[unix-history] / usr / src / old / lib2648 / rdchar.c

/*	rdchar.c	4.1	83/03/09	*/
/*
 * rdchar: returns a readable representation of an ASCII char, using ^ notation.
 */

#include <ctype.h>

char *rdchar(c)
char c;
{
	static char ret[4];
	register char *p;

	/*
	 * Due to a bug in isprint, this prints spaces as ^`, but this is OK
	 * because we want something to show up on the screen.
	 */
	ret[0] = ((c&0377) > 0177) ? '\'' : ' ';
	c &= 0177;
	ret[1] = isprint(c) ? ' ' : '^';
	ret[2] = isprint(c) ?  c  : c^0100;
	ret[3] = 0;
	for (p=ret; *p==' '; p++)
		;
	return (p);
}
Commit	Line	Data
d9fde7be RC	1	/* rdchar.c 4.1 83/03/09 */
	2	/*
	3	* rdchar: returns a readable representation of an ASCII char, using ^ notation.
	4	*/
	5
	6	#include <ctype.h>
	7
	8	char *rdchar(c)
	9	char c;
	10	{
	11	static char ret[4];
	12	register char *p;
	13
	14	/*
	15	* Due to a bug in isprint, this prints spaces as ^`, but this is OK
	16	* because we want something to show up on the screen.
	17	*/
	18	ret[0] = ((c&0377) > 0177) ? '\'' : ' ';
	19	c &= 0177;
	20	ret[1] = isprint(c) ? ' ' : '^';
	21	ret[2] = isprint(c) ? c : c^0100;
	22	ret[3] = 0;
	23	for (p=ret; *p==' '; p++)
	24	;
	25	return (p);
	26	}