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Annotation of 43BSDReno/usr.bin/ex/OTHER/vms/tputs.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1980 Regents of the University of California.
                      3:  * All rights reserved.  The Berkeley software License Agreement
                      4:  * specifies the terms and conditions for redistribution.
                      5:  */
                      6: 
                      7: #ifndef lint
                      8: static char sccsid[] = "@(#)tputs.c    5.1 (Berkeley) 6/5/85";
                      9: #endif not lint
                     10: 
                     11: #ifndef        vms
                     12: #include <sgtty.h>
                     13: #endif
                     14: #include <ctype.h>
                     15: 
                     16: /*
                     17:  * The following array gives the number of tens of milliseconds per
                     18:  * character for each speed as returned by gtty.  Thus since 300
                     19:  * baud returns a 7, there are 33.3 milliseconds per char at 300 baud.
                     20:  */
                     21: static
                     22: short  tmspc10[] = {
                     23:        0, 2000, 1333, 909, 743, 666, 500, 333, 166, 83, 55, 41, 20, 10, 5
                     24: };
                     25: 
                     26: short  ospeed;
                     27: char   PC;
                     28: 
                     29: /*
                     30:  * Put the character string cp out, with padding.
                     31:  * The number of affected lines is affcnt, and the routine
                     32:  * used to output one character is outc.
                     33:  */
                     34: tputs(cp, affcnt, outc)
                     35:        register char *cp;
                     36:        int affcnt;
                     37:        int (*outc)();
                     38: {
                     39:        register int i = 0;
                     40:        register int mspc10;
                     41: 
                     42:        if (cp == 0)
                     43:                return;
                     44: 
                     45:        /*
                     46:         * Convert the number representing the delay.
                     47:         */
                     48:        if (isdigit(*cp)) {
                     49:                do
                     50:                        i = i * 10 + *cp++ - '0';
                     51:                while (isdigit(*cp));
                     52:        }
                     53:        i *= 10;
                     54:        if (*cp == '.') {
                     55:                cp++;
                     56:                if (isdigit(*cp))
                     57:                        i += *cp - '0';
                     58:                /*
                     59:                 * Only one digit to the right of the decimal point.
                     60:                 */
                     61:                while (isdigit(*cp))
                     62:                        cp++;
                     63:        }
                     64: 
                     65:        /*
                     66:         * If the delay is followed by a `*', then
                     67:         * multiply by the affected lines count.
                     68:         */
                     69:        if (*cp == '*')
                     70:                cp++, i *= affcnt;
                     71: 
                     72:        /*
                     73:         * The guts of the string.
                     74:         */
                     75:        while (*cp)
                     76:                (*outc)(*cp++);
                     77: 
                     78:        /*
                     79:         * If no delay needed, or output speed is
                     80:         * not comprehensible, then don't try to delay.
                     81:         */
                     82:        if (i == 0)
                     83:                return;
                     84:        if (ospeed <= 0 || ospeed >= (sizeof tmspc10 / sizeof tmspc10[0]))
                     85:                return;
                     86: 
                     87:        /*
                     88:         * Round up by a half a character frame,
                     89:         * and then do the delay.
                     90:         * Too bad there are no user program accessible programmed delays.
                     91:         * Transmitting pad characters slows many
                     92:         * terminals down and also loads the system.
                     93:         */
                     94:        mspc10 = tmspc10[ospeed];
                     95:        i += mspc10 / 2;
                     96:        for (i /= mspc10; i > 0; i--)
                     97:                (*outc)(PC);
                     98: }

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