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diff --git a/admin/survey/excel/PHPExcel/IOFactory.php b/admin/survey/excel/PHPExcel/IOFactory.php
deleted file mode 100644
index 17a1b4f..0000000
--- a/admin/survey/excel/PHPExcel/IOFactory.php
+++ /dev/null
@@ -1,288 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 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

- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version    1.7.8, 2012-10-12

- */

-

-

-/**	PHPExcel root directory */

-if (!defined('PHPEXCEL_ROOT')) {

-	/**

-	 * @ignore

-	 */

-	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../');

-	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');

-}

-

-/**

- * PHPExcel_IOFactory

- *

- * @category   PHPExcel

- * @package    PHPExcel

- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_IOFactory

-{

-	/**

-	 * Search locations

-	 *

-	 * @var	array

-	 * @access	private

-	 * @static

-	 */

-	private static $_searchLocations = array(

-		array( 'type' => 'IWriter', 'path' => 'PHPExcel/Writer/{0}.php', 'class' => 'PHPExcel_Writer_{0}' ),

-		array( 'type' => 'IReader', 'path' => 'PHPExcel/Reader/{0}.php', 'class' => 'PHPExcel_Reader_{0}' )

-	);

-

-	/**

-	 * Autoresolve classes

-	 *

-	 * @var	array

-	 * @access	private

-	 * @static

-	 */

-	private static $_autoResolveClasses = array(

-		'Excel2007',

-		'Excel5',

-		'Excel2003XML',

-		'OOCalc',

-		'SYLK',

-		'Gnumeric',

-		'HTML',

-		'CSV',

-	);

-

-    /**

-     *	Private constructor for PHPExcel_IOFactory

-     */

-    private function __construct() { }

-

-    /**

-     * Get search locations

-     *

-	 * @static

-	 * @access	public

-     * @return	array

-     */

-	public static function getSearchLocations() {

-		return self::$_searchLocations;

-	}	//	function getSearchLocations()

-

-	/**

-	 * Set search locations

-	 *

-	 * @static

-	 * @access	public

-	 * @param	array $value

-	 * @throws	Exception

-	 */

-	public static function setSearchLocations($value) {

-		if (is_array($value)) {

-			self::$_searchLocations = $value;

-		} else {

-			throw new Exception('Invalid parameter passed.');

-		}

-	}	//	function setSearchLocations()

-

-	/**

-	 * Add search location

-	 *

-	 * @static

-	 * @access	public

-	 * @param	string $type		Example: IWriter

-	 * @param	string $location	Example: PHPExcel/Writer/{0}.php

-	 * @param	string $classname 	Example: PHPExcel_Writer_{0}

-	 */

-	public static function addSearchLocation($type = '', $location = '', $classname = '') {

-		self::$_searchLocations[] = array( 'type' => $type, 'path' => $location, 'class' => $classname );

-	}	//	function addSearchLocation()

-

-	/**

-	 * Create PHPExcel_Writer_IWriter

-	 *

-	 * @static

-	 * @access	public

-	 * @param	PHPExcel $phpExcel

-	 * @param	string  $writerType	Example: Excel2007

-	 * @return	PHPExcel_Writer_IWriter

-	 * @throws	Exception

-	 */

-	public static function createWriter(PHPExcel $phpExcel, $writerType = '') {

-		// Search type

-		$searchType = 'IWriter';

-

-		// Include class

-		foreach (self::$_searchLocations as $searchLocation) {

-			if ($searchLocation['type'] == $searchType) {

-				$className = str_replace('{0}', $writerType, $searchLocation['class']);

-

-				$instance = new $className($phpExcel);

-				if ($instance !== NULL) {

-					return $instance;

-				}

-			}

-		}

-

-		// Nothing found...

-		throw new Exception("No $searchType found for type $writerType");

-	}	//	function createWriter()

-

-	/**

-	 * Create PHPExcel_Reader_IReader

-	 *

-	 * @static

-	 * @access	public

-	 * @param	string $readerType	Example: Excel2007

-	 * @return	PHPExcel_Reader_IReader

-	 * @throws	Exception

-	 */

-	public static function createReader($readerType = '') {

-		// Search type

-		$searchType = 'IReader';

-

-		// Include class

-		foreach (self::$_searchLocations as $searchLocation) {

-			if ($searchLocation['type'] == $searchType) {

-				$className = str_replace('{0}', $readerType, $searchLocation['class']);

-

-				$instance = new $className();

-				if ($instance !== NULL) {

-					return $instance;

-				}

-			}

-		}

-

-		// Nothing found...

-		throw new Exception("No $searchType found for type $readerType");

-	}	//	function createReader()

-

-	/**

-	 * Loads PHPExcel from file using automatic PHPExcel_Reader_IReader resolution

-	 *

-	 * @static

-	 * @access public

-	 * @param 	string 		$pFileName		The name of the spreadsheet file

-	 * @return	PHPExcel

-	 * @throws	Exception

-	 */

-	public static function load($pFilename) {

-		$reader = self::createReaderForFile($pFilename);

-		return $reader->load($pFilename);

-	}	//	function load()

-

-	/**

-	 * Identify file type using automatic PHPExcel_Reader_IReader resolution

-	 *

-	 * @static

-	 * @access public

-	 * @param 	string 		$pFileName		The name of the spreadsheet file to identify

-	 * @return	string

-	 * @throws	Exception

-	 */

-	public static function identify($pFilename) {

-		$reader = self::createReaderForFile($pFilename);

-		$className = get_class($reader);

-		$classType = explode('_',$className);

-		unset($reader);

-		return array_pop($classType);

-	}	//	function identify()

-

-	/**

-	 * Create PHPExcel_Reader_IReader for file using automatic PHPExcel_Reader_IReader resolution

-	 *

-	 * @static

-	 * @access	public

-	 * @param 	string 		$pFileName		The name of the spreadsheet file

-	 * @return	PHPExcel_Reader_IReader

-	 * @throws	Exception

-	 */

-	public static function createReaderForFile($pFilename) {

-

-		// First, lucky guess by inspecting file extension

-		$pathinfo = pathinfo($pFilename);

-

-		$extensionType = NULL;

-		if (isset($pathinfo['extension'])) {

-			switch (strtolower($pathinfo['extension'])) {

-				case 'xlsx':			//	Excel (OfficeOpenXML) Spreadsheet

-				case 'xlsm':			//	Excel (OfficeOpenXML) Macro Spreadsheet (macros will be discarded)

-				case 'xltx':			//	Excel (OfficeOpenXML) Template

-				case 'xltm':			//	Excel (OfficeOpenXML) Macro Template (macros will be discarded)

-					$extensionType = 'Excel2007';

-					break;

-				case 'xls':				//	Excel (BIFF) Spreadsheet

-				case 'xlt':				//	Excel (BIFF) Template

-					$extensionType = 'Excel5';

-					break;

-				case 'ods':				//	Open/Libre Offic Calc

-				case 'ots':				//	Open/Libre Offic Calc Template

-					$extensionType = 'OOCalc';

-					break;

-				case 'slk':

-					$extensionType = 'SYLK';

-					break;

-				case 'xml':				//	Excel 2003 SpreadSheetML

-					$extensionType = 'Excel2003XML';

-					break;

-				case 'gnumeric':

-					$extensionType = 'Gnumeric';

-					break;

-				case 'htm':

-				case 'html':

-					$extensionType = 'HTML';

-					break;

-				case 'csv':

-					// Do nothing

-					// We must not try to use CSV reader since it loads

-					// all files including Excel files etc.

-					break;

-				default:

-					break;

-			}

-

-			if ($extensionType !== NULL) {

-				$reader = self::createReader($extensionType);

-				// Let's see if we are lucky

-				if (isset($reader) && $reader->canRead($pFilename)) {

-					return $reader;

-				}

-			}

-		}

-

-		// If we reach here then "lucky guess" didn't give any result

-		// Try walking through all the options in self::$_autoResolveClasses

-		foreach (self::$_autoResolveClasses as $autoResolveClass) {

-			//	Ignore our original guess, we know that won't work

-			if ($autoResolveClass !== $extensionType) {

-				$reader = self::createReader($autoResolveClass);

-				if ($reader->canRead($pFilename)) {

-					return $reader;

-				}

-			}

-		}

-

-		throw new Exception('Unable to identify a reader for this file');

-	}	//	function createReaderForFile()

-}