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, 2010, 2011 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
23 broken down for "help" purposes.
25 Notes on classes: class_alias is for alias commands which are not
26 abbreviations of the original command. class-pseudo is for
27 commands which are not really commands nor help topics ("stop"). */
31 /* Special args to help_list */
32 class_deprecated = -3, all_classes = -2, all_commands = -1,
33 /* Classes of commands */
34 no_class = -1, class_run = 0, class_vars, class_stack, class_files,
35 class_support, class_info, class_breakpoint, class_trace,
36 class_alias, class_bookmark, class_obscure, class_maintenance,
37 class_pseudo, class_tui, class_user, class_xdb,
38 no_set_class /* Used for "show" commands that have no corresponding
42 /* FIXME: cagney/2002-03-17: Once cmd_type() has been removed, ``enum
43 cmd_types'' can be moved from "command.h" to "cli-decode.h". */
44 /* Not a set/show command. Note that some commands which begin with
45 "set" or "show" might be in this category, if their syntax does
46 not fall into one of the following categories. */
47 typedef enum cmd_types
55 /* Types of "set" or "show" command. */
56 typedef enum var_types
58 /* "on" or "off". *VAR is an integer which is nonzero for on,
62 /* "on" / "true" / "enable" or "off" / "false" / "disable" or
63 "auto. *VAR is an ``enum auto_boolean''. NOTE: In general a
64 custom show command will need to be implemented - one that for
65 "auto" prints both the "auto" and the current auto-selected
69 /* Unsigned Integer. *VAR is an unsigned int. The user can type
70 0 to mean "unlimited", which is stored in *VAR as UINT_MAX. */
73 /* Like var_uinteger but signed. *VAR is an int. The user can
74 type 0 to mean "unlimited", which is stored in *VAR as
78 /* String which the user enters with escapes (e.g. the user types
79 \n and it is a real newline in the stored string).
80 *VAR is a malloc'd string, or NULL if the string is empty. */
82 /* String which stores what the user types verbatim.
83 *VAR is a malloc'd string, or NULL if the string is empty. */
85 /* String which stores a filename. (*VAR) is a malloc'd string,
86 or "" if the string was empty. */
87 var_optional_filename,
88 /* String which stores a filename. (*VAR) is a malloc'd
91 /* ZeroableInteger. *VAR is an int. Like Unsigned Integer except
92 that zero really means zero. */
94 /* ZeroableUnsignedInteger. *VAR is an unsigned int. Zero really
97 /* Enumerated type. Can only have one of the specified values.
98 *VAR is a char pointer to the name of the element that we
104 /* This structure records one command'd definition. */
105 struct cmd_list_element;
107 /* Forward-declarations of the entry-points of cli/cli-decode.c. */
109 extern int valid_user_defined_cmd_name_p (const char *name);
111 extern struct cmd_list_element *add_cmd (char *, enum command_class,
112 void (*fun) (char *, int), char *,
113 struct cmd_list_element **);
115 extern struct cmd_list_element *add_alias_cmd (char *, char *,
116 enum command_class, int,
117 struct cmd_list_element **);
119 extern struct cmd_list_element *add_prefix_cmd (char *, enum command_class,
120 void (*fun) (char *, int),
122 struct cmd_list_element **,
124 struct cmd_list_element **);
126 extern struct cmd_list_element *add_abbrev_prefix_cmd (char *,
131 struct cmd_list_element
133 struct cmd_list_element
136 /* Set the commands corresponding callback. */
138 typedef void cmd_cfunc_ftype (char *args, int from_tty);
139 extern void set_cmd_cfunc (struct cmd_list_element *cmd,
140 cmd_cfunc_ftype *cfunc);
142 typedef void cmd_sfunc_ftype (char *args, int from_tty,
143 struct cmd_list_element *c);
144 extern void set_cmd_sfunc (struct cmd_list_element *cmd,
145 cmd_sfunc_ftype *sfunc);
147 extern void set_cmd_completer (struct cmd_list_element *,
148 char **(*completer) (struct cmd_list_element *,
151 /* HACK: cagney/2002-02-23: Code, mostly in tracepoints.c, grubs
152 around in cmd objects to test the value of the commands sfunc(). */
153 extern int cmd_cfunc_eq (struct cmd_list_element *cmd,
154 void (*cfunc) (char *args, int from_tty));
156 /* Each command object has a local context attached to it. */
157 extern void set_cmd_context (struct cmd_list_element *cmd,
159 extern void *get_cmd_context (struct cmd_list_element *cmd);
162 /* Execute CMD's pre/post hook. Throw an error if the command fails.
163 If already executing this pre/post hook, or there is no pre/post
164 hook, the call is silently ignored. */
165 extern void execute_cmd_pre_hook (struct cmd_list_element *cmd);
166 extern void execute_cmd_post_hook (struct cmd_list_element *cmd);
168 /* Return the type of the command. */
169 extern enum cmd_types cmd_type (struct cmd_list_element *cmd);
172 extern struct cmd_list_element *lookup_cmd (char **,
173 struct cmd_list_element *, char *,
176 extern struct cmd_list_element *lookup_cmd_1 (char **,
177 struct cmd_list_element *,
178 struct cmd_list_element **,
181 extern struct cmd_list_element *deprecate_cmd (struct cmd_list_element *,
184 extern void deprecated_cmd_warning (char **);
186 extern int lookup_cmd_composition (char *text,
187 struct cmd_list_element **alias,
188 struct cmd_list_element **prefix_cmd,
189 struct cmd_list_element **cmd);
191 extern struct cmd_list_element *add_com (char *, enum command_class,
192 void (*fun) (char *, int),
195 extern struct cmd_list_element *add_com_alias (char *, char *,
196 enum command_class, int);
198 extern struct cmd_list_element *add_info (char *,
199 void (*fun) (char *, int),
202 extern struct cmd_list_element *add_info_alias (char *, char *, int);
204 extern char **complete_on_cmdlist (struct cmd_list_element *,
207 extern char **complete_on_enum (const char *enumlist[],
210 extern void help_cmd (char *, struct ui_file *);
212 extern void help_list (struct cmd_list_element *, char *,
213 enum command_class, struct ui_file *);
215 extern void help_cmd_list (struct cmd_list_element *,
217 char *, int, struct ui_file *);
219 /* Method for show a set/show variable's VALUE on FILE. If this
220 method isn't supplied deprecated_show_value_hack() is called (which
222 typedef void (show_value_ftype) (struct ui_file *file,
224 struct cmd_list_element *cmd,
226 /* NOTE: i18n: This function is not i18n friendly. Callers should
227 instead print the value out directly. */
228 extern show_value_ftype deprecated_show_value_hack;
230 extern void add_setshow_enum_cmd (char *name,
231 enum command_class class,
232 const char *enumlist[],
235 const char *show_doc,
236 const char *help_doc,
237 cmd_sfunc_ftype *set_func,
238 show_value_ftype *show_func,
239 struct cmd_list_element **set_list,
240 struct cmd_list_element **show_list);
242 extern void add_setshow_auto_boolean_cmd (char *name,
243 enum command_class class,
244 enum auto_boolean *var,
246 const char *show_doc,
247 const char *help_doc,
248 cmd_sfunc_ftype *set_func,
249 show_value_ftype *show_func,
250 struct cmd_list_element **set_list,
251 struct cmd_list_element **show_list);
253 extern void add_setshow_boolean_cmd (char *name,
254 enum command_class class,
256 const char *set_doc, const char *show_doc,
257 const char *help_doc,
258 cmd_sfunc_ftype *set_func,
259 show_value_ftype *show_func,
260 struct cmd_list_element **set_list,
261 struct cmd_list_element **show_list);
263 extern void add_setshow_filename_cmd (char *name,
264 enum command_class class,
267 const char *show_doc,
268 const char *help_doc,
269 cmd_sfunc_ftype *set_func,
270 show_value_ftype *show_func,
271 struct cmd_list_element **set_list,
272 struct cmd_list_element **show_list);
274 extern void add_setshow_string_cmd (char *name,
275 enum command_class class,
278 const char *show_doc,
279 const char *help_doc,
280 cmd_sfunc_ftype *set_func,
281 show_value_ftype *show_func,
282 struct cmd_list_element **set_list,
283 struct cmd_list_element **show_list);
285 extern void add_setshow_string_noescape_cmd (char *name,
286 enum command_class class,
289 const char *show_doc,
290 const char *help_doc,
291 cmd_sfunc_ftype *set_func,
292 show_value_ftype *show_func,
293 struct cmd_list_element **set_list,
294 struct cmd_list_element **show_list);
296 extern void add_setshow_optional_filename_cmd (char *name,
297 enum command_class class,
300 const char *show_doc,
301 const char *help_doc,
302 cmd_sfunc_ftype *set_func,
303 show_value_ftype *show_func,
304 struct cmd_list_element **set_list,
305 struct cmd_list_element **show_list);
307 extern void add_setshow_integer_cmd (char *name,
308 enum command_class class,
311 const char *show_doc,
312 const char *help_doc,
313 cmd_sfunc_ftype *set_func,
314 show_value_ftype *show_func,
315 struct cmd_list_element **set_list,
316 struct cmd_list_element **show_list);
318 extern void add_setshow_uinteger_cmd (char *name,
319 enum command_class class,
322 const char *show_doc,
323 const char *help_doc,
324 cmd_sfunc_ftype *set_func,
325 show_value_ftype *show_func,
326 struct cmd_list_element **set_list,
327 struct cmd_list_element **show_list);
329 extern void add_setshow_zinteger_cmd (char *name,
330 enum command_class class,
333 const char *show_doc,
334 const char *help_doc,
335 cmd_sfunc_ftype *set_func,
336 show_value_ftype *show_func,
337 struct cmd_list_element **set_list,
338 struct cmd_list_element **show_list);
340 extern void add_setshow_zuinteger_cmd (char *name,
341 enum command_class class,
344 const char *show_doc,
345 const char *help_doc,
346 cmd_sfunc_ftype *set_func,
347 show_value_ftype *show_func,
348 struct cmd_list_element **set_list,
349 struct cmd_list_element **show_list);
351 /* Do a "show" command for each thing on a command list. */
353 extern void cmd_show_list (struct cmd_list_element *, int, char *);
355 /* Used everywhere whenever at least one parameter is required and
356 none is specified. */
358 extern void error_no_arg (char *) ATTRIBUTE_NORETURN;
360 extern void dont_repeat (void);
362 extern struct cleanup *prevent_dont_repeat (void);
364 /* Used to mark commands that don't do anything. If we just leave the
365 function field NULL, the command is interpreted as a help topic, or
366 as a class of commands. */
368 extern void not_just_help_class_command (char *, int);
370 /* Check function pointer. */
371 extern int cmd_func_p (struct cmd_list_element *cmd);
373 /* Call the command function. */
374 extern void cmd_func (struct cmd_list_element *cmd,
375 char *args, int from_tty);
377 #endif /* !defined (COMMAND_H) */