/* $NetBSD: parseutils.c,v 1.4 2024/01/07 07:58:34 isaki Exp $ */ /* * from /sys/arch/i386/lib/parseutils.c * NetBSD: parseutils.c,v 1.3 2000/09/24 12:32:35 jdolecek 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 #include #include #include "libx68k.h" /* * chops the head from the arguments and returns the arguments if any, * or possibly an empty string. */ char * gettrailer(char *arg) { char *options; if ((options = strchr(arg, ' ')) == NULL) return ""; else *options++ = '\0'; /* trim leading blanks */ while (*options == ' ') options++; return options; } int parseopts(const char *opts, int *howto) { int r, tmpopt = 0; opts++; /* skip - */ while (*opts && *opts != ' ') { r = 0; BOOT_FLAG(*opts, r); if (r == 0) { printf("-%c: unknown flag\n", *opts); return 0; } tmpopt |= r; opts++; } *howto = tmpopt; return 1; } int parseboot(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] [-adqsv] */ /* 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"); 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; }