os_rpath.c

/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 1997-2005
 *      Sleepycat Software.  All rights reserved.
 *
 * $Id: os_rpath.c,v 12.1 2005/06/16 20:23:26 bostic Exp $
 */

#include "db_config.h"

#ifndef NO_SYSTEM_INCLUDES
#include <string.h>
#endif

#include "db_int.h"
#ifdef HAVE_VXWORKS
#include "iosLib.h"
#endif

/*
 * __db_rpath --
 *      Return the last path separator in the path or NULL if none found.
 *
 * PUBLIC: char *__db_rpath __P((const char *));
 */
char *
__db_rpath(path)
        const char *path;
{
        const char *s, *last;
#ifdef HAVE_VXWORKS
        DEV_HDR *dummy;
        char *ptail;

        /*
         * VxWorks devices can be rooted at any name.  We want to
         * skip over the device name and not take into account any
         * PATH_SEPARATOR characters that might be in that name.
         *
         * XXX [#2393]
         * VxWorks supports having a filename directly follow a device
         * name with no separator.  I.e. to access a file 'xxx' in
         * the top level directory of a device mounted at "mydrive"
         * you could say "mydrivexxx" or "mydrive/xxx" or "mydrive\xxx".
         * We do not support the first usage here.
         * XXX
         */
        if ((dummy = iosDevFind((char *)path, &ptail)) == NULL)
                s = path;
        else
                s = ptail;
#else
        s = path;
#endif

        last = NULL;
        if (PATH_SEPARATOR[1] != '\0') {
                for (; s[0] != '\0'; ++s)
                        if (strchr(PATH_SEPARATOR, s[0]) != NULL)
                                last = s;
        } else
                for (; s[0] != '\0'; ++s)
                        if (s[0] == PATH_SEPARATOR[0])
                                last = s;
        return ((char *)last);
}

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