sh: Save/restore changed variables in optimized command substitution.
[dragonfly.git] / bin / sh / expand.h
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1/*-
2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Kenneth Almquist.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)expand.h 8.2 (Berkeley) 5/4/95
32931063 37 * $FreeBSD: src/bin/sh/expand.h,v 1.16 2011/06/12 23:06:04 jilles Exp $
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38 */
39
40struct strlist {
41 struct strlist *next;
42 char *text;
43};
44
45
46struct arglist {
47 struct strlist *list;
48 struct strlist **lastp;
49};
50
51/*
52 * expandarg() flags
53 */
54#define EXP_FULL 0x1 /* perform word splitting & file globbing */
55#define EXP_TILDE 0x2 /* do normal tilde expansion */
56#define EXP_VARTILDE 0x4 /* expand tildes in an assignment */
57#define EXP_REDIR 0x8 /* file glob for a redirection (1 match only) */
58#define EXP_CASE 0x10 /* keeps quotes around for CASE pattern */
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59#define EXP_SPLIT_LIT 0x20 /* IFS split literal text ${v+-a b c} */
60#define EXP_LIT_QUOTED 0x40 /* for EXP_SPLIT_LIT, start off quoted */
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61
62
63union node;
64void expandhere(union node *, int);
65void expandarg(union node *, struct arglist *, int);
66void expari(int);
99512ac4 67int patmatch(const char *, const char *, int);
984263bc 68void rmescapes(char *);
99512ac4 69int casematch(union node *, const char *);
d13d0ee2 70int wordexpcmd(int, char **);