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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
* @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_IWriter */
require_once 'PHPPowerPoint/Writer/IWriter.php';
/** PHPPowerPoint_IReader */
require_once 'PHPPowerPoint/Reader/IReader.php';
/**
* PHPPowerPoint_IOFactory
*
* @category PHPPowerPoint
* @package PHPPowerPoint
* @copyright Copyright (c) 2009 - 2010 PHPPowerPoint (http://www.codeplex.com/PHPPowerPoint)
*/
class PHPPowerPoint_IOFactory
{
/**
* Search locations
*
* @var array
*/
private static $_searchLocations = array(
array( 'type' => 'IWriter', 'path' => 'PHPPowerPoint/Writer/{0}.php', 'class' => 'PHPPowerPoint_Writer_{0}' ),
array( 'type' => 'IReader', 'path' => 'PHPPowerPoint/Reader/{0}.php', 'class' => 'PHPPowerPoint_Reader_{0}' )
);
/**
* Autoresolve classes
*
* @var array
*/
private static $_autoResolveClasses = array(
'Serialized'
);
/**
* Private constructor for PHPPowerPoint_IOFactory
*/
private function __construct() { }
/**
* Get search locations
*
* @return array
*/
public static function getSearchLocations() {
return self::$_searchLocations;
}
/**
* Set search locations
*
* @param array $value
* @throws Exception
*/
public static function setSearchLocations($value) {
if (is_array($value)) {
self::$_searchLocations = $value;
} else {
throw new Exception('Invalid parameter passed.');
}
}
/**
* Add search location
*
* @param string $type Example: IWriter
* @param string $location Example: PHPPowerPoint/Writer/{0}.php
* @param string $classname Example: PHPPowerPoint_Writer_{0}
*/
public static function addSearchLocation($type = '', $location = '', $classname = '') {
self::$_searchLocations[] = array( 'type' => $type, 'path' => $location, 'class' => $classname );
}
/**
* Create PHPPowerPoint_Writer_IWriter
*
* @param PHPPowerPoint $PHPPowerPoint
* @param string $writerType Example: PowerPoint2007
* @return PHPPowerPoint_Writer_IWriter
*/
public static function createWriter(PHPPowerPoint $PHPPowerPoint, $writerType = '') {
// Search type
$searchType = 'IWriter';
// Include class
foreach (self::$_searchLocations as $searchLocation) {
if ($searchLocation['type'] == $searchType) {
$className = str_replace('{0}', $writerType, $searchLocation['class']);
$classFile = str_replace('{0}', $writerType, $searchLocation['path']);
if (!class_exists($className)) {
require_once($classFile);
}
$instance = new $className($PHPPowerPoint);
if (!is_null($instance)) {
return $instance;
}
}
}
// Nothing found...
throw new Exception("No $searchType found for type $writerType");
}
/**
* Create PHPPowerPoint_Reader_IReader
*
* @param string $readerType Example: PowerPoint2007
* @return PHPPowerPoint_Reader_IReader
*/
public static function createReader($readerType = '') {
// Search type
$searchType = 'IReader';
// Include class
foreach (self::$_searchLocations as $searchLocation) {
if ($searchLocation['type'] == $searchType) {
$className = str_replace('{0}', $readerType, $searchLocation['class']);
$classFile = str_replace('{0}', $readerType, $searchLocation['path']);
if (!class_exists($className)) {
require_once($classFile);
}
$instance = new $className();
if (!is_null($instance)) {
return $instance;
}
}
}
// Nothing found...
throw new Exception("No $searchType found for type $readerType");
}
/**
* Loads PHPPowerPoint from file using automatic PHPPowerPoint_Reader_IReader resolution
*
* @param string $pFileName
* @return PHPPowerPoint
* @throws Exception
*/
public static function load($pFilename) {
// Try loading using self::$_autoResolveClasses
foreach (self::$_autoResolveClasses as $autoResolveClass) {
$reader = self::createReader($autoResolveClass);
if ($reader->canRead($pFilename)) {
return $reader->load($pFilename);
}
}
throw new Exception("Could not automatically determine PHPPowerPoint_Reader_IReader for file.");
}
}
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