4.3BSD - /usr/src/usr.lib/lib2648/rawchar.c

   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) 4/26/85";
   9: #endif not lint
  10: 
  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: }

Defined functions

Defined variables