1 files changed, 72 insertions, 0 deletions
diff --git a/plugins/Dbx_mdbx/src/dbmodulechain.cpp b/plugins/Dbx_mdbx/src/dbmodulechain.cpp
new file mode 100644
index 0000000000..b9b29b4c5a
--- /dev/null
+++ b/plugins/Dbx_mdbx/src/dbmodulechain.cpp
@@ -0,0 +1,72 @@
+/*
+
+Miranda NG: the free IM client for Microsoft* Windows*
+
+Copyright (c) 2012-18 Miranda NG team (https://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 "stdafx.h"
+
+int CDbxMDBX::InitModules()
+{
+	txn_ptr_ro trnlck(m_txn);
+	cursor_ptr_ro cursor(m_curModules);
+
+	MDBX_val key, data;
+	while (mdbx_cursor_get(cursor, &key, &data, MDBX_NEXT) == MDBX_SUCCESS) {
+		uint32_t iMod = *(uint32_t*)key.iov_base;
+		const char *szMod = (const char*)data.iov_base;
+		m_Modules[iMod] = szMod;
+	}
+	return 0;
+}
+
+// will create the offset if it needs to
+uint32_t CDbxMDBX::GetModuleID(const char *szName)
+{
+	uint32_t iHash = mir_hashstr(szName);
+	if (m_Modules.find(iHash) == m_Modules.end()) {
+		MDBX_val key = { &iHash, sizeof(iHash) }, data = { (void*)szName, strlen(szName) + 1 };
+
+		for (;; Remap()) {
+			txn_ptr txn(m_env);
+			MDBX_CHECK(mdbx_put(txn, m_dbModules, &key, &data, 0), -1);
+			if (txn.commit() == MDBX_SUCCESS)
+				break;
+		}
+		m_Modules[iHash] = szName;
+	}
+
+	return iHash;
+}
+
+char* CDbxMDBX::GetModuleName(uint32_t dwId)
+{
+	auto it = m_Modules.find(dwId);
+	return it != m_Modules.end() ? const_cast<char*>(it->second.c_str()) : nullptr;
+}
+
+STDMETHODIMP_(BOOL) CDbxMDBX::EnumModuleNames(DBMODULEENUMPROC pFunc, void *pParam)
+{
+	for (auto it = m_Modules.begin(); it != m_Modules.end(); ++it)
+		if (int ret = pFunc(it->second.c_str(), pParam))
+			return ret;
+
+	return 0;
+}