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 /* ZeroableUnsignedInteger. *VAR is an unsigned int. Zero really
93 /* Enumerated type. Can only have one of the specified values. *VAR is a
94 char pointer to the name of the element that we find. */
99 /* This structure records one command'd definition. */
100 struct cmd_list_element;
102 /* Forward-declarations of the entry-points of cli/cli-decode.c. */
104 extern struct cmd_list_element *add_cmd (char *, enum command_class,
105 void (*fun) (char *, int), char *,
106 struct cmd_list_element **);
108 extern struct cmd_list_element *add_alias_cmd (char *, char *,
109 enum command_class, int,
110 struct cmd_list_element **);
112 extern struct cmd_list_element *add_prefix_cmd (char *, enum command_class,
113 void (*fun) (char *, int),
115 struct cmd_list_element **,
117 struct cmd_list_element **);
119 extern struct cmd_list_element *add_abbrev_prefix_cmd (char *,
124 struct cmd_list_element
126 struct cmd_list_element
129 /* Set the commands corresponding callback. */
131 typedef void cmd_cfunc_ftype (char *args, int from_tty);
132 extern void set_cmd_cfunc (struct cmd_list_element *cmd,
133 cmd_cfunc_ftype *cfunc);
135 typedef void cmd_sfunc_ftype (char *args, int from_tty,
136 struct cmd_list_element *c);
137 extern void set_cmd_sfunc (struct cmd_list_element *cmd,
138 cmd_sfunc_ftype *sfunc);
140 extern void set_cmd_completer (struct cmd_list_element *cmd,
141 char **(*completer) (char *text, char *word));
143 /* HACK: cagney/2002-02-23: Code, mostly in tracepoints.c, grubs
144 around in cmd objects to test the value of the commands sfunc(). */
145 extern int cmd_cfunc_eq (struct cmd_list_element *cmd,
146 void (*cfunc) (char *args, int from_tty));
148 /* Each command object has a local context attached to it. . */
149 extern void set_cmd_context (struct cmd_list_element *cmd, void *context);
150 extern void *get_cmd_context (struct cmd_list_element *cmd);
153 /* Execute CMD's pre/post hook. Throw an error if the command fails.
154 If already executing this pre/post hook, or there is no pre/post
155 hook, the call is silently ignored. */
156 extern void execute_cmd_pre_hook (struct cmd_list_element *cmd);
157 extern void execute_cmd_post_hook (struct cmd_list_element *cmd);
159 /* Return the type of the command. */
160 extern enum cmd_types cmd_type (struct cmd_list_element *cmd);
163 extern struct cmd_list_element *lookup_cmd (char **,
164 struct cmd_list_element *, char *,
167 extern struct cmd_list_element *lookup_cmd_1 (char **,
168 struct cmd_list_element *,
169 struct cmd_list_element **,
172 extern struct cmd_list_element *
173 deprecate_cmd (struct cmd_list_element *, char * );
176 deprecated_cmd_warning (char **);
179 lookup_cmd_composition (char *text,
180 struct cmd_list_element **alias,
181 struct cmd_list_element **prefix_cmd,
182 struct cmd_list_element **cmd);
184 extern struct cmd_list_element *add_com (char *, enum command_class,
185 void (*fun) (char *, int), char *);
187 extern struct cmd_list_element *add_com_alias (char *, char *,
188 enum command_class, int);
190 extern struct cmd_list_element *add_info (char *, void (*fun) (char *, int),
193 extern struct cmd_list_element *add_info_alias (char *, char *, int);
195 extern char **complete_on_cmdlist (struct cmd_list_element *, char *, char *);
197 extern char **complete_on_enum (const char *enumlist[], char *, char *);
199 extern void help_cmd (char *, struct ui_file *);
201 extern void help_list (struct cmd_list_element *, char *,
202 enum command_class, struct ui_file *);
204 extern void help_cmd_list (struct cmd_list_element *, enum command_class,
205 char *, int, struct ui_file *);
207 /* NOTE: cagney/2005-02-21: Since every set command should be paired
208 with a corresponding show command (i.e., add_setshow_*) this call
209 should not be needed. Unfortunatly some are not (e.g.,
210 "maintenance <variable> <value>") and those need to be fixed. */
211 extern struct cmd_list_element *deprecated_add_set_cmd (char *name, enum
213 var_types var_type, void *var,
215 struct cmd_list_element **list);
217 /* Method for show a set/show variable's VALUE on FILE. If this
218 method isn't supplied deprecated_show_value_hack() is called (which
220 typedef void (show_value_ftype) (struct ui_file *file,
222 struct cmd_list_element *cmd,
224 /* NOTE: i18n: This function is not i18n friendly. Callers should
225 instead print the value out directly. */
226 extern show_value_ftype deprecated_show_value_hack;
228 extern void add_setshow_enum_cmd (char *name,
229 enum command_class class,
230 const char *enumlist[],
233 const char *show_doc,
234 const char *help_doc,
235 cmd_sfunc_ftype *set_func,
236 show_value_ftype *show_func,
237 struct cmd_list_element **set_list,
238 struct cmd_list_element **show_list);
240 extern void add_setshow_auto_boolean_cmd (char *name,
241 enum command_class class,
242 enum auto_boolean *var,
244 const char *show_doc,
245 const char *help_doc,
246 cmd_sfunc_ftype *set_func,
247 show_value_ftype *show_func,
248 struct cmd_list_element **set_list,
249 struct cmd_list_element **show_list);
251 extern void add_setshow_boolean_cmd (char *name,
252 enum command_class class,
254 const char *set_doc, const char *show_doc,
255 const char *help_doc,
256 cmd_sfunc_ftype *set_func,
257 show_value_ftype *show_func,
258 struct cmd_list_element **set_list,
259 struct cmd_list_element **show_list);
261 extern void add_setshow_filename_cmd (char *name,
262 enum command_class class,
265 const char *show_doc,
266 const char *help_doc,
267 cmd_sfunc_ftype *set_func,
268 show_value_ftype *show_func,
269 struct cmd_list_element **set_list,
270 struct cmd_list_element **show_list);
272 extern void add_setshow_string_cmd (char *name,
273 enum command_class class,
276 const char *show_doc,
277 const char *help_doc,
278 cmd_sfunc_ftype *set_func,
279 show_value_ftype *show_func,
280 struct cmd_list_element **set_list,
281 struct cmd_list_element **show_list);
283 extern void add_setshow_string_noescape_cmd (char *name,
284 enum command_class class,
287 const char *show_doc,
288 const char *help_doc,
289 cmd_sfunc_ftype *set_func,
290 show_value_ftype *show_func,
291 struct cmd_list_element **set_list,
292 struct cmd_list_element **show_list);
294 extern void add_setshow_optional_filename_cmd (char *name,
295 enum command_class class,
298 const char *show_doc,
299 const char *help_doc,
300 cmd_sfunc_ftype *set_func,
301 show_value_ftype *show_func,
302 struct cmd_list_element **set_list,
303 struct cmd_list_element **show_list);
305 extern void add_setshow_integer_cmd (char *name,
306 enum command_class class,
309 const char *show_doc,
310 const char *help_doc,
311 cmd_sfunc_ftype *set_func,
312 show_value_ftype *show_func,
313 struct cmd_list_element **set_list,
314 struct cmd_list_element **show_list);
316 extern void add_setshow_uinteger_cmd (char *name,
317 enum command_class class,
320 const char *show_doc,
321 const char *help_doc,
322 cmd_sfunc_ftype *set_func,
323 show_value_ftype *show_func,
324 struct cmd_list_element **set_list,
325 struct cmd_list_element **show_list);
327 extern void add_setshow_zinteger_cmd (char *name,
328 enum command_class class,
331 const char *show_doc,
332 const char *help_doc,
333 cmd_sfunc_ftype *set_func,
334 show_value_ftype *show_func,
335 struct cmd_list_element **set_list,
336 struct cmd_list_element **show_list);
338 extern void add_setshow_zuinteger_cmd (char *name,
339 enum command_class class,
342 const char *show_doc,
343 const char *help_doc,
344 cmd_sfunc_ftype *set_func,
345 show_value_ftype *show_func,
346 struct cmd_list_element **set_list,
347 struct cmd_list_element **show_list);
349 /* Do a "show" command for each thing on a command list. */
351 extern void cmd_show_list (struct cmd_list_element *, int, char *);
353 extern NORETURN void error_no_arg (char *) ATTR_NORETURN;
355 extern void dont_repeat (void);
357 /* Used to mark commands that don't do anything. If we just leave the
358 function field NULL, the command is interpreted as a help topic, or
359 as a class of commands. */
361 extern void not_just_help_class_command (char *, int);
363 /* check function pointer */
364 extern int cmd_func_p (struct cmd_list_element *cmd);
366 /* call the command function */
367 extern void cmd_func (struct cmd_list_element *cmd, char *args, int from_tty);
369 #endif /* !defined (COMMAND_H) */