xref: /titanic_51/usr/src/cmd/getopt/getopt.c (revision 8eea8e29cc4374d1ee24c25a07f45af132db3499)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright (c) 2000 Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	  All Rights Reserved  	*/
29 
30 
31 #pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.7	*/
32 
33 #include <stdio.h>
34 #include <locale.h>
35 #include <stdlib.h>
36 #include <string.h>
37 
38 #define	BLOCKLEN	5120
39 
40 /* incr doesn't include a null termination */
41 #define	ALLOC_BUFMEM(buf, size, incr) \
42 	{ \
43 		size_t	len = strlen(buf); \
44 		if ((len + incr) >= size) { \
45 			size = len + incr + 1; \
46 			if ((buf = (char *)realloc((void *)buf, size)) \
47 			    == NULL) { \
48 				(void) fputs( \
49 				gettext("getopt: Out of memory\n"), stderr); \
50 				exit(2); \
51 			} \
52 		} \
53 	}
54 
55 void
56 main(int argc, char **argv)
57 {
58 	int	c;
59 	int	errflg = 0;
60 	char	tmpstr[4];
61 	char	*outstr;
62 	char	*goarg;
63 	size_t	bufsize;
64 
65 	(void) setlocale(LC_ALL, "");
66 #if !defined(TEXT_DOMAIN)	/* Should be defined by cc -D */
67 #define	TEXT_DOMAIN "SYS_TEST"	/* Use this only if it weren't */
68 #endif
69 	(void) textdomain(TEXT_DOMAIN);
70 
71 	if (argc < 2) {
72 		(void) fputs(gettext("usage: getopt legal-args $*\n"), stderr);
73 		exit(2);
74 	}
75 
76 	goarg = argv[1];
77 	argv[1] = argv[0];
78 	argv++;
79 	argc--;
80 
81 	bufsize = BLOCKLEN;
82 	if ((outstr = (char *)malloc(bufsize)) == NULL) {
83 		(void) fputs(gettext("getopt: Out of memory\n"), stderr);
84 		exit(2);
85 	}
86 	outstr[0] = '\0';
87 
88 	while ((c = getopt(argc, argv, goarg)) != EOF) {
89 		if (c == '?') {
90 			errflg++;
91 			continue;
92 		}
93 
94 		tmpstr[0] = '-';
95 		tmpstr[1] = (char)c;
96 		tmpstr[2] = ' ';
97 		tmpstr[3] = '\0';
98 
99 		/* If the buffer is full, expand it as appropriate */
100 		ALLOC_BUFMEM(outstr, bufsize, 3);
101 
102 		(void) strcat(outstr, tmpstr);
103 
104 		if (*(strchr(goarg, c)+1) == ':') {
105 			ALLOC_BUFMEM(outstr, bufsize, strlen(optarg)+1)
106 			(void) strcat(outstr, optarg);
107 			(void) strcat(outstr, " ");
108 		}
109 	}
110 
111 	if (errflg) {
112 		exit(2);
113 	}
114 
115 	ALLOC_BUFMEM(outstr, bufsize, 3)
116 	(void) strcat(outstr, "-- ");
117 	while (optind < argc) {
118 		ALLOC_BUFMEM(outstr, bufsize, strlen(argv[optind])+1)
119 		(void) strcat(outstr, argv[optind++]);
120 		(void) strcat(outstr, " ");
121 	}
122 
123 	(void) printf("%s\n", outstr);
124 	exit(0);
125 }
126