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Annotation of 43BSDReno/lib/libterm/tputs.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #ifndef lint
        !            21: static char sccsid[] = "@(#)tputs.c    5.3 (Berkeley) 6/1/90";
        !            22: #endif /* not lint */
        !            23: 
        !            24: #include <sgtty.h>
        !            25: #include <ctype.h>
        !            26: 
        !            27: /*
        !            28:  * The following array gives the number of tens of milliseconds per
        !            29:  * character for each speed as returned by gtty.  Thus since 300
        !            30:  * baud returns a 7, there are 33.3 milliseconds per char at 300 baud.
        !            31:  */
        !            32: static
        !            33: short  tmspc10[] = {
        !            34:        0, 2000, 1333, 909, 743, 666, 500, 333, 166, 83, 55, 41, 20, 10, 5
        !            35: };
        !            36: 
        !            37: short  ospeed;
        !            38: char   PC;
        !            39: 
        !            40: /*
        !            41:  * Put the character string cp out, with padding.
        !            42:  * The number of affected lines is affcnt, and the routine
        !            43:  * used to output one character is outc.
        !            44:  */
        !            45: tputs(cp, affcnt, outc)
        !            46:        register char *cp;
        !            47:        int affcnt;
        !            48:        int (*outc)();
        !            49: {
        !            50:        register int i = 0;
        !            51:        register int mspc10;
        !            52: 
        !            53:        if (cp == 0)
        !            54:                return;
        !            55: 
        !            56:        /*
        !            57:         * Convert the number representing the delay.
        !            58:         */
        !            59:        if (isdigit(*cp)) {
        !            60:                do
        !            61:                        i = i * 10 + *cp++ - '0';
        !            62:                while (isdigit(*cp));
        !            63:        }
        !            64:        i *= 10;
        !            65:        if (*cp == '.') {
        !            66:                cp++;
        !            67:                if (isdigit(*cp))
        !            68:                        i += *cp - '0';
        !            69:                /*
        !            70:                 * Only one digit to the right of the decimal point.
        !            71:                 */
        !            72:                while (isdigit(*cp))
        !            73:                        cp++;
        !            74:        }
        !            75: 
        !            76:        /*
        !            77:         * If the delay is followed by a `*', then
        !            78:         * multiply by the affected lines count.
        !            79:         */
        !            80:        if (*cp == '*')
        !            81:                cp++, i *= affcnt;
        !            82: 
        !            83:        /*
        !            84:         * The guts of the string.
        !            85:         */
        !            86:        while (*cp)
        !            87:                (*outc)(*cp++);
        !            88: 
        !            89:        /*
        !            90:         * If no delay needed, or output speed is
        !            91:         * not comprehensible, then don't try to delay.
        !            92:         */
        !            93:        if (i == 0)
        !            94:                return;
        !            95:        if (ospeed <= 0 || ospeed >= (sizeof tmspc10 / sizeof tmspc10[0]))
        !            96:                return;
        !            97: 
        !            98:        /*
        !            99:         * Round up by a half a character frame,
        !           100:         * and then do the delay.
        !           101:         * Too bad there are no user program accessible programmed delays.
        !           102:         * Transmitting pad characters slows many
        !           103:         * terminals down and also loads the system.
        !           104:         */
        !           105:        mspc10 = tmspc10[ospeed];
        !           106:        i += mspc10 / 2;
        !           107:        for (i /= mspc10; i > 0; i--)
        !           108:                (*outc)(PC);
        !           109: }

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