| The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 1 | /* $NetBSD: eval.h,v 1.14 2003/08/07 09:05:31 agc Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1991, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to Berkeley by |
| 8 | * Kenneth Almquist. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * 3. Neither the name of the University nor the names of its contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | * |
| 34 | * @(#)eval.h 8.2 (Berkeley) 5/4/95 |
| 35 | */ |
| 36 | |
| 37 | extern char *commandname; /* currently executing command */ |
| 38 | extern int exitstatus; /* exit status of last command */ |
| 39 | extern int back_exitstatus; /* exit status of backquoted command */ |
| 40 | extern struct strlist *cmdenviron; /* environment for builtin command */ |
| 41 | |
| 42 | |
| 43 | struct backcmd { /* result of evalbackcmd */ |
| 44 | int fd; /* file descriptor to read from */ |
| 45 | char *buf; /* buffer */ |
| 46 | int nleft; /* number of chars in buffer */ |
| 47 | struct job *jp; /* job structure for command */ |
| 48 | }; |
| 49 | |
| 50 | void evalstring(char *, int); |
| 51 | union node; /* BLETCH for ansi C */ |
| 52 | void evaltree(union node *, int); |
| 53 | void evalbackcmd(union node *, struct backcmd *); |
| 54 | |
| 55 | /* in_function returns nonzero if we are currently evaluating a function */ |
| 56 | #define in_function() funcnest |
| 57 | extern int funcnest; |
| 58 | extern int evalskip; |
| 59 | |
| 60 | /* reasons for skipping commands (see comment on breakcmd routine) */ |
| 61 | #define SKIPBREAK 1 |
| 62 | #define SKIPCONT 2 |
| 63 | #define SKIPFUNC 3 |
| 64 | #define SKIPFILE 4 |