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<?php namespace Maatwebsite\Excel\Classes;
use PHPExcel_Settings;
use PHPExcel_CachedObjectStorageFactory;
class Cache {
/**
* PHPExcel cache class
* @var string
*/
protected $class = 'PHPExcel_CachedObjectStorageFactory';
/**
* Available caching drivers
* @var array
*/
protected $available = [
'memory' => 'cache_in_memory',
'gzip' => 'cache_in_memory_gzip',
'serialized' => 'cache_in_memory_serialized',
'igbinary' => 'cache_igbinary',
'discISAM' => 'cache_to_discISAM',
'apc' => 'cache_to_apc',
'memcache' => 'cache_to_memcache',
'temp' => 'cache_to_phpTemp',
'wincache' => 'cache_to_wincache',
'sqlite' => 'cache_to_sqlite',
'sqlite3' => 'cache_to_sqlite3'
];
/**
* The name of the config file
* @var string
*/
private $configName = 'excel.cache';
/**
* Cache constructor
*/
public function __construct()
{
// Get driver and settings from the config
$this->driver = config($this->configName . '.driver', 'memory');
$this->settings = config($this->configName . '.settings', []);
// Init if caching is enabled
if ($this->isEnabled())
$this->init();
}
/**
* Init the cache
* @return void
*/
public function init()
{
// Find the cache driver
$this->findDriver();
// Set the storage driver
PHPExcel_Settings::setCacheStorageMethod($this->method, $this->settings);
}
/**
* Set the right driver
* @return void
*/
public function findDriver()
{
$property = $this->detect();
$this->method = constant($this->class . '::' . $property);
}
/**
* Detect the caching driver
* @return string $driver
*/
protected function detect()
{
// Add additional settings
$this->addAdditionalSettings();
// return the driver
return isset($this->available[$this->driver]) ? $this->available[$this->driver] : reset($this->available);
}
/**
* Add additional settings for the current driver
* @return void
*/
protected function addAdditionalSettings()
{
switch ($this->driver)
{
case 'memcache':
// Add extra memcache settings
$this->settings = array_merge($this->settings, [
'memcacheServer' => config($this->configName . '.memcache.host', 'localhost'),
'memcachePort' => config($this->configName . '.memcache.port', 11211)
]);
break;
case 'discISAM':
// Add dir
$this->settings = array_merge($this->settings, [
'dir' => config($this->configName . '.dir', storage_path('cache')),
]);
break;
}
}
/**
* Check if caching is enabled
* @return boolean
*/
public function isEnabled()
{
return config($this->configName . '.enable', true) ? true : false;
}
}