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/*
Miranda Database Tool
Copyright (C) 2001-2005 Richard Hughes
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 "dbtool.h"
struct ModChainEntry {
DWORD ofsOld,ofsNew;
int size;
char name[257];
} static *modChain=NULL;
static int modChainCount;
static DWORD ofsCurrent;
static int phase,iCurrentModName;
static DWORD ofsLast;
static int last_mod = 0;
int WorkModuleChain(int firstTime)
{
DBModuleName moduleName,*newModName;
if(firstTime) {
AddToStatus(STATUS_MESSAGE,TranslateT("Processing module name chain"));
modChainCount=0;
last_mod = 0;
if(modChain!=NULL) free(modChain);
modChain = (ModChainEntry*)malloc(sizeof(ModChainEntry));
phase=0;
ofsCurrent=dbhdr.ofsFirstModuleName;
}
switch(phase) {
case 0:
if(ofsCurrent==0) {
phase++;
return ERROR_SUCCESS;
}
if(!SignatureValid(ofsCurrent,DBMODULENAME_SIGNATURE)) {
AddToStatus(STATUS_ERROR,TranslateT("Module chain corrupted, further entries ignored"));
phase++;
return ERROR_SUCCESS;
}
if(PeekSegment(ofsCurrent,&moduleName,offsetof(DBModuleName,name))!=ERROR_SUCCESS) {
phase++;
return ERROR_SUCCESS;
}
if(moduleName.cbName>256)
AddToStatus(STATUS_WARNING,TranslateT("Unreasonably long module name, skipping"));
else {
modChain=(ModChainEntry*)realloc(modChain,sizeof(ModChainEntry)*++modChainCount);
modChain[modChainCount-1].ofsOld=ofsCurrent;
modChain[modChainCount-1].size=offsetof(DBModuleName,name)+moduleName.cbName;
modChain[modChainCount-1].ofsNew=0;
if (moduleName.cbName)
PeekSegment(ofsCurrent+offsetof(DBModuleName,name),&modChain[modChainCount-1].name,moduleName.cbName);
modChain[modChainCount-1].name[moduleName.cbName]=0;
}
ofsCurrent=moduleName.ofsNext;
break;
case 1:
ofsLast = 0;
iCurrentModName=0;
dbhdr.ofsFirstModuleName=0;
phase++;
case 2:
if(iCurrentModName>=modChainCount) {
DWORD dw = 0;
if(ofsLast) WriteSegment(ofsLast+offsetof(DBModuleName,ofsNext),&dw,sizeof(DWORD));
return ERROR_NO_MORE_ITEMS;
}
if(modChain[iCurrentModName].ofsNew==0) {
newModName=(DBModuleName*)_alloca(modChain[iCurrentModName].size);
if(ReadSegment(modChain[iCurrentModName].ofsOld,newModName,modChain[iCurrentModName].size)!=ERROR_SUCCESS)
return ERROR_NO_MORE_ITEMS;
if((modChain[iCurrentModName].ofsNew=WriteSegment(WSOFS_END,newModName,modChain[iCurrentModName].size))==WS_ERROR)
return ERROR_HANDLE_DISK_FULL;
{ // check duplicated modulenames
int i, n=0;
for(i=iCurrentModName+1;i<modChainCount;i++)
if(!strcmp(modChain[i].name, modChain[iCurrentModName].name)) {
modChain[i].ofsNew = modChain[iCurrentModName].ofsNew;
n++;
}
if (n) {
TCHAR *pszModuleName;
#ifdef UNICODE
TCHAR szModuleName[257];
MultiByteToWideChar(CP_ACP, 0, modChain[iCurrentModName].name, -1, szModuleName, sizeof(szModuleName) / sizeof(TCHAR));
pszModuleName = szModuleName;
#else
pszModuleName = modChain[iCurrentModName].name;
#endif
AddToStatus(STATUS_WARNING,TranslateT("Module name '%s' is not unique: %d duplicates found)"), pszModuleName, n);
}
}
if(iCurrentModName==0)
dbhdr.ofsFirstModuleName=modChain[iCurrentModName].ofsNew;
else
if(WriteSegment(ofsLast+offsetof(DBModuleName,ofsNext),&modChain[iCurrentModName].ofsNew,sizeof(DWORD))==WS_ERROR)
return ERROR_HANDLE_DISK_FULL;
ofsLast = modChain[iCurrentModName].ofsNew;
}
iCurrentModName++;
break;
}
return ERROR_SUCCESS;
}
DWORD ConvertModuleNameOfs(DWORD ofsOld)
{
int i;
if ( modChain[last_mod].ofsOld==ofsOld )
return modChain[last_mod].ofsNew;
for(i=0;i<modChainCount;i++)
if(modChain[i].ofsOld==ofsOld) {
last_mod = i;
return modChain[last_mod].ofsNew;
}
AddToStatus(STATUS_ERROR,TranslateT("Invalid module name offset, skipping data"));
return 0;
}
void FreeModuleChain()
{
if(modChain!=NULL) {
free(modChain);
modChain = NULL;
last_mod = 0;
}
}
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