projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 97e3edfb 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 | ||
| 7 | #ifndef lint | |
| 8 | static char sccsid[] = "@(#)outchar.c 5.1 (Berkeley) %G%"; | |
| 9 | #endif not lint | |
| f38ded87 RC |
10 | |
| 11 | #include "2648.h" | |
| 12 | ||
| 13 | outchar(c) | |
| 14 | char c; | |
| 15 | { | |
| 16 | extern int QUIET; | |
| 17 | #ifdef TRACE | |
| 18 | if (trace) | |
| 19 | fprintf(trace, "%s", rdchar(c)); | |
| 20 | #endif | |
| 21 | if (QUIET) | |
| 22 | return; | |
| 23 | _outcount++; | |
| 24 | putchar(c); | |
| 25 | ||
| 26 | /* Do 2648 ^E/^F handshake */ | |
| 27 | if (_outcount > TBLKSIZ && _on2648) { | |
| 28 | #ifdef TRACE | |
| 29 | if (trace) | |
| 30 | fprintf(trace, "ENQ .. "); | |
| 31 | #endif | |
| 32 | putchar(ENQ); | |
| 33 | fflush(stdout); | |
| 34 | c = getchar(); | |
| 35 | while (c != ACK) { | |
| 36 | if (_pb_front == NULL) { | |
| 37 | _pb_front = _pushback; | |
| 38 | _pb_back = _pb_front - 1; | |
| 39 | } | |
| 40 | *++_pb_back = c; | |
| 41 | #ifdef TRACE | |
| 42 | if (trace) | |
| 43 | fprintf(trace, "push back %s, front=%d, back=%d, ", rdchar(c), _pb_front-_pushback, _pb_front-_pushback); | |
| 44 | #endif | |
| 45 | c = getchar(); | |
| 46 | } | |
| 47 | #ifdef TRACE | |
| 48 | if (trace) | |
| 49 | fprintf(trace, "ACK\n"); | |
| 50 | #endif | |
| 51 | _outcount = 0; | |
| 52 | } | |
| 53 | } |