[unix-history] / usr / src / usr.bin / window / char.h

/*
 * @(#)char.h	3.2 %G%
 */

/*
 * Macros and things to deal with control characters.
 *
 * Unctrl() is just like the standard function, except we don't want
 * to include curses.
 * Isctrl() returns true for all characters less than space and
 * greater than or equal to delete.
 * Isprt() is tab and all characters not isctrl().  It's used
 * by wwwrite().
 * Isunctrl() includes all characters that should be expanded
 * using unctrl() by wwwrite() if ww_unctrl is set.
 */

char *_unctrl[];
char _cmap[];
#define ctrl(c)		('c' & 0x1f)
#define unctrl(c)	(_unctrl[(unsigned char) (c)])
#define _C		0x01
#define _P		0x02
#define _U		0x04
#define isctrl(c)	(_cmap[(unsigned char) (c)] & _C)
#define isprt(c)	(_cmap[(unsigned char) (c)] & _P)
#define isunctrl(c)	(_cmap[(unsigned char) (c)] & _U)
Commit	Line	Data
d5d80ef9	1	/*
7edc52ec	2	* @(#)char.h 3.2 %G%
d5d80ef9 EW	3	*/
	4
	5	/*
	6	* Macros and things to deal with control characters.
	7	*
	8	* Unctrl() is just like the standard function, except we don't want
	9	* to include curses.
	10	* Isctrl() returns true for all characters less than space and
	11	* greater than or equal to delete.
	12	* Isprt() is tab and all characters not isctrl(). It's used
	13	* by wwwrite().
	14	* Isunctrl() includes all characters that should be expanded
	15	* using unctrl() by wwwrite() if ww_unctrl is set.
	16	*/
	17
	18	char *_unctrl[];
	19	char _cmap[];
	20	#define ctrl(c) ('c' & 0x1f)
	21	#define unctrl(c) (_unctrl[(unsigned char) (c)])
	22	#define _C 0x01
	23	#define _P 0x02
	24	#define _U 0x04
	25	#define isctrl(c) (_cmap[(unsigned char) (c)] & _C)
	26	#define isprt(c) (_cmap[(unsigned char) (c)] & _P)
	27	#define isunctrl(c) (_cmap[(unsigned char) (c)] & _U)