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Viewing changes to Source/WebCore/platform/network/qt/QtMIMETypeSniffer.cpp

  • Committer: Package Import Robot
  • Author(s): Jonathan Riddell
  • Date: 2013-02-18 14:24:18 UTC
  • Revision ID: package-import@ubuntu.com-20130218142418-eon0jmjg3nj438uy
Tags: upstream-2.3
Import upstream version 2.3

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Source/WebCore/platform/network/qt/QtMIMETypeSniffer.cpp
 
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/*
 
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    Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies)
 
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    This library is free software; you can redistribute it and/or
 
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    modify it under the terms of the GNU Library General Public
 
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    License as published by the Free Software Foundation; either
 
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    version 2 of the License, or (at your option) any later version.
 
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    This library is distributed in the hope that it will be useful,
 
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
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    Library General Public License for more details.
 
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    You should have received a copy of the GNU Library General Public License
 
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    along with this library; see the file COPYING.LIB.  If not, write to
 
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    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 
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    Boston, MA 02110-1301, USA.
 
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*/
 
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#include "config.h"
 
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#include "QtMIMETypeSniffer.h"
 
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#include "MIMESniffing.h"
 
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#include <QCoreApplication>
 
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#include <QNetworkReply>
 
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QtMIMETypeSniffer::QtMIMETypeSniffer(QNetworkReply* reply, const QString& advertisedMimeType, bool isSupportedImageType)
 
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    : QObject(0)
 
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    , m_reply(reply)
 
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    , m_mimeType(advertisedMimeType)
 
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    , m_sniffer(advertisedMimeType.toLatin1().constData(), isSupportedImageType)
 
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    , m_isFinished(false)
 
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{
 
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    m_isFinished = !m_sniffer.isValid() || sniff();
 
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    if (m_isFinished)
 
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        return;
 
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    connect(m_reply, SIGNAL(readyRead()), this, SLOT(trySniffing()));
 
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    connect(m_reply, SIGNAL(finished()), this, SLOT(trySniffing()));
 
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}
 
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bool QtMIMETypeSniffer::sniff()
 
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{
 
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    // See QNetworkReplyWrapper::setFinished().
 
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    const bool isReplyFinished = m_reply->property("_q_isFinished").toBool();
 
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    if (!isReplyFinished && m_reply->bytesAvailable() < m_sniffer.dataSize())
 
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        return false;
 
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    QByteArray data = m_reply->peek(m_sniffer.dataSize());
 
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    const char* sniffedMimeType = m_sniffer.sniff(data.constData(), data.size());
 
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    if (sniffedMimeType)
 
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        m_mimeType = QString::fromLatin1(sniffedMimeType);
 
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    return true;
 
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}
 
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void QtMIMETypeSniffer::trySniffing()
 
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{
 
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    if (!sniff())
 
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        return;
 
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    m_reply->disconnect(this);
 
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    QCoreApplication::removePostedEvents(this, QEvent::MetaCall);
 
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    m_isFinished = true;
 
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    emit finished();
 
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}