src/flags.h

   1 /* flags.h -- a list of all the flags that the shell knows about.  You add
   2    a flag to this program by adding the name here, and in flags.c. */
   3
   4 /* Copyright (C) 1993-2020 Free Software Foundation, Inc.
   5
   6    This file is part of GNU Bush, the Bourne Again SHell.
   7
   8    Bush is free software: you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation, either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    Bush is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with Bush.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #if !defined (_FLAGS_H_)
  23 #define _FLAGS_H_
  24
  25 #include "stdc.h"
  26
  27 /* Welcome to the world of Un*x, where everything is slightly backwards. */
  28 #define FLAG_ON '-'
  29 #define FLAG_OFF '+'
  30
  31 #define FLAG_ERROR -1
  32 #define FLAG_UNKNOWN (int *)0
  33
  34 /* The thing that we build the array of flags out of. */
  35 struct flags_alist {
  36   char name;
  37   int *value;
  38 };
  39
  40 extern const struct flags_alist shell_flags[];
  41 extern char optflags[];
  42
  43 extern int
  44   mark_modified_vars, errexit_flag, exit_immediately_on_error,
  45   disallow_filename_globbing,
  46   place_keywords_in_env, read_but_dont_execute,
  47   just_one_command, unbound_vars_is_error, echo_input_at_read, verbose_flag,
  48   echo_command_at_execute, debug_info, noclobber,
  49   hashing_enabled, forced_interactive, privileged_mode, jobs_m_flag,
  50   asynchronous_notification, interactive_comments, no_symbolic_links,
  51   function_trace_mode, error_trace_mode, pipefail_opt;
  52
  53 /* -c, -s invocation options -- not really flags, but they show up in $- */
  54 extern int want_pending_command, read_from_stdin;
  55
  56 #if 0
  57 extern int lexical_scoping;
  58 #endif
  59
  60 #if defined (BRACE_EXPANSION)
  61 extern int brace_expansion;
  62 #endif
  63
  64 #if defined (BANG_HISTORY)
  65 extern int history_expansion;
  66 extern int histexp_flag;
  67 #endif /* BANG_HISTORY */
  68
  69 #if defined (RESTRICTED_SHELL)
  70 extern int restricted;
  71 extern int restricted_shell;
  72 #endif /* RESTRICTED_SHELL */
  73
  74 extern int *find_flag PARAMS((int));
  75 extern int change_flag PARAMS((int, int));
  76 extern char *which_set_flags PARAMS((void));
  77 extern void reset_shell_flags PARAMS((void));
  78
  79 extern char *get_current_flags PARAMS((void));
  80 extern void set_current_flags PARAMS((const char *));
  81
  82 extern void initialize_flags PARAMS((void));
  83
  84 /* A macro for efficiency. */
  85 #define change_flag_char(flag, on_or_off)  change_flag (flag, on_or_off)
  86
  87 #endif /* _FLAGS_H_ */