| /*- |
| * Copyright (c) 1991, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * Copyright (c) 1997-2005 |
| * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. |
| * |
| * This code is derived from software contributed to Berkeley by |
| * Kenneth Almquist. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * @(#)eval.h 8.2 (Berkeley) 5/4/95 |
| */ |
| |
| extern char *commandname; /* currently executing command */ |
| extern int exitstatus; /* exit status of last command */ |
| extern int back_exitstatus; /* exit status of backquoted command */ |
| |
| |
| struct backcmd { /* result of evalbackcmd */ |
| int fd; /* file descriptor to read from */ |
| char *buf; /* buffer */ |
| int nleft; /* number of chars in buffer */ |
| struct job *jp; /* job structure for command */ |
| }; |
| |
| /* flags in argument to evaltree */ |
| #define EV_EXIT 01 /* exit after evaluating tree */ |
| #define EV_TESTED 02 /* exit status is checked; ignore -e flag */ |
| |
| int evalstring(char *, int); |
| union node; /* BLETCH for ansi C */ |
| void evaltree(union node *, int); |
| void evalbackcmd(union node *, struct backcmd *); |
| |
| extern int evalskip; |
| |
| /* reasons for skipping commands (see comment on breakcmd routine) */ |
| #define SKIPBREAK (1 << 0) |
| #define SKIPCONT (1 << 1) |
| #define SKIPFUNC (1 << 2) |
| #define SKIPFILE (1 << 3) |
