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<?php
/**
* PHPPowerPoint
*
* Copyright (c) 2009 - 2010 PHPPowerPoint
*
* 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 PHPPowerPoint
* @package PHPPowerPoint_Reader
* @copyright Copyright (c) 2009 - 2010 PHPPowerPoint (http://www.codeplex.com/PHPPowerPoint)
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
* @version 0.1.0, 2009-04-27
*/
/** PHPPowerPoint */
require_once 'PHPPowerPoint.php';
/** PHPPowerPoint_Reader_IReader */
require_once 'PHPPowerPoint/Reader/IReader.php';
/** PHPPowerPoint_Shared_File */
require_once 'PHPPowerPoint/Shared/File.php';
/**
* PHPPowerPoint_Reader_Serialized
*
* @category PHPPowerPoint
* @package PHPPowerPoint_Reader
* @copyright Copyright (c) 2009 - 2010 PHPPowerPoint (http://www.codeplex.com/PHPPowerPoint)
*/
class PHPPowerPoint_Reader_Serialized implements PHPPowerPoint_Reader_IReader
{
/**
* Can the current PHPPowerPoint_Reader_IReader read the file?
*
* @param string $pFileName
* @return boolean
*/
public function canRead($pFilename)
{
// Check if file exists
if (!file_exists($pFilename)) {
throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
}
return $this->fileSupportsUnserializePHPPowerPoint($pFilename);
}
/**
* Loads PHPPowerPoint Serialized file
*
* @param string $pFilename
* @return PHPPowerPoint
* @throws Exception
*/
public function load($pFilename)
{
// Check if file exists
if (!file_exists($pFilename)) {
throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
}
// Unserialize... First make sure the file supports it!
if (!$this->fileSupportsUnserializePHPPowerPoint($pFilename)) {
throw new Exception("Invalid file format for PHPPowerPoint_Reader_Serialized: " . $pFilename . ".");
}
return $this->_loadSerialized($pFilename);
}
/**
* Load PHPPowerPoint Serialized file
*
* @param string $pFilename
* @return PHPPowerPoint
*/
private function _loadSerialized($pFilename) {
$xmlData = simplexml_load_string(file_get_contents("zip://$pFilename#PHPPowerPoint.xml"));
$excel = unserialize(base64_decode((string)$xmlData->data));
// Update media links
for ($i = 0; $i < $excel->getSlideCount(); ++$i) {
for ($j = 0; $j < $excel->getSlide($i)->getShapeCollection()->count(); ++$j) {
if ($excel->getSlide($i)->getShapeCollection()->offsetGet($j) instanceof PHPExcl_Shape_BaseDrawing) {
$imgTemp =& $excel->getSlide($i)->getShapeCollection()->offsetGet($j);
$imgTemp->setPath('zip://' . $pFilename . '#media/' . $imgTemp->getFilename(), false);
}
}
}
return $excel;
}
/**
* Does a file support UnserializePHPPowerPoint ?
*
* @param string $pFilename
* @throws Exception
* @return boolean
*/
public function fileSupportsUnserializePHPPowerPoint($pFilename = '') {
// Check if file exists
if (!file_exists($pFilename)) {
throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
}
// File exists, does it contain PHPPowerPoint.xml?
return PHPPowerPoint_Shared_File::file_exists("zip://$pFilename#PHPPowerPoint.xml");
}
}
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