#include <QDataStream>
#include "encodingdetector.h"
#include <looqsgeneralexception.h>
EncodingDetector::EncodingDetector()
{
}

QString EncodingDetector::detectEncoding(const QByteArray &data) const
{
	uchardet_t detector = uchardet_new();
	if(uchardet_handle_data(detector, data.data(), data.size()) != 0)
	{
		uchardet_delete(detector);
		throw LooqsGeneralException("Decoder failed");
	}
	uchardet_data_end(detector);
	QString encoding = uchardet_get_charset(detector);
	uchardet_delete(detector);
	return encoding;
}
QString EncodingDetector::detectEncoding(QDataStream &s) const
{
	uchardet_t detector = uchardet_new();

	char buffer[4096];
	int n;
	while((n = s.readRawData(buffer, sizeof(buffer))) > 0)
	{
		if(uchardet_handle_data(detector, buffer, n) != 0)
		{
			uchardet_delete(detector);

			throw LooqsGeneralException("Decoder failed");
		}
	}
	if(n == -1)
	{
		uchardet_delete(detector);
		throw LooqsGeneralException("Read failed");
	}
	uchardet_data_end(detector);
	QString encoding = uchardet_get_charset(detector);
	uchardet_delete(detector);
	return encoding;
}