OpenSolaris_b135/ucblib/libtermcap/tputs.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
/*	  All Rights Reserved  	*/

/* Copyright (c) 1979 Regents of the University of California */

#pragma ident	"%Z%%M%	%I%	%E% SMI"

/*LINTLIBRARY*/

#if 0
static char
sccsid[] = "@(#)tputs.c 1.5 88/02/08 SMI"; /* from UCB 4.1 6/27/83 */
#endif

#include <sys/types.h>
#include <sgtty.h>
#include <ctype.h>

/*
 * The following array gives the number of tens of milliseconds per
 * character for each speed as returned by gtty.  Thus since 300
 * baud returns a 7, there are 33.3 milliseconds per char at 300 baud.
 */
static
short	tmspc10[] = {
	0, 2000, 1333, 909, 743, 666, 500, 333, 166, 83, 55, 41, 20, 10, 5
};

short	ospeed;
char	PC;

/*
 * Put the character string cp out, with padding.
 * The number of affected lines is affcnt, and the routine
 * used to output one character is outc.
 *
 * Note:
 * Return value is provided only because prototype is defined as such;
 * no real meaning.
 */

int
tputs(char *cp, int affcnt, int (*outc)(char))
{
	int i = 0;
	int mspc10;

	if (cp == 0)
		return (0);

	/*
	 * Convert the number representing the delay.
	 */
	if (isdigit(*cp)) {
		do
			i = i * 10 + *cp++ - '0';
		while (isdigit(*cp));
	}
	i *= 10;
	if (*cp == '.') {
		cp++;
		if (isdigit(*cp))
			i += *cp - '0';
		/*
		 * Only one digit to the right of the decimal point.
		 */
		while (isdigit(*cp))
			cp++;
	}

	/*
	 * If the delay is followed by a `*', then
	 * multiply by the affected lines count.
	 */
	if (*cp == '*')
		cp++, i *= affcnt;

	/*
	 * The guts of the string.
	 */
	while (*cp)
		(*outc)(*cp++);

	/*
	 * If no delay needed, or output speed is
	 * not comprehensible, then don't try to delay.
	 */
	if (i == 0)
		return (0);
	if (ospeed <= 0 || ospeed >= (sizeof (tmspc10) / sizeof (tmspc10[0])))
		return (0);

	/*
	 * Round up by a half a character frame,
	 * and then do the delay.
	 * Too bad there are no user program accessible programmed delays.
	 * Transmitting pad characters slows many
	 * terminals down and also loads the system.
	 */
	mspc10 = tmspc10[ospeed];
	i += mspc10 / 2;
	for (i /= mspc10; i > 0; i--)
		(*outc)(PC);
	return (0);
}