1 /* Header file for command-reading library command.c.
3 Copyright (C) 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1999, 2000,
4 2002, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 #if !defined (COMMAND_H)
22 /* Command classes are top-level categories into which commands are broken
23 down for "help" purposes.
24 Notes on classes: class_alias is for alias commands which are not
25 abbreviations of the original command. class-pseudo is for
26 commands which are not really commands nor help topics ("stop"). */
30 /* Special args to help_list */
31 class_deprecated = -3, all_classes = -2, all_commands = -1,
32 /* Classes of commands */
33 no_class = -1, class_run = 0, class_vars, class_stack,
34 class_files, class_support, class_info, class_breakpoint, class_trace,
35 class_alias, class_obscure, class_user, class_maintenance,
36 class_pseudo, class_tui, class_xdb
39 /* FIXME: cagney/2002-03-17: Once cmd_type() has been removed, ``enum
40 cmd_types'' can be moved from "command.h" to "cli-decode.h". */
41 /* Not a set/show command. Note that some commands which begin with
42 "set" or "show" might be in this category, if their syntax does
43 not fall into one of the following categories. */
44 typedef enum cmd_types
52 /* Types of "set" or "show" command. */
53 typedef enum var_types
55 /* "on" or "off". *VAR is an integer which is nonzero for on,
59 /* "on" / "true" / "enable" or "off" / "false" / "disable" or
60 "auto. *VAR is an ``enum auto_boolean''. NOTE: In general a
61 custom show command will need to be implemented - one that for
62 "auto" prints both the "auto" and the current auto-selected
66 /* Unsigned Integer. *VAR is an unsigned int. The user can type 0
67 to mean "unlimited", which is stored in *VAR as UINT_MAX. */
70 /* Like var_uinteger but signed. *VAR is an int. The user can type 0
71 to mean "unlimited", which is stored in *VAR as INT_MAX. */
74 /* String which the user enters with escapes (e.g. the user types \n and
75 it is a real newline in the stored string).
76 *VAR is a malloc'd string, or NULL if the string is empty. */
78 /* String which stores what the user types verbatim.
79 *VAR is a malloc'd string, or NULL if the string is empty. */
81 /* String which stores a filename. (*VAR) is a malloc'd string,
82 or "" if the string was empty. */
83 var_optional_filename,
84 /* String which stores a filename. (*VAR) is a malloc'd
87 /* ZeroableInteger. *VAR is an int. Like Unsigned Integer except
88 that zero really means zero. */
90 /* Enumerated type. Can only have one of the specified values. *VAR is a
91 char pointer to the name of the element that we find. */
96 /* This structure records one command'd definition. */
97 struct cmd_list_element;
99 /* Forward-declarations of the entry-points of cli/cli-decode.c. */
101 extern struct cmd_list_element *add_cmd (char *, enum command_class,
102 void (*fun) (char *, int), char *,
103 struct cmd_list_element **);
105 extern struct cmd_list_element *add_alias_cmd (char *, char *,
106 enum command_class, int,
107 struct cmd_list_element **);
109 extern struct cmd_list_element *add_prefix_cmd (char *, enum command_class,
110 void (*fun) (char *, int),
112 struct cmd_list_element **,
114 struct cmd_list_element **);
116 extern struct cmd_list_element *add_abbrev_prefix_cmd (char *,
121 struct cmd_list_element
123 struct cmd_list_element
126 /* Set the commands corresponding callback. */
128 typedef void cmd_cfunc_ftype (char *args, int from_tty);
129 extern void set_cmd_cfunc (struct cmd_list_element *cmd,
130 cmd_cfunc_ftype *cfunc);
132 typedef void cmd_sfunc_ftype (char *args, int from_tty,
133 struct cmd_list_element *c);
134 extern void set_cmd_sfunc (struct cmd_list_element *cmd,
135 cmd_sfunc_ftype *sfunc);
137 extern void set_cmd_completer (struct cmd_list_element *cmd,
138 char **(*completer) (char *text, char *word));
140 /* HACK: cagney/2002-02-23: Code, mostly in tracepoints.c, grubs
141 around in cmd objects to test the value of the commands sfunc(). */
142 extern int cmd_cfunc_eq (struct cmd_list_element *cmd,
143 void (*cfunc) (char *args, int from_tty));
145 /* Each command object has a local context attached to it. . */
146 extern void set_cmd_context (struct cmd_list_element *cmd, void *context);
147 extern void *get_cmd_context (struct cmd_list_element *cmd);
150 /* Execute CMD's pre/post hook. Throw an error if the command fails.
151 If already executing this pre/post hook, or there is no pre/post
152 hook, the call is silently ignored. */
153 extern void execute_cmd_pre_hook (struct cmd_list_element *cmd);
154 extern void execute_cmd_post_hook (struct cmd_list_element *cmd);
156 /* Return the type of the command. */
157 extern enum cmd_types cmd_type (struct cmd_list_element *cmd);
160 extern struct cmd_list_element *lookup_cmd (char **,
161 struct cmd_list_element *, char *,
164 extern struct cmd_list_element *lookup_cmd_1 (char **,
165 struct cmd_list_element *,
166 struct cmd_list_element **,
169 extern struct cmd_list_element *
170 deprecate_cmd (struct cmd_list_element *, char * );
173 deprecated_cmd_warning (char **);
176 lookup_cmd_composition (char *text,
177 struct cmd_list_element **alias,
178 struct cmd_list_element **prefix_cmd,
179 struct cmd_list_element **cmd);
181 extern struct cmd_list_element *add_com (char *, enum command_class,
182 void (*fun) (char *, int), char *);
184 extern struct cmd_list_element *add_com_alias (char *, char *,
185 enum command_class, int);
187 extern struct cmd_list_element *add_info (char *, void (*fun) (char *, int),
190 extern struct cmd_list_element *add_info_alias (char *, char *, int);
192 extern char **complete_on_cmdlist (struct cmd_list_element *, char *, char *);
194 extern char **complete_on_enum (const char *enumlist[], char *, char *);
196 extern void help_cmd (char *, struct ui_file *);
198 extern void help_list (struct cmd_list_element *, char *,
199 enum command_class, struct ui_file *);
201 extern void help_cmd_list (struct cmd_list_element *, enum command_class,
202 char *, int, struct ui_file *);
204 /* NOTE: cagney/2005-02-21: Since every set command should be paired
205 with a corresponding show command (i.e., add_setshow_*) this call
206 should not be needed. Unfortunatly some are not (e.g.,
207 "maintenance <variable> <value>") and those need to be fixed. */
208 extern struct cmd_list_element *deprecated_add_set_cmd (char *name, enum
210 var_types var_type, void *var,
212 struct cmd_list_element **list);
214 /* Method for show a set/show variable's VALUE on FILE. If this
215 method isn't supplied deprecated_show_value_hack() is called (which
217 typedef void (show_value_ftype) (struct ui_file *file,
219 struct cmd_list_element *cmd,
221 /* NOTE: i18n: This function is not i18n friendly. Callers should
222 instead print the value out directly. */
223 extern show_value_ftype deprecated_show_value_hack;
225 extern void add_setshow_enum_cmd (char *name,
226 enum command_class class,
227 const char *enumlist[],
230 const char *show_doc,
231 const char *help_doc,
232 cmd_sfunc_ftype *set_func,
233 show_value_ftype *show_func,
234 struct cmd_list_element **set_list,
235 struct cmd_list_element **show_list);
237 extern void add_setshow_auto_boolean_cmd (char *name,
238 enum command_class class,
239 enum auto_boolean *var,
241 const char *show_doc,
242 const char *help_doc,
243 cmd_sfunc_ftype *set_func,
244 show_value_ftype *show_func,
245 struct cmd_list_element **set_list,
246 struct cmd_list_element **show_list);
248 extern void add_setshow_boolean_cmd (char *name,
249 enum command_class class,
251 const char *set_doc, const char *show_doc,
252 const char *help_doc,
253 cmd_sfunc_ftype *set_func,
254 show_value_ftype *show_func,
255 struct cmd_list_element **set_list,
256 struct cmd_list_element **show_list);
258 extern void add_setshow_filename_cmd (char *name,
259 enum command_class class,
262 const char *show_doc,
263 const char *help_doc,
264 cmd_sfunc_ftype *set_func,
265 show_value_ftype *show_func,
266 struct cmd_list_element **set_list,
267 struct cmd_list_element **show_list);
269 extern void add_setshow_string_cmd (char *name,
270 enum command_class class,
273 const char *show_doc,
274 const char *help_doc,
275 cmd_sfunc_ftype *set_func,
276 show_value_ftype *show_func,
277 struct cmd_list_element **set_list,
278 struct cmd_list_element **show_list);
280 extern void add_setshow_string_noescape_cmd (char *name,
281 enum command_class class,
284 const char *show_doc,
285 const char *help_doc,
286 cmd_sfunc_ftype *set_func,
287 show_value_ftype *show_func,
288 struct cmd_list_element **set_list,
289 struct cmd_list_element **show_list);
291 extern void add_setshow_optional_filename_cmd (char *name,
292 enum command_class class,
295 const char *show_doc,
296 const char *help_doc,
297 cmd_sfunc_ftype *set_func,
298 show_value_ftype *show_func,
299 struct cmd_list_element **set_list,
300 struct cmd_list_element **show_list);
302 extern void add_setshow_integer_cmd (char *name,
303 enum command_class class,
306 const char *show_doc,
307 const char *help_doc,
308 cmd_sfunc_ftype *set_func,
309 show_value_ftype *show_func,
310 struct cmd_list_element **set_list,
311 struct cmd_list_element **show_list);
313 extern void add_setshow_uinteger_cmd (char *name,
314 enum command_class class,
317 const char *show_doc,
318 const char *help_doc,
319 cmd_sfunc_ftype *set_func,
320 show_value_ftype *show_func,
321 struct cmd_list_element **set_list,
322 struct cmd_list_element **show_list);
324 extern void add_setshow_zinteger_cmd (char *name,
325 enum command_class class,
328 const char *show_doc,
329 const char *help_doc,
330 cmd_sfunc_ftype *set_func,
331 show_value_ftype *show_func,
332 struct cmd_list_element **set_list,
333 struct cmd_list_element **show_list);
335 /* Do a "show" command for each thing on a command list. */
337 extern void cmd_show_list (struct cmd_list_element *, int, char *);
339 extern NORETURN void error_no_arg (char *) ATTR_NORETURN;
341 extern void dont_repeat (void);
343 /* Used to mark commands that don't do anything. If we just leave the
344 function field NULL, the command is interpreted as a help topic, or
345 as a class of commands. */
347 extern void not_just_help_class_command (char *, int);
349 /* check function pointer */
350 extern int cmd_func_p (struct cmd_list_element *cmd);
352 /* call the command function */
353 extern void cmd_func (struct cmd_list_element *cmd, char *args, int from_tty);
355 #endif /* !defined (COMMAND_H) */