xref: /illumos-gate/usr/src/lib/libxcurses/src/libc/mks/m_cmdnam.c (revision 55fea89dcaa64928bed4327112404dcb3e07b79f)
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) 1996, by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 /*
28  * m_cmdname -- MKS specific library routine.
29  *
30  * Copyright 1985, 1992 by Mortice Kern Systems Inc.  All rights reserved.
31  *
32  */
33 
34 #ifdef M_RCSID
35 #ifndef lint
36 static char rcsID[] = "$Id: m_cmdnam.c 1.16 1993/02/15 14:12:23 fredw Exp $";
37 #endif
38 #endif
39 
40 #include <mks.h>
41 #include <ctype.h>
42 #include <string.h>
43 
44 /*f
45  *  MKS private routine to hide o/s dependencies in filenames in argv[0];
46  *  cmdname(argv[0]) returns a modified argv[0] which contains only the command
47  *  name, prefix, suffix stripped, and lower cased on case-less systems.
48  */
49 LDEFN char *
50 m_cmdname(cmd)
51 char *cmd;
52 {
53 #if defined(DOS) || defined(OS2) || defined(NT)
54 	register char *ap;
55 
56 	/* Lowercase command name on DOS, OS2 and NT. */
57 	/* The shell needs the whole name lowered. */
58 	for (ap = cmd; *ap; ap++)
59 		if (isupper(*ap))
60 			*ap = _tolower(*ap);
61 
62 	cmd = basename(cmd);
63 
64 	/* Strip .com/.exe/.??? suffix on DOS and OS/2 */
65 	if ((ap = strrchr(cmd, '.')) != NULL)
66 		*ap = '\0';
67 
68 	return (cmd);
69 #else
70 	return (basename(cmd));
71 #endif
72 }
73