1 /* $OpenBSD: tputs.c,v 1.2 2015/11/15 07:12:50 deraadt 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 #include <ctype.h>
34 #include <curses.h>
35 #undef ospeed
36
37 /*
38 * The following array gives the number of tens of milliseconds per
39 * character for each speed as returned by gtty. Thus since 300
40 * baud returns a 7, there are 33.3 milliseconds per char at 300 baud.
41 */
42 static
43 short tmspc10[] = {
44 0, 2000, 1333, 909, 743, 666, 500, 333, 166, 83, 55, 41, 20, 10, 5
45 };
46
47 short ospeed;
48 char PC;
49
50 /*
51 * Put the character string cp out, with padding.
52 * The number of affected lines is affcnt, and the routine
53 * used to output one character is outc.
54 */
55 void
tputs(char * cp,int affcnt,void (* outc)(int))56 tputs(char *cp, int affcnt, void (*outc)(int))
57 {
58 int i = 0, mspc10;
59
60 if (cp == 0)
61 return;
62
63 /*
64 * Convert the number representing the delay.
65 */
66 if (isdigit(*cp)) {
67 do {
68 i = i * 10 + *cp++ - '0';
69 } while (isdigit(*cp));
70 }
71 i *= 10;
72 if (*cp == '.') {
73 cp++;
74 if (isdigit(*cp))
75 i += *cp - '0';
76 /*
77 * Only one digit to the right of the decimal point.
78 */
79 while (isdigit(*cp))
80 cp++;
81 }
82
83 /*
84 * If the delay is followed by a `*', then
85 * multiply by the affected lines count.
86 */
87 if (*cp == '*')
88 cp++, i *= affcnt;
89
90 /*
91 * The guts of the string.
92 */
93 while (*cp)
94 (*outc)(*cp++);
95
96 /*
97 * If no delay needed, or output speed is
98 * not comprehensible, then don't try to delay.
99 */
100 if (i == 0)
101 return;
102 if (ospeed <= 0 || ospeed >= (sizeof tmspc10 / sizeof tmspc10[0]))
103 return;
104
105 /*
106 * Round up by a half a character frame,
107 * and then do the delay.
108 * Too bad there are no user program accessible programmed delays.
109 * Transmitting pad characters slows many
110 * terminals down and also loads the system.
111 */
112 mspc10 = tmspc10[ospeed];
113 i += mspc10 / 2;
114 for (i /= mspc10; i > 0; i--)
115 (*outc)(PC);
116 }
117