92 lines
1.8 KiB
C
92 lines
1.8 KiB
C
/* $NetBSD: getoldopt.c,v 1.23 2012/08/09 11:05:59 christos Exp $ */
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/*
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* Plug-compatible replacement for getopt() for parsing tar-like
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* arguments. If the first argument begins with "-", it uses getopt;
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* otherwise, it uses the old rules used by tar, dump, and ps.
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*
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* Written 25 August 1985 by John Gilmore (ihnp4!hoptoad!gnu) and placed
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* in the Public Domain for your edification and enjoyment.
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*/
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#if HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#endif
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#include <sys/cdefs.h>
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#if !defined(lint)
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__RCSID("$NetBSD: getoldopt.c,v 1.23 2012/08/09 11:05:59 christos Exp $");
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#endif /* not lint */
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#if HAVE_NBTOOL_CONFIG_H
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#include "compat_getopt.h"
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#else
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#include <getopt.h>
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdint.h>
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#include <sys/stat.h>
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#include "pax.h"
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#include "extern.h"
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int
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getoldopt(int argc, char **argv, const char *optstring,
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struct option *longopts, int *idx)
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{
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static char *key; /* Points to next keyletter */
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static char use_getopt; /* !=0 if argv[1][0] was '-' */
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char c;
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char *place;
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optarg = NULL;
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if (key == NULL) { /* First time */
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if (argc < 2) return -1;
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key = argv[1];
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if (*key == '-')
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use_getopt++;
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else
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optind = 2;
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}
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c = '\0';
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if (!use_getopt) {
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c = *key++;
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if (c == '\0') {
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key--;
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use_getopt = 1;
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}
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}
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if (use_getopt) {
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if (longopts != NULL) {
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return getopt_long(argc, argv, optstring,
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longopts, idx);
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} else {
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return getopt(argc, argv, optstring);
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}
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}
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place = strchr(optstring, c);
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if (place == NULL || c == ':') {
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fprintf(stderr, "%s: unknown option %c\n", argv[0], c);
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return '?';
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}
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place++;
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if (*place == ':') {
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if (optind < argc) {
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optarg = argv[optind];
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optind++;
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} else {
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fprintf(stderr, "%s: %c argument missing\n",
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argv[0], c);
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return '?';
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}
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}
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return c;
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}
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