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/*
Copyright 2008 David Nolden <david.nolden.kdevelop@art-master.de>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "modificationrevision.h"
#include <QString>
#include <QFileInfo>
#include <serialization/indexedstring.h>
#include "modificationrevisionset.h"
#include <KTextEditor/Document>
/// @todo Listen to filesystem changes (together with the project manager)
/// and call fileModificationCache().clear(...) when a file has changed
using namespace KDevelop;
const int KDevelop::cacheModificationTimesForSeconds = 30;
QMutex fileModificationTimeCacheMutex(QMutex::Recursive);
struct FileModificationCache
{
QDateTime m_readTime;
QDateTime m_modificationTime;
};
Q_DECLARE_TYPEINFO(FileModificationCache, Q_MOVABLE_TYPE);
using FileModificationMap = QHash<KDevelop::IndexedString, FileModificationCache>;
FileModificationMap& fileModificationCache()
{
static FileModificationMap cache;
return cache;
}
using OpenDocumentRevisionsMap = QHash<KDevelop::IndexedString, int>;
OpenDocumentRevisionsMap& openDocumentsRevisionMap()
{
static OpenDocumentRevisionsMap map;
return map;
}
QDateTime fileModificationTimeCached(const IndexedString& fileName)
{
const auto currentTime = QDateTime::currentDateTime();
auto it = fileModificationCache().constFind(fileName);
if (it != fileModificationCache().constEnd()) {
///Use the cache for X seconds
if (it.value().m_readTime.secsTo(currentTime) < cacheModificationTimesForSeconds) {
return it.value().m_modificationTime;
}
}
QFileInfo fileInfo(fileName.str());
FileModificationCache data = {currentTime, fileInfo.lastModified()};
fileModificationCache().insert(fileName, data);
return data.m_modificationTime;
}
void ModificationRevision::clearModificationCache(const IndexedString& fileName)
{
///@todo Make the cache management more clever (don't clear the whole)
ModificationRevisionSet::clearCache();
QMutexLocker lock(&fileModificationTimeCacheMutex);
fileModificationCache().remove(fileName);
}
ModificationRevision ModificationRevision::revisionForFile(const IndexedString& url)
{
QMutexLocker lock(&fileModificationTimeCacheMutex);
ModificationRevision ret(fileModificationTimeCached(url));
OpenDocumentRevisionsMap::const_iterator it = openDocumentsRevisionMap().constFind(url);
if (it != openDocumentsRevisionMap().constEnd()) {
ret.revision = it.value();
}
return ret;
}
void ModificationRevision::clearEditorRevisionForFile(const KDevelop::IndexedString& url)
{
ModificationRevisionSet::clearCache(); ///@todo Make the cache management more clever (don't clear the whole)
QMutexLocker lock(&fileModificationTimeCacheMutex);
openDocumentsRevisionMap().remove(url);
}
void ModificationRevision::setEditorRevisionForFile(const KDevelop::IndexedString& url, int revision)
{
ModificationRevisionSet::clearCache(); ///@todo Make the cache management more clever (don't clear the whole)
QMutexLocker lock(&fileModificationTimeCacheMutex);
openDocumentsRevisionMap().insert(url, revision);
Q_ASSERT(revisionForFile(url).revision == revision);
}
ModificationRevision::ModificationRevision(const QDateTime& modTime, int revision_)
: modificationTime(modTime.toSecsSinceEpoch())
, revision(revision_)
{
}
bool ModificationRevision::operator <(const ModificationRevision& rhs) const
{
return modificationTime < rhs.modificationTime ||
(modificationTime == rhs.modificationTime && revision < rhs.revision);
}
bool ModificationRevision::operator ==(const ModificationRevision& rhs) const
{
return modificationTime == rhs.modificationTime && revision == rhs.revision;
}
bool ModificationRevision::operator !=(const ModificationRevision& rhs) const
{
return modificationTime != rhs.modificationTime || revision != rhs.revision;
}
QString ModificationRevision::toString() const
{
return QStringLiteral("%1 (rev %2)").arg(QDateTime::fromSecsSinceEpoch(modificationTime, Qt::LocalTime).time().toString()).arg(revision);
}
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