var.h revision 146134 
1/*-
2 * Copyright (c) 2002 Juli Mallett.
3 * Copyright (c) 1988, 1989, 1990, 1993
4 *	The Regents of the University of California.  All rights reserved.
5 * Copyright (c) 1989 by Berkeley Softworks
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Adam de Boor.
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 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *	This product includes software developed by the University of
22 *	California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 *    may be used to endorse or promote products derived from this software
25 *    without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 * $FreeBSD: head/usr.bin/make/var.h 146134 2005-05-12 11:58:39Z harti $
40 */
41
42#ifndef var_h_9cccafce
43#define	var_h_9cccafce
44
45struct GNode;
46struct Buffer;
47
48/* Variables defined in a global context, e.g in the Makefile itself */
49extern struct GNode	*VAR_GLOBAL;
50
51/* Variables defined on the command line */
52extern struct GNode	*VAR_CMD;
53
54/*
55 * Value returned by Var_Parse when an error is encountered.  It actually
56 * points to an empty string, so naive callers needn't worry about it.
57 */
58extern char		var_Error[];
59
60/*
61 * TRUE if environment should be searched for all variables before
62 * the global context
63 */
64extern Boolean		checkEnvFirst;
65
66/* Do old-style variable substitution */
67extern Boolean		oldVars;
68
69void Var_Append(const char *, const char *, struct GNode *);
70void Var_Delete(const char *, struct GNode *);
71void Var_Dump(void);
72Boolean Var_Exists(const char *, struct GNode *);
73void Var_Init(char **);
74size_t Var_Match(const char [], struct GNode *);
75char *Var_Parse(const char *, struct GNode *, Boolean, size_t *, Boolean *);
76void Var_Set(const char *, const char *, struct GNode *);
77void Var_SetEnv(const char *, struct GNode *);
78struct Buffer *Var_Subst(const char *, struct GNode *, Boolean);
79struct Buffer *Var_SubstOnly(const char *, const char *, Boolean);
80char *Var_Value(const char *, struct GNode *, char **);
81
82#endif /* var_h_9cccafce */
83