/**
* Asserts the stream is writable
*
* @throws Magento_Filesystem_Exception
*/
protected function _assertWritable()
{
$this->_assertOpened();
if (false === $this->_mode->isWriteAllowed()) {
throw new Magento_Filesystem_Exception('The stream does not allow write.');
}
}
/**
* @param string $mode
*/
public function __construct($mode)
{
$searchPattern = '/(r|w|a|x|c)(b)?(\\+)?(\\d*)(f|h)?/';
preg_match($searchPattern, $mode, $ratios);
if (count($ratios) > 4 && $ratios[4]) {
$this->_ratio = (int) $ratios[4];
}
if (count($ratios) == 6) {
$this->_strategy = $ratios[5];
}
$mode = preg_replace($searchPattern, '\\1\\2\\3', $mode);
parent::__construct($mode);
}
/**
* @dataProvider onlyBModesDataProvider
* @param string $mode
*/
public function testIsBinary($mode)
{
$streamMode = new Magento_Filesystem_Stream_Mode($mode);
$this->assertTrue($streamMode->isBinary());
}