/*      $NetBSD: parse_args.c,v 1.11 2005/12/11 12:18:19 christos Exp $ */

/*-
* Copyright (c) 1995 Theo de Raadt
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/

#include <sys/param.h>
#include <sys/reboot.h>
#include <sys/disklabel.h>
#include <machine/prom.h>
#include <sys/boot_flag.h>

#include <lib/libsa/stand.h>
#include "libsa.h"

#define KERNEL_NAME "netbsd"

void
parse_args(char **filep, int *flagp, int *partp)
{
       char *name = KERNEL_NAME, *ptr;
       int howto = 0, part = 0;
       char c;

       if (bugargs.arg_start != bugargs.arg_end) {
               ptr = bugargs.arg_start;
               while ((c = *ptr)) {
                       while (c == ' ')
                               c = *++ptr;
                       if (c == '\0')
                               return;
                       if (c != '-') {
                               if (ptr[1] == ':') {
                                       part = (int) (*ptr - 'A');
                                       if (part >= MAXPARTITIONS)
                                               part -= 0x20;
                                       if (part < 0 || part >= MAXPARTITIONS)
                                               part = 0;
                                       if (ptr[2] == ' ' || ptr[2] == '\0') {
                                               ptr += 2;
                                               continue;
                                       }
                                       name = &(ptr[2]);
                               } else
                                       name = ptr;
                               while ((c = *++ptr) && c != ' ')
                                       ;
                               if (c)
                                       *ptr++ = 0;
                               continue;
                       }
                       while ((c = *++ptr) && c != ' ')
                               BOOT_FLAG(c, howto);
               }
       }
       *flagp = howto;
       *filep = name;
       *partp = part;
}