Subversion Repositories planix.SVN

/*
 * Copyright (c) 1980 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static char sccsid[] = "@(#)tputs.c     5.3 (Berkeley) 6/1/90";
#endif /* not lint */

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

        if (cp == 0)
                return;

        /*
         * 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;
        if (ospeed <= 0 || ospeed >= (sizeof tmspc10 / sizeof tmspc10[0]))
                return;

        /*
         * 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);
}