152 lines
5.4 KiB
C
152 lines
5.4 KiB
C
/* Header file for command-reading library command.c.
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Copyright (C) 1986, 1989, 1990 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifndef _COMMAND_H_INCLUDED
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#define _COMMAND_H_INCLUDED
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/* Not a set/show command. Note that some commands which begin with
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"set" or "show" might be in this category, if their syntax does
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not fall into one of the following categories. */
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typedef enum cmd_types {
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not_set_cmd,
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set_cmd,
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show_cmd,
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} cmd_types;
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/* Types of "set" or "show" command. */
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typedef enum var_types {
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/* "on" or "off". *VAR is an integer which is nonzero for on,
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zero for off. */
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var_boolean,
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/* Unsigned Integer. *VAR is an unsigned int. The user can type 0
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to mean "unlimited", which is stored in *VAR as UINT_MAX. */
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var_uinteger,
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/* String which the user enters with escapes (e.g. the user types \n and
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it is a real newline in the stored string).
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*VAR is a malloc'd string, or NULL if the string is empty. */
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var_string,
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/* String which stores what the user types verbatim.
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*VAR is a malloc'd string, or NULL if the string is empty. */
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var_string_noescape,
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/* String which stores a filename.
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*VAR is a malloc'd string, or NULL if the string is empty. */
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var_filename,
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/* ZeroableInteger. *VAR is an int. Like Unsigned Integer except
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that zero really means zero. */
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var_zinteger,
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} var_types;
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/* This structure records one command'd definition. */
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struct cmd_list_element
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{
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/* Points to next command in this list. */
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struct cmd_list_element *next;
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/* Name of this command. */
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char *name;
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/* Command class; class values are chosen by application program. */
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enum command_class class;
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/* Function definition of this command.
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Zero for command class names and for help topics that
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are not really commands. */
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void (*function) ();
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# define NO_FUNCTION ((void (*)()) 0 )
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/* Documentation of this command (or help topic).
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First line is brief documentation; remaining lines form, with it,
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the full documentation. First line should end with a period.
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Entire string should also end with a period, not a newline. */
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char *doc;
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/* Auxiliary information.
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It is up to the calling program to decide what this means. */
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char *aux;
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/* Nonzero identifies a prefix command. For them, the address
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of the variable containing the list of subcommands. */
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struct cmd_list_element **prefixlist;
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/* For prefix commands only:
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String containing prefix commands to get here: this one
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plus any others needed to get to it. Should end in a space.
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It is used before the word "command" in describing the
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commands reached through this prefix. */
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char *prefixname;
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/* For prefix commands only:
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nonzero means do not get an error if subcommand is not
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recognized; call the prefix's own function in that case. */
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char allow_unknown;
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/* Nonzero says this is an abbreviation, and should not
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be mentioned in lists of commands.
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This allows "br<tab>" to complete to "break", which it
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otherwise wouldn't. */
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char abbrev_flag;
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/* Completion routine for this command. */
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char **(*completer)();
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/* Type of "set" or "show" command (or SET_NOT_SET if not "set"
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or "show"). */
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cmd_types type;
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/* Pointer to variable affected by "set" and "show". Doesn't matter
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if type is not_set. */
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char *var;
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/* What kind of variable is *VAR? */
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var_types var_type;
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/* Pointer to command strings of user-defined commands */
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struct command_line *user_commands;
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};
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/* Forward-declarations of the entry-points of command.c. */
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extern struct cmd_list_element *add_cmd ();
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extern struct cmd_list_element *add_alias_cmd ();
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extern struct cmd_list_element *add_prefix_cmd ();
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extern struct cmd_list_element *add_abbrev_prefix_cmd ();
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extern struct cmd_list_element *lookup_cmd (), *lookup_cmd_1 ();
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extern void add_com ();
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extern void add_com_alias ();
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extern void add_info ();
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extern void add_info_alias ();
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extern char **complete_on_cmdlist ();
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extern void delete_cmd ();
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extern void help_cmd ();
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extern struct cmd_list_element *add_set_cmd ();
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extern struct cmd_list_element *add_show_from_set ();
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/* Do a "set" or "show" command. ARG is NULL if no argument, or the text
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of the argument, and FROM_TTY is nonzero if this command is being entered
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directly by the user (i.e. these are just like any other
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command). C is the command list element for the command. */
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extern void do_setshow_command ();
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/* Do a "show" command for each thing on a command list. */
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extern void cmd_show_list ();
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extern void error_no_arg (); /* Print error for missing argument */
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extern void dont_repeat (); /* Avoid auto-repeat of command */
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#endif /* _COMMAND_H_INCLUDED */
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