1 files changed, 84 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/path/RTPathCopyComponents.cpp b/src/VBox/Runtime/common/path/RTPathCopyComponents.cpp
new file mode 100644
index 00000000..d14ad040
--- /dev/null
+++ b/src/VBox/Runtime/common/path/RTPathCopyComponents.cpp
@@ -0,0 +1,84 @@
+/* $Id: RTPathCopyComponents.cpp $ */
+/** @file
+ * IPRT - RTPathCountComponents
+ */
+
+/*
+ * 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                                                                                                                 *
+*********************************************************************************************************************************/
+#include "internal/iprt.h"
+#include <iprt/path.h>
+
+#include <iprt/assert.h>
+#include <iprt/errcore.h>
+#include <iprt/string.h>
+#include "internal/path.h"
+
+
+RTDECL(int) RTPathCopyComponents(char *pszDst, size_t cbDst, const char *pszSrc, size_t cComponents)
+{
+    /*
+     * Quick input validation.
+     */
+    AssertPtr(pszDst);
+    AssertPtr(pszSrc);
+    if (cbDst == 0)
+        return VERR_BUFFER_OVERFLOW;
+
+    /*
+     * Fend of the simple case where nothing is wanted.
+     */
+    if (cComponents == 0)
+    {
+        *pszDst = '\0';
+        return VINF_SUCCESS;
+    }
+
+    /*
+     * Parse into the path until we've counted the desired number of objects
+     * or hit the end.
+     */
+    size_t off = rtPathRootSpecLen(pszSrc);
+    size_t c   = off != 0;
+    while (c < cComponents && pszSrc[off])
+    {
+        c++;
+        while (!RTPATH_IS_SLASH(pszSrc[off]) && pszSrc[off])
+            off++;
+        while (RTPATH_IS_SLASH(pszSrc[off]))
+            off++;
+    }
+
+    /*
+     * Copy up to but not including 'off'.
+     */
+    if (off >= cbDst)
+        return VERR_BUFFER_OVERFLOW;
+
+    memcpy(pszDst, pszSrc, off);
+    pszDst[off] = '\0';
+    return VINF_SUCCESS;
+}
+