/**

 * vim: set ts=4 :

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

 * SourceMod Team Fortress 2 Extension

 * 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 "extension.h"

#include "util.h"

size_t UTIL_Format(char *buffer, size_t maxlength, const char *fmt, ...)

{

	va_list ap;

	va_start(ap, fmt);

	size_t len = vsnprintf(buffer, maxlength, fmt, ap);

	va_end(ap);

	if (len >= maxlength)

	{

		buffer[maxlength - 1] = '\0';

		return (maxlength - 1);

	}

	else

	{

		return len;

	}

}

bool UTIL_FindDataTable(SendTable *pTable, 

						  const char *name,

						  sm_sendprop_info_t *info,

						  unsigned int offset)

{

	const char *pname;

	int props = pTable->GetNumProps();

	SendProp *prop;

	SendTable *table;

	for (int i=0; i<props; i++)

	{

		prop = pTable->GetProp(i);

		if ((table = prop->GetDataTable()) != NULL)

		{

			pname = table->GetName();

			if (pname && strcmp(name, pname) == 0)

			{

				info->prop = prop;

				info->actual_offset = offset + info->prop->GetOffset();

				return true;

			}

			if (UTIL_FindDataTable(table, 

				name,

				info,

				offset + prop->GetOffset())

				)

			{

				return true;

			}

		}

	}

	return false;

}

bool UTIL_ContainsDataTable(SendTable *pTable, const char *name)

{

	const char *pname = pTable->GetName();

	int props = pTable->GetNumProps();

	SendProp *prop;

	SendTable *table;

	if (pname && strcmp(name, pname) == 0)

		return true;

	for (int i = 0; i < props; i++)

	{

		prop = pTable->GetProp(i);

		if ((table = prop->GetDataTable()) != NULL)

		{

			pname = table->GetName();

			if (pname && strcmp(name, pname) == 0)

			{

				return true;

			}

			if (UTIL_ContainsDataTable(table, name))

			{

				return true;

			}

		}

	}

	return false;

}

ServerClass *UTIL_FindServerClass(const char *classname)

{

	ServerClass *sc = gamedll->GetAllServerClasses();

	while (sc)

	{

		if (strcmp(classname, sc->GetName()) == 0)

		{

			return sc;

		}

		sc = sc->m_pNext;

	}

	return NULL;

}

CBaseEntity *UTIL_GetCBaseEntity(int num, bool onlyPlayers)

{

	edict_t *pEdict = engine->PEntityOfEntIndex(num);

	if (!pEdict || pEdict->IsFree())

	{

		return NULL;

	}

	if (num > 0 && num <= playerhelpers->GetMaxClients())

	{

		IGamePlayer *pPlayer = playerhelpers->GetGamePlayer(pEdict);

		if (!pPlayer || !pPlayer->IsConnected())

		{

			return NULL;

		}

	}

	else if (onlyPlayers)

	{

		return NULL;

	}

	IServerUnknown *pUnk;

	if ((pUnk=pEdict->GetUnknown()) == NULL)

	{

		return NULL;

	}

	return pUnk->GetBaseEntity();

}