<?php

/**
 * PHPExcel_Writer_OpenDocument_Meta
 *
 * 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_Meta extends PHPExcel_Writer_OpenDocument_WriterPart
{
  /**
   * Write meta.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' );
    
    // Meta
    $objWriter->startElement ( 'office:document-meta' );
    
    $objWriter->writeAttribute ( 'xmlns:office', 'urn:oasis:names:tc:opendocument:xmlns:office: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:ooo', 'http://openoffice.org/2004/office' );
    $objWriter->writeAttribute ( 'xmlns:grddl', 'http://www.w3.org/2003/g/data-view#' );
    $objWriter->writeAttribute ( 'office:version', '1.2' );
    
    $objWriter->startElement ( 'office:meta' );
    
    $objWriter->writeElement ( 'meta:initial-creator', $pPHPExcel->getProperties ()
      ->getCreator () );
    $objWriter->writeElement ( 'dc:creator', $pPHPExcel->getProperties ()
      ->getCreator () );
    $objWriter->writeElement ( 'meta:creation-date', date ( DATE_W3C, $pPHPExcel->getProperties ()
      ->getCreated () ) );
    $objWriter->writeElement ( 'dc:date', date ( DATE_W3C, $pPHPExcel->getProperties ()
      ->getCreated () ) );
    $objWriter->writeElement ( 'dc:title', $pPHPExcel->getProperties ()
      ->getTitle () );
    $objWriter->writeElement ( 'dc:description', $pPHPExcel->getProperties ()
      ->getDescription () );
    $objWriter->writeElement ( 'dc:subject', $pPHPExcel->getProperties ()
      ->getSubject () );
    $keywords = explode ( ' ', $pPHPExcel->getProperties ()
      ->getKeywords () );
    foreach ( $keywords as $keyword )
    {
      $objWriter->writeElement ( 'meta:keyword', $keyword );
    }
    
    // <meta:document-statistic meta:table-count="XXX" meta:cell-count="XXX" meta:object-count="XXX"/>
    $objWriter->startElement ( 'meta:user-defined' );
    $objWriter->writeAttribute ( 'meta:name', 'Company' );
    $objWriter->writeRaw ( $pPHPExcel->getProperties ()
      ->getCompany () );
    $objWriter->endElement ();
    
    $objWriter->startElement ( 'meta:user-defined' );
    $objWriter->writeAttribute ( 'meta:name', 'category' );
    $objWriter->writeRaw ( $pPHPExcel->getProperties ()
      ->getCategory () );
    $objWriter->endElement ();
    
    $objWriter->endElement ();
    
    $objWriter->endElement ();
    
    return $objWriter->getData ();
  }
}
