| 1 | /* Header file for command-reading library command.c. |
| 2 | |
| 3 | Copyright 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1999, |
| 4 | 2000, 2002 Free Software Foundation, Inc. |
| 5 | |
| 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 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 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. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 19 | Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | #if !defined (COMMAND_H) |
| 22 | #define COMMAND_H 1 |
| 23 | |
| 24 | /* Command classes are top-level categories into which commands are broken |
| 25 | down for "help" purposes. |
| 26 | Notes on classes: class_alias is for alias commands which are not |
| 27 | abbreviations of the original command. class-pseudo is for |
| 28 | commands which are not really commands nor help topics ("stop"). */ |
| 29 | |
| 30 | enum command_class |
| 31 | { |
| 32 | /* Special args to help_list */ |
| 33 | class_deprecated, all_classes = -2, all_commands = -1, |
| 34 | /* Classes of commands */ |
| 35 | no_class = -1, class_run = 0, class_vars, class_stack, |
| 36 | class_files, class_support, class_info, class_breakpoint, class_trace, |
| 37 | class_alias, class_obscure, class_user, class_maintenance, |
| 38 | class_pseudo, class_tui, class_xdb |
| 39 | }; |
| 40 | |
| 41 | /* FIXME: cagney/2002-03-17: Once cmd_type() has been removed, ``enum |
| 42 | cmd_types'' can be moved from "command.h" to "cli-decode.h". */ |
| 43 | /* Not a set/show command. Note that some commands which begin with |
| 44 | "set" or "show" might be in this category, if their syntax does |
| 45 | not fall into one of the following categories. */ |
| 46 | typedef enum cmd_types |
| 47 | { |
| 48 | not_set_cmd, |
| 49 | set_cmd, |
| 50 | show_cmd |
| 51 | } |
| 52 | cmd_types; |
| 53 | |
| 54 | /* Reasonable values for an AUTO_BOOLEAN variable. */ |
| 55 | enum cmd_auto_boolean |
| 56 | { |
| 57 | CMD_AUTO_BOOLEAN_TRUE, |
| 58 | CMD_AUTO_BOOLEAN_FALSE, |
| 59 | CMD_AUTO_BOOLEAN_AUTO |
| 60 | }; |
| 61 | |
| 62 | /* Types of "set" or "show" command. */ |
| 63 | typedef enum var_types |
| 64 | { |
| 65 | /* "on" or "off". *VAR is an integer which is nonzero for on, |
| 66 | zero for off. */ |
| 67 | var_boolean, |
| 68 | |
| 69 | /* "on" / "true" / "enable" or "off" / "false" / "disable" or |
| 70 | "auto. *VAR is an ``enum cmd_auto_boolean''. NOTE: In general |
| 71 | a custom show command will need to be implemented - one that |
| 72 | for "auto" prints both the "auto" and the current auto-selected |
| 73 | value. */ |
| 74 | var_auto_boolean, |
| 75 | |
| 76 | /* Unsigned Integer. *VAR is an unsigned int. The user can type 0 |
| 77 | to mean "unlimited", which is stored in *VAR as UINT_MAX. */ |
| 78 | var_uinteger, |
| 79 | |
| 80 | /* Like var_uinteger but signed. *VAR is an int. The user can type 0 |
| 81 | to mean "unlimited", which is stored in *VAR as INT_MAX. */ |
| 82 | var_integer, |
| 83 | |
| 84 | /* String which the user enters with escapes (e.g. the user types \n and |
| 85 | it is a real newline in the stored string). |
| 86 | *VAR is a malloc'd string, or NULL if the string is empty. */ |
| 87 | var_string, |
| 88 | /* String which stores what the user types verbatim. |
| 89 | *VAR is a malloc'd string, or NULL if the string is empty. */ |
| 90 | var_string_noescape, |
| 91 | /* String which stores a filename. |
| 92 | *VAR is a malloc'd string, or NULL if the string is empty. */ |
| 93 | var_filename, |
| 94 | /* ZeroableInteger. *VAR is an int. Like Unsigned Integer except |
| 95 | that zero really means zero. */ |
| 96 | var_zinteger, |
| 97 | /* Enumerated type. Can only have one of the specified values. *VAR is a |
| 98 | char pointer to the name of the element that we find. */ |
| 99 | var_enum |
| 100 | } |
| 101 | var_types; |
| 102 | |
| 103 | /* This structure records one command'd definition. */ |
| 104 | struct cmd_list_element; |
| 105 | |
| 106 | /* Forward-declarations of the entry-points of cli/cli-decode.c. */ |
| 107 | |
| 108 | extern struct cmd_list_element *add_cmd (char *, enum command_class, |
| 109 | void (*fun) (char *, int), char *, |
| 110 | struct cmd_list_element **); |
| 111 | |
| 112 | extern struct cmd_list_element *add_alias_cmd (char *, char *, |
| 113 | enum command_class, int, |
| 114 | struct cmd_list_element **); |
| 115 | |
| 116 | extern struct cmd_list_element *add_prefix_cmd (char *, enum command_class, |
| 117 | void (*fun) (char *, int), |
| 118 | char *, |
| 119 | struct cmd_list_element **, |
| 120 | char *, int, |
| 121 | struct cmd_list_element **); |
| 122 | |
| 123 | extern struct cmd_list_element *add_abbrev_prefix_cmd (char *, |
| 124 | enum command_class, |
| 125 | void (*fun) (char *, |
| 126 | int), |
| 127 | char *, |
| 128 | struct cmd_list_element |
| 129 | **, char *, int, |
| 130 | struct cmd_list_element |
| 131 | **); |
| 132 | |
| 133 | /* Set the commands corresponding callback. */ |
| 134 | |
| 135 | extern void set_cmd_cfunc (struct cmd_list_element *cmd, |
| 136 | void (*cfunc) (char *args, int from_tty)); |
| 137 | |
| 138 | extern void set_cmd_sfunc (struct cmd_list_element *cmd, |
| 139 | void (*sfunc) (char *args, int from_tty, |
| 140 | struct cmd_list_element * c)); |
| 141 | |
| 142 | extern void set_cmd_completer (struct cmd_list_element *cmd, |
| 143 | char **(*completer) (char *text, char *word)); |
| 144 | |
| 145 | /* HACK: cagney/2002-02-23: Code, mostly in tracepoints.c, grubs |
| 146 | around in cmd objects to test the value of the commands sfunc(). */ |
| 147 | extern int cmd_cfunc_eq (struct cmd_list_element *cmd, |
| 148 | void (*cfunc) (char *args, int from_tty)); |
| 149 | |
| 150 | /* Each command object has a local context attached to it. . */ |
| 151 | extern void set_cmd_context (struct cmd_list_element *cmd, void *context); |
| 152 | extern void *get_cmd_context (struct cmd_list_element *cmd); |
| 153 | |
| 154 | |
| 155 | /* Execute CMD's pre/post hook. Throw an error if the command fails. |
| 156 | If already executing this pre/post hook, or there is no pre/post |
| 157 | hook, the call is silently ignored. */ |
| 158 | extern void execute_cmd_pre_hook (struct cmd_list_element *cmd); |
| 159 | extern void execute_cmd_post_hook (struct cmd_list_element *cmd); |
| 160 | |
| 161 | /* Return the type of the command. */ |
| 162 | /* NOTE: cagney/2002-03-17: The add_show_from_set() function clones |
| 163 | the set command passed as a parameter. The clone operation will |
| 164 | include (BUG?) any ``set'' command callback, if present. Commands |
| 165 | like ``info set'' call all the ``show'' command callbacks. |
| 166 | Unfortunatly, for ``show'' commands cloned from ``set'', this |
| 167 | includes callbacks belonging to ``set'' commands. Making this |
| 168 | worse, this only occures if add_show_from_set() is called after |
| 169 | add_cmd_sfunc() (BUG?). */ |
| 170 | extern enum cmd_types cmd_type (struct cmd_list_element *cmd); |
| 171 | |
| 172 | |
| 173 | extern struct cmd_list_element *lookup_cmd (char **, |
| 174 | struct cmd_list_element *, char *, |
| 175 | int, int); |
| 176 | |
| 177 | extern struct cmd_list_element *lookup_cmd_1 (char **, |
| 178 | struct cmd_list_element *, |
| 179 | struct cmd_list_element **, |
| 180 | int); |
| 181 | |
| 182 | extern struct cmd_list_element * |
| 183 | deprecate_cmd (struct cmd_list_element *, char * ); |
| 184 | |
| 185 | extern void |
| 186 | deprecated_cmd_warning (char **); |
| 187 | |
| 188 | extern int |
| 189 | lookup_cmd_composition (char *text, |
| 190 | struct cmd_list_element **alias, |
| 191 | struct cmd_list_element **prefix_cmd, |
| 192 | struct cmd_list_element **cmd); |
| 193 | |
| 194 | extern struct cmd_list_element *add_com (char *, enum command_class, |
| 195 | void (*fun) (char *, int), char *); |
| 196 | |
| 197 | extern struct cmd_list_element *add_com_alias (char *, char *, |
| 198 | enum command_class, int); |
| 199 | |
| 200 | extern struct cmd_list_element *add_info (char *, void (*fun) (char *, int), |
| 201 | char *); |
| 202 | |
| 203 | extern struct cmd_list_element *add_info_alias (char *, char *, int); |
| 204 | |
| 205 | extern char **complete_on_cmdlist (struct cmd_list_element *, char *, char *); |
| 206 | |
| 207 | extern char **complete_on_enum (const char *enumlist[], char *, char *); |
| 208 | |
| 209 | extern void delete_cmd (char *, struct cmd_list_element **); |
| 210 | |
| 211 | extern void help_cmd (char *, struct ui_file *); |
| 212 | |
| 213 | extern void help_list (struct cmd_list_element *, char *, |
| 214 | enum command_class, struct ui_file *); |
| 215 | |
| 216 | extern void help_cmd_list (struct cmd_list_element *, enum command_class, |
| 217 | char *, int, struct ui_file *); |
| 218 | |
| 219 | extern struct cmd_list_element *add_set_cmd (char *name, enum |
| 220 | command_class class, |
| 221 | var_types var_type, void *var, |
| 222 | char *doc, |
| 223 | struct cmd_list_element **list); |
| 224 | |
| 225 | extern struct cmd_list_element *add_set_enum_cmd (char *name, |
| 226 | enum command_class class, |
| 227 | const char *enumlist[], |
| 228 | const char **var, |
| 229 | char *doc, |
| 230 | struct cmd_list_element **list); |
| 231 | |
| 232 | extern struct cmd_list_element *add_set_auto_boolean_cmd (char *name, |
| 233 | enum command_class class, |
| 234 | enum cmd_auto_boolean *var, |
| 235 | char *doc, |
| 236 | struct cmd_list_element **list); |
| 237 | |
| 238 | extern struct cmd_list_element *add_set_boolean_cmd (char *name, |
| 239 | enum command_class class, |
| 240 | int *var, |
| 241 | char *doc, |
| 242 | struct cmd_list_element **list); |
| 243 | |
| 244 | extern struct cmd_list_element *add_show_from_set (struct cmd_list_element *, |
| 245 | struct cmd_list_element |
| 246 | **); |
| 247 | |
| 248 | /* Do a "show" command for each thing on a command list. */ |
| 249 | |
| 250 | extern void cmd_show_list (struct cmd_list_element *, int, char *); |
| 251 | |
| 252 | extern NORETURN void error_no_arg (char *) ATTR_NORETURN; |
| 253 | |
| 254 | extern void dont_repeat (void); |
| 255 | |
| 256 | /* Used to mark commands that don't do anything. If we just leave the |
| 257 | function field NULL, the command is interpreted as a help topic, or |
| 258 | as a class of commands. */ |
| 259 | |
| 260 | extern void not_just_help_class_command (char *, int); |
| 261 | |
| 262 | #endif /* !defined (COMMAND_H) */ |