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/*
Miranda IM: the free IM client for Microsoft* Windows*
Copyright 2000-2003 Miranda ICQ/IM project,
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"
static INT_PTR EnumModuleNames(WPARAM wParam,LPARAM lParam);
typedef struct {
char *name;
DWORD ofs;
} ModuleName;
HANDLE hModHeap = NULL;
static SortedList lMods, lOfs;
static int ModCompare( ModuleName *mn1, ModuleName *mn2 )
{
return strcmp( mn1->name, mn2->name );
}
static int OfsCompare( ModuleName *mn1, ModuleName *mn2 )
{
return ( mn1->ofs - mn2->ofs );
}
void AddToList(char *name, DWORD len, DWORD ofs)
{
int index;
ModuleName *mn = (ModuleName*)HeapAlloc(hModHeap,0,sizeof(ModuleName));
mn->name = name;
mn->ofs = ofs;
if (li.List_GetIndex(&lMods,mn,&index))
DatabaseCorruption( _T("%s (Module Name not unique)"));
li.List_Insert(&lMods,mn,index);
if (li.List_GetIndex(&lOfs,mn,&index))
DatabaseCorruption( _T("%s (Module Offset not unique)"));
li.List_Insert(&lOfs,mn,index);
}
int InitModuleNames(void)
{
struct DBModuleName *dbmn;
DWORD ofsThis;
int nameLen;
char *mod;
hModHeap=HeapCreate(0,0,0);
lMods.sortFunc=ModCompare;
lMods.increment=50;
lOfs.sortFunc=OfsCompare;
lOfs.increment=50;
ofsThis=dbHeader.ofsFirstModuleName;
dbmn=(struct DBModuleName*)DBRead(ofsThis,sizeof(struct DBModuleName),NULL);
while(ofsThis) {
if(dbmn->signature!=DBMODULENAME_SIGNATURE) DatabaseCorruption(NULL);
nameLen=dbmn->cbName;
mod = (char*)HeapAlloc(hModHeap,0,nameLen+1);
CopyMemory(mod,DBRead(ofsThis+offsetof(struct DBModuleName,name),nameLen,NULL),nameLen);
mod[nameLen] = 0;
AddToList(mod, nameLen, ofsThis);
ofsThis=dbmn->ofsNext;
dbmn=(struct DBModuleName*)DBRead(ofsThis,sizeof(struct DBModuleName),NULL);
}
CreateServiceFunction(MS_DB_MODULES_ENUM,EnumModuleNames);
return 0;
}
void UninitModuleNames(void)
{
HeapDestroy(hModHeap);
li.List_Destroy(&lMods);
li.List_Destroy(&lOfs);
}
static DWORD FindExistingModuleNameOfs(const char *szName)
{
static ModuleName *lastmn = NULL;
ModuleName mn, *pmn;
int index;
mn.name = (char*)szName;
mn.ofs = 0;
if (lastmn && ModCompare(&mn,lastmn) == 0)
return lastmn->ofs;
if (li.List_GetIndex(&lMods,&mn,&index)) {
pmn = (ModuleName*)lMods.items[index];
lastmn = pmn;
return pmn->ofs;
}
return 0;
}
//will create the offset if it needs to
DWORD GetModuleNameOfs(const char *szName)
{
struct DBModuleName dbmn;
int nameLen;
DWORD ofsNew,ofsExisting;
char *mod;
ofsExisting=FindExistingModuleNameOfs(szName);
if(ofsExisting) return ofsExisting;
nameLen = (int)strlen(szName);
//need to create the module name
ofsNew=CreateNewSpace(nameLen+offsetof(struct DBModuleName,name));
dbmn.signature=DBMODULENAME_SIGNATURE;
dbmn.cbName=nameLen;
dbmn.ofsNext=dbHeader.ofsFirstModuleName;
dbHeader.ofsFirstModuleName=ofsNew;
DBWrite(0,&dbHeader,sizeof(dbHeader));
DBWrite(ofsNew,&dbmn,offsetof(struct DBModuleName,name));
DBWrite(ofsNew+offsetof(struct DBModuleName,name),(PVOID)szName,nameLen);
DBFlush(0);
//add to cache
mod = (char*)HeapAlloc(hModHeap,0,nameLen+1);
strcpy(mod,szName);
AddToList(mod, nameLen, ofsNew);
//quit
return ofsNew;
}
char *GetModuleNameByOfs(DWORD ofs)
{
static ModuleName *lastmn = NULL;
ModuleName mn, *pmn;
int index;
if (lastmn && lastmn->ofs == ofs)
return lastmn->name;
mn.name = NULL;
mn.ofs = ofs;
if (li.List_GetIndex(&lOfs,&mn,&index)) {
pmn = (ModuleName*)lOfs.items[index];
lastmn = pmn;
return pmn->name;
}
DatabaseCorruption(NULL);
return NULL;
}
static INT_PTR EnumModuleNames(WPARAM wParam,LPARAM lParam)
{
int i;
int ret;
ModuleName *pmn;
for(i = 0; i < lMods.realCount; i++) {
pmn = (ModuleName *)lMods.items[i];
ret=((DBMODULEENUMPROC)lParam)(pmn->name,pmn->ofs,wParam);
if(ret) return ret;
}
return 0;
}
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