1 /*- 2 * Copyright (c) 1988, 1989, 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * Copyright (c) 1988, 1989 by Adam de Boor 5 * Copyright (c) 1989 by Berkeley Softworks 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Adam de Boor. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * $FreeBSD$ 40 */ 41 42 #ifndef shell_h_6002e3b8 43 #define shell_h_6002e3b8 44 45 #include <sys/queue.h> 46 47 #include "str.h" 48 #include "util.h" 49 50 /** 51 * Shell Specifications: 52 * 53 * Some special stuff goes on if a shell doesn't have error control. In such 54 * a case, errCheck becomes a printf template for echoing the command, 55 * should echoing be on and ignErr becomes another printf template for 56 * executing the command while ignoring the return status. If either of these 57 * strings is empty when hasErrCtl is FALSE, the command will be executed 58 * anyway as is and if it causes an error, so be it. 59 */ 60 struct Shell { 61 TAILQ_ENTRY(Shell) link; /* link all shell descriptions */ 62 63 /* 64 * the name of the shell. For Bourne and C shells, this is used 65 * only to find the shell description when used as the single 66 * source of a .SHELL target. 67 */ 68 char *name; 69 70 char *path; /* full path to the shell */ 71 72 /* True if both echoOff and echoOn defined */ 73 Boolean hasEchoCtl; 74 75 char *echoOff; /* command to turn off echo */ 76 char *echoOn; /* command to turn it back on */ 77 78 /* 79 * What the shell prints, and its length, when given the 80 * echo-off command. This line will not be printed when 81 * received from the shell. This is usually the command which 82 * was executed to turn off echoing 83 */ 84 char *noPrint; 85 86 /* set if can control error checking for individual commands */ 87 Boolean hasErrCtl; 88 89 /* string to turn error checking on */ 90 char *errCheck; 91 92 /* string to turn off error checking */ 93 char *ignErr; 94 95 char *echo; /* command line flag: echo commands */ 96 char *exit; /* command line flag: exit on error */ 97 98 ArgArray builtins; /* ordered list of shell builtins */ 99 char *meta; /* shell meta characters */ 100 101 Boolean unsetenv; /* unsetenv("ENV") before exec */ 102 }; 103 TAILQ_HEAD(Shells, Shell); 104 105 extern struct Shell *commandShell; 106 107 void Shell_Init(void); 108 Boolean Shell_Parse(const char []); 109 110 #endif /* shell_h_6002e3b8 */ 111