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Edit File: Styles.php

<?php

/**
 * PHPExcel_Writer_OpenDocument_Styles
 *
 * 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_Writer_OpenDocument
 * @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_Writer_OpenDocument_Styles extends PHPExcel_Writer_OpenDocument_WriterPart
{
    /**
     * Write styles.xml to XML format
     *
     * @param   PHPExcel                   $pPHPExcel
     * @return  string                     XML Output
     * @throws  PHPExcel_Writer_Exception
     */
    public function write(PHPExcel $pPHPExcel = null)
    {
        if (!$pPHPExcel) {
            $pPHPExcel = $this->getParentWriter()->getPHPExcel();
        }

$objWriter = null;
        if ($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');

// Content
        $objWriter->startElement('office:document-styles');
            $objWriter->writeAttribute('xmlns:office', 'urn:oasis:names:tc:opendocument:xmlns:office:1.0');
            $objWriter->writeAttribute('xmlns:style', 'urn:oasis:names:tc:opendocument:xmlns:style:1.0');
            $objWriter->writeAttribute('xmlns:text', 'urn:oasis:names:tc:opendocument:xmlns:text:1.0');
            $objWriter->writeAttribute('xmlns:table', 'urn:oasis:names:tc:opendocument:xmlns:table:1.0');
            $objWriter->writeAttribute('xmlns:draw', 'urn:oasis:names:tc:opendocument:xmlns:drawing:1.0');
            $objWriter->writeAttribute('xmlns:fo', 'urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0');
            $objWriter->writeAttribute('xmlns:xlink', 'http://www.w3.org/1999/xlink');
            $objWriter->writeAttribute('xmlns:dc', 'http://purl.org/dc/elements/1.1/');
            $objWriter->writeAttribute('xmlns:meta', 'urn:oasis:names:tc:opendocument:xmlns:meta:1.0');
            $objWriter->writeAttribute('xmlns:number', 'urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0');
            $objWriter->writeAttribute('xmlns:presentation', 'urn:oasis:names:tc:opendocument:xmlns:presentation:1.0');
            $objWriter->writeAttribute('xmlns:svg', 'urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0');
            $objWriter->writeAttribute('xmlns:chart', 'urn:oasis:names:tc:opendocument:xmlns:chart:1.0');
            $objWriter->writeAttribute('xmlns:dr3d', 'urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0');
            $objWriter->writeAttribute('xmlns:math', 'http://www.w3.org/1998/Math/MathML');
            $objWriter->writeAttribute('xmlns:form', 'urn:oasis:names:tc:opendocument:xmlns:form:1.0');
            $objWriter->writeAttribute('xmlns:script', 'urn:oasis:names:tc:opendocument:xmlns:script:1.0');
            $objWriter->writeAttribute('xmlns:ooo', 'http://openoffice.org/2004/office');
            $objWriter->writeAttribute('xmlns:ooow', 'http://openoffice.org/2004/writer');
            $objWriter->writeAttribute('xmlns:oooc', 'http://openoffice.org/2004/calc');
            $objWriter->writeAttribute('xmlns:dom', 'http://www.w3.org/2001/xml-events');
            $objWriter->writeAttribute('xmlns:rpt', 'http://openoffice.org/2005/report');
            $objWriter->writeAttribute('xmlns:of', 'urn:oasis:names:tc:opendocument:xmlns:of:1.2');
            $objWriter->writeAttribute('xmlns:xhtml', 'http://www.w3.org/1999/xhtml');
            $objWriter->writeAttribute('xmlns:grddl', 'http://www.w3.org/2003/g/data-view#');
            $objWriter->writeAttribute('xmlns:tableooo', 'http://openoffice.org/2009/table');
            $objWriter->writeAttribute('xmlns:css3t', 'http://www.w3.org/TR/css3-text/');
            $objWriter->writeAttribute('office:version', '1.2');

$objWriter->writeElement('office:font-face-decls');
            $objWriter->writeElement('office:styles');
            $objWriter->writeElement('office:automatic-styles');
            $objWriter->writeElement('office:master-styles');
        $objWriter->endElement();

return $objWriter->getData();
    }
}