eval.h revision 1.7 1 1.7 cgd /* $NetBSD: eval.h,v 1.7 1995/03/21 09:08:57 cgd Exp $ */
2 1.7 cgd
3 1.1 cgd /*-
4 1.5 jtc * Copyright (c) 1991, 1993
5 1.5 jtc * The Regents of the University of California. All rights reserved.
6 1.1 cgd *
7 1.1 cgd * This code is derived from software contributed to Berkeley by
8 1.1 cgd * Kenneth Almquist.
9 1.1 cgd *
10 1.1 cgd * Redistribution and use in source and binary forms, with or without
11 1.1 cgd * modification, are permitted provided that the following conditions
12 1.1 cgd * are met:
13 1.1 cgd * 1. Redistributions of source code must retain the above copyright
14 1.1 cgd * notice, this list of conditions and the following disclaimer.
15 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright
16 1.1 cgd * notice, this list of conditions and the following disclaimer in the
17 1.1 cgd * documentation and/or other materials provided with the distribution.
18 1.1 cgd * 3. All advertising materials mentioning features or use of this software
19 1.1 cgd * must display the following acknowledgement:
20 1.1 cgd * This product includes software developed by the University of
21 1.1 cgd * California, Berkeley and its contributors.
22 1.1 cgd * 4. Neither the name of the University nor the names of its contributors
23 1.1 cgd * may be used to endorse or promote products derived from this software
24 1.1 cgd * without specific prior written permission.
25 1.1 cgd *
26 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 1.1 cgd * SUCH DAMAGE.
37 1.1 cgd *
38 1.7 cgd * @(#)eval.h 8.1 (Berkeley) 5/31/93
39 1.1 cgd */
40 1.1 cgd
41 1.1 cgd extern char *commandname; /* currently executing command */
42 1.1 cgd extern int exitstatus; /* exit status of last command */
43 1.1 cgd extern struct strlist *cmdenviron; /* environment for builtin command */
44 1.1 cgd
45 1.1 cgd
46 1.1 cgd struct backcmd { /* result of evalbackcmd */
47 1.1 cgd int fd; /* file descriptor to read from */
48 1.1 cgd char *buf; /* buffer */
49 1.1 cgd int nleft; /* number of chars in buffer */
50 1.1 cgd struct job *jp; /* job structure for command */
51 1.1 cgd };
52 1.1 cgd
53 1.1 cgd
54 1.1 cgd #ifdef __STDC__
55 1.1 cgd void evalstring(char *);
56 1.1 cgd union node; /* BLETCH for ansi C */
57 1.1 cgd void evaltree(union node *, int);
58 1.1 cgd void evalbackcmd(union node *, struct backcmd *);
59 1.1 cgd #else
60 1.1 cgd void evalstring();
61 1.1 cgd void evaltree();
62 1.1 cgd void evalbackcmd();
63 1.1 cgd #endif
64 1.1 cgd
65 1.1 cgd /* in_function returns nonzero if we are currently evaluating a function */
66 1.1 cgd #define in_function() funcnest
67 1.1 cgd extern int funcnest;
68