1 files changed, 102 insertions, 0 deletions
diff --git a/plugins/Dbx_tree/FileBTree.h b/plugins/Dbx_tree/FileBTree.h
new file mode 100644
index 0000000000..3a9e58a43e
--- /dev/null
+++ b/plugins/Dbx_tree/FileBTree.h
@@ -0,0 +1,102 @@
+/*
+
+dbx_tree: tree database driver for Miranda IM
+
+Copyright 2007-2010 Michael "Protogenes" Kunz,
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#pragma once
+#include "BTree.h"
+#include "BlockManager.h"
+#include "Logger.h"
+
+template <typename TKey, uint16_t SizeParam = 4>
+class CFileBTree :	public CBTree<TKey, SizeParam>
+{
+private:
+
+protected:
+	CBlockManager & m_BlockManager;
+	uint16_t cSignature;
+
+	virtual void PrepareInsertOperation();
+	virtual TNode * CreateNewNode(TNodeRef & NodeRef);
+	virtual void DeleteNode(TNodeRef Node);
+	virtual TNode * Read(TNodeRef Node);
+	virtual void Write(TNodeRef Node);
+public:
+	CFileBTree(CBlockManager & BlockManager, typename CBTree<TKey, SizeParam>::TNodeRef RootNode, uint16_t Signature);
+	virtual ~CFileBTree();
+};
+
+
+
+
+template <typename TKey, uint16_t SizeParam>
+CFileBTree<TKey, SizeParam>::CFileBTree(CBlockManager & BlockManager, typename CBTree<TKey, SizeParam>::TNodeRef RootNode, uint16_t Signature)
+:	CBTree<TKey, SizeParam>::CBTree(RootNode),
+	m_BlockManager(BlockManager)
+{
+	cSignature = Signature;
+	CBTree<TKey, SizeParam>::m_DestroyTree = false;
+}
+
+template <typename TKey, uint16_t SizeParam>
+CFileBTree<TKey, SizeParam>::~CFileBTree()
+{
+	CBTree<TKey, SizeParam>::m_DestroyTree = false;
+}
+
+
+template <typename TKey, uint16_t SizeParam>
+void CFileBTree<TKey, SizeParam>::PrepareInsertOperation()
+{
+
+}
+
+template <typename TKey, uint16_t SizeParam>
+typename CBTree<TKey, SizeParam>::TNode * CFileBTree<TKey, SizeParam>::CreateNewNode(typename CBTree<TKey, SizeParam>::TNodeRef & NodeRef)
+{
+	return reinterpret_cast<TNode*>( m_BlockManager.CreateBlock<uint32_t>(NodeRef, cSignature << 16, sizeof(typename CBTree<TKey, SizeParam>::TNode) - 4) - 1);
+}
+
+template <typename TKey, uint16_t SizeParam>
+void CFileBTree<TKey, SizeParam>::DeleteNode(typename CBTree<TKey, SizeParam>::TNodeRef Node)
+{
+	m_BlockManager.DeleteBlock(Node);
+}
+
+template <typename TKey, uint16_t SizeParam>
+typename CBTree<TKey, SizeParam>::TNode * CFileBTree<TKey, SizeParam>::Read(typename CBTree<TKey, SizeParam>::TNodeRef Node)
+{
+	uint32_t sig = 0;
+	uint32_t size = 0;
+	TNode * res = reinterpret_cast<TNode*>( m_BlockManager.ReadBlock<uint32_t>(Node, size, sig) - 1); /// HACK using knowledge about the blockmanager here
+	
+	CHECK(res->Signature == cSignature,
+		logCRITICAL, _T("Signature check failed"));
+
+	return res;
+}
+
+template <typename TKey, uint16_t SizeParam>
+void CFileBTree<TKey, SizeParam>::Write(typename CBTree<TKey, SizeParam>::TNodeRef Node)
+{
+	m_BlockManager.UpdateBlock(Node, 0);
+}
+