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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the qmake application of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QMAKEVFS_H
#define QMAKEVFS_H
#include "qmake_global.h"
#include <qiodevice.h>
#include <qhash.h>
#include <qstring.h>
#ifdef PROEVALUATOR_THREAD_SAFE
# include <qmutex.h>
#endif
#ifdef PROEVALUATOR_DUAL_VFS
# ifndef PROEVALUATOR_CUMULATIVE
# error PROEVALUATOR_DUAL_VFS requires PROEVALUATOR_CUMULATIVE
# endif
#endif
QT_BEGIN_NAMESPACE
class QMAKE_EXPORT QMakeVfs
{
public:
enum ReadResult {
ReadOk,
ReadNotFound,
ReadOtherError
};
enum VfsFlag {
VfsExecutable = 1,
VfsExact = 0,
#ifdef PROEVALUATOR_DUAL_VFS
VfsCumulative = 2,
VfsCreate = 4,
VfsCreatedOnly = 8,
#else
VfsCumulative = 0,
VfsCreate = 0,
VfsCreatedOnly = 0,
#endif
VfsAccessedOnly = 16
};
Q_DECLARE_FLAGS(VfsFlags, VfsFlag)
QMakeVfs();
int idForFileName(const QString &fn, VfsFlags flags);
QString fileNameForId(int id);
static void clearIds();
bool writeFile(int id, QIODevice::OpenMode mode, VfsFlags flags, const QString &contents, QString *errStr);
ReadResult readFile(int id, QString *contents, QString *errStr);
bool exists(const QString &fn, QMakeVfs::VfsFlags flags);
#ifndef PROEVALUATOR_FULL
void invalidateCache();
void invalidateContents();
#endif
private:
#ifdef PROEVALUATOR_THREAD_SAFE
static QMutex s_mutex;
#endif
static QAtomicInt s_fileIdCounter;
// Qt Creator's ProFile cache is a singleton to maximize its cross-project
// effectiveness (shared prf files from QtVersions).
// For this to actually work, real files need a global mapping.
// This is fine, because the namespace of real files is indeed global.
static QHash<QString, int> s_fileIdMap;
static QHash<int, QString> s_idFileMap;
#ifdef PROEVALUATOR_DUAL_VFS
# ifdef PROEVALUATOR_THREAD_SAFE
// The simple way to avoid recursing m_mutex.
QMutex m_vmutex;
# endif
// Virtual files are bound to the project context they were created in,
// so their ids need to be local as well.
// We violate that rule in lupdate (which has a non-dual VFS), but that
// does not matter, because it has only one project context anyway.
QHash<QString, int> m_virtualFileIdMap[2]; // Exact and cumulative
QHash<int, QString> m_virtualIdFileMap; // Only one map, as ids are unique across realms.
#endif
#ifndef PROEVALUATOR_FULL
# ifdef PROEVALUATOR_THREAD_SAFE
QMutex m_mutex;
# endif
QHash<int, QString> m_files;
QString m_magicMissing;
QString m_magicExisting;
#endif
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QMakeVfs::VfsFlags)
QT_END_NAMESPACE
#endif // QMAKEVFS_H
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