xref: /illumos-gate/usr/src/ucblib/libtermcap/tputs.c (revision 948f2876ce2a3010558f4f6937e16086ebcd36f2)
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 1997 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	  All Rights Reserved  	*/
29 
30 /* Copyright (c) 1979 Regents of the University of California */
31 
32 #pragma ident	"%Z%%M%	%I%	%E% SMI"
33 
34 /*LINTLIBRARY*/
35 
36 #if 0
37 static char
38 sccsid[] = "@(#)tputs.c 1.5 88/02/08 SMI"; /* from UCB 4.1 6/27/83 */
39 #endif
40 
41 #include <sys/types.h>
42 #include <sgtty.h>
43 #include <ctype.h>
44 
45 /*
46  * The following array gives the number of tens of milliseconds per
47  * character for each speed as returned by gtty.  Thus since 300
48  * baud returns a 7, there are 33.3 milliseconds per char at 300 baud.
49  */
50 static
51 short	tmspc10[] = {
52 	0, 2000, 1333, 909, 743, 666, 500, 333, 166, 83, 55, 41, 20, 10, 5
53 };
54 
55 short	ospeed;
56 char	PC;
57 
58 /*
59  * Put the character string cp out, with padding.
60  * The number of affected lines is affcnt, and the routine
61  * used to output one character is outc.
62  *
63  * Note:
64  * Return value is provided only because prototype is defined as such;
65  * no real meaning.
66  */
67 
68 int
69 tputs(char *cp, int affcnt, int (*outc)(char))
70 {
71 	int i = 0;
72 	int mspc10;
73 
74 	if (cp == 0)
75 		return (0);
76 
77 	/*
78 	 * Convert the number representing the delay.
79 	 */
80 	if (isdigit(*cp)) {
81 		do
82 			i = i * 10 + *cp++ - '0';
83 		while (isdigit(*cp));
84 	}
85 	i *= 10;
86 	if (*cp == '.') {
87 		cp++;
88 		if (isdigit(*cp))
89 			i += *cp - '0';
90 		/*
91 		 * Only one digit to the right of the decimal point.
92 		 */
93 		while (isdigit(*cp))
94 			cp++;
95 	}
96 
97 	/*
98 	 * If the delay is followed by a `*', then
99 	 * multiply by the affected lines count.
100 	 */
101 	if (*cp == '*')
102 		cp++, i *= affcnt;
103 
104 	/*
105 	 * The guts of the string.
106 	 */
107 	while (*cp)
108 		(*outc)(*cp++);
109 
110 	/*
111 	 * If no delay needed, or output speed is
112 	 * not comprehensible, then don't try to delay.
113 	 */
114 	if (i == 0)
115 		return (0);
116 	if (ospeed <= 0 || ospeed >= (sizeof (tmspc10) / sizeof (tmspc10[0])))
117 		return (0);
118 
119 	/*
120 	 * Round up by a half a character frame,
121 	 * and then do the delay.
122 	 * Too bad there are no user program accessible programmed delays.
123 	 * Transmitting pad characters slows many
124 	 * terminals down and also loads the system.
125 	 */
126 	mspc10 = tmspc10[ospeed];
127 	i += mspc10 / 2;
128 	for (i /= mspc10; i > 0; i--)
129 		(*outc)(PC);
130 	return (0);
131 }
132