| /*- |
| * Copyright (c) 1991 The Regents of the University of California. |
| * 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. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * This product includes software developed by the University of |
| * California, Berkeley and its contributors. |
| * 4. 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. |
| * |
| * from: @(#)parser.h 5.1 (Berkeley) 3/7/91 |
| * parser.h,v 1.4 1993/08/01 18:58:37 mycroft Exp |
| */ |
| |
| /* control characters in argument strings */ |
| #define CTLESC '\201' |
| #define CTLVAR '\202' |
| #define CTLENDVAR '\203' |
| #define CTLBACKQ '\204' |
| #define CTLQUOTE 01 /* ored with CTLBACKQ code if in quotes */ |
| |
| /* variable substitution byte (follows CTLVAR) */ |
| #define VSTYPE 07 /* type of variable substitution */ |
| #define VSNUL 040 /* colon--treat the empty string as unset */ |
| #define VSQUOTE 0100 /* inside double quotes--suppress splitting */ |
| |
| /* values of VSTYPE field */ |
| #define VSNORMAL 1 /* normal variable: $var or ${var} */ |
| #define VSMINUS 2 /* ${var-text} */ |
| #define VSPLUS 3 /* ${var+text} */ |
| #define VSQUESTION 4 /* ${var?message} */ |
| #define VSASSIGN 5 /* ${var=text} */ |
| |
| |
| /* |
| * NEOF is returned by parsecmd when it encounters an end of file. It |
| * must be distinct from NULL, so we use the address of a variable that |
| * happens to be handy. |
| */ |
| extern int tokpushback; |
| #define NEOF ((union node *)&tokpushback) |
| |
| |
| #ifdef __STDC__ |
| union node *parsecmd(int); |
| int goodname(char *); |
| #else |
| union node *parsecmd(); |
| int goodname(); |
| #endif |
