1#ifndef VARMODIFIERS_H
2#define VARMODIFIERS_H
3
4/* $OpenBSD: varmodifiers.h,v 1.12 2010/07/19 19:46:44 espie Exp $ */
5
6/*
7 * Copyright (c) 1999 Marc Espie.
8 *
9 * Extensive code changes for the OpenBSD project.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OPENBSD
24 * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33/* VarModifiers_Init();
34 *	Set up varmodifiers internal table according to selected features.
35 *	This can be called several times without harm. */
36extern void VarModifiers_Init(void);
37
38
39/* result = VarModifiers_Apply(val, name, ctxt, undef_is_bad,
40 *   &should_free, &modstart, paren);
41 *	Applies variable modifiers starting at modstart (including :),
42 *	using parenthesis paren, to value val.
43 *	Variables in spec are taken from context ctxt.
44 *	If undef_is_bad, error occurs if undefined variables are mentioned.
45 *	modstart is advanced past the end of the spec.
46 *	name holds the name of the corresponding variable, as some ODE
47 *	modifiers need it.
48 *
49 *	If both val and name are NULL, VarModifiers_Apply just parses the
50 *	modifiers specification, as it can't apply it to anything. */
51extern char *VarModifiers_Apply(char *, const struct Name *, SymTable *,
52	bool, bool *, const char **, int);
53
54/* Direct interface to specific modifiers used under special circumstances. */
55/* tails = Var_GetTail(string);
56 *	Returns the tail of list of words in string (needed for SysV locals). */
57extern char *Var_GetTail(char *);
58/* heads = Var_GetHead(string);
59 *	Returns the head of list of words in string. */
60/* XXX this does not replace foo with ., as (sun) System V make does.
61 * Should it ? */
62extern char *Var_GetHead(char *);
63#endif
64