syntax.h

   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. */
  66 extern 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_ */