1 /* $OpenBSD: tputs.c,v 1.3 2003/06/02 20:18:42 millert Exp $ */
2 /* $NetBSD: tputs.c,v 1.5 1995/06/06 08:14:37 pk Exp $ */
3
4 /*
5 * Copyright (c) 1980, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)tputs.c 8.1 (Berkeley) 6/4/93";
36 #else
37 static char rcsid[] = "$OpenBSD: tputs.c,v 1.3 2003/06/02 20:18:42 millert Exp $";
38 #endif
39 #endif /* not lint */
40
41 #include <sgtty.h>
42 #include <ctype.h>
43 #include <curses.h>
44 #undef ospeed
45
46 /*
47 * The following array gives the number of tens of milliseconds per
48 * character for each speed as returned by gtty. Thus since 300
49 * baud returns a 7, there are 33.3 milliseconds per char at 300 baud.
50 */
51 static
52 short tmspc10[] = {
53 0, 2000, 1333, 909, 743, 666, 500, 333, 166, 83, 55, 41, 20, 10, 5
54 };
55
56 short ospeed;
57 char PC;
58
59 /*
60 * Put the character string cp out, with padding.
61 * The number of affected lines is affcnt, and the routine
62 * used to output one character is outc.
63 */
64 void
tputs(cp,affcnt,outc)65 tputs(cp, affcnt, outc)
66 register char *cp;
67 int affcnt;
68 void (*outc)(int);
69 {
70 register int i = 0;
71 register int mspc10;
72
73 if (cp == 0)
74 return;
75
76 /*
77 * Convert the number representing the delay.
78 */
79 if (isdigit(*cp)) {
80 do
81 i = i * 10 + *cp++ - '0';
82 while (isdigit(*cp));
83 }
84 i *= 10;
85 if (*cp == '.') {
86 cp++;
87 if (isdigit(*cp))
88 i += *cp - '0';
89 /*
90 * Only one digit to the right of the decimal point.
91 */
92 while (isdigit(*cp))
93 cp++;
94 }
95
96 /*
97 * If the delay is followed by a `*', then
98 * multiply by the affected lines count.
99 */
100 if (*cp == '*')
101 cp++, i *= affcnt;
102
103 /*
104 * The guts of the string.
105 */
106 while (*cp)
107 (*outc)(*cp++);
108
109 /*
110 * If no delay needed, or output speed is
111 * not comprehensible, then don't try to delay.
112 */
113 if (i == 0)
114 return;
115 if (ospeed <= 0 || ospeed >= (sizeof tmspc10 / sizeof tmspc10[0]))
116 return;
117
118 /*
119 * Round up by a half a character frame,
120 * and then do the delay.
121 * Too bad there are no user program accessible programmed delays.
122 * Transmitting pad characters slows many
123 * terminals down and also loads the system.
124 */
125 mspc10 = tmspc10[ospeed];
126 i += mspc10 / 2;
127 for (i /= mspc10; i > 0; i--)
128 (*outc)(PC);
129 }
130