gettype($variableGroup)));
                if (is_null($variableGroup)) {
                        // Then set it to current
                        $variableGroup = $this->currGroup;
                }
 
                // Is the entry there?
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: Checking variableGroup=%s,index=%d ...', $variableGroup, $index));
                if (!isset($this->varStack[$variableGroup][$index])) {
                        // Abort here, we need fixing!
-                       $this->debugInstance();
+                       throw new BadMethodCallException(sprintf('variableGroup=%s,index=%d does not exist, but method was invoked', $variableGroup, $index), FrameworkInterface::EXCEPTION_BAD_METHOD_CALL);
                }
 
                // Remove it
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: Unsetting variableGroup=%s,index=%d ...', $variableGroup, $index));
                unset($this->varStack[$variableGroup][$index]);
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
        }
 
        /**
@@ -651,8 +785,6 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         */
        protected final function setRawTemplateData (string $rawTemplateData) {
                // And store it in this class
-               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(__METHOD__.': ' . strlen($rawTemplateData) . ' Bytes set.');
-               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(__METHOD__.': ' . $this->currGroup . ' variables: ' . count($this->getVarStack($this->currGroup)) . ', groups=' . count($this->varStack));
                $this->rawTemplateData = $rawTemplateData;
        }
 
@@ -662,7 +794,6 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @return      $rawTemplateData        The raw data from the template
         */
        public final function getRawTemplateData () {
-               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE: ' . strlen($this->rawTemplateData) . ' Bytes read.');
                return $this->rawTemplateData;
        }
 
@@ -674,7 +805,6 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         */
        private final function setCompiledData (string $compiledData) {
                // And store it in this class
-               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE: ' . strlen($compiledData) . ' Bytes set.');
                $this->compiledData = $compiledData;
        }
 
@@ -684,7 +814,6 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @return      $compiledData   Compiled template data
         */
        public final function getCompiledData () {
-               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE: ' . strlen($this->compiledData) . ' Bytes read.');
                return $this->compiledData;
        }
 
@@ -694,9 +823,17 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $templateName   The template we shall load
         * @param       $extOther       An other extension to use
         * @return      void
+        * @throws      InvalidArgumentException        If the variable name is left empty
         * @throws      FileNotFoundException   If the template was not found
         */
        protected function loadTemplate (string $templateName, string $extOther = '') {
+               // Check parameter
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: templateName=%s,extOther=%s - CALLED!', $templateName, $extOther));
+               if (empty($templateName)) {
+                       // Throw IAE
+                       throw new InvalidArgumentException('Parameter "templateName" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Get extension for the template if empty
                if (empty($extOther)) {
                        // None provided, so get the raw one
@@ -711,6 +848,7 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
                 * now entirely done by php_intl. These old thing with language-based
                 * template paths comes from an older time.
                 */
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: ext=%s', $ext));
                $fileInstance = new SplFileInfo(sprintf('%s%s%s%s%s%s',
                        $this->getTemplateBasePath(),
                        $this->getGenericBasePath(),
@@ -721,16 +859,20 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
                ));
 
                // First try this
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: fileInstance=%s', $fileInstance->__toString()));
                try {
                        // Load the raw template data
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->loadRawTemplateData(%s) ...', $fileInstance->__toString()));
                        $this->loadRawTemplateData($fileInstance);
                } catch (FileNotFoundException $e) {
                        // If we shall load a code-template we need to switch the file extension
-                       if (($this->getTemplateType() != FrameworkBootstrap::getConfigurationInstance()->getConfigEntry('html_template_type')) && (empty($extOther))) {
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: this->templateType=%s,self::htmlTemplateType=%s,extOther=%s', $this->getTemplateType(), self::$htmlTemplateType, $extOther));
+                       if (($this->getTemplateType() != self::$htmlTemplateType) && (empty($extOther))) {
                                // Switch over to the code-template extension and try it again
                                $ext = $this->getCodeTemplateExtension();
 
                                // Try it again...
+                               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->loadTemplate(%s,%s) ...', $templateName, $ex));
                                $this->loadTemplate($templateName, $ext);
                        } else {
                                // Throw it again
@@ -738,6 +880,8 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
                        }
                }
 
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
        }
 
        /**
@@ -748,14 +892,19 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         */
        private function loadRawTemplateData (SplFileInfo $fileInstance) {
                // Load the raw template
-               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE: fileInstance=' . $fileInstance);
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: fileInstance=%s - CALLED!', $fileInstance->__toString()));
                $rawTemplateData = $this->getFileIoInstance()->loadFileContents($fileInstance);
 
                // Store the template's contents into this class
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->setRawTemplateData(%d) ...', strlen($rawTemplateData)));
                $this->setRawTemplateData($rawTemplateData);
 
                // Remember the template's file instance
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->setLastTemplate(%s) ...', $fileInstance->__toString()));
                $this->setLastTemplate($fileInstance);
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
        }
 
        /**
@@ -764,22 +913,28 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         *
         * @param       $variableName   The variable's name (shall be content or config)
         *                                                      by default
-        * @param       $variableName   The variable we want to assign
+        * @param       $configKey      Possible configuration key
         * @return      void
         */
-       private function assignTemplateVariable (string $variableName, $var) {
+       private function assignTemplateVariable (string $variableName, string $configKey = '') {
                // Replace all dashes to underscores to match variables with configuration entries
-               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE: variableName=' . $variableName . ',var=' . $var);
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: variableName=%s,configKey=%s - CALLED!', $variableName, $configKey));
                $variableName = trim(StringUtils::convertDashesToUnderscores($variableName));
 
                // Is it not a config variable?
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: variableName=%s', $variableName));
                if ($variableName != 'config') {
                        // Regular template variables
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->assignVariable(%s,"") ...', $variableName));
                        $this->assignVariable($variableName, '');
                } else {
                        // Configuration variables
-                       $this->assignConfigVariable($var);
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->assignConfigVariable(%s,"") ...', $configKey));
+                       $this->assignConfigVariable($configKey);
                }
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
        }
 
        /**
@@ -790,23 +945,31 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         */
        private function extractVariablesFromRawData (string $rawData) {
                // Search for variables
-               //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE:rawData(' . strlen($rawData) . ')=' . $rawData . ',variableMatches=' . print_r($variableMatches, true));
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: rawData(%d)=%s - CALLED!', strlen($rawData), $rawData));
                preg_match_all('/\$(\w+)(\[(\w+)\])?/', $rawData, $variableMatches);
 
                // Did we find some variables?
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: variableMatches[]=%s', gettype($variableMatches)));
                if ((is_array($variableMatches)) && (count($variableMatches) == 4) && (count($variableMatches[0]) > 0)) {
                        // Initialize all missing variables
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: variableMatches()=%d', count($variableMatches)));
                        foreach ($variableMatches[3] as $key => $var) {
                                // Variable name
+                               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: key=%s,var=%s', $key, $var));
                                $variableName = $variableMatches[1][$key];
 
                                // Workarround: Do not assign empty variables
+                               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: variableName=%s', $variableName));
                                if (!empty($var)) {
                                        // Try to assign it, empty strings are being ignored
+                                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->assignTemplateVariable(%s,%s) ...', $variableName, $var));
                                        $this->assignTemplateVariable($variableName, $var);
                                }
                        }
                }
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
        }
 
        /**
@@ -825,9 +988,11 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         */
        private function analyzeTemplate (array $templateMatches) {
                // Backup raw template data
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: templateMatches()=%d', count($templateMatches)));
                $backup = $this->getRawTemplateData();
 
                // Initialize some arrays
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: backup[%s]()=%d,this->loadedRawData[]=%s', gettype($backup), strlen($backup), gettype($this->loadedRawData)));
                if (is_null($this->loadedRawData)) {
                        // Initialize both
                        $this->loadedRawData = [];
@@ -835,32 +1000,41 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
                }
 
                // Load all requested templates
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: templateMatches[1]()=%d', count($templateMatches[1])));
                foreach ($templateMatches[1] as $template) {
                        // Load and compile only templates which we have not yet loaded
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: template=%s', $template));
                        // RECURSIVE PROTECTION! BE CAREFUL HERE!
                        if ((!isset($this->loadedRawData[$template])) && (!in_array($template, $this->loadedTemplates))) {
-                               // Debug message
-                               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE:template=' . $template);
-
                                // Template not found, but maybe variable assigned?
+                               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('BASE-TEMPLATE: template=%s not loaded yet', $template));
                                if ($this->getVariableIndex($template) !== false) {
                                        // Use that content here
+                                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('BASE-TEMPLATE: Assigning this->loadedTemplateData[%s] from variable template=%s ...', $template, $template));
                                        $this->loadedRawData[$template] = $this->readVariable($template);
 
                                        // Recursive protection:
+                                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('BASE-TEMPLATE: Marking template=%s as loaded ...', $template));
                                        array_push($this->loadedTemplates, $template);
                                } else {
                                        // Then try to search for code-templates
+                                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: template=%s is maybe name of code template?', $template));
                                        try {
-                                               // Load the code template and remember it's contents
+                                               // Load the code template ...
+                                               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->loadCodeTemplate(%s) ...', $template));
                                                $this->loadCodeTemplate($template);
+
+                                               // ... and remember it's contents
+                                               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('BASE-TEMPLATE: Setting this->loadedRawData[%s] from this->rawTemplateData ...', $template));
                                                $this->loadedRawData[$template] = $this->getRawTemplateData();
 
                                                // Remember this template for recursion detection
                                                // RECURSIVE PROTECTION!
+                                               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('BASE-TEMPLATE: Marking template=%s as loaded ...', $template));
                                                array_push($this->loadedTemplates, $template);
                                        } catch (FileNotFoundException $e) {
                                                // Even this is not done... :/
+                                               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('BASE-TEMPLATE: Marking template=%s as loaded ...', $template));
                                                array_push($this->rawTemplates, $template);
                                        }
                                }
@@ -868,7 +1042,11 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
                }
 
                // Restore the raw template data
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->setRawTemplateData(backup()=%d) ...', strlen($backup)));
                $this->setRawTemplateData($backup);
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
        }
 
        /**
@@ -880,30 +1058,41 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         */
        private function compileCode (string $code, string $template) {
                // Is this template already compiled?
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: code=%s,template=%s - CALLED!', $code, $template));
                if (in_array($template, $this->compiledTemplates)) {
                        // Abort here...
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Found template=%s in this->compiledTemplates - EXIT!', $template));
                        return;
                }
 
                // Remember this template being compiled
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: Adding template=%s to this->compiledTemplates ...', $template));
                array_push($this->compiledTemplates, $template);
 
                // Compile the loaded code in five steps:
                //
                // 1. Backup current template data
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: this->compiledTemplates()=%d', count($this->compiledTemplates)));
                $backup = $this->getRawTemplateData();
 
                // 2. Set the current template's raw data as the new content
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->setRawTemplateData(code()=%d) ... - backup[%s]()=%d', strlen($code), gettype($backup), strlen($backup)));
                $this->setRawTemplateData($code);
 
                // 3. Compile the template data
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: Invoking this->compileTemplate() ...');
                $this->compileTemplate();
 
                // 4. Remember it's contents
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('BASE-TEMPLATE: Setting this->loadedRawData[%s] from this->rawTemplateData ...', $template));
                $this->loadedRawData[$template] = $this->getRawTemplateData();
 
                // 5. Restore the previous raw content from backup variable
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: Invoking this->setRawTemplateData(backup()=%d) ...', strlen($backup)));
                $this->setRawTemplateData($backup);
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
        }
 
        /**
@@ -915,24 +1104,30 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         */
        private function insertAllTemplates (array $templateMatches) {
                // Run through all loaded codes
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage(sprintf('BASE-TEMPLATE: templateMatches()=%d', count($templateMatches)));
                foreach ($this->loadedRawData as $template => $code) {
-
                        // Search for the template
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: template=%s,code()=%d', $template, strlen($code)));
                        $foundIndex = array_search($template, $templateMatches[1]);
 
                        // Lookup the matching template replacement
+                       /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: foundIndex[%s]=d', gettype($foundIndex), $foundIndex));
                        if (($foundIndex !== false) && (isset($templateMatches[0][$foundIndex]))) {
-
                                // Get the current raw template
                                $rawData = $this->getRawTemplateData();
 
                                // Replace the space holder with the template code
+                               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: rawData()=%s - BEFORE!', strlen($rawData)));
                                $rawData = str_replace($templateMatches[0][$foundIndex], $code, $rawData);
 
                                // Set the new raw data
+                               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugMessage(sprintf('BASE-TEMPLATE: rawData()=%s - AFTER!', strlen($rawData)));
                                $this->setRawTemplateData($rawData);
                        }
                }
+
+               // Trace message
+               /* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->traceMessage('BASE-TEMPLATE: EXIT!');
        }
 
        /**
@@ -974,10 +1169,8 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @todo        Unfinished work or don't die here.
         */
        private function assignAllVariables (array $varMatches) {
-               // Debug message
-               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE:varMatches()=' . count($varMatches));
-
                // Search for all variables
+               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE:varMatches()=' . count($varMatches));
                foreach ($varMatches[1] as $key => $var) {
                        // Replace all dashes to underscores to match variables with configuration entries
                        $var = trim(StringUtils::convertDashesToUnderscores($var));
@@ -1009,10 +1202,8 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @return      void
         */
        private function compileRawTemplateData (array $templateMatches) {
-               // Debug message
-               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE:loadedRawData()= ' .count($this->loadedRawData));
-
                // Are some code-templates found which we need to compile?
+               //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE:loadedRawData()= ' .count($this->loadedRawData));
                if (count($this->loadedRawData) > 0) {
                        // Then compile all!
                        foreach ($this->loadedRawData as $template => $code) {
@@ -1071,13 +1262,6 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
                $content = $this->getRawTemplateData();
                //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE: content before=' . strlen($content) . ' (' . md5($content) . ')');
 
-               // Do we have the stack?
-               if (!$this->isVarStackSet('general')) {
-                       // Abort here silently
-                       // @TODO This silent abort should be logged, maybe.
-                       return;
-               }
-
                // Walk through all variables
                foreach ($this->getVarStack('general') as $currEntry) {
                        //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE: name=' . $currEntry['name'] . ', value=<pre>' . htmlentities($currEntry['value']) . '</pre>');
@@ -1103,10 +1287,17 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $template       The web template we shall load which is located in
         *                                              'html' by default
         * @return      void
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        public function loadHtmlTemplate (string $template) {
+               // Validate parameter
+               if (empty($template)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "template" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Set template type
-               $this->setTemplateType(FrameworkBootstrap::getConfigurationInstance()->getConfigEntry('html_template_type'));
+               $this->setTemplateType(self::$htmlTemplateType);
 
                // Load the special template
                $this->loadTemplate($template);
@@ -1124,7 +1315,7 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
                // Validate parameter
                if (empty($variableName)) {
                        // Throw an exception
-                       throw new InvalidArgumentException('Parameter "variableName" is empty');
+                       throw new InvalidArgumentException('Parameter "variableName" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
                }
 
                // Replace all dashes to underscores to match variables with configuration entries
@@ -1151,8 +1342,18 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $variableName   The variable we are looking for
         * @param       $variableGroup  Name of variable group (default: 'general')
         * @return      void
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        public final function removeVariable (string $variableName, string $variableGroup = 'general') {
+               // Validate parameter
+               if (empty($variableName)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "variableName" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               } elseif (empty($variableGroup)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "variableGroup" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // First search for the variable if it was already added
                $index = $this->getVariableIndex($variableName, $variableGroup);
 
@@ -1170,8 +1371,18 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $templateName   Name of the template we want to assign
         * @param       $variableName   Name of the variable we want to assign
         * @return      void
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        public function assignTemplateWithVariable (string $templateName, string $variableName) {
+               // Validate parameter
+               if (empty($templateName)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "templateName" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               } elseif (empty($variableName)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "variableName" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Get the content from last loaded raw template
                $content = $this->getRawTemplateData();
 
@@ -1187,8 +1398,15 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         *
         * @param       $variableName   The configuration variable we want to assign
         * @return      void
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        public function assignConfigVariable (string $variableName) {
+               // Validate parameter
+               if (empty($variableName)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "variableName" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Replace all dashes to underscores to match variables with configuration entries
                $variableName = trim(StringUtils::convertDashesToUnderscores($variableName));
 
@@ -1222,7 +1440,7 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         */
        public function assignApplicationData () {
                // Get application instance
-               $applicationInstance = GenericRegistry::getRegistry()->getInstance('application');
+               $applicationInstance = ApplicationHelper::getSelfInstance();
 
                // Get long name and assign it
                $this->assignVariable('app_full_name' , $applicationInstance->getAppName());
@@ -1243,8 +1461,15 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $template       The code template we shall load which is
         *                                              located in 'code' by default
         * @return      void
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        public function loadCodeTemplate (string $template) {
+               // Validate parameter
+               if (empty($template)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "template" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Set template type
                $this->setTemplateType(FrameworkBootstrap::getConfigurationInstance()->getConfigEntry('code_' . FrameworkBootstrap::getRequestTypeFromSystem() . '_template_type'));
 
@@ -1258,8 +1483,15 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $template       The email template we shall load which is
         *                                              located in 'emails' by default
         * @return      void
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        public function loadEmailTemplate (string $template) {
+               // Validate parameter
+               if (empty($template)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "template" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Set template type
                $this->setTemplateType(FrameworkBootstrap::getConfigurationInstance()->getConfigEntry('email_template_type'));
 
@@ -1457,8 +1689,15 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         *
         * @param       $helperName             The helper's name
         * @return      void
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        protected function loadViewHelper (string $helperName) {
+               // Validate parameter
+               if (empty($helperName)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "helperName" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Is this view helper loaded?
                if (!isset($this->helpers[$helperName])) {
                        // Create a class name
@@ -1489,8 +1728,15 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $rawCode                        Raw code to compile
         * @param       $setMatchAsCode         Sets $match if readVariable() returns empty result
         * @return      $rawCode        Compile code with inserted variable value
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        public function compileRawCode (string $rawCode, bool $setMatchAsCode = false) {
+               // Validate parameter
+               if (empty($rawCode)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "rawCode" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Find the variables
                //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE:rawCode=<pre>' . htmlentities($rawCode) . '</pre>');
                preg_match_all($this->regExpVarValue, $rawCode, $varMatches);
@@ -1543,9 +1789,19 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @param       $oldName        Old name of variable
         * @param       $newName        New name of variable
         * @return      void
+        * @throws      InvalidArgumentException        If the variable name is left empty
         */
        public function renameVariable (string $oldName, string $newName) {
+               // Validate parameter
                //* DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('BASE-TEMPLATE: oldName=' . $oldName . ', newName=' . $newName);
+               if (empty($oldName)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "oldName" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               } elseif (empty($newName)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "newName" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // Get raw template code
                $rawData = $this->getRawTemplateData();
 
@@ -1556,33 +1812,6 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
                $this->setRawTemplateData($rawData);
        }
 
-       /**
-        * Renders the given XML content
-        *
-        * @param       $content        Valid XML content or if not set the current loaded raw content
-        * @return      void
-        * @throws      XmlParserException      If an XML error was found
-        */
-       public function renderXmlContent (string $content = NULL) {
-               // Is the content set?
-               if (is_null($content)) {
-                       // Get current content
-                       $content = $this->getRawTemplateData();
-               }
-
-               // Get a XmlParser instance
-               $parserInstance = ObjectFactory::createObjectByConfiguredName('xml_parser_class', array($this));
-
-               // Check if XML compacting is enabled
-               if ($this->isXmlCompactingEnabled()) {
-                       // Yes, so get a decorator class for transparent compacting
-                       $parserInstance = ObjectFactory::createObjectByConfiguredName('deco_compacting_xml_parser_class', array($parserInstance));
-               }
-
-               // Parse the XML document
-               $parserInstance->parseXmlContent($content);
-       }
-
        /**
         * Enables or disables language support
         *
@@ -1602,63 +1831,6 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
                return $this->languageSupport;
        }
 
-       /**
-        * Enables or disables XML compacting
-        *
-        * @param       $xmlCompacting  New XML compacting setting
-        * @return      void
-        */
-       public final function enableXmlCompacting (bool $xmlCompacting = true) {
-               $this->xmlCompacting = $xmlCompacting;
-       }
-
-       /**
-        * Checks whether XML compacting is enabled
-        *
-        * @return      $xmlCompacting  Whether XML compacting is enabled or disabled
-        */
-       public final function isXmlCompactingEnabled () {
-               return $this->xmlCompacting;
-       }
-
-       /**
-        * Private getter for file IO instance
-        *
-        * @return      $fileIoInstance         An instance to the file I/O sub-system
-        */
-       protected final function getFileIoInstance () {
-               return $this->fileIoInstance;
-       }
-
-       /**
-        * Setter for file I/O instance
-        *
-        * @param       $fileIoInstance         An instance to the file I/O sub-system
-        * @return      void
-        */
-       public final function setFileIoInstance (IoHandler $fileIoInstance) {
-               $this->fileIoInstance = $fileIoInstance;
-       }
-
-       /**
-        * Setter for stacker instance
-        *
-        * @param       $stackInstance  An instance of an stacker
-        * @return      void
-        */
-       protected final function setStackInstance (Stackable $stackInstance) {
-               $this->stackInstance = $stackInstance;
-       }
-
-       /**
-        * Getter for stacker instance
-        *
-        * @return      $stackInstance  An instance of an stacker
-        */
-       public final function getStackInstance () {
-               return $this->stackInstance;
-       }
-
        /**
         * Removes all commentd, tabs and new-line characters to compact the content
         *
@@ -1666,6 +1838,12 @@ abstract class BaseTemplateEngine extends BaseFrameworkSystem {
         * @return      $compactedContent               The compacted content
         */
        public function compactContent (string $uncompactedContent) {
+               // Validate parameter
+               if (empty($uncompactedContent)) {
+                       // Throw an exception
+                       throw new InvalidArgumentException('Parameter "uncompactedContent" is empty', FrameworkInterface::EXCEPTION_INVALID_ARGUMENT);
+               }
+
                // First, remove all tab/new-line/revert characters
                $compactedContent = str_replace(chr(9), '', str_replace(chr(10), '', str_replace(chr(13), '', $uncompactedContent)));