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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** 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 "spotlightlocatorfilter.h"
#include <utils/qtcassert.h>
#include <QMutex>
#include <QMutexLocker>
#include <QWaitCondition>
#include <Foundation/NSArray.h>
#include <Foundation/NSDictionary.h>
#include <Foundation/NSMetadata.h>
#include <Foundation/NSNotification.h>
#include <Foundation/NSOperation.h>
#include <Foundation/NSPredicate.h>
#include <CoreServices/CoreServices.h>
namespace Core {
namespace Internal {
// #pragma mark -- SpotlightIterator
class SpotlightIterator : public BaseFileFilter::Iterator
{
public:
SpotlightIterator(const QString &expression);
~SpotlightIterator();
void toFront();
bool hasNext() const;
QString next();
QString filePath() const;
QString fileName() const;
private:
void ensureNext();
NSMetadataQuery *m_query;
id<NSObject> m_progressObserver;
id<NSObject> m_finishObserver;
QMutex m_mutex;
QWaitCondition m_waitForItems;
NSMutableArray *m_queue;
QStringList m_filePaths;
QStringList m_fileNames;
int m_index;
unsigned int m_queueIndex;
bool m_finished;
};
SpotlightIterator::SpotlightIterator(const QString &expression)
: m_index(-1),
m_queueIndex(-1),
m_finished(false)
{
@autoreleasepool {
NSPredicate *predicate = [NSPredicate predicateWithFormat:expression.toNSString()];
m_query = [[NSMetadataQuery alloc] init];
m_query.predicate = predicate;
m_query.searchScopes = [NSArray arrayWithObject:NSMetadataQueryLocalComputerScope];
m_queue = [[NSMutableArray alloc] init];
m_progressObserver = [[[NSNotificationCenter defaultCenter]
addObserverForName:NSMetadataQueryGatheringProgressNotification
object:m_query
queue:nil
usingBlock:^(NSNotification *note) {
[m_query disableUpdates];
QMutexLocker lock(&m_mutex); Q_UNUSED(lock)
[m_queue addObjectsFromArray:[note.userInfo objectForKey:(NSString *)kMDQueryUpdateAddedItems]];
[m_query enableUpdates];
m_waitForItems.wakeAll();
}] retain];
m_finishObserver = [[[NSNotificationCenter defaultCenter]
addObserverForName:NSMetadataQueryDidFinishGatheringNotification
object:m_query
queue:nil
usingBlock:^(NSNotification *) {
QMutexLocker lock(&m_mutex); Q_UNUSED(lock)
m_finished = true;
m_waitForItems.wakeAll();
}] retain];
[m_query startQuery];
}
}
SpotlightIterator::~SpotlightIterator()
{
[[NSNotificationCenter defaultCenter] removeObserver:m_progressObserver];
[m_progressObserver release];
[[NSNotificationCenter defaultCenter] removeObserver:m_finishObserver];
[m_finishObserver release];
[m_query stopQuery];
[m_query release];
[m_queue release];
}
void SpotlightIterator::toFront()
{
m_index = -1;
}
bool SpotlightIterator::hasNext() const
{
auto that = const_cast<SpotlightIterator *>(this);
that->ensureNext();
return (m_index + 1 < m_filePaths.size());
}
QString SpotlightIterator::next()
{
ensureNext();
++m_index;
QTC_ASSERT(m_index < m_filePaths.size(), return QString());
return m_filePaths.at(m_index);
}
QString SpotlightIterator::filePath() const
{
QTC_ASSERT(m_index < m_filePaths.size(), return QString());
return m_filePaths.at(m_index);
}
QString SpotlightIterator::fileName() const
{
QTC_ASSERT(m_index < m_fileNames.size(), return QString());
return m_fileNames.at(m_index);
}
void SpotlightIterator::ensureNext()
{
if (m_index + 1 < m_filePaths.size()) // nothing to do
return;
if (m_index >= 10000) // limit the amount of data that is passed on
return;
@autoreleasepool {
// check if there are items in the queue, otherwise wait for some
m_mutex.lock();
bool itemAvailable = (m_queueIndex + 1 < m_queue.count);
if (!itemAvailable && !m_finished) {
m_waitForItems.wait(&m_mutex);
itemAvailable = (m_queueIndex + 1 < m_queue.count);
}
if (itemAvailable) {
++m_queueIndex;
NSMetadataItem *item = [m_queue objectAtIndex:m_queueIndex];
m_filePaths.append(QString::fromNSString([item valueForAttribute:NSMetadataItemPathKey]));
m_fileNames.append(QString::fromNSString([item valueForAttribute:NSMetadataItemFSNameKey]));
}
m_mutex.unlock();
}
}
// #pragma mark -- SpotlightLocatorFilter
SpotlightLocatorFilter::SpotlightLocatorFilter()
{
setId("SpotlightFileNamesLocatorFilter");
setDisplayName(tr("Spotlight File Name Index"));
setShortcutString(QLatin1String("md"));
}
void SpotlightLocatorFilter::prepareSearch(const QString &entry)
{
if (entry.isEmpty()) {
setFileIterator(new BaseFileFilter::ListIterator(QStringList()));
} else {
// only pass the file name part to spotlight to allow searches like "somepath/*foo"
int lastSlash = entry.lastIndexOf(QLatin1Char('/'));
QString quoted = entry.mid(lastSlash + 1);
quoted.replace(QLatin1Char('\\'), QLatin1String("\\\\"))
.replace(QLatin1Char('\''), QLatin1String("\\\'"))
.replace(QLatin1Char('\"'), QLatin1String("\\\""));
setFileIterator(new SpotlightIterator(
QString::fromLatin1("kMDItemFSName like%1 \"*%2*\"")
.arg(caseSensitivity(entry) == Qt::CaseInsensitive ? QLatin1String("[c]")
: QString())
.arg(quoted)));
}
BaseFileFilter::prepareSearch(entry);
}
void SpotlightLocatorFilter::refresh(QFutureInterface<void> &future)
{
Q_UNUSED(future)
}
} // Internal
} // Core
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