VirtualBox

source: vbox/trunk/src/VBox/Runtime/common/string/RTStrPrintHexBytes.cpp@ 81106

Last change on this file since 81106 was 76553, checked in by vboxsync, 6 years ago

scm --update-copyright-year

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 3.2 KB
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1/* $Id: RTStrPrintHexBytes.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
2/** @file
3 * IPRT - RTStrPrintHexBytes.
4 */
5
6/*
7 * Copyright (C) 2009-2019 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27
28/*********************************************************************************************************************************
29* Header Files *
30*********************************************************************************************************************************/
31#include "internal/iprt.h"
32#include <iprt/string.h>
33
34#include <iprt/assert.h>
35#include <iprt/errcore.h>
36
37
38RTDECL(int) RTStrPrintHexBytes(char *pszBuf, size_t cbBuf, void const *pv, size_t cb, uint32_t fFlags)
39{
40 AssertReturn( !(fFlags & ~(RTSTRPRINTHEXBYTES_F_UPPER | RTSTRPRINTHEXBYTES_F_SEP_SPACE | RTSTRPRINTHEXBYTES_F_SEP_COLON))
41 && (fFlags & (RTSTRPRINTHEXBYTES_F_SEP_SPACE | RTSTRPRINTHEXBYTES_F_SEP_COLON))
42 != (RTSTRPRINTHEXBYTES_F_SEP_SPACE | RTSTRPRINTHEXBYTES_F_SEP_COLON),
43 VERR_INVALID_FLAGS);
44 AssertPtrReturn(pszBuf, VERR_INVALID_POINTER);
45 AssertReturn(cb * 2 >= cb, VERR_BUFFER_OVERFLOW);
46 char const chSep = fFlags & RTSTRPRINTHEXBYTES_F_SEP_SPACE ? ' '
47 : fFlags & RTSTRPRINTHEXBYTES_F_SEP_COLON ? ':' : '\0';
48 AssertReturn(cbBuf >= cb * (2 + (chSep != '\0')) - (chSep != '\0') + 1, VERR_BUFFER_OVERFLOW);
49 if (cb)
50 AssertPtrReturn(pv, VERR_INVALID_POINTER);
51
52 static char const s_szHexDigitsLower[17] = "0123456789abcdef";
53 static char const s_szHexDigitsUpper[17] = "0123456789ABCDEF";
54 const char *pszHexDigits = !(fFlags & RTSTRPRINTHEXBYTES_F_UPPER) ? s_szHexDigitsLower : s_szHexDigitsUpper;
55
56 uint8_t const *pb = (uint8_t const *)pv;
57
58 if (!chSep)
59 {
60 while (cb-- > 0)
61 {
62 uint8_t b = *pb++;
63 *pszBuf++ = pszHexDigits[b >> 4];
64 *pszBuf++ = pszHexDigits[b & 0xf];
65 }
66 }
67 else if (cb-- > 0)
68 {
69 uint8_t b = *pb++;
70 *pszBuf++ = pszHexDigits[b >> 4];
71 *pszBuf++ = pszHexDigits[b & 0xf];
72
73 while (cb-- > 0)
74 {
75 b = *pb++;
76 *pszBuf++ = chSep;
77 *pszBuf++ = pszHexDigits[b >> 4];
78 *pszBuf++ = pszHexDigits[b & 0xf];
79 }
80 }
81
82 *pszBuf = '\0';
83 return VINF_SUCCESS;
84}
85
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