/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley Software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)sh.char.h 5.3 (Berkeley) 3/29/86
*/
/*
* Table for spotting special characters quickly
*
* Makes for very obscure but efficient coding.
*/
extern unsigned short _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 _DIG 0x100 /* 0-9 */
#define _LET 0x200 /* a-z, A-Z, _ */
#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)
#define digit(c) cmap(c, _DIG)
#define letter(c) cmap(c, _LET)
#define alnum(c) (digit(c) || letter(c))