From 2e511ab1b1ff3d78c695874e3b28ff4ce7680cc8 Mon Sep 17 00:00:00 2001
From: George Hazan <george.hazan@gmail.com>
Date: Thu, 2 Apr 2015 17:28:07 +0000
Subject: kyotocabinet based db driver first version that compiles DO NOT USE
 IT, dragons live there

git-svn-id: http://svn.miranda-ng.org/main/trunk@12580 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
---
 plugins/Dbx_kyoto/src/dbmodulechain.cpp | 127 ++++++++++++++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 plugins/Dbx_kyoto/src/dbmodulechain.cpp

(limited to 'plugins/Dbx_kyoto/src/dbmodulechain.cpp')

diff --git a/plugins/Dbx_kyoto/src/dbmodulechain.cpp b/plugins/Dbx_kyoto/src/dbmodulechain.cpp
new file mode 100644
index 0000000000..9416f5305d
--- /dev/null
+++ b/plugins/Dbx_kyoto/src/dbmodulechain.cpp
@@ -0,0 +1,127 @@
+/*
+
+Miranda NG: the free IM client for Microsoft* Windows*
+
+Copyright (ñ) 2012-15 Miranda NG project (http://miranda-ng.org)
+all portions of this codebase are copyrighted to the people
+listed in contributors.txt.
+
+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.
+*/
+
+#include "commonheaders.h"
+
+void CDbxKV::AddToList(char *name, DWORD ofs)
+{
+	ModuleName *mn = (ModuleName*)HeapAlloc(m_hModHeap, 0, sizeof(ModuleName));
+	mn->name = name;
+	mn->ofs = ofs;
+
+	if (m_lMods.getIndex(mn) != -1)
+		DatabaseCorruption(_T("%s (Module Name not unique)"));
+	m_lMods.insert(mn);
+
+	if (m_lOfs.getIndex(mn) != -1)
+		DatabaseCorruption(_T("%s (Module Offset not unique)"));
+	m_lOfs.insert(mn);
+}
+
+int CDbxKV::InitModuleNames(void)
+{
+	m_maxModuleID = 0;
+
+	cursor_ptr cursor(m_dbModules);
+	for (cursor->jump(); cursor->step();) {
+		size_t size;
+		const char *pRec, *pKey = cursor->get(&size, &pRec, &size);
+		DBModuleName *pmod = (DBModuleName*)pRec;
+		if (pmod->dwSignature != DBMODULENAME_SIGNATURE)
+			DatabaseCorruption(NULL);
+
+		char *pVal = (char*)HeapAlloc(m_hModHeap, 0, pmod->cbName+1);
+		memcpy(pVal, pmod->name, pmod->cbName);
+		pVal[pmod->cbName] = 0;
+
+		int moduleId = *(int*)pKey;
+		AddToList(pVal, moduleId);
+
+		if (moduleId > m_maxModuleID)
+			m_maxModuleID = moduleId;
+		delete[] pKey;
+	}
+
+	return 0;
+}
+
+DWORD CDbxKV::FindExistingModuleNameOfs(const char *szName)
+{
+	ModuleName mn = { (char*)szName, 0 };
+
+	int index = m_lMods.getIndex(&mn);
+	if (index != -1)		
+		return m_lMods[index]->ofs;
+
+	return 0;
+}
+
+// will create the offset if it needs to
+DWORD CDbxKV::GetModuleNameOfs(const char *szName)
+{
+	DWORD ofsExisting = FindExistingModuleNameOfs(szName);
+	if (ofsExisting)
+		return ofsExisting;
+
+	if (m_bReadOnly)
+		return 0;
+
+	int nameLen = (int)strlen(szName);
+
+	// need to create the module name
+	int newIdx = ++m_maxModuleID;
+	DBModuleName *pmod = (DBModuleName*)_alloca(sizeof(DBModuleName) + nameLen);
+	pmod->dwSignature = DBMODULENAME_SIGNATURE;
+	pmod->cbName = (char)nameLen;
+	strcpy(pmod->name, szName);
+	m_dbModules.set((LPCSTR)&newIdx, sizeof(int), (LPCSTR)pmod, sizeof(DBModuleName) + nameLen);
+
+	// add to cache
+	char *mod = (char*)HeapAlloc(m_hModHeap, 0, nameLen + 1);
+	strcpy(mod, szName);
+	AddToList(mod, newIdx);
+
+	// quit
+	return -1;
+}
+
+char* CDbxKV::GetModuleNameByOfs(DWORD ofs)
+{
+	ModuleName mn = { NULL, ofs };
+	int index = m_lOfs.getIndex(&mn);
+	if (index != -1)
+		return m_lOfs[index]->name;
+
+	return NULL;
+}
+
+STDMETHODIMP_(BOOL) CDbxKV::EnumModuleNames(DBMODULEENUMPROC pFunc, void *pParam)
+{
+	for (int i = 0; i < m_lMods.getCount(); i++) {
+		ModuleName *pmn = m_lMods[i];
+		int ret = pFunc(pmn->name, pmn->ofs, (LPARAM)pParam);
+		if (ret)
+			return ret;
+	}
+	return 0;
+}
-- 
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