1 files changed, 77 insertions, 0 deletions

diff --git a/examples/maildirresource/libmaildir/keycache.h b/examples/maildirresource/libmaildir/keycache.h
new file mode 100644
index 0000000..3cce6f0
--- /dev/null
+++ b/examples/maildirresource/libmaildir/keycache.h
@@ -0,0 +1,77 @@
+/*
+    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