diff -r 000000000000 -r 3e07fef1e154 testexecfw/statsrv/device/source/statapi/src/ntoh.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/testexecfw/statsrv/device/source/statapi/src/ntoh.cpp Mon Mar 08 15:03:44 2010 +0800 @@ -0,0 +1,147 @@ +/* +* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). +* All rights reserved. +* This component and the accompanying materials are made available +* under the terms of "Eclipse Public License v1.0" +* which accompanies this distribution, and is available +* at the URL "http://www.eclipse.org/legal/epl-v10.html". +* +* Initial Contributors: +* Nokia Corporation - initial contribution. +* +* Contributors: +* +* Description: +* +*/ + + + +/******************************************************************************** + * + * Local Includes + * + *******************************************************************************/ +#include "ntoh.h" +#include "assert.h" + +/******************************************************************************** + * + * Implementation + * + *******************************************************************************/ +int DetectLocalEndian() +{ + /* put a long onto the stack */ + long integer_value = 0x11223344; + char *stack_value = (char*)&integer_value; + int iType = LilEnd; + + /* see how it's layed out */ + if( stack_value[0] == 0x11 ) + { + asserte( stack_value[1] == 0x22 ); + asserte( stack_value[2] == 0x33 ); + asserte( stack_value[3] == 0x44 ); + iType = BigEnd; + } + else if( stack_value[0] == 0x44 ) + { + asserte( stack_value[1] == 0x33 ); + asserte( stack_value[2] == 0x22 ); + asserte( stack_value[3] == 0x11 ); + } + else + { + ; + } + + return iType; +} + +long LittleToBigL( long src ) +{ + long dst; + char *psrc = (char*)&src, *pdst = (char*)&dst; + pdst[0] = psrc[3]; + pdst[1] = psrc[2]; + pdst[2] = psrc[1]; + pdst[3] = psrc[0]; + return dst; +} + +long BigToLittleL( long src ) +{ + long dst; + char *psrc = (char*)&src, *pdst = (char*)&dst; + pdst[0] = psrc[3]; + pdst[1] = psrc[2]; + pdst[2] = psrc[1]; + pdst[3] = psrc[0]; + return dst; +} + +short LittleToBigS( short src ) +{ + short dst; + char *psrc = (char*)&src, *pdst = (char*)&dst; + pdst[0] = psrc[1]; + pdst[1] = psrc[0]; + return src; +} + +short BigToLittleS( short src ) +{ + short dst; + char *psrc = (char*)&src, *pdst = (char*)&dst; + pdst[0] = psrc[1]; + pdst[1] = psrc[0]; + return src; +} + +long ntohl( long src ) +{ + // get the endianess of this machine -- if bigendian then it is the + // same as network byte order and nothing needs + int thisMachine = DetectLocalEndian(); + if( thisMachine == BigEnd ) + return src; + + // otherwise we have to convert from bigendian to little + return BigToLittleL( src ); +} + +long htonl( long src ) +{ + // get the endianess of this machine -- if bigendian then it is the + // same as network byte order and nothing needs + int thisMachine = DetectLocalEndian(); + if( thisMachine == BigEnd ) + return src; + + // otherwise we have to convert from littleendian to big + return LittleToBigL( src ); +} + +short ntohs( short src ) +{ + // get the endianess of this machine -- if bigendian then it is the + // same as network byte order and nothing needs + int thisMachine = DetectLocalEndian(); + if( thisMachine == BigEnd ) + return src; + + // otherwise we have to convert from bigendian to little + return BigToLittleS( src );} + +short htons( short src ) +{ + // get the endianess of this machine -- if bigendian then it is the + // same as network byte order and nothing needs + int thisMachine = DetectLocalEndian(); + if( thisMachine == BigEnd ) + return src; + + // otherwise we have to convert from littleendian to big + return LittleToBigS( src ); +}