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/*
Copyright (C) 2012 Andras Mantia <amantia@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef KEYCACHE_H
#define KEYCACHE_H
/** @brief a cache for the maildir keys (file names in cur/new folders).
* It is used to find if a file is in cur or new
*/
#include <QSet>
#include <QHash>
class KeyCache {
public:
static KeyCache *self()
{
if ( !mSelf )
mSelf = new KeyCache();
return mSelf;
}
/** Find the new and cur keys on the disk for @param dir and add them to the cache */
void addKeys( const QString& dir );
/** Refresh the new and cur keys for @param dir */
void refreshKeys( const QString& dir );
/** Add a "new" key for @param dir. */
void addNewKey( const QString& dir, const QString& key );
/** Add a "cur" key for @param dir. */
void addCurKey( const QString& dir, const QString& key );
/** Remove all keys associated with @param dir. */
void removeKey( const QString& dir, const QString& key );
/** Check if the @param key is a "cur" key in @param dir */
bool isCurKey( const QString& dir, const QString& key ) const;
/** Check if the @param key is a "new" key in @param dir */
bool isNewKey( const QString& dir, const QString& key ) const;
private:
KeyCache() {
}
QSet<QString> listNew( const QString& dir ) const;
QSet<QString> listCurrent( const QString& dir ) const;
QHash< QString, QSet<QString> > mNewKeys;
QHash< QString, QSet<QString> > mCurKeys;
static KeyCache* mSelf;
};
#endif // KEYCACHE_H
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