diff options
Diffstat (limited to 'plugins/Db3x_mmap/dbmodulechain.cpp')
| -rw-r--r-- | plugins/Db3x_mmap/dbmodulechain.cpp | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/plugins/Db3x_mmap/dbmodulechain.cpp b/plugins/Db3x_mmap/dbmodulechain.cpp new file mode 100644 index 0000000000..1af4226419 --- /dev/null +++ b/plugins/Db3x_mmap/dbmodulechain.cpp @@ -0,0 +1,192 @@ +/*
+
+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;
+}
|