/**
* Detect current file encoding if ForceEncodingDetection is set to true or encoding parameter is null
*/
protected function detectEncoding()
{
$this->detectedEncoding = $this->dialect->getEncoding();
if ($this->isFileOpened() && ($this->dialect->getForceEncodingDetection() || empty($this->detectedEncoding))) {
//only read the 100 first lines to detect encoding to improve performance
$text = '';
$line = 0;
while (!feof($this->getFileHandler()) && $line <= 100) {
$text .= fgets($this->getFileHandler());
$line++;
}
if ($text !== false) {
$this->detectedEncoding = Converter::detectEncoding($text, $this->dialect->getEncoding());
}
}
}
