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diff --git a/src/corelib/mimetypes/qmimeprovider_p.h b/src/corelib/mimetypes/qmimeprovider_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QMIMEPROVIDER_P_H
+#define QMIMEPROVIDER_P_H
+
+#include <QtCore/qdatetime.h>
+#include "qmimedatabase_p.h"
+#include <QtCore/qset.h>
+
+QT_BEGIN_NAMESPACE
+
+class QMimeMagicRuleMatcher;
+
+class QMimeProviderBase
+{
+public:
+    QMimeProviderBase(QMimeDatabasePrivate *db);
+    virtual ~QMimeProviderBase() {}
+
+    virtual bool isValid() = 0;
+    virtual QMimeType mimeTypeForName(const QString &name) = 0;
+    virtual QStringList findByFileName(const QString &fileName, QString *foundSuffix) = 0;
+    virtual QStringList parents(const QString &mime) = 0;
+    virtual QString resolveAlias(const QString &name) = 0;
+    virtual QMimeType findByMagic(const QByteArray &data, int *accuracyPtr) = 0;
+    virtual QList<QMimeType> allMimeTypes() = 0;
+    virtual void loadMimeTypePrivate(QMimeTypePrivate &) {}
+    virtual void loadIcon(QMimeTypePrivate &) {}
+    virtual void loadGenericIcon(QMimeTypePrivate &) {}
+
+    QMimeDatabasePrivate *m_db;
+protected:
+    bool shouldCheck();
+    QDateTime m_lastCheck;
+};
+
+/*
+   Parses the files 'mime.cache' and 'types' on demand
+ */
+class QMimeBinaryProvider : public QMimeProviderBase
+{
+public:
+    QMimeBinaryProvider(QMimeDatabasePrivate *db);
+    virtual ~QMimeBinaryProvider();
+
+    virtual bool isValid();
+    virtual QMimeType mimeTypeForName(const QString &name);
+    virtual QStringList findByFileName(const QString &fileName, QString *foundSuffix);
+    virtual QStringList parents(const QString &mime);
+    virtual QString resolveAlias(const QString &name);
+    virtual QMimeType findByMagic(const QByteArray &data, int *accuracyPtr);
+    virtual QList<QMimeType> allMimeTypes();
+    virtual void loadMimeTypePrivate(QMimeTypePrivate &);
+    virtual void loadIcon(QMimeTypePrivate &);
+    virtual void loadGenericIcon(QMimeTypePrivate &);
+
+private:
+    struct CacheFile;
+
+    void matchGlobList(QMimeGlobMatchResult &result, CacheFile *cacheFile, int offset, const QString &fileName);
+    bool matchSuffixTree(QMimeGlobMatchResult &result, CacheFile *cacheFile, int numEntries, int firstOffset, const QString &fileName, int charPos, bool caseSensitiveCheck);
+    bool matchMagicRule(CacheFile *cacheFile, int numMatchlets, int firstOffset, const QByteArray &data);
+    QString iconForMime(CacheFile *cacheFile, int posListOffset, const QByteArray &inputMime);
+    void loadMimeTypeList();
+    void checkCache();
+
+    class CacheFileList : public QList<CacheFile *>
+    {
+    public:
+        CacheFile *findCacheFile(const QString &fileName) const;
+        bool checkCacheChanged();
+    };
+    CacheFileList m_cacheFiles;
+    QStringList m_cacheFileNames;
+    QSet<QString> m_mimetypeNames;
+    bool m_mimetypeListLoaded;
+};
+
+/*
+   Parses the raw XML files (slower)
+ */
+class QMimeXMLProvider : public QMimeProviderBase
+{
+public:
+    QMimeXMLProvider(QMimeDatabasePrivate *db);
+
+    virtual bool isValid();
+    virtual QMimeType mimeTypeForName(const QString &name);
+    virtual QStringList findByFileName(const QString &fileName, QString *foundSuffix);
+    virtual QStringList parents(const QString &mime);
+    virtual QString resolveAlias(const QString &name);
+    virtual QMimeType findByMagic(const QByteArray &data, int *accuracyPtr);
+    virtual QList<QMimeType> allMimeTypes();
+
+    bool load(const QString &fileName, QString *errorMessage);
+
+    // Called by the mimetype xml parser
+    void addMimeType(const QMimeType &mt);
+    void addGlobPattern(const QMimeGlobPattern &glob);
+    void addParent(const QString &child, const QString &parent);
+    void addAlias(const QString &alias, const QString &name);
+    void addMagicMatcher(const QMimeMagicRuleMatcher &matcher);
+
+private:
+    void ensureLoaded();
+    void load(const QString &fileName);
+
+    bool m_loaded;
+
+    typedef QHash<QString, QMimeType> NameMimeTypeMap;
+    NameMimeTypeMap m_nameMimeTypeMap;
+
+    typedef QHash<QString, QString> AliasHash;
+    AliasHash m_aliases;
+
+    typedef QHash<QString, QStringList> ParentsHash;
+    ParentsHash m_parents;
+    QMimeAllGlobPatterns m_mimeTypeGlobs;
+
+    QList<QMimeMagicRuleMatcher> m_magicMatchers;
+    QStringList m_allFiles;
+};
+
+QT_END_NAMESPACE
+
+#endif // QMIMEPROVIDER_P_H