| 1 | /* rawchar.c 4.1 83/03/09 */ |
| 2 | /* |
| 3 | * get a character from the terminal, with no line buffering. |
| 4 | */ |
| 5 | |
| 6 | #include "2648.h" |
| 7 | |
| 8 | rawchar() |
| 9 | { |
| 10 | char c; |
| 11 | |
| 12 | sync(); |
| 13 | escseq(NONE); |
| 14 | fflush(stdout); |
| 15 | if (_pb_front && _on2648) { |
| 16 | c = *_pb_front++; |
| 17 | #ifdef TRACE |
| 18 | if (trace) |
| 19 | fprintf(trace, "%s from queue, front=%d, back=%d\n", rdchar(c), _pb_front-_pushback, _pb_back-_pushback); |
| 20 | #endif |
| 21 | if (_pb_front > _pb_back) { |
| 22 | _pb_front = _pb_back = NULL; |
| 23 | #ifdef TRACE |
| 24 | if (trace) |
| 25 | fprintf(trace, "reset pushback to null\n"); |
| 26 | #endif |
| 27 | } |
| 28 | return (c); |
| 29 | } |
| 30 | _outcount = 0; |
| 31 | c = getchar(); |
| 32 | #ifdef TRACE |
| 33 | if (trace) |
| 34 | fprintf(trace, "rawchar '%s'\n", rdchar(c)); |
| 35 | #endif |
| 36 | return (c); |
| 37 | } |