/**
* helper method to open a file handle
*
* @param string $file
* @param string $mode
* @return resource
* @throws \stubbles\streams\StreamException
*/
protected function openFile(string $file, string $mode)
{
$fp = @fopen($file, $mode);
if (false === $fp) {
throw new StreamException('Can not open file ' . $file . ' with mode ' . $mode . ': ' . str_replace('fopen(' . $file . '): ', '', lastErrorMessage()));
}
return $fp;
}
/**
* return current position
*
* @return int
* @throws \LogicException
* @throws \stubbles\streams\StreamException
*/
public function tell() : int
{
if (null === $this->handle) {
throw new \LogicException('Can not read from closed input stream.');
}
$position = @ftell($this->handle);
if (false === $position) {
throw new StreamException('Can not read current position in file: ' . lastErrorMessage('unknown error'));
}
return $position;
}