/**

  * vim: set ts=4 :

  * =============================================================================

  * SourceMod

  * Copyright (C) 2004-2008 AlliedModders LLC.  All rights reserved.

  * =============================================================================

  *

  * This program is free software; you can redistribute it and/or modify it under

  * the terms of the GNU General Public License, version 3.0, as published by the

  * Free Software Foundation.

  * 

  * 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, see <http://www.gnu.org/licenses/>.

  *

  * As a special exception, AlliedModders LLC gives you permission to link the

  * code of this program (as well as its derivative works) to "Half-Life 2," the

  * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software

  * by the Valve Corporation.  You must obey the GNU General Public License in

  * all respects for all other code used.  Additionally, AlliedModders LLC grants

  * this exception to all derivative works.  AlliedModders LLC defines further

  * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),

  * or <http://www.sourcemod.net/license.php>.

  *

  * Version: $Id$

  */

 #include "sm_globals.h"

 #include <sh_list.h>

 #include <convar.h>

 #include "concmd_cleaner.h"

 #include "sm_stringutil.h"

 #include "sourcemm_api.h"

 #include "compat_wrappers.h"

 #if SOURCE_ENGINE >= SE_ORANGEBOX

 SH_DECL_HOOK1_void(ICvar, UnregisterConCommand, SH_NOATTRIB, 0, ConCommandBase *);

 SH_DECL_HOOK1_void(ICvar, RegisterConCommand, SH_NOATTRIB, 0, ConCommandBase *);

 #else

 SH_DECL_HOOK1_void(ICvar, RegisterConCommandBase, SH_NOATTRIB, 0, ConCommandBase *);

 #endif

 using namespace SourceHook;

 struct ConCommandInfo

 {

 	ConCommandBase *pBase;

 	IConCommandTracker *cls;

 	char name[64];

 };

 List<ConCommandInfo *> tracked_bases;

 IConCommandLinkListener *IConCommandLinkListener::head = NULL;

 ConCommandBase *FindConCommandBase(const char *name);

 class ConCommandCleaner : public SMGlobalClass

 {

 public:

 	void OnSourceModAllInitialized()

 	{

 #if SOURCE_ENGINE >= SE_ORANGEBOX

 		SH_ADD_HOOK_MEMFUNC(ICvar, UnregisterConCommand, icvar, this, &ConCommandCleaner::UnlinkConCommandBase, false);

 		SH_ADD_HOOK_MEMFUNC(ICvar, RegisterConCommand, icvar, this, &ConCommandCleaner::LinkConCommandBase, false);

 #else

 		SH_ADD_HOOK_MEMFUNC(ICvar, RegisterConCommandBase, icvar, this, &ConCommandCleaner::LinkConCommandBase, false);

 #endif

 	}

 	void OnSourceModShutdown()

 	{

 #if SOURCE_ENGINE >= SE_ORANGEBOX

 		SH_REMOVE_HOOK_MEMFUNC(ICvar, UnregisterConCommand, icvar, this, &ConCommandCleaner::UnlinkConCommandBase, false);

 		SH_REMOVE_HOOK_MEMFUNC(ICvar, RegisterConCommand, icvar, this, &ConCommandCleaner::LinkConCommandBase, false);

 #else

 		SH_REMOVE_HOOK_MEMFUNC(ICvar, RegisterConCommandBase, icvar, this, &ConCommandCleaner::LinkConCommandBase, false);

 #endif

 	}

 	void LinkConCommandBase(ConCommandBase *pBase)

 	{

 		IConCommandLinkListener *listener = IConCommandLinkListener::head;

 		while (listener)

 		{

 			listener->OnLinkConCommand(pBase);

 			listener = listener->next;

 		}

 	}

 	void UnlinkConCommandBase(ConCommandBase *pBase)

 	{

 		ConCommandInfo *pInfo;

 		List<ConCommandInfo *>::iterator iter = tracked_bases.begin();

 		IConCommandLinkListener *listener = IConCommandLinkListener::head;

 		while (listener)

 		{

 			listener->OnUnlinkConCommand(pBase);

 			listener = listener->next;

 		}

 		if (pBase)

 		{

 			while (iter != tracked_bases.end())

 			{

 				if ((*iter)->pBase == pBase)

 				{

 					pInfo = (*iter);

 					iter = tracked_bases.erase(iter);

 					pInfo->cls->OnUnlinkConCommandBase(pBase, pBase->GetName(), true);

 					delete pInfo;

 				}

 				else

 				{

 					iter++;

 				}

 			}

 		}

 		else

 		{

 			while (iter != tracked_bases.end())

 			{

 				/* This is just god-awful! */

 				if (FindCommandBase((*iter)->name) != (*iter)->pBase)

 				{

 					pInfo = (*iter);

 					iter = tracked_bases.erase(iter);

 					pInfo->cls->OnUnlinkConCommandBase(pBase, pInfo->name, false);

 					delete pInfo;

 				}

 				else

 				{

 					iter++;

 				}

 			}

 		}

 	}

 	void AddTarget(ConCommandBase *pBase, IConCommandTracker *cls)

 	{

 		ConCommandInfo *info = new ConCommandInfo;

 		info->pBase = pBase;

 		info->cls = cls;

 		strncopy(info->name, pBase->GetName(), sizeof(info->name));

 		tracked_bases.push_back(info);

 	}

 	void RemoveTarget(ConCommandBase *pBase, IConCommandTracker *cls)

 	{

 		List<ConCommandInfo *>::iterator iter;

 		ConCommandInfo *pInfo;

 		iter = tracked_bases.begin();

 		while (iter != tracked_bases.end())

 		{

 			pInfo = (*iter);

 			if (pInfo->pBase == pBase && pInfo->cls == cls)

 			{

 				delete pInfo;

 				iter = tracked_bases.erase(iter);

 			}

 			else

 			{

 				iter++;

 			}

 		}

 	}

 } s_ConCmdTracker;

 void TrackConCommandBase(ConCommandBase *pBase, IConCommandTracker *me)

 {

 	s_ConCmdTracker.AddTarget(pBase, me);

 }

 void UntrackConCommandBase(ConCommandBase *pBase, IConCommandTracker *me)

 {

 	s_ConCmdTracker.RemoveTarget(pBase, me);

 }

 void Global_OnUnlinkConCommandBase(ConCommandBase *pBase)

 {

 	s_ConCmdTracker.UnlinkConCommandBase(pBase);

 }