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diff --git a/admin/survey/excel/PHPExcel/Writer/Excel2007/ContentTypes.php b/admin/survey/excel/PHPExcel/Writer/Excel2007/ContentTypes.php
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@@ -0,0 +1,261 @@
+<?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_Writer_Excel2007

+ * @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_Writer_Excel2007_ContentTypes

+ *

+ * @category   PHPExcel

+ * @package    PHPExcel_Writer_Excel2007

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

+ */

+class PHPExcel_Writer_Excel2007_ContentTypes extends PHPExcel_Writer_Excel2007_WriterPart

+{

+	/**

+	 * Write content types to XML format

+	 *

+	 * @param 	PHPExcel	$pPHPExcel

+	 * @param	boolean		$includeCharts	Flag indicating if we should include drawing details for charts

+	 * @return 	string 						XML Output

+	 * @throws 	Exception

+	 */

+	public function writeContentTypes(PHPExcel $pPHPExcel = null, $includeCharts = FALSE)

+	{

+		// Create XML writer

+		$objWriter = null;

+		if ($this->getParentWriter()->getUseDiskCaching()) {

+			$objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_DISK, $this->getParentWriter()->getDiskCachingDirectory());

+		} else {

+			$objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_MEMORY);

+		}

+

+		// XML header

+		$objWriter->startDocument('1.0','UTF-8','yes');

+

+		// Types

+		$objWriter->startElement('Types');

+		$objWriter->writeAttribute('xmlns', 'http://schemas.openxmlformats.org/package/2006/content-types');

+

+			// Theme

+			$this->_writeOverrideContentType(

+				$objWriter, '/xl/theme/theme1.xml', 'application/vnd.openxmlformats-officedocument.theme+xml'

+			);

+

+			// Styles

+			$this->_writeOverrideContentType(

+				$objWriter, '/xl/styles.xml', 'application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml'

+			);

+

+			// Rels

+			$this->_writeDefaultContentType(

+				$objWriter, 'rels', 'application/vnd.openxmlformats-package.relationships+xml'

+			);

+

+			// XML

+			$this->_writeDefaultContentType(

+				$objWriter, 'xml', 'application/xml'

+			);

+

+			// VML

+			$this->_writeDefaultContentType(

+				$objWriter, 'vml', 'application/vnd.openxmlformats-officedocument.vmlDrawing'

+			);

+

+			// Workbook

+			$this->_writeOverrideContentType(

+				$objWriter, '/xl/workbook.xml', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml'

+			);

+

+			// DocProps

+			$this->_writeOverrideContentType(

+				$objWriter, '/docProps/app.xml', 'application/vnd.openxmlformats-officedocument.extended-properties+xml'

+			);

+

+			$this->_writeOverrideContentType(

+				$objWriter, '/docProps/core.xml', 'application/vnd.openxmlformats-package.core-properties+xml'

+			);

+

+			$customPropertyList = $pPHPExcel->getProperties()->getCustomProperties();

+			if (!empty($customPropertyList)) {

+				$this->_writeOverrideContentType(

+					$objWriter, '/docProps/custom.xml', 'application/vnd.openxmlformats-officedocument.custom-properties+xml'

+				);

+			}

+

+			// Worksheets

+			$sheetCount = $pPHPExcel->getSheetCount();

+			for ($i = 0; $i < $sheetCount; ++$i) {

+				$this->_writeOverrideContentType(

+					$objWriter, '/xl/worksheets/sheet' . ($i + 1) . '.xml', 'application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml'

+				);

+			}

+

+			// Shared strings

+			$this->_writeOverrideContentType(

+				$objWriter, '/xl/sharedStrings.xml', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml'

+			);

+

+			// Add worksheet relationship content types

+			$chart = 1;

+			for ($i = 0; $i < $sheetCount; ++$i) {

+				$drawings = $pPHPExcel->getSheet($i)->getDrawingCollection();

+				$drawingCount = count($drawings);

+				$chartCount = ($includeCharts) ? $pPHPExcel->getSheet($i)->getChartCount() : 0;

+

+				//	We need a drawing relationship for the worksheet if we have either drawings or charts

+				if (($drawingCount > 0) || ($chartCount > 0)) {

+					$this->_writeOverrideContentType(

+						$objWriter, '/xl/drawings/drawing' . ($i + 1) . '.xml', 'application/vnd.openxmlformats-officedocument.drawing+xml'

+					);

+				}

+

+				//	If we have charts, then we need a chart relationship for every individual chart

+				if ($chartCount > 0) {

+					for ($c = 0; $c < $chartCount; ++$c) {

+						$this->_writeOverrideContentType(

+							$objWriter, '/xl/charts/chart' . $chart++ . '.xml', 'application/vnd.openxmlformats-officedocument.drawingml.chart+xml'

+						);

+					}

+				}

+			}

+

+			// Comments

+			for ($i = 0; $i < $sheetCount; ++$i) {

+				if (count($pPHPExcel->getSheet($i)->getComments()) > 0) {

+					$this->_writeOverrideContentType(

+						$objWriter, '/xl/comments' . ($i + 1) . '.xml', 'application/vnd.openxmlformats-officedocument.spreadsheetml.comments+xml'

+					);

+				}

+			}

+

+			// Add media content-types

+			$aMediaContentTypes = array();

+			$mediaCount = $this->getParentWriter()->getDrawingHashTable()->count();

+			for ($i = 0; $i < $mediaCount; ++$i) {

+				$extension 	= '';

+				$mimeType 	= '';

+

+				if ($this->getParentWriter()->getDrawingHashTable()->getByIndex($i) instanceof PHPExcel_Worksheet_Drawing) {

+					$extension 	= strtolower($this->getParentWriter()->getDrawingHashTable()->getByIndex($i)->getExtension());

+					$mimeType 	= $this->_getImageMimeType( $this->getParentWriter()->getDrawingHashTable()->getByIndex($i)->getPath() );

+				} else if ($this->getParentWriter()->getDrawingHashTable()->getByIndex($i) instanceof PHPExcel_Worksheet_MemoryDrawing) {

+					$extension 	= strtolower($this->getParentWriter()->getDrawingHashTable()->getByIndex($i)->getMimeType());

+					$extension 	= explode('/', $extension);

+					$extension 	= $extension[1];

+

+					$mimeType 	= $this->getParentWriter()->getDrawingHashTable()->getByIndex($i)->getMimeType();

+				}

+

+				if (!isset( $aMediaContentTypes[$extension]) ) {

+						$aMediaContentTypes[$extension] = $mimeType;

+

+						$this->_writeDefaultContentType(

+							$objWriter, $extension, $mimeType

+						);

+				}

+			}

+

+			$sheetCount = $pPHPExcel->getSheetCount();

+			for ($i = 0; $i < $sheetCount; ++$i) {

+				if (count($pPHPExcel->getSheet()->getHeaderFooter()->getImages()) > 0) {

+					foreach ($pPHPExcel->getSheet()->getHeaderFooter()->getImages() as $image) {

+						if (!isset( $aMediaContentTypes[strtolower($image->getExtension())]) ) {

+							$aMediaContentTypes[strtolower($image->getExtension())] = $this->_getImageMimeType( $image->getPath() );

+

+							$this->_writeDefaultContentType(

+								$objWriter, strtolower($image->getExtension()), $aMediaContentTypes[strtolower($image->getExtension())]

+							);

+						}

+					}

+				}

+			}

+

+		$objWriter->endElement();

+

+		// Return

+		return $objWriter->getData();

+	}

+

+	/**

+	 * Get image mime type

+	 *

+	 * @param 	string	$pFile	Filename

+	 * @return 	string	Mime Type

+	 * @throws 	Exception

+	 */

+	private function _getImageMimeType($pFile = '')

+	{

+		if (PHPExcel_Shared_File::file_exists($pFile)) {

+			$image = getimagesize($pFile);

+			return image_type_to_mime_type($image[2]);

+		} else {

+			throw new Exception("File $pFile does not exist");

+		}

+	}

+

+	/**

+	 * Write Default content type

+	 *

+	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer

+	 * @param 	string 						$pPartname 		Part name

+	 * @param 	string 						$pContentType 	Content type

+	 * @throws 	Exception

+	 */

+	private function _writeDefaultContentType(PHPExcel_Shared_XMLWriter $objWriter = null, $pPartname = '', $pContentType = '')

+	{

+		if ($pPartname != '' && $pContentType != '') {

+			// Write content type

+			$objWriter->startElement('Default');

+			$objWriter->writeAttribute('Extension', 	$pPartname);

+			$objWriter->writeAttribute('ContentType', 	$pContentType);

+			$objWriter->endElement();

+		} else {

+			throw new Exception("Invalid parameters passed.");

+		}

+	}

+

+	/**

+	 * Write Override content type

+	 *

+	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer

+	 * @param 	string 						$pPartname 		Part name

+	 * @param 	string 						$pContentType 	Content type

+	 * @throws 	Exception

+	 */

+	private function _writeOverrideContentType(PHPExcel_Shared_XMLWriter $objWriter = null, $pPartname = '', $pContentType = '')

+	{

+		if ($pPartname != '' && $pContentType != '') {

+			// Write content type

+			$objWriter->startElement('Override');

+			$objWriter->writeAttribute('PartName', 		$pPartname);

+			$objWriter->writeAttribute('ContentType', 	$pContentType);

+			$objWriter->endElement();

+		} else {

+			throw new Exception("Invalid parameters passed.");

+		}

+	}

+}