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/*
Miranda NG: the free IM client for Microsoft* Windows*
Copyright (ñ) 2012-16 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 "stdafx.h"
void CDbxMdb::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 CDbxMdb::InitModuleNames(void)
{
m_maxModuleID = 0;
txn_ptr_ro trnlck(m_txn);
cursor_ptr_ro cursor(m_curModules);
MDB_val key, data;
while (mdb_cursor_get(cursor, &key, &data, MDB_NEXT) == MDB_SUCCESS)
{
DBModuleName *pmod = (DBModuleName*)data.mv_data;
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*)key.mv_data;
AddToList(pVal, moduleId);
if (moduleId > m_maxModuleID)
m_maxModuleID = moduleId;
}
return 0;
}
DWORD CDbxMdb::FindExistingModuleNameOfs(const char *szName)
{
ModuleName mn = { (char*)szName, 0 };
if (m_lastmn && !strcmp(mn.name, m_lastmn->name))
return m_lastmn->ofs;
int index = m_lMods.getIndex(&mn);
if (index != -1) {
ModuleName *pmn = m_lMods[index];
m_lastmn = pmn;
return pmn->ofs;
}
return 0;
}
// will create the offset if it needs to
DWORD CDbxMdb::GetModuleNameOfs(const char *szName)
{
DWORD ofsExisting = FindExistingModuleNameOfs(szName);
if (ofsExisting)
return ofsExisting;
if (m_bReadOnly)
return 0;
int nameLen = (int)strlen(szName);
mir_cslock lck(m_csDbAccess);
// need to create the module name
int newIdx = ++m_maxModuleID;
DBModuleName *pmod = (DBModuleName*)_alloca(sizeof(DBModuleName) + nameLen + 1);
pmod->dwSignature = DBMODULENAME_SIGNATURE;
pmod->cbName = (char)nameLen;
strcpy(pmod->name, szName);
MDB_val key = { sizeof(int), &newIdx }, data = { sizeof(DBModuleName) + nameLen + 1, pmod };
for (;; Remap()) {
txn_ptr trnlck(m_pMdbEnv);
MDB_CHECK(mdb_put(trnlck, m_dbModules, &key, &data, 0), -1);
if (trnlck.commit())
break;
}
// add to cache
char *mod = (char*)HeapAlloc(m_hModHeap, 0, nameLen + 1);
strcpy(mod, szName);
AddToList(mod, newIdx);
// quit
return newIdx;
}
char* CDbxMdb::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) CDbxMdb::EnumModuleNames(DBMODULEENUMPROC pFunc, void *pParam)
{
for (int i = 0; i < m_lMods.getCount(); i++) {
ModuleName *pmn = m_lMods[i];
if (int ret = pFunc(pmn->name, pmn->ofs, (LPARAM)pParam))
return ret;
}
return 0;
}
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