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/*
Miranda NG: the free IM client for Microsoft* Windows*
Copyright (C) 2012-20 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"
void CDb3Mmap::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(L"%s (Module Name not unique)");
m_lMods.insert(mn);
if (m_lOfs.getIndex(mn) != -1)
DatabaseCorruption(L"%s (Module Offset not unique)");
m_lOfs.insert(mn);
}
int CDb3Mmap::InitModuleNames(void)
{
DWORD ofsThis = m_dbHeader.ofsModuleNames;
DBModuleName *dbmn = (struct DBModuleName*)DBRead(ofsThis, nullptr);
while (ofsThis) {
if (dbmn->signature != DBMODULENAME_SIGNATURE)
DatabaseCorruption(nullptr);
int nameLen = dbmn->cbName;
char *mod = (char*)HeapAlloc(m_hModHeap, 0, nameLen + 1);
memcpy(mod, DBRead(ofsThis + offsetof(struct DBModuleName, name), nullptr), nameLen);
mod[nameLen] = 0;
AddToList(mod, ofsThis);
ofsThis = dbmn->ofsNext;
dbmn = (struct DBModuleName*)DBRead(ofsThis, nullptr);
}
return 0;
}
DWORD CDb3Mmap::FindExistingModuleNameOfs(const char *szName)
{
ModuleName mn = { (char*)szName, 0 };
if (m_lastmn && !mir_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 CDb3Mmap::GetModuleNameOfs(const char *szName)
{
DWORD ofsExisting = FindExistingModuleNameOfs(szName);
if (ofsExisting)
return ofsExisting;
if (m_bReadOnly)
return 0;
int nameLen = (int)mir_strlen(szName);
// need to create the module name
DWORD ofsNew = CreateNewSpace(nameLen + offsetof(struct DBModuleName, name));
DBModuleName dbmn;
dbmn.signature = DBMODULENAME_SIGNATURE;
dbmn.cbName = nameLen;
dbmn.ofsNext = m_dbHeader.ofsModuleNames;
m_dbHeader.ofsModuleNames = ofsNew;
DBWrite(ofsNew, &dbmn, offsetof(struct DBModuleName, name));
DBWrite(ofsNew + offsetof(struct DBModuleName, name), (PVOID)szName, nameLen);
DBWrite(0, &m_dbHeader, sizeof(m_dbHeader));
DBFlush(0);
// add to cache
char *mod = (char*)HeapAlloc(m_hModHeap, 0, nameLen + 1);
mir_strcpy(mod, szName);
AddToList(mod, ofsNew);
// quit
return ofsNew;
}
char* CDb3Mmap::GetModuleNameByOfs(DWORD ofs)
{
if (m_lastmn && m_lastmn->ofs == ofs)
return m_lastmn->name;
ModuleName mn = { nullptr, ofs };
int index = m_lOfs.getIndex(&mn);
if (index != -1) {
ModuleName *pmn = m_lOfs[index];
m_lastmn = pmn;
return pmn->name;
}
DatabaseCorruption(nullptr);
return nullptr;
}
STDMETHODIMP_(BOOL) CDb3Mmap::EnumModuleNames(DBMODULEENUMPROC pFunc, void *pParam)
{
for (auto &pmn : m_lMods) {
int ret = pFunc(pmn->name, pParam);
if (ret)
return ret;
}
return 0;
}
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