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/* $Id: RTStrPrintHexBytes.cpp $ */
/** @file
* IPRT - RTStrPrintHexBytes.
*/
/*
* Copyright (C) 2009-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include "internal/iprt.h"
#include <iprt/string.h>
#include <iprt/assert.h>
#include <iprt/errcore.h>
RTDECL(int) RTStrPrintHexBytes(char *pszBuf, size_t cbBuf, void const *pv, size_t cb, uint32_t fFlags)
{
AssertReturn( !(fFlags & ~(RTSTRPRINTHEXBYTES_F_UPPER | RTSTRPRINTHEXBYTES_F_SEP_SPACE | RTSTRPRINTHEXBYTES_F_SEP_COLON))
&& (fFlags & (RTSTRPRINTHEXBYTES_F_SEP_SPACE | RTSTRPRINTHEXBYTES_F_SEP_COLON))
!= (RTSTRPRINTHEXBYTES_F_SEP_SPACE | RTSTRPRINTHEXBYTES_F_SEP_COLON),
VERR_INVALID_FLAGS);
AssertPtrReturn(pszBuf, VERR_INVALID_POINTER);
AssertReturn(cb * 2 >= cb, VERR_BUFFER_OVERFLOW);
char const chSep = fFlags & RTSTRPRINTHEXBYTES_F_SEP_SPACE ? ' '
: fFlags & RTSTRPRINTHEXBYTES_F_SEP_COLON ? ':' : '\0';
AssertReturn(cbBuf >= cb * (2 + (chSep != '\0')) - (chSep != '\0') + 1, VERR_BUFFER_OVERFLOW);
if (cb)
AssertPtrReturn(pv, VERR_INVALID_POINTER);
static char const s_szHexDigitsLower[17] = "0123456789abcdef";
static char const s_szHexDigitsUpper[17] = "0123456789ABCDEF";
const char *pszHexDigits = !(fFlags & RTSTRPRINTHEXBYTES_F_UPPER) ? s_szHexDigitsLower : s_szHexDigitsUpper;
uint8_t const *pb = (uint8_t const *)pv;
if (!chSep)
{
while (cb-- > 0)
{
uint8_t b = *pb++;
*pszBuf++ = pszHexDigits[b >> 4];
*pszBuf++ = pszHexDigits[b & 0xf];
}
}
else if (cb-- > 0)
{
uint8_t b = *pb++;
*pszBuf++ = pszHexDigits[b >> 4];
*pszBuf++ = pszHexDigits[b & 0xf];
while (cb-- > 0)
{
b = *pb++;
*pszBuf++ = chSep;
*pszBuf++ = pszHexDigits[b >> 4];
*pszBuf++ = pszHexDigits[b & 0xf];
}
}
*pszBuf = '\0';
return VINF_SUCCESS;
}
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