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 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 delete_cmd (char *, struct cmd_list_element **);
198 extern void help_cmd (char *, struct ui_file *);
200 extern void help_list (struct cmd_list_element *, char *,
201 enum command_class, struct ui_file *);
203 extern void help_cmd_list (struct cmd_list_element *, enum command_class,
204 char *, int, struct ui_file *);
206 /* NOTE: cagney/2005-02-21: Since every set command should be paired
207 with a corresponding show command (i.e., add_setshow_*) this call
208 should not be needed. Unfortunatly some are not (e.g.,
209 "maintenance <variable> <value>") and those need to be fixed. */
210 extern struct cmd_list_element *deprecated_add_set_cmd (char *name, enum
212 var_types var_type, void *var,
214 struct cmd_list_element **list);
216 /* Method for show a set/show variable's VALUE on FILE. If this
217 method isn't supplied deprecated_show_value_hack() is called (which
219 typedef void (show_value_ftype) (struct ui_file *file,
221 struct cmd_list_element *cmd,
223 /* NOTE: i18n: This function is not i18n friendly. Callers should
224 instead print the value out directly. */
225 extern show_value_ftype deprecated_show_value_hack;
227 extern void add_setshow_enum_cmd (char *name,
228 enum command_class class,
229 const char *enumlist[],
232 const char *show_doc,
233 const char *help_doc,
234 cmd_sfunc_ftype *set_func,
235 show_value_ftype *show_func,
236 struct cmd_list_element **set_list,
237 struct cmd_list_element **show_list);
239 extern void add_setshow_auto_boolean_cmd (char *name,
240 enum command_class class,
241 enum auto_boolean *var,
243 const char *show_doc,
244 const char *help_doc,
245 cmd_sfunc_ftype *set_func,
246 show_value_ftype *show_func,
247 struct cmd_list_element **set_list,
248 struct cmd_list_element **show_list);
250 extern void add_setshow_boolean_cmd (char *name,
251 enum command_class class,
253 const char *set_doc, const char *show_doc,
254 const char *help_doc,
255 cmd_sfunc_ftype *set_func,
256 show_value_ftype *show_func,
257 struct cmd_list_element **set_list,
258 struct cmd_list_element **show_list);
260 extern void add_setshow_filename_cmd (char *name,
261 enum command_class class,
264 const char *show_doc,
265 const char *help_doc,
266 cmd_sfunc_ftype *set_func,
267 show_value_ftype *show_func,
268 struct cmd_list_element **set_list,
269 struct cmd_list_element **show_list);
271 extern void add_setshow_string_cmd (char *name,
272 enum command_class class,
275 const char *show_doc,
276 const char *help_doc,
277 cmd_sfunc_ftype *set_func,
278 show_value_ftype *show_func,
279 struct cmd_list_element **set_list,
280 struct cmd_list_element **show_list);
282 extern void add_setshow_string_noescape_cmd (char *name,
283 enum command_class class,
286 const char *show_doc,
287 const char *help_doc,
288 cmd_sfunc_ftype *set_func,
289 show_value_ftype *show_func,
290 struct cmd_list_element **set_list,
291 struct cmd_list_element **show_list);
293 extern void add_setshow_optional_filename_cmd (char *name,
294 enum command_class class,
297 const char *show_doc,
298 const char *help_doc,
299 cmd_sfunc_ftype *set_func,
300 show_value_ftype *show_func,
301 struct cmd_list_element **set_list,
302 struct cmd_list_element **show_list);
304 extern void add_setshow_integer_cmd (char *name,
305 enum command_class class,
308 const char *show_doc,
309 const char *help_doc,
310 cmd_sfunc_ftype *set_func,
311 show_value_ftype *show_func,
312 struct cmd_list_element **set_list,
313 struct cmd_list_element **show_list);
315 extern void add_setshow_uinteger_cmd (char *name,
316 enum command_class class,
319 const char *show_doc,
320 const char *help_doc,
321 cmd_sfunc_ftype *set_func,
322 show_value_ftype *show_func,
323 struct cmd_list_element **set_list,
324 struct cmd_list_element **show_list);
326 extern void add_setshow_zinteger_cmd (char *name,
327 enum command_class class,
330 const char *show_doc,
331 const char *help_doc,
332 cmd_sfunc_ftype *set_func,
333 show_value_ftype *show_func,
334 struct cmd_list_element **set_list,
335 struct cmd_list_element **show_list);
337 /* Do a "show" command for each thing on a command list. */
339 extern void cmd_show_list (struct cmd_list_element *, int, char *);
341 extern NORETURN void error_no_arg (char *) ATTR_NORETURN;
343 extern void dont_repeat (void);
345 /* Used to mark commands that don't do anything. If we just leave the
346 function field NULL, the command is interpreted as a help topic, or
347 as a class of commands. */
349 extern void not_just_help_class_command (char *, int);
351 /* check function pointer */
352 extern int cmd_func_p (struct cmd_list_element *cmd);
354 /* call the command function */
355 extern void cmd_func (struct cmd_list_element *cmd, char *args, int from_tty);
357 #endif /* !defined (COMMAND_H) */