/*	$NetBSD: parser.h,v 1.17 2004/06/26 22:09:49 dsl Exp $	*//*- * Copyright (c) 1991, 1993 *	The Regents of the University of California.  All rights reserved. * * This code is derived from software contributed to Berkeley by * Kenneth Almquist. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright *    notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in the *    documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors *    may be used to endorse or promote products derived from this software *    without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * *	@(#)parser.h	8.3 (Berkeley) 5/4/95 *//* control characters in argument strings */#define CTL_FIRST '\201'	/* first 'special' character */#define CTLESC '\201'		/* escape next character */#define CTLVAR '\202'		/* variable defn */#define CTLENDVAR '\203'#define CTLBACKQ '\204'#define CTLQUOTE 01		/* ored with CTLBACKQ code if in quotes *//*	CTLBACKQ | CTLQUOTE == '\205' */#define	CTLARI	'\206'		/* arithmetic expression */#define	CTLENDARI '\207'#define	CTLQUOTEMARK '\210'#define	CTLQUOTEEND '\211'	/* only inside ${...} */#define	CTL_LAST '\211'		/* last 'special' character *//* variable substitution byte (follows CTLVAR) */#define VSTYPE	0x0f		/* type of variable substitution */#define VSNUL	0x10		/* colon--treat the empty string as unset */#define VSQUOTE 0x80		/* inside double quotes--suppress splitting *//* values of VSTYPE field */#define VSNORMAL	0x1		/* normal variable:  $var or ${var} */#define VSMINUS		0x2		/* ${var-text} */#define VSPLUS		0x3		/* ${var+text} */#define VSQUESTION	0x4		/* ${var?message} */#define VSASSIGN	0x5		/* ${var=text} */#define VSTRIMLEFT	0x6		/* ${var#pattern} */#define VSTRIMLEFTMAX	0x7		/* ${var##pattern} */#define VSTRIMRIGHT	0x8		/* ${var%pattern} */#define VSTRIMRIGHTMAX 	0x9		/* ${var%%pattern} */#define VSLENGTH	0xa		/* ${#var} *//* * NEOF is returned by parsecmd when it encounters an end of file.  It * must be distinct from NULL, so we use the address of a variable that * happens to be handy. */extern int tokpushback;#define NEOF ((union node *)&tokpushback)extern int whichprompt;		/* 1 == PS1, 2 == PS2 */union node *parsecmd(int);void fixredir(union node *, const char *, int);int goodname(char *);const char *getprompt(void *);