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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 
     26 int
     27 getoldopt(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