/*
 * Copyright (c) 2023 Rumbledethumps
 *
 * SPDX-License-Identifier: Zlib
 * SPDX-License-Identifier: BSD-3-Clause
 * SPDX-License-Identifier: Unlicense
 */

#include <rp6502.h>
#include <errno.h>
#include <string.h>

unsigned char __fastcall__ _sysrename(const char *oldpath, const char *newpath)
{
    size_t oldpathlen, newpathlen;
    oldpathlen = strlen(oldpath);
    newpathlen = strlen(newpath);
    if (oldpathlen + newpathlen > 254)
    {
        return _mappederrno(EINVAL);
    }
    while (oldpathlen)
    {
        ria_push_char(oldpath[--oldpathlen]);
    }
    ria_push_char(0);
    while (newpathlen)
    {
        ria_push_char(newpath[--newpathlen]);
    }
    return ria_call_int_errno(RIA_OP_RENAME);
}