projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 6468808a DF |
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 | ||
| 789eab2e | 7 | #ifndef lint |
| 6468808a DF |
8 | static char sccsid[] = "@(#)tputs.c 5.1 (Berkeley) %G%"; |
| 9 | #endif not lint | |
| 789eab2e | 10 | |
| 789eab2e SL |
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 | } |