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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of jom.
**
** 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.
**
****************************************************************************/
#include "fastfileinfo.h"
#include <QtCore/QDebug>
#include <QtCore/QDir>
#include <QtCore/QHash>
#include <windows.h>
namespace NMakeFile {
static_assert(sizeof(FastFileInfo::InternalType) == sizeof(WIN32_FILE_ATTRIBUTE_DATA),
"FastFileInfo::InternalType has wrong size");
inline WIN32_FILE_ATTRIBUTE_DATA* z(FastFileInfo::InternalType &internalData)
{
return reinterpret_cast<WIN32_FILE_ATTRIBUTE_DATA*>(&internalData);
}
inline const WIN32_FILE_ATTRIBUTE_DATA* z(const FastFileInfo::InternalType &internalData)
{
return reinterpret_cast<const WIN32_FILE_ATTRIBUTE_DATA*>(&internalData);
}
static WIN32_FILE_ATTRIBUTE_DATA createInvalidFAD()
{
WIN32_FILE_ATTRIBUTE_DATA fad = {0};
fad.dwFileAttributes = INVALID_FILE_ATTRIBUTES;
return fad;
}
static QHash<QString, WIN32_FILE_ATTRIBUTE_DATA> fadHash;
FastFileInfo::FastFileInfo(const QString &fileName)
{
static const WIN32_FILE_ATTRIBUTE_DATA invalidFAD = createInvalidFAD();
*z(m_attributes) = fadHash.value(fileName, invalidFAD);
if (z(m_attributes)->dwFileAttributes != INVALID_FILE_ATTRIBUTES)
return;
static const QString longPathPrefix = QStringLiteral("\\\\?\\");
QString nativeFilePath = QDir::toNativeSeparators(QFileInfo(fileName).absoluteFilePath());
if (!nativeFilePath.startsWith(longPathPrefix))
nativeFilePath.prepend(longPathPrefix);
if (!GetFileAttributesEx(reinterpret_cast<const TCHAR*>(nativeFilePath.utf16()),
GetFileExInfoStandard, &m_attributes))
{
z(m_attributes)->dwFileAttributes = INVALID_FILE_ATTRIBUTES;
return;
}
fadHash.insert(fileName, *z(m_attributes));
}
bool FastFileInfo::exists() const
{
return z(m_attributes)->dwFileAttributes != INVALID_FILE_ATTRIBUTES;
}
FileTime FastFileInfo::lastModified() const
{
const WIN32_FILE_ATTRIBUTE_DATA *fattr = z(m_attributes);
if (fattr->dwFileAttributes == INVALID_FILE_ATTRIBUTES) {
return FileTime();
} else {
return FileTime(reinterpret_cast<const FileTime::InternalType&>(fattr->ftLastWriteTime));
}
}
void FastFileInfo::clearCacheForFile(const QString &fileName)
{
fadHash.remove(fileName);
}
} // NMakeFile
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