/* $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 #include #include #include #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; }