4.3BSD - /usr/src/usr.lib/lib2648/rdchar.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[] = "@(#)rdchar.c	5.1 (Berkeley) 4/26/85";
   9: #endif not lint
  10: 
  11: /*
  12:  * rdchar: returns a readable representation of an ASCII char, using ^ notation.
  13:  */
  14: 
  15: #include <ctype.h>
  16: 
  17: char *rdchar(c)
  18: char c;
  19: {
  20:     static char ret[4];
  21:     register char *p;
  22: 
  23:     /*
  24: 	 * Due to a bug in isprint, this prints spaces as ^`, but this is OK
  25: 	 * because we want something to show up on the screen.
  26: 	 */
  27:     ret[0] = ((c&0377) > 0177) ? '\'' : ' ';
  28:     c &= 0177;
  29:     ret[1] = isprint(c) ? ' ' : '^';
  30:     ret[2] = isprint(c) ?  c  : c^0100;
  31:     ret[3] = 0;
  32:     for (p=ret; *p==' '; p++)
  33:         ;
  34:     return (p);
  35: }

Defined functions

Defined variables