Add the DragonFly cvs id and perform general cleanups on cvs/rcs/sccs ids. Most
[dragonfly.git] / bin / sh / eval.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 * @(#)eval.h 8.2 (Berkeley) 5/4/95
37 * $FreeBSD: src/bin/sh/eval.h,v 1.7.2.2 2002/08/27 01:36:28 tjr Exp $
1de703da 38 * $DragonFly: src/bin/sh/eval.h,v 1.2 2003/06/17 04:22:50 dillon Exp $
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39 */
40
41extern char *commandname; /* currently executing command */
42extern int exitstatus; /* exit status of last command */
43extern struct strlist *cmdenviron; /* environment for builtin command */
44
45
46struct backcmd { /* result of evalbackcmd */
47 int fd; /* file descriptor to read from */
48 char *buf; /* buffer */
49 int nleft; /* number of chars in buffer */
50 struct job *jp; /* job structure for command */
51};
52
53int evalcmd(int, char **);
54void evalstring(char *);
55union node; /* BLETCH for ansi C */
56void evaltree(union node *, int);
57void evalbackcmd(union node *, struct backcmd *);
58int bltincmd(int, char **);
59int breakcmd(int, char **);
60int returncmd(int, char **);
61int falsecmd(int, char **);
62int truecmd(int, char **);
63int execcmd(int, char **);
64int commandcmd(int, char **);
65
66/* in_function returns nonzero if we are currently evaluating a function */
67#define in_function() funcnest
68extern int funcnest;
69extern int evalskip;
70
71/* reasons for skipping commands (see comment on breakcmd routine) */
72#define SKIPBREAK 1
73#define SKIPCONT 2
74#define SKIPFUNC 3
75#define SKIPFILE 4