1 /* Header file for command creation.
3 Copyright (C) 1986-2014 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 #if !defined (COMMAND_H)
23 /* This file defines the public interface for any code wanting to
26 /* Command classes are top-level categories into which commands are
27 broken down for "help" purposes.
29 Notes on classes: class_alias is for alias commands which are not
30 abbreviations of the original command. class-pseudo is for
31 commands which are not really commands nor help topics ("stop"). */
35 /* Special args to help_list */
36 class_deprecated = -3, all_classes = -2, all_commands = -1,
37 /* Classes of commands */
38 no_class = -1, class_run = 0, class_vars, class_stack, class_files,
39 class_support, class_info, class_breakpoint, class_trace,
40 class_alias, class_bookmark, class_obscure, class_maintenance,
41 class_pseudo, class_tui, class_user, class_xdb,
42 no_set_class /* Used for "show" commands that have no corresponding
46 /* FIXME: cagney/2002-03-17: Once cmd_type() has been removed, ``enum
47 cmd_types'' can be moved from "command.h" to "cli-decode.h". */
48 /* Not a set/show command. Note that some commands which begin with
49 "set" or "show" might be in this category, if their syntax does
50 not fall into one of the following categories. */
51 typedef enum cmd_types
59 /* Types of "set" or "show" command. */
60 typedef enum var_types
62 /* "on" or "off". *VAR is an integer which is nonzero for on,
66 /* "on" / "true" / "enable" or "off" / "false" / "disable" or
67 "auto. *VAR is an ``enum auto_boolean''. NOTE: In general a
68 custom show command will need to be implemented - one that for
69 "auto" prints both the "auto" and the current auto-selected
73 /* Unsigned Integer. *VAR is an unsigned int. The user can type
74 0 to mean "unlimited", which is stored in *VAR as UINT_MAX. */
77 /* Like var_uinteger but signed. *VAR is an int. The user can
78 type 0 to mean "unlimited", which is stored in *VAR as
79 INT_MAX. The only remaining use of it is the Python API.
80 Don't use it elsewhere. */
83 /* String which the user enters with escapes (e.g. the user types
84 \n and it is a real newline in the stored string).
85 *VAR is a malloc'd string, or NULL if the string is empty. */
87 /* String which stores what the user types verbatim.
88 *VAR is a malloc'd string, or NULL if the string is empty. */
90 /* String which stores a filename. (*VAR) is a malloc'd string,
91 or "" if the string was empty. */
92 var_optional_filename,
93 /* String which stores a filename. (*VAR) is a malloc'd
96 /* ZeroableInteger. *VAR is an int. Like var_integer except
97 that zero really means zero. */
99 /* ZeroableUnsignedInteger. *VAR is an unsigned int. Zero really
102 /* ZeroableUnsignedInteger with unlimited value. *VAR is an int,
103 but its range is [0, INT_MAX]. -1 stands for unlimited and
104 other negative numbers are not allowed. */
105 var_zuinteger_unlimited,
106 /* Enumerated type. Can only have one of the specified values.
107 *VAR is a char pointer to the name of the element that we
113 /* This structure records one command'd definition. */
114 struct cmd_list_element;
116 /* Forward-declarations of the entry-points of cli/cli-decode.c. */
118 /* API to the manipulation of command lists. */
120 extern int valid_user_defined_cmd_name_p (const char *name);
122 extern struct cmd_list_element *add_cmd (const char *, enum command_class,
123 void (*fun) (char *, int), char *,
124 struct cmd_list_element **);
126 extern struct cmd_list_element *add_alias_cmd (const char *, const char *,
127 enum command_class, int,
128 struct cmd_list_element **);
130 extern struct cmd_list_element *add_prefix_cmd (const char *, enum command_class,
131 void (*fun) (char *, int),
133 struct cmd_list_element **,
135 struct cmd_list_element **);
137 extern struct cmd_list_element *add_abbrev_prefix_cmd (const char *,
142 struct cmd_list_element
144 struct cmd_list_element
147 /* Set the commands corresponding callback. */
149 typedef void cmd_cfunc_ftype (char *args, int from_tty);
150 extern void set_cmd_cfunc (struct cmd_list_element *cmd,
151 cmd_cfunc_ftype *cfunc);
153 typedef void cmd_sfunc_ftype (char *args, int from_tty,
154 struct cmd_list_element *c);
155 extern void set_cmd_sfunc (struct cmd_list_element *cmd,
156 cmd_sfunc_ftype *sfunc);
158 typedef VEC (char_ptr) *completer_ftype (struct cmd_list_element *,
159 const char *, const char *);
161 extern void set_cmd_completer (struct cmd_list_element *, completer_ftype *);
163 /* HACK: cagney/2002-02-23: Code, mostly in tracepoints.c, grubs
164 around in cmd objects to test the value of the commands sfunc(). */
165 extern int cmd_cfunc_eq (struct cmd_list_element *cmd,
166 void (*cfunc) (char *args, int from_tty));
168 /* Each command object has a local context attached to it. */
169 extern void set_cmd_context (struct cmd_list_element *cmd,
171 extern void *get_cmd_context (struct cmd_list_element *cmd);
174 /* Execute CMD's pre/post hook. Throw an error if the command fails.
175 If already executing this pre/post hook, or there is no pre/post
176 hook, the call is silently ignored. */
177 extern void execute_cmd_pre_hook (struct cmd_list_element *cmd);
178 extern void execute_cmd_post_hook (struct cmd_list_element *cmd);
180 /* Return the type of the command. */
181 extern enum cmd_types cmd_type (struct cmd_list_element *cmd);
183 /* Flag for an ambiguous cmd_list result. */
184 #define CMD_LIST_AMBIGUOUS ((struct cmd_list_element *) -1)
186 extern struct cmd_list_element *lookup_cmd (const char **,
187 struct cmd_list_element *, char *,
190 extern struct cmd_list_element *lookup_cmd_1 (const char **,
191 struct cmd_list_element *,
192 struct cmd_list_element **,
195 extern struct cmd_list_element *deprecate_cmd (struct cmd_list_element *,
198 extern void deprecated_cmd_warning (const char *);
200 extern int lookup_cmd_composition (const char *text,
201 struct cmd_list_element **alias,
202 struct cmd_list_element **prefix_cmd,
203 struct cmd_list_element **cmd);
205 extern struct cmd_list_element *add_com (const char *, enum command_class,
206 void (*fun) (char *, int),
209 extern struct cmd_list_element *add_com_alias (const char *, const char *,
210 enum command_class, int);
212 extern struct cmd_list_element *add_info (const char *,
213 void (*fun) (char *, int),
216 extern struct cmd_list_element *add_info_alias (const char *, char *, int);
218 extern VEC (char_ptr) *complete_on_cmdlist (struct cmd_list_element *,
219 const char *, const char *, int);
221 extern VEC (char_ptr) *complete_on_enum (const char *const *enumlist,
222 const char *, const char *);
224 /* Functions that implement commands about CLI commands. */
226 extern void help_list (struct cmd_list_element *, char *,
227 enum command_class, struct ui_file *);
229 /* Method for show a set/show variable's VALUE on FILE. If this
230 method isn't supplied deprecated_show_value_hack() is called (which
232 typedef void (show_value_ftype) (struct ui_file *file,
234 struct cmd_list_element *cmd,
236 /* NOTE: i18n: This function is not i18n friendly. Callers should
237 instead print the value out directly. */
238 extern show_value_ftype deprecated_show_value_hack;
240 extern void add_setshow_enum_cmd (const char *name,
241 enum command_class class,
242 const char *const *enumlist,
245 const char *show_doc,
246 const char *help_doc,
247 cmd_sfunc_ftype *set_func,
248 show_value_ftype *show_func,
249 struct cmd_list_element **set_list,
250 struct cmd_list_element **show_list);
252 extern void add_setshow_auto_boolean_cmd (const char *name,
253 enum command_class class,
254 enum auto_boolean *var,
256 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_boolean_cmd (const char *name,
264 enum command_class class,
266 const char *set_doc, const char *show_doc,
267 const char *help_doc,
268 cmd_sfunc_ftype *set_func,
269 show_value_ftype *show_func,
270 struct cmd_list_element **set_list,
271 struct cmd_list_element **show_list);
273 extern void add_setshow_filename_cmd (const char *name,
274 enum command_class class,
277 const char *show_doc,
278 const char *help_doc,
279 cmd_sfunc_ftype *set_func,
280 show_value_ftype *show_func,
281 struct cmd_list_element **set_list,
282 struct cmd_list_element **show_list);
284 extern void add_setshow_string_cmd (const char *name,
285 enum command_class class,
288 const char *show_doc,
289 const char *help_doc,
290 cmd_sfunc_ftype *set_func,
291 show_value_ftype *show_func,
292 struct cmd_list_element **set_list,
293 struct cmd_list_element **show_list);
295 extern struct cmd_list_element *add_setshow_string_noescape_cmd
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_optional_filename_cmd (const 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_integer_cmd (const 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_uinteger_cmd (const 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_zinteger_cmd (const 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 extern void add_setshow_zuinteger_cmd (const char *name,
352 enum command_class class,
355 const char *show_doc,
356 const char *help_doc,
357 cmd_sfunc_ftype *set_func,
358 show_value_ftype *show_func,
359 struct cmd_list_element **set_list,
360 struct cmd_list_element **show_list);
363 add_setshow_zuinteger_unlimited_cmd (const char *name,
364 enum command_class class,
367 const char *show_doc,
368 const char *help_doc,
369 cmd_sfunc_ftype *set_func,
370 show_value_ftype *show_func,
371 struct cmd_list_element **set_list,
372 struct cmd_list_element **show_list);
374 /* Do a "show" command for each thing on a command list. */
376 extern void cmd_show_list (struct cmd_list_element *, int, char *);
378 /* Used everywhere whenever at least one parameter is required and
379 none is specified. */
381 extern void error_no_arg (char *) ATTRIBUTE_NORETURN;
383 extern void dont_repeat (void);
385 extern struct cleanup *prevent_dont_repeat (void);
387 /* Used to mark commands that don't do anything. If we just leave the
388 function field NULL, the command is interpreted as a help topic, or
389 as a class of commands. */
391 extern void not_just_help_class_command (char *, int);
393 /* Check function pointer. */
394 extern int cmd_func_p (struct cmd_list_element *cmd);
396 /* Call the command function. */
397 extern void cmd_func (struct cmd_list_element *cmd,
398 char *args, int from_tty);
400 #endif /* !defined (COMMAND_H) */