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|
/* $Id: strformatnum.cpp $ */
/** @file
* IPRT - String Formatter, Single Numbers.
*/
/*
* Copyright (C) 2010-2020 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 *
*********************************************************************************************************************************/
#define LOG_GROUP RTLOGGROUP_STRING
#include <iprt/string.h>
#include "internal/iprt.h"
#include <iprt/assert.h>
#include <iprt/errcore.h>
#include "internal/string.h"
RTDECL(ssize_t) RTStrFormatU8(char *pszBuf, size_t cbBuf, uint8_t u8Value, unsigned int uiBase,
signed int cchWidth, signed int cchPrecision, uint32_t fFlags)
{
fFlags &= ~RTSTR_F_BIT_MASK;
fFlags |= RTSTR_F_8BIT;
ssize_t cchRet;
if (cbBuf >= 64)
cchRet = RTStrFormatNumber(pszBuf, u8Value, uiBase, cchWidth, cchPrecision, fFlags);
else
{
char szTmp[64];
cchRet = RTStrFormatNumber(szTmp, u8Value, uiBase, cchWidth, cchPrecision, fFlags);
if ((size_t)cchRet < cbBuf)
memcpy(pszBuf, szTmp, cchRet + 1);
else
{
if (cbBuf)
{
memcpy(pszBuf, szTmp, cbBuf - 1);
pszBuf[cbBuf - 1] = '\0';
}
cchRet = VERR_BUFFER_OVERFLOW;
}
}
return cchRet;
}
RTDECL(ssize_t) RTStrFormatU16(char *pszBuf, size_t cbBuf, uint16_t u16Value, unsigned int uiBase,
signed int cchWidth, signed int cchPrecision, uint32_t fFlags)
{
fFlags &= ~RTSTR_F_BIT_MASK;
fFlags |= RTSTR_F_16BIT;
ssize_t cchRet;
if (cbBuf >= 64)
cchRet = RTStrFormatNumber(pszBuf, u16Value, uiBase, cchWidth, cchPrecision, fFlags);
else
{
char szTmp[64];
cchRet = RTStrFormatNumber(szTmp, u16Value, uiBase, cchWidth, cchPrecision, fFlags);
if ((size_t)cchRet <= cbBuf)
memcpy(pszBuf, szTmp, cchRet + 1);
else
{
if (cbBuf)
{
memcpy(pszBuf, szTmp, cbBuf - 1);
pszBuf[cbBuf - 1] = '\0';
}
cchRet = VERR_BUFFER_OVERFLOW;
}
}
return cchRet;
}
RTDECL(ssize_t) RTStrFormatU32(char *pszBuf, size_t cbBuf, uint32_t u32Value, unsigned int uiBase,
signed int cchWidth, signed int cchPrecision, uint32_t fFlags)
{
fFlags &= ~RTSTR_F_BIT_MASK;
fFlags |= RTSTR_F_32BIT;
ssize_t cchRet;
if (cbBuf >= 64)
cchRet = RTStrFormatNumber(pszBuf, u32Value, uiBase, cchWidth, cchPrecision, fFlags);
else
{
char szTmp[64];
cchRet = RTStrFormatNumber(szTmp, u32Value, uiBase, cchWidth, cchPrecision, fFlags);
if ((size_t)cchRet <= cbBuf)
memcpy(pszBuf, szTmp, cchRet + 1);
else
{
if (cbBuf)
{
memcpy(pszBuf, szTmp, cbBuf - 1);
pszBuf[cbBuf - 1] = '\0';
}
cchRet = VERR_BUFFER_OVERFLOW;
}
}
return cchRet;
}
RTDECL(ssize_t) RTStrFormatU64(char *pszBuf, size_t cbBuf, uint64_t u64Value, unsigned int uiBase,
signed int cchWidth, signed int cchPrecision, uint32_t fFlags)
{
fFlags &= ~RTSTR_F_BIT_MASK;
fFlags |= RTSTR_F_64BIT;
ssize_t cchRet;
if (cbBuf >= 64)
cchRet = RTStrFormatNumber(pszBuf, u64Value, uiBase, cchWidth, cchPrecision, fFlags);
else
{
char szTmp[64];
cchRet = RTStrFormatNumber(szTmp, u64Value, uiBase, cchWidth, cchPrecision, fFlags);
if ((size_t)cchRet <= cbBuf)
memcpy(pszBuf, szTmp, cchRet + 1);
else
{
if (cbBuf)
{
memcpy(pszBuf, szTmp, cbBuf - 1);
pszBuf[cbBuf - 1] = '\0';
}
cchRet = VERR_BUFFER_OVERFLOW;
}
}
return cchRet;
}
RTDECL(ssize_t) RTStrFormatU128(char *pszBuf, size_t cbBuf, PCRTUINT128U pu128, unsigned int uiBase,
signed int cchWidth, signed int cchPrecision, uint32_t fFlags)
{
NOREF(cchWidth); NOREF(cchPrecision);
if (uiBase != 16)
fFlags |= RTSTR_F_SPECIAL;
fFlags &= ~RTSTR_F_BIT_MASK;
char szTmp[64+32+32+32];
char *pszTmp = cbBuf >= sizeof(szTmp) ? pszBuf : szTmp;
size_t cchResult = RTStrFormatNumber(pszTmp, pu128->QWords.qw1, 16, 0, 0, fFlags | RTSTR_F_64BIT);
cchResult += RTStrFormatNumber(&pszTmp[cchResult], pu128->QWords.qw0, 16, 8, 0,
(fFlags | RTSTR_F_64BIT | RTSTR_F_ZEROPAD) & ~RTSTR_F_SPECIAL);
if (pszTmp == pszBuf)
return cchResult;
int rc = RTStrCopy(pszBuf, cbBuf, pszTmp);
if (RT_SUCCESS(rc))
return cchResult;
return rc;
}
RTDECL(ssize_t) RTStrFormatU256(char *pszBuf, size_t cbBuf, PCRTUINT256U pu256, unsigned int uiBase,
signed int cchWidth, signed int cchPrecision, uint32_t fFlags)
{
NOREF(cchWidth); NOREF(cchPrecision);
if (uiBase != 16)
fFlags |= RTSTR_F_SPECIAL;
fFlags &= ~RTSTR_F_BIT_MASK;
char szTmp[64+32+32+32];
char *pszTmp = cbBuf >= sizeof(szTmp) ? pszBuf : szTmp;
size_t cchResult = RTStrFormatNumber(pszTmp, pu256->QWords.qw3, 16, 0, 0, fFlags | RTSTR_F_64BIT);
cchResult += RTStrFormatNumber(&pszTmp[cchResult], pu256->QWords.qw2, 16, 8, 0,
(fFlags | RTSTR_F_64BIT | RTSTR_F_ZEROPAD) & ~RTSTR_F_SPECIAL);
cchResult += RTStrFormatNumber(&pszTmp[cchResult], pu256->QWords.qw1, 16, 8, 0,
(fFlags | RTSTR_F_64BIT | RTSTR_F_ZEROPAD) & ~RTSTR_F_SPECIAL);
cchResult += RTStrFormatNumber(&pszTmp[cchResult], pu256->QWords.qw0, 16, 8, 0,
(fFlags | RTSTR_F_64BIT | RTSTR_F_ZEROPAD) & ~RTSTR_F_SPECIAL);
if (pszTmp == pszBuf)
return cchResult;
int rc = RTStrCopy(pszBuf, cbBuf, pszTmp);
if (RT_SUCCESS(rc))
return cchResult;
return rc;
}
RTDECL(ssize_t) RTStrFormatU512(char *pszBuf, size_t cbBuf, PCRTUINT512U pu512, unsigned int uiBase,
signed int cchWidth, signed int cchPrecision, uint32_t fFlags)
{
NOREF(cchWidth); NOREF(cchPrecision);
if (uiBase != 16)
fFlags |= RTSTR_F_SPECIAL;
fFlags &= ~RTSTR_F_BIT_MASK;
char szTmp[64+32+32+32 + 32+32+32+32];
char *pszTmp = cbBuf >= sizeof(szTmp) ? pszBuf : szTmp;
size_t cchResult = RTStrFormatNumber(pszTmp, pu512->QWords.qw7, 16, 0, 0, fFlags | RTSTR_F_64BIT);
cchResult += RTStrFormatNumber(&pszTmp[cchResult], pu512->QWords.qw6, 16, 8, 0,
(fFlags | RTSTR_F_64BIT | RTSTR_F_ZEROPAD) & ~RTSTR_F_SPECIAL);
cchResult += RTStrFormatNumber(&pszTmp[cchResult], pu512->QWords.qw5, 16, 8, 0,
(fFlags | RTSTR_F_64BIT | RTSTR_F_ZEROPAD) & ~RTSTR_F_SPECIAL);
cchResult += RTStrFormatNumber(&pszTmp[cchResult], pu512->QWords.qw4, 16, 8, 0,
(fFlags | RTSTR_F_64BIT | RTSTR_F_ZEROPAD) & ~RTSTR_F_SPECIAL);
cchResult += RTStrFormatNumber(&pszTmp[cchResult], pu512->QWords.qw3, 16, 8, 0,
(fFlags | RTSTR_F_64BIT | RTSTR_F_ZEROPAD) & ~RTSTR_F_SPECIAL);
cchResult += RTStrFormatNumber(&pszTmp[cchResult], pu512->QWords.qw2, 16, 8, 0,
(fFlags | RTSTR_F_64BIT | RTSTR_F_ZEROPAD) & ~RTSTR_F_SPECIAL);
cchResult += RTStrFormatNumber(&pszTmp[cchResult], pu512->QWords.qw1, 16, 8, 0,
(fFlags | RTSTR_F_64BIT | RTSTR_F_ZEROPAD) & ~RTSTR_F_SPECIAL);
cchResult += RTStrFormatNumber(&pszTmp[cchResult], pu512->QWords.qw0, 16, 8, 0,
(fFlags | RTSTR_F_64BIT | RTSTR_F_ZEROPAD) & ~RTSTR_F_SPECIAL);
if (pszTmp == pszBuf)
return cchResult;
int rc = RTStrCopy(pszBuf, cbBuf, pszTmp);
if (RT_SUCCESS(rc))
return cchResult;
return rc;
}
RTDECL(ssize_t) RTStrFormatR80u2(char *pszBuf, size_t cbBuf, PCRTFLOAT80U2 pr80Value, signed int cchWidth,
signed int cchPrecision, uint32_t fFlags)
{
NOREF(cchWidth); NOREF(cchPrecision); NOREF(fFlags);
char szTmp[160];
char *pszTmp = szTmp;
if (pr80Value->s.fSign)
*pszTmp++ = '-';
else
*pszTmp++ = '+';
if (pr80Value->s.uExponent == 0)
{
#ifdef RT_COMPILER_GROKS_64BIT_BITFIELDS
if ( !pr80Value->sj64.u63Fraction
&& pr80Value->sj64.fInteger)
#else
if ( !pr80Value->sj.u32FractionLow
&& !pr80Value->sj.u31FractionHigh
&& pr80Value->sj.fInteger)
#endif
*pszTmp++ = '0';
/* else: Denormal, handled way below. */
}
#ifdef RT_COMPILER_GROKS_64BIT_BITFIELDS
else if (pr80Value->sj64.uExponent == UINT16_C(0x7fff))
#else
else if (pr80Value->sj.uExponent == UINT16_C(0x7fff))
#endif
{
/** @todo Figure out Pseudo inf/nan... */
#ifdef RT_COMPILER_GROKS_64BIT_BITFIELDS
if (pr80Value->sj64.fInteger)
#else
if (pr80Value->sj.fInteger)
#endif
*pszTmp++ = 'P';
#ifdef RT_COMPILER_GROKS_64BIT_BITFIELDS
if (pr80Value->sj64.u63Fraction == 0)
#else
if ( pr80Value->sj.u32FractionLow == 0
&& pr80Value->sj.u31FractionHigh == 0)
#endif
{
*pszTmp++ = 'I';
*pszTmp++ = 'n';
*pszTmp++ = 'f';
}
else
{
*pszTmp++ = 'N';
*pszTmp++ = 'a';
*pszTmp++ = 'N';
}
}
if (pszTmp != &szTmp[1])
*pszTmp = '\0';
else
{
#ifdef RT_COMPILER_GROKS_64BIT_BITFIELDS
*pszTmp++ = pr80Value->sj64.fInteger ? '1' : '0';
#else
*pszTmp++ = pr80Value->sj.fInteger ? '1' : '0';
#endif
*pszTmp++ = 'm';
#ifdef RT_COMPILER_GROKS_64BIT_BITFIELDS
pszTmp += RTStrFormatNumber(pszTmp, pr80Value->sj64.u63Fraction, 16, 2+16, 0,
RTSTR_F_SPECIAL | RTSTR_F_ZEROPAD | RTSTR_F_64BIT);
#else
pszTmp += RTStrFormatNumber(pszTmp, RT_MAKE_U64(pr80Value->sj.u32FractionLow, pr80Value->sj.u31FractionHigh), 16, 2+16, 0,
RTSTR_F_SPECIAL | RTSTR_F_ZEROPAD | RTSTR_F_64BIT);
#endif
*pszTmp++ = 'e';
#ifdef RT_COMPILER_GROKS_64BIT_BITFIELDS
pszTmp += RTStrFormatNumber(pszTmp, (int32_t)pr80Value->sj64.uExponent - 16383, 10, 0, 0,
RTSTR_F_ZEROPAD | RTSTR_F_32BIT | RTSTR_F_VALSIGNED);
#else
pszTmp += RTStrFormatNumber(pszTmp, (int32_t)pr80Value->sj.uExponent - 16383, 10, 0, 0,
RTSTR_F_ZEROPAD | RTSTR_F_32BIT | RTSTR_F_VALSIGNED);
#endif
}
/*
* Copy out the result.
*/
ssize_t cchRet = pszTmp - &szTmp[0];
if ((size_t)cchRet <= cbBuf)
memcpy(pszBuf, szTmp, cchRet + 1);
else
{
if (cbBuf)
{
memcpy(pszBuf, szTmp, cbBuf - 1);
pszBuf[cbBuf - 1] = '\0';
}
cchRet = VERR_BUFFER_OVERFLOW;
}
return cchRet;
}
RTDECL(ssize_t) RTStrFormatR80(char *pszBuf, size_t cbBuf, PCRTFLOAT80U pr80Value, signed int cchWidth,
signed int cchPrecision, uint32_t fFlags)
{
RTFLOAT80U2 r80ValueU2;
RT_ZERO(r80ValueU2);
r80ValueU2.s.fSign = pr80Value->s.fSign;
r80ValueU2.s.uExponent = pr80Value->s.uExponent;
r80ValueU2.s.u64Mantissa = pr80Value->s.u64Mantissa;
return RTStrFormatR80u2(pszBuf, cbBuf, &r80ValueU2, cchWidth, cchPrecision, fFlags);
}
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