1// Copyright (C) 2016 The Qt Company Ltd.
2// Copyright (C) 2015 Klaralvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author David Faure <david.faure@kdab.com>
3// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
4
5#ifndef QMIMEDATABASE_P_H
6#define QMIMEDATABASE_P_H
7
8//
9// W A R N I N G
10// -------------
11//
12// This file is not part of the Qt API. It exists purely as an
13// implementation detail. This header file may change from version to
14// version without notice, or even be removed.
15//
16// We mean it.
17//
18
19#include "qmimedatabase.h"
20#include "qmimetype.h"
21
22QT_REQUIRE_CONFIG(mimetype);
23
24#include "qmimetype_p.h"
25#include "qmimeglobpattern_p.h"
26
27#include <QtCore/qelapsedtimer.h>
28#include <QtCore/qlist.h>
29#include <QtCore/qmutex.h>
30
31#include <vector>
32#include <memory>
33
34QT_BEGIN_NAMESPACE
35
36class QFileInfo;
37class QIODevice;
38class QMimeDatabase;
39class QMimeProviderBase;
40
41class QMimeDatabasePrivate
42{
43public:
44 Q_DISABLE_COPY_MOVE(QMimeDatabasePrivate)
45
46 QMimeDatabasePrivate();
47 ~QMimeDatabasePrivate();
48
49 static QMimeDatabasePrivate *instance();
50
51 const QString &defaultMimeType() const { return m_defaultMimeType; }
52
53 bool inherits(const QString &mime, const QString &parent);
54
55 QList<QMimeType> allMimeTypes();
56
57 QString resolveAlias(const QString &nameOrAlias);
58 QStringList parents(const QString &mimeName);
59 QMimeType mimeTypeForName(const QString &nameOrAlias);
60 QMimeType mimeTypeForFileNameAndData(const QString &fileName, QIODevice *device);
61 QMimeType mimeTypeForFileExtension(const QString &fileName);
62 QMimeType mimeTypeForData(QIODevice *device);
63 QMimeType mimeTypeForFile(const QString &fileName, const QFileInfo &fileInfo, QMimeDatabase::MatchMode mode);
64 QMimeType findByData(const QByteArray &data, int *priorityPtr);
65 QStringList mimeTypeForFileName(const QString &fileName);
66 QMimeGlobMatchResult findByFileName(const QString &fileName);
67
68 // API for QMimeType. Takes care of locking the mutex.
69 void loadMimeTypePrivate(QMimeTypePrivate &mimePrivate);
70 void loadGenericIcon(QMimeTypePrivate &mimePrivate);
71 void loadIcon(QMimeTypePrivate &mimePrivate);
72 QStringList mimeParents(const QString &mimeName);
73 QStringList listAliases(const QString &mimeName);
74 bool mimeInherits(const QString &mime, const QString &parent);
75
76private:
77 using Providers = std::vector<std::unique_ptr<QMimeProviderBase>>;
78 const Providers &providers();
79 bool shouldCheck();
80 void loadProviders();
81 QString fallbackParent(const QString &mimeTypeName) const;
82
83 const QString m_defaultMimeType;
84 mutable Providers m_providers;
85 QElapsedTimer m_lastCheck;
86
87public:
88 QMutex mutex;
89};
90
91QT_END_NAMESPACE
92
93#endif // QMIMEDATABASE_P_H
94

source code of qtbase/src/corelib/mimetypes/qmimedatabase_p.h