4.3BSD - /usr/src/usr.lib/libtermlib/tputs.c

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

Defined functions

Defined variables