xref: /onnv-gate/usr/src/lib/libcurses/screen/slk_set.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
24*0Sstevel@tonic-gate  * Use is subject to license terms.
25*0Sstevel@tonic-gate  */
26*0Sstevel@tonic-gate 
27*0Sstevel@tonic-gate /*	Copyright (c) 1988 AT&T	*/
28*0Sstevel@tonic-gate /*	  All Rights Reserved	*/
29*0Sstevel@tonic-gate 
30*0Sstevel@tonic-gate /*
31*0Sstevel@tonic-gate  * University Copyright- Copyright (c) 1982, 1986, 1988
32*0Sstevel@tonic-gate  * The Regents of the University of California
33*0Sstevel@tonic-gate  * All Rights Reserved
34*0Sstevel@tonic-gate  *
35*0Sstevel@tonic-gate  * University Acknowledgment- Portions of this document are derived from
36*0Sstevel@tonic-gate  * software developed by the University of California, Berkeley, and its
37*0Sstevel@tonic-gate  * contributors.
38*0Sstevel@tonic-gate  */
39*0Sstevel@tonic-gate 
40*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
41*0Sstevel@tonic-gate 
42*0Sstevel@tonic-gate /*LINTLIBRARY*/
43*0Sstevel@tonic-gate 
44*0Sstevel@tonic-gate #include	<sys/types.h>
45*0Sstevel@tonic-gate #include	<string.h>
46*0Sstevel@tonic-gate #include	<unistd.h>
47*0Sstevel@tonic-gate #include	"curses_inc.h"
48*0Sstevel@tonic-gate 
49*0Sstevel@tonic-gate /*
50*0Sstevel@tonic-gate  * Set a soft label.
51*0Sstevel@tonic-gate  *
52*0Sstevel@tonic-gate  * n:	label number
53*0Sstevel@tonic-gate  * lab:	the string
54*0Sstevel@tonic-gate  * f:	0, 1, 2 for left, center, right-justification
55*0Sstevel@tonic-gate  */
56*0Sstevel@tonic-gate 
57*0Sstevel@tonic-gate int
slk_set(int n,char * lab,int f)58*0Sstevel@tonic-gate slk_set(int n, char *lab, int f)
59*0Sstevel@tonic-gate {
60*0Sstevel@tonic-gate 	SLK_MAP	*slk = SP->slk;
61*0Sstevel@tonic-gate 	int	len, slklen = slk->_len, left;
62*0Sstevel@tonic-gate 	char		*cp, nlab[LABLEN + 1];
63*0Sstevel@tonic-gate 
64*0Sstevel@tonic-gate 	if ((slk == NULL) || f < 0 || f > 2 || n < 1 || n > slk->_num)
65*0Sstevel@tonic-gate 		return (ERR);
66*0Sstevel@tonic-gate 
67*0Sstevel@tonic-gate 	/* 0-indexing internally */
68*0Sstevel@tonic-gate 	n--;
69*0Sstevel@tonic-gate 
70*0Sstevel@tonic-gate 	if (lab == NULL) {
71*0Sstevel@tonic-gate 		lab = "";
72*0Sstevel@tonic-gate 
73*0Sstevel@tonic-gate 	} else {
74*0Sstevel@tonic-gate 		/* chop lengthy label */
75*0Sstevel@tonic-gate 		/* LINTED */
76*0Sstevel@tonic-gate 		if ((len = (int) strlen(lab)) > slklen)
77*0Sstevel@tonic-gate 			lab[len = slklen] = '\0';
78*0Sstevel@tonic-gate 	}
79*0Sstevel@tonic-gate 
80*0Sstevel@tonic-gate 	/* make the new display label */
81*0Sstevel@tonic-gate 	for (cp = nlab + slklen - 1; cp >= nlab; cp--)
82*0Sstevel@tonic-gate 		*cp = ' ';
83*0Sstevel@tonic-gate 	nlab[slklen] = '\0';
84*0Sstevel@tonic-gate 	if (f == 0)
85*0Sstevel@tonic-gate 		left = 0;
86*0Sstevel@tonic-gate 	else
87*0Sstevel@tonic-gate 		left = (slklen - len) / ((f == 1) ? 2 : 1);
88*0Sstevel@tonic-gate 
89*0Sstevel@tonic-gate 	(void) memcpy(nlab + left, lab, len);
90*0Sstevel@tonic-gate 
91*0Sstevel@tonic-gate 	if (strcmp(slk->_ldis[n], nlab) != 0) {
92*0Sstevel@tonic-gate 		(void) memcpy(slk->_lval[n], lab, len + 1);
93*0Sstevel@tonic-gate 		(void) memcpy(slk->_ldis[n], nlab, slklen + 1);
94*0Sstevel@tonic-gate 		slk->_changed = slk->_lch[n] = TRUE;
95*0Sstevel@tonic-gate 	}
96*0Sstevel@tonic-gate 
97*0Sstevel@tonic-gate 	return (OK);
98*0Sstevel@tonic-gate }
99