| 1 | /* outchar.c 4.1 83/03/09 */ |
| 2 | |
| 3 | #include "2648.h" |
| 4 | |
| 5 | outchar(c) |
| 6 | char c; |
| 7 | { |
| 8 | extern int QUIET; |
| 9 | #ifdef TRACE |
| 10 | if (trace) |
| 11 | fprintf(trace, "%s", rdchar(c)); |
| 12 | #endif |
| 13 | if (QUIET) |
| 14 | return; |
| 15 | _outcount++; |
| 16 | putchar(c); |
| 17 | |
| 18 | /* Do 2648 ^E/^F handshake */ |
| 19 | if (_outcount > TBLKSIZ && _on2648) { |
| 20 | #ifdef TRACE |
| 21 | if (trace) |
| 22 | fprintf(trace, "ENQ .. "); |
| 23 | #endif |
| 24 | putchar(ENQ); |
| 25 | fflush(stdout); |
| 26 | c = getchar(); |
| 27 | while (c != ACK) { |
| 28 | if (_pb_front == NULL) { |
| 29 | _pb_front = _pushback; |
| 30 | _pb_back = _pb_front - 1; |
| 31 | } |
| 32 | *++_pb_back = c; |
| 33 | #ifdef TRACE |
| 34 | if (trace) |
| 35 | fprintf(trace, "push back %s, front=%d, back=%d, ", rdchar(c), _pb_front-_pushback, _pb_front-_pushback); |
| 36 | #endif |
| 37 | c = getchar(); |
| 38 | } |
| 39 | #ifdef TRACE |
| 40 | if (trace) |
| 41 | fprintf(trace, "ACK\n"); |
| 42 | #endif |
| 43 | _outcount = 0; |
| 44 | } |
| 45 | } |