/* $Id: RTPathJoinA.cpp $ */
/** @file
 * IPRT - RTPathJoinA.
 */

/*
 * Copyright (C) 2010-2023 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/path.h>
#include <iprt/assert.h>
#include <iprt/errcore.h>
#include <iprt/string.h>




RTDECL(char *) RTPathJoinA(const char *pszPathSrc, const char *pszAppend)
{
    AssertPtr(pszAppend);
    AssertPtr(pszPathSrc);

    /*
     * The easy way: Allocate a buffer and call RTPathAppend till it succeeds.
     */
    size_t cchPathSrc = strlen(pszPathSrc);
    size_t cchAppend  = strlen(pszAppend);
    size_t cbPathDst  = cchPathSrc + cchAppend + 4;
    char *pszPathDst  = RTStrAlloc(cbPathDst);
    if (pszPathDst)
    {
        memcpy(pszPathDst, pszPathSrc, cchPathSrc + 1);
        int rc = RTPathAppend(pszPathDst, cbPathDst, pszAppend);
        if (RT_FAILURE(rc))
        {
            /* This shouldn't happen, but if it does try again with a larger buffer... */
            AssertRC(rc);

            rc = RTStrRealloc(&pszPathDst, cbPathDst * 2);
            if (RT_SUCCESS(rc))
                rc = RTPathAppend(pszPathDst, cbPathDst, pszAppend);
            if (RT_FAILURE(rc))
            {
                RTStrFree(pszPathDst);
                pszPathDst = NULL;
            }
        }
    }
    return pszPathDst;
}