Index: /trunk/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-StrPrintf.c
===================================================================
--- /trunk/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-StrPrintf.c	(revision 58810)
+++ /trunk/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-StrPrintf.c	(revision 58810)
@@ -0,0 +1,93 @@
+/* $Id$ */
+/** @file
+ * BS3Kit - Bs3StrPrintf, Bs3StrPrintfV
+ */
+
+/*
+ * Copyright (C) 2007-2015 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 "bs3kit-template-header.h"
+#include <iprt/ctype.h>
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+typedef struct BS3STRPRINTFSTATE
+{
+    /** Current buffer position. */
+    char   *pchBuf;
+    /** Number of bytes left in the buffer.  */
+    size_t  cchLeft;
+} BS3STRPRINTFSTATE;
+typedef BS3STRPRINTFSTATE BS3_FAR *PBS3STRPRINTFSTATE;
+
+
+
+BS3_DECL(size_t) bs3StrPrintfFmtOutput(char ch, void BS3_FAR *pvUser)
+{
+    PBS3STRPRINTFSTATE pState = (PBS3STRPRINTFSTATE)pvUser;
+    if (ch)
+    {
+        /* Put to the buffer if there is place for this char and a terminator. */
+        if (pState->cchLeft > 1)
+        {
+            pState->cchLeft--;
+            *pState->pchBuf++ = ch;
+        }
+
+        /* Always return 1. */
+        return 1;
+    }
+
+    /* Terminate the string. */
+    if (pState->cchLeft)
+    {
+        pState->cchLeft--;
+        *pState->pchBuf++ = '\0';
+    }
+    return 0;
+}
+
+
+BS3_DECL(size_t) Bs3StrPrintfV(char BS3_FAR *pszBuf, size_t cchBuf, const char BS3_FAR *pszFormat, va_list va)
+{
+    BS3STRPRINTFSTATE State;
+    State.pchBuf  = pszBuf;
+    State.cchLeft = cchBuf;
+    return Bs3StrFormatV(pszFormat, va, bs3StrPrintfFmtOutput, &State);
+}
+
+
+BS3_DECL(size_t) Bs3StrPrintf(char BS3_FAR *pszBuf, size_t cchBuf, const char BS3_FAR *pszFormat, ...)
+{
+    size_t cchRet;
+    va_list va;
+    va_start(va, pszFormat);
+    cchRet = Bs3StrPrintfV(pszBuf, cchBuf, pszFormat, va);
+    va_end(va);
+    return cchRet;
+}
+