| /* $NetBSD: parser.h,v 1.17 2004/06/26 22:09:49 dsl Exp $ */ | |
| /*- | |
| * Copyright (c) 1991, 1993 | |
| * 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. 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. | |
| * | |
| * @(#)parser.h 8.3 (Berkeley) 5/4/95 | |
| */ | |
| /* control characters in argument strings */ | |
| #define CTL_FIRST '\201' /* first 'special' character */ | |
| #define CTLESC '\201' /* escape next character */ | |
| #define CTLVAR '\202' /* variable defn */ | |
| #define CTLENDVAR '\203' | |
| #define CTLBACKQ '\204' | |
| #define CTLQUOTE 01 /* ored with CTLBACKQ code if in quotes */ | |
| /* CTLBACKQ | CTLQUOTE == '\205' */ | |
| #define CTLARI '\206' /* arithmetic expression */ | |
| #define CTLENDARI '\207' | |
| #define CTLQUOTEMARK '\210' | |
| #define CTLQUOTEEND '\211' /* only inside ${...} */ | |
| #define CTL_LAST '\211' /* last 'special' character */ | |
| /* variable substitution byte (follows CTLVAR) */ | |
| #define VSTYPE 0x0f /* type of variable substitution */ | |
| #define VSNUL 0x10 /* colon--treat the empty string as unset */ | |
| #define VSQUOTE 0x80 /* inside double quotes--suppress splitting */ | |
| /* values of VSTYPE field */ | |
| #define VSNORMAL 0x1 /* normal variable: $var or ${var} */ | |
| #define VSMINUS 0x2 /* ${var-text} */ | |
| #define VSPLUS 0x3 /* ${var+text} */ | |
| #define VSQUESTION 0x4 /* ${var?message} */ | |
| #define VSASSIGN 0x5 /* ${var=text} */ | |
| #define VSTRIMLEFT 0x6 /* ${var#pattern} */ | |
| #define VSTRIMLEFTMAX 0x7 /* ${var##pattern} */ | |
| #define VSTRIMRIGHT 0x8 /* ${var%pattern} */ | |
| #define VSTRIMRIGHTMAX 0x9 /* ${var%%pattern} */ | |
| #define VSLENGTH 0xa /* ${#var} */ | |
| /* | |
| * 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) | |
| extern int whichprompt; /* 1 == PS1, 2 == PS2 */ | |
| union node *parsecmd(int); | |
| void fixredir(union node *, const char *, int); | |
| int goodname(char *); | |
| const char *getprompt(void *); |