1 files changed, 95 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/string/RTStrPrintHexBytes.cpp b/src/VBox/Runtime/common/string/RTStrPrintHexBytes.cpp
new file mode 100644
index 00000000..f82b8791
--- /dev/null
+++ b/src/VBox/Runtime/common/string/RTStrPrintHexBytes.cpp
@@ -0,0 +1,95 @@
+/* $Id: RTStrPrintHexBytes.cpp $ */
+/** @file
+ * IPRT - RTStrPrintHexBytes.
+ */
+
+/*
+ * Copyright (C) 2009-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox 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.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+*   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;
+}
+