xref: /onnv-gate/usr/src/lib/libcurses/screen/delay.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	"curses_inc.h"
46*0Sstevel@tonic-gate 
47*0Sstevel@tonic-gate /*
48*0Sstevel@tonic-gate  * The following array gives the number of tens of milliseconds per
49*0Sstevel@tonic-gate  * character for each speed as returned by gtty.  Thus since 300
50*0Sstevel@tonic-gate  * baud returns a 7, there are 33.3 milliseconds per char at 300 baud.
51*0Sstevel@tonic-gate  */
52*0Sstevel@tonic-gate static	short	tmspc10[] =
53*0Sstevel@tonic-gate 		{
54*0Sstevel@tonic-gate 		    /* 0   50    75   110 134.5 150  200  300   baud */
55*0Sstevel@tonic-gate 			0, 2000, 1333, 909, 743, 666, 500, 333,
56*0Sstevel@tonic-gate 		    /* 600 1200 1800 2400 4800 9600 19200 38400 baud */
57*0Sstevel@tonic-gate 			166, 83,  55,  41,  20,  10,   5,    2,
58*0Sstevel@tonic-gate 		    /* 57600, 76800, 115200, 153600, 230400 307200 baud */
59*0Sstevel@tonic-gate 			2,	1,	1,	1,	1,	1,
60*0Sstevel@tonic-gate 		    /* 460800 baud */
61*0Sstevel@tonic-gate 			1
62*0Sstevel@tonic-gate 		};
63*0Sstevel@tonic-gate 
64*0Sstevel@tonic-gate /*
65*0Sstevel@tonic-gate  * Insert a delay into the output stream for "delay/10" milliseconds.
66*0Sstevel@tonic-gate  * Round up by a half a character frame, and then do the delay.
67*0Sstevel@tonic-gate  * Too bad there are no user program accessible programmed delays.
68*0Sstevel@tonic-gate  * Transmitting pad characters slows many terminals down and also
69*0Sstevel@tonic-gate  * loads the system.
70*0Sstevel@tonic-gate  */
71*0Sstevel@tonic-gate 
72*0Sstevel@tonic-gate int
73*0Sstevel@tonic-gate _delay(int delay, int (*outc)(char))
74*0Sstevel@tonic-gate {
75*0Sstevel@tonic-gate 	int	mspc10;
76*0Sstevel@tonic-gate 	char	pc;
77*0Sstevel@tonic-gate 	int	outspeed;
78*0Sstevel@tonic-gate 
79*0Sstevel@tonic-gate 	/* if there is no pad character, then just return */
80*0Sstevel@tonic-gate 	if (no_pad_char)
81*0Sstevel@tonic-gate 		goto good;
82*0Sstevel@tonic-gate 
83*0Sstevel@tonic-gate #ifdef SYSV
84*0Sstevel@tonic-gate 	outspeed = _BRS(PROGTTYS);
85*0Sstevel@tonic-gate #else	/* SYSV */
86*0Sstevel@tonic-gate 	outspeed = _BR(PROGTTY);
87*0Sstevel@tonic-gate #endif	/* SYSV */
88*0Sstevel@tonic-gate 	if (outspeed <= 0 || outspeed >=
89*0Sstevel@tonic-gate 	    (sizeof (tmspc10) / sizeof (tmspc10[0])))
90*0Sstevel@tonic-gate 		return (ERR);
91*0Sstevel@tonic-gate 
92*0Sstevel@tonic-gate 	mspc10 = tmspc10[outspeed];
93*0Sstevel@tonic-gate 	delay += mspc10 / 2;
94*0Sstevel@tonic-gate 	if (pad_char)
95*0Sstevel@tonic-gate 		pc = *pad_char;
96*0Sstevel@tonic-gate 	else
97*0Sstevel@tonic-gate 		pc = 0;
98*0Sstevel@tonic-gate 	for (delay /= mspc10; delay-- > 0; )
99*0Sstevel@tonic-gate 		(*outc)(pc);
100*0Sstevel@tonic-gate good:
101*0Sstevel@tonic-gate 	return (OK);
102*0Sstevel@tonic-gate }
103