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81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/*----------------------------------------------------------------------
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Replacement for Unix "getopt()", for DOS/Windows/etc.
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getopt.c 1.3 2003/09/17 16:17:59
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Copyright (C) 1998, 2003 by David A. Hinds -- All Rights Reserved
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This file is part of ASPEX.
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ASPEX is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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ASPEX is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with ASPEX; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----------------------------------------------------------------------*/
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#include "string.h"
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#include "stdio.h"
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#include "getopt.h"
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char *optarg;
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int optind = 1, opterr, optopt;
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int pos = 0;
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int getopt(int argc, char *argv[], const char *optstring)
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{
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//static int pos = 0;
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char *str;
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if (pos == 0) {
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if ((optind >= argc) || (*argv[optind] != '-'))
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return EOF;
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pos = 1;
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if (argv[optind][pos] == '\0')
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return EOF;
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}
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str = strchr(optstring, argv[optind][pos]);
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if (str == NULL) {
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optopt = argv[optind][pos];
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if (opterr)
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fprintf(stderr, "%s: illegal option -- %c\n", argv[0],
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optopt);
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return '?';
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}
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if (str[1] == ':') {
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if (argv[optind][pos+1] != '\0') {
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optarg = &argv[optind][pos+1];
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return *str;
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}
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optind++;
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if (optind >= argc) {
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optopt = *str;
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if (opterr)
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fprintf(stderr, "%s: option requires an argument -- %c\n",
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argv[0], optopt);
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return '?';
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}
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optarg = argv[optind];
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optind++; pos = 0;
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return *str;
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}
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else {
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pos++;
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if (argv[optind][pos] == '\0') {
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optind++;
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pos = 0;
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}
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return *str;
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}
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}
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