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/* --------------------------------------------------------------
FilenameStringType.php 2017-03-03
Gambio GmbH
http://www.gambio.de
Copyright (c) 2017 Gambio GmbH
Released under the GNU General Public License (Version 2)
[http://www.gnu.org/licenses/gpl-2.0.html]
--------------------------------------------------------------
*/
/**
* Class FilenameStringType
*
* @category System
* @package Shared
* @subpackage FileSystem
*/
class FilenameStringType extends StringType
{
/**
* FilenameStringType constructor.
*
* @param string $filename
*
* @throws InvalidArgumentException if $filename contains invalid characters
*/
public function __construct($filename)
{
parent::__construct($filename);
$this->_validateFilename($filename);
}
/**
* Validates file name.
*
* @param string $filename
*
* @throws InvalidArgumentException if $filename contains invalid characters
*
* @return FilenameStringType Same instance for chained method calls.
*/
protected function _validateFilename($filename)
{
// backup locale setting
$originalLocales = explode(';', setlocale(LC_ALL, 0));
// change locale to multibyte character charset allowing characters like umlauts
// en_US.UTF8 should always be available
setlocale(LC_ALL, 'en_US.UTF8');
if($filename !== basename((string)$filename))
{
throw new InvalidArgumentException('Filename "' . (string)$filename . '" is not valid');
}
//Recover to the default setting
//these will be returned by setlocale(LC_ALL, 0), but don't exist anymore.
$skipConstants = [
'LC_PAPER',
'LC_NAME',
'LC_ADDRESS',
'LC_TELEPHONE',
'LC_MEASUREMENT',
'LC_IDENTIFICATION'
];
foreach($originalLocales as $localeSetting)
{
if(strpos($localeSetting, '=') !== false)
{
list ($category, $locale) = explode('=', $localeSetting);
}
else
{
$category = 'LC_ALL';
$locale = $localeSetting;
}
if(!in_array($category, $skipConstants))
{
setlocale(constant($category), $locale); //Using strings is deprecated.
}
}
return $this;
}
}