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119 lines
2.8 KiB
C++
119 lines
2.8 KiB
C++
/*
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* This file is part of the KDE project.
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* Copyright © 2010 Michael Pyne <mpyne@kde.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License version 2 as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* This is a horrifically simple implementation of KSharedDataCache that is
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* basically missing the "shared" part to it, for use on Windows or other platforms
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* that don't support POSIX.
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*/
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#include "kshareddatacache.h"
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#include <QtCore/QString>
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#include <QtCore/QByteArray>
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#include <QtCore/QCache>
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class KSharedDataCache::Private
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{
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public:
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KSharedDataCache::EvictionPolicy evictionPolicy;
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QCache<QString, QByteArray> cache;
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};
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KSharedDataCache::KSharedDataCache(const QString &cacheName,
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unsigned defaultCacheSize,
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unsigned expectedItemSize)
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: d(new Private)
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{
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d->cache.setMaxCost(defaultCacheSize);
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Q_UNUSED(cacheName);
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Q_UNUSED(expectedItemSize);
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}
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KSharedDataCache::~KSharedDataCache()
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{
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delete d;
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}
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KSharedDataCache::EvictionPolicy KSharedDataCache::evictionPolicy() const
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{
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return d->evictionPolicy;
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}
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void KSharedDataCache::setEvictionPolicy(KSharedDataCache::EvictionPolicy newPolicy)
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{
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d->evictionPolicy = newPolicy;
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}
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bool KSharedDataCache::insert(const QString &key, const QByteArray &data)
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{
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return d->cache.insert(key, new QByteArray(data));
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}
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bool KSharedDataCache::find(const QString &key, QByteArray *destination) const
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{
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QByteArray *value = d->cache.object(key);
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if (value) {
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destination = value;
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return true;
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}
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else {
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return false;
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}
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}
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void KSharedDataCache::clear()
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{
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d->cache.clear();
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}
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void KSharedDataCache::deleteCache(const QString &cacheName)
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{
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Q_UNUSED(cacheName);
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}
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bool KSharedDataCache::contains(const QString &key) const
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{
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return d->cache.contains(key);
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}
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unsigned KSharedDataCache::totalSize() const
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{
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return static_cast<unsigned>(d->cache.maxCost());
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}
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unsigned KSharedDataCache::freeSize() const
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{
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if (d->cache.totalCost() < d->cache.maxCost()) {
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return static_cast<unsigned>(d->cache.maxCost() - d->cache.totalCost());
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}
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else {
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return 0;
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}
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}
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unsigned KSharedDataCache::timestamp() const
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{
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return 0;
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}
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void KSharedDataCache::setTimestamp(unsigned newTimestamp)
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{
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}
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