eval.h revision 50471
10SN/A/*- 216651Smullan * Copyright (c) 1991, 1993 30SN/A * The Regents of the University of California. All rights reserved. 40SN/A * 50SN/A * This code is derived from software contributed to Berkeley by 60SN/A * Kenneth Almquist. 72362SN/A * 80SN/A * Redistribution and use in source and binary forms, with or without 92362SN/A * modification, are permitted provided that the following conditions 100SN/A * are met: 110SN/A * 1. Redistributions of source code must retain the above copyright 120SN/A * notice, this list of conditions and the following disclaimer. 130SN/A * 2. Redistributions in binary form must reproduce the above copyright 140SN/A * notice, this list of conditions and the following disclaimer in the 150SN/A * documentation and/or other materials provided with the distribution. 160SN/A * 3. All advertising materials mentioning features or use of this software 170SN/A * must display the following acknowledgement: 180SN/A * This product includes software developed by the University of 190SN/A * California, Berkeley and its contributors. 200SN/A * 4. Neither the name of the University nor the names of its contributors 212362SN/A * may be used to endorse or promote products derived from this software 222362SN/A * without specific prior written permission. 232362SN/A * 240SN/A * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 250SN/A * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 260SN/A * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 270SN/A * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 280SN/A * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 290SN/A * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 300SN/A * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 310SN/A * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 320SN/A * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 330SN/A * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3417338Smli * SUCH DAMAGE. 3511581Sjuh * 3611581Sjuh * @(#)eval.h 8.2 (Berkeley) 5/4/95 3711581Sjuh * $FreeBSD: head/bin/sh/eval.h 50471 1999-08-27 23:15:48Z peter $ 380SN/A */ 3916651Smullan 400SN/Aextern char *commandname; /* currently executing command */ 410SN/Aextern int exitstatus; /* exit status of last command */ 420SN/Aextern struct strlist *cmdenviron; /* environment for builtin command */ 430SN/A 440SN/A 450SN/Astruct backcmd { /* result of evalbackcmd */ 460SN/A int fd; /* file descriptor to read from */ 470SN/A char *buf; /* buffer */ 480SN/A int nleft; /* number of chars in buffer */ 490SN/A struct job *jp; /* job structure for command */ 50}; 51 52int evalcmd __P((int, char **)); 53void evalstring __P((char *)); 54union node; /* BLETCH for ansi C */ 55void evaltree __P((union node *, int)); 56void evalbackcmd __P((union node *, struct backcmd *)); 57int bltincmd __P((int, char **)); 58int breakcmd __P((int, char **)); 59int returncmd __P((int, char **)); 60int falsecmd __P((int, char **)); 61int truecmd __P((int, char **)); 62int execcmd __P((int, char **)); 63 64/* in_function returns nonzero if we are currently evaluating a function */ 65#define in_function() funcnest 66extern int funcnest; 67extern int evalskip; 68 69/* reasons for skipping commands (see comment on breakcmd routine) */ 70#define SKIPBREAK 1 71#define SKIPCONT 2 72#define SKIPFUNC 3 73#define SKIPFILE 4 74