diff --git a/Classes/PHPExcel.php b/Classes/PHPExcel.php
index c94fa975..c3ec0519 100644
--- a/Classes/PHPExcel.php
+++ b/Classes/PHPExcel.php
@@ -1,4 +1,11 @@
 <?php
+
+/** PHPExcel root directory */
+if (!defined('PHPEXCEL_ROOT')) {
+    define('PHPEXCEL_ROOT', dirname(__FILE__) . '/');
+    require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+}
+
 /**
  * PHPExcel
  *
@@ -24,22 +31,6 @@
  * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
  * @version    ##VERSION##, ##DATE##
  */
-
-
-/** PHPExcel root directory */
-if (!defined('PHPEXCEL_ROOT')) {
-    define('PHPEXCEL_ROOT', dirname(__FILE__) . '/');
-    require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
-}
-
-
-/**
- * PHPExcel
- *
- * @category   PHPExcel
- * @package    PHPExcel
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
 class PHPExcel
 {
     /**
@@ -47,282 +38,298 @@ class PHPExcel
      *
      * @var string
      */
-    private $_uniqueID;
+    private $uniqueID;
 
     /**
      * Document properties
      *
      * @var PHPExcel_DocumentProperties
      */
-    private $_properties;
+    private $properties;
 
     /**
      * Document security
      *
      * @var PHPExcel_DocumentSecurity
      */
-    private $_security;
+    private $security;
 
     /**
      * Collection of Worksheet objects
      *
      * @var PHPExcel_Worksheet[]
      */
-    private $_workSheetCollection = array();
+    private $workSheetCollection = array();
 
     /**
-	 * Calculation Engine
-	 *
-	 * @var PHPExcel_Calculation
-	 */
-	private $_calculationEngine = NULL;
+     * Calculation Engine
+     *
+     * @var PHPExcel_Calculation
+     */
+    private $calculationEngine;
 
     /**
      * Active sheet index
      *
-     * @var int
+     * @var integer
      */
-    private $_activeSheetIndex = 0;
+    private $activeSheetIndex = 0;
 
     /**
      * Named ranges
      *
      * @var PHPExcel_NamedRange[]
      */
-    private $_namedRanges = array();
+    private $namedRanges = array();
 
     /**
      * CellXf supervisor
      *
      * @var PHPExcel_Style
      */
-    private $_cellXfSupervisor;
+    private $cellXfSupervisor;
 
     /**
      * CellXf collection
      *
      * @var PHPExcel_Style[]
      */
-    private $_cellXfCollection = array();
+    private $cellXfCollection = array();
 
     /**
      * CellStyleXf collection
      *
      * @var PHPExcel_Style[]
      */
-    private $_cellStyleXfCollection = array();
+    private $cellStyleXfCollection = array();
 
-	/**
-	* _hasMacros : this workbook have macros ?
-	*
-	* @var bool
-	*/
-	private $_hasMacros = FALSE;
+    /**
+    * hasMacros : this workbook have macros ?
+    *
+    * @var bool
+    */
+    private $hasMacros = false;
 
-	/**
-	* _macrosCode : all macros code (the vbaProject.bin file, this include form, code,  etc.), NULL if no macro
-	*
-	* @var binary
-	*/
-	private $_macrosCode=NULL;
-	/**
-	* _macrosCertificate : if macros are signed, contains vbaProjectSignature.bin file, NULL if not signed
-	*
-	* @var binary
-	*/
-	private $_macrosCertificate=NULL;
+    /**
+    * macrosCode : all macros code (the vbaProject.bin file, this include form, code,  etc.), null if no macro
+    *
+    * @var binary
+    */
+    private $macrosCode;
+    /**
+    * macrosCertificate : if macros are signed, contains vbaProjectSignature.bin file, null if not signed
+    *
+    * @var binary
+    */
+    private $macrosCertificate;
 
-	/**
-	* _ribbonXMLData : NULL if workbook is'nt Excel 2007 or not contain a customized UI
-	*
-	* @var NULL|string
-	*/
-	private $_ribbonXMLData=NULL;
+    /**
+    * ribbonXMLData : null if workbook is'nt Excel 2007 or not contain a customized UI
+    *
+    * @var null|string
+    */
+    private $ribbonXMLData;
 
-	/**
-	* _ribbonBinObjects : NULL if workbook is'nt Excel 2007 or not contain embedded objects (picture(s)) for Ribbon Elements
-	* ignored if $_ribbonXMLData is null
-	*
-	* @var NULL|array
-	*/
-	private $_ribbonBinObjects=NULL;
+    /**
+    * ribbonBinObjects : null if workbook is'nt Excel 2007 or not contain embedded objects (picture(s)) for Ribbon Elements
+    * ignored if $ribbonXMLData is null
+    *
+    * @var null|array
+    */
+    private $ribbonBinObjects;
 
-	/**
-	* The workbook has macros ?
-	*
-	* @return true if workbook has macros, false if not
-	*/
-	public function hasMacros(){
-		return $this->_hasMacros;
-	}
+    /**
+    * The workbook has macros ?
+    *
+    * @return true if workbook has macros, false if not
+    */
+    public function hasMacros()
+    {
+        return $this->hasMacros;
+    }
 
-	/**
-	* Define if a workbook has macros
-	*
-	* @param true|false
-	*/
-	public function setHasMacros($hasMacros=false){
-		$this->_hasMacros=(bool)$hasMacros;
-	}
+    /**
+    * Define if a workbook has macros
+    *
+    * @param boolean $hasMacros true|false
+    */
+    public function setHasMacros($hasMacros = false)
+    {
+        $this->hasMacros = (bool) $hasMacros;
+    }
 
-	/**
-	* Set the macros code
-	*
-	* @param binary string|null
-	*/
-	public function setMacrosCode($MacrosCode){
-		$this->_macrosCode=$MacrosCode;
-		$this->setHasMacros(!is_null($MacrosCode));
-	}
+    /**
+    * Set the macros code
+    *
+    * @param string $MacrosCode string|null
+    */
+    public function setMacrosCode($MacrosCode = null)
+    {
+        $this->macrosCode=$MacrosCode;
+        $this->setHasMacros(!is_null($MacrosCode));
+    }
 
-	/**
-	* Return the macros code
-	*
-	* @return binary|null
-	*/
-	public function getMacrosCode(){
-		return $this->_macrosCode;
-	}
+    /**
+    * Return the macros code
+    *
+    * @return string|null
+    */
+    public function getMacrosCode()
+    {
+        return $this->macrosCode;
+    }
 
-	/**
-	* Set the macros certificate
-	*
-	* @param binary|null
-	*/
-	public function setMacrosCertificate($Certificate=NULL){
-		$this->_macrosCertificate=$Certificate;
-	}
+    /**
+    * Set the macros certificate
+    *
+    * @param string|null $Certificate
+    */
+    public function setMacrosCertificate($Certificate = null)
+    {
+        $this->macrosCertificate=$Certificate;
+    }
 
-	/**
-	* Is the project signed ?
-	*
-	* @return true|false
-	*/
-	public function hasMacrosCertificate(){
-		return !is_null($this->_macrosCertificate);
-	}
+    /**
+    * Is the project signed ?
+    *
+    * @return boolean true|false
+    */
+    public function hasMacrosCertificate()
+    {
+        return !is_null($this->macrosCertificate);
+    }
 
-	/**
-	* Return the macros certificate
-	*
-	* @return binary|null
-	*/
-	public function getMacrosCertificate(){
-		return $this->_macrosCertificate;
-	}
+    /**
+    * Return the macros certificate
+    *
+    * @return string|null
+    */
+    public function getMacrosCertificate()
+    {
+        return $this->macrosCertificate;
+    }
 
-	/**
-	* Remove all macros, certificate from spreadsheet
-	*
-	* @param none
-	* @return void
-	*/
-	public function discardMacros(){
-		$this->_hasMacros=false;
-		$this->_macrosCode=NULL;
-		$this->_macrosCertificate=NULL;
-	}
+    /**
+    * Remove all macros, certificate from spreadsheet
+    *
+    */
+    public function discardMacros()
+    {
+        $this->hasMacros=false;
+        $this->macrosCode=null;
+        $this->macrosCertificate=null;
+    }
 
-	/**
-	* set ribbon XML data
-	*
-	*/
-	public function setRibbonXMLData($Target=NULL, $XMLData=NULL){
-		if(!is_null($Target) && !is_null($XMLData)){
-			$this->_ribbonXMLData=array('target'=>$Target, 'data'=>$XMLData);
-		}else{
-			$this->_ribbonXMLData=NULL;
-		}
-	}
+    /**
+    * set ribbon XML data
+    *
+    */
+    public function setRibbonXMLData($Target = null, $XMLData = null)
+    {
+        if (!is_null($Target) && !is_null($XMLData)) {
+            $this->ribbonXMLData = array('target' => $Target, 'data' => $XMLData);
+        } else {
+            $this->ribbonXMLData = null;
+        }
+    }
 
-	/**
-	* retrieve ribbon XML Data
-	*
-	* return string|null|array
-	*/
-	public function getRibbonXMLData($What='all'){//we need some constants here...
-		$ReturnData=NULL;
-		$What=strtolower($What);
-		switch($What){
-		case 'all':
-			$ReturnData=$this->_ribbonXMLData;
-			break;
-		case 'target':
-		case 'data':
-			if(is_array($this->_ribbonXMLData) && array_key_exists($What,$this->_ribbonXMLData)){
-				$ReturnData=$this->_ribbonXMLData[$What];
-			}//else $ReturnData stay at null
-			break;
-		}//default: $ReturnData at null
-		return $ReturnData;
-	}
+    /**
+    * retrieve ribbon XML Data
+    *
+    * return string|null|array
+    */
+    public function getRibbonXMLData($What = 'all') //we need some constants here...
+    {
+        $ReturnData = null;
+        $What = strtolower($What);
+        switch ($What){
+            case 'all':
+                $ReturnData = $this->ribbonXMLData;
+                break;
+            case 'target':
+            case 'data':
+                if (is_array($this->ribbonXMLData) && array_key_exists($What, $this->ribbonXMLData)) {
+                    $ReturnData = $this->ribbonXMLData[$What];
+                }
+                break;
+        }
 
-	/**
-	* store binaries ribbon objects (pictures)
-	*
-	*/
-	public function setRibbonBinObjects($BinObjectsNames=NULL, $BinObjectsData=NULL){
-		if(!is_null($BinObjectsNames) && !is_null($BinObjectsData)){
-			$this->_ribbonBinObjects=array('names'=>$BinObjectsNames, 'data'=>$BinObjectsData);
-		}else{
-			$this->_ribbonBinObjects=NULL;
-		}
-	}
-	/**
-	* return the extension of a filename. Internal use for a array_map callback (php<5.3 don't like lambda function)
-	*
-	*/
-	private function _getExtensionOnly($ThePath){
-		return pathinfo($ThePath, PATHINFO_EXTENSION);
-	}
+        return $ReturnData;
+    }
 
-	/**
-	* retrieve Binaries Ribbon Objects
-	*
-	*/
-	public function getRibbonBinObjects($What='all'){
-		$ReturnData=NULL;
-		$What=strtolower($What);
-		switch($What){
-		case 'all':
-			return $this->_ribbonBinObjects;
-			break;
-		case 'names':
-		case 'data':
-			if(is_array($this->_ribbonBinObjects) && array_key_exists($What, $this->_ribbonBinObjects)){
-				$ReturnData=$this->_ribbonBinObjects[$What];
-			}
-			break;
-		case 'types':
-			if(is_array($this->_ribbonBinObjects) && array_key_exists('data', $this->_ribbonBinObjects) && is_array($this->_ribbonBinObjects['data'])){
-				$tmpTypes=array_keys($this->_ribbonBinObjects['data']);
-				$ReturnData=array_unique(array_map(array($this,'_getExtensionOnly'), $tmpTypes));
-			}else
-				$ReturnData=array();//the caller want an array... not null if empty
-			break;
-		}
-		return $ReturnData;
-	}
+    /**
+    * store binaries ribbon objects (pictures)
+    *
+    */
+    public function setRibbonBinObjects($BinObjectsNames = null, $BinObjectsData = null)
+    {
+        if (!is_null($BinObjectsNames) && !is_null($BinObjectsData)) {
+            $this->ribbonBinObjects = array('names' => $BinObjectsNames, 'data' => $BinObjectsData);
+        } else {
+            $this->ribbonBinObjects = null;
+        }
+    }
+    /**
+    * return the extension of a filename. Internal use for a array_map callback (php<5.3 don't like lambda function)
+    *
+    */
+    private function getExtensionOnly($ThePath)
+    {
+        return pathinfo($ThePath, PATHINFO_EXTENSION);
+    }
 
-	/**
-	* This workbook have a custom UI ?
-	*
-	* @return true|false
-	*/
-	public function hasRibbon(){
-		return !is_null($this->_ribbonXMLData);
-	}
+    /**
+    * retrieve Binaries Ribbon Objects
+    *
+    */
+    public function getRibbonBinObjects($What = 'all')
+    {
+        $ReturnData = null;
+        $What = strtolower($What);
+        switch($What) {
+            case 'all':
+                return $this->ribbonBinObjects;
+                break;
+            case 'names':
+            case 'data':
+                if (is_array($this->ribbonBinObjects) && array_key_exists($What, $this->ribbonBinObjects)) {
+                    $ReturnData=$this->ribbonBinObjects[$What];
+                }
+                break;
+            case 'types':
+                if (is_array($this->ribbonBinObjects) &&
+                    array_key_exists('data', $this->ribbonBinObjects) && is_array($this->ribbonBinObjects['data'])) {
+                    $tmpTypes=array_keys($this->ribbonBinObjects['data']);
+                    $ReturnData = array_unique(array_map(array($this, 'getExtensionOnly'), $tmpTypes));
+                } else {
+                    $ReturnData=array(); // the caller want an array... not null if empty
+                }
+                break;
+        }
+        return $ReturnData;
+    }
 
-	/**
-	* This workbook have additionnal object for the ribbon ?
-	*
-	* @return true|false
-	*/
-	public function hasRibbonBinObjects(){
-		return !is_null($this->_ribbonBinObjects);
-	}
+    /**
+    * This workbook have a custom UI ?
+    *
+    * @return true|false
+    */
+    public function hasRibbon()
+    {
+        return !is_null($this->ribbonXMLData);
+    }
 
-	/**
+    /**
+    * This workbook have additionnal object for the ribbon ?
+    *
+    * @return true|false
+    */
+    public function hasRibbonBinObjects()
+    {
+        return !is_null($this->ribbonBinObjects);
+    }
+
+    /**
      * Check if a sheet with a specified code name already exists
      *
      * @param string $pSheetCodeName  Name of the worksheet to check
@@ -330,52 +337,52 @@ class PHPExcel
      */
     public function sheetCodeNameExists($pSheetCodeName)
     {
-		return ($this->getSheetByCodeName($pSheetCodeName) !== NULL);
+        return ($this->getSheetByCodeName($pSheetCodeName) !== null);
     }
 
-	/**
-	 * Get sheet by code name. Warning : sheet don't have always a code name !
-	 *
-	 * @param string $pName Sheet name
-	 * @return PHPExcel_Worksheet
-	 */
-	public function getSheetByCodeName($pName = '')
-	{
-		$worksheetCount = count($this->_workSheetCollection);
-		for ($i = 0; $i < $worksheetCount; ++$i) {
-			if ($this->_workSheetCollection[$i]->getCodeName() == $pName) {
-				return $this->_workSheetCollection[$i];
-			}
-		}
+    /**
+     * Get sheet by code name. Warning : sheet don't have always a code name !
+     *
+     * @param string $pName Sheet name
+     * @return PHPExcel_Worksheet
+     */
+    public function getSheetByCodeName($pName = '')
+    {
+        $worksheetCount = count($this->workSheetCollection);
+        for ($i = 0; $i < $worksheetCount; ++$i) {
+            if ($this->workSheetCollection[$i]->getCodeName() == $pName) {
+                return $this->workSheetCollection[$i];
+            }
+        }
 
-		return null;
-	}
+        return null;
+    }
 
-	 /**
-	 * Create a new PHPExcel with one Worksheet
-	 */
-	public function __construct()
-	{
-		$this->_uniqueID = uniqid();
-		$this->_calculationEngine	= PHPExcel_Calculation::getInstance($this);
+     /**
+     * Create a new PHPExcel with one Worksheet
+     */
+    public function __construct()
+    {
+        $this->uniqueID = uniqid();
+        $this->calculationEngine = PHPExcel_Calculation::getInstance($this);
 
-		// Initialise worksheet collection and add one worksheet
-		$this->_workSheetCollection = array();
-		$this->_workSheetCollection[] = new PHPExcel_Worksheet($this);
-		$this->_activeSheetIndex = 0;
+        // Initialise worksheet collection and add one worksheet
+        $this->workSheetCollection = array();
+        $this->workSheetCollection[] = new PHPExcel_Worksheet($this);
+        $this->activeSheetIndex = 0;
 
         // Create document properties
-        $this->_properties = new PHPExcel_DocumentProperties();
+        $this->properties = new PHPExcel_DocumentProperties();
 
         // Create document security
-        $this->_security = new PHPExcel_DocumentSecurity();
+        $this->security = new PHPExcel_DocumentSecurity();
 
         // Set named ranges
-        $this->_namedRanges = array();
+        $this->namedRanges = array();
 
         // Create the cellXf supervisor
-        $this->_cellXfSupervisor = new PHPExcel_Style(true);
-        $this->_cellXfSupervisor->bindParent($this);
+        $this->cellXfSupervisor = new PHPExcel_Style(true);
+        $this->cellXfSupervisor->bindParent($this);
 
         // Create the default style
         $this->addCellXf(new PHPExcel_Style);
@@ -386,10 +393,11 @@ class PHPExcel
      * Code to execute when this worksheet is unset()
      *
      */
-    public function __destruct() {
+    public function __destruct()
+    {
         PHPExcel_Calculation::unsetInstance($this);
         $this->disconnectWorksheets();
-    }    //    function __destruct()
+    }
 
     /**
      * Disconnect all worksheets from this PHPExcel workbook object,
@@ -398,24 +406,24 @@ class PHPExcel
      */
     public function disconnectWorksheets()
     {
-    	$worksheet = NULL;
-        foreach($this->_workSheetCollection as $k => &$worksheet) {
+        $worksheet = null;
+        foreach ($this->workSheetCollection as $k => &$worksheet) {
             $worksheet->disconnectCells();
-            $this->_workSheetCollection[$k] = null;
+            $this->workSheetCollection[$k] = null;
         }
         unset($worksheet);
-        $this->_workSheetCollection = array();
+        $this->workSheetCollection = array();
     }
 
-	/**
-	 * Return the calculation engine for this worksheet
-	 *
-	 * @return PHPExcel_Calculation
-	 */
-	public function getCalculationEngine()
-	{
-		return $this->_calculationEngine;
-	}	//	function getCellCacheController()
+    /**
+     * Return the calculation engine for this worksheet
+     *
+     * @return PHPExcel_Calculation
+     */
+    public function getCalculationEngine()
+    {
+        return $this->calculationEngine;
+    }    //    function getCellCacheController()
 
     /**
      * Get properties
@@ -424,7 +432,7 @@ class PHPExcel
      */
     public function getProperties()
     {
-        return $this->_properties;
+        return $this->properties;
     }
 
     /**
@@ -434,7 +442,7 @@ class PHPExcel
      */
     public function setProperties(PHPExcel_DocumentProperties $pValue)
     {
-        $this->_properties = $pValue;
+        $this->properties = $pValue;
     }
 
     /**
@@ -444,7 +452,7 @@ class PHPExcel
      */
     public function getSecurity()
     {
-        return $this->_security;
+        return $this->security;
     }
 
     /**
@@ -454,7 +462,7 @@ class PHPExcel
      */
     public function setSecurity(PHPExcel_DocumentSecurity $pValue)
     {
-        $this->_security = $pValue;
+        $this->security = $pValue;
     }
 
     /**
@@ -466,7 +474,7 @@ class PHPExcel
      */
     public function getActiveSheet()
     {
-        return $this->getSheet($this->_activeSheetIndex);
+        return $this->getSheet($this->activeSheetIndex);
     }
 
     /**
@@ -476,7 +484,7 @@ class PHPExcel
      * @return PHPExcel_Worksheet
      * @throws PHPExcel_Exception
      */
-    public function createSheet($iSheetIndex = NULL)
+    public function createSheet($iSheetIndex = null)
     {
         $newSheet = new PHPExcel_Worksheet($this);
         $this->addSheet($newSheet, $iSheetIndex);
@@ -491,7 +499,7 @@ class PHPExcel
      */
     public function sheetNameExists($pSheetName)
     {
-        return ($this->getSheetByName($pSheetName) !== NULL);
+        return ($this->getSheetByName($pSheetName) !== null);
     }
 
     /**
@@ -502,31 +510,31 @@ class PHPExcel
      * @return PHPExcel_Worksheet
      * @throws PHPExcel_Exception
      */
-    public function addSheet(PHPExcel_Worksheet $pSheet, $iSheetIndex = NULL)
+    public function addSheet(PHPExcel_Worksheet $pSheet, $iSheetIndex = null)
     {
         if ($this->sheetNameExists($pSheet->getTitle())) {
             throw new PHPExcel_Exception(
-            	"Workbook already contains a worksheet named '{$pSheet->getTitle()}'. Rename this worksheet first."
+                "Workbook already contains a worksheet named '{$pSheet->getTitle()}'. Rename this worksheet first."
             );
         }
 
-        if($iSheetIndex === NULL) {
-            if ($this->_activeSheetIndex < 0) {
-                $this->_activeSheetIndex = 0;
+        if ($iSheetIndex === null) {
+            if ($this->activeSheetIndex < 0) {
+                $this->activeSheetIndex = 0;
             }
-            $this->_workSheetCollection[] = $pSheet;
+            $this->workSheetCollection[] = $pSheet;
         } else {
             // Insert the sheet at the requested index
             array_splice(
-                $this->_workSheetCollection,
+                $this->workSheetCollection,
                 $iSheetIndex,
                 0,
                 array($pSheet)
-                );
+            );
 
             // Adjust active sheet index if necessary
-            if ($this->_activeSheetIndex >= $iSheetIndex) {
-                ++$this->_activeSheetIndex;
+            if ($this->activeSheetIndex >= $iSheetIndex) {
+                ++$this->activeSheetIndex;
             }
         }
 
@@ -546,19 +554,18 @@ class PHPExcel
     public function removeSheetByIndex($pIndex = 0)
     {
 
-        $numSheets = count($this->_workSheetCollection);
-
+        $numSheets = count($this->workSheetCollection);
         if ($pIndex > $numSheets - 1) {
             throw new PHPExcel_Exception(
-            	"You tried to remove a sheet by the out of bounds index: {$pIndex}. The actual number of sheets is {$numSheets}."
+                "You tried to remove a sheet by the out of bounds index: {$pIndex}. The actual number of sheets is {$numSheets}."
             );
         } else {
-            array_splice($this->_workSheetCollection, $pIndex, 1);
+            array_splice($this->workSheetCollection, $pIndex, 1);
         }
         // Adjust active sheet index if necessary
-        if (($this->_activeSheetIndex >= $pIndex) &&
-            ($pIndex > count($this->_workSheetCollection) - 1)) {
-            --$this->_activeSheetIndex;
+        if (($this->activeSheetIndex >= $pIndex) &&
+            ($pIndex > count($this->workSheetCollection) - 1)) {
+            --$this->activeSheetIndex;
         }
 
     }
@@ -572,14 +579,14 @@ class PHPExcel
      */
     public function getSheet($pIndex = 0)
     {
-        if (!isset($this->_workSheetCollection[$pIndex])) {
+        if (!isset($this->workSheetCollection[$pIndex])) {
             $numSheets = $this->getSheetCount();
             throw new PHPExcel_Exception(
                 "Your requested sheet index: {$pIndex} is out of bounds. The actual number of sheets is {$numSheets}."
             );
         }
 
-        return $this->_workSheetCollection[$pIndex];
+        return $this->workSheetCollection[$pIndex];
     }
 
     /**
@@ -589,7 +596,7 @@ class PHPExcel
      */
     public function getAllSheets()
     {
-        return $this->_workSheetCollection;
+        return $this->workSheetCollection;
     }
 
     /**
@@ -600,14 +607,14 @@ class PHPExcel
      */
     public function getSheetByName($pName = '')
     {
-        $worksheetCount = count($this->_workSheetCollection);
+        $worksheetCount = count($this->workSheetCollection);
         for ($i = 0; $i < $worksheetCount; ++$i) {
-            if ($this->_workSheetCollection[$i]->getTitle() === $pName) {
-                return $this->_workSheetCollection[$i];
+            if ($this->workSheetCollection[$i]->getTitle() === $pName) {
+                return $this->workSheetCollection[$i];
             }
         }
 
-        return NULL;
+        return null;
     }
 
     /**
@@ -619,7 +626,7 @@ class PHPExcel
      */
     public function getIndex(PHPExcel_Worksheet $pSheet)
     {
-        foreach ($this->_workSheetCollection as $key => $value) {
+        foreach ($this->workSheetCollection as $key => $value) {
             if ($value->getHashCode() == $pSheet->getHashCode()) {
                 return $key;
             }
@@ -640,12 +647,12 @@ class PHPExcel
     {
         $oldIndex = $this->getIndex($this->getSheetByName($sheetName));
         $pSheet = array_splice(
-            $this->_workSheetCollection,
+            $this->workSheetCollection,
             $oldIndex,
             1
         );
         array_splice(
-            $this->_workSheetCollection,
+            $this->workSheetCollection,
             $newIndex,
             0,
             $pSheet
@@ -660,7 +667,7 @@ class PHPExcel
      */
     public function getSheetCount()
     {
-        return count($this->_workSheetCollection);
+        return count($this->workSheetCollection);
     }
 
     /**
@@ -670,7 +677,7 @@ class PHPExcel
      */
     public function getActiveSheetIndex()
     {
-        return $this->_activeSheetIndex;
+        return $this->activeSheetIndex;
     }
 
     /**
@@ -682,14 +689,14 @@ class PHPExcel
      */
     public function setActiveSheetIndex($pIndex = 0)
     {
-        $numSheets = count($this->_workSheetCollection);
+        $numSheets = count($this->workSheetCollection);
 
         if ($pIndex > $numSheets - 1) {
             throw new PHPExcel_Exception(
-            	"You tried to set a sheet active by the out of bounds index: {$pIndex}. The actual number of sheets is {$numSheets}."
+                "You tried to set a sheet active by the out of bounds index: {$pIndex}. The actual number of sheets is {$numSheets}."
             );
         } else {
-            $this->_activeSheetIndex = $pIndex;
+            $this->activeSheetIndex = $pIndex;
         }
         return $this->getActiveSheet();
     }
@@ -735,13 +742,14 @@ class PHPExcel
      * @throws PHPExcel_Exception
      * @return PHPExcel_Worksheet
      */
-    public function addExternalSheet(PHPExcel_Worksheet $pSheet, $iSheetIndex = null) {
+    public function addExternalSheet(PHPExcel_Worksheet $pSheet, $iSheetIndex = null)
+    {
         if ($this->sheetNameExists($pSheet->getTitle())) {
             throw new PHPExcel_Exception("Workbook already contains a worksheet named '{$pSheet->getTitle()}'. Rename the external sheet first.");
         }
 
         // count how many cellXfs there are in this workbook currently, we will need this below
-        $countCellXfs = count($this->_cellXfCollection);
+        $countCellXfs = count($this->cellXfCollection);
 
         // copy all the shared cellXfs from the external workbook and append them to the current
         foreach ($pSheet->getParent()->getCellXfCollection() as $cellXf) {
@@ -754,7 +762,7 @@ class PHPExcel
         // update the cellXfs
         foreach ($pSheet->getCellCollection(false) as $cellID) {
             $cell = $pSheet->getCell($cellID);
-            $cell->setXfIndex( $cell->getXfIndex() + $countCellXfs );
+            $cell->setXfIndex($cell->getXfIndex() + $countCellXfs);
         }
 
         return $this->addSheet($pSheet, $iSheetIndex);
@@ -765,8 +773,9 @@ class PHPExcel
      *
      * @return PHPExcel_NamedRange[]
      */
-    public function getNamedRanges() {
-        return $this->_namedRanges;
+    public function getNamedRanges()
+    {
+        return $this->namedRanges;
     }
 
     /**
@@ -775,13 +784,14 @@ class PHPExcel
      * @param  PHPExcel_NamedRange $namedRange
      * @return PHPExcel
      */
-    public function addNamedRange(PHPExcel_NamedRange $namedRange) {
+    public function addNamedRange(PHPExcel_NamedRange $namedRange)
+    {
         if ($namedRange->getScope() == null) {
             // global scope
-            $this->_namedRanges[$namedRange->getName()] = $namedRange;
+            $this->namedRanges[$namedRange->getName()] = $namedRange;
         } else {
             // local scope
-            $this->_namedRanges[$namedRange->getScope()->getTitle().'!'.$namedRange->getName()] = $namedRange;
+            $this->namedRanges[$namedRange->getScope()->getTitle().'!'.$namedRange->getName()] = $namedRange;
         }
         return true;
     }
@@ -793,18 +803,19 @@ class PHPExcel
      * @param  PHPExcel_Worksheet|null $pSheet Scope. Use null for global scope
      * @return PHPExcel_NamedRange|null
      */
-    public function getNamedRange($namedRange, PHPExcel_Worksheet $pSheet = null) {
+    public function getNamedRange($namedRange, PHPExcel_Worksheet $pSheet = null)
+    {
         $returnValue = null;
 
-        if ($namedRange != '' && ($namedRange !== NULL)) {
+        if ($namedRange != '' && ($namedRange !== null)) {
             // first look for global defined name
-            if (isset($this->_namedRanges[$namedRange])) {
-                $returnValue = $this->_namedRanges[$namedRange];
+            if (isset($this->namedRanges[$namedRange])) {
+                $returnValue = $this->namedRanges[$namedRange];
             }
 
             // then look for local defined name (has priority over global defined name if both names exist)
-            if (($pSheet !== NULL) && isset($this->_namedRanges[$pSheet->getTitle() . '!' . $namedRange])) {
-                $returnValue = $this->_namedRanges[$pSheet->getTitle() . '!' . $namedRange];
+            if (($pSheet !== null) && isset($this->namedRanges[$pSheet->getTitle() . '!' . $namedRange])) {
+                $returnValue = $this->namedRanges[$pSheet->getTitle() . '!' . $namedRange];
             }
         }
 
@@ -818,14 +829,15 @@ class PHPExcel
      * @param  PHPExcel_Worksheet|null  $pSheet  Scope: use null for global scope.
      * @return PHPExcel
      */
-    public function removeNamedRange($namedRange, PHPExcel_Worksheet $pSheet = null) {
-        if ($pSheet === NULL) {
-            if (isset($this->_namedRanges[$namedRange])) {
-                unset($this->_namedRanges[$namedRange]);
+    public function removeNamedRange($namedRange, PHPExcel_Worksheet $pSheet = null)
+    {
+        if ($pSheet === null) {
+            if (isset($this->namedRanges[$namedRange])) {
+                unset($this->namedRanges[$namedRange]);
             }
         } else {
-            if (isset($this->_namedRanges[$pSheet->getTitle() . '!' . $namedRange])) {
-                unset($this->_namedRanges[$pSheet->getTitle() . '!' . $namedRange]);
+            if (isset($this->namedRanges[$pSheet->getTitle() . '!' . $namedRange])) {
+                unset($this->namedRanges[$pSheet->getTitle() . '!' . $namedRange]);
             }
         }
         return $this;
@@ -836,7 +848,8 @@ class PHPExcel
      *
      * @return PHPExcel_WorksheetIterator
      */
-    public function getWorksheetIterator() {
+    public function getWorksheetIterator()
+    {
         return new PHPExcel_WorksheetIterator($this);
     }
 
@@ -845,13 +858,14 @@ class PHPExcel
      *
      * @return PHPExcel
      */
-    public function copy() {
+    public function copy()
+    {
         $copied = clone $this;
 
-        $worksheetCount = count($this->_workSheetCollection);
+        $worksheetCount = count($this->workSheetCollection);
         for ($i = 0; $i < $worksheetCount; ++$i) {
-            $this->_workSheetCollection[$i] = $this->_workSheetCollection[$i]->copy();
-            $this->_workSheetCollection[$i]->rebindParent($this);
+            $this->workSheetCollection[$i] = $this->workSheetCollection[$i]->copy();
+            $this->workSheetCollection[$i]->rebindParent($this);
         }
 
         return $copied;
@@ -860,8 +874,9 @@ class PHPExcel
     /**
      * Implement PHP __clone to create a deep clone, not just a shallow copy.
      */
-    public function __clone() {
-        foreach($this as $key => $val) {
+    public function __clone()
+    {
+        foreach ($this as $key => $val) {
             if (is_object($val) || (is_array($val))) {
                 $this->{$key} = unserialize(serialize($val));
             }
@@ -875,7 +890,7 @@ class PHPExcel
      */
     public function getCellXfCollection()
     {
-        return $this->_cellXfCollection;
+        return $this->cellXfCollection;
     }
 
     /**
@@ -886,7 +901,7 @@ class PHPExcel
      */
     public function getCellXfByIndex($pIndex = 0)
     {
-        return $this->_cellXfCollection[$pIndex];
+        return $this->cellXfCollection[$pIndex];
     }
 
     /**
@@ -897,7 +912,7 @@ class PHPExcel
      */
     public function getCellXfByHashCode($pValue = '')
     {
-        foreach ($this->_cellXfCollection as $cellXf) {
+        foreach ($this->cellXfCollection as $cellXf) {
             if ($cellXf->getHashCode() == $pValue) {
                 return $cellXf;
             }
@@ -913,7 +928,7 @@ class PHPExcel
      */
     public function cellXfExists($pCellStyle = null)
     {
-        return in_array($pCellStyle, $this->_cellXfCollection, true);
+        return in_array($pCellStyle, $this->cellXfCollection, true);
     }
 
     /**
@@ -924,8 +939,8 @@ class PHPExcel
      */
     public function getDefaultStyle()
     {
-        if (isset($this->_cellXfCollection[0])) {
-            return $this->_cellXfCollection[0];
+        if (isset($this->cellXfCollection[0])) {
+            return $this->cellXfCollection[0];
         }
         throw new PHPExcel_Exception('No default style found for this workbook');
     }
@@ -937,33 +952,33 @@ class PHPExcel
      */
     public function addCellXf(PHPExcel_Style $style)
     {
-        $this->_cellXfCollection[] = $style;
-        $style->setIndex(count($this->_cellXfCollection) - 1);
+        $this->cellXfCollection[] = $style;
+        $style->setIndex(count($this->cellXfCollection) - 1);
     }
 
     /**
      * Remove cellXf by index. It is ensured that all cells get their xf index updated.
      *
-     * @param  int $pIndex Index to cellXf
+     * @param integer $pIndex Index to cellXf
      * @throws PHPExcel_Exception
      */
     public function removeCellXfByIndex($pIndex = 0)
     {
-        if ($pIndex > count($this->_cellXfCollection) - 1) {
+        if ($pIndex > count($this->cellXfCollection) - 1) {
             throw new PHPExcel_Exception("CellXf index is out of bounds.");
         } else {
             // first remove the cellXf
-            array_splice($this->_cellXfCollection, $pIndex, 1);
+            array_splice($this->cellXfCollection, $pIndex, 1);
 
             // then update cellXf indexes for cells
-            foreach ($this->_workSheetCollection as $worksheet) {
+            foreach ($this->workSheetCollection as $worksheet) {
                 foreach ($worksheet->getCellCollection(false) as $cellID) {
                     $cell = $worksheet->getCell($cellID);
                     $xfIndex = $cell->getXfIndex();
-                    if ($xfIndex > $pIndex ) {
+                    if ($xfIndex > $pIndex) {
                         // decrease xf index by 1
                         $cell->setXfIndex($xfIndex - 1);
-                    } else if ($xfIndex == $pIndex) {
+                    } elseif ($xfIndex == $pIndex) {
                         // set to default xf index 0
                         $cell->setXfIndex(0);
                     }
@@ -979,7 +994,7 @@ class PHPExcel
      */
     public function getCellXfSupervisor()
     {
-        return $this->_cellXfSupervisor;
+        return $this->cellXfSupervisor;
     }
 
     /**
@@ -989,18 +1004,18 @@ class PHPExcel
      */
     public function getCellStyleXfCollection()
     {
-        return $this->_cellStyleXfCollection;
+        return $this->cellStyleXfCollection;
     }
 
     /**
      * Get cellStyleXf by index
      *
-     * @param  int $pIndex
+     * @param integer $pIndex Index to cellXf
      * @return PHPExcel_Style
      */
     public function getCellStyleXfByIndex($pIndex = 0)
     {
-        return $this->_cellStyleXfCollection[$pIndex];
+        return $this->cellStyleXfCollection[$pIndex];
     }
 
     /**
@@ -1011,7 +1026,7 @@ class PHPExcel
      */
     public function getCellStyleXfByHashCode($pValue = '')
     {
-        foreach ($this->_cellStyleXfCollection as $cellStyleXf) {
+        foreach ($this->cellStyleXfCollection as $cellStyleXf) {
             if ($cellStyleXf->getHashCode() == $pValue) {
                 return $cellStyleXf;
             }
@@ -1026,22 +1041,22 @@ class PHPExcel
      */
     public function addCellStyleXf(PHPExcel_Style $pStyle)
     {
-        $this->_cellStyleXfCollection[] = $pStyle;
-        $pStyle->setIndex(count($this->_cellStyleXfCollection) - 1);
+        $this->cellStyleXfCollection[] = $pStyle;
+        $pStyle->setIndex(count($this->cellStyleXfCollection) - 1);
     }
 
     /**
      * Remove cellStyleXf by index
      *
-     * @param int $pIndex
+     * @param integer $pIndex Index to cellXf
      * @throws PHPExcel_Exception
      */
     public function removeCellStyleXfByIndex($pIndex = 0)
     {
-        if ($pIndex > count($this->_cellStyleXfCollection) - 1) {
+        if ($pIndex > count($this->cellStyleXfCollection) - 1) {
             throw new PHPExcel_Exception("CellStyleXf index is out of bounds.");
         } else {
-            array_splice($this->_cellStyleXfCollection, $pIndex, 1);
+            array_splice($this->cellStyleXfCollection, $pIndex, 1);
         }
     }
 
@@ -1053,12 +1068,11 @@ class PHPExcel
     {
         // how many references are there to each cellXf ?
         $countReferencesCellXf = array();
-        foreach ($this->_cellXfCollection as $index => $cellXf) {
+        foreach ($this->cellXfCollection as $index => $cellXf) {
             $countReferencesCellXf[$index] = 0;
         }
 
         foreach ($this->getWorksheetIterator() as $sheet) {
-
             // from cells
             foreach ($sheet->getCellCollection(false) as $cellID) {
                 $cell = $sheet->getCell($cellID);
@@ -1081,48 +1095,47 @@ class PHPExcel
         // remove cellXfs without references and create mapping so we can update xfIndex
         // for all cells and columns
         $countNeededCellXfs = 0;
-        foreach ($this->_cellXfCollection as $index => $cellXf) {
+        foreach ($this->cellXfCollection as $index => $cellXf) {
             if ($countReferencesCellXf[$index] > 0 || $index == 0) { // we must never remove the first cellXf
                 ++$countNeededCellXfs;
             } else {
-                unset($this->_cellXfCollection[$index]);
+                unset($this->cellXfCollection[$index]);
             }
             $map[$index] = $countNeededCellXfs - 1;
         }
-        $this->_cellXfCollection = array_values($this->_cellXfCollection);
+        $this->cellXfCollection = array_values($this->cellXfCollection);
 
         // update the index for all cellXfs
-        foreach ($this->_cellXfCollection as $i => $cellXf) {
+        foreach ($this->cellXfCollection as $i => $cellXf) {
             $cellXf->setIndex($i);
         }
 
         // make sure there is always at least one cellXf (there should be)
-        if (empty($this->_cellXfCollection)) {
-            $this->_cellXfCollection[] = new PHPExcel_Style();
+        if (empty($this->cellXfCollection)) {
+            $this->cellXfCollection[] = new PHPExcel_Style();
         }
 
         // update the xfIndex for all cells, row dimensions, column dimensions
         foreach ($this->getWorksheetIterator() as $sheet) {
-
             // for all cells
             foreach ($sheet->getCellCollection(false) as $cellID) {
                 $cell = $sheet->getCell($cellID);
-                $cell->setXfIndex( $map[$cell->getXfIndex()] );
+                $cell->setXfIndex($map[$cell->getXfIndex()]);
             }
 
             // for all row dimensions
             foreach ($sheet->getRowDimensions() as $rowDimension) {
                 if ($rowDimension->getXfIndex() !== null) {
-                    $rowDimension->setXfIndex( $map[$rowDimension->getXfIndex()] );
+                    $rowDimension->setXfIndex($map[$rowDimension->getXfIndex()]);
                 }
             }
 
             // for all column dimensions
             foreach ($sheet->getColumnDimensions() as $columnDimension) {
-                $columnDimension->setXfIndex( $map[$columnDimension->getXfIndex()] );
+                $columnDimension->setXfIndex($map[$columnDimension->getXfIndex()]);
             }
 
-			// also do garbage collection for all the sheets
+            // also do garbage collection for all the sheets
             $sheet->garbageCollect();
         }
     }
@@ -1132,8 +1145,8 @@ class PHPExcel
      *
      * @return string
      */
-    public function getID() {
-        return $this->_uniqueID;
+    public function getID()
+    {
+        return $this->uniqueID;
     }
-
 }
diff --git a/Classes/PHPExcel/Autoloader.php b/Classes/PHPExcel/Autoloader.php
index 90e5f6cb..3557e865 100644
--- a/Classes/PHPExcel/Autoloader.php
+++ b/Classes/PHPExcel/Autoloader.php
@@ -1,4 +1,15 @@
 <?php
+
+PHPExcel_Autoloader::Register();
+//    As we always try to run the autoloader before anything else, we can use it to do a few
+//        simple checks and initialisations
+//PHPExcel_Shared_ZipStreamWrapper::register();
+// check mbstring.func_overload
+if (ini_get('mbstring.func_overload') & 2) {
+    throw new PHPExcel_Exception('Multibyte function overloading in PHP must be disabled for string functions (2).');
+}
+PHPExcel_Shared_String::buildCharacterSets();
+
 /**
  * PHPExcel
  *
@@ -24,66 +35,47 @@
  * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
  * @version    ##VERSION##, ##DATE##
  */
-
-PHPExcel_Autoloader::Register();
-//    As we always try to run the autoloader before anything else, we can use it to do a few
-//        simple checks and initialisations
-//PHPExcel_Shared_ZipStreamWrapper::register();
-// check mbstring.func_overload
-if (ini_get('mbstring.func_overload') & 2) {
-    throw new PHPExcel_Exception('Multibyte function overloading in PHP must be disabled for string functions (2).');
-}
-PHPExcel_Shared_String::buildCharacterSets();
-
-
-/**
- * PHPExcel_Autoloader
- *
- * @category    PHPExcel
- * @package     PHPExcel
- * @copyright   Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
 class PHPExcel_Autoloader
 {
     /**
      * Register the Autoloader with SPL
      *
      */
-    public static function Register() {
+    public static function Register()
+    {
         if (function_exists('__autoload')) {
-            //    Register any existing autoloader function with SPL, so we don't get any clashes
+            // Register any existing autoloader function with SPL, so we don't get any clashes
             spl_autoload_register('__autoload');
         }
-        //    Register ourselves with SPL
+        // Register ourselves with SPL
         if (version_compare(PHP_VERSION, '5.3.0') >= 0) {
             return spl_autoload_register(array('PHPExcel_Autoloader', 'Load'), true, true);
         } else {
             return spl_autoload_register(array('PHPExcel_Autoloader', 'Load'));
         }
-    }   //    function Register()
-
+    }
 
     /**
      * Autoload a class identified by name
      *
      * @param    string    $pClassName        Name of the object to load
      */
-    public static function Load($pClassName){
-        if ((class_exists($pClassName,FALSE)) || (strpos($pClassName, 'PHPExcel') !== 0)) {
-            //    Either already loaded, or not a PHPExcel class request
-            return FALSE;
+    public static function Load($pClassName)
+    {
+        if ((class_exists($pClassName, false)) || (strpos($pClassName, 'PHPExcel') !== 0)) {
+            // Either already loaded, or not a PHPExcel class request
+            return false;
         }
 
         $pClassFilePath = PHPEXCEL_ROOT .
-                          str_replace('_',DIRECTORY_SEPARATOR,$pClassName) .
-                          '.php';
+            str_replace('_', DIRECTORY_SEPARATOR, $pClassName) .
+            '.php';
 
-        if ((file_exists($pClassFilePath) === FALSE) || (is_readable($pClassFilePath) === FALSE)) {
-            //    Can't load
-            return FALSE;
+        if ((file_exists($pClassFilePath) === false) || (is_readable($pClassFilePath) === false)) {
+            // Can't load
+            return false;
         }
 
         require($pClassFilePath);
-    }   //    function Load()
-
+    }
 }
diff --git a/Classes/PHPExcel/CachedObjectStorage/APC.php b/Classes/PHPExcel/CachedObjectStorage/APC.php
index 9bdeab43..d2ad6e37 100644
--- a/Classes/PHPExcel/CachedObjectStorage/APC.php
+++ b/Classes/PHPExcel/CachedObjectStorage/APC.php
@@ -1,6 +1,7 @@
 <?php
+
 /**
- * PHPExcel
+ * PHPExcel_CachedObjectStorage_APC
  *
  * Copyright (c) 2006 - 2015 PHPExcel
  *
@@ -24,17 +25,8 @@
  * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
  * @version    ##VERSION##, ##DATE##
  */
-
-
-/**
- * PHPExcel_CachedObjectStorage_APC
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
+class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
     /**
      * Prefix used to uniquely identify cache data for this worksheet
      *
@@ -51,7 +43,6 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
      */
     private $_cacheTime = 600;
 
-
     /**
      * Store cell data in cache for the current cell object if it's "dirty",
      *     and the 'nullify' the current cell object
@@ -60,19 +51,23 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
      * @return  void
      * @throws  PHPExcel_Exception
      */
-    protected function _storeData() {
+    protected function _storeData()
+    {
         if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
             $this->_currentObject->detach();
 
-            if (!apc_store($this->_cachePrefix.$this->_currentObjectID.'.cache',serialize($this->_currentObject),$this->_cacheTime)) {
+            if (!apc_store(
+                $this->_cachePrefix . $this->_currentObjectID . '.cache',
+                serialize($this->_currentObject),
+                $this->_cacheTime
+            )) {
                 $this->__destruct();
-                throw new PHPExcel_Exception('Failed to store cell '.$this->_currentObjectID.' in APC');
+                throw new PHPExcel_Exception('Failed to store cell ' . $this->_currentObjectID . ' in APC');
             }
             $this->_currentCellIsDirty = false;
         }
         $this->_currentObjectID = $this->_currentObject = null;
-    }    //    function _storeData()
-
+    }
 
     /**
      * Add or Update a cell in cache identified by coordinate address
@@ -83,7 +78,8 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
      * @return  PHPExcel_Cell
      * @throws  PHPExcel_Exception
      */
-    public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
         if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
             $this->_storeData();
         }
@@ -94,8 +90,7 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
         $this->_currentCellIsDirty = true;
 
         return $cell;
-    }    //    function addCacheData()
-
+    }
 
     /**
      * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
@@ -105,7 +100,8 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
      * @throws  PHPExcel_Exception
      * @return  boolean
      */
-    public function isDataSet($pCoord) {
+    public function isDataSet($pCoord)
+    {
         //    Check if the requested entry is the current object, or exists in the cache
         if (parent::isDataSet($pCoord)) {
             if ($this->_currentObjectID == $pCoord) {
@@ -113,7 +109,7 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
             }
             //    Check if the requested entry still exists in apc
             $success = apc_fetch($this->_cachePrefix.$pCoord.'.cache');
-            if ($success === FALSE) {
+            if ($success === false) {
                 //    Entry no longer exists in APC, so clear it from the cache array
                 parent::deleteCacheData($pCoord);
                 throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in APC cache');
@@ -121,8 +117,7 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
             return true;
         }
         return false;
-    }    //    function isDataSet()
-
+    }
 
     /**
      * Get cell at a specific coordinate
@@ -132,7 +127,8 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
      * @throws  PHPExcel_Exception
      * @return  PHPExcel_Cell  Cell that was found, or null if not found
      */
-    public function getCacheData($pCoord) {
+    public function getCacheData($pCoord)
+    {
         if ($pCoord === $this->_currentObjectID) {
             return $this->_currentObject;
         }
@@ -140,8 +136,8 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
 
         //    Check if the entry that has been requested actually exists
         if (parent::isDataSet($pCoord)) {
-            $obj = apc_fetch($this->_cachePrefix.$pCoord.'.cache');
-            if ($obj === FALSE) {
+            $obj = apc_fetch($this->_cachePrefix . $pCoord . '.cache');
+            if ($obj === false) {
                 //    Entry no longer exists in APC, so clear it from the cache array
                 parent::deleteCacheData($pCoord);
                 throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in APC cache');
@@ -159,22 +155,21 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
 
         //    Return requested entry
         return $this->_currentObject;
-    }    //    function getCacheData()
+    }
 
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->_currentObjectID !== null) {
+            $this->_storeData();
+        }
 
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return  string[]
-	 */
-	public function getCellList() {
-		if ($this->_currentObjectID !== null) {
-			$this->_storeData();
-		}
-
-		return parent::getCellList();
-	}
-
+        return parent::getCellList();
+    }
 
     /**
      * Delete a cell in cache identified by coordinate address
@@ -183,14 +178,14 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
      * @param   string  $pCoord  Coordinate address of the cell to delete
      * @throws  PHPExcel_Exception
      */
-    public function deleteCacheData($pCoord) {
+    public function deleteCacheData($pCoord)
+    {
         //    Delete the entry from APC
         apc_delete($this->_cachePrefix.$pCoord.'.cache');
 
         //    Delete the entry from our cell address array
         parent::deleteCacheData($pCoord);
-    }    //    function deleteCacheData()
-
+    }
 
     /**
      * Clone the cell collection
@@ -200,37 +195,38 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
      * @throws  PHPExcel_Exception
      * @return  void
      */
-    public function copyCellCollection(PHPExcel_Worksheet $parent) {
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
         parent::copyCellCollection($parent);
         //    Get a new id for the new file name
         $baseUnique = $this->_getUniqueID();
-        $newCachePrefix = substr(md5($baseUnique),0,8).'.';
+        $newCachePrefix = substr(md5($baseUnique), 0, 8) . '.';
         $cacheList = $this->getCellList();
-        foreach($cacheList as $cellID) {
+        foreach ($cacheList as $cellID) {
             if ($cellID != $this->_currentObjectID) {
-                $obj = apc_fetch($this->_cachePrefix.$cellID.'.cache');
-                if ($obj === FALSE) {
+                $obj = apc_fetch($this->_cachePrefix . $cellID . '.cache');
+                if ($obj === false) {
                     //    Entry no longer exists in APC, so clear it from the cache array
                     parent::deleteCacheData($cellID);
-                    throw new PHPExcel_Exception('Cell entry '.$cellID.' no longer exists in APC');
+                    throw new PHPExcel_Exception('Cell entry ' . $cellID . ' no longer exists in APC');
                 }
-                if (!apc_store($newCachePrefix.$cellID.'.cache',$obj,$this->_cacheTime)) {
+                if (!apc_store($newCachePrefix . $cellID . '.cache', $obj, $this->_cacheTime)) {
                     $this->__destruct();
-                    throw new PHPExcel_Exception('Failed to store cell '.$cellID.' in APC');
+                    throw new PHPExcel_Exception('Failed to store cell ' . $cellID . ' in APC');
                 }
             }
         }
         $this->_cachePrefix = $newCachePrefix;
-    }    //    function copyCellCollection()
-
+    }
 
     /**
      * Clear the cell collection and disconnect from our parent
      *
      * @return  void
      */
-    public function unsetWorksheetCells() {
-        if ($this->_currentObject !== NULL) {
+    public function unsetWorksheetCells()
+    {
+        if ($this->_currentObject !== null) {
             $this->_currentObject->detach();
             $this->_currentObject = $this->_currentObjectID = null;
         }
@@ -242,8 +238,7 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
 
         //    detach ourself from the worksheet, so that it can then delete this object successfully
         $this->_parent = null;
-    }    //    function unsetWorksheetCells()
-
+    }
 
     /**
      * Initialise this new cell collection
@@ -251,29 +246,29 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
      * @param  PHPExcel_Worksheet  $parent     The worksheet for this cell collection
      * @param  array of mixed      $arguments  Additional initialisation arguments
      */
-    public function __construct(PHPExcel_Worksheet $parent, $arguments) {
+    public function __construct(PHPExcel_Worksheet $parent, $arguments)
+    {
         $cacheTime = (isset($arguments['cacheTime'])) ? $arguments['cacheTime'] : 600;
 
-        if ($this->_cachePrefix === NULL) {
+        if ($this->_cachePrefix === null) {
             $baseUnique = $this->_getUniqueID();
-            $this->_cachePrefix = substr(md5($baseUnique),0,8).'.';
+            $this->_cachePrefix = substr(md5($baseUnique), 0, 8) . '.';
             $this->_cacheTime = $cacheTime;
 
             parent::__construct($parent);
         }
-    }    //    function __construct()
-
+    }
 
     /**
      * Destroy this cell collection
      */
-    public function __destruct() {
+    public function __destruct()
+    {
         $cacheList = $this->getCellList();
-        foreach($cacheList as $cellID) {
-            apc_delete($this->_cachePrefix.$cellID.'.cache');
+        foreach ($cacheList as $cellID) {
+            apc_delete($this->_cachePrefix . $cellID . '.cache');
         }
-    }    //    function __destruct()
-
+    }
 
     /**
      * Identify whether the caching method is currently available
@@ -281,15 +276,15 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
      *
      * @return  boolean
      */
-    public static function cacheMethodIsAvailable() {
+    public static function cacheMethodIsAvailable()
+    {
         if (!function_exists('apc_store')) {
-            return FALSE;
+            return false;
         }
-        if (apc_sma_info() === FALSE) {
-            return FALSE;
+        if (apc_sma_info() === false) {
+            return false;
         }
 
-        return TRUE;
+        return true;
     }
-
 }
diff --git a/Classes/PHPExcel/CachedObjectStorage/CacheBase.php b/Classes/PHPExcel/CachedObjectStorage/CacheBase.php
index 1d83600a..a7c25ed2 100644
--- a/Classes/PHPExcel/CachedObjectStorage/CacheBase.php
+++ b/Classes/PHPExcel/CachedObjectStorage/CacheBase.php
@@ -1,376 +1,368 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2015 PHPExcel
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    ##VERSION##, ##DATE##
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_CacheBase
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-abstract class PHPExcel_CachedObjectStorage_CacheBase {
-
-	/**
-	 * Parent worksheet
-	 *
-	 * @var PHPExcel_Worksheet
-	 */
-	protected $_parent;
-
-	/**
-	 * The currently active Cell
-	 *
-	 * @var PHPExcel_Cell
-	 */
-	protected $_currentObject = null;
-
-	/**
-	 * Coordinate address of the currently active Cell
-	 *
-	 * @var string
-	 */
-	protected $_currentObjectID = null;
-
-
-	/**
-	 * Flag indicating whether the currently active Cell requires saving
-	 *
-	 * @var boolean
-	 */
-	protected $_currentCellIsDirty = true;
-
-	/**
-	 * An array of cells or cell pointers for the worksheet cells held in this cache,
-	 *		and indexed by their coordinate address within the worksheet
-	 *
-	 * @var array of mixed
-	 */
-	protected $_cellCache = array();
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 */
-	public function __construct(PHPExcel_Worksheet $parent) {
-		//	Set our parent worksheet.
-		//	This is maintained within the cache controller to facilitate re-attaching it to PHPExcel_Cell objects when
-		//		they are woken from a serialized state
-		$this->_parent = $parent;
-	}	//	function __construct()
-
-
-	/**
-	 * Return the parent worksheet for this cell collection
-	 *
-	 * @return	PHPExcel_Worksheet
-	 */
-	public function getParent()
-	{
-		return $this->_parent;
-	}
-
-	/**
-	 * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
-	 *
-	 * @param	string		$pCoord		Coordinate address of the cell to check
-	 * @return	boolean
-	 */
-	public function isDataSet($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return true;
-		}
-		//	Check if the requested entry exists in the cache
-		return isset($this->_cellCache[$pCoord]);
-	}	//	function isDataSet()
-
-
-	/**
-	 * Move a cell object from one address to another
-	 *
-	 * @param	string		$fromAddress	Current address of the cell to move
-	 * @param	string		$toAddress		Destination address of the cell to move
-	 * @return	boolean
-	 */
-	public function moveCell($fromAddress, $toAddress) {
-		if ($fromAddress === $this->_currentObjectID) {
-			$this->_currentObjectID = $toAddress;
-		}
-		$this->_currentCellIsDirty = true;
-		if (isset($this->_cellCache[$fromAddress])) {
-			$this->_cellCache[$toAddress] = &$this->_cellCache[$fromAddress];
-			unset($this->_cellCache[$fromAddress]);
-		}
-
-		return TRUE;
-	}	//	function moveCell()
-
-
-    /**
-     * Add or Update a cell in cache
-     *
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	PHPExcel_Cell
-     * @throws	PHPExcel_Exception
-     */
-	public function updateCacheData(PHPExcel_Cell $cell) {
-		return $this->addCacheData($cell->getCoordinate(),$cell);
-	}	//	function updateCacheData()
-
-
-    /**
-     * Delete a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to delete
-     * @throws	PHPExcel_Exception
-     */
-	public function deleteCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID && !is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObjectID = $this->_currentObject = null;
-		}
-
-		if (is_object($this->_cellCache[$pCoord])) {
-			$this->_cellCache[$pCoord]->detach();
-			unset($this->_cellCache[$pCoord]);
-		}
-		$this->_currentCellIsDirty = false;
-	}	//	function deleteCacheData()
-
-
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return	string[]
-	 */
-	public function getCellList() {
-		return array_keys($this->_cellCache);
-	}	//	function getCellList()
-
-
-	/**
-	 * Sort the list of all cell addresses currently held in cache by row and column
-	 *
-	 * @return	string[]
-	 */
-	public function getSortedCellList() {
-		$sortKeys = array();
-		foreach ($this->getCellList() as $coord) {
-			sscanf($coord,'%[A-Z]%d', $column, $row);
-			$sortKeys[sprintf('%09d%3s',$row,$column)] = $coord;
-		}
-		ksort($sortKeys);
-
-		return array_values($sortKeys);
-	}	//	function sortCellList()
-
-
-
-	/**
-	 * Get highest worksheet column and highest row that have cell records
-	 *
-	 * @return array Highest column name and highest row number
-	 */
-	public function getHighestRowAndColumn()
-	{
-		// Lookup highest column and highest row
-		$col = array('A' => '1A');
-		$row = array(1);
-		foreach ($this->getCellList() as $coord) {
-			sscanf($coord,'%[A-Z]%d', $c, $r);
-			$row[$r] = $r;
-			$col[$c] = strlen($c).$c;
- 		}
-		if (!empty($row)) {
-			// Determine highest column and row
-			$highestRow = max($row);
-			$highestColumn = substr(max($col),1);
-		}
-
-		return array( 'row'	   => $highestRow,
-					  'column' => $highestColumn
-					);
-	}
-
-
-	/**
-	 * Return the cell address of the currently active cell object
-	 *
-	 * @return	string
-	 */
-	public function getCurrentAddress()
-	{
-		return $this->_currentObjectID;
-	}
-
-	/**
-	 * Return the column address of the currently active cell object
-	 *
-	 * @return	string
-	 */
-	public function getCurrentColumn()
-	{
-		sscanf($this->_currentObjectID, '%[A-Z]%d', $column, $row);
-		return $column;
-	}
-
-	/**
-	 * Return the row address of the currently active cell object
-	 *
-	 * @return	integer
-	 */
-	public function getCurrentRow()
-	{
-		sscanf($this->_currentObjectID, '%[A-Z]%d', $column, $row);
-		return (integer) $row;
-	}
-
-	/**
-	 * Get highest worksheet column
-	 *
-     * @param   string     $row        Return the highest column for the specified row,
-     *                                     or the highest column of any row if no row number is passed
-	 * @return  string     Highest column name
-	 */
-	public function getHighestColumn($row = null)
-	{
-        if ($row == null) {
-    		$colRow = $this->getHighestRowAndColumn();
-	    	return $colRow['column'];
-        }
-
-        $columnList = array(1);
-        foreach ($this->getCellList() as $coord) {
-            sscanf($coord,'%[A-Z]%d', $c, $r);
-            if ($r != $row) {
-                continue;
-            }
-            $columnList[] = PHPExcel_Cell::columnIndexFromString($c);
-        }
-        return PHPExcel_Cell::stringFromColumnIndex(max($columnList) - 1);
-    }
-
-	/**
-	 * Get highest worksheet row
-	 *
-     * @param   string     $column     Return the highest row for the specified column,
-     *                                     or the highest row of any column if no column letter is passed
-	 * @return  int        Highest row number
-	 */
-	public function getHighestRow($column = null)
-	{
-        if ($column == null) {
-	    	$colRow = $this->getHighestRowAndColumn();
-    		return $colRow['row'];
-        }
-
-        $rowList = array(0);
-        foreach ($this->getCellList() as $coord) {
-            sscanf($coord,'%[A-Z]%d', $c, $r);
-            if ($c != $column) {
-                continue;
-            }
-            $rowList[] = $r;
-        }
-
-        return max($rowList);
-	}
-
-
-	/**
-	 * Generate a unique ID for cache referencing
-	 *
-	 * @return string Unique Reference
-	 */
-	protected function _getUniqueID() {
-		if (function_exists('posix_getpid')) {
-			$baseUnique = posix_getpid();
-		} else {
-			$baseUnique = mt_rand();
-		}
-		return uniqid($baseUnique,true);
-	}
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		$this->_currentCellIsDirty;
-        $this->_storeData();
-
-		$this->_parent = $parent;
-		if (($this->_currentObject !== NULL) && (is_object($this->_currentObject))) {
-			$this->_currentObject->attach($this);
-		}
-	}	//	function copyCellCollection()
-
-    /**
-     * Remove a row, deleting all cells in that row
-     *
-     * @param string    $row    Row number to remove
-     * @return void
-     */
-    public function removeRow($row) {
-        foreach ($this->getCellList() as $coord) {
-            sscanf($coord,'%[A-Z]%d', $c, $r);
-            if ($r == $row) {
-                $this->deleteCacheData($coord);
-            }
-        }
-    }
-
-    /**
-     * Remove a column, deleting all cells in that column
-     *
-     * @param string    $column    Column ID to remove
-     * @return void
-     */
-    public function removeColumn($column) {
-        foreach ($this->getCellList() as $coord) {
-            sscanf($coord,'%[A-Z]%d', $c, $r);
-            if ($c == $column) {
-                $this->deleteCacheData($coord);
-            }
-        }
-    }
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable() {
-		return true;
-	}
-
-}
+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_CacheBase
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+abstract class PHPExcel_CachedObjectStorage_CacheBase
+{
+    /**
+     * Parent worksheet
+     *
+     * @var PHPExcel_Worksheet
+     */
+    protected $_parent;
+
+    /**
+     * The currently active Cell
+     *
+     * @var PHPExcel_Cell
+     */
+    protected $_currentObject = null;
+
+    /**
+     * Coordinate address of the currently active Cell
+     *
+     * @var string
+     */
+    protected $_currentObjectID = null;
+
+    /**
+     * Flag indicating whether the currently active Cell requires saving
+     *
+     * @var boolean
+     */
+    protected $_currentCellIsDirty = true;
+
+    /**
+     * An array of cells or cell pointers for the worksheet cells held in this cache,
+     *        and indexed by their coordinate address within the worksheet
+     *
+     * @var array of mixed
+     */
+    protected $_cellCache = array();
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The worksheet for this cell collection
+     */
+    public function __construct(PHPExcel_Worksheet $parent)
+    {
+        //    Set our parent worksheet.
+        //    This is maintained within the cache controller to facilitate re-attaching it to PHPExcel_Cell objects when
+        //        they are woken from a serialized state
+        $this->_parent = $parent;
+    }
+
+    /**
+     * Return the parent worksheet for this cell collection
+     *
+     * @return    PHPExcel_Worksheet
+     */
+    public function getParent()
+    {
+        return $this->_parent;
+    }
+
+    /**
+     * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+     *
+     * @param    string        $pCoord        Coordinate address of the cell to check
+     * @return    boolean
+     */
+    public function isDataSet($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID) {
+            return true;
+        }
+        //    Check if the requested entry exists in the cache
+        return isset($this->_cellCache[$pCoord]);
+    }
+
+    /**
+     * Move a cell object from one address to another
+     *
+     * @param    string        $fromAddress    Current address of the cell to move
+     * @param    string        $toAddress        Destination address of the cell to move
+     * @return    boolean
+     */
+    public function moveCell($fromAddress, $toAddress)
+    {
+        if ($fromAddress === $this->_currentObjectID) {
+            $this->_currentObjectID = $toAddress;
+        }
+        $this->_currentCellIsDirty = true;
+        if (isset($this->_cellCache[$fromAddress])) {
+            $this->_cellCache[$toAddress] = &$this->_cellCache[$fromAddress];
+            unset($this->_cellCache[$fromAddress]);
+        }
+
+        return true;
+    }
+
+    /**
+     * Add or Update a cell in cache
+     *
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function updateCacheData(PHPExcel_Cell $cell)
+    {
+        return $this->addCacheData($cell->getCoordinate(), $cell);
+    }
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to delete
+     * @throws    PHPExcel_Exception
+     */
+    public function deleteCacheData($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID && !is_null($this->_currentObject)) {
+            $this->_currentObject->detach();
+            $this->_currentObjectID = $this->_currentObject = null;
+        }
+
+        if (is_object($this->_cellCache[$pCoord])) {
+            $this->_cellCache[$pCoord]->detach();
+            unset($this->_cellCache[$pCoord]);
+        }
+        $this->_currentCellIsDirty = false;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return    string[]
+     */
+    public function getCellList()
+    {
+        return array_keys($this->_cellCache);
+    }
+
+    /**
+     * Sort the list of all cell addresses currently held in cache by row and column
+     *
+     * @return    string[]
+     */
+    public function getSortedCellList()
+    {
+        $sortKeys = array();
+        foreach ($this->getCellList() as $coord) {
+            sscanf($coord, '%[A-Z]%d', $column, $row);
+            $sortKeys[sprintf('%09d%3s', $row, $column)] = $coord;
+        }
+        ksort($sortKeys);
+
+        return array_values($sortKeys);
+    }
+
+    /**
+     * Get highest worksheet column and highest row that have cell records
+     *
+     * @return array Highest column name and highest row number
+     */
+    public function getHighestRowAndColumn()
+    {
+        // Lookup highest column and highest row
+        $col = array('A' => '1A');
+        $row = array(1);
+        foreach ($this->getCellList() as $coord) {
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            $row[$r] = $r;
+            $col[$c] = strlen($c).$c;
+        }
+        if (!empty($row)) {
+            // Determine highest column and row
+            $highestRow = max($row);
+            $highestColumn = substr(max($col), 1);
+        }
+
+        return array(
+            'row'    => $highestRow,
+            'column' => $highestColumn
+        );
+    }
+
+    /**
+     * Return the cell address of the currently active cell object
+     *
+     * @return    string
+     */
+    public function getCurrentAddress()
+    {
+        return $this->_currentObjectID;
+    }
+
+    /**
+     * Return the column address of the currently active cell object
+     *
+     * @return    string
+     */
+    public function getCurrentColumn()
+    {
+        sscanf($this->_currentObjectID, '%[A-Z]%d', $column, $row);
+        return $column;
+    }
+
+    /**
+     * Return the row address of the currently active cell object
+     *
+     * @return    integer
+     */
+    public function getCurrentRow()
+    {
+        sscanf($this->_currentObjectID, '%[A-Z]%d', $column, $row);
+        return (integer) $row;
+    }
+
+    /**
+     * Get highest worksheet column
+     *
+     * @param   string     $row        Return the highest column for the specified row,
+     *                                     or the highest column of any row if no row number is passed
+     * @return  string     Highest column name
+     */
+    public function getHighestColumn($row = null)
+    {
+        if ($row == null) {
+            $colRow = $this->getHighestRowAndColumn();
+            return $colRow['column'];
+        }
+
+        $columnList = array(1);
+        foreach ($this->getCellList() as $coord) {
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            if ($r != $row) {
+                continue;
+            }
+            $columnList[] = PHPExcel_Cell::columnIndexFromString($c);
+        }
+        return PHPExcel_Cell::stringFromColumnIndex(max($columnList) - 1);
+    }
+
+    /**
+     * Get highest worksheet row
+     *
+     * @param   string     $column     Return the highest row for the specified column,
+     *                                     or the highest row of any column if no column letter is passed
+     * @return  int        Highest row number
+     */
+    public function getHighestRow($column = null)
+    {
+        if ($column == null) {
+            $colRow = $this->getHighestRowAndColumn();
+            return $colRow['row'];
+        }
+
+        $rowList = array(0);
+        foreach ($this->getCellList() as $coord) {
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            if ($c != $column) {
+                continue;
+            }
+            $rowList[] = $r;
+        }
+
+        return max($rowList);
+    }
+
+    /**
+     * Generate a unique ID for cache referencing
+     *
+     * @return string Unique Reference
+     */
+    protected function _getUniqueID()
+    {
+        if (function_exists('posix_getpid')) {
+            $baseUnique = posix_getpid();
+        } else {
+            $baseUnique = mt_rand();
+        }
+        return uniqid($baseUnique, true);
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     * @return    void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        $this->_currentCellIsDirty;
+        $this->_storeData();
+
+        $this->_parent = $parent;
+        if (($this->_currentObject !== null) && (is_object($this->_currentObject))) {
+            $this->_currentObject->attach($this);
+        }
+    }    //    function copyCellCollection()
+
+    /**
+     * Remove a row, deleting all cells in that row
+     *
+     * @param string    $row    Row number to remove
+     * @return void
+     */
+    public function removeRow($row)
+    {
+        foreach ($this->getCellList() as $coord) {
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            if ($r == $row) {
+                $this->deleteCacheData($coord);
+            }
+        }
+    }
+
+    /**
+     * Remove a column, deleting all cells in that column
+     *
+     * @param string    $column    Column ID to remove
+     * @return void
+     */
+    public function removeColumn($column)
+    {
+        foreach ($this->getCellList() as $coord) {
+            sscanf($coord, '%[A-Z]%d', $c, $r);
+            if ($c == $column) {
+                $this->deleteCacheData($coord);
+            }
+        }
+    }
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return    boolean
+     */
+    public static function cacheMethodIsAvailable()
+    {
+        return true;
+    }
+}
diff --git a/Classes/PHPExcel/CachedObjectStorage/DiscISAM.php b/Classes/PHPExcel/CachedObjectStorage/DiscISAM.php
index 05b57ed2..65afa3cf 100644
--- a/Classes/PHPExcel/CachedObjectStorage/DiscISAM.php
+++ b/Classes/PHPExcel/CachedObjectStorage/DiscISAM.php
@@ -1,219 +1,208 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2015 PHPExcel
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    ##VERSION##, ##DATE##
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_DiscISAM
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_DiscISAM extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-	/**
-	 * Name of the file for this cache
-	 *
-	 * @var string
-	 */
-	private $_fileName = NULL;
-
-	/**
-	 * File handle for this cache file
-	 *
-	 * @var resource
-	 */
-	private $_fileHandle = NULL;
-
-	/**
-	 * Directory/Folder where the cache file is located
-	 *
-	 * @var string
-	 */
-	private $_cacheDirectory = NULL;
-
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	PHPExcel_Exception
-     */
-	protected function _storeData() {
-		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
-			$this->_currentObject->detach();
-
-			fseek($this->_fileHandle,0,SEEK_END);
-
-			$this->_cellCache[$this->_currentObjectID] = array(
-                'ptr' => ftell($this->_fileHandle),
-				'sz'  => fwrite($this->_fileHandle, serialize($this->_currentObject))
-			);
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	PHPExcel_Cell
-     * @throws	PHPExcel_Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	PHPExcel_Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		if (!isset($this->_cellCache[$pCoord])) {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		fseek($this->_fileHandle, $this->_cellCache[$pCoord]['ptr']);
-		$this->_currentObject = unserialize(fread($this->_fileHandle, $this->_cellCache[$pCoord]['sz']));
-        //    Re-attach this as the cell's parent
-        $this->_currentObject->attach($this);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return  string[]
-	 */
-	public function getCellList() {
-		if ($this->_currentObjectID !== null) {
-			$this->_storeData();
-		}
-
-		return parent::getCellList();
-	}
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		parent::copyCellCollection($parent);
-		//	Get a new id for the new file name
-		$baseUnique = $this->_getUniqueID();
-		$newFileName = $this->_cacheDirectory.'/PHPExcel.'.$baseUnique.'.cache';
-		//	Copy the existing cell cache file
-		copy ($this->_fileName,$newFileName);
-		$this->_fileName = $newFileName;
-		//	Open the copied cell cache file
-		$this->_fileHandle = fopen($this->_fileName,'a+');
-	}	//	function copyCellCollection()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-
-		//	Close down the temporary cache file
-		$this->__destruct();
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 * @param	array of mixed		$arguments	Additional initialisation arguments
-	 */
-	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
-		$this->_cacheDirectory	= ((isset($arguments['dir'])) && ($arguments['dir'] !== NULL))
-									? $arguments['dir']
-									: PHPExcel_Shared_File::sys_get_temp_dir();
-
-		parent::__construct($parent);
-		if (is_null($this->_fileHandle)) {
-			$baseUnique = $this->_getUniqueID();
-			$this->_fileName = $this->_cacheDirectory.'/PHPExcel.'.$baseUnique.'.cache';
-			$this->_fileHandle = fopen($this->_fileName,'a+');
-		}
-	}	//	function __construct()
-
-
-	/**
-	 * Destroy this cell collection
-	 */
-	public function __destruct() {
-		if (!is_null($this->_fileHandle)) {
-			fclose($this->_fileHandle);
-			unlink($this->_fileName);
-		}
-		$this->_fileHandle = null;
-	}	//	function __destruct()
-
-}
+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_DiscISAM
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_DiscISAM extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Name of the file for this cache
+     *
+     * @var string
+     */
+    private $_fileName = null;
+
+    /**
+     * File handle for this cache file
+     *
+     * @var resource
+     */
+    private $_fileHandle = null;
+
+    /**
+     * Directory/Folder where the cache file is located
+     *
+     * @var string
+     */
+    private $_cacheDirectory = null;
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function _storeData()
+    {
+        if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+            $this->_currentObject->detach();
+
+            fseek($this->_fileHandle, 0, SEEK_END);
+
+            $this->_cellCache[$this->_currentObjectID] = array(
+                'ptr' => ftell($this->_fileHandle),
+                'sz'  => fwrite($this->_fileHandle, serialize($this->_currentObject))
+            );
+            $this->_currentCellIsDirty = false;
+        }
+        $this->_currentObjectID = $this->_currentObject = null;
+    }
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+            $this->_storeData();
+        }
+
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = $cell;
+        $this->_currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID) {
+            return $this->_currentObject;
+        }
+        $this->_storeData();
+
+        //    Check if the entry that has been requested actually exists
+        if (!isset($this->_cellCache[$pCoord])) {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->_currentObjectID = $pCoord;
+        fseek($this->_fileHandle, $this->_cellCache[$pCoord]['ptr']);
+        $this->_currentObject = unserialize(fread($this->_fileHandle, $this->_cellCache[$pCoord]['sz']));
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->_currentObject;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->_currentObjectID !== null) {
+            $this->_storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        parent::copyCellCollection($parent);
+        //    Get a new id for the new file name
+        $baseUnique = $this->_getUniqueID();
+        $newFileName = $this->_cacheDirectory.'/PHPExcel.'.$baseUnique.'.cache';
+        //    Copy the existing cell cache file
+        copy($this->_fileName, $newFileName);
+        $this->_fileName = $newFileName;
+        //    Open the copied cell cache file
+        $this->_fileHandle = fopen($this->_fileName, 'a+');
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->_currentObject)) {
+            $this->_currentObject->detach();
+            $this->_currentObject = $this->_currentObjectID = null;
+        }
+        $this->_cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->_parent = null;
+
+        //    Close down the temporary cache file
+        $this->__destruct();
+    }
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The worksheet for this cell collection
+     * @param    array of mixed        $arguments    Additional initialisation arguments
+     */
+    public function __construct(PHPExcel_Worksheet $parent, $arguments)
+    {
+        $this->_cacheDirectory    = ((isset($arguments['dir'])) && ($arguments['dir'] !== null))
+                                    ? $arguments['dir']
+                                    : PHPExcel_Shared_File::sys_get_temp_dir();
+
+        parent::__construct($parent);
+        if (is_null($this->_fileHandle)) {
+            $baseUnique = $this->_getUniqueID();
+            $this->_fileName = $this->_cacheDirectory.'/PHPExcel.'.$baseUnique.'.cache';
+            $this->_fileHandle = fopen($this->_fileName, 'a+');
+        }
+    }
+
+    /**
+     * Destroy this cell collection
+     */
+    public function __destruct()
+    {
+        if (!is_null($this->_fileHandle)) {
+            fclose($this->_fileHandle);
+            unlink($this->_fileName);
+        }
+        $this->_fileHandle = null;
+    }
+}
diff --git a/Classes/PHPExcel/CachedObjectStorage/ICache.php b/Classes/PHPExcel/CachedObjectStorage/ICache.php
index 97ea223a..aafef6e9 100644
--- a/Classes/PHPExcel/CachedObjectStorage/ICache.php
+++ b/Classes/PHPExcel/CachedObjectStorage/ICache.php
@@ -1,6 +1,7 @@
 <?php
+
 /**
- * PHPExcel
+ * PHPExcel_CachedObjectStorage_ICache
  *
  * Copyright (c) 2006 - 2015 PHPExcel
  *
@@ -21,92 +22,82 @@
  * @category   PHPExcel
  * @package    PHPExcel_CachedObjectStorage
  * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
  * @version    ##VERSION##, ##DATE##
  */
-
-
-/**
- * PHPExcel_CachedObjectStorage_ICache
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
 interface PHPExcel_CachedObjectStorage_ICache
 {
     /**
      * Add or Update a cell in cache identified by coordinate address
      *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	PHPExcel_Cell
-     * @throws	PHPExcel_Exception
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
      */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell);
+    public function addCacheData($pCoord, PHPExcel_Cell $cell);
 
     /**
      * Add or Update a cell in cache
      *
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	PHPExcel_Cell
-     * @throws	PHPExcel_Exception
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
      */
-	public function updateCacheData(PHPExcel_Cell $cell);
+    public function updateCacheData(PHPExcel_Cell $cell);
 
     /**
      * Fetch a cell from cache identified by coordinate address
      *
-     * @param	string			$pCoord		Coordinate address of the cell to retrieve
-     * @return PHPExcel_Cell 	Cell that was found, or null if not found
-     * @throws	PHPExcel_Exception
+     * @param    string            $pCoord        Coordinate address of the cell to retrieve
+     * @return PHPExcel_Cell     Cell that was found, or null if not found
+     * @throws    PHPExcel_Exception
      */
-	public function getCacheData($pCoord);
+    public function getCacheData($pCoord);
 
     /**
      * Delete a cell in cache identified by coordinate address
      *
-     * @param	string			$pCoord		Coordinate address of the cell to delete
-     * @throws	PHPExcel_Exception
+     * @param    string            $pCoord        Coordinate address of the cell to delete
+     * @throws    PHPExcel_Exception
      */
-	public function deleteCacheData($pCoord);
+    public function deleteCacheData($pCoord);
 
-	/**
-	 * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
-	 *
-	 * @param	string		$pCoord		Coordinate address of the cell to check
-	 * @return	boolean
-	 */
-	public function isDataSet($pCoord);
+    /**
+     * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+     *
+     * @param    string        $pCoord        Coordinate address of the cell to check
+     * @return    boolean
+     */
+    public function isDataSet($pCoord);
 
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return	string[]
-	 */
-	public function getCellList();
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return    string[]
+     */
+    public function getCellList();
 
-	/**
-	 * Get the list of all cell addresses currently held in cache sorted by column and row
-	 *
-	 * @return	string[]
-	 */
-	public function getSortedCellList();
+    /**
+     * Get the list of all cell addresses currently held in cache sorted by column and row
+     *
+     * @return    string[]
+     */
+    public function getSortedCellList();
 
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent);
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable();
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     * @return    void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent);
 
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return    boolean
+     */
+    public static function cacheMethodIsAvailable();
 }
diff --git a/Classes/PHPExcel/CachedObjectStorage/Igbinary.php b/Classes/PHPExcel/CachedObjectStorage/Igbinary.php
index 76d4566d..e49f3fca 100644
--- a/Classes/PHPExcel/CachedObjectStorage/Igbinary.php
+++ b/Classes/PHPExcel/CachedObjectStorage/Igbinary.php
@@ -1,152 +1,149 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2015 PHPExcel
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    ##VERSION##, ##DATE##
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_Igbinary
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_Igbinary extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	PHPExcel_Exception
-     */
-	protected function _storeData() {
-		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
-			$this->_currentObject->detach();
-
-			$this->_cellCache[$this->_currentObjectID] = igbinary_serialize($this->_currentObject);
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	PHPExcel_Cell
-     * @throws	PHPExcel_Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	PHPExcel_Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		if (!isset($this->_cellCache[$pCoord])) {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = igbinary_unserialize($this->_cellCache[$pCoord]);
-        //    Re-attach this as the cell's parent
-        $this->_currentObject->attach($this);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return  string[]
-	 */
-	public function getCellList() {
-		if ($this->_currentObjectID !== null) {
-			$this->_storeData();
-		}
-
-		return parent::getCellList();
-	}
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable() {
-		if (!function_exists('igbinary_serialize')) {
-			return false;
-		}
-
-		return true;
-	}
-
-}
+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_Igbinary
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_Igbinary extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function _storeData()
+    {
+        if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+            $this->_currentObject->detach();
+
+            $this->_cellCache[$this->_currentObjectID] = igbinary_serialize($this->_currentObject);
+            $this->_currentCellIsDirty = false;
+        }
+        $this->_currentObjectID = $this->_currentObject = null;
+    }    //    function _storeData()
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+            $this->_storeData();
+        }
+
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = $cell;
+        $this->_currentCellIsDirty = true;
+
+        return $cell;
+    }    //    function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID) {
+            return $this->_currentObject;
+        }
+        $this->_storeData();
+
+        //    Check if the entry that has been requested actually exists
+        if (!isset($this->_cellCache[$pCoord])) {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = igbinary_unserialize($this->_cellCache[$pCoord]);
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->_currentObject;
+    }    //    function getCacheData()
+
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->_currentObjectID !== null) {
+            $this->_storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->_currentObject)) {
+            $this->_currentObject->detach();
+            $this->_currentObject = $this->_currentObjectID = null;
+        }
+        $this->_cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->_parent = null;
+    }    //    function unsetWorksheetCells()
+
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return    boolean
+     */
+    public static function cacheMethodIsAvailable()
+    {
+        if (!function_exists('igbinary_serialize')) {
+            return false;
+        }
+
+        return true;
+    }
+}
diff --git a/Classes/PHPExcel/CachedObjectStorage/Memcache.php b/Classes/PHPExcel/CachedObjectStorage/Memcache.php
index 7e3659d7..1ffcf47a 100644
--- a/Classes/PHPExcel/CachedObjectStorage/Memcache.php
+++ b/Classes/PHPExcel/CachedObjectStorage/Memcache.php
@@ -1,312 +1,308 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2015 PHPExcel
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    ##VERSION##, ##DATE##
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_Memcache
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_Memcache extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-	/**
-	 * Prefix used to uniquely identify cache data for this worksheet
-	 *
-	 * @var string
-	 */
-	private $_cachePrefix = null;
-
-	/**
-	 * Cache timeout
-	 *
-	 * @var integer
-	 */
-	private $_cacheTime = 600;
-
-	/**
-	 * Memcache interface
-	 *
-	 * @var resource
-	 */
-	private $_memcache = null;
-
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	PHPExcel_Exception
-     */
-	protected function _storeData() {
-		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
-			$this->_currentObject->detach();
-
-			$obj = serialize($this->_currentObject);
-			if (!$this->_memcache->replace($this->_cachePrefix.$this->_currentObjectID.'.cache',$obj,NULL,$this->_cacheTime)) {
-				if (!$this->_memcache->add($this->_cachePrefix.$this->_currentObjectID.'.cache',$obj,NULL,$this->_cacheTime)) {
-					$this->__destruct();
-					throw new PHPExcel_Exception('Failed to store cell '.$this->_currentObjectID.' in MemCache');
-				}
-			}
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	PHPExcel_Cell
-     * @throws	PHPExcel_Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-		$this->_cellCache[$pCoord] = true;
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-	/**
-	 * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
-	 *
-	 * @param	string		$pCoord		Coordinate address of the cell to check
-	 * @return	boolean
-	 * @return	boolean
-	 */
-	public function isDataSet($pCoord) {
-		//	Check if the requested entry is the current object, or exists in the cache
-		if (parent::isDataSet($pCoord)) {
-			if ($this->_currentObjectID == $pCoord) {
-				return true;
-			}
-			//	Check if the requested entry still exists in Memcache
-			$success = $this->_memcache->get($this->_cachePrefix.$pCoord.'.cache');
-			if ($success === false) {
-				//	Entry no longer exists in Memcache, so clear it from the cache array
-				parent::deleteCacheData($pCoord);
-				throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in MemCache');
-			}
-			return true;
-		}
-		return false;
-	}	//	function isDataSet()
-
-
-	/**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	PHPExcel_Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		if (parent::isDataSet($pCoord)) {
-			$obj = $this->_memcache->get($this->_cachePrefix.$pCoord.'.cache');
-			if ($obj === false) {
-				//	Entry no longer exists in Memcache, so clear it from the cache array
-				parent::deleteCacheData($pCoord);
-				throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in MemCache');
-			}
-		} else {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = unserialize($obj);
-        //    Re-attach this as the cell's parent
-        $this->_currentObject->attach($this);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return  string[]
-	 */
-	public function getCellList() {
-		if ($this->_currentObjectID !== null) {
-			$this->_storeData();
-		}
-
-		return parent::getCellList();
-	}
-
-
-    /**
-     * Delete a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to delete
-     * @throws	PHPExcel_Exception
-     */
-	public function deleteCacheData($pCoord) {
-		//	Delete the entry from Memcache
-		$this->_memcache->delete($this->_cachePrefix.$pCoord.'.cache');
-
-		//	Delete the entry from our cell address array
-		parent::deleteCacheData($pCoord);
-	}	//	function deleteCacheData()
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		parent::copyCellCollection($parent);
-		//	Get a new id for the new file name
-		$baseUnique = $this->_getUniqueID();
-		$newCachePrefix = substr(md5($baseUnique),0,8).'.';
-		$cacheList = $this->getCellList();
-		foreach($cacheList as $cellID) {
-			if ($cellID != $this->_currentObjectID) {
-				$obj = $this->_memcache->get($this->_cachePrefix.$cellID.'.cache');
-				if ($obj === false) {
-					//	Entry no longer exists in Memcache, so clear it from the cache array
-					parent::deleteCacheData($cellID);
-					throw new PHPExcel_Exception('Cell entry '.$cellID.' no longer exists in MemCache');
-				}
-				if (!$this->_memcache->add($newCachePrefix.$cellID.'.cache',$obj,NULL,$this->_cacheTime)) {
-					$this->__destruct();
-					throw new PHPExcel_Exception('Failed to store cell '.$cellID.' in MemCache');
-				}
-			}
-		}
-		$this->_cachePrefix = $newCachePrefix;
-	}	//	function copyCellCollection()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-
-		//	Flush the Memcache cache
-		$this->__destruct();
-
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 * @param	array of mixed		$arguments	Additional initialisation arguments
-	 */
-	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
-		$memcacheServer	= (isset($arguments['memcacheServer']))	? $arguments['memcacheServer']	: 'localhost';
-		$memcachePort	= (isset($arguments['memcachePort']))	? $arguments['memcachePort']	: 11211;
-		$cacheTime		= (isset($arguments['cacheTime']))		? $arguments['cacheTime']		: 600;
-
-		if (is_null($this->_cachePrefix)) {
-			$baseUnique = $this->_getUniqueID();
-			$this->_cachePrefix = substr(md5($baseUnique),0,8).'.';
-
-			//	Set a new Memcache object and connect to the Memcache server
-			$this->_memcache = new Memcache();
-			if (!$this->_memcache->addServer($memcacheServer, $memcachePort, false, 50, 5, 5, true, array($this, 'failureCallback'))) {
-				throw new PHPExcel_Exception('Could not connect to MemCache server at '.$memcacheServer.':'.$memcachePort);
-			}
-			$this->_cacheTime = $cacheTime;
-
-			parent::__construct($parent);
-		}
-	}	//	function __construct()
-
-
-	/**
-	 * Memcache error handler
-	 *
-	 * @param	string	$host		Memcache server
-	 * @param	integer	$port		Memcache port
-     * @throws	PHPExcel_Exception
-	 */
-	public function failureCallback($host, $port) {
-		throw new PHPExcel_Exception('memcache '.$host.':'.$port.' failed');
-	}
-
-
-	/**
-	 * Destroy this cell collection
-	 */
-	public function __destruct() {
-		$cacheList = $this->getCellList();
-		foreach($cacheList as $cellID) {
-			$this->_memcache->delete($this->_cachePrefix.$cellID.'.cache');
-		}
-	}	//	function __destruct()
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable() {
-		if (!function_exists('memcache_add')) {
-			return false;
-		}
-
-		return true;
-	}
-
-}
+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_Memcache
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_Memcache extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Prefix used to uniquely identify cache data for this worksheet
+     *
+     * @var string
+     */
+    private $_cachePrefix = null;
+
+    /**
+     * Cache timeout
+     *
+     * @var integer
+     */
+    private $_cacheTime = 600;
+
+    /**
+     * Memcache interface
+     *
+     * @var resource
+     */
+    private $_memcache = null;
+
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function _storeData()
+    {
+        if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+            $this->_currentObject->detach();
+
+            $obj = serialize($this->_currentObject);
+            if (!$this->_memcache->replace($this->_cachePrefix . $this->_currentObjectID . '.cache', $obj, null, $this->_cacheTime)) {
+                if (!$this->_memcache->add($this->_cachePrefix . $this->_currentObjectID . '.cache', $obj, null, $this->_cacheTime)) {
+                    $this->__destruct();
+                    throw new PHPExcel_Exception("Failed to store cell {$this->_currentObjectID} in MemCache");
+                }
+            }
+            $this->_currentCellIsDirty = false;
+        }
+        $this->_currentObjectID = $this->_currentObject = null;
+    }    //    function _storeData()
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+            $this->_storeData();
+        }
+        $this->_cellCache[$pCoord] = true;
+
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = $cell;
+        $this->_currentCellIsDirty = true;
+
+        return $cell;
+    }    //    function addCacheData()
+
+
+    /**
+     * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+     *
+     * @param    string        $pCoord        Coordinate address of the cell to check
+     * @return    boolean
+     * @return    boolean
+     */
+    public function isDataSet($pCoord)
+    {
+        //    Check if the requested entry is the current object, or exists in the cache
+        if (parent::isDataSet($pCoord)) {
+            if ($this->_currentObjectID == $pCoord) {
+                return true;
+            }
+            //    Check if the requested entry still exists in Memcache
+            $success = $this->_memcache->get($this->_cachePrefix.$pCoord.'.cache');
+            if ($success === false) {
+                //    Entry no longer exists in Memcache, so clear it from the cache array
+                parent::deleteCacheData($pCoord);
+                throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in MemCache');
+            }
+            return true;
+        }
+        return false;
+    }
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID) {
+            return $this->_currentObject;
+        }
+        $this->_storeData();
+
+        //    Check if the entry that has been requested actually exists
+        if (parent::isDataSet($pCoord)) {
+            $obj = $this->_memcache->get($this->_cachePrefix . $pCoord . '.cache');
+            if ($obj === false) {
+                //    Entry no longer exists in Memcache, so clear it from the cache array
+                parent::deleteCacheData($pCoord);
+                throw new PHPExcel_Exception("Cell entry {$pCoord} no longer exists in MemCache");
+            }
+        } else {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = unserialize($obj);
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->_currentObject;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->_currentObjectID !== null) {
+            $this->_storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to delete
+     * @throws    PHPExcel_Exception
+     */
+    public function deleteCacheData($pCoord)
+    {
+        //    Delete the entry from Memcache
+        $this->_memcache->delete($this->_cachePrefix . $pCoord . '.cache');
+
+        //    Delete the entry from our cell address array
+        parent::deleteCacheData($pCoord);
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     * @return    void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        parent::copyCellCollection($parent);
+        //    Get a new id for the new file name
+        $baseUnique = $this->_getUniqueID();
+        $newCachePrefix = substr(md5($baseUnique), 0, 8) . '.';
+        $cacheList = $this->getCellList();
+        foreach ($cacheList as $cellID) {
+            if ($cellID != $this->_currentObjectID) {
+                $obj = $this->_memcache->get($this->_cachePrefix.$cellID.'.cache');
+                if ($obj === false) {
+                    //    Entry no longer exists in Memcache, so clear it from the cache array
+                    parent::deleteCacheData($cellID);
+                    throw new PHPExcel_Exception("Cell entry {$cellID} no longer exists in MemCache");
+                }
+                if (!$this->_memcache->add($newCachePrefix . $cellID . '.cache', $obj, null, $this->_cacheTime)) {
+                    $this->__destruct();
+                    throw new PHPExcel_Exception("Failed to store cell {$cellID} in MemCache");
+                }
+            }
+        }
+        $this->_cachePrefix = $newCachePrefix;
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->_currentObject)) {
+            $this->_currentObject->detach();
+            $this->_currentObject = $this->_currentObjectID = null;
+        }
+
+        //    Flush the Memcache cache
+        $this->__destruct();
+
+        $this->_cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->_parent = null;
+    }
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The worksheet for this cell collection
+     * @param    array of mixed        $arguments    Additional initialisation arguments
+     */
+    public function __construct(PHPExcel_Worksheet $parent, $arguments)
+    {
+        $memcacheServer = (isset($arguments['memcacheServer'])) ? $arguments['memcacheServer'] : 'localhost';
+        $memcachePort = (isset($arguments['memcachePort'])) ? $arguments['memcachePort'] : 11211;
+        $cacheTime = (isset($arguments['cacheTime'])) ? $arguments['cacheTime'] : 600;
+
+        if (is_null($this->_cachePrefix)) {
+            $baseUnique = $this->_getUniqueID();
+            $this->_cachePrefix = substr(md5($baseUnique), 0, 8) . '.';
+
+            //    Set a new Memcache object and connect to the Memcache server
+            $this->_memcache = new Memcache();
+            if (!$this->_memcache->addServer($memcacheServer, $memcachePort, false, 50, 5, 5, true, array($this, 'failureCallback'))) {
+                throw new PHPExcel_Exception("Could not connect to MemCache server at {$memcacheServer}:{$memcachePort}";
+            }
+            $this->_cacheTime = $cacheTime;
+
+            parent::__construct($parent);
+        }
+    }
+
+    /**
+     * Memcache error handler
+     *
+     * @param    string    $host        Memcache server
+     * @param    integer    $port        Memcache port
+     * @throws    PHPExcel_Exception
+     */
+    public function failureCallback($host, $port)
+    {
+        throw new PHPExcel_Exception("memcache {$host}:{$port} failed");
+    }
+
+    /**
+     * Destroy this cell collection
+     */
+    public function __destruct()
+    {
+        $cacheList = $this->getCellList();
+        foreach ($cacheList as $cellID) {
+            $this->_memcache->delete($this->_cachePrefix.$cellID . '.cache');
+        }
+    }
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return    boolean
+     */
+    public static function cacheMethodIsAvailable()
+    {
+        if (!function_exists('memcache_add')) {
+            return false;
+        }
+
+        return true;
+    }
+}
diff --git a/Classes/PHPExcel/CachedObjectStorage/Memory.php b/Classes/PHPExcel/CachedObjectStorage/Memory.php
index e1132147..aa3e1bb3 100644
--- a/Classes/PHPExcel/CachedObjectStorage/Memory.php
+++ b/Classes/PHPExcel/CachedObjectStorage/Memory.php
@@ -1,125 +1,118 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2015 PHPExcel
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    ##VERSION##, ##DATE##
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_Memory
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_Memory extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-    /**
-     * Dummy method callable from CacheBase, but unused by Memory cache
-     *
-	 * @return	void
-     */
-	protected function _storeData() {
-	}	//	function _storeData()
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	PHPExcel_Cell
-     * @throws	PHPExcel_Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		$this->_cellCache[$pCoord] = $cell;
-
-		//	Set current entry to the new/updated entry
-		$this->_currentObjectID = $pCoord;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	PHPExcel_Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		//	Check if the entry that has been requested actually exists
-		if (!isset($this->_cellCache[$pCoord])) {
-			$this->_currentObjectID = NULL;
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-
-		//	Return requested entry
-		return $this->_cellCache[$pCoord];
-	}	//	function getCacheData()
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		parent::copyCellCollection($parent);
-
-		$newCollection = array();
-		foreach($this->_cellCache as $k => &$cell) {
-			$newCollection[$k] = clone $cell;
-			$newCollection[$k]->attach($this);
-		}
-
-		$this->_cellCache = $newCollection;
-	}
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		//	Because cells are all stored as intact objects in memory, we need to detach each one from the parent
-		foreach($this->_cellCache as $k => &$cell) {
-			$cell->detach();
-			$this->_cellCache[$k] = null;
-		}
-		unset($cell);
-
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-	}	//	function unsetWorksheetCells()
-
-}
+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_Memory
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_Memory extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Dummy method callable from CacheBase, but unused by Memory cache
+     *
+     * @return    void
+     */
+    protected function _storeData()
+    {
+    }
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        $this->_cellCache[$pCoord] = $cell;
+
+        //    Set current entry to the new/updated entry
+        $this->_currentObjectID = $pCoord;
+
+        return $cell;
+    }
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        //    Check if the entry that has been requested actually exists
+        if (!isset($this->_cellCache[$pCoord])) {
+            $this->_currentObjectID = null;
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->_currentObjectID = $pCoord;
+
+        //    Return requested entry
+        return $this->_cellCache[$pCoord];
+    }
+
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        parent::copyCellCollection($parent);
+
+        $newCollection = array();
+        foreach ($this->_cellCache as $k => &$cell) {
+            $newCollection[$k] = clone $cell;
+            $newCollection[$k]->attach($this);
+        }
+
+        $this->_cellCache = $newCollection;
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     */
+    public function unsetWorksheetCells()
+    {
+        // Because cells are all stored as intact objects in memory, we need to detach each one from the parent
+        foreach ($this->_cellCache as $k => &$cell) {
+            $cell->detach();
+            $this->_cellCache[$k] = null;
+        }
+        unset($cell);
+
+        $this->_cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->_parent = null;
+    }
+}
diff --git a/Classes/PHPExcel/CachedObjectStorage/MemoryGZip.php b/Classes/PHPExcel/CachedObjectStorage/MemoryGZip.php
index 3c1b7564..16f01051 100644
--- a/Classes/PHPExcel/CachedObjectStorage/MemoryGZip.php
+++ b/Classes/PHPExcel/CachedObjectStorage/MemoryGZip.php
@@ -1,137 +1,133 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2015 PHPExcel
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    ##VERSION##, ##DATE##
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_MemoryGZip
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_MemoryGZip extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	PHPExcel_Exception
-     */
-	protected function _storeData() {
-		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
-			$this->_currentObject->detach();
-
-			$this->_cellCache[$this->_currentObjectID] = gzdeflate(serialize($this->_currentObject));
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	PHPExcel_Cell
-     * @throws	PHPExcel_Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	PHPExcel_Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		if (!isset($this->_cellCache[$pCoord])) {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = unserialize(gzinflate($this->_cellCache[$pCoord]));
-        //    Re-attach this as the cell's parent
-        $this->_currentObject->attach($this);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return  string[]
-	 */
-	public function getCellList() {
-		if ($this->_currentObjectID !== null) {
-			$this->_storeData();
-		}
-
-		return parent::getCellList();
-	}
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-	}	//	function unsetWorksheetCells()
-
-}
+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_MemoryGZip
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_MemoryGZip extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function _storeData()
+    {
+        if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+            $this->_currentObject->detach();
+
+            $this->_cellCache[$this->_currentObjectID] = gzdeflate(serialize($this->_currentObject));
+            $this->_currentCellIsDirty = false;
+        }
+        $this->_currentObjectID = $this->_currentObject = null;
+    }
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+            $this->_storeData();
+        }
+
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = $cell;
+        $this->_currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID) {
+            return $this->_currentObject;
+        }
+        $this->_storeData();
+
+        //    Check if the entry that has been requested actually exists
+        if (!isset($this->_cellCache[$pCoord])) {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = unserialize(gzinflate($this->_cellCache[$pCoord]));
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->_currentObject;
+    }
+
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->_currentObjectID !== null) {
+            $this->_storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->_currentObject)) {
+            $this->_currentObject->detach();
+            $this->_currentObject = $this->_currentObjectID = null;
+        }
+        $this->_cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->_parent = null;
+    }
+}
diff --git a/Classes/PHPExcel/CachedObjectStorage/MemorySerialized.php b/Classes/PHPExcel/CachedObjectStorage/MemorySerialized.php
index aad8db87..285d0d8f 100644
--- a/Classes/PHPExcel/CachedObjectStorage/MemorySerialized.php
+++ b/Classes/PHPExcel/CachedObjectStorage/MemorySerialized.php
@@ -1,137 +1,129 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2015 PHPExcel
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    ##VERSION##, ##DATE##
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_MemorySerialized
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_MemorySerialized extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	PHPExcel_Exception
-     */
-	protected function _storeData() {
-		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
-			$this->_currentObject->detach();
-
-			$this->_cellCache[$this->_currentObjectID] = serialize($this->_currentObject);
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	PHPExcel_Cell
-     * @throws	PHPExcel_Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	PHPExcel_Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		if (!isset($this->_cellCache[$pCoord])) {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = unserialize($this->_cellCache[$pCoord]);
-        //    Re-attach this as the cell's parent
-        $this->_currentObject->attach($this);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return  string[]
-	 */
-	public function getCellList() {
-		if ($this->_currentObjectID !== null) {
-			$this->_storeData();
-		}
-
-		return parent::getCellList();
-	}
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-	}	//	function unsetWorksheetCells()
-
-}
+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_MemorySerialized
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_MemorySerialized extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function _storeData()
+    {
+        if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+            $this->_currentObject->detach();
+
+            $this->_cellCache[$this->_currentObjectID] = serialize($this->_currentObject);
+            $this->_currentCellIsDirty = false;
+        }
+        $this->_currentObjectID = $this->_currentObject = null;
+    }
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+            $this->_storeData();
+        }
+
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = $cell;
+        $this->_currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID) {
+            return $this->_currentObject;
+        }
+        $this->_storeData();
+
+        //    Check if the entry that has been requested actually exists
+        if (!isset($this->_cellCache[$pCoord])) {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = unserialize($this->_cellCache[$pCoord]);
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->_currentObject;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->_currentObjectID !== null) {
+            $this->_storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->_currentObject)) {
+            $this->_currentObject->detach();
+            $this->_currentObject = $this->_currentObjectID = null;
+        }
+        $this->_cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->_parent = null;
+    }
+}
diff --git a/Classes/PHPExcel/CachedObjectStorage/PHPTemp.php b/Classes/PHPExcel/CachedObjectStorage/PHPTemp.php
index 04d30999..6176bf1e 100644
--- a/Classes/PHPExcel/CachedObjectStorage/PHPTemp.php
+++ b/Classes/PHPExcel/CachedObjectStorage/PHPTemp.php
@@ -1,206 +1,200 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2015 PHPExcel
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    ##VERSION##, ##DATE##
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_PHPTemp
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_PHPTemp extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-	/**
-	 * Name of the file for this cache
-	 *
-	 * @var string
-	 */
-	private $_fileHandle = null;
-
-	/**
-	 * Memory limit to use before reverting to file cache
-	 *
-	 * @var integer
-	 */
-	private $_memoryCacheSize = null;
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	PHPExcel_Exception
-     */
-	protected function _storeData() {
-		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
-			$this->_currentObject->detach();
-
-			fseek($this->_fileHandle,0,SEEK_END);
-
-			$this->_cellCache[$this->_currentObjectID] = array(
-                'ptr' => ftell($this->_fileHandle),
-				'sz'  => fwrite($this->_fileHandle, serialize($this->_currentObject))
-			);
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	PHPExcel_Cell
-     * @throws	PHPExcel_Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	PHPExcel_Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		if (!isset($this->_cellCache[$pCoord])) {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		fseek($this->_fileHandle,$this->_cellCache[$pCoord]['ptr']);
-		$this->_currentObject = unserialize(fread($this->_fileHandle,$this->_cellCache[$pCoord]['sz']));
-        //    Re-attach this as the cell's parent
-        $this->_currentObject->attach($this);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return  string[]
-	 */
-	public function getCellList() {
-		if ($this->_currentObjectID !== null) {
-			$this->_storeData();
-		}
-
-		return parent::getCellList();
-	}
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		parent::copyCellCollection($parent);
-		//	Open a new stream for the cell cache data
-		$newFileHandle = fopen('php://temp/maxmemory:'.$this->_memoryCacheSize,'a+');
-		//	Copy the existing cell cache data to the new stream
-		fseek($this->_fileHandle,0);
-		while (!feof($this->_fileHandle)) {
-			fwrite($newFileHandle,fread($this->_fileHandle, 1024));
-		}
-		$this->_fileHandle = $newFileHandle;
-	}	//	function copyCellCollection()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-
-		//	Close down the php://temp file
-		$this->__destruct();
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 * @param	array of mixed		$arguments	Additional initialisation arguments
-	 */
-	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
-		$this->_memoryCacheSize	= (isset($arguments['memoryCacheSize']))	? $arguments['memoryCacheSize']	: '1MB';
-
-		parent::__construct($parent);
-		if (is_null($this->_fileHandle)) {
-			$this->_fileHandle = fopen('php://temp/maxmemory:'.$this->_memoryCacheSize,'a+');
-		}
-	}	//	function __construct()
-
-
-	/**
-	 * Destroy this cell collection
-	 */
-	public function __destruct() {
-		if (!is_null($this->_fileHandle)) {
-			fclose($this->_fileHandle);
-		}
-		$this->_fileHandle = null;
-	}	//	function __destruct()
-
-}
+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_PHPTemp
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_PHPTemp extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Name of the file for this cache
+     *
+     * @var string
+     */
+    private $_fileHandle = null;
+
+    /**
+     * Memory limit to use before reverting to file cache
+     *
+     * @var integer
+     */
+    private $_memoryCacheSize = null;
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function _storeData()
+    {
+        if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+            $this->_currentObject->detach();
+
+            fseek($this->_fileHandle, 0, SEEK_END);
+
+            $this->_cellCache[$this->_currentObjectID] = array(
+                'ptr' => ftell($this->_fileHandle),
+                'sz'  => fwrite($this->_fileHandle, serialize($this->_currentObject))
+            );
+            $this->_currentCellIsDirty = false;
+        }
+        $this->_currentObjectID = $this->_currentObject = null;
+    }
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+            $this->_storeData();
+        }
+
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = $cell;
+        $this->_currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID) {
+            return $this->_currentObject;
+        }
+        $this->_storeData();
+
+        //    Check if the entry that has been requested actually exists
+        if (!isset($this->_cellCache[$pCoord])) {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->_currentObjectID = $pCoord;
+        fseek($this->_fileHandle, $this->_cellCache[$pCoord]['ptr']);
+        $this->_currentObject = unserialize(fread($this->_fileHandle, $this->_cellCache[$pCoord]['sz']));
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->_currentObject;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->_currentObjectID !== null) {
+            $this->_storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     * @return    void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        parent::copyCellCollection($parent);
+        //    Open a new stream for the cell cache data
+        $newFileHandle = fopen('php://temp/maxmemory:' . $this->_memoryCacheSize, 'a+');
+        //    Copy the existing cell cache data to the new stream
+        fseek($this->_fileHandle, 0);
+        while (!feof($this->_fileHandle)) {
+            fwrite($newFileHandle, fread($this->_fileHandle, 1024));
+        }
+        $this->_fileHandle = $newFileHandle;
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->_currentObject)) {
+            $this->_currentObject->detach();
+            $this->_currentObject = $this->_currentObjectID = null;
+        }
+        $this->_cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->_parent = null;
+
+        //    Close down the php://temp file
+        $this->__destruct();
+    }
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The worksheet for this cell collection
+     * @param    array of mixed        $arguments    Additional initialisation arguments
+     */
+    public function __construct(PHPExcel_Worksheet $parent, $arguments)
+    {
+        $this->_memoryCacheSize = (isset($arguments['memoryCacheSize'])) ? $arguments['memoryCacheSize'] : '1MB';
+
+        parent::__construct($parent);
+        if (is_null($this->_fileHandle)) {
+            $this->_fileHandle = fopen('php://temp/maxmemory:' . $this->_memoryCacheSize, 'a+');
+        }
+    }
+
+    /**
+     * Destroy this cell collection
+     */
+    public function __destruct()
+    {
+        if (!is_null($this->_fileHandle)) {
+            fclose($this->_fileHandle);
+        }
+        $this->_fileHandle = null;
+    }
+}
diff --git a/Classes/PHPExcel/CachedObjectStorage/SQLite.php b/Classes/PHPExcel/CachedObjectStorage/SQLite.php
index 92179a28..0a63cd2d 100644
--- a/Classes/PHPExcel/CachedObjectStorage/SQLite.php
+++ b/Classes/PHPExcel/CachedObjectStorage/SQLite.php
@@ -1,306 +1,307 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2015 PHPExcel
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    ##VERSION##, ##DATE##
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_SQLite
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_SQLite extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-	/**
-	 * Database table name
-	 *
-	 * @var string
-	 */
-	private $_TableName = null;
-
-	/**
-	 * Database handle
-	 *
-	 * @var resource
-	 */
-	private $_DBHandle = null;
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	PHPExcel_Exception
-     */
-	protected function _storeData() {
-		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
-			$this->_currentObject->detach();
-
-			if (!$this->_DBHandle->queryExec("INSERT OR REPLACE INTO kvp_".$this->_TableName." VALUES('".$this->_currentObjectID."','".sqlite_escape_string(serialize($this->_currentObject))."')"))
-				throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	PHPExcel_Cell
-     * @throws	PHPExcel_Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	PHPExcel_Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		$query = "SELECT value FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
-		$cellResultSet = $this->_DBHandle->query($query,SQLITE_ASSOC);
-		if ($cellResultSet === false) {
-			throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
-		} elseif ($cellResultSet->numRows() == 0) {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-
-		$cellResult = $cellResultSet->fetchSingle();
-		$this->_currentObject = unserialize($cellResult);
-        //    Re-attach this as the cell's parent
-        $this->_currentObject->attach($this);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Is a value set for an indexed cell?
-	 *
-	 * @param	string		$pCoord		Coordinate address of the cell to check
-	 * @return	boolean
-	 */
-	public function isDataSet($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return true;
-		}
-
-		//	Check if the requested entry exists in the cache
-		$query = "SELECT id FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
-		$cellResultSet = $this->_DBHandle->query($query,SQLITE_ASSOC);
-		if ($cellResultSet === false) {
-			throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
-		} elseif ($cellResultSet->numRows() == 0) {
-			//	Return null if requested entry doesn't exist in cache
-			return false;
-		}
-		return true;
-	}	//	function isDataSet()
-
-
-    /**
-     * Delete a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to delete
-     * @throws	PHPExcel_Exception
-     */
-	public function deleteCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			$this->_currentObject->detach();
-			$this->_currentObjectID = $this->_currentObject = null;
-		}
-
-		//	Check if the requested entry exists in the cache
-		$query = "DELETE FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
-		if (!$this->_DBHandle->queryExec($query))
-			throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
-
-		$this->_currentCellIsDirty = false;
-	}	//	function deleteCacheData()
-
-
-	/**
-	 * Move a cell object from one address to another
-	 *
-	 * @param	string		$fromAddress	Current address of the cell to move
-	 * @param	string		$toAddress		Destination address of the cell to move
-	 * @return	boolean
-	 */
-	public function moveCell($fromAddress, $toAddress) {
-		if ($fromAddress === $this->_currentObjectID) {
-			$this->_currentObjectID = $toAddress;
-		}
-
-		$query = "DELETE FROM kvp_".$this->_TableName." WHERE id='".$toAddress."'";
-		$result = $this->_DBHandle->exec($query);
-		if ($result === false)
-			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
-
-		$query = "UPDATE kvp_".$this->_TableName." SET id='".$toAddress."' WHERE id='".$fromAddress."'";
-		$result = $this->_DBHandle->exec($query);
-		if ($result === false)
-			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
-
-		return TRUE;
-	}	//	function moveCell()
-
-
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return	string[]
-	 */
-	public function getCellList() {
-		if ($this->_currentObjectID !== null) {
-			$this->_storeData();
-		}
-
-		$query = "SELECT id FROM kvp_".$this->_TableName;
-		$cellIdsResult = $this->_DBHandle->unbufferedQuery($query,SQLITE_ASSOC);
-		if ($cellIdsResult === false)
-			throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
-
-		$cellKeys = array();
-		foreach($cellIdsResult as $row) {
-			$cellKeys[] = $row['id'];
-		}
-
-		return $cellKeys;
-	}	//	function getCellList()
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		$this->_currentCellIsDirty;
-        $this->_storeData();
-
-		//	Get a new id for the new table name
-		$tableName = str_replace('.','_',$this->_getUniqueID());
-		if (!$this->_DBHandle->queryExec('CREATE TABLE kvp_'.$tableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)
-													AS SELECT * FROM kvp_'.$this->_TableName))
-			throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
-
-		//	Copy the existing cell cache file
-		$this->_TableName = $tableName;
-	}	//	function copyCellCollection()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-
-		//	Close down the temporary cache file
-		$this->__destruct();
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 */
-	public function __construct(PHPExcel_Worksheet $parent) {
-		parent::__construct($parent);
-		if (is_null($this->_DBHandle)) {
-			$this->_TableName = str_replace('.','_',$this->_getUniqueID());
-			$_DBName = ':memory:';
-
-			$this->_DBHandle = new SQLiteDatabase($_DBName);
-			if ($this->_DBHandle === false)
-				throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
-			if (!$this->_DBHandle->queryExec('CREATE TABLE kvp_'.$this->_TableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)'))
-				throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
-		}
-	}	//	function __construct()
-
-
-	/**
-	 * Destroy this cell collection
-	 */
-	public function __destruct() {
-		if (!is_null($this->_DBHandle)) {
-			$this->_DBHandle->queryExec('DROP TABLE kvp_'.$this->_TableName);
-		}
-		$this->_DBHandle = null;
-	}	//	function __destruct()
-
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable() {
-		if (!function_exists('sqlite_open')) {
-			return false;
-		}
-
-		return true;
-	}
-
-}
+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_SQLite
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_SQLite extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Database table name
+     *
+     * @var string
+     */
+    private $_TableName = null;
+
+    /**
+     * Database handle
+     *
+     * @var resource
+     */
+    private $_DBHandle = null;
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function _storeData()
+    {
+        if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+            $this->_currentObject->detach();
+
+            if (!$this->_DBHandle->queryExec("INSERT OR REPLACE INTO kvp_".$this->_TableName." VALUES('".$this->_currentObjectID."','".sqlite_escape_string(serialize($this->_currentObject))."')")) {
+                throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+            }
+            $this->_currentCellIsDirty = false;
+        }
+        $this->_currentObjectID = $this->_currentObject = null;
+    }
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+            $this->_storeData();
+        }
+
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = $cell;
+        $this->_currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID) {
+            return $this->_currentObject;
+        }
+        $this->_storeData();
+
+        $query = "SELECT value FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
+        $cellResultSet = $this->_DBHandle->query($query, SQLITE_ASSOC);
+        if ($cellResultSet === false) {
+            throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+        } elseif ($cellResultSet->numRows() == 0) {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->_currentObjectID = $pCoord;
+
+        $cellResult = $cellResultSet->fetchSingle();
+        $this->_currentObject = unserialize($cellResult);
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->_currentObject;
+    }
+
+    /**
+     * Is a value set for an indexed cell?
+     *
+     * @param    string        $pCoord        Coordinate address of the cell to check
+     * @return    boolean
+     */
+    public function isDataSet($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID) {
+            return true;
+        }
+
+        //    Check if the requested entry exists in the cache
+        $query = "SELECT id FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
+        $cellResultSet = $this->_DBHandle->query($query, SQLITE_ASSOC);
+        if ($cellResultSet === false) {
+            throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+        } elseif ($cellResultSet->numRows() == 0) {
+            //    Return null if requested entry doesn't exist in cache
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to delete
+     * @throws    PHPExcel_Exception
+     */
+    public function deleteCacheData($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID) {
+            $this->_currentObject->detach();
+            $this->_currentObjectID = $this->_currentObject = null;
+        }
+
+        //    Check if the requested entry exists in the cache
+        $query = "DELETE FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
+        if (!$this->_DBHandle->queryExec($query)) {
+            throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+        }
+
+        $this->_currentCellIsDirty = false;
+    }
+
+    /**
+     * Move a cell object from one address to another
+     *
+     * @param    string        $fromAddress    Current address of the cell to move
+     * @param    string        $toAddress        Destination address of the cell to move
+     * @return    boolean
+     */
+    public function moveCell($fromAddress, $toAddress)
+    {
+        if ($fromAddress === $this->_currentObjectID) {
+            $this->_currentObjectID = $toAddress;
+        }
+
+        $query = "DELETE FROM kvp_".$this->_TableName." WHERE id='".$toAddress."'";
+        $result = $this->_DBHandle->exec($query);
+        if ($result === false) {
+            throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+        }
+
+        $query = "UPDATE kvp_".$this->_TableName." SET id='".$toAddress."' WHERE id='".$fromAddress."'";
+        $result = $this->_DBHandle->exec($query);
+        if ($result === false) {
+            throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+        }
+
+        return true;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return    string[]
+     */
+    public function getCellList()
+    {
+        if ($this->_currentObjectID !== null) {
+            $this->_storeData();
+        }
+
+        $query = "SELECT id FROM kvp_".$this->_TableName;
+        $cellIdsResult = $this->_DBHandle->unbufferedQuery($query, SQLITE_ASSOC);
+        if ($cellIdsResult === false) {
+            throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+        }
+
+        $cellKeys = array();
+        foreach ($cellIdsResult as $row) {
+            $cellKeys[] = $row['id'];
+        }
+
+        return $cellKeys;
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     * @return    void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        $this->_currentCellIsDirty;
+        $this->_storeData();
+
+        //    Get a new id for the new table name
+        $tableName = str_replace('.', '_', $this->_getUniqueID());
+        if (!$this->_DBHandle->queryExec('CREATE TABLE kvp_'.$tableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)
+            AS SELECT * FROM kvp_'.$this->_TableName)
+        ) {
+            throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+        }
+
+        //    Copy the existing cell cache file
+        $this->_TableName = $tableName;
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->_currentObject)) {
+            $this->_currentObject->detach();
+            $this->_currentObject = $this->_currentObjectID = null;
+        }
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->_parent = null;
+
+        //    Close down the temporary cache file
+        $this->__destruct();
+    }
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The worksheet for this cell collection
+     */
+    public function __construct(PHPExcel_Worksheet $parent)
+    {
+        parent::__construct($parent);
+        if (is_null($this->_DBHandle)) {
+            $this->_TableName = str_replace('.', '_', $this->_getUniqueID());
+            $_DBName = ':memory:';
+
+            $this->_DBHandle = new SQLiteDatabase($_DBName);
+            if ($this->_DBHandle === false) {
+                throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+            }
+            if (!$this->_DBHandle->queryExec('CREATE TABLE kvp_'.$this->_TableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)')) {
+                throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+            }
+        }
+    }
+
+    /**
+     * Destroy this cell collection
+     */
+    public function __destruct()
+    {
+        if (!is_null($this->_DBHandle)) {
+            $this->_DBHandle->queryExec('DROP TABLE kvp_'.$this->_TableName);
+        }
+        $this->_DBHandle = null;
+    }
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return    boolean
+     */
+    public static function cacheMethodIsAvailable()
+    {
+        if (!function_exists('sqlite_open')) {
+            return false;
+        }
+
+        return true;
+    }
+}
diff --git a/Classes/PHPExcel/CachedObjectStorage/SQLite3.php b/Classes/PHPExcel/CachedObjectStorage/SQLite3.php
index c54adb4e..4d013eff 100644
--- a/Classes/PHPExcel/CachedObjectStorage/SQLite3.php
+++ b/Classes/PHPExcel/CachedObjectStorage/SQLite3.php
@@ -1,345 +1,346 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2015 PHPExcel
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    ##VERSION##, ##DATE##
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_SQLite3
- *
- * @category   PHPExcel
- * @package    PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_SQLite3 extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-	/**
-	 * Database table name
-	 *
-	 * @var string
-	 */
-	private $_TableName = null;
-
-	/**
-	 * Database handle
-	 *
-	 * @var resource
-	 */
-	private $_DBHandle = null;
-
-	/**
-	 * Prepared statement for a SQLite3 select query
-	 *
-	 * @var SQLite3Stmt
-	 */
-	private $_selectQuery;
-
-	/**
-	 * Prepared statement for a SQLite3 insert query
-	 *
-	 * @var SQLite3Stmt
-	 */
-	private $_insertQuery;
-
-	/**
-	 * Prepared statement for a SQLite3 update query
-	 *
-	 * @var SQLite3Stmt
-	 */
-	private $_updateQuery;
-
-	/**
-	 * Prepared statement for a SQLite3 delete query
-	 *
-	 * @var SQLite3Stmt
-	 */
-	private $_deleteQuery;
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	PHPExcel_Exception
-     */
-	protected function _storeData() {
-		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
-			$this->_currentObject->detach();
-
-			$this->_insertQuery->bindValue('id',$this->_currentObjectID,SQLITE3_TEXT);
-			$this->_insertQuery->bindValue('data',serialize($this->_currentObject),SQLITE3_BLOB);
-			$result = $this->_insertQuery->execute();
-			if ($result === false)
-				throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
-			$this->_currentCellIsDirty = false;
-		}
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-    /**
-     * Add or Update a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to update
-     * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	PHPExcel_Cell
-     * @throws	PHPExcel_Exception
-     */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-    /**
-     * Get cell at a specific coordinate
-     *
-     * @param 	string 			$pCoord		Coordinate of the cell
-     * @throws 	PHPExcel_Exception
-     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
-     */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		$this->_selectQuery->bindValue('id',$pCoord,SQLITE3_TEXT);
-		$cellResult = $this->_selectQuery->execute();
-		if ($cellResult === FALSE) {
-			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
-		}
-		$cellData = $cellResult->fetchArray(SQLITE3_ASSOC);
-		if ($cellData === FALSE) {
-			//	Return null if requested entry doesn't exist in cache
-			return NULL;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-
-		$this->_currentObject = unserialize($cellData['value']);
-        //    Re-attach this as the cell's parent
-        $this->_currentObject->attach($this);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 *	Is a value set for an indexed cell?
-	 *
-	 * @param	string		$pCoord		Coordinate address of the cell to check
-	 * @return	boolean
-	 */
-	public function isDataSet($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return TRUE;
-		}
-
-		//	Check if the requested entry exists in the cache
-		$this->_selectQuery->bindValue('id',$pCoord,SQLITE3_TEXT);
-		$cellResult = $this->_selectQuery->execute();
-		if ($cellResult === FALSE) {
-			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
-		}
-		$cellData = $cellResult->fetchArray(SQLITE3_ASSOC);
-
-		return ($cellData === FALSE) ? FALSE : TRUE;
-	}	//	function isDataSet()
-
-
-    /**
-     *	Delete a cell in cache identified by coordinate address
-     *
-     * @param	string			$pCoord		Coordinate address of the cell to delete
-     * @throws	PHPExcel_Exception
-     */
-	public function deleteCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			$this->_currentObject->detach();
-			$this->_currentObjectID = $this->_currentObject = NULL;
-		}
-
-		//	Check if the requested entry exists in the cache
-		$this->_deleteQuery->bindValue('id',$pCoord,SQLITE3_TEXT);
-		$result = $this->_deleteQuery->execute();
-		if ($result === FALSE)
-			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
-
-		$this->_currentCellIsDirty = FALSE;
-	}	//	function deleteCacheData()
-
-
-	/**
-	 * Move a cell object from one address to another
-	 *
-	 * @param	string		$fromAddress	Current address of the cell to move
-	 * @param	string		$toAddress		Destination address of the cell to move
-	 * @return	boolean
-	 */
-	public function moveCell($fromAddress, $toAddress) {
-		if ($fromAddress === $this->_currentObjectID) {
-			$this->_currentObjectID = $toAddress;
-		}
-
-		$this->_deleteQuery->bindValue('id',$toAddress,SQLITE3_TEXT);
-		$result = $this->_deleteQuery->execute();
-		if ($result === false)
-			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
-
-		$this->_updateQuery->bindValue('toid',$toAddress,SQLITE3_TEXT);
-		$this->_updateQuery->bindValue('fromid',$fromAddress,SQLITE3_TEXT);
-		$result = $this->_updateQuery->execute();
-		if ($result === false)
-			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
-
-		return TRUE;
-	}	//	function moveCell()
-
-
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return	string[]
-	 */
-	public function getCellList() {
-		if ($this->_currentObjectID !== null) {
-			$this->_storeData();
-		}
-
-		$query = "SELECT id FROM kvp_".$this->_TableName;
-		$cellIdsResult = $this->_DBHandle->query($query);
-		if ($cellIdsResult === false)
-			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
-
-		$cellKeys = array();
-		while ($row = $cellIdsResult->fetchArray(SQLITE3_ASSOC)) {
-			$cellKeys[] = $row['id'];
-		}
-
-		return $cellKeys;
-	}	//	function getCellList()
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		$this->_currentCellIsDirty;
-        $this->_storeData();
-
-		//	Get a new id for the new table name
-		$tableName = str_replace('.','_',$this->_getUniqueID());
-		if (!$this->_DBHandle->exec('CREATE TABLE kvp_'.$tableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)
-		                                       AS SELECT * FROM kvp_'.$this->_TableName))
-			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
-
-		//	Copy the existing cell cache file
-		$this->_TableName = $tableName;
-	}	//	function copyCellCollection()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-
-		//	Close down the temporary cache file
-		$this->__destruct();
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 */
-	public function __construct(PHPExcel_Worksheet $parent) {
-		parent::__construct($parent);
-		if (is_null($this->_DBHandle)) {
-			$this->_TableName = str_replace('.','_',$this->_getUniqueID());
-			$_DBName = ':memory:';
-
-			$this->_DBHandle = new SQLite3($_DBName);
-			if ($this->_DBHandle === false)
-				throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
-			if (!$this->_DBHandle->exec('CREATE TABLE kvp_'.$this->_TableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)'))
-				throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
-		}
-
-		$this->_selectQuery = $this->_DBHandle->prepare("SELECT value FROM kvp_".$this->_TableName." WHERE id = :id");
-		$this->_insertQuery = $this->_DBHandle->prepare("INSERT OR REPLACE INTO kvp_".$this->_TableName." VALUES(:id,:data)");
-		$this->_updateQuery = $this->_DBHandle->prepare("UPDATE kvp_".$this->_TableName." SET id=:toId WHERE id=:fromId");
-		$this->_deleteQuery = $this->_DBHandle->prepare("DELETE FROM kvp_".$this->_TableName." WHERE id = :id");
-	}	//	function __construct()
-
-
-	/**
-	 * Destroy this cell collection
-	 */
-	public function __destruct() {
-		if (!is_null($this->_DBHandle)) {
-			$this->_DBHandle->exec('DROP TABLE kvp_'.$this->_TableName);
-			$this->_DBHandle->close();
-		}
-		$this->_DBHandle = null;
-	}	//	function __destruct()
-
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable() {
-		if (!class_exists('SQLite3',FALSE)) {
-			return false;
-		}
-
-		return true;
-	}
-
-}
+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_SQLite3
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_SQLite3 extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Database table name
+     *
+     * @var string
+     */
+    private $_TableName = null;
+
+    /**
+     * Database handle
+     *
+     * @var resource
+     */
+    private $_DBHandle = null;
+
+    /**
+     * Prepared statement for a SQLite3 select query
+     *
+     * @var SQLite3Stmt
+     */
+    private $_selectQuery;
+
+    /**
+     * Prepared statement for a SQLite3 insert query
+     *
+     * @var SQLite3Stmt
+     */
+    private $_insertQuery;
+
+    /**
+     * Prepared statement for a SQLite3 update query
+     *
+     * @var SQLite3Stmt
+     */
+    private $_updateQuery;
+
+    /**
+     * Prepared statement for a SQLite3 delete query
+     *
+     * @var SQLite3Stmt
+     */
+    private $_deleteQuery;
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function _storeData()
+    {
+        if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+            $this->_currentObject->detach();
+
+            $this->_insertQuery->bindValue('id', $this->_currentObjectID, SQLITE3_TEXT);
+            $this->_insertQuery->bindValue('data', serialize($this->_currentObject), SQLITE3_BLOB);
+            $result = $this->_insertQuery->execute();
+            if ($result === false) {
+                throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+            }
+            $this->_currentCellIsDirty = false;
+        }
+        $this->_currentObjectID = $this->_currentObject = null;
+    }
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+            $this->_storeData();
+        }
+
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = $cell;
+        $this->_currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param     string             $pCoord        Coordinate of the cell
+     * @throws     PHPExcel_Exception
+     * @return     PHPExcel_Cell     Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID) {
+            return $this->_currentObject;
+        }
+        $this->_storeData();
+
+        $this->_selectQuery->bindValue('id', $pCoord, SQLITE3_TEXT);
+        $cellResult = $this->_selectQuery->execute();
+        if ($cellResult === false) {
+            throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+        }
+        $cellData = $cellResult->fetchArray(SQLITE3_ASSOC);
+        if ($cellData === false) {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->_currentObjectID = $pCoord;
+
+        $this->_currentObject = unserialize($cellData['value']);
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->_currentObject;
+    }
+
+    /**
+     *    Is a value set for an indexed cell?
+     *
+     * @param    string        $pCoord        Coordinate address of the cell to check
+     * @return    boolean
+     */
+    public function isDataSet($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID) {
+            return true;
+        }
+
+        //    Check if the requested entry exists in the cache
+        $this->_selectQuery->bindValue('id', $pCoord, SQLITE3_TEXT);
+        $cellResult = $this->_selectQuery->execute();
+        if ($cellResult === false) {
+            throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+        }
+        $cellData = $cellResult->fetchArray(SQLITE3_ASSOC);
+
+        return ($cellData === false) ? false : true;
+    }
+
+    /**
+     *    Delete a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to delete
+     * @throws    PHPExcel_Exception
+     */
+    public function deleteCacheData($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID) {
+            $this->_currentObject->detach();
+            $this->_currentObjectID = $this->_currentObject = null;
+        }
+
+        //    Check if the requested entry exists in the cache
+        $this->_deleteQuery->bindValue('id', $pCoord, SQLITE3_TEXT);
+        $result = $this->_deleteQuery->execute();
+        if ($result === false) {
+            throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+        }
+
+        $this->_currentCellIsDirty = false;
+    }
+
+    /**
+     * Move a cell object from one address to another
+     *
+     * @param    string        $fromAddress    Current address of the cell to move
+     * @param    string        $toAddress        Destination address of the cell to move
+     * @return    boolean
+     */
+    public function moveCell($fromAddress, $toAddress)
+    {
+        if ($fromAddress === $this->_currentObjectID) {
+            $this->_currentObjectID = $toAddress;
+        }
+
+        $this->_deleteQuery->bindValue('id', $toAddress, SQLITE3_TEXT);
+        $result = $this->_deleteQuery->execute();
+        if ($result === false) {
+            throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+        }
+
+        $this->_updateQuery->bindValue('toid', $toAddress, SQLITE3_TEXT);
+        $this->_updateQuery->bindValue('fromid', $fromAddress, SQLITE3_TEXT);
+        $result = $this->_updateQuery->execute();
+        if ($result === false) {
+            throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+        }
+
+        return true;
+    }
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return    string[]
+     */
+    public function getCellList()
+    {
+        if ($this->_currentObjectID !== null) {
+            $this->_storeData();
+        }
+
+        $query = "SELECT id FROM kvp_".$this->_TableName;
+        $cellIdsResult = $this->_DBHandle->query($query);
+        if ($cellIdsResult === false) {
+            throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+        }
+
+        $cellKeys = array();
+        while ($row = $cellIdsResult->fetchArray(SQLITE3_ASSOC)) {
+            $cellKeys[] = $row['id'];
+        }
+
+        return $cellKeys;
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     * @return    void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        $this->_currentCellIsDirty;
+        $this->_storeData();
+
+        //    Get a new id for the new table name
+        $tableName = str_replace('.', '_', $this->_getUniqueID());
+        if (!$this->_DBHandle->exec('CREATE TABLE kvp_'.$tableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)
+            AS SELECT * FROM kvp_'.$this->_TableName)
+        ) {
+            throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+        }
+
+        //    Copy the existing cell cache file
+        $this->_TableName = $tableName;
+    }
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->_currentObject)) {
+            $this->_currentObject->detach();
+            $this->_currentObject = $this->_currentObjectID = null;
+        }
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->_parent = null;
+
+        //    Close down the temporary cache file
+        $this->__destruct();
+    }
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The worksheet for this cell collection
+     */
+    public function __construct(PHPExcel_Worksheet $parent)
+    {
+        parent::__construct($parent);
+        if (is_null($this->_DBHandle)) {
+            $this->_TableName = str_replace('.', '_', $this->_getUniqueID());
+            $_DBName = ':memory:';
+
+            $this->_DBHandle = new SQLite3($_DBName);
+            if ($this->_DBHandle === false) {
+                throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+            }
+            if (!$this->_DBHandle->exec('CREATE TABLE kvp_'.$this->_TableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)')) {
+                throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+            }
+        }
+
+        $this->_selectQuery = $this->_DBHandle->prepare("SELECT value FROM kvp_".$this->_TableName." WHERE id = :id");
+        $this->_insertQuery = $this->_DBHandle->prepare("INSERT OR REPLACE INTO kvp_".$this->_TableName." VALUES(:id,:data)");
+        $this->_updateQuery = $this->_DBHandle->prepare("UPDATE kvp_".$this->_TableName." SET id=:toId WHERE id=:fromId");
+        $this->_deleteQuery = $this->_DBHandle->prepare("DELETE FROM kvp_".$this->_TableName." WHERE id = :id");
+    }
+
+    /**
+     * Destroy this cell collection
+     */
+    public function __destruct()
+    {
+        if (!is_null($this->_DBHandle)) {
+            $this->_DBHandle->exec('DROP TABLE kvp_'.$this->_TableName);
+            $this->_DBHandle->close();
+        }
+        $this->_DBHandle = null;
+    }
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return    boolean
+     */
+    public static function cacheMethodIsAvailable()
+    {
+        if (!class_exists('SQLite3', false)) {
+            return false;
+        }
+
+        return true;
+    }
+}
diff --git a/Classes/PHPExcel/CachedObjectStorage/Wincache.php b/Classes/PHPExcel/CachedObjectStorage/Wincache.php
index 6eeeef60..5b1fc43d 100644
--- a/Classes/PHPExcel/CachedObjectStorage/Wincache.php
+++ b/Classes/PHPExcel/CachedObjectStorage/Wincache.php
@@ -1,294 +1,289 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2015 PHPExcel
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * @category   PHPExcel
- * @package	PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version	##VERSION##, ##DATE##
- */
-
-
-/**
- * PHPExcel_CachedObjectStorage_Wincache
- *
- * @category   PHPExcel
- * @package	PHPExcel_CachedObjectStorage
- * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CachedObjectStorage_Wincache extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
-
-	/**
-	 * Prefix used to uniquely identify cache data for this worksheet
-	 *
-	 * @var string
-	 */
-	private $_cachePrefix = null;
-
-	/**
-	 * Cache timeout
-	 *
-	 * @var integer
-	 */
-	private $_cacheTime = 600;
-
-
-    /**
-     * Store cell data in cache for the current cell object if it's "dirty",
-     *     and the 'nullify' the current cell object
-     *
-	 * @return	void
-     * @throws	PHPExcel_Exception
-     */
-	protected function _storeData() {
-		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
-			$this->_currentObject->detach();
-
-			$obj = serialize($this->_currentObject);
-			if (wincache_ucache_exists($this->_cachePrefix.$this->_currentObjectID.'.cache')) {
-				if (!wincache_ucache_set($this->_cachePrefix.$this->_currentObjectID.'.cache', $obj, $this->_cacheTime)) {
-					$this->__destruct();
-					throw new PHPExcel_Exception('Failed to store cell '.$this->_currentObjectID.' in WinCache');
-				}
-			} else {
-				if (!wincache_ucache_add($this->_cachePrefix.$this->_currentObjectID.'.cache', $obj, $this->_cacheTime)) {
-					$this->__destruct();
-					throw new PHPExcel_Exception('Failed to store cell '.$this->_currentObjectID.' in WinCache');
-				}
-			}
-			$this->_currentCellIsDirty = false;
-		}
-
-		$this->_currentObjectID = $this->_currentObject = null;
-	}	//	function _storeData()
-
-
-	/**
-	 * Add or Update a cell in cache identified by coordinate address
-	 *
-	 * @param	string			$pCoord		Coordinate address of the cell to update
-	 * @param	PHPExcel_Cell	$cell		Cell to update
-	 * @return	PHPExcel_Cell
-	 * @throws	PHPExcel_Exception
-	 */
-	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
-		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
-			$this->_storeData();
-		}
-		$this->_cellCache[$pCoord] = true;
-
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = $cell;
-		$this->_currentCellIsDirty = true;
-
-		return $cell;
-	}	//	function addCacheData()
-
-
-	/**
-	 * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
-	 *
-	 * @param	string		$pCoord		Coordinate address of the cell to check
-	 * @return	boolean
-	 */
-	public function isDataSet($pCoord) {
-		//	Check if the requested entry is the current object, or exists in the cache
-		if (parent::isDataSet($pCoord)) {
-			if ($this->_currentObjectID == $pCoord) {
-				return true;
-			}
-			//	Check if the requested entry still exists in cache
-			$success = wincache_ucache_exists($this->_cachePrefix.$pCoord.'.cache');
-			if ($success === false) {
-				//	Entry no longer exists in Wincache, so clear it from the cache array
-				parent::deleteCacheData($pCoord);
-				throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in WinCache');
-			}
-			return true;
-		}
-		return false;
-	}	//	function isDataSet()
-
-
-	/**
-	 * Get cell at a specific coordinate
-	 *
-	 * @param	string			$pCoord		Coordinate of the cell
-	 * @throws	PHPExcel_Exception
-	 * @return	PHPExcel_Cell	Cell that was found, or null if not found
-	 */
-	public function getCacheData($pCoord) {
-		if ($pCoord === $this->_currentObjectID) {
-			return $this->_currentObject;
-		}
-		$this->_storeData();
-
-		//	Check if the entry that has been requested actually exists
-		$obj = null;
-		if (parent::isDataSet($pCoord)) {
-			$success = false;
-			$obj = wincache_ucache_get($this->_cachePrefix.$pCoord.'.cache', $success);
-			if ($success === false) {
-				//	Entry no longer exists in WinCache, so clear it from the cache array
-				parent::deleteCacheData($pCoord);
-				throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in WinCache');
-			}
-		} else {
-			//	Return null if requested entry doesn't exist in cache
-			return null;
-		}
-
-		//	Set current entry to the requested entry
-		$this->_currentObjectID = $pCoord;
-		$this->_currentObject = unserialize($obj);
-        //    Re-attach this as the cell's parent
-        $this->_currentObject->attach($this);
-
-		//	Return requested entry
-		return $this->_currentObject;
-	}	//	function getCacheData()
-
-
-	/**
-	 * Get a list of all cell addresses currently held in cache
-	 *
-	 * @return  string[]
-	 */
-	public function getCellList() {
-		if ($this->_currentObjectID !== null) {
-			$this->_storeData();
-		}
-
-		return parent::getCellList();
-	}
-
-
-	/**
-	 * Delete a cell in cache identified by coordinate address
-	 *
-	 * @param	string			$pCoord		Coordinate address of the cell to delete
-	 * @throws	PHPExcel_Exception
-	 */
-	public function deleteCacheData($pCoord) {
-		//	Delete the entry from Wincache
-		wincache_ucache_delete($this->_cachePrefix.$pCoord.'.cache');
-
-		//	Delete the entry from our cell address array
-		parent::deleteCacheData($pCoord);
-	}	//	function deleteCacheData()
-
-
-	/**
-	 * Clone the cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
-	 * @return	void
-	 */
-	public function copyCellCollection(PHPExcel_Worksheet $parent) {
-		parent::copyCellCollection($parent);
-		//	Get a new id for the new file name
-		$baseUnique = $this->_getUniqueID();
-		$newCachePrefix = substr(md5($baseUnique),0,8).'.';
-		$cacheList = $this->getCellList();
-		foreach($cacheList as $cellID) {
-			if ($cellID != $this->_currentObjectID) {
-				$success = false;
-				$obj = wincache_ucache_get($this->_cachePrefix.$cellID.'.cache', $success);
-				if ($success === false) {
-					//	Entry no longer exists in WinCache, so clear it from the cache array
-					parent::deleteCacheData($cellID);
-					throw new PHPExcel_Exception('Cell entry '.$cellID.' no longer exists in Wincache');
-				}
-				if (!wincache_ucache_add($newCachePrefix.$cellID.'.cache', $obj, $this->_cacheTime)) {
-					$this->__destruct();
-					throw new PHPExcel_Exception('Failed to store cell '.$cellID.' in Wincache');
-				}
-			}
-		}
-		$this->_cachePrefix = $newCachePrefix;
-	}	//	function copyCellCollection()
-
-
-	/**
-	 * Clear the cell collection and disconnect from our parent
-	 *
-	 * @return	void
-	 */
-	public function unsetWorksheetCells() {
-		if(!is_null($this->_currentObject)) {
-			$this->_currentObject->detach();
-			$this->_currentObject = $this->_currentObjectID = null;
-		}
-
-		//	Flush the WinCache cache
-		$this->__destruct();
-
-		$this->_cellCache = array();
-
-		//	detach ourself from the worksheet, so that it can then delete this object successfully
-		$this->_parent = null;
-	}	//	function unsetWorksheetCells()
-
-
-	/**
-	 * Initialise this new cell collection
-	 *
-	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
-	 * @param	array of mixed		$arguments	Additional initialisation arguments
-	 */
-	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
-		$cacheTime	= (isset($arguments['cacheTime']))	? $arguments['cacheTime']	: 600;
-
-		if (is_null($this->_cachePrefix)) {
-			$baseUnique = $this->_getUniqueID();
-			$this->_cachePrefix = substr(md5($baseUnique),0,8).'.';
-			$this->_cacheTime = $cacheTime;
-
-			parent::__construct($parent);
-		}
-	}	//	function __construct()
-
-
-	/**
-	 * Destroy this cell collection
-	 */
-	public function __destruct() {
-		$cacheList = $this->getCellList();
-		foreach($cacheList as $cellID) {
-			wincache_ucache_delete($this->_cachePrefix.$cellID.'.cache');
-		}
-	}	//	function __destruct()
-
-
-	/**
-	 * Identify whether the caching method is currently available
-	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
-	 *
-	 * @return	boolean
-	 */
-	public static function cacheMethodIsAvailable() {
-		if (!function_exists('wincache_ucache_add')) {
-			return false;
-		}
-
-		return true;
-	}
-
-}
+<?php
+
+/**
+ * PHPExcel_CachedObjectStorage_Wincache
+ *
+ * Copyright (c) 2006 - 2015 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+class PHPExcel_CachedObjectStorage_Wincache extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Prefix used to uniquely identify cache data for this worksheet
+     *
+     * @var string
+     */
+    private $_cachePrefix = null;
+
+    /**
+     * Cache timeout
+     *
+     * @var integer
+     */
+    private $_cacheTime = 600;
+
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @return    void
+     * @throws    PHPExcel_Exception
+     */
+    protected function _storeData()
+    {
+        if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+            $this->_currentObject->detach();
+
+            $obj = serialize($this->_currentObject);
+            if (wincache_ucache_exists($this->_cachePrefix.$this->_currentObjectID.'.cache')) {
+                if (!wincache_ucache_set($this->_cachePrefix.$this->_currentObjectID.'.cache', $obj, $this->_cacheTime)) {
+                    $this->__destruct();
+                    throw new PHPExcel_Exception('Failed to store cell '.$this->_currentObjectID.' in WinCache');
+                }
+            } else {
+                if (!wincache_ucache_add($this->_cachePrefix.$this->_currentObjectID.'.cache', $obj, $this->_cacheTime)) {
+                    $this->__destruct();
+                    throw new PHPExcel_Exception('Failed to store cell '.$this->_currentObjectID.' in WinCache');
+                }
+            }
+            $this->_currentCellIsDirty = false;
+        }
+
+        $this->_currentObjectID = $this->_currentObject = null;
+    }
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to update
+     * @param    PHPExcel_Cell    $cell        Cell to update
+     * @return    PHPExcel_Cell
+     * @throws    PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell)
+    {
+        if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+            $this->_storeData();
+        }
+        $this->_cellCache[$pCoord] = true;
+
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = $cell;
+        $this->_currentCellIsDirty = true;
+
+        return $cell;
+    }
+
+    /**
+     * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+     *
+     * @param    string        $pCoord        Coordinate address of the cell to check
+     * @return    boolean
+     */
+    public function isDataSet($pCoord)
+    {
+        //    Check if the requested entry is the current object, or exists in the cache
+        if (parent::isDataSet($pCoord)) {
+            if ($this->_currentObjectID == $pCoord) {
+                return true;
+            }
+            //    Check if the requested entry still exists in cache
+            $success = wincache_ucache_exists($this->_cachePrefix.$pCoord.'.cache');
+            if ($success === false) {
+                //    Entry no longer exists in Wincache, so clear it from the cache array
+                parent::deleteCacheData($pCoord);
+                throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in WinCache');
+            }
+            return true;
+        }
+        return false;
+    }
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param    string            $pCoord        Coordinate of the cell
+     * @throws    PHPExcel_Exception
+     * @return    PHPExcel_Cell    Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord)
+    {
+        if ($pCoord === $this->_currentObjectID) {
+            return $this->_currentObject;
+        }
+        $this->_storeData();
+
+        //    Check if the entry that has been requested actually exists
+        $obj = null;
+        if (parent::isDataSet($pCoord)) {
+            $success = false;
+            $obj = wincache_ucache_get($this->_cachePrefix.$pCoord.'.cache', $success);
+            if ($success === false) {
+                //    Entry no longer exists in WinCache, so clear it from the cache array
+                parent::deleteCacheData($pCoord);
+                throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in WinCache');
+            }
+        } else {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = unserialize($obj);
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->_currentObject;
+    }
+
+
+    /**
+     * Get a list of all cell addresses currently held in cache
+     *
+     * @return  string[]
+     */
+    public function getCellList()
+    {
+        if ($this->_currentObjectID !== null) {
+            $this->_storeData();
+        }
+
+        return parent::getCellList();
+    }
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @param    string            $pCoord        Coordinate address of the cell to delete
+     * @throws    PHPExcel_Exception
+     */
+    public function deleteCacheData($pCoord)
+    {
+        //    Delete the entry from Wincache
+        wincache_ucache_delete($this->_cachePrefix.$pCoord.'.cache');
+
+        //    Delete the entry from our cell address array
+        parent::deleteCacheData($pCoord);
+    }
+
+    /**
+     * Clone the cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The new worksheet
+     * @return    void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent)
+    {
+        parent::copyCellCollection($parent);
+        //    Get a new id for the new file name
+        $baseUnique = $this->_getUniqueID();
+        $newCachePrefix = substr(md5($baseUnique), 0, 8) . '.';
+        $cacheList = $this->getCellList();
+        foreach ($cacheList as $cellID) {
+            if ($cellID != $this->_currentObjectID) {
+                $success = false;
+                $obj = wincache_ucache_get($this->_cachePrefix.$cellID.'.cache', $success);
+                if ($success === false) {
+                    //    Entry no longer exists in WinCache, so clear it from the cache array
+                    parent::deleteCacheData($cellID);
+                    throw new PHPExcel_Exception('Cell entry '.$cellID.' no longer exists in Wincache');
+                }
+                if (!wincache_ucache_add($newCachePrefix.$cellID.'.cache', $obj, $this->_cacheTime)) {
+                    $this->__destruct();
+                    throw new PHPExcel_Exception('Failed to store cell '.$cellID.' in Wincache');
+                }
+            }
+        }
+        $this->_cachePrefix = $newCachePrefix;
+    }
+
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return    void
+     */
+    public function unsetWorksheetCells()
+    {
+        if (!is_null($this->_currentObject)) {
+            $this->_currentObject->detach();
+            $this->_currentObject = $this->_currentObjectID = null;
+        }
+
+        //    Flush the WinCache cache
+        $this->__destruct();
+
+        $this->_cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->_parent = null;
+    }
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param    PHPExcel_Worksheet    $parent        The worksheet for this cell collection
+     * @param    array of mixed        $arguments    Additional initialisation arguments
+     */
+    public function __construct(PHPExcel_Worksheet $parent, $arguments)
+    {
+        $cacheTime    = (isset($arguments['cacheTime']))    ? $arguments['cacheTime']    : 600;
+
+        if (is_null($this->_cachePrefix)) {
+            $baseUnique = $this->_getUniqueID();
+            $this->_cachePrefix = substr(md5($baseUnique), 0, 8).'.';
+            $this->_cacheTime = $cacheTime;
+
+            parent::__construct($parent);
+        }
+    }
+
+    /**
+     * Destroy this cell collection
+     */
+    public function __destruct()
+    {
+        $cacheList = $this->getCellList();
+        foreach ($cacheList as $cellID) {
+            wincache_ucache_delete($this->_cachePrefix.$cellID.'.cache');
+        }
+    }
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return    boolean
+     */
+    public static function cacheMethodIsAvailable()
+    {
+        if (!function_exists('wincache_ucache_add')) {
+            return false;
+        }
+
+        return true;
+    }
+}
diff --git a/Classes/PHPExcel/CachedObjectStorageFactory.php b/Classes/PHPExcel/CachedObjectStorageFactory.php
index 81baa2fd..251c3ef8 100644
--- a/Classes/PHPExcel/CachedObjectStorageFactory.php
+++ b/Classes/PHPExcel/CachedObjectStorageFactory.php
@@ -1,7 +1,7 @@
 <?php
 
 /**
- * PHPExcel
+ * PHPExcel_CachedObjectStorageFactory
  *
  * Copyright (c) 2006 - 2015 PHPExcel
  *
@@ -25,15 +25,6 @@
  * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
  * @version    ##VERSION##, ##DATE##
  */
-
-
-/**
- * PHPExcel_CachedObjectStorageFactory
- *
- * @category    PHPExcel
- * @package        PHPExcel_CachedObjectStorage
- * @copyright    Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
 class PHPExcel_CachedObjectStorageFactory
 {
     const cache_in_memory               = 'Memory';
@@ -48,21 +39,19 @@ class PHPExcel_CachedObjectStorageFactory
     const cache_to_sqlite               = 'SQLite';
     const cache_to_sqlite3              = 'SQLite3';
 
-
     /**
      * Name of the method used for cell cacheing
      *
      * @var string
      */
-    private static $_cacheStorageMethod = NULL;
+    private static $_cacheStorageMethod = null;
 
     /**
      * Name of the class used for cell cacheing
      *
      * @var string
      */
-    private static $_cacheStorageClass = NULL;
-
+    private static $_cacheStorageClass = null;
 
     /**
      * List of all possible cache storage methods
@@ -83,7 +72,6 @@ class PHPExcel_CachedObjectStorageFactory
         self::cache_to_sqlite3,
     );
 
-
     /**
      * Default arguments for each cache storage method
      *
@@ -100,7 +88,7 @@ class PHPExcel_CachedObjectStorageFactory
                                                     ),
         self::cache_to_phpTemp              => array( 'memoryCacheSize' => '1MB'
                                                     ),
-        self::cache_to_discISAM             => array( 'dir'             => NULL
+        self::cache_to_discISAM             => array( 'dir'             => null
                                                     ),
         self::cache_to_apc                  => array( 'cacheTime'       => 600
                                                     ),
@@ -116,7 +104,6 @@ class PHPExcel_CachedObjectStorageFactory
                                                     ),
     );
 
-
     /**
      * Arguments for the active cache storage method
      *
@@ -124,28 +111,25 @@ class PHPExcel_CachedObjectStorageFactory
      */
     private static $_storageMethodParameters = array();
 
-
     /**
      * Return the current cache storage method
      *
-     * @return string|NULL
+     * @return string|null
      **/
     public static function getCacheStorageMethod()
     {
         return self::$_cacheStorageMethod;
-    }   //    function getCacheStorageMethod()
-
+    }
 
     /**
      * Return the current cache storage class
      *
-     * @return PHPExcel_CachedObjectStorage_ICache|NULL
+     * @return PHPExcel_CachedObjectStorage_ICache|null
      **/
     public static function getCacheStorageClass()
     {
         return self::$_cacheStorageClass;
-    }   //    function getCacheStorageClass()
-
+    }
 
     /**
      * Return the list of all possible cache storage methods
@@ -155,8 +139,7 @@ class PHPExcel_CachedObjectStorageFactory
     public static function getAllCacheStorageMethods()
     {
         return self::$_storageMethods;
-    }   //    function getCacheStorageMethods()
-
+    }
 
     /**
      * Return the list of all available cache storage methods
@@ -166,15 +149,14 @@ class PHPExcel_CachedObjectStorageFactory
     public static function getCacheStorageMethods()
     {
         $activeMethods = array();
-        foreach(self::$_storageMethods as $storageMethod) {
+        foreach (self::$_storageMethods as $storageMethod) {
             $cacheStorageClass = 'PHPExcel_CachedObjectStorage_' . $storageMethod;
             if (call_user_func(array($cacheStorageClass, 'cacheMethodIsAvailable'))) {
                 $activeMethods[] = $storageMethod;
             }
         }
         return $activeMethods;
-    }   //    function getCacheStorageMethods()
-
+    }
 
     /**
      * Identify the cache storage method to use
@@ -186,30 +168,29 @@ class PHPExcel_CachedObjectStorageFactory
      **/
     public static function initialize($method = self::cache_in_memory, $arguments = array())
     {
-        if (!in_array($method,self::$_storageMethods)) {
-            return FALSE;
+        if (!in_array($method, self::$_storageMethods)) {
+            return false;
         }
 
         $cacheStorageClass = 'PHPExcel_CachedObjectStorage_'.$method;
         if (!call_user_func(array( $cacheStorageClass,
                                    'cacheMethodIsAvailable'))) {
-            return FALSE;
+            return false;
         }
 
         self::$_storageMethodParameters[$method] = self::$_storageMethodDefaultParameters[$method];
-        foreach($arguments as $k => $v) {
+        foreach ($arguments as $k => $v) {
             if (array_key_exists($k, self::$_storageMethodParameters[$method])) {
                 self::$_storageMethodParameters[$method][$k] = $v;
             }
         }
 
-        if (self::$_cacheStorageMethod === NULL) {
+        if (self::$_cacheStorageMethod === null) {
             self::$_cacheStorageClass = 'PHPExcel_CachedObjectStorage_' . $method;
             self::$_cacheStorageMethod = $method;
         }
-        return TRUE;
-    }   //    function initialize()
-
+        return true;
+    }
 
     /**
      * Initialise the cache storage
@@ -219,33 +200,32 @@ class PHPExcel_CachedObjectStorageFactory
      **/
     public static function getInstance(PHPExcel_Worksheet $parent)
     {
-        $cacheMethodIsAvailable = TRUE;
-        if (self::$_cacheStorageMethod === NULL) {
+        $cacheMethodIsAvailable = true;
+        if (self::$_cacheStorageMethod === null) {
             $cacheMethodIsAvailable = self::initialize();
         }
 
         if ($cacheMethodIsAvailable) {
-            $instance = new self::$_cacheStorageClass( $parent,
-                                                       self::$_storageMethodParameters[self::$_cacheStorageMethod]
-                                                     );
-            if ($instance !== NULL) {
+            $instance = new self::$_cacheStorageClass(
+                $parent,
+                self::$_storageMethodParameters[self::$_cacheStorageMethod]
+            );
+            if ($instance !== null) {
                 return $instance;
             }
         }
 
-        return FALSE;
-    }   //    function getInstance()
-
+        return false;
+    }
 
     /**
      * Clear the cache storage
      *
      **/
-	public static function finalize()
-	{
-		self::$_cacheStorageMethod = NULL;
-		self::$_cacheStorageClass = NULL;
-		self::$_storageMethodParameters = array();
-	}
-
+    public static function finalize()
+    {
+        self::$_cacheStorageMethod = null;
+        self::$_cacheStorageClass = null;
+        self::$_storageMethodParameters = array();
+    }
 }
diff --git a/Classes/PHPExcel/CalcEngine/CyclicReferenceStack.php b/Classes/PHPExcel/CalcEngine/CyclicReferenceStack.php
index 7cf3f24d..b3bb2bf1 100644
--- a/Classes/PHPExcel/CalcEngine/CyclicReferenceStack.php
+++ b/Classes/PHPExcel/CalcEngine/CyclicReferenceStack.php
@@ -1,6 +1,7 @@
 <?php
+
 /**
- * PHPExcel
+ * PHPExcel_CalcEngine_CyclicReferenceStack
  *
  * Copyright (c) 2006 - 2015 PHPExcel
  *
@@ -21,78 +22,73 @@
  * @category   PHPExcel
  * @package    PHPExcel_Calculation
  * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version	##VERSION##, ##DATE##
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
  */
+class PHPExcel_CalcEngine_CyclicReferenceStack
+{
+    /**
+     *  The call stack for calculated cells
+     *
+     *  @var mixed[]
+     */
+    private $_stack = array();
 
+    /**
+     * Return the number of entries on the stack
+     *
+     * @return  integer
+     */
+    public function count()
+    {
+        return count($this->_stack);
+    }
 
-/**
- * PHPExcel_CalcEngine_CyclicReferenceStack
- *
- * @category	PHPExcel_CalcEngine_CyclicReferenceStack
- * @package		PHPExcel_Calculation
- * @copyright	Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CalcEngine_CyclicReferenceStack {
+    /**
+     * Push a new entry onto the stack
+     *
+     * @param  mixed  $value
+     */
+    public function push($value)
+    {
+        $this->_stack[$value] = $value;
+    }
 
-	/**
-	 *  The call stack for calculated cells
-	 *
-	 *  @var mixed[]
-	 */
-	private $_stack = array();
+    /**
+     * Pop the last entry from the stack
+     *
+     * @return  mixed
+     */
+    public function pop()
+    {
+        return array_pop($this->_stack);
+    }
 
+    /**
+     * Test to see if a specified entry exists on the stack
+     *
+     * @param  mixed  $value  The value to test
+     */
+    public function onStack($value)
+    {
+        return isset($this->_stack[$value]);
+    }
 
-	/**
-	 * Return the number of entries on the stack
-	 *
-	 * @return  integer
-	 */
-	public function count() {
-		return count($this->_stack);
-	}
-
-	/**
-	 * Push a new entry onto the stack
-	 *
-	 * @param  mixed  $value
-	 */
-	public function push($value) {
-		$this->_stack[$value] = $value;
-	}
-
-	/**
-	 * Pop the last entry from the stack
-	 *
-	 * @return  mixed
-	 */
-	public function pop() {
-		return array_pop($this->_stack);
-	}
-
-	/**
-	 * Test to see if a specified entry exists on the stack
-	 *
-	 * @param  mixed  $value  The value to test
-	 */
-	public function onStack($value) {
-		return isset($this->_stack[$value]);
-	}
-
-	/**
-	 * Clear the stack
-	 */
-	public function clear() {
-		$this->_stack = array();
-	}
-
-	/**
-	 * Return an array of all entries on the stack
-	 *
-	 * @return  mixed[]
-	 */
-	public function showStack() {
-		return $this->_stack;
-	}
+    /**
+     * Clear the stack
+     */
+    public function clear()
+    {
+        $this->_stack = array();
+    }
 
+    /**
+     * Return an array of all entries on the stack
+     *
+     * @return  mixed[]
+     */
+    public function showStack()
+    {
+        return $this->_stack;
+    }
 }
diff --git a/Classes/PHPExcel/CalcEngine/Logger.php b/Classes/PHPExcel/CalcEngine/Logger.php
index 3ff9746e..9fd1d7d7 100644
--- a/Classes/PHPExcel/CalcEngine/Logger.php
+++ b/Classes/PHPExcel/CalcEngine/Logger.php
@@ -1,6 +1,7 @@
 <?php
+
 /**
- * PHPExcel
+ * PHPExcel_CalcEngine_Logger
  *
  * Copyright (c) 2006 - 2015 PHPExcel
  *
@@ -21,133 +22,130 @@
  * @category   PHPExcel
  * @package    PHPExcel_Calculation
  * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version	##VERSION##, ##DATE##
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
  */
+class PHPExcel_CalcEngine_Logger
+{
+    /**
+     * Flag to determine whether a debug log should be generated by the calculation engine
+     *        If true, then a debug log will be generated
+     *        If false, then a debug log will not be generated
+     *
+     * @var boolean
+     */
+    private $_writeDebugLog = false;
 
-/**
- * PHPExcel_CalcEngine_Logger
- *
- * @category	PHPExcel
- * @package		PHPExcel_Calculation
- * @copyright	Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_CalcEngine_Logger {
+    /**
+     * Flag to determine whether a debug log should be echoed by the calculation engine
+     *        If true, then a debug log will be echoed
+     *        If false, then a debug log will not be echoed
+     * A debug log can only be echoed if it is generated
+     *
+     * @var boolean
+     */
+    private $_echoDebugLog = false;
 
-	/**
-	 * Flag to determine whether a debug log should be generated by the calculation engine
-	 *		If true, then a debug log will be generated
-	 *		If false, then a debug log will not be generated
-	 *
-	 * @var boolean
-	 */
-	private $_writeDebugLog = FALSE;
+    /**
+     * The debug log generated by the calculation engine
+     *
+     * @var string[]
+     */
+    private $_debugLog = array();
 
-	/**
-	 * Flag to determine whether a debug log should be echoed by the calculation engine
-	 *		If true, then a debug log will be echoed
-	 *		If false, then a debug log will not be echoed
-	 * A debug log can only be echoed if it is generated
-	 *
-	 * @var boolean
-	 */
-	private $_echoDebugLog = FALSE;
+    /**
+     * The calculation engine cell reference stack
+     *
+     * @var PHPExcel_CalcEngine_CyclicReferenceStack
+     */
+    private $_cellStack;
 
-	/**
-	 * The debug log generated by the calculation engine
-	 *
-	 * @var string[]
-	 */
-	private $_debugLog = array();
+    /**
+     * Instantiate a Calculation engine logger
+     *
+     * @param  PHPExcel_CalcEngine_CyclicReferenceStack $stack
+     */
+    public function __construct(PHPExcel_CalcEngine_CyclicReferenceStack $stack)
+    {
+        $this->_cellStack = $stack;
+    }
 
-	/**
-	 * The calculation engine cell reference stack
-	 *
-	 * @var PHPExcel_CalcEngine_CyclicReferenceStack
-	 */
-	private $_cellStack;
+    /**
+     * Enable/Disable Calculation engine logging
+     *
+     * @param  boolean $pValue
+     */
+    public function setWriteDebugLog($pValue = false)
+    {
+        $this->_writeDebugLog = $pValue;
+    }
 
-	
-	/**
-	 * Instantiate a Calculation engine logger
-	 *
-	 * @param  PHPExcel_CalcEngine_CyclicReferenceStack $stack
-	 */
-	public function __construct(PHPExcel_CalcEngine_CyclicReferenceStack $stack) {
-		$this->_cellStack = $stack;
-	}
+    /**
+     * Return whether calculation engine logging is enabled or disabled
+     *
+     * @return  boolean
+     */
+    public function getWriteDebugLog()
+    {
+        return $this->_writeDebugLog;
+    }
 
-	/**
-	 * Enable/Disable Calculation engine logging
-	 *
-	 * @param  boolean $pValue
-	 */
-	public function setWriteDebugLog($pValue = FALSE) {
-		$this->_writeDebugLog = $pValue;
-	}
+    /**
+     * Enable/Disable echoing of debug log information
+     *
+     * @param  boolean $pValue
+     */
+    public function setEchoDebugLog($pValue = false)
+    {
+        $this->_echoDebugLog = $pValue;
+    }
 
-	/**
-	 * Return whether calculation engine logging is enabled or disabled
-	 *
-	 * @return  boolean
-	 */
-	public function getWriteDebugLog() {
-		return $this->_writeDebugLog;
-	}
+    /**
+     * Return whether echoing of debug log information is enabled or disabled
+     *
+     * @return  boolean
+     */
+    public function getEchoDebugLog()
+    {
+        return $this->_echoDebugLog;
+    }
 
-	/**
-	 * Enable/Disable echoing of debug log information
-	 *
-	 * @param  boolean $pValue
-	 */
-	public function setEchoDebugLog($pValue = FALSE) {
-		$this->_echoDebugLog = $pValue;
-	}
+    /**
+     * Write an entry to the calculation engine debug log
+     */
+    public function writeDebugLog()
+    {
+        //    Only write the debug log if logging is enabled
+        if ($this->_writeDebugLog) {
+            $message = implode(func_get_args());
+            $cellReference = implode(' -> ', $this->_cellStack->showStack());
+            if ($this->_echoDebugLog) {
+                echo $cellReference,
+                    ($this->_cellStack->count() > 0 ? ' => ' : ''),
+                    $message,
+                    PHP_EOL;
+            }
+            $this->_debugLog[] = $cellReference .
+                ($this->_cellStack->count() > 0 ? ' => ' : '') .
+                $message;
+        }
+    }
 
-	/**
-	 * Return whether echoing of debug log information is enabled or disabled
-	 *
-	 * @return  boolean
-	 */
-	public function getEchoDebugLog() {
-		return $this->_echoDebugLog;
-	}
-
-	/**
-	 * Write an entry to the calculation engine debug log
-	 */
-	public function writeDebugLog() {
-		//	Only write the debug log if logging is enabled
-		if ($this->_writeDebugLog) {
-			$message = implode(func_get_args());
-			$cellReference = implode(' -> ', $this->_cellStack->showStack());
-			if ($this->_echoDebugLog) {
-				echo $cellReference, 
-					($this->_cellStack->count() > 0 ? ' => ' : ''), 
-					$message, 
-					PHP_EOL;
-			}
-			$this->_debugLog[] = $cellReference . 
-				($this->_cellStack->count() > 0 ? ' => ' : '') . 
-				$message;
-		}
-	}	//	function _writeDebug()
-
-	/**
-	 * Clear the calculation engine debug log
-	 */
-	public function clearLog() {
-		$this->_debugLog = array();
-	}	//	function flushLogger()
-
-	/**
-	 * Return the calculation engine debug log
-	 *
-	 * @return  string[]
-	 */
-	public function getLog() {
-		return $this->_debugLog;
-	}	//	function flushLogger()
-
-}	//	class PHPExcel_CalcEngine_Logger
+    /**
+     * Clear the calculation engine debug log
+     */
+    public function clearLog()
+    {
+        $this->_debugLog = array();
+    }
 
+    /**
+     * Return the calculation engine debug log
+     *
+     * @return  string[]
+     */
+    public function getLog()
+    {
+        return $this->_debugLog;
+    }
+}
diff --git a/Classes/PHPExcel/Calculation/Token/Stack.php b/Classes/PHPExcel/Calculation/Token/Stack.php
index b91794e4..2b27bb8e 100644
--- a/Classes/PHPExcel/Calculation/Token/Stack.php
+++ b/Classes/PHPExcel/Calculation/Token/Stack.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * PHPExcel
+ * PHPExcel_Calculation_Token_Stack
  *
  * Copyright (c) 2006 - 2015 PHPExcel
  *
@@ -21,95 +21,90 @@
  * @category   PHPExcel
  * @package    PHPExcel_Calculation
  * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version	##VERSION##, ##DATE##
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
  */
+class PHPExcel_Calculation_Token_Stack
+{
+    /**
+     *  The parser stack for formulae
+     *
+     *  @var mixed[]
+     */
+    private $_stack = array();
 
+    /**
+     *  Count of entries in the parser stack
+     *
+     *  @var integer
+     */
+    private $_count = 0;
 
-/**
- * PHPExcel_Calculation_Token_Stack
- *
- * @category	PHPExcel_Calculation_Token_Stack
- * @package		PHPExcel_Calculation
- * @copyright	Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_Calculation_Token_Stack {
+    /**
+     * Return the number of entries on the stack
+     *
+     * @return  integer
+     */
+    public function count()
+    {
+        return $this->_count;
+    }
 
-	/**
-	 *  The parser stack for formulae
-	 *
-	 *  @var mixed[]
-	 */
-	private $_stack = array();
+    /**
+     * Push a new entry onto the stack
+     *
+     * @param  mixed  $type
+     * @param  mixed  $value
+     * @param  mixed  $reference
+     */
+    public function push($type, $value, $reference = null)
+    {
+        $this->_stack[$this->_count++] = array(
+            'type'        => $type,
+            'value'        => $value,
+            'reference'    => $reference
+        );
+        if ($type == 'Function') {
+            $localeFunction = PHPExcel_Calculation::_localeFunc($value);
+            if ($localeFunction != $value) {
+                $this->_stack[($this->_count - 1)]['localeValue'] = $localeFunction;
+            }
+        }
+    }
 
-	/**
-	 *  Count of entries in the parser stack
-	 *
-	 *  @var integer
-	 */
-	private $_count = 0;
+    /**
+     * Pop the last entry from the stack
+     *
+     * @return  mixed
+     */
+    public function pop()
+    {
+        if ($this->_count > 0) {
+            return $this->_stack[--$this->_count];
+        }
+        return null;
+    }
 
+    /**
+     * Return an entry from the stack without removing it
+     *
+     * @param   integer  $n  number indicating how far back in the stack we want to look
+     * @return  mixed
+     */
+    public function last($n = 1)
+    {
+        if ($this->_count - $n < 0) {
+            return null;
+        }
+        return $this->_stack[$this->_count - $n];
+    }
 
-	/**
-	 * Return the number of entries on the stack
-	 *
-	 * @return  integer
-	 */
-	public function count() {
-		return $this->_count;
-	}	//	function count()
-
-	/**
-	 * Push a new entry onto the stack
-	 *
-	 * @param  mixed  $type
-	 * @param  mixed  $value
-	 * @param  mixed  $reference
-	 */
-	public function push($type, $value, $reference = NULL) {
-		$this->_stack[$this->_count++] = array('type'		=> $type,
-											   'value'		=> $value,
-											   'reference'	=> $reference
-											  );
-		if ($type == 'Function') {
-			$localeFunction = PHPExcel_Calculation::_localeFunc($value);
-			if ($localeFunction != $value) {
-				$this->_stack[($this->_count - 1)]['localeValue'] = $localeFunction;
-			}
-		}
-	}	//	function push()
-
-	/**
-	 * Pop the last entry from the stack
-	 *
-	 * @return  mixed
-	 */
-	public function pop() {
-		if ($this->_count > 0) {
-			return $this->_stack[--$this->_count];
-		}
-		return NULL;
-	}	//	function pop()
-
-	/**
-	 * Return an entry from the stack without removing it
-	 *
-	 * @param   integer  $n  number indicating how far back in the stack we want to look
-	 * @return  mixed
-	 */
-	public function last($n = 1) {
-		if ($this->_count - $n < 0) {
-			return NULL;
-		}
-		return $this->_stack[$this->_count - $n];
-	}	//	function last()
-
-	/**
-	 * Clear the stack
-	 */
-	function clear() {
-		$this->_stack = array();
-		$this->_count = 0;
-	}
-
-}	//	class PHPExcel_Calculation_Token_Stack
+    /**
+     * Clear the stack
+     */
+    function clear()
+    {
+        $this->_stack = array();
+        $this->_count = 0;
+    }
+}