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miham

(svn r13384) -Update: WebTranslator2 update to 2008-06-05 08:15:43
brazilian_portuguese - 9 fixed, 6 changed by tucalipe (15)
catalan - 9 fixed by arnaullv (9)
croatian - 13 fixed by knovak (13)
czech - 33 fixed by Hadez (33)
danish - 47 fixed by ThomasA (47)
dutch - 9 fixed by habell (9)
estonian - 42 fixed, 5 changed by kristjans (47)
finnish - 5 fixed, 1 changed by kerba (6)
french - 9 fixed, 2 changed by glx (8), belugas (3)
icelandic - 75 fixed by scrooge (75)
italian - 9 fixed, 12 changed by lorenzodv (21)
korean - 76 fixed, 15 changed by leejaeuk5 (91)
portuguese - 7 fixed by izhirahider (7)
romanian - 97 fixed, 302 changed by CrystyB (399)
russian - 12 fixed by Smoky555 (12)
spanish - 12 fixed by eusebio (12)
swedish - 13 fixed by ChrillDeVille (6), daishan (7)
turkish - 39 fixed, 1 changed by jnmbk (40)
ukrainian - 10 fixed by mad (10)

/* $Id$ */

/** @file cmd_helper.h Helper functions to extract data from command parameters. */

#ifndef CMD_HELPER_H
#define CMD_HELPER_H

#include "direction_type.h"
#include "road_type.h"


template<uint N> static inline void ExtractValid();
template<> inline void ExtractValid<1>() {}


template<typename T> struct ExtractBits;
template<> struct ExtractBits<Axis>          { static const uint Count =  1; };
template<> struct ExtractBits<DiagDirection> { static const uint Count =  2; };
template<> struct ExtractBits<RoadBits>      { static const uint Count =  4; };


template<typename T, uint N, typename U> static inline T Extract(U v)
{
	// Check if there are enough bits in v
	ExtractValid<N + ExtractBits<T>::Count <= sizeof(U) * 8>();
	return (T)GB(v, N, ExtractBits<T>::Count);
}

#endif