<?php

/**
 * PHPExcel_Writer_OpenDocument
 *
 * 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 extends PHPExcel_Writer_Abstract implements PHPExcel_Writer_IWriter
{
  /**
   * Private writer parts
   *
   * @var PHPExcel_Writer_OpenDocument_WriterPart[]
   */
  private $writerParts = array ();
  
  /**
   * Private PHPExcel
   *
   * @var PHPExcel
   */
  private $spreadSheet;
  
  /**
   * Create a new PHPExcel_Writer_OpenDocument
   *
   * @param PHPExcel $pPHPExcel          
   */
  public function __construct(PHPExcel $pPHPExcel = null)
  {
    $this->setPHPExcel ( $pPHPExcel );
    
    $writerPartsArray = array (
        'content' => 'PHPExcel_Writer_OpenDocument_Content',
        'meta' => 'PHPExcel_Writer_OpenDocument_Meta',
        'meta_inf' => 'PHPExcel_Writer_OpenDocument_MetaInf',
        'mimetype' => 'PHPExcel_Writer_OpenDocument_Mimetype',
        'settings' => 'PHPExcel_Writer_OpenDocument_Settings',
        'styles' => 'PHPExcel_Writer_OpenDocument_Styles',
        'thumbnails' => 'PHPExcel_Writer_OpenDocument_Thumbnails' 
    );
    
    foreach ( $writerPartsArray as $writer => $class )
    {
      $this->writerParts [$writer] = new $class ( $this );
    }
  }
  
  /**
   * Get writer part
   *
   * @param string $pPartName
   *          Writer part name
   * @return PHPExcel_Writer_Excel2007_WriterPart
   */
  public function getWriterPart($pPartName = '')
  {
    if ($pPartName != '' && isset ( $this->writerParts [strtolower ( $pPartName )] ))
    {
      return $this->writerParts [strtolower ( $pPartName )];
    }
    else
    {
      return null;
    }
  }
  
  /**
   * Save PHPExcel to file
   *
   * @param string $pFilename          
   * @throws PHPExcel_Writer_Exception
   */
  public function save($pFilename = null)
  {
    if (! $this->spreadSheet)
    {
      throw new PHPExcel_Writer_Exception ( 'PHPExcel object unassigned.' );
    }
    
    // garbage collect
    $this->spreadSheet->garbageCollect ();
    
    // If $pFilename is php://output or php://stdout, make it a temporary file...
    $originalFilename = $pFilename;
    if (strtolower ( $pFilename ) == 'php://output' || strtolower ( $pFilename ) == 'php://stdout')
    {
      $pFilename = @tempnam ( PHPExcel_Shared_File::sys_get_temp_dir (), 'phpxltmp' );
      if ($pFilename == '')
      {
        $pFilename = $originalFilename;
      }
    }
    
    $objZip = $this->createZip ( $pFilename );
    
    $objZip->addFromString ( 'META-INF/manifest.xml', $this->getWriterPart ( 'meta_inf' )
      ->writeManifest () );
    $objZip->addFromString ( 'Thumbnails/thumbnail.png', $this->getWriterPart ( 'thumbnails' )
      ->writeThumbnail () );
    $objZip->addFromString ( 'content.xml', $this->getWriterPart ( 'content' )
      ->write () );
    $objZip->addFromString ( 'meta.xml', $this->getWriterPart ( 'meta' )
      ->write () );
    $objZip->addFromString ( 'mimetype', $this->getWriterPart ( 'mimetype' )
      ->write () );
    $objZip->addFromString ( 'settings.xml', $this->getWriterPart ( 'settings' )
      ->write () );
    $objZip->addFromString ( 'styles.xml', $this->getWriterPart ( 'styles' )
      ->write () );
    
    // Close file
    if ($objZip->close () === false)
    {
      throw new PHPExcel_Writer_Exception ( "Could not close zip file $pFilename." );
    }
    
    // If a temporary file was used, copy it to the correct file stream
    if ($originalFilename != $pFilename)
    {
      if (copy ( $pFilename, $originalFilename ) === false)
      {
        throw new PHPExcel_Writer_Exception ( "Could not copy temporary zip file $pFilename to $originalFilename." );
      }
      @unlink ( $pFilename );
    }
  }
  
  /**
   * Create zip object
   *
   * @param string $pFilename          
   * @throws PHPExcel_Writer_Exception
   * @return ZipArchive
   */
  private function createZip($pFilename)
  {
    // Create new ZIP file and open it for writing
    $zipClass = PHPExcel_Settings::getZipClass ();
    $objZip = new $zipClass ();
    
    // Retrieve OVERWRITE and CREATE constants from the instantiated zip class
    // This method of accessing constant values from a dynamic class should work with all appropriate versions of PHP
    $ro = new ReflectionObject ( $objZip );
    $zipOverWrite = $ro->getConstant ( 'OVERWRITE' );
    $zipCreate = $ro->getConstant ( 'CREATE' );
    
    if (file_exists ( $pFilename ))
    {
      unlink ( $pFilename );
    }
    // Try opening the ZIP file
    if ($objZip->open ( $pFilename, $zipOverWrite ) !== true)
    {
      if ($objZip->open ( $pFilename, $zipCreate ) !== true)
      {
        throw new PHPExcel_Writer_Exception ( "Could not open $pFilename for writing." );
      }
    }
    
    return $objZip;
  }
  
  /**
   * Get PHPExcel object
   *
   * @return PHPExcel
   * @throws PHPExcel_Writer_Exception
   */
  public function getPHPExcel()
  {
    if ($this->spreadSheet !== null)
    {
      return $this->spreadSheet;
    }
    else
    {
      throw new PHPExcel_Writer_Exception ( 'No PHPExcel assigned.' );
    }
  }
  
  /**
   * Set PHPExcel object
   *
   * @param PHPExcel $pPHPExcel
   *          PHPExcel object
   * @throws PHPExcel_Writer_Exception
   * @return PHPExcel_Writer_Excel2007
   */
  public function setPHPExcel(PHPExcel $pPHPExcel = null)
  {
    $this->spreadSheet = $pPHPExcel;
    return $this;
  }
}
