getoldopt.c revision 1.17 
1/*	$NetBSD: getoldopt.c,v 1.17 2003/06/23 13:15:15 christos Exp $	*/
2
3/*
4 * Plug-compatible replacement for getopt() for parsing tar-like
5 * arguments.  If the first argument begins with "-", it uses getopt;
6 * otherwise, it uses the old rules used by tar, dump, and ps.
7 *
8 * Written 25 August 1985 by John Gilmore (ihnp4!hoptoad!gnu) and placed
9 * in the Public Domain for your edification and enjoyment.
10 */
11
12#include <sys/cdefs.h>
13#if defined(__RCSID) && !defined(lint)
14__RCSID("$NetBSD: getoldopt.c,v 1.17 2003/06/23 13:15:15 christos Exp $");
15#endif /* not lint */
16
17#include <getopt.h>
18#include <stdio.h>
19#include <string.h>
20#include <stdlib.h>
21#include <unistd.h>
22#include <sys/stat.h>
23#include "pax.h"
24#include "extern.h"
25
26int
27getoldopt(int argc, char **argv, const char *optstring,
28	struct option *longopts, int *idx)
29{
30	static char	*key;		/* Points to next keyletter */
31	static char	argv1[64];
32
33	if (key == NULL) {		/* First time */
34		if (argc < 2) return -1;
35		key = argv[1];
36		if (*key != '-')
37			(void)snprintf(argv[1] = argv1, sizeof(argv1), "-%s",
38			    key);
39	}
40
41	if (longopts != NULL) {
42		return getopt_long(argc, argv, optstring,
43		    longopts, idx);
44	} else {
45		return getopt(argc, argv, optstring);
46	}
47}
48