(svn r6139) -Codechange: strings are StringID. This should be changed in strings.h as well, but you would need to include openttd.h and that opens a whole new can of worms.
/* $Id$ */
#include "stdafx.h"
#include "openttd.h"
#include "station_map.h"
StationType GetStationType(TileIndex t)
{
assert(IsTileType(t, MP_STATION));
if (IsRailwayStation(t)) return STATION_RAIL;
if (IsAirport(t)) return STATION_AIRPORT;
if (IsTruckStop(t)) return STATION_TRUCK;
if (IsBusStop(t)) return STATION_BUS;
if (IsOilRig(t)) return STATION_OILRIG;
if (IsDock(t)) return STATION_DOCK;
assert(IsBuoy_(t));
return STATION_BUOY;
}