/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 * Copyright (c) 2026 Project Tick. 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.
 */

struct arglist {
	char **args;
	int count;
	int capacity;
	char *smallarg[1];
};

/*
 * expandarg() flags
 */
#define EXP_SPLIT	0x1	/* perform word splitting */
#define EXP_TILDE	0x2	/* do normal tilde expansion */
#define	EXP_VARTILDE	0x4	/* expand tildes in an assignment */
#define EXP_CASE	0x10	/* keeps quotes around for CASE pattern */
#define EXP_SPLIT_LIT	0x20	/* IFS split literal text ${v+-a b c} */
#define EXP_LIT_QUOTED	0x40	/* for EXP_SPLIT_LIT, start off quoted */
#define EXP_GLOB	0x80	/* perform file globbing */

#define EXP_FULL	(EXP_SPLIT | EXP_GLOB)


void emptyarglist(struct arglist *);
void appendarglist(struct arglist *, char *);
union node;
void expandarg(union node *, struct arglist *, int);
void rmescapes(char *);
int casematch(union node *, const char *);
