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

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 *
 *	@(#)char.h	5.1 (Berkeley) %G%
 */

/*
 * Table for spotting special characters quickly
 *
 * Makes for very obscure but efficient coding.
 */

extern char _cmap[];

#define _Q	0x01		/* '" */
#define _Q1	0x02		/* ` */
#define _SP	0x04		/* space and tab */
#define _NL	0x08		/* \n */
#define _META	0x10		/* lex meta characters, sp #'`";&<>()|\t\n */
#define _GLOB	0x20		/* glob characters, *?{[` */
#define _ESC	0x40		/* \ */
#define _DOL	0x80		/* $ */

#define cmap(c, bits)	(_cmap[(unsigned char)(c)] & (bits))

#define isglob(c)	cmap(c, _GLOB)
#define isspace(c)	cmap(c, _SP)
#define isspnl(c)	cmap(c, _SP|_NL)
#define ismeta(c)	cmap(c, _META)
Commit	Line	Data
b79f4fa9 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	* @(#)char.h 5.1 (Berkeley) %G%
	7	*/
13a4113c EW	8
	9	/*
	10	* Table for spotting special characters quickly
	11	*
	12	* Makes for very obscure but efficient coding.
	13	*/
	14
	15	extern char _cmap[];
	16
	17	#define _Q 0x01 /* '" */
	18	#define _Q1 0x02 /* ` */
	19	#define _SP 0x04 /* space and tab */
	20	#define _NL 0x08 /* \n */
	21	#define _META 0x10 /* lex meta characters, sp #'`";&<>()\|\t\n */
	22	#define _GLOB 0x20 /* glob characters, ?{[` /
	23	#define _ESC 0x40 /* \ */
	24	#define _DOL 0x80 /* $ */
	25
	26	#define cmap(c, bits) (_cmap[(unsigned char)(c)] & (bits))
	27
	28	#define isglob(c) cmap(c, _GLOB)
	29	#define isspace(c) cmap(c, _SP)
	30	#define isspnl(c) cmap(c, _SP\|_NL)
	31	#define ismeta(c) cmap(c, _META)