File indexing completed on 2024-12-22 04:57:32 

0001 /*
0002     SPDX-FileCopyrightText: 2012 Andras Mantia <amantia@kde.org>
0003 
0004     SPDX-License-Identifier: LGPL-2.1-or-later
0005 */
0006 
0007 #pragma once
0008 
0009 /** @brief a cache for the maildir keys (file names in cur/new folders).
0010  *  It is used to find if a file is in cur or new
0011  */
0012 
0013 #include <QHash>
0014 #include <QSet>
0015 
0016 class KeyCache
0017 {
0018 public:
0019     static KeyCache *self()
0020     {
0021         if (!mSelf) {
0022             mSelf = new KeyCache();
0023         }
0024         return mSelf;
0025     }
0026 
0027     /** Find the new and cur keys on the disk for @param dir and add them to the cache */
0028     void addKeys(const QString &dir);
0029 
0030     /** Refresh the new and cur keys for @param dir */
0031     void refreshKeys(const QString &dir);
0032 
0033     /** Add a "new" key for @param dir. */
0034     void addNewKey(const QString &dir, const QString &key);
0035 
0036     /** Add a "cur" key for @param dir. */
0037     void addCurKey(const QString &dir, const QString &key);
0038 
0039     /** Remove all keys associated with @param dir. */
0040     void removeKey(const QString &dir, const QString &key);
0041 
0042     /** Check if the @param key is a "cur" key in @param dir */
0043     bool isCurKey(const QString &dir, const QString &key) const;
0044 
0045     /** Check if the @param key is a "new" key in @param dir */
0046     bool isNewKey(const QString &dir, const QString &key) const;
0047 
0048 private:
0049     KeyCache() = default;
0050 
0051     QSet<QString> listNew(const QString &dir) const;
0052 
0053     QSet<QString> listCurrent(const QString &dir) const;
0054 
0055     QHash<QString, QSet<QString>> mNewKeys;
0056     QHash<QString, QSet<QString>> mCurKeys;
0057 
0058     static KeyCache *mSelf;
0059 };