Initial import of current development status

[shipsimu.git] / ship-simu / inc / classes / main / compressor / class_NullCompressor.php

diff --git a/ship-simu/inc/classes/main/compressor/class_NullCompressor.php b/ship-simu/inc/classes/main/compressor/class_NullCompressor.php
new file mode 100644 (file)
index 0000000..4762cb8
--- /dev/null
+++ b/ship-simu/inc/classes/main/compressor/class_NullCompressor.php
@@ -0,0 +1,88 @@
+<?php
+/**
+ * Null compression and decompression class
+ */
+class NullCompressor extends BaseFrameworkSystem implements Compressor {
+       /**
+        * Private constructor
+        *
+        * @return      void
+        */
+       private function __construct () {
+               // Call parent constructor!
+               parent::constructor(__CLASS__);
+
+               // Debug message
+               if (((defined('DEBUG_COMPRESSOR')) || (defined('DEBUG_ALL'))) && (defined('DEBUG_CONSTRUCT'))) $this->getDebugInstance()->output(sprintf("[%s:] Konstruktor erreicht.<br />\n",
+                       $this->__toString()
+               ));
+
+               // Set description
+               $this->setPartDescr("Null-Kompressor");
+
+               // Create an unique ID
+               $this->createUniqueID();
+       }
+
+       /**
+        * Create a new compressor channel based a given compression handler
+        *
+        * @return      $cInstance      An instance of this class
+        */
+       public final static function createNullCompressor () {
+               // Get new instance
+               $cInstance = new NullCompressor();
+
+               // Return the compressor instance
+               return $cInstance;
+       }
+
+       /**
+        * Null compression stream
+        *
+        * @param               $streamData                     Mixed non-object stream data
+        * @return      $streamData                     The compressed stream data      
+        * @throws      InvalidObjectException  If the stream is an object
+        */
+       public function compressStream ($streamData) {
+               if (is_object($streamData)) {
+                       // Throw an exception
+                       throw new InvalidObjectException($streamData, self::EXCEPTION_UNEXPECTED_OBJECT);
+               }
+
+               // Return the compressed stream
+               return $streamData;
+       }
+
+       /**
+        * Null decompression stream
+        *
+        * @param               $streamData                     Mixed non-object stream data
+        * @return      $streamData                     The decompressed stream data    
+        * @throws      InvalidObjectException  If the stream is an object
+        */
+       public function decompressStream ($streamData) {
+               if (is_object($streamData)) {
+                       // Throw an exception
+                       throw new InvalidObjectException($streamData, self::EXCEPTION_UNEXPECTED_OBJECT);
+               }
+
+               // Return the decompressed stream
+               return $streamData;
+       }
+
+       /**
+        * Getter for the file extension of this compressor
+        *
+        * @return      $string Returns always "bz2"
+        */
+       public final function getCompressorExtension () {
+               if ((defined('DEBUG_COMPRESSOR')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:] Dateierweiterung angefordert.<br />\n",
+                       $this->__toString()
+               ));
+               return "null";
+       }
+}
+
+// [EOF]
+?>