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[] = "@(#)rawchar.c 5.1 (Berkeley) %G%"; | |
| 9 | #endif not lint | |
| 10 | ||
| 2f01710c RC |
11 | /* |
| 12 | * get a character from the terminal, with no line buffering. | |
| 13 | */ | |
| 14 | ||
| 15 | #include "2648.h" | |
| 16 | ||
| 17 | rawchar() | |
| 18 | { | |
| 19 | char c; | |
| 20 | ||
| 21 | sync(); | |
| 22 | escseq(NONE); | |
| 23 | fflush(stdout); | |
| 24 | if (_pb_front && _on2648) { | |
| 25 | c = *_pb_front++; | |
| 26 | #ifdef TRACE | |
| 27 | if (trace) | |
| 28 | fprintf(trace, "%s from queue, front=%d, back=%d\n", rdchar(c), _pb_front-_pushback, _pb_back-_pushback); | |
| 29 | #endif | |
| 30 | if (_pb_front > _pb_back) { | |
| 31 | _pb_front = _pb_back = NULL; | |
| 32 | #ifdef TRACE | |
| 33 | if (trace) | |
| 34 | fprintf(trace, "reset pushback to null\n"); | |
| 35 | #endif | |
| 36 | } | |
| 37 | return (c); | |
| 38 | } | |
| 39 | _outcount = 0; | |
| 40 | c = getchar(); | |
| 41 | #ifdef TRACE | |
| 42 | if (trace) | |
| 43 | fprintf(trace, "rawchar '%s'\n", rdchar(c)); | |
| 44 | #endif | |
| 45 | return (c); | |
| 46 | } |