135 lines
3.4 KiB
C
135 lines
3.4 KiB
C
/* $NetBSD: parseutils.c,v 1.1 1997/09/17 17:13:03 drochner Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1996, 1997
|
|
* Matthias Drochner. All rights reserved.
|
|
* Copyright (c) 1996, 1997
|
|
* Perry E. Metzger. All rights reserved.
|
|
* Copyright (c) 1997
|
|
* Jason R. Thorpe. All rights reserved
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgements:
|
|
* This product includes software developed for the NetBSD Project
|
|
* by Matthias Drochner.
|
|
* This product includes software developed for the NetBSD Project
|
|
* by Perry E. Metzger.
|
|
* 4. The names of the authors may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* 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 <lib/libkern/libkern.h>
|
|
#include <lib/libsa/stand.h>
|
|
|
|
#include "libi386.h"
|
|
|
|
/*
|
|
* chops the head from the arguments and returns the arguments if any,
|
|
* or possibly an empty string.
|
|
*/
|
|
char *
|
|
gettrailer(arg)
|
|
char *arg;
|
|
{
|
|
char *options;
|
|
|
|
if ((options = strchr(arg, ' ')) == NULL)
|
|
return ("");
|
|
else
|
|
*options++ = '\0';
|
|
|
|
/* trim leading blanks */
|
|
while (*options && *options == ' ')
|
|
options++;
|
|
|
|
return (options);
|
|
}
|
|
|
|
int
|
|
parseopts(opts, howto)
|
|
char *opts;
|
|
int *howto;
|
|
{
|
|
int r, tmpopt = 0;
|
|
|
|
opts++; /* skip - */
|
|
while (*opts && *opts != ' ') {
|
|
r = netbsd_opt(*opts);
|
|
if (r == -1) {
|
|
printf("-%c: unknown flag\n", *opts);
|
|
command_help(NULL);
|
|
return(0);
|
|
}
|
|
tmpopt |= r;
|
|
opts++;
|
|
}
|
|
|
|
*howto = tmpopt;
|
|
return(1);
|
|
}
|
|
|
|
int
|
|
parseboot(arg, filename, howto)
|
|
char *arg;
|
|
char **filename;
|
|
int *howto;
|
|
{
|
|
char *opts = NULL;
|
|
|
|
*filename = 0;
|
|
*howto = 0;
|
|
|
|
/* if there were no arguments */
|
|
if (!*arg)
|
|
return(1);
|
|
|
|
/* format is... */
|
|
/* [[xxNx:]filename] [-adrs] */
|
|
|
|
/* check for just args */
|
|
if (arg[0] == '-')
|
|
opts = arg;
|
|
else {
|
|
/* there's a file name */
|
|
*filename = arg;
|
|
|
|
opts = gettrailer(arg);
|
|
if (!*opts)
|
|
opts = NULL;
|
|
else if (*opts != '-') {
|
|
printf("invalid arguments\n");
|
|
command_help(NULL);
|
|
return(0);
|
|
}
|
|
}
|
|
|
|
/* at this point, we have dealt with filenames. */
|
|
|
|
/* now, deal with options */
|
|
if (opts) {
|
|
if (parseopts(opts, howto) == 0)
|
|
return(0);
|
|
}
|
|
|
|
return(1);
|
|
}
|