/branches/v1.6.4/Classes/PHPExcel/Writer/Excel2007/ContentTypes.php

<?php

/**

 * PHPExcel

 *

 * Copyright (c) 2006 - 2008 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 - 2008 PHPExcel (http://www.codeplex.com/PHPExcel)

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

 * @version    ##VERSION##, ##DATE##

 */





/** PHPExcel */

require_once 'PHPExcel.php';



/** PHPExcel_Writer_Excel2007 */

require_once 'PHPExcel/Writer/Excel2007.php';



/** PHPExcel_Writer_Excel2007_WriterPart */

require_once 'PHPExcel/Writer/Excel2007/WriterPart.php';



/** PHPExcel_Shared_File */

require_once 'PHPExcel/Shared/File.php';



/** PHPExcel_Shared_XMLWriter */

require_once 'PHPExcel/Shared/XMLWriter.php';





/**

 * PHPExcel_Writer_Excel2007_ContentTypes

 *

 * @category   PHPExcel

 * @package    PHPExcel_Writer_Excel2007

 * @copyright  Copyright (c) 2006 - 2008 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

	 * @return 	string 						XML Output

	 * @throws 	Exception

	 */

	public function writeContentTypes(PHPExcel $pPHPExcel = null)

	{

		// Create XML writer

		$objWriter = null;

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

			$objWriter = new PHPExcel_Shared_XMLWriter(PHPExcel_Shared_XMLWriter::STORAGE_DISK);

		} 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'

			);



			// 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

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

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

					$this->_writeOverrideContentType(

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

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

					if (!isset( $aMediaContentTypes[strtolower($this->getParentWriter()->getDrawingHashTable()->getByIndex($i)->getExtension())]) ) {

						$aMediaContentTypes[strtolower($this->getParentWriter()->getDrawingHashTable()->getByIndex($i)->getExtension())] = $this->_getImageMimeType( $this->getParentWriter()->getDrawingHashTable()->getByIndex($i)->getPath() );



						$this->_writeDefaultContentType(

							$objWriter, strtolower($this->getParentWriter()->getDrawingHashTable()->getByIndex($i)->getExtension()), $aMediaContentTypes[strtolower($this->getParentWriter()->getDrawingHashTable()->getByIndex($i)->getExtension())]

						);

					}

				}

			}

			$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.");

		}

	}

}