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1/* syntax.h -- Syntax definitions for the shell */
2
3/* Copyright (C) 2000 Free Software Foundation, Inc.
4
5 This file is part of GNU Bash, the Bourne Again SHell.
6
7 Bash is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
10 version.
11
12 Bash is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
16
17 You should have received a copy of the GNU General Public License along
18 with Bash; see the file COPYING. If not, write to the Free Software
19 Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
20
21#ifndef _SYNTAX_H_
22#define _SYNTAX_H_
23
24/* Defines for use by mksyntax.c */
25
26#define slashify_in_quotes "\\`$\"\n"
27#define slashify_in_here_document "\\`$"
28
29#define shell_meta_chars "()<>;&|"
30#define shell_break_chars "()<>;&| \t\n"
31
32#define shell_quote_chars "\"`'"
33
34#if defined (PROCESS_SUBSTITUTION)
35# define shell_exp_chars "$<>"
36#else
37# define shell_exp_chars "$"
38#endif
39
40#if defined (EXTENDED_GLOB)
41# define ext_glob_chars "@*+?!"
42#else
43# define ext_glob_chars ""
44#endif
45#define shell_glob_chars "*?[]^"
46
47/* Defines shared by mksyntax.c and the rest of the shell code. */
48
49/* Values for character flags in syntax tables */
50
51#define CWORD 0x0000 /* nothing special; an ordinary character */
52#define CSHMETA 0x0001 /* shell meta character */
53#define CSHBRK 0x0002 /* shell break character */
54#define CBACKQ 0x0004 /* back quote */
55#define CQUOTE 0x0008 /* shell quote character */
56#define CSPECL 0x0010 /* special character that needs quoting */
57#define CEXP 0x0020 /* shell expansion character */
58#define CBSDQUOTE 0x0040 /* characters escaped by backslash in double quotes */
59#define CBSHDOC 0x0080 /* characters escaped by backslash in here doc */
60#define CGLOB 0x0100 /* globbing characters */
61#define CXGLOB 0x0200 /* extended globbing characters */
62#define CXQUOTE 0x0400 /* cquote + backslash */
63#define CSPECVAR 0x0800 /* single-character shell variable name */
64
65/* Defines for use by the rest of the shell. */
66extern const int sh_syntaxtab[];
67
68#define shellmeta(c) (sh_syntaxtab[(c)] & CSHMETA)
69#define shellbreak(c) (sh_syntaxtab[(c)] & CSHBRK)
70#define shellquote(c) (sh_syntaxtab[(c)] & CQUOTE)
71
72#if defined (PROCESS_SUBSTITUTION)
73# define shellexp(c) ((c) == '$' || (c) == '<' || (c) == '>')
74#else
75# define shellexp(c) ((c) == '$')
76#endif
77
78#if defined (EXTENDED_GLOB)
79# define PATTERN_CHAR(c) \
80 ((c) == '@' || (c) == '*' || (c) == '+' || (c) == '?' || (c) == '!')
81#else
82# define PATTERN_CHAR(c) 0
83#endif
84
85#define GLOB_CHAR(c) \
86 ((c) == '*' || (c) == '?' || (c) == '[' || (c) == ']' || (c) == '^')
87
88#define CTLESC '\001'
89#define CTLNUL '\177'
90
91#endif /* _SYNTAX_H_ */