QtMIMETypeSniffer.cpp [plain text]
#include "config.h"
#include "QtMIMETypeSniffer.h"
#include "MIMESniffing.h"
#include <QCoreApplication>
#include <QNetworkReply>
QtMIMETypeSniffer::QtMIMETypeSniffer(QNetworkReply* reply, const QString& advertisedMimeType, bool isSupportedImageType)
: QObject(0)
, m_reply(reply)
, m_mimeType(advertisedMimeType)
, m_sniffer(advertisedMimeType.toLatin1().constData(), isSupportedImageType)
, m_isFinished(false)
{
m_isFinished = !m_sniffer.isValid() || sniff();
if (m_isFinished)
return;
connect(m_reply, SIGNAL(readyRead()), this, SLOT(trySniffing()));
connect(m_reply, SIGNAL(finished()), this, SLOT(trySniffing()));
}
bool QtMIMETypeSniffer::sniff()
{
const bool isReplyFinished = m_reply->property("_q_isFinished").toBool();
if (!isReplyFinished && m_reply->bytesAvailable() < m_sniffer.dataSize())
return false;
QByteArray data = m_reply->peek(m_sniffer.dataSize());
const char* sniffedMimeType = m_sniffer.sniff(data.constData(), data.size());
if (sniffedMimeType)
m_mimeType = QString::fromLatin1(sniffedMimeType);
return true;
}
void QtMIMETypeSniffer::trySniffing()
{
if (!sniff())
return;
m_reply->disconnect(this);
QCoreApplication::removePostedEvents(this, QEvent::MetaCall);
m_isFinished = true;
emit finished();
}