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