diff options
Diffstat (limited to 'src/VBox/Runtime/common/path/RTPathParsedReassemble.cpp')
| -rw-r--r-- | src/VBox/Runtime/common/path/RTPathParsedReassemble.cpp | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/path/RTPathParsedReassemble.cpp b/src/VBox/Runtime/common/path/RTPathParsedReassemble.cpp new file mode 100644 index 00000000..5043f10b --- /dev/null +++ b/src/VBox/Runtime/common/path/RTPathParsedReassemble.cpp @@ -0,0 +1,161 @@ +/* $Id: RTPathParsedReassemble.cpp $ */ +/** @file + * IPRT - RTPathParsedReassemble. + */ + +/* + * Copyright (C) 2013-2022 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/path.h> + +#include <iprt/assert.h> +#include <iprt/errcore.h> +#include <iprt/string.h> + + +RTDECL(int) RTPathParsedReassemble(const char *pszSrcPath, PRTPATHPARSED pParsed, uint32_t fFlags, + char *pszDstPath, size_t cbDstPath) +{ + /* + * Input validation. + */ + AssertPtrReturn(pszSrcPath, VERR_INVALID_POINTER); + AssertPtrReturn(pParsed, VERR_INVALID_POINTER); + AssertReturn(pParsed->cComps > 0, VERR_INVALID_PARAMETER); + AssertReturn(RTPATH_STR_F_IS_VALID(fFlags, 0) && !(fFlags & RTPATH_STR_F_MIDDLE), VERR_INVALID_FLAGS); + AssertPtrReturn(pszDstPath, VERR_INVALID_POINTER); + + /* + * Recalculate the length. + */ + uint32_t const cComps = pParsed->cComps; + uint32_t idxComp = 0; + uint32_t cchPath = 0; + if (RTPATH_PROP_HAS_ROOT_SPEC(pParsed->fProps)) + { + cchPath = pParsed->aComps[0].cch; + idxComp++; + } + bool fNeedSlash = false; + while (idxComp < cComps) + { + uint32_t const cchComp = pParsed->aComps[idxComp].cch; + idxComp++; + if (cchComp > 0) + { + cchPath += cchComp + fNeedSlash; + fNeedSlash = true; + } + } + if ((pParsed->fProps & RTPATH_PROP_DIR_SLASH) && fNeedSlash) + cchPath += 1; + pParsed->cchPath = cchPath; + if (cbDstPath > cchPath) + { /* likely */ } + else + { + if (cbDstPath) + *pszDstPath = '\0'; + return VERR_BUFFER_OVERFLOW; + } + + /* + * Figure which slash to use. + */ + char chSlash; + switch (fFlags & RTPATH_STR_F_STYLE_MASK) + { + case RTPATH_STR_F_STYLE_HOST: + chSlash = RTPATH_SLASH; + break; + + case RTPATH_STR_F_STYLE_DOS: + chSlash = '\\'; + break; + + case RTPATH_STR_F_STYLE_UNIX: + chSlash = '/'; + break; + + default: + AssertFailedReturn(VERR_INVALID_FLAGS); /* impossible */ + } + + /* + * Do the joining. + * Note! Using memmove here as we want to support pszSrcPath == pszDstPath. + */ + char *pszDst = pszDstPath; + idxComp = 0; + fNeedSlash = false; + + if (RTPATH_PROP_HAS_ROOT_SPEC(pParsed->fProps)) + { + uint32_t cchComp = pParsed->aComps[0].cch; + memmove(pszDst, &pszSrcPath[pParsed->aComps[0].off], cchComp); + + /* fix the slashes (harmless for unix style) */ + char chOtherSlash = chSlash == '\\' ? '/' : '\\'; + while (cchComp-- > 0) + { + if (*pszDst == chOtherSlash) + *pszDst = chSlash; + pszDst++; + } + idxComp = 1; + } + + while (idxComp < cComps) + { + uint32_t const cchComp = pParsed->aComps[idxComp].cch; + if (cchComp > 0) + { + if (fNeedSlash) + *pszDst++ = chSlash; + fNeedSlash = true; + memmove(pszDst, &pszSrcPath[pParsed->aComps[idxComp].off], cchComp); + pszDst += cchComp; + } + idxComp++; + } + + if ((pParsed->fProps & RTPATH_PROP_DIR_SLASH) && fNeedSlash) + *pszDst++ = chSlash; + *pszDst = '\0'; + + return VINF_SUCCESS; +} + |